Pileus Git - ~andy/gtk/blob - gtk/gtkcombobox.c

   1 /* gtkcombobox.c
   2  * Copyright (C) 2002, 2003  Kristian Rietveld <kris@gtk.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21 #include "gtkcombobox.h"
  22 #include "gtkcellareabox.h"
  23 #include "gtktreemenu.h"
  24 #include "gtkarrow.h"
  25 #include "gtkbindings.h"
  26 #include "gtkcelllayout.h"
  27 #include "gtkcellrenderertext.h"
  28 #include "gtkcellview.h"
  29 #include "gtkeventbox.h"
  30 #include "gtkframe.h"
  31 #include "gtkbox.h"
  32 #include "gtkliststore.h"
  33 #include "gtkmain.h"
  34 #include "gtkmenuprivate.h"
  35 #include "gtkmenushellprivate.h"
  36 #include "gtkscrolledwindow.h"
  37 #include "gtkseparatormenuitem.h"
  38 #include "deprecated/gtktearoffmenuitem.h"
  39 #include "gtktogglebutton.h"
  40 #include "gtktreeselection.h"
  41 #include "gtkseparator.h"
  42 #include "gtkwindow.h"
  43 #include "gtktypebuiltins.h"
  44 #include "gtkprivate.h"
  45
  46 #include <gobject/gvaluecollector.h>
  47
  48 #include <string.h>
  49 #include <stdarg.h>
  50
  51 #include "gtkmarshalers.h"
  52 #include "gtkintl.h"
  53
  54 #include "gtkentryprivate.h"
  55 #include "gtktreeprivate.h"
  56 #include "a11y/gtkcomboboxaccessible.h"
  57
  58
  59 /**
  60  * SECTION:gtkcombobox
  61  * @Short_description: A widget used to choose from a list of items
  62  * @Title: GtkComboBox
  63  * @See_also: #GtkComboBoxText, #GtkTreeModel, #GtkCellRenderer
  64  *
  65  * A GtkComboBox is a widget that allows the user to choose from a list of
  66  * valid choices. The GtkComboBox displays the selected choice. When
  67  * activated, the GtkComboBox displays a popup which allows the user to
  68  * make a new choice. The style in which the selected value is displayed,
  69  * and the style of the popup is determined by the current theme. It may
  70  * be similar to a Windows-style combo box.
  71  *
  72  * The GtkComboBox uses the model-view pattern; the list of valid choices
  73  * is specified in the form of a tree model, and the display of the choices
  74  * can be adapted to the data in the model by using cell renderers, as you
  75  * would in a tree view. This is possible since GtkComboBox implements the
  76  * #GtkCellLayout interface. The tree model holding the valid choices is
  77  * not restricted to a flat list, it can be a real tree, and the popup will
  78  * reflect the tree structure.
  79  *
  80  * To allow the user to enter values not in the model, the 'has-entry'
  81  * property allows the GtkComboBox to contain a #GtkEntry. This entry
  82  * can be accessed by calling gtk_bin_get_child() on the combo box.
  83  *
  84  * For a simple list of textual choices, the model-view API of GtkComboBox
  85  * can be a bit overwhelming. In this case, #GtkComboBoxText offers a
  86  * simple alternative. Both GtkComboBox and #GtkComboBoxText can contain
  87  * an entry.
  88  */
  89
  90
  91 /* WELCOME, to THE house of evil code */
  92 struct _GtkComboBoxPrivate
  93 {
  94   GtkTreeModel *model;
  95
  96   GtkCellArea *area;
  97
  98   gint col_column;
  99   gint row_column;
 100
 101   gint wrap_width;
 102   GtkShadowType shadow_type;
 103
 104   gint active; /* Only temporary */
 105   GtkTreeRowReference *active_row;
 106
 107   GtkWidget *tree_view;
 108
 109   GtkWidget *cell_view;
 110   GtkWidget *cell_view_frame;
 111
 112   GtkWidget *button;
 113   GtkWidget *box;
 114   GtkWidget *arrow;
 115   GtkWidget *separator;
 116
 117   GtkWidget *popup_widget;
 118   GtkWidget *popup_window;
 119   GtkWidget *scrolled_window;
 120
 121   gulong inserted_id;
 122   gulong deleted_id;
 123   gulong reordered_id;
 124   gulong changed_id;
 125   guint popup_idle_id;
 126   guint activate_button;
 127   guint32 activate_time;
 128   guint scroll_timer;
 129   guint resize_idle_id;
 130
 131   /* For "has-entry" specific behavior we track
 132    * an automated cell renderer and text column
 133    */
 134   gint  text_column;
 135   GtkCellRenderer *text_renderer;
 136
 137   gint id_column;
 138
 139   guint popup_in_progress : 1;
 140   guint popup_shown : 1;
 141   guint add_tearoffs : 1;
 142   guint has_frame : 1;
 143   guint is_cell_renderer : 1;
 144   guint editing_canceled : 1;
 145   guint auto_scroll : 1;
 146   guint focus_on_click : 1;
 147   guint button_sensitivity : 2;
 148   guint has_entry : 1;
 149   guint popup_fixed_width : 1;
 150
 151   GtkTreeViewRowSeparatorFunc row_separator_func;
 152   gpointer                    row_separator_data;
 153   GDestroyNotify              row_separator_destroy;
 154
 155   GdkDevice *grab_pointer;
 156   GdkDevice *grab_keyboard;
 157
 158   gchar *tearoff_title;
 159 };
 160
 161 /* While debugging this evil code, I have learned that
 162  * there are actually 4 modes to this widget, which can
 163  * be characterized as follows
 164  *
 165  * 1) menu mode, no child added
 166  *
 167  * tree_view -> NULL
 168  * cell_view -> GtkCellView, regular child
 169  * cell_view_frame -> NULL
 170  * button -> GtkToggleButton set_parent to combo
 171  * arrow -> GtkArrow set_parent to button
 172  * separator -> GtkVSepator set_parent to button
 173  * popup_widget -> GtkMenu
 174  * popup_window -> NULL
 175  * scrolled_window -> NULL
 176  *
 177  * 2) menu mode, child added
 178  *
 179  * tree_view -> NULL
 180  * cell_view -> NULL
 181  * cell_view_frame -> NULL
 182  * button -> GtkToggleButton set_parent to combo
 183  * arrow -> GtkArrow, child of button
 184  * separator -> NULL
 185  * popup_widget -> GtkMenu
 186  * popup_window -> NULL
 187  * scrolled_window -> NULL
 188  *
 189  * 3) list mode, no child added
 190  *
 191  * tree_view -> GtkTreeView, child of scrolled_window
 192  * cell_view -> GtkCellView, regular child
 193  * cell_view_frame -> GtkFrame, set parent to combo
 194  * button -> GtkToggleButton, set_parent to combo
 195  * arrow -> GtkArrow, child of button
 196  * separator -> NULL
 197  * popup_widget -> tree_view
 198  * popup_window -> GtkWindow
 199  * scrolled_window -> GtkScrolledWindow, child of popup_window
 200  *
 201  * 4) list mode, child added
 202  *
 203  * tree_view -> GtkTreeView, child of scrolled_window
 204  * cell_view -> NULL
 205  * cell_view_frame -> NULL
 206  * button -> GtkToggleButton, set_parent to combo
 207  * arrow -> GtkArrow, child of button
 208  * separator -> NULL
 209  * popup_widget -> tree_view
 210  * popup_window -> GtkWindow
 211  * scrolled_window -> GtkScrolledWindow, child of popup_window
 212  *
 213  */
 214
 215 enum {
 216   CHANGED,
 217   MOVE_ACTIVE,
 218   POPUP,
 219   POPDOWN,
 220   FORMAT_ENTRY_TEXT,
 221   LAST_SIGNAL
 222 };
 223
 224 enum {
 225   PROP_0,
 226   PROP_MODEL,
 227   PROP_WRAP_WIDTH,
 228   PROP_ROW_SPAN_COLUMN,
 229   PROP_COLUMN_SPAN_COLUMN,
 230   PROP_ACTIVE,
 231   PROP_ADD_TEAROFFS,
 232   PROP_TEAROFF_TITLE,
 233   PROP_HAS_FRAME,
 234   PROP_FOCUS_ON_CLICK,
 235   PROP_POPUP_SHOWN,
 236   PROP_BUTTON_SENSITIVITY,
 237   PROP_EDITING_CANCELED,
 238   PROP_HAS_ENTRY,
 239   PROP_ENTRY_TEXT_COLUMN,
 240   PROP_POPUP_FIXED_WIDTH,
 241   PROP_ID_COLUMN,
 242   PROP_ACTIVE_ID,
 243   PROP_CELL_AREA
 244 };
 245
 246 static guint combo_box_signals[LAST_SIGNAL] = {0,};
 247
 248 #define SCROLL_TIME  100
 249
 250 /* common */
 251
 252 static void     gtk_combo_box_cell_layout_init     (GtkCellLayoutIface *iface);
 253 static void     gtk_combo_box_cell_editable_init   (GtkCellEditableIface *iface);
 254 static GObject *gtk_combo_box_constructor          (GType                  type,
 255                                                     guint                  n_construct_properties,
 256                                                     GObjectConstructParam *construct_properties);
 257 static void     gtk_combo_box_dispose              (GObject          *object);
 258 static void     gtk_combo_box_finalize             (GObject          *object);
 259 static void     gtk_combo_box_destroy              (GtkWidget        *widget);
 260
 261 static void     gtk_combo_box_set_property         (GObject         *object,
 262                                                     guint            prop_id,
 263                                                     const GValue    *value,
 264                                                     GParamSpec      *spec);
 265 static void     gtk_combo_box_get_property         (GObject         *object,
 266                                                     guint            prop_id,
 267                                                     GValue          *value,
 268                                                     GParamSpec      *spec);
 269
 270 static void     gtk_combo_box_state_flags_changed  (GtkWidget       *widget,
 271                                                     GtkStateFlags    previous);
 272 static void     gtk_combo_box_grab_focus           (GtkWidget       *widget);
 273 static void     gtk_combo_box_style_updated        (GtkWidget       *widget);
 274 static void     gtk_combo_box_button_toggled       (GtkWidget       *widget,
 275                                                     gpointer         data);
 276 static void     gtk_combo_box_button_state_flags_changed (GtkWidget     *widget,
 277                                                           GtkStateFlags  previous,
 278                                                           gpointer       data);
 279 static void     gtk_combo_box_add                  (GtkContainer    *container,
 280                                                     GtkWidget       *widget);
 281 static void     gtk_combo_box_remove               (GtkContainer    *container,
 282                                                     GtkWidget       *widget);
 283
 284 static void     gtk_combo_box_menu_show            (GtkWidget        *menu,
 285                                                     gpointer          user_data);
 286 static void     gtk_combo_box_menu_hide            (GtkWidget        *menu,
 287                                                     gpointer          user_data);
 288
 289 static void     gtk_combo_box_set_popup_widget     (GtkComboBox      *combo_box,
 290                                                     GtkWidget        *popup);
 291 static void     gtk_combo_box_menu_position_below  (GtkMenu          *menu,
 292                                                     gint             *x,
 293                                                     gint             *y,
 294                                                     gint             *push_in,
 295                                                     gpointer          user_data);
 296 static void     gtk_combo_box_menu_position_over   (GtkMenu          *menu,
 297                                                     gint             *x,
 298                                                     gint             *y,
 299                                                     gint             *push_in,
 300                                                     gpointer          user_data);
 301 static void     gtk_combo_box_menu_position        (GtkMenu          *menu,
 302                                                     gint             *x,
 303                                                     gint             *y,
 304                                                     gint             *push_in,
 305                                                     gpointer          user_data);
 306
 307 static void     gtk_combo_box_unset_model          (GtkComboBox      *combo_box);
 308
 309 static void     gtk_combo_box_size_allocate        (GtkWidget        *widget,
 310                                                     GtkAllocation    *allocation);
 311 static void     gtk_combo_box_forall               (GtkContainer     *container,
 312                                                     gboolean          include_internals,
 313                                                     GtkCallback       callback,
 314                                                     gpointer          callback_data);
 315 static gboolean gtk_combo_box_draw                 (GtkWidget        *widget,
 316                                                     cairo_t          *cr);
 317 static gboolean gtk_combo_box_scroll_event         (GtkWidget        *widget,
 318                                                     GdkEventScroll   *event);
 319 static void     gtk_combo_box_set_active_internal  (GtkComboBox      *combo_box,
 320                                                     GtkTreePath      *path);
 321
 322 static void     gtk_combo_box_check_appearance     (GtkComboBox      *combo_box);
 323 static void     gtk_combo_box_real_move_active     (GtkComboBox      *combo_box,
 324                                                     GtkScrollType     scroll);
 325 static void     gtk_combo_box_real_popup           (GtkComboBox      *combo_box);
 326 static gboolean gtk_combo_box_real_popdown         (GtkComboBox      *combo_box);
 327
 328 /* listening to the model */
 329 static void     gtk_combo_box_model_row_inserted   (GtkTreeModel     *model,
 330                                                     GtkTreePath      *path,
 331                                                     GtkTreeIter      *iter,
 332                                                     gpointer          user_data);
 333 static void     gtk_combo_box_model_row_deleted    (GtkTreeModel     *model,
 334                                                     GtkTreePath      *path,
 335                                                     gpointer          user_data);
 336 static void     gtk_combo_box_model_rows_reordered (GtkTreeModel     *model,
 337                                                     GtkTreePath      *path,
 338                                                     GtkTreeIter      *iter,
 339                                                     gint             *new_order,
 340                                                     gpointer          user_data);
 341 static void     gtk_combo_box_model_row_changed    (GtkTreeModel     *model,
 342                                                     GtkTreePath      *path,
 343                                                     GtkTreeIter      *iter,
 344                                                     gpointer          data);
 345 static void     gtk_combo_box_model_row_expanded   (GtkTreeModel     *model,
 346                                                     GtkTreePath      *path,
 347                                                     GtkTreeIter      *iter,
 348                                                     gpointer          data);
 349
 350 /* list */
 351 static void     gtk_combo_box_list_position        (GtkComboBox      *combo_box,
 352                                                     gint             *x,
 353                                                     gint             *y,
 354                                                     gint             *width,
 355                                                     gint             *height);
 356 static void     gtk_combo_box_list_setup           (GtkComboBox      *combo_box);
 357 static void     gtk_combo_box_list_destroy         (GtkComboBox      *combo_box);
 358
 359 static gboolean gtk_combo_box_list_button_released (GtkWidget        *widget,
 360                                                     GdkEventButton   *event,
 361                                                     gpointer          data);
 362 static gboolean gtk_combo_box_list_key_press       (GtkWidget        *widget,
 363                                                     GdkEventKey      *event,
 364                                                     gpointer          data);
 365 static gboolean gtk_combo_box_list_enter_notify    (GtkWidget        *widget,
 366                                                     GdkEventCrossing *event,
 367                                                     gpointer          data);
 368 static void     gtk_combo_box_list_auto_scroll     (GtkComboBox   *combo,
 369                                                     gint           x,
 370                                                     gint           y);
 371 static gboolean gtk_combo_box_list_scroll_timeout  (GtkComboBox   *combo);
 372 static gboolean gtk_combo_box_list_button_pressed  (GtkWidget        *widget,
 373                                                     GdkEventButton   *event,
 374                                                     gpointer          data);
 375
 376 static gboolean gtk_combo_box_list_select_func     (GtkTreeSelection *selection,
 377                                                     GtkTreeModel     *model,
 378                                                     GtkTreePath      *path,
 379                                                     gboolean          path_currently_selected,
 380                                                     gpointer          data);
 381
 382 static void     gtk_combo_box_list_row_changed     (GtkTreeModel     *model,
 383                                                     GtkTreePath      *path,
 384                                                     GtkTreeIter      *iter,
 385                                                     gpointer          data);
 386 static void     gtk_combo_box_list_popup_resize    (GtkComboBox      *combo_box);
 387
 388 /* menu */
 389 static void     gtk_combo_box_menu_setup           (GtkComboBox      *combo_box,
 390                                                     gboolean          add_children);
 391 static void     gtk_combo_box_update_title         (GtkComboBox      *combo_box);
 392 static void     gtk_combo_box_menu_destroy         (GtkComboBox      *combo_box);
 393
 394
 395 static gboolean gtk_combo_box_menu_button_press    (GtkWidget        *widget,
 396                                                     GdkEventButton   *event,
 397                                                     gpointer          user_data);
 398 static void     gtk_combo_box_menu_activate        (GtkWidget        *menu,
 399                                                     const gchar      *path,
 400                                                     GtkComboBox      *combo_box);
 401 static void     gtk_combo_box_update_sensitivity   (GtkComboBox      *combo_box);
 402 static gboolean gtk_combo_box_menu_key_press       (GtkWidget        *widget,
 403                                                     GdkEventKey      *event,
 404                                                     gpointer          data);
 405 static void     gtk_combo_box_menu_popup           (GtkComboBox      *combo_box,
 406                                                     guint             button,
 407                                                     guint32           activate_time);
 408
 409 /* cell layout */
 410 static GtkCellArea *gtk_combo_box_cell_layout_get_area       (GtkCellLayout    *cell_layout);
 411
 412 static gboolean gtk_combo_box_mnemonic_activate              (GtkWidget    *widget,
 413                                                               gboolean      group_cycling);
 414
 415 static void     gtk_combo_box_child_show                     (GtkWidget       *widget,
 416                                                               GtkComboBox     *combo_box);
 417 static void     gtk_combo_box_child_hide                     (GtkWidget       *widget,
 418                                                               GtkComboBox     *combo_box);
 419
 420 /* GtkComboBox:has-entry callbacks */
 421 static void     gtk_combo_box_entry_contents_changed         (GtkEntry        *entry,
 422                                                               gpointer         user_data);
 423 static void     gtk_combo_box_entry_active_changed           (GtkComboBox     *combo_box,
 424                                                               gpointer         user_data);
 425 static gchar   *gtk_combo_box_format_entry_text              (GtkComboBox     *combo_box,
 426                                                               const gchar     *path);
 427
 428 /* GtkBuildable method implementation */
 429 static GtkBuildableIface *parent_buildable_iface;
 430
 431 static void     gtk_combo_box_buildable_init                 (GtkBuildableIface *iface);
 432 static gboolean gtk_combo_box_buildable_custom_tag_start     (GtkBuildable  *buildable,
 433                                                               GtkBuilder    *builder,
 434                                                               GObject       *child,
 435                                                               const gchar   *tagname,
 436                                                               GMarkupParser *parser,
 437                                                               gpointer      *data);
 438 static void     gtk_combo_box_buildable_custom_tag_end       (GtkBuildable  *buildable,
 439                                                               GtkBuilder    *builder,
 440                                                               GObject       *child,
 441                                                               const gchar   *tagname,
 442                                                               gpointer      *data);
 443 static GObject *gtk_combo_box_buildable_get_internal_child   (GtkBuildable *buildable,
 444                                                               GtkBuilder   *builder,
 445                                                               const gchar  *childname);
 446
 447
 448 /* GtkCellEditable method implementations */
 449 static void     gtk_combo_box_start_editing                  (GtkCellEditable *cell_editable,
 450                                                               GdkEvent        *event);
 451
 452 static void     gtk_combo_box_get_preferred_width            (GtkWidget    *widget,
 453                                                               gint         *minimum_size,
 454                                                               gint         *natural_size);
 455 static void     gtk_combo_box_get_preferred_height           (GtkWidget    *widget,
 456                                                               gint         *minimum_size,
 457                                                               gint         *natural_size);
 458 static void     gtk_combo_box_get_preferred_width_for_height (GtkWidget    *widget,
 459                                                               gint          avail_size,
 460                                                               gint         *minimum_size,
 461                                                               gint         *natural_size);
 462 static void     gtk_combo_box_get_preferred_height_for_width (GtkWidget    *widget,
 463                                                               gint          avail_size,
 464                                                               gint         *minimum_size,
 465                                                               gint         *natural_size);
 466 static GtkWidgetPath *gtk_combo_box_get_path_for_child       (GtkContainer *container,
 467                                                               GtkWidget    *child);
 468 static void     gtk_combo_box_direction_changed              (GtkWidget    *widget,
 469                                                               GtkTextDirection  previous_direction);
 470
 471 G_DEFINE_TYPE_WITH_CODE (GtkComboBox, gtk_combo_box, GTK_TYPE_BIN,
 472                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 473                                                 gtk_combo_box_cell_layout_init)
 474                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE,
 475                                                 gtk_combo_box_cell_editable_init)
 476                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 477                                                 gtk_combo_box_buildable_init))
 478
 479
 480 /* common */
 481 static void
 482 gtk_combo_box_class_init (GtkComboBoxClass *klass)
 483 {
 484   GObjectClass *object_class;
 485   GtkContainerClass *container_class;
 486   GtkWidgetClass *widget_class;
 487   GtkBindingSet *binding_set;
 488
 489   container_class = (GtkContainerClass *)klass;
 490   container_class->forall = gtk_combo_box_forall;
 491   container_class->add = gtk_combo_box_add;
 492   container_class->remove = gtk_combo_box_remove;
 493   container_class->get_path_for_child = gtk_combo_box_get_path_for_child;
 494
 495   widget_class = (GtkWidgetClass *)klass;
 496   widget_class->size_allocate = gtk_combo_box_size_allocate;
 497   widget_class->draw = gtk_combo_box_draw;
 498   widget_class->scroll_event = gtk_combo_box_scroll_event;
 499   widget_class->mnemonic_activate = gtk_combo_box_mnemonic_activate;
 500   widget_class->grab_focus = gtk_combo_box_grab_focus;
 501   widget_class->style_updated = gtk_combo_box_style_updated;
 502   widget_class->state_flags_changed = gtk_combo_box_state_flags_changed;
 503   widget_class->get_preferred_width = gtk_combo_box_get_preferred_width;
 504   widget_class->get_preferred_height = gtk_combo_box_get_preferred_height;
 505   widget_class->get_preferred_height_for_width = gtk_combo_box_get_preferred_height_for_width;
 506   widget_class->get_preferred_width_for_height = gtk_combo_box_get_preferred_width_for_height;
 507   widget_class->destroy = gtk_combo_box_destroy;
 508   widget_class->direction_changed = gtk_combo_box_direction_changed;
 509
 510   object_class = (GObjectClass *)klass;
 511   object_class->constructor = gtk_combo_box_constructor;
 512   object_class->dispose = gtk_combo_box_dispose;
 513   object_class->finalize = gtk_combo_box_finalize;
 514   object_class->set_property = gtk_combo_box_set_property;
 515   object_class->get_property = gtk_combo_box_get_property;
 516
 517   klass->format_entry_text = gtk_combo_box_format_entry_text;
 518
 519   /* signals */
 520   /**
 521    * GtkComboBox::changed:
 522    * @widget: the object which received the signal
 523    *
 524    * The changed signal is emitted when the active
 525    * item is changed. The can be due to the user selecting
 526    * a different item from the list, or due to a
 527    * call to gtk_combo_box_set_active_iter().
 528    * It will also be emitted while typing into the entry of a combo box
 529    * with an entry.
 530    *
 531    * Since: 2.4
 532    */
 533   combo_box_signals[CHANGED] =
 534     g_signal_new (I_("changed"),
 535                   G_OBJECT_CLASS_TYPE (klass),
 536                   G_SIGNAL_RUN_LAST,
 537                   G_STRUCT_OFFSET (GtkComboBoxClass, changed),
 538                   NULL, NULL,
 539                   g_cclosure_marshal_VOID__VOID,
 540                   G_TYPE_NONE, 0);
 541   /**
 542    * GtkComboBox::move-active:
 543    * @widget: the object that received the signal
 544    * @scroll_type: a #GtkScrollType
 545    *
 546    * The ::move-active signal is a
 547    * <link linkend="keybinding-signals">keybinding signal</link>
 548    * which gets emitted to move the active selection.
 549    *
 550    * Since: 2.12
 551    */
 552   combo_box_signals[MOVE_ACTIVE] =
 553     g_signal_new_class_handler (I_("move-active"),
 554                                 G_OBJECT_CLASS_TYPE (klass),
 555                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 556                                 G_CALLBACK (gtk_combo_box_real_move_active),
 557                                 NULL, NULL,
 558                                 g_cclosure_marshal_VOID__ENUM,
 559                                 G_TYPE_NONE, 1,
 560                                 GTK_TYPE_SCROLL_TYPE);
 561
 562   /**
 563    * GtkComboBox::popup:
 564    * @widget: the object that received the signal
 565    *
 566    * The ::popup signal is a
 567    * <link linkend="keybinding-signals">keybinding signal</link>
 568    * which gets emitted to popup the combo box list.
 569    *
 570    * The default binding for this signal is Alt+Down.
 571    *
 572    * Since: 2.12
 573    */
 574   combo_box_signals[POPUP] =
 575     g_signal_new_class_handler (I_("popup"),
 576                                 G_OBJECT_CLASS_TYPE (klass),
 577                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 578                                 G_CALLBACK (gtk_combo_box_real_popup),
 579                                 NULL, NULL,
 580                                 g_cclosure_marshal_VOID__VOID,
 581                                 G_TYPE_NONE, 0);
 582   /**
 583    * GtkComboBox::popdown:
 584    * @button: the object which received the signal
 585    *
 586    * The ::popdown signal is a
 587    * <link linkend="keybinding-signals">keybinding signal</link>
 588    * which gets emitted to popdown the combo box list.
 589    *
 590    * The default bindings for this signal are Alt+Up and Escape.
 591    *
 592    * Since: 2.12
 593    */
 594   combo_box_signals[POPDOWN] =
 595     g_signal_new_class_handler (I_("popdown"),
 596                                 G_OBJECT_CLASS_TYPE (klass),
 597                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 598                                 G_CALLBACK (gtk_combo_box_real_popdown),
 599                                 NULL, NULL,
 600                                 _gtk_marshal_BOOLEAN__VOID,
 601                                 G_TYPE_BOOLEAN, 0);
 602
 603   /**
 604    * GtkComboBox::format-entry-text:
 605    * @combo: the object which received the signal
 606    * @path: the GtkTreePath string from the combo box's current model to format text for
 607    *
 608    * For combo boxes that are created with an entry (See GtkComboBox:has-entry).
 609    *
 610    * A signal which allows you to change how the text displayed in a combo box's
 611    * entry is displayed.
 612    *
 613    * Connect a signal handler which returns an allocated string representing
 614    * @path. That string will then be used to set the text in the combo box's entry.
 615    * The default signal handler uses the text from the GtkComboBox::entry-text-column
 616    * model column.
 617    *
 618    * Here's an example signal handler which fetches data from the model and
 619    * displays it in the entry.
 620    * |[
 621    * static gchar*
 622    * format_entry_text_callback (GtkComboBox *combo,
 623    *                             const gchar *path,
 624    *                             gpointer     user_data)
 625    * {
 626    *   GtkTreeIter iter;
 627    *   GtkTreeModel model;
 628    *   gdouble      value;
 629    *
 630    *   model = gtk_combo_box_get_model (combo);
 631    *
 632    *   gtk_tree_model_get_iter_from_string (model, &iter, path);
 633    *   gtk_tree_model_get (model, &iter,
 634    *                       THE_DOUBLE_VALUE_COLUMN, &value,
 635    *                       -1);
 636    *
 637    *   return g_strdup_printf ("&percnt;g", value);
 638    * }
 639    * ]|
 640    *
 641    * Return value: (transfer full): a newly allocated string representing @path
 642    * for the current GtkComboBox model.
 643    *
 644    * Since: 3.4
 645    */
 646   combo_box_signals[FORMAT_ENTRY_TEXT] =
 647     g_signal_new (I_("format-entry-text"),
 648                   G_TYPE_FROM_CLASS (klass),
 649                   G_SIGNAL_RUN_LAST,
 650                   G_STRUCT_OFFSET (GtkComboBoxClass, format_entry_text),
 651                   _gtk_single_string_accumulator, NULL,
 652                   _gtk_marshal_STRING__STRING,
 653                   G_TYPE_STRING, 1, G_TYPE_STRING);
 654
 655   /* key bindings */
 656   binding_set = gtk_binding_set_by_class (widget_class);
 657
 658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, GDK_MOD1_MASK,
 659                                 "popup", 0);
 660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, GDK_MOD1_MASK,
 661                                 "popup", 0);
 662
 663   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, GDK_MOD1_MASK,
 664                                 "popdown", 0);
 665   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, GDK_MOD1_MASK,
 666                                 "popdown", 0);
 667   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
 668                                 "popdown", 0);
 669
 670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, 0,
 671                                 "move-active", 1,
 672                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
 673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, 0,
 674                                 "move-active", 1,
 675                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
 676   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Up, 0,
 677                                 "move-active", 1,
 678                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
 679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Up, 0,
 680                                 "move-active", 1,
 681                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
 682   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0,
 683                                 "move-active", 1,
 684                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
 685   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0,
 686                                 "move-active", 1,
 687                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
 688
 689   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0,
 690                                 "move-active", 1,
 691                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
 692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, 0,
 693                                 "move-active", 1,
 694                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
 695   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Down, 0,
 696                                 "move-active", 1,
 697                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
 698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Down, 0,
 699                                 "move-active", 1,
 700                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
 701   gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0,
 702                                 "move-active", 1,
 703                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END);
 704   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0,
 705                                 "move-active", 1,
 706                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END);
 707
 708   /* properties */
 709   g_object_class_override_property (object_class,
 710                                     PROP_EDITING_CANCELED,
 711                                     "editing-canceled");
 712
 713   /**
 714    * GtkComboBox:model:
 715    *
 716    * The model from which the combo box takes the values shown
 717    * in the list.
 718    *
 719    * Since: 2.4
 720    */
 721   g_object_class_install_property (object_class,
 722                                    PROP_MODEL,
 723                                    g_param_spec_object ("model",
 724                                                         P_("ComboBox model"),
 725                                                         P_("The model for the combo box"),
 726                                                         GTK_TYPE_TREE_MODEL,
 727                                                         GTK_PARAM_READWRITE));
 728
 729   /**
 730    * GtkComboBox:wrap-width:
 731    *
 732    * If wrap-width is set to a positive value, the list will be
 733    * displayed in multiple columns, the number of columns is
 734    * determined by wrap-width.
 735    *
 736    * Since: 2.4
 737    */
 738   g_object_class_install_property (object_class,
 739                                    PROP_WRAP_WIDTH,
 740                                    g_param_spec_int ("wrap-width",
 741                                                      P_("Wrap width"),
 742                                                      P_("Wrap width for laying out the items in a grid"),
 743                                                      0,
 744                                                      G_MAXINT,
 745                                                      0,
 746                                                      GTK_PARAM_READWRITE));
 747
 748
 749   /**
 750    * GtkComboBox:row-span-column:
 751    *
 752    * If this is set to a non-negative value, it must be the index of a column
 753    * of type %G_TYPE_INT in the model.
 754    *
 755    * The values of that column are used to determine how many rows a value in
 756    * the list will span. Therefore, the values in the model column pointed to
 757    * by this property must be greater than zero and not larger than wrap-width.
 758    *
 759    * Since: 2.4
 760    */
 761   g_object_class_install_property (object_class,
 762                                    PROP_ROW_SPAN_COLUMN,
 763                                    g_param_spec_int ("row-span-column",
 764                                                      P_("Row span column"),
 765                                                      P_("TreeModel column containing the row span values"),
 766                                                      -1,
 767                                                      G_MAXINT,
 768                                                      -1,
 769                                                      GTK_PARAM_READWRITE));
 770
 771
 772   /**
 773    * GtkComboBox:column-span-column:
 774    *
 775    * If this is set to a non-negative value, it must be the index of a column
 776    * of type %G_TYPE_INT in the model.
 777    *
 778    * The values of that column are used to determine how many columns a value
 779    * in the list will span.
 780    *
 781    * Since: 2.4
 782    */
 783   g_object_class_install_property (object_class,
 784                                    PROP_COLUMN_SPAN_COLUMN,
 785                                    g_param_spec_int ("column-span-column",
 786                                                      P_("Column span column"),
 787                                                      P_("TreeModel column containing the column span values"),
 788                                                      -1,
 789                                                      G_MAXINT,
 790                                                      -1,
 791                                                      GTK_PARAM_READWRITE));
 792
 793
 794   /**
 795    * GtkComboBox:active:
 796    *
 797    * The item which is currently active. If the model is a non-flat treemodel,
 798    * and the active item is not an immediate child of the root of the tree,
 799    * this property has the value
 800    * <literal>gtk_tree_path_get_indices (path)[0]</literal>,
 801    * where <literal>path</literal> is the #GtkTreePath of the active item.
 802    *
 803    * Since: 2.4
 804    */
 805   g_object_class_install_property (object_class,
 806                                    PROP_ACTIVE,
 807                                    g_param_spec_int ("active",
 808                                                      P_("Active item"),
 809                                                      P_("The item which is currently active"),
 810                                                      -1,
 811                                                      G_MAXINT,
 812                                                      -1,
 813                                                      GTK_PARAM_READWRITE));
 814
 815   /**
 816    * GtkComboBox:add-tearoffs:
 817    *
 818    * The add-tearoffs property controls whether generated menus
 819    * have tearoff menu items.
 820    *
 821    * Note that this only affects menu style combo boxes.
 822    *
 823    * Since: 2.6
 824    */
 825   g_object_class_install_property (object_class,
 826                                    PROP_ADD_TEAROFFS,
 827                                    g_param_spec_boolean ("add-tearoffs",
 828                                                          P_("Add tearoffs to menus"),
 829                                                          P_("Whether dropdowns should have a tearoff menu item"),
 830                                                          FALSE,
 831                                                          GTK_PARAM_READWRITE));
 832
 833   /**
 834    * GtkComboBox:has-frame:
 835    *
 836    * The has-frame property controls whether a frame
 837    * is drawn around the entry.
 838    *
 839    * Since: 2.6
 840    */
 841   g_object_class_install_property (object_class,
 842                                    PROP_HAS_FRAME,
 843                                    g_param_spec_boolean ("has-frame",
 844                                                          P_("Has Frame"),
 845                                                          P_("Whether the combo box draws a frame around the child"),
 846                                                          TRUE,
 847                                                          GTK_PARAM_READWRITE));
 848
 849   g_object_class_install_property (object_class,
 850                                    PROP_FOCUS_ON_CLICK,
 851                                    g_param_spec_boolean ("focus-on-click",
 852                                                          P_("Focus on click"),
 853                                                          P_("Whether the combo box grabs focus when it is clicked with the mouse"),
 854                                                          TRUE,
 855                                                          GTK_PARAM_READWRITE));
 856
 857   /**
 858    * GtkComboBox:tearoff-title:
 859    *
 860    * A title that may be displayed by the window manager
 861    * when the popup is torn-off.
 862    *
 863    * Since: 2.10
 864    */
 865   g_object_class_install_property (object_class,
 866                                    PROP_TEAROFF_TITLE,
 867                                    g_param_spec_string ("tearoff-title",
 868                                                         P_("Tearoff Title"),
 869                                                         P_("A title that may be displayed by the window manager when the popup is torn-off"),
 870                                                         NULL,
 871                                                         GTK_PARAM_READWRITE));
 872
 873
 874   /**
 875    * GtkComboBox:popup-shown:
 876    *
 877    * Whether the combo boxes dropdown is popped up.
 878    * Note that this property is mainly useful, because
 879    * it allows you to connect to notify::popup-shown.
 880    *
 881    * Since: 2.10
 882    */
 883   g_object_class_install_property (object_class,
 884                                    PROP_POPUP_SHOWN,
 885                                    g_param_spec_boolean ("popup-shown",
 886                                                          P_("Popup shown"),
 887                                                          P_("Whether the combo's dropdown is shown"),
 888                                                          FALSE,
 889                                                          GTK_PARAM_READABLE));
 890
 891
 892    /**
 893     * GtkComboBox:button-sensitivity:
 894     *
 895     * Whether the dropdown button is sensitive when
 896     * the model is empty.
 897     *
 898     * Since: 2.14
 899     */
 900    g_object_class_install_property (object_class,
 901                                     PROP_BUTTON_SENSITIVITY,
 902                                     g_param_spec_enum ("button-sensitivity",
 903                                                        P_("Button Sensitivity"),
 904                                                        P_("Whether the dropdown button is sensitive when the model is empty"),
 905                                                        GTK_TYPE_SENSITIVITY_TYPE,
 906                                                        GTK_SENSITIVITY_AUTO,
 907                                                        GTK_PARAM_READWRITE));
 908
 909    /**
 910     * GtkComboBox:has-entry:
 911     *
 912     * Whether the combo box has an entry.
 913     *
 914     * Since: 2.24
 915     */
 916    g_object_class_install_property (object_class,
 917                                     PROP_HAS_ENTRY,
 918                                     g_param_spec_boolean ("has-entry",
 919                                                           P_("Has Entry"),
 920                                                           P_("Whether combo box has an entry"),
 921                                                           FALSE,
 922                                                           GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 923
 924    /**
 925     * GtkComboBox:entry-text-column:
 926     *
 927     * The column in the combo box's model to associate with strings from the entry
 928     * if the combo was created with #GtkComboBox:has-entry = %TRUE.
 929     *
 930     * Since: 2.24
 931     */
 932    g_object_class_install_property (object_class,
 933                                     PROP_ENTRY_TEXT_COLUMN,
 934                                     g_param_spec_int ("entry-text-column",
 935                                                       P_("Entry Text Column"),
 936                                                       P_("The column in the combo box's model to associate "
 937                                                          "with strings from the entry if the combo was "
 938                                                          "created with #GtkComboBox:has-entry = %TRUE"),
 939                                                       -1, G_MAXINT, -1,
 940                                                       GTK_PARAM_READWRITE));
 941
 942    /**
 943     * GtkComboBox:id-column:
 944     *
 945     * The column in the combo box's model that provides string
 946     * IDs for the values in the model, if != -1.
 947     *
 948     * Since: 3.0
 949     */
 950    g_object_class_install_property (object_class,
 951                                     PROP_ID_COLUMN,
 952                                     g_param_spec_int ("id-column",
 953                                                       P_("ID Column"),
 954                                                       P_("The column in the combo box's model that provides "
 955                                                       "string IDs for the values in the model"),
 956                                                       -1, G_MAXINT, -1,
 957                                                       GTK_PARAM_READWRITE));
 958
 959    /**
 960     * GtkComboBox:active-id:
 961     *
 962     * The value of the ID column of the active row.
 963     *
 964     * Since: 3.0
 965     */
 966    g_object_class_install_property (object_class,
 967                                     PROP_ACTIVE_ID,
 968                                     g_param_spec_string ("active-id",
 969                                                          P_("Active id"),
 970                                                          P_("The value of the id column "
 971                                                          "for the active row"),
 972                                                          NULL, GTK_PARAM_READWRITE));
 973
 974    /**
 975     * GtkComboBox:popup-fixed-width:
 976     *
 977     * Whether the popup's width should be a fixed width matching the
 978     * allocated width of the combo box.
 979     *
 980     * Since: 3.0
 981     */
 982    g_object_class_install_property (object_class,
 983                                     PROP_POPUP_FIXED_WIDTH,
 984                                     g_param_spec_boolean ("popup-fixed-width",
 985                                                           P_("Popup Fixed Width"),
 986                                                           P_("Whether the popup's width should be a "
 987                                                              "fixed width matching the allocated width "
 988                                                              "of the combo box"),
 989                                                           TRUE,
 990                                                           GTK_PARAM_READWRITE));
 991
 992    /**
 993     * GtkComboBox:cell-area:
 994     *
 995     * The #GtkCellArea used to layout cell renderers for this combo box.
 996     *
 997     * If no area is specified when creating the combo box with gtk_combo_box_new_with_area()
 998     * a horizontally oriented #GtkCellAreaBox will be used.
 999     *
1000     * Since: 3.0
1001     */
1002    g_object_class_install_property (object_class,
1003                                     PROP_CELL_AREA,
1004                                     g_param_spec_object ("cell-area",
1005                                                          P_("Cell Area"),
1006                                                          P_("The GtkCellArea used to layout cells"),
1007                                                          GTK_TYPE_CELL_AREA,
1008                                                          GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
1009
1010   gtk_widget_class_install_style_property (widget_class,
1011                                            g_param_spec_boolean ("appears-as-list",
1012                                                                  P_("Appears as list"),
1013                                                                  P_("Whether dropdowns should look like lists rather than menus"),
1014                                                                  FALSE,
1015                                                                  GTK_PARAM_READABLE));
1016
1017   /**
1018    * GtkComboBox:arrow-size:
1019    *
1020    * Sets the minimum size of the arrow in the combo box.  Note
1021    * that the arrow size is coupled to the font size, so in case
1022    * a larger font is used, the arrow will be larger than set
1023    * by arrow size.
1024    *
1025    * Since: 2.12
1026    */
1027   gtk_widget_class_install_style_property (widget_class,
1028                                            g_param_spec_int ("arrow-size",
1029                                                              P_("Arrow Size"),
1030                                                              P_("The minimum size of the arrow in the combo box"),
1031                                                              0,
1032                                                              G_MAXINT,
1033                                                              15,
1034                                                              GTK_PARAM_READABLE));
1035
1036   /**
1037    * GtkComboBox:arrow-scaling:
1038    *
1039    * Sets the amount of space used up by the combobox arrow,
1040    * proportional to the font size.
1041    *
1042    * Since: 3.2
1043    */
1044   gtk_widget_class_install_style_property (widget_class,
1045                                            g_param_spec_float ("arrow-scaling",
1046                                                                P_("Arrow Scaling"),
1047                                                                P_("The amount of space used by the arrow"),
1048                                                              0,
1049                                                              2.0,
1050                                                              1.0,
1051                                                              GTK_PARAM_READABLE));
1052
1053   /**
1054    * GtkComboBox:shadow-type:
1055    *
1056    * Which kind of shadow to draw around the combo box.
1057    *
1058    * Since: 2.12
1059    */
1060   gtk_widget_class_install_style_property (widget_class,
1061                                            g_param_spec_enum ("shadow-type",
1062                                                               P_("Shadow type"),
1063                                                               P_("Which kind of shadow to draw around the combo box"),
1064                                                               GTK_TYPE_SHADOW_TYPE,
1065                                                               GTK_SHADOW_NONE,
1066                                                               GTK_PARAM_READABLE));
1067
1068   g_type_class_add_private (object_class, sizeof (GtkComboBoxPrivate));
1069
1070   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COMBO_BOX_ACCESSIBLE);
1071 }
1072
1073 static void
1074 gtk_combo_box_buildable_init (GtkBuildableIface *iface)
1075 {
1076   parent_buildable_iface = g_type_interface_peek_parent (iface);
1077   iface->add_child = _gtk_cell_layout_buildable_add_child;
1078   iface->custom_tag_start = gtk_combo_box_buildable_custom_tag_start;
1079   iface->custom_tag_end = gtk_combo_box_buildable_custom_tag_end;
1080   iface->get_internal_child = gtk_combo_box_buildable_get_internal_child;
1081 }
1082
1083 static void
1084 gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface)
1085 {
1086   iface->get_area = gtk_combo_box_cell_layout_get_area;
1087 }
1088
1089 static void
1090 gtk_combo_box_cell_editable_init (GtkCellEditableIface *iface)
1091 {
1092   iface->start_editing = gtk_combo_box_start_editing;
1093 }
1094
1095 static void
1096 gtk_combo_box_init (GtkComboBox *combo_box)
1097 {
1098   GtkComboBoxPrivate *priv;
1099
1100   combo_box->priv = G_TYPE_INSTANCE_GET_PRIVATE (combo_box,
1101                                                  GTK_TYPE_COMBO_BOX,
1102                                                  GtkComboBoxPrivate);
1103   priv = combo_box->priv;
1104
1105   priv->wrap_width = 0;
1106
1107   priv->active = -1;
1108   priv->active_row = NULL;
1109   priv->col_column = -1;
1110   priv->row_column = -1;
1111
1112   priv->popup_shown = FALSE;
1113   priv->add_tearoffs = FALSE;
1114   priv->has_frame = TRUE;
1115   priv->is_cell_renderer = FALSE;
1116   priv->editing_canceled = FALSE;
1117   priv->auto_scroll = FALSE;
1118   priv->focus_on_click = TRUE;
1119   priv->button_sensitivity = GTK_SENSITIVITY_AUTO;
1120   priv->has_entry = FALSE;
1121   priv->popup_fixed_width = TRUE;
1122
1123   priv->text_column = -1;
1124   priv->text_renderer = NULL;
1125   priv->id_column = -1;
1126 }
1127
1128 static void
1129 gtk_combo_box_set_property (GObject      *object,
1130                             guint         prop_id,
1131                             const GValue *value,
1132                             GParamSpec   *pspec)
1133 {
1134   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
1135   GtkComboBoxPrivate *priv = combo_box->priv;
1136   GtkCellArea *area;
1137
1138   switch (prop_id)
1139     {
1140     case PROP_MODEL:
1141       gtk_combo_box_set_model (combo_box, g_value_get_object (value));
1142       break;
1143
1144     case PROP_WRAP_WIDTH:
1145       gtk_combo_box_set_wrap_width (combo_box, g_value_get_int (value));
1146       break;
1147
1148     case PROP_ROW_SPAN_COLUMN:
1149       gtk_combo_box_set_row_span_column (combo_box, g_value_get_int (value));
1150       break;
1151
1152     case PROP_COLUMN_SPAN_COLUMN:
1153       gtk_combo_box_set_column_span_column (combo_box, g_value_get_int (value));
1154       break;
1155
1156     case PROP_ACTIVE:
1157       gtk_combo_box_set_active (combo_box, g_value_get_int (value));
1158       break;
1159
1160     case PROP_ADD_TEAROFFS:
1161       gtk_combo_box_set_add_tearoffs (combo_box, g_value_get_boolean (value));
1162       break;
1163
1164     case PROP_HAS_FRAME:
1165       priv->has_frame = g_value_get_boolean (value);
1166
1167       if (priv->has_entry)
1168         {
1169           GtkWidget *child;
1170
1171           child = gtk_bin_get_child (GTK_BIN (combo_box));
1172
1173           gtk_entry_set_has_frame (GTK_ENTRY (child), priv->has_frame);
1174         }
1175
1176       break;
1177
1178     case PROP_FOCUS_ON_CLICK:
1179       gtk_combo_box_set_focus_on_click (combo_box,
1180                                         g_value_get_boolean (value));
1181       break;
1182
1183     case PROP_TEAROFF_TITLE:
1184       gtk_combo_box_set_title (combo_box, g_value_get_string (value));
1185       break;
1186
1187     case PROP_POPUP_SHOWN:
1188       if (g_value_get_boolean (value))
1189         gtk_combo_box_popup (combo_box);
1190       else
1191         gtk_combo_box_popdown (combo_box);
1192       break;
1193
1194     case PROP_BUTTON_SENSITIVITY:
1195       gtk_combo_box_set_button_sensitivity (combo_box,
1196                                             g_value_get_enum (value));
1197       break;
1198
1199     case PROP_POPUP_FIXED_WIDTH:
1200       gtk_combo_box_set_popup_fixed_width (combo_box,
1201                                            g_value_get_boolean (value));
1202       break;
1203
1204     case PROP_EDITING_CANCELED:
1205       priv->editing_canceled = g_value_get_boolean (value);
1206       break;
1207
1208     case PROP_HAS_ENTRY:
1209       priv->has_entry = g_value_get_boolean (value);
1210       break;
1211
1212     case PROP_ENTRY_TEXT_COLUMN:
1213       gtk_combo_box_set_entry_text_column (combo_box, g_value_get_int (value));
1214       break;
1215
1216     case PROP_ID_COLUMN:
1217       gtk_combo_box_set_id_column (combo_box, g_value_get_int (value));
1218       break;
1219
1220     case PROP_ACTIVE_ID:
1221       gtk_combo_box_set_active_id (combo_box, g_value_get_string (value));
1222       break;
1223
1224     case PROP_CELL_AREA:
1225       /* Construct-only, can only be assigned once */
1226       area = g_value_get_object (value);
1227       if (area)
1228         {
1229           if (priv->area != NULL)
1230             {
1231               g_warning ("cell-area has already been set, ignoring construct property");
1232               g_object_ref_sink (area);
1233               g_object_unref (area);
1234             }
1235           else
1236             priv->area = g_object_ref_sink (area);
1237         }
1238       break;
1239
1240     default:
1241       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1242       break;
1243     }
1244 }
1245
1246 static void
1247 gtk_combo_box_get_property (GObject    *object,
1248                             guint       prop_id,
1249                             GValue     *value,
1250                             GParamSpec *pspec)
1251 {
1252   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
1253   GtkComboBoxPrivate *priv = combo_box->priv;
1254
1255   switch (prop_id)
1256     {
1257       case PROP_MODEL:
1258         g_value_set_object (value, combo_box->priv->model);
1259         break;
1260
1261       case PROP_WRAP_WIDTH:
1262         g_value_set_int (value, combo_box->priv->wrap_width);
1263         break;
1264
1265       case PROP_ROW_SPAN_COLUMN:
1266         g_value_set_int (value, combo_box->priv->row_column);
1267         break;
1268
1269       case PROP_COLUMN_SPAN_COLUMN:
1270         g_value_set_int (value, combo_box->priv->col_column);
1271         break;
1272
1273       case PROP_ACTIVE:
1274         g_value_set_int (value, gtk_combo_box_get_active (combo_box));
1275         break;
1276
1277       case PROP_ADD_TEAROFFS:
1278         g_value_set_boolean (value, gtk_combo_box_get_add_tearoffs (combo_box));
1279         break;
1280
1281       case PROP_HAS_FRAME:
1282         g_value_set_boolean (value, combo_box->priv->has_frame);
1283         break;
1284
1285       case PROP_FOCUS_ON_CLICK:
1286         g_value_set_boolean (value, combo_box->priv->focus_on_click);
1287         break;
1288
1289       case PROP_TEAROFF_TITLE:
1290         g_value_set_string (value, gtk_combo_box_get_title (combo_box));
1291         break;
1292
1293       case PROP_POPUP_SHOWN:
1294         g_value_set_boolean (value, combo_box->priv->popup_shown);
1295         break;
1296
1297       case PROP_BUTTON_SENSITIVITY:
1298         g_value_set_enum (value, combo_box->priv->button_sensitivity);
1299         break;
1300
1301       case PROP_POPUP_FIXED_WIDTH:
1302         g_value_set_boolean (value, combo_box->priv->popup_fixed_width);
1303         break;
1304
1305       case PROP_EDITING_CANCELED:
1306         g_value_set_boolean (value, priv->editing_canceled);
1307         break;
1308
1309       case PROP_HAS_ENTRY:
1310         g_value_set_boolean (value, priv->has_entry);
1311         break;
1312
1313       case PROP_ENTRY_TEXT_COLUMN:
1314         g_value_set_int (value, priv->text_column);
1315         break;
1316
1317       case PROP_ID_COLUMN:
1318         g_value_set_int (value, priv->id_column);
1319         break;
1320
1321       case PROP_ACTIVE_ID:
1322         g_value_set_string (value, gtk_combo_box_get_active_id (combo_box));
1323         break;
1324
1325       case PROP_CELL_AREA:
1326         g_value_set_object (value, priv->area);
1327         break;
1328
1329       default:
1330         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1331         break;
1332     }
1333 }
1334
1335 static void
1336 gtk_combo_box_state_flags_changed (GtkWidget     *widget,
1337                                    GtkStateFlags  previous)
1338 {
1339   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1340   GtkComboBoxPrivate *priv = combo_box->priv;
1341
1342   if (gtk_widget_get_realized (widget))
1343     {
1344       if (priv->tree_view && priv->cell_view)
1345         {
1346           GtkStyleContext *context;
1347           GtkStateFlags state;
1348           GdkRGBA color;
1349
1350           context  = gtk_widget_get_style_context (widget);
1351           state = gtk_widget_get_state_flags (widget);
1352           gtk_style_context_get_background_color (context, state, &color);
1353
1354           gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
1355         }
1356     }
1357
1358   gtk_widget_queue_draw (widget);
1359 }
1360
1361 static void
1362 gtk_combo_box_button_state_flags_changed (GtkWidget     *widget,
1363                                           GtkStateFlags  previous,
1364                                           gpointer       data)
1365 {
1366   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
1367   GtkComboBoxPrivate *priv = combo_box->priv;
1368
1369   if (gtk_widget_get_realized (widget))
1370     {
1371       if (!priv->tree_view && priv->cell_view)
1372         gtk_widget_set_state_flags (priv->cell_view,
1373                                     gtk_widget_get_state_flags (widget),
1374                                     TRUE);
1375     }
1376
1377   gtk_widget_queue_draw (widget);
1378 }
1379
1380 static void
1381 gtk_combo_box_invalidate_order (GtkComboBox *combo_box)
1382 {
1383   gtk_container_forall (GTK_CONTAINER (combo_box),
1384                         (GtkCallback) gtk_widget_reset_style,
1385                         NULL);
1386 }
1387
1388 static void
1389 gtk_combo_box_direction_changed (GtkWidget        *widget,
1390                                  GtkTextDirection  previous_direction)
1391 {
1392   gtk_combo_box_invalidate_order (GTK_COMBO_BOX (widget));
1393 }
1394
1395 static GtkWidgetPath *
1396 gtk_combo_box_get_path_for_child (GtkContainer *container,
1397                                   GtkWidget    *child)
1398 {
1399   GtkComboBoxPrivate *priv = GTK_COMBO_BOX (container)->priv;
1400   GtkWidgetPath *path;
1401   GtkWidget *widget;
1402   gboolean found = FALSE;
1403   GList *visible_children, *l;
1404   GtkWidgetPath *sibling_path;
1405   int pos;
1406
1407   path = gtk_widget_path_copy (gtk_widget_get_path (GTK_WIDGET (container)));
1408
1409   if (gtk_widget_get_visible (child))
1410     {
1411       visible_children = NULL;
1412
1413       if (priv->button && gtk_widget_get_visible (priv->button))
1414         visible_children = g_list_prepend (visible_children, priv->button);
1415
1416       if (priv->cell_view_frame && gtk_widget_get_visible (priv->cell_view_frame))
1417         visible_children = g_list_prepend (visible_children, priv->cell_view_frame);
1418
1419       widget = gtk_bin_get_child (GTK_BIN (container));
1420       if (widget && gtk_widget_get_visible (widget))
1421         visible_children = g_list_prepend (visible_children, widget);
1422
1423       if (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL)
1424         visible_children = g_list_reverse (visible_children);
1425
1426       pos = 0;
1427
1428       for (l = visible_children; l; l = l->next)
1429         {
1430           widget = l->data;
1431
1432           if (widget == child)
1433             {
1434               found = TRUE;
1435               break;
1436             }
1437
1438           pos++;
1439         }
1440     }
1441
1442   if (found)
1443     {
1444       sibling_path = gtk_widget_path_new ();
1445
1446       for (l = visible_children; l; l = l->next)
1447         gtk_widget_path_append_for_widget (sibling_path, l->data);
1448
1449       gtk_widget_path_append_with_siblings (path, sibling_path, pos);
1450
1451       g_list_free (visible_children);
1452       gtk_widget_path_unref (sibling_path);
1453     }
1454   else
1455     {
1456       gtk_widget_path_append_for_widget (path, child);
1457     }
1458
1459   return path;
1460 }
1461
1462 static void
1463 gtk_combo_box_check_appearance (GtkComboBox *combo_box)
1464 {
1465   GtkComboBoxPrivate *priv = combo_box->priv;
1466   gboolean appears_as_list;
1467
1468   /* if wrap_width > 0, then we are in grid-mode and forced to use
1469    * unix style
1470    */
1471   if (priv->wrap_width)
1472     appears_as_list = FALSE;
1473   else
1474     gtk_widget_style_get (GTK_WIDGET (combo_box),
1475                           "appears-as-list", &appears_as_list,
1476                           NULL);
1477
1478   if (appears_as_list)
1479     {
1480       /* Destroy all the menu mode widgets, if they exist. */
1481       if (GTK_IS_MENU (priv->popup_widget))
1482         gtk_combo_box_menu_destroy (combo_box);
1483
1484       /* Create the list mode widgets, if they don't already exist. */
1485       if (!GTK_IS_TREE_VIEW (priv->tree_view))
1486         gtk_combo_box_list_setup (combo_box);
1487     }
1488   else
1489     {
1490       /* Destroy all the list mode widgets, if they exist. */
1491       if (GTK_IS_TREE_VIEW (priv->tree_view))
1492         gtk_combo_box_list_destroy (combo_box);
1493
1494       /* Create the menu mode widgets, if they don't already exist. */
1495       if (!GTK_IS_MENU (priv->popup_widget))
1496         gtk_combo_box_menu_setup (combo_box, TRUE);
1497     }
1498
1499   gtk_widget_style_get (GTK_WIDGET (combo_box),
1500                         "shadow-type", &priv->shadow_type,
1501                         NULL);
1502 }
1503
1504 static void
1505 gtk_combo_box_style_updated (GtkWidget *widget)
1506 {
1507   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1508   GtkComboBoxPrivate *priv = combo_box->priv;
1509   GtkWidget *child;
1510
1511   GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->style_updated (widget);
1512
1513   gtk_combo_box_check_appearance (combo_box);
1514
1515   if (priv->tree_view && priv->cell_view)
1516     {
1517       GtkStyleContext *context;
1518       GtkStateFlags state;
1519       GdkRGBA color;
1520
1521       context  = gtk_widget_get_style_context (widget);
1522       state = gtk_widget_get_state_flags (widget);
1523       gtk_style_context_get_background_color (context, state, &color);
1524
1525       gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
1526     }
1527
1528   child = gtk_bin_get_child (GTK_BIN (combo_box));
1529   if (GTK_IS_ENTRY (child))
1530     g_object_set (child, "shadow-type",
1531                   GTK_SHADOW_NONE == priv->shadow_type ?
1532                   GTK_SHADOW_IN : GTK_SHADOW_NONE, NULL);
1533 }
1534
1535 static void
1536 gtk_combo_box_button_toggled (GtkWidget *widget,
1537                               gpointer   data)
1538 {
1539   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
1540
1541   if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
1542     {
1543       if (!combo_box->priv->popup_in_progress)
1544         gtk_combo_box_popup (combo_box);
1545     }
1546   else
1547     gtk_combo_box_popdown (combo_box);
1548 }
1549
1550 static void
1551 gtk_combo_box_add (GtkContainer *container,
1552                    GtkWidget    *widget)
1553 {
1554   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
1555   GtkComboBoxPrivate *priv = combo_box->priv;
1556
1557   if (priv->has_entry && !GTK_IS_ENTRY (widget))
1558     {
1559       g_warning ("Attempting to add a widget with type %s to a GtkComboBox that needs an entry "
1560                  "(need an instance of GtkEntry or of a subclass)",
1561                  G_OBJECT_TYPE_NAME (widget));
1562       return;
1563     }
1564
1565   if (priv->cell_view &&
1566       gtk_widget_get_parent (priv->cell_view))
1567     {
1568       gtk_widget_unparent (priv->cell_view);
1569       _gtk_bin_set_child (GTK_BIN (container), NULL);
1570       gtk_widget_queue_resize (GTK_WIDGET (container));
1571     }
1572
1573   gtk_widget_set_parent (widget, GTK_WIDGET (container));
1574   _gtk_bin_set_child (GTK_BIN (container), widget);
1575
1576   if (priv->cell_view &&
1577       widget != priv->cell_view)
1578     {
1579       /* since the cell_view was unparented, it's gone now */
1580       priv->cell_view = NULL;
1581
1582       if (!priv->tree_view && priv->separator)
1583         {
1584           gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (priv->separator)),
1585                                 priv->separator);
1586           priv->separator = NULL;
1587
1588           gtk_widget_queue_resize (GTK_WIDGET (container));
1589         }
1590       else if (priv->cell_view_frame)
1591         {
1592           gtk_widget_unparent (priv->cell_view_frame);
1593           priv->cell_view_frame = NULL;
1594           priv->box = NULL;
1595         }
1596     }
1597
1598   if (priv->has_entry)
1599     {
1600       /* this flag is a hack to tell the entry to fill its allocation.
1601        */
1602       _gtk_entry_set_is_cell_renderer (GTK_ENTRY (widget), TRUE);
1603
1604       g_signal_connect (widget, "changed",
1605                         G_CALLBACK (gtk_combo_box_entry_contents_changed),
1606                         combo_box);
1607
1608       gtk_entry_set_has_frame (GTK_ENTRY (widget), priv->has_frame);
1609     }
1610 }
1611
1612 static void
1613 gtk_combo_box_remove (GtkContainer *container,
1614                       GtkWidget    *widget)
1615 {
1616   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
1617   GtkComboBoxPrivate *priv = combo_box->priv;
1618   GtkTreePath *path;
1619   gboolean appears_as_list;
1620
1621   if (priv->has_entry)
1622     {
1623       GtkWidget *child_widget;
1624
1625       child_widget = gtk_bin_get_child (GTK_BIN (container));
1626       if (widget && widget == child_widget)
1627         {
1628           g_signal_handlers_disconnect_by_func (widget,
1629                                                 gtk_combo_box_entry_contents_changed,
1630                                                 container);
1631           _gtk_entry_set_is_cell_renderer (GTK_ENTRY (widget), FALSE);
1632         }
1633     }
1634
1635   if (widget == priv->cell_view)
1636     priv->cell_view = NULL;
1637
1638   gtk_widget_unparent (widget);
1639   _gtk_bin_set_child (GTK_BIN (container), NULL);
1640
1641   if (gtk_widget_in_destruction (GTK_WIDGET (combo_box)))
1642     return;
1643
1644   gtk_widget_queue_resize (GTK_WIDGET (container));
1645
1646   if (!priv->tree_view)
1647     appears_as_list = FALSE;
1648   else
1649     appears_as_list = TRUE;
1650
1651   if (appears_as_list)
1652     gtk_combo_box_list_destroy (combo_box);
1653   else if (GTK_IS_MENU (priv->popup_widget))
1654     {
1655       gtk_combo_box_menu_destroy (combo_box);
1656       gtk_menu_detach (GTK_MENU (priv->popup_widget));
1657       priv->popup_widget = NULL;
1658     }
1659
1660   if (!priv->cell_view)
1661     {
1662       priv->cell_view = gtk_cell_view_new ();
1663       gtk_widget_set_parent (priv->cell_view, GTK_WIDGET (container));
1664       _gtk_bin_set_child (GTK_BIN (container), priv->cell_view);
1665
1666       gtk_widget_show (priv->cell_view);
1667       gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view),
1668                                priv->model);
1669     }
1670
1671
1672   if (appears_as_list)
1673     gtk_combo_box_list_setup (combo_box);
1674   else
1675     gtk_combo_box_menu_setup (combo_box, TRUE);
1676
1677   if (gtk_tree_row_reference_valid (priv->active_row))
1678     {
1679       path = gtk_tree_row_reference_get_path (priv->active_row);
1680       gtk_combo_box_set_active_internal (combo_box, path);
1681       gtk_tree_path_free (path);
1682     }
1683   else
1684     gtk_combo_box_set_active_internal (combo_box, NULL);
1685 }
1686
1687 static void
1688 gtk_combo_box_menu_show (GtkWidget *menu,
1689                          gpointer   user_data)
1690 {
1691   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1692   GtkComboBoxPrivate *priv = combo_box->priv;
1693
1694   gtk_combo_box_child_show (menu, user_data);
1695
1696   priv->popup_in_progress = TRUE;
1697   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
1698                                 TRUE);
1699   priv->popup_in_progress = FALSE;
1700 }
1701
1702 static void
1703 gtk_combo_box_menu_hide (GtkWidget *menu,
1704                          gpointer   user_data)
1705 {
1706   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1707
1708   gtk_combo_box_child_hide (menu,user_data);
1709
1710   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
1711                                 FALSE);
1712 }
1713
1714 static void
1715 gtk_combo_box_detacher (GtkWidget *widget,
1716                         GtkMenu          *menu)
1717 {
1718   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1719   GtkComboBoxPrivate *priv = combo_box->priv;
1720
1721   g_return_if_fail (priv->popup_widget == (GtkWidget *) menu);
1722
1723   g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
1724                                         gtk_combo_box_menu_show,
1725                                         combo_box);
1726   g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
1727                                         gtk_combo_box_menu_hide,
1728                                         combo_box);
1729
1730   priv->popup_widget = NULL;
1731 }
1732
1733 static void
1734 gtk_combo_box_set_popup_widget (GtkComboBox *combo_box,
1735                                 GtkWidget   *popup)
1736 {
1737   GtkComboBoxPrivate *priv = combo_box->priv;
1738
1739   if (GTK_IS_MENU (priv->popup_widget))
1740     {
1741       gtk_menu_detach (GTK_MENU (priv->popup_widget));
1742       priv->popup_widget = NULL;
1743     }
1744   else if (priv->popup_widget)
1745     {
1746       gtk_container_remove (GTK_CONTAINER (priv->scrolled_window),
1747                             priv->popup_widget);
1748       g_object_unref (priv->popup_widget);
1749       priv->popup_widget = NULL;
1750     }
1751
1752   if (GTK_IS_MENU (popup))
1753     {
1754       if (priv->popup_window)
1755         {
1756           gtk_widget_destroy (priv->popup_window);
1757           priv->popup_window = NULL;
1758         }
1759
1760       priv->popup_widget = popup;
1761
1762       /*
1763        * Note that we connect to show/hide on the toplevel, not the
1764        * menu itself, since the menu is not shown/hidden when it is
1765        * popped up while torn-off.
1766        */
1767       g_signal_connect (GTK_MENU (popup)->priv->toplevel, "show",
1768                         G_CALLBACK (gtk_combo_box_menu_show), combo_box);
1769       g_signal_connect (GTK_MENU (popup)->priv->toplevel, "hide",
1770                         G_CALLBACK (gtk_combo_box_menu_hide), combo_box);
1771
1772       gtk_menu_attach_to_widget (GTK_MENU (popup),
1773                                  GTK_WIDGET (combo_box),
1774                                  gtk_combo_box_detacher);
1775     }
1776   else
1777     {
1778       if (!priv->popup_window)
1779         {
1780           GtkWidget *toplevel;
1781
1782           priv->popup_window = gtk_window_new (GTK_WINDOW_POPUP);
1783           gtk_widget_set_name (priv->popup_window, "gtk-combobox-popup-window");
1784
1785           gtk_window_set_type_hint (GTK_WINDOW (priv->popup_window),
1786                                     GDK_WINDOW_TYPE_HINT_COMBO);
1787
1788           g_signal_connect (GTK_WINDOW (priv->popup_window),"show",
1789                             G_CALLBACK (gtk_combo_box_child_show),
1790                             combo_box);
1791           g_signal_connect (GTK_WINDOW (priv->popup_window),"hide",
1792                             G_CALLBACK (gtk_combo_box_child_hide),
1793                             combo_box);
1794
1795           toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
1796           if (GTK_IS_WINDOW (toplevel))
1797             {
1798               gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
1799                                            GTK_WINDOW (priv->popup_window));
1800               gtk_window_set_transient_for (GTK_WINDOW (priv->popup_window),
1801                                             GTK_WINDOW (toplevel));
1802             }
1803
1804           gtk_window_set_resizable (GTK_WINDOW (priv->popup_window), FALSE);
1805           gtk_window_set_screen (GTK_WINDOW (priv->popup_window),
1806                                  gtk_widget_get_screen (GTK_WIDGET (combo_box)));
1807
1808           priv->scrolled_window = gtk_scrolled_window_new (NULL, NULL);
1809
1810           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
1811                                           GTK_POLICY_NEVER,
1812                                           GTK_POLICY_NEVER);
1813           gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->scrolled_window),
1814                                                GTK_SHADOW_IN);
1815
1816           gtk_widget_show (priv->scrolled_window);
1817
1818           gtk_container_add (GTK_CONTAINER (priv->popup_window),
1819                              priv->scrolled_window);
1820         }
1821
1822       gtk_container_add (GTK_CONTAINER (priv->scrolled_window),
1823                          popup);
1824
1825       gtk_widget_show (popup);
1826       g_object_ref (popup);
1827       priv->popup_widget = popup;
1828     }
1829 }
1830
1831 static void
1832 get_widget_padding_and_border (GtkWidget *widget,
1833                                GtkBorder *padding)
1834 {
1835   GtkStyleContext *context;
1836   GtkStateFlags state;
1837   GtkBorder tmp;
1838
1839   context = gtk_widget_get_style_context (widget);
1840   state = gtk_style_context_get_state (context);
1841
1842   gtk_style_context_get_padding (context, state, padding);
1843   gtk_style_context_get_border (context, state, &tmp);
1844
1845   padding->top += tmp.top;
1846   padding->right += tmp.right;
1847   padding->bottom += tmp.bottom;
1848   padding->left += tmp.left;
1849 }
1850
1851 static void
1852 gtk_combo_box_menu_position_below (GtkMenu  *menu,
1853                                    gint     *x,
1854                                    gint     *y,
1855                                    gint     *push_in,
1856                                    gpointer  user_data)
1857 {
1858   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1859   GtkAllocation child_allocation;
1860   gint sx, sy;
1861   GtkWidget *child;
1862   GtkRequisition req;
1863   GdkScreen *screen;
1864   gint monitor_num;
1865   GdkRectangle monitor;
1866   GtkBorder padding;
1867
1868   /* FIXME: is using the size request here broken? */
1869   child = gtk_bin_get_child (GTK_BIN (combo_box));
1870
1871   sx = sy = 0;
1872
1873   gtk_widget_get_allocation (child, &child_allocation);
1874
1875   if (!gtk_widget_get_has_window (child))
1876     {
1877       sx += child_allocation.x;
1878       sy += child_allocation.y;
1879     }
1880
1881   gdk_window_get_root_coords (gtk_widget_get_window (child),
1882                               sx, sy, &sx, &sy);
1883   get_widget_padding_and_border (GTK_WIDGET (combo_box), &padding);
1884   sx -= padding.left;
1885
1886   if (combo_box->priv->popup_fixed_width)
1887     gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
1888   else
1889     gtk_widget_get_preferred_size (GTK_WIDGET (menu), NULL, &req);
1890
1891   if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_LTR)
1892     *x = sx;
1893   else
1894     *x = sx + child_allocation.width - req.width;
1895   *y = sy;
1896
1897   screen = gtk_widget_get_screen (GTK_WIDGET (combo_box));
1898   monitor_num = gdk_screen_get_monitor_at_window (screen,
1899                                                   gtk_widget_get_window (GTK_WIDGET (combo_box)));
1900   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
1901
1902   if (*x < monitor.x)
1903     *x = monitor.x;
1904   else if (*x + req.width > monitor.x + monitor.width)
1905     *x = monitor.x + monitor.width - req.width;
1906
1907   if (monitor.y + monitor.height - *y - child_allocation.height >= req.height)
1908     *y += child_allocation.height;
1909   else if (*y - monitor.y >= req.height)
1910     *y -= req.height;
1911   else if (monitor.y + monitor.height - *y - child_allocation.height > *y - monitor.y)
1912     *y += child_allocation.height;
1913   else
1914     *y -= req.height;
1915
1916    *push_in = FALSE;
1917 }
1918
1919 static void
1920 gtk_combo_box_menu_position_over (GtkMenu  *menu,
1921                                   gint     *x,
1922                                   gint     *y,
1923                                   gboolean *push_in,
1924                                   gpointer  user_data)
1925 {
1926   GtkComboBox    *combo_box;
1927   GtkWidget      *active;
1928   GtkWidget      *child;
1929   GtkWidget      *widget;
1930   GtkAllocation   allocation;
1931   GtkAllocation   child_allocation;
1932   GList          *children;
1933   gint            screen_width;
1934   gint            menu_xpos;
1935   gint            menu_ypos;
1936   gint            menu_width;
1937
1938   combo_box = GTK_COMBO_BOX (user_data);
1939   widget = GTK_WIDGET (combo_box);
1940
1941   active = gtk_menu_get_active (GTK_MENU (combo_box->priv->popup_widget));
1942
1943   gtk_widget_get_allocation (widget, &allocation);
1944
1945   menu_xpos = allocation.x;
1946   menu_ypos = allocation.y + allocation.height / 2 - 2;
1947
1948   if (combo_box->priv->popup_fixed_width)
1949     gtk_widget_get_preferred_width (GTK_WIDGET (menu), &menu_width, NULL);
1950   else
1951     gtk_widget_get_preferred_width (GTK_WIDGET (menu), NULL, &menu_width);
1952
1953   if (active != NULL)
1954     {
1955       gtk_widget_get_allocation (active, &child_allocation);
1956       menu_ypos -= child_allocation.height / 2;
1957     }
1958
1959   children = GTK_MENU_SHELL (combo_box->priv->popup_widget)->priv->children;
1960   while (children)
1961     {
1962       child = children->data;
1963
1964       if (active == child)
1965         break;
1966
1967       if (gtk_widget_get_visible (child))
1968         {
1969           gtk_widget_get_allocation (child, &child_allocation);
1970
1971           menu_ypos -= child_allocation.height;
1972         }
1973
1974       children = children->next;
1975     }
1976
1977   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
1978     menu_xpos = menu_xpos + allocation.width - menu_width;
1979
1980   gdk_window_get_root_coords (gtk_widget_get_window (widget),
1981                               menu_xpos, menu_ypos,
1982                               &menu_xpos, &menu_ypos);
1983
1984   /* Clamp the position on screen */
1985   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
1986
1987   if (menu_xpos < 0)
1988     menu_xpos = 0;
1989   else if ((menu_xpos + menu_width) > screen_width)
1990     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
1991
1992   *x = menu_xpos;
1993   *y = menu_ypos;
1994
1995   *push_in = TRUE;
1996 }
1997
1998 static void
1999 gtk_combo_box_menu_position (GtkMenu  *menu,
2000                              gint     *x,
2001                              gint     *y,
2002                              gint     *push_in,
2003                              gpointer  user_data)
2004 {
2005   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
2006   GtkComboBoxPrivate *priv = combo_box->priv;
2007   GtkWidget *menu_item;
2008
2009   if (priv->wrap_width > 0 || priv->cell_view == NULL)
2010     gtk_combo_box_menu_position_below (menu, x, y, push_in, user_data);
2011   else
2012     {
2013       /* FIXME handle nested menus better */
2014       menu_item = gtk_menu_get_active (GTK_MENU (priv->popup_widget));
2015       if (menu_item)
2016         gtk_menu_shell_select_item (GTK_MENU_SHELL (priv->popup_widget),
2017                                     menu_item);
2018
2019       gtk_combo_box_menu_position_over (menu, x, y, push_in, user_data);
2020     }
2021
2022   if (!gtk_widget_get_visible (GTK_MENU (priv->popup_widget)->priv->toplevel))
2023     gtk_window_set_type_hint (GTK_WINDOW (GTK_MENU (priv->popup_widget)->priv->toplevel),
2024                               GDK_WINDOW_TYPE_HINT_COMBO);
2025 }
2026
2027 static void
2028 gtk_combo_box_list_position (GtkComboBox *combo_box,
2029                              gint        *x,
2030                              gint        *y,
2031                              gint        *width,
2032                              gint        *height)
2033 {
2034   GtkComboBoxPrivate *priv = combo_box->priv;
2035   GtkAllocation allocation;
2036   GdkScreen *screen;
2037   gint monitor_num;
2038   GdkRectangle monitor;
2039   GtkRequisition popup_req;
2040   GtkPolicyType hpolicy, vpolicy;
2041   GdkWindow *window;
2042
2043   /* under windows, the drop down list is as wide as the combo box itself.
2044      see bug #340204 */
2045   GtkWidget *widget = GTK_WIDGET (combo_box);
2046
2047   *x = *y = 0;
2048
2049   gtk_widget_get_allocation (widget, &allocation);
2050
2051   if (!gtk_widget_get_has_window (widget))
2052     {
2053       *x += allocation.x;
2054       *y += allocation.y;
2055     }
2056
2057   window = gtk_widget_get_window (widget);
2058
2059   gdk_window_get_root_coords (gtk_widget_get_window (widget),
2060                               *x, *y, x, y);
2061
2062   *width = allocation.width;
2063
2064   hpolicy = vpolicy = GTK_POLICY_NEVER;
2065   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2066                                   hpolicy, vpolicy);
2067
2068   if (combo_box->priv->popup_fixed_width)
2069     {
2070       gtk_widget_get_preferred_size (priv->scrolled_window, &popup_req, NULL);
2071
2072       if (popup_req.width > *width)
2073         {
2074           hpolicy = GTK_POLICY_ALWAYS;
2075           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2076                                           hpolicy, vpolicy);
2077         }
2078     }
2079   else
2080     {
2081       /* XXX This code depends on treeviews properly reporting their natural width
2082        * list-mode menus won't fill up to their natural width until then */
2083       gtk_widget_get_preferred_size (priv->scrolled_window, NULL, &popup_req);
2084
2085       if (popup_req.width > *width)
2086         {
2087           hpolicy = GTK_POLICY_NEVER;
2088           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2089                                           hpolicy, vpolicy);
2090
2091           *width = popup_req.width;
2092         }
2093     }
2094
2095   *height = popup_req.height;
2096
2097   screen = gtk_widget_get_screen (GTK_WIDGET (combo_box));
2098   monitor_num = gdk_screen_get_monitor_at_window (screen, window);
2099   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
2100
2101   if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_RTL)
2102     *x = *x + allocation.width - *width;
2103
2104   if (*x < monitor.x)
2105     *x = monitor.x;
2106   else if (*x + *width > monitor.x + monitor.width)
2107     *x = monitor.x + monitor.width - *width;
2108
2109   if (*y + allocation.height + *height <= monitor.y + monitor.height)
2110     *y += allocation.height;
2111   else if (*y - *height >= monitor.y)
2112     *y -= *height;
2113   else if (monitor.y + monitor.height - (*y + allocation.height) > *y - monitor.y)
2114     {
2115       *y += allocation.height;
2116       *height = monitor.y + monitor.height - *y;
2117     }
2118   else
2119     {
2120       *height = *y - monitor.y;
2121       *y = monitor.y;
2122     }
2123
2124   if (popup_req.height > *height)
2125     {
2126       vpolicy = GTK_POLICY_ALWAYS;
2127
2128       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2129                                       hpolicy, vpolicy);
2130     }
2131 }
2132
2133 static gboolean
2134 cell_layout_is_sensitive (GtkCellLayout *layout)
2135 {
2136   GList *cells, *list;
2137   gboolean sensitive;
2138
2139   cells = gtk_cell_layout_get_cells (layout);
2140
2141   sensitive = FALSE;
2142   for (list = cells; list; list = list->next)
2143     {
2144       g_object_get (list->data, "sensitive", &sensitive, NULL);
2145
2146       if (sensitive)
2147         break;
2148     }
2149   g_list_free (cells);
2150
2151   return sensitive;
2152 }
2153
2154 static gboolean
2155 cell_is_sensitive (GtkCellRenderer *cell,
2156                    gpointer         data)
2157 {
2158   gboolean *sensitive = data;
2159
2160   g_object_get (cell, "sensitive", sensitive, NULL);
2161
2162   return *sensitive;
2163 }
2164
2165 static gboolean
2166 tree_column_row_is_sensitive (GtkComboBox *combo_box,
2167                               GtkTreeIter *iter)
2168 {
2169   GtkComboBoxPrivate *priv = combo_box->priv;
2170
2171   if (priv->row_separator_func)
2172     {
2173       if (priv->row_separator_func (priv->model, iter,
2174                                     priv->row_separator_data))
2175         return FALSE;
2176     }
2177
2178   if (priv->area)
2179     {
2180       gboolean sensitive;
2181
2182       gtk_cell_area_apply_attributes (priv->area, priv->model, iter, FALSE, FALSE);
2183
2184       sensitive = FALSE;
2185
2186       gtk_cell_area_foreach (priv->area, cell_is_sensitive, &sensitive);
2187
2188       return sensitive;
2189     }
2190
2191   return TRUE;
2192 }
2193
2194 static void
2195 update_menu_sensitivity (GtkComboBox *combo_box,
2196                          GtkWidget   *menu)
2197 {
2198   GtkComboBoxPrivate *priv = combo_box->priv;
2199   GList *children, *child;
2200   GtkWidget *item, *submenu, *separator;
2201   GtkWidget *cell_view;
2202   gboolean sensitive;
2203
2204   if (!priv->model)
2205     return;
2206
2207   children = gtk_container_get_children (GTK_CONTAINER (menu));
2208
2209   for (child = children; child; child = child->next)
2210     {
2211       item = GTK_WIDGET (child->data);
2212       cell_view = gtk_bin_get_child (GTK_BIN (item));
2213
2214       if (!GTK_IS_CELL_VIEW (cell_view))
2215         continue;
2216
2217       submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (item));
2218       if (submenu != NULL)
2219         {
2220           gtk_widget_set_sensitive (item, TRUE);
2221           update_menu_sensitivity (combo_box, submenu);
2222         }
2223       else
2224         {
2225           sensitive = cell_layout_is_sensitive (GTK_CELL_LAYOUT (cell_view));
2226
2227           if (menu != priv->popup_widget && child == children)
2228             {
2229               separator = GTK_WIDGET (child->next->data);
2230               g_object_set (item, "visible", sensitive, NULL);
2231               g_object_set (separator, "visible", sensitive, NULL);
2232             }
2233           else
2234             gtk_widget_set_sensitive (item, sensitive);
2235         }
2236     }
2237
2238   g_list_free (children);
2239 }
2240
2241 static void
2242 gtk_combo_box_menu_popup (GtkComboBox *combo_box,
2243                           guint        button,
2244                           guint32      activate_time)
2245 {
2246   GtkComboBoxPrivate *priv = combo_box->priv;
2247   GtkTreePath *path;
2248   gint active_item;
2249   gint width, min_width, nat_width;
2250
2251   update_menu_sensitivity (combo_box, priv->popup_widget);
2252
2253   active_item = -1;
2254   if (gtk_tree_row_reference_valid (priv->active_row))
2255     {
2256       path = gtk_tree_row_reference_get_path (priv->active_row);
2257       active_item = gtk_tree_path_get_indices (path)[0];
2258       gtk_tree_path_free (path);
2259
2260       if (priv->add_tearoffs)
2261         active_item++;
2262     }
2263
2264   /* FIXME handle nested menus better */
2265   gtk_menu_set_active (GTK_MENU (priv->popup_widget), active_item);
2266
2267   if (priv->wrap_width == 0)
2268     {
2269       GtkAllocation allocation;
2270
2271       gtk_widget_get_allocation (GTK_WIDGET (combo_box), &allocation);
2272       width = allocation.width;
2273       gtk_widget_set_size_request (priv->popup_widget, -1, -1);
2274       gtk_widget_get_preferred_width (priv->popup_widget, &min_width, &nat_width);
2275
2276       if (combo_box->priv->popup_fixed_width)
2277         width = MAX (width, min_width);
2278       else
2279         width = MAX (width, nat_width);
2280
2281       gtk_widget_set_size_request (priv->popup_widget, width, -1);
2282     }
2283
2284   gtk_menu_popup (GTK_MENU (priv->popup_widget),
2285                   NULL, NULL,
2286                   gtk_combo_box_menu_position, combo_box,
2287                   button, activate_time);
2288 }
2289
2290 static gboolean
2291 popup_grab_on_window (GdkWindow *window,
2292                       GdkDevice *keyboard,
2293                       GdkDevice *pointer,
2294                       guint32    activate_time)
2295 {
2296   if (keyboard &&
2297       gdk_device_grab (keyboard, window,
2298                        GDK_OWNERSHIP_WINDOW, TRUE,
2299                        GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
2300                        NULL, activate_time) != GDK_GRAB_SUCCESS)
2301     return FALSE;
2302
2303   if (pointer &&
2304       gdk_device_grab (pointer, window,
2305                        GDK_OWNERSHIP_WINDOW, TRUE,
2306                        GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
2307                        GDK_POINTER_MOTION_MASK,
2308                        NULL, activate_time) != GDK_GRAB_SUCCESS)
2309     {
2310       if (keyboard)
2311         gdk_device_ungrab (keyboard, activate_time);
2312
2313       return FALSE;
2314     }
2315
2316   return TRUE;
2317 }
2318
2319 /**
2320  * gtk_combo_box_popup:
2321  * @combo_box: a #GtkComboBox
2322  *
2323  * Pops up the menu or dropdown list of @combo_box.
2324  *
2325  * This function is mostly intended for use by accessibility technologies;
2326  * applications should have little use for it.
2327  *
2328  * Since: 2.4
2329  */
2330 void
2331 gtk_combo_box_popup (GtkComboBox *combo_box)
2332 {
2333   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2334
2335   g_signal_emit (combo_box, combo_box_signals[POPUP], 0);
2336 }
2337
2338 /**
2339  * gtk_combo_box_popup_for_device:
2340  * @combo_box: a #GtkComboBox
2341  * @device: a #GdkDevice
2342  *
2343  * Pops up the menu or dropdown list of @combo_box, the popup window
2344  * will be grabbed so only @device and its associated pointer/keyboard
2345  * are the only #GdkDevice<!-- -->s able to send events to it.
2346  *
2347  * Since: 3.0
2348  **/
2349 void
2350 gtk_combo_box_popup_for_device (GtkComboBox *combo_box,
2351                                 GdkDevice   *device)
2352 {
2353   GtkComboBoxPrivate *priv = combo_box->priv;
2354   gint x, y, width, height;
2355   GtkTreePath *path = NULL, *ppath;
2356   GtkWidget *toplevel;
2357   GdkDevice *keyboard, *pointer;
2358   guint32 time;
2359
2360   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2361   g_return_if_fail (GDK_IS_DEVICE (device));
2362
2363   if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
2364     return;
2365
2366   if (gtk_widget_get_mapped (priv->popup_widget))
2367     return;
2368
2369   if (priv->grab_pointer && priv->grab_keyboard)
2370     return;
2371
2372   time = gtk_get_current_event_time ();
2373
2374   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
2375     {
2376       keyboard = device;
2377       pointer = gdk_device_get_associated_device (device);
2378     }
2379   else
2380     {
2381       pointer = device;
2382       keyboard = gdk_device_get_associated_device (device);
2383     }
2384
2385   if (GTK_IS_MENU (priv->popup_widget))
2386     {
2387       gtk_combo_box_menu_popup (combo_box,
2388                                 priv->activate_button,
2389                                 priv->activate_time);
2390       return;
2391     }
2392
2393   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
2394   if (GTK_IS_WINDOW (toplevel))
2395     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
2396                                  GTK_WINDOW (priv->popup_window));
2397
2398   gtk_widget_show_all (priv->scrolled_window);
2399   gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
2400
2401   gtk_widget_set_size_request (priv->popup_window, width, height);
2402   gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
2403
2404   if (gtk_tree_row_reference_valid (priv->active_row))
2405     {
2406       path = gtk_tree_row_reference_get_path (priv->active_row);
2407       ppath = gtk_tree_path_copy (path);
2408       if (gtk_tree_path_up (ppath))
2409         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (priv->tree_view),
2410                                       ppath);
2411       gtk_tree_path_free (ppath);
2412     }
2413   gtk_tree_view_set_hover_expand (GTK_TREE_VIEW (priv->tree_view),
2414                                   TRUE);
2415
2416   /* popup */
2417   gtk_widget_show (priv->popup_window);
2418
2419   if (path)
2420     {
2421       gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
2422                                 path, NULL, FALSE);
2423       gtk_tree_path_free (path);
2424     }
2425
2426   gtk_widget_grab_focus (priv->popup_window);
2427   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
2428                                 TRUE);
2429
2430   if (!gtk_widget_has_focus (priv->tree_view))
2431     gtk_widget_grab_focus (priv->tree_view);
2432
2433   if (!popup_grab_on_window (gtk_widget_get_window (priv->popup_window),
2434                              keyboard, pointer, time))
2435     {
2436       gtk_widget_hide (priv->popup_window);
2437       return;
2438     }
2439
2440   gtk_device_grab_add (priv->popup_window, pointer, TRUE);
2441   priv->grab_pointer = pointer;
2442   priv->grab_keyboard = keyboard;
2443 }
2444
2445 static void
2446 gtk_combo_box_real_popup (GtkComboBox *combo_box)
2447 {
2448   GdkDevice *device;
2449
2450   device = gtk_get_current_event_device ();
2451
2452   if (!device)
2453     {
2454       GdkDeviceManager *device_manager;
2455       GdkDisplay *display;
2456       GList *devices;
2457
2458       display = gtk_widget_get_display (GTK_WIDGET (combo_box));
2459       device_manager = gdk_display_get_device_manager (display);
2460
2461       /* No device was set, pick the first master device */
2462       devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
2463       device = devices->data;
2464       g_list_free (devices);
2465     }
2466
2467   gtk_combo_box_popup_for_device (combo_box, device);
2468 }
2469
2470 static gboolean
2471 gtk_combo_box_real_popdown (GtkComboBox *combo_box)
2472 {
2473   if (combo_box->priv->popup_shown)
2474     {
2475       gtk_combo_box_popdown (combo_box);
2476       return TRUE;
2477     }
2478
2479   return FALSE;
2480 }
2481
2482 /**
2483  * gtk_combo_box_popdown:
2484  * @combo_box: a #GtkComboBox
2485  *
2486  * Hides the menu or dropdown list of @combo_box.
2487  *
2488  * This function is mostly intended for use by accessibility technologies;
2489  * applications should have little use for it.
2490  *
2491  * Since: 2.4
2492  */
2493 void
2494 gtk_combo_box_popdown (GtkComboBox *combo_box)
2495 {
2496   GtkComboBoxPrivate *priv = combo_box->priv;
2497
2498   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2499
2500   if (GTK_IS_MENU (priv->popup_widget))
2501     {
2502       gtk_menu_popdown (GTK_MENU (priv->popup_widget));
2503       return;
2504     }
2505
2506   if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
2507     return;
2508
2509   gtk_device_grab_remove (priv->popup_window, priv->grab_pointer);
2510   gtk_widget_hide (priv->popup_window);
2511   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
2512                                 FALSE);
2513
2514   priv->grab_pointer = NULL;
2515   priv->grab_keyboard = NULL;
2516 }
2517
2518 #define GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON                      \
2519   GtkAllocation button_allocation;                              \
2520   gtk_widget_get_preferred_size (combo_box->priv->button,       \
2521                                  &req, NULL);                   \
2522                                                                 \
2523   if (is_rtl)                                                   \
2524     button_allocation.x = allocation->x + padding.left;         \
2525   else                                                          \
2526     button_allocation.x = allocation->x + allocation->width     \
2527      - req.width - padding.right;                               \
2528                                                                 \
2529   button_allocation.y = allocation->y + padding.top;            \
2530   button_allocation.width = MAX (1, req.width);                 \
2531   button_allocation.height = allocation->height -               \
2532       (padding.top + padding.bottom);                           \
2533   button_allocation.height = MAX (1, button_allocation.height); \
2534                                                                 \
2535   gtk_widget_size_allocate (combo_box->priv->button,            \
2536                             &button_allocation);
2537
2538
2539 static void
2540 gtk_combo_box_size_allocate (GtkWidget     *widget,
2541                              GtkAllocation *allocation)
2542 {
2543   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
2544   GtkComboBoxPrivate *priv = combo_box->priv;
2545   GtkWidget *child_widget;
2546   GtkAllocation child;
2547   GtkRequisition req;
2548   gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
2549   GtkBorder padding;
2550
2551   gtk_widget_set_allocation (widget, allocation);
2552   child_widget = gtk_bin_get_child (GTK_BIN (widget));
2553   get_widget_padding_and_border (widget, &padding);
2554
2555   if (!priv->tree_view)
2556     {
2557       if (priv->cell_view)
2558         {
2559           GtkBorder button_padding;
2560           gint width;
2561           guint border_width;
2562
2563           border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->button));
2564           get_widget_padding_and_border (priv->button, &button_padding);
2565
2566           /* menu mode; child_widget is priv->cell_view.
2567            * Allocate the button to the full combobox allocation (minus the
2568            * padding).
2569            */
2570           allocation->x += padding.left;
2571           allocation->y += padding.top;
2572           allocation->width -= padding.left + padding.right;
2573           allocation->height -= padding.top + padding.bottom;
2574           gtk_widget_size_allocate (priv->button, allocation);
2575
2576           child.x = allocation->x;
2577           child.y = allocation->y;
2578           width = allocation->width;
2579           child.height = allocation->height;
2580
2581           if (!priv->is_cell_renderer)
2582             {
2583               /* restrict allocation of the child into the button box
2584                * if we're not in cell renderer mode.
2585                */
2586               child.x += border_width + button_padding.left;
2587               child.y += border_width + button_padding.top;
2588               width -= 2 * border_width +
2589                 button_padding.left + button_padding.right;
2590               child.height -= 2 * border_width +
2591                 button_padding.top + button_padding.bottom;
2592             }
2593
2594           /* allocate the box containing the separator and the arrow */
2595           gtk_widget_get_preferred_size (priv->box, &req, NULL);
2596           child.width = req.width;
2597           if (!is_rtl)
2598             child.x += width - req.width;
2599           child.width = MAX (1, child.width);
2600           child.height = MAX (1, child.height);
2601           gtk_widget_size_allocate (priv->box, &child);
2602
2603           if (is_rtl)
2604             {
2605               child.x += req.width;
2606               child.width = allocation->x + allocation->width
2607                 - border_width - child.x;
2608             }
2609           else
2610             {
2611               child.width = child.x;
2612               child.x = allocation->x
2613                 + border_width + button_padding.left;
2614               child.width -= child.x;
2615             }
2616
2617           if (gtk_widget_get_visible (priv->popup_widget))
2618             {
2619               gint width, menu_width;
2620
2621               if (priv->wrap_width == 0)
2622                 {
2623                   GtkAllocation combo_box_allocation;
2624
2625                   gtk_widget_get_allocation (GTK_WIDGET (combo_box), &combo_box_allocation);
2626                   width = combo_box_allocation.width;
2627                   gtk_widget_set_size_request (priv->popup_widget, -1, -1);
2628
2629                   if (combo_box->priv->popup_fixed_width)
2630                     gtk_widget_get_preferred_width (priv->popup_widget, &menu_width, NULL);
2631                   else
2632                     gtk_widget_get_preferred_width (priv->popup_widget, NULL, &menu_width);
2633
2634                   gtk_widget_set_size_request (priv->popup_widget,
2635                                                MAX (width, menu_width), -1);
2636                }
2637
2638               /* reposition the menu after giving it a new width */
2639               gtk_menu_reposition (GTK_MENU (priv->popup_widget));
2640             }
2641
2642           child.width = MAX (1, child.width);
2643           child.height = MAX (1, child.height);
2644           gtk_widget_size_allocate (child_widget, &child);
2645         }
2646       else
2647         {
2648           /* menu mode; child_widget has been set with gtk_container_add().
2649            * E.g. it might be a GtkEntry if priv->has_entry is TRUE.
2650            * Allocate the button at the far end, according to the direction
2651            * of the widget.
2652            */
2653           GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON
2654
2655             /* After the macro, button_allocation has the button allocation rect */
2656
2657           if (is_rtl)
2658             child.x = button_allocation.x + button_allocation.width;
2659           else
2660             child.x = allocation->x + padding.left;
2661
2662           child.y = allocation->y + padding.top;
2663           child.width = allocation->width - button_allocation.width - (padding.left + padding.right);
2664           child.height = button_allocation.height;
2665
2666           child.width = MAX (1, child.width);
2667
2668           gtk_widget_size_allocate (child_widget, &child);
2669         }
2670     }
2671   else
2672     {
2673       /* list mode; child_widget might be either priv->cell_view or a child
2674        * added with gtk_container_add().
2675        */
2676       guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
2677
2678       /* After the macro, button_allocation has the button allocation rect */
2679       GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON
2680
2681       if (is_rtl)
2682         child.x = button_allocation.x + button_allocation.width;
2683       else
2684         child.x = allocation->x;
2685
2686       child.y = allocation->y;
2687       child.width = allocation->width - button_allocation.width - (padding.left + padding.right);
2688       child.height = button_allocation.height;
2689
2690       if (priv->cell_view_frame)
2691         {
2692           child.x += padding.left + border_width;
2693           child.y += padding.top + border_width;
2694           child.width = MAX (1, child.width - (2 * border_width) - (padding.left + padding.right));
2695           child.height = MAX (1, child.height - (2 * border_width) - (padding.top + padding.bottom));
2696           gtk_widget_size_allocate (priv->cell_view_frame, &child);
2697
2698           /* restrict allocation of the child into the frame box if it's present */
2699           if (priv->has_frame)
2700             {
2701               GtkBorder frame_padding;
2702
2703               border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
2704               get_widget_padding_and_border (priv->cell_view_frame, &frame_padding);
2705
2706               child.x += border_width + frame_padding.left;
2707               child.y += border_width + frame_padding.right;
2708               child.width -= (2 * border_width) + frame_padding.left + frame_padding.right;
2709               child.height -= (2 * border_width) + frame_padding.top + frame_padding.bottom;
2710             }
2711         }
2712       else
2713         {
2714           child.x += padding.left + border_width;
2715           child.y += padding.top + border_width;
2716           child.width -= (2 * border_width) - (padding.left + padding.right);
2717           child.height -= (2 * border_width) - (padding.top + padding.bottom);
2718         }
2719
2720       if (gtk_widget_get_visible (priv->popup_window))
2721         {
2722           gint x, y, width, height;
2723           gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
2724           gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
2725           gtk_widget_set_size_request (priv->popup_window, width, height);
2726         }
2727
2728       /* allocate the child */
2729       child.width = MAX (1, child.width);
2730       child.height = MAX (1, child.height);
2731       gtk_widget_size_allocate (child_widget, &child);
2732     }
2733 }
2734
2735 #undef GTK_COMBO_BOX_ALLOCATE_BUTTON
2736
2737 static void
2738 gtk_combo_box_unset_model (GtkComboBox *combo_box)
2739 {
2740   GtkComboBoxPrivate *priv = combo_box->priv;
2741
2742   if (priv->model)
2743     {
2744       g_signal_handler_disconnect (priv->model,
2745                                    priv->inserted_id);
2746       g_signal_handler_disconnect (priv->model,
2747                                    priv->deleted_id);
2748       g_signal_handler_disconnect (priv->model,
2749                                    priv->reordered_id);
2750       g_signal_handler_disconnect (priv->model,
2751                                    priv->changed_id);
2752     }
2753
2754   if (priv->model)
2755     {
2756       g_object_unref (priv->model);
2757       priv->model = NULL;
2758     }
2759
2760   if (priv->active_row)
2761     {
2762       gtk_tree_row_reference_free (priv->active_row);
2763       priv->active_row = NULL;
2764     }
2765
2766   if (priv->cell_view)
2767     gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), NULL);
2768 }
2769
2770 static void
2771 gtk_combo_box_forall (GtkContainer *container,
2772                       gboolean      include_internals,
2773                       GtkCallback   callback,
2774                       gpointer      callback_data)
2775 {
2776   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
2777   GtkComboBoxPrivate *priv = combo_box->priv;
2778   GtkWidget *child;
2779
2780   if (include_internals)
2781     {
2782       if (priv->button)
2783         (* callback) (priv->button, callback_data);
2784       if (priv->cell_view_frame)
2785         (* callback) (priv->cell_view_frame, callback_data);
2786     }
2787
2788   child = gtk_bin_get_child (GTK_BIN (container));
2789   if (child)
2790     (* callback) (child, callback_data);
2791 }
2792
2793 static void
2794 gtk_combo_box_child_show (GtkWidget *widget,
2795                           GtkComboBox *combo_box)
2796 {
2797   GtkComboBoxPrivate *priv = combo_box->priv;
2798
2799   priv->popup_shown = TRUE;
2800   g_object_notify (G_OBJECT (combo_box), "popup-shown");
2801 }
2802
2803 static void
2804 gtk_combo_box_child_hide (GtkWidget *widget,
2805                           GtkComboBox *combo_box)
2806 {
2807   GtkComboBoxPrivate *priv = combo_box->priv;
2808
2809   priv->popup_shown = FALSE;
2810   g_object_notify (G_OBJECT (combo_box), "popup-shown");
2811 }
2812
2813 static gboolean
2814 gtk_combo_box_draw (GtkWidget *widget,
2815                     cairo_t   *cr)
2816 {
2817   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
2818   GtkComboBoxPrivate *priv = combo_box->priv;
2819
2820   if (priv->shadow_type != GTK_SHADOW_NONE)
2821     {
2822       GtkStyleContext *context;
2823
2824       context = gtk_widget_get_style_context (widget);
2825
2826       gtk_render_background (context, cr, 0, 0,
2827                              gtk_widget_get_allocated_width (widget),
2828                              gtk_widget_get_allocated_height (widget));
2829       gtk_render_frame (context, cr, 0, 0,
2830                         gtk_widget_get_allocated_width (widget),
2831                         gtk_widget_get_allocated_height (widget));
2832     }
2833
2834   gtk_container_propagate_draw (GTK_CONTAINER (widget),
2835                                 priv->button, cr);
2836
2837   if (priv->tree_view && priv->cell_view_frame)
2838     {
2839       gtk_container_propagate_draw (GTK_CONTAINER (widget),
2840                                     priv->cell_view_frame, cr);
2841     }
2842
2843   gtk_container_propagate_draw (GTK_CONTAINER (widget),
2844                                 gtk_bin_get_child (GTK_BIN (widget)),
2845                                 cr);
2846
2847   return FALSE;
2848 }
2849
2850 typedef struct {
2851   GtkComboBox *combo;
2852   GtkTreePath *path;
2853   GtkTreeIter iter;
2854   gboolean found;
2855   gboolean set;
2856   gboolean visible;
2857 } SearchData;
2858
2859 static gboolean
2860 path_visible (GtkTreeView *view,
2861               GtkTreePath *path)
2862 {
2863   GtkRBTree *tree;
2864   GtkRBNode *node;
2865
2866   /* Note that we rely on the fact that collapsed rows don't have nodes
2867    */
2868   return _gtk_tree_view_find_node (view, path, &tree, &node);
2869 }
2870
2871 static gboolean
2872 tree_next_func (GtkTreeModel *model,
2873                 GtkTreePath  *path,
2874                 GtkTreeIter  *iter,
2875                 gpointer      data)
2876 {
2877   SearchData *search_data = (SearchData *)data;
2878
2879   if (search_data->found)
2880     {
2881       if (!tree_column_row_is_sensitive (search_data->combo, iter))
2882         return FALSE;
2883
2884       if (search_data->visible &&
2885           !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2886         return FALSE;
2887
2888       search_data->set = TRUE;
2889       search_data->iter = *iter;
2890
2891       return TRUE;
2892     }
2893
2894   if (gtk_tree_path_compare (path, search_data->path) == 0)
2895     search_data->found = TRUE;
2896
2897   return FALSE;
2898 }
2899
2900 static gboolean
2901 tree_next (GtkComboBox  *combo,
2902            GtkTreeModel *model,
2903            GtkTreeIter  *iter,
2904            GtkTreeIter  *next,
2905            gboolean      visible)
2906 {
2907   SearchData search_data;
2908
2909   search_data.combo = combo;
2910   search_data.path = gtk_tree_model_get_path (model, iter);
2911   search_data.visible = visible;
2912   search_data.found = FALSE;
2913   search_data.set = FALSE;
2914
2915   gtk_tree_model_foreach (model, tree_next_func, &search_data);
2916
2917   *next = search_data.iter;
2918
2919   gtk_tree_path_free (search_data.path);
2920
2921   return search_data.set;
2922 }
2923
2924 static gboolean
2925 tree_prev_func (GtkTreeModel *model,
2926                 GtkTreePath  *path,
2927                 GtkTreeIter  *iter,
2928                 gpointer      data)
2929 {
2930   SearchData *search_data = (SearchData *)data;
2931
2932   if (gtk_tree_path_compare (path, search_data->path) == 0)
2933     {
2934       search_data->found = TRUE;
2935       return TRUE;
2936     }
2937
2938   if (!tree_column_row_is_sensitive (search_data->combo, iter))
2939     return FALSE;
2940
2941   if (search_data->visible &&
2942       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2943     return FALSE;
2944
2945   search_data->set = TRUE;
2946   search_data->iter = *iter;
2947
2948   return FALSE;
2949 }
2950
2951 static gboolean
2952 tree_prev (GtkComboBox  *combo,
2953            GtkTreeModel *model,
2954            GtkTreeIter  *iter,
2955            GtkTreeIter  *prev,
2956            gboolean      visible)
2957 {
2958   SearchData search_data;
2959
2960   search_data.combo = combo;
2961   search_data.path = gtk_tree_model_get_path (model, iter);
2962   search_data.visible = visible;
2963   search_data.found = FALSE;
2964   search_data.set = FALSE;
2965
2966   gtk_tree_model_foreach (model, tree_prev_func, &search_data);
2967
2968   *prev = search_data.iter;
2969
2970   gtk_tree_path_free (search_data.path);
2971
2972   return search_data.set;
2973 }
2974
2975 static gboolean
2976 tree_last_func (GtkTreeModel *model,
2977                 GtkTreePath  *path,
2978                 GtkTreeIter  *iter,
2979                 gpointer      data)
2980 {
2981   SearchData *search_data = (SearchData *)data;
2982
2983   if (!tree_column_row_is_sensitive (search_data->combo, iter))
2984     return FALSE;
2985
2986   /* Note that we rely on the fact that collapsed rows don't have nodes
2987    */
2988   if (search_data->visible &&
2989       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2990     return FALSE;
2991
2992   search_data->set = TRUE;
2993   search_data->iter = *iter;
2994
2995   return FALSE;
2996 }
2997
2998 static gboolean
2999 tree_last (GtkComboBox  *combo,
3000            GtkTreeModel *model,
3001            GtkTreeIter  *last,
3002            gboolean      visible)
3003 {
3004   SearchData search_data;
3005
3006   search_data.combo = combo;
3007   search_data.visible = visible;
3008   search_data.set = FALSE;
3009
3010   gtk_tree_model_foreach (model, tree_last_func, &search_data);
3011
3012   *last = search_data.iter;
3013
3014   return search_data.set;
3015 }
3016
3017
3018 static gboolean
3019 tree_first_func (GtkTreeModel *model,
3020                  GtkTreePath  *path,
3021                  GtkTreeIter  *iter,
3022                  gpointer      data)
3023 {
3024   SearchData *search_data = (SearchData *)data;
3025
3026   if (!tree_column_row_is_sensitive (search_data->combo, iter))
3027     return FALSE;
3028
3029   if (search_data->visible &&
3030       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
3031     return FALSE;
3032
3033   search_data->set = TRUE;
3034   search_data->iter = *iter;
3035
3036   return TRUE;
3037 }
3038
3039 static gboolean
3040 tree_first (GtkComboBox  *combo,
3041             GtkTreeModel *model,
3042             GtkTreeIter  *first,
3043             gboolean      visible)
3044 {
3045   SearchData search_data;
3046
3047   search_data.combo = combo;
3048   search_data.visible = visible;
3049   search_data.set = FALSE;
3050
3051   gtk_tree_model_foreach (model, tree_first_func, &search_data);
3052
3053   *first = search_data.iter;
3054
3055   return search_data.set;
3056 }
3057
3058 static gboolean
3059 gtk_combo_box_scroll_event (GtkWidget          *widget,
3060                             GdkEventScroll     *event)
3061 {
3062   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
3063   gboolean found;
3064   GtkTreeIter iter;
3065   GtkTreeIter new_iter;
3066
3067   if (!gtk_combo_box_get_active_iter (combo_box, &iter))
3068     return TRUE;
3069
3070   if (event->direction == GDK_SCROLL_UP)
3071     found = tree_prev (combo_box, combo_box->priv->model,
3072                        &iter, &new_iter, FALSE);
3073   else
3074     found = tree_next (combo_box, combo_box->priv->model,
3075                        &iter, &new_iter, FALSE);
3076
3077   if (found)
3078     gtk_combo_box_set_active_iter (combo_box, &new_iter);
3079
3080   return TRUE;
3081 }
3082
3083 /*
3084  * menu style
3085  */
3086 static gboolean
3087 gtk_combo_box_row_separator_func (GtkTreeModel      *model,
3088                                   GtkTreeIter       *iter,
3089                                   GtkComboBox       *combo)
3090 {
3091   GtkComboBoxPrivate *priv = combo->priv;
3092
3093   if (priv->row_separator_func)
3094     return priv->row_separator_func (model, iter, priv->row_separator_data);
3095
3096   return FALSE;
3097 }
3098
3099 static gboolean
3100 gtk_combo_box_header_func (GtkTreeModel      *model,
3101                            GtkTreeIter       *iter,
3102                            GtkComboBox       *combo)
3103 {
3104   /* Every submenu has a selectable header, however we
3105    * can expose a method to make that configurable by
3106    * the user (like row_separator_func is done) */
3107   return TRUE;
3108 }
3109
3110 static void
3111 gtk_combo_box_menu_setup (GtkComboBox *combo_box,
3112                           gboolean     add_children)
3113 {
3114   GtkComboBoxPrivate *priv = combo_box->priv;
3115   GtkWidget *child;
3116   GtkWidget *menu;
3117
3118   child = gtk_bin_get_child (GTK_BIN (combo_box));
3119
3120   if (priv->cell_view)
3121     {
3122       priv->button = gtk_toggle_button_new ();
3123       gtk_button_set_focus_on_click (GTK_BUTTON (priv->button),
3124                                      priv->focus_on_click);
3125
3126       g_signal_connect (priv->button, "toggled",
3127                         G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3128       gtk_widget_set_parent (priv->button,
3129                              gtk_widget_get_parent (child));
3130
3131       priv->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
3132       gtk_container_add (GTK_CONTAINER (priv->button), priv->box);
3133
3134       priv->separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
3135       gtk_container_add (GTK_CONTAINER (priv->box), priv->separator);
3136
3137       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3138       gtk_container_add (GTK_CONTAINER (priv->box), priv->arrow);
3139
3140       gtk_widget_show_all (priv->button);
3141     }
3142   else
3143     {
3144       priv->button = gtk_toggle_button_new ();
3145       gtk_button_set_focus_on_click (GTK_BUTTON (priv->button),
3146                                      priv->focus_on_click);
3147
3148       g_signal_connect (priv->button, "toggled",
3149                         G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3150       gtk_widget_set_parent (priv->button,
3151                              gtk_widget_get_parent (child));
3152
3153       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3154       gtk_container_add (GTK_CONTAINER (priv->button), priv->arrow);
3155       gtk_widget_show_all (priv->button);
3156     }
3157
3158   g_signal_connect (priv->button, "button-press-event",
3159                     G_CALLBACK (gtk_combo_box_menu_button_press),
3160                     combo_box);
3161   g_signal_connect (priv->button, "state-flags-changed",
3162                     G_CALLBACK (gtk_combo_box_button_state_flags_changed),
3163                     combo_box);
3164
3165   /* create our funky menu */
3166   menu = _gtk_tree_menu_new_with_area (priv->area);
3167   gtk_widget_set_name (menu, "gtk-combobox-popup-menu");
3168
3169   _gtk_tree_menu_set_model (GTK_TREE_MENU (menu), priv->model);
3170
3171   _gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (menu), priv->wrap_width);
3172   _gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (menu), priv->row_column);
3173   _gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (menu), priv->col_column);
3174   _gtk_tree_menu_set_tearoff (GTK_TREE_MENU (menu),
3175                               combo_box->priv->add_tearoffs);
3176
3177   g_signal_connect (menu, "menu-activate",
3178                     G_CALLBACK (gtk_combo_box_menu_activate), combo_box);
3179
3180   /* Chain our row_separator_func through */
3181   _gtk_tree_menu_set_row_separator_func (GTK_TREE_MENU (menu),
3182                                          (GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
3183                                          combo_box, NULL);
3184
3185   _gtk_tree_menu_set_header_func (GTK_TREE_MENU (menu),
3186                                   (GtkTreeMenuHeaderFunc)gtk_combo_box_header_func,
3187                                   combo_box, NULL);
3188
3189   g_signal_connect (menu, "key-press-event",
3190                     G_CALLBACK (gtk_combo_box_menu_key_press), combo_box);
3191   gtk_combo_box_set_popup_widget (combo_box, menu);
3192
3193   gtk_combo_box_update_title (combo_box);
3194 }
3195
3196 static void
3197 gtk_combo_box_menu_destroy (GtkComboBox *combo_box)
3198 {
3199   GtkComboBoxPrivate *priv = combo_box->priv;
3200
3201   g_signal_handlers_disconnect_matched (priv->button,
3202                                         G_SIGNAL_MATCH_DATA,
3203                                         0, 0, NULL,
3204                                         gtk_combo_box_menu_button_press, NULL);
3205   g_signal_handlers_disconnect_matched (priv->button,
3206                                         G_SIGNAL_MATCH_DATA,
3207                                         0, 0, NULL,
3208                                         gtk_combo_box_button_state_flags_changed, combo_box);
3209   g_signal_handlers_disconnect_matched (priv->popup_widget,
3210                                         G_SIGNAL_MATCH_DATA,
3211                                         0, 0, NULL,
3212                                         gtk_combo_box_menu_activate, combo_box);
3213
3214   /* unparent will remove our latest ref */
3215   gtk_widget_unparent (priv->button);
3216
3217   priv->box = NULL;
3218   priv->button = NULL;
3219   priv->arrow = NULL;
3220   priv->separator = NULL;
3221
3222   /* changing the popup window will unref the menu and the children */
3223 }
3224
3225 /* callbacks */
3226 static gboolean
3227 gtk_combo_box_menu_button_press (GtkWidget      *widget,
3228                                  GdkEventButton *event,
3229                                  gpointer        user_data)
3230 {
3231   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3232   GtkComboBoxPrivate *priv = combo_box->priv;
3233
3234   if (GTK_IS_MENU (priv->popup_widget) &&
3235       event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY)
3236     {
3237       if (priv->focus_on_click &&
3238           !gtk_widget_has_focus (priv->button))
3239         gtk_widget_grab_focus (priv->button);
3240
3241       gtk_combo_box_menu_popup (combo_box, event->button, event->time);
3242
3243       return TRUE;
3244     }
3245
3246   return FALSE;
3247 }
3248
3249 static void
3250 gtk_combo_box_menu_activate (GtkWidget   *menu,
3251                              const gchar *path,
3252                              GtkComboBox *combo_box)
3253 {
3254   GtkTreeIter iter;
3255
3256   if (gtk_tree_model_get_iter_from_string (combo_box->priv->model, &iter, path))
3257     gtk_combo_box_set_active_iter (combo_box, &iter);
3258
3259   g_object_set (combo_box,
3260                 "editing-canceled", FALSE,
3261                 NULL);
3262 }
3263
3264
3265 static void
3266 gtk_combo_box_update_sensitivity (GtkComboBox *combo_box)
3267 {
3268   GtkTreeIter iter;
3269   gboolean sensitive = TRUE; /* fool code checkers */
3270
3271   if (!combo_box->priv->button)
3272     return;
3273
3274   switch (combo_box->priv->button_sensitivity)
3275     {
3276       case GTK_SENSITIVITY_ON:
3277         sensitive = TRUE;
3278         break;
3279       case GTK_SENSITIVITY_OFF:
3280         sensitive = FALSE;
3281         break;
3282       case GTK_SENSITIVITY_AUTO:
3283         sensitive = combo_box->priv->model &&
3284                     gtk_tree_model_get_iter_first (combo_box->priv->model, &iter);
3285         break;
3286       default:
3287         g_assert_not_reached ();
3288         break;
3289     }
3290
3291   gtk_widget_set_sensitive (combo_box->priv->button, sensitive);
3292
3293   /* In list-mode, we also need to update sensitivity of the event box */
3294   if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view)
3295       && combo_box->priv->cell_view)
3296     gtk_widget_set_sensitive (combo_box->priv->box, sensitive);
3297 }
3298
3299 static void
3300 gtk_combo_box_model_row_inserted (GtkTreeModel     *model,
3301                                   GtkTreePath      *path,
3302                                   GtkTreeIter      *iter,
3303                                   gpointer          user_data)
3304 {
3305   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3306
3307   if (combo_box->priv->tree_view)
3308     gtk_combo_box_list_popup_resize (combo_box);
3309
3310   gtk_combo_box_update_sensitivity (combo_box);
3311 }
3312
3313 static void
3314 gtk_combo_box_model_row_deleted (GtkTreeModel     *model,
3315                                  GtkTreePath      *path,
3316                                  gpointer          user_data)
3317 {
3318   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3319   GtkComboBoxPrivate *priv = combo_box->priv;
3320
3321   if (!gtk_tree_row_reference_valid (priv->active_row))
3322     {
3323       if (priv->cell_view)
3324         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
3325       g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
3326     }
3327
3328   if (priv->tree_view)
3329     gtk_combo_box_list_popup_resize (combo_box);
3330
3331   gtk_combo_box_update_sensitivity (combo_box);
3332 }
3333
3334 static void
3335 gtk_combo_box_model_rows_reordered (GtkTreeModel    *model,
3336                                     GtkTreePath     *path,
3337                                     GtkTreeIter     *iter,
3338                                     gint            *new_order,
3339                                     gpointer         user_data)
3340 {
3341   gtk_tree_row_reference_reordered (G_OBJECT (user_data), path, iter, new_order);
3342 }
3343
3344 static void
3345 gtk_combo_box_model_row_changed (GtkTreeModel     *model,
3346                                  GtkTreePath      *path,
3347                                  GtkTreeIter      *iter,
3348                                  gpointer          user_data)
3349 {
3350   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3351   GtkComboBoxPrivate *priv = combo_box->priv;
3352   GtkTreePath *active_path;
3353
3354   /* FIXME this belongs to GtkCellView */
3355   if (gtk_tree_row_reference_valid (priv->active_row))
3356     {
3357       active_path = gtk_tree_row_reference_get_path (priv->active_row);
3358       if (gtk_tree_path_compare (path, active_path) == 0 &&
3359           priv->cell_view)
3360         gtk_widget_queue_resize (GTK_WIDGET (priv->cell_view));
3361       gtk_tree_path_free (active_path);
3362     }
3363
3364   if (priv->tree_view)
3365     gtk_combo_box_list_row_changed (model, path, iter, user_data);
3366 }
3367
3368 static gboolean
3369 list_popup_resize_idle (gpointer user_data)
3370 {
3371   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3372   GtkComboBoxPrivate *priv = combo_box->priv;
3373   gint x, y, width, height;
3374
3375   if (priv->tree_view && gtk_widget_get_mapped (priv->popup_window))
3376     {
3377       gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
3378
3379       gtk_widget_set_size_request (priv->popup_window, width, height);
3380       gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
3381     }
3382
3383   priv->resize_idle_id = 0;
3384
3385   return FALSE;
3386 }
3387
3388 static void
3389 gtk_combo_box_list_popup_resize (GtkComboBox *combo_box)
3390 {
3391   GtkComboBoxPrivate *priv = combo_box->priv;
3392
3393   if (!priv->resize_idle_id)
3394     priv->resize_idle_id =
3395       gdk_threads_add_idle (list_popup_resize_idle, combo_box);
3396 }
3397
3398 static void
3399 gtk_combo_box_model_row_expanded (GtkTreeModel     *model,
3400                                   GtkTreePath      *path,
3401                                   GtkTreeIter      *iter,
3402                                   gpointer          user_data)
3403 {
3404   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3405
3406   gtk_combo_box_list_popup_resize (combo_box);
3407 }
3408
3409
3410 /*
3411  * list style
3412  */
3413
3414 static void
3415 gtk_combo_box_list_setup (GtkComboBox *combo_box)
3416 {
3417   GtkComboBoxPrivate *priv = combo_box->priv;
3418   GtkTreeSelection *sel;
3419   GtkWidget *child;
3420   GtkWidget *widget = GTK_WIDGET (combo_box);
3421
3422   priv->button = gtk_toggle_button_new ();
3423   child = gtk_bin_get_child (GTK_BIN (combo_box));
3424   gtk_widget_set_parent (priv->button,
3425                          gtk_widget_get_parent (child));
3426   g_signal_connect (priv->button, "button-press-event",
3427                     G_CALLBACK (gtk_combo_box_list_button_pressed), combo_box);
3428   g_signal_connect (priv->button, "toggled",
3429                     G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3430
3431   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3432   gtk_container_add (GTK_CONTAINER (priv->button), priv->arrow);
3433   priv->separator = NULL;
3434   gtk_widget_show_all (priv->button);
3435
3436   if (priv->cell_view)
3437     {
3438       GtkStyleContext *context;
3439       GtkStateFlags state;
3440       GdkRGBA color;
3441
3442       context  = gtk_widget_get_style_context (widget);
3443       state = gtk_widget_get_state_flags (widget);
3444       gtk_style_context_get_background_color (context, state, &color);
3445
3446       gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
3447
3448       priv->box = gtk_event_box_new ();
3449       gtk_event_box_set_visible_window (GTK_EVENT_BOX (priv->box),
3450                                         FALSE);
3451
3452       if (priv->has_frame)
3453         {
3454           priv->cell_view_frame = gtk_frame_new (NULL);
3455           gtk_frame_set_shadow_type (GTK_FRAME (priv->cell_view_frame),
3456                                      GTK_SHADOW_IN);
3457         }
3458       else
3459         {
3460           combo_box->priv->cell_view_frame = gtk_event_box_new ();
3461           gtk_event_box_set_visible_window (GTK_EVENT_BOX (combo_box->priv->cell_view_frame),
3462                                             FALSE);
3463         }
3464
3465       gtk_widget_set_parent (priv->cell_view_frame,
3466                              gtk_widget_get_parent (child));
3467       gtk_container_add (GTK_CONTAINER (priv->cell_view_frame), priv->box);
3468       gtk_widget_show_all (priv->cell_view_frame);
3469
3470       g_signal_connect (priv->box, "button-press-event",
3471                         G_CALLBACK (gtk_combo_box_list_button_pressed),
3472                         combo_box);
3473     }
3474
3475   priv->tree_view = gtk_tree_view_new ();
3476   sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
3477   gtk_tree_selection_set_mode (sel, GTK_SELECTION_BROWSE);
3478   gtk_tree_selection_set_select_function (sel,
3479                                           gtk_combo_box_list_select_func,
3480                                           NULL, NULL);
3481   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view),
3482                                      FALSE);
3483   gtk_tree_view_set_hover_selection (GTK_TREE_VIEW (priv->tree_view),
3484                                      TRUE);
3485
3486   gtk_tree_view_set_row_separator_func (GTK_TREE_VIEW (priv->tree_view),
3487                                         (GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
3488                                         combo_box, NULL);
3489
3490   if (priv->model)
3491     gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), priv->model);
3492
3493   gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view),
3494                                gtk_tree_view_column_new_with_area (priv->area));
3495
3496   if (gtk_tree_row_reference_valid (priv->active_row))
3497     {
3498       GtkTreePath *path;
3499
3500       path = gtk_tree_row_reference_get_path (priv->active_row);
3501       gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
3502                                 path, NULL, FALSE);
3503       gtk_tree_path_free (path);
3504     }
3505
3506   /* set sample/popup widgets */
3507   gtk_combo_box_set_popup_widget (combo_box, priv->tree_view);
3508
3509   g_signal_connect (priv->tree_view, "key-press-event",
3510                     G_CALLBACK (gtk_combo_box_list_key_press),
3511                     combo_box);
3512   g_signal_connect (priv->tree_view, "enter-notify-event",
3513                     G_CALLBACK (gtk_combo_box_list_enter_notify),
3514                     combo_box);
3515   g_signal_connect (priv->tree_view, "row-expanded",
3516                     G_CALLBACK (gtk_combo_box_model_row_expanded),
3517                     combo_box);
3518   g_signal_connect (priv->tree_view, "row-collapsed",
3519                     G_CALLBACK (gtk_combo_box_model_row_expanded),
3520                     combo_box);
3521   g_signal_connect (priv->popup_window, "button-press-event",
3522                     G_CALLBACK (gtk_combo_box_list_button_pressed),
3523                     combo_box);
3524   g_signal_connect (priv->popup_window, "button-release-event",
3525                     G_CALLBACK (gtk_combo_box_list_button_released),
3526                     combo_box);
3527
3528   gtk_widget_show (priv->tree_view);
3529
3530   gtk_combo_box_update_sensitivity (combo_box);
3531 }
3532
3533 static void
3534 gtk_combo_box_list_destroy (GtkComboBox *combo_box)
3535 {
3536   GtkComboBoxPrivate *priv = combo_box->priv;
3537
3538   /* disconnect signals */
3539   g_signal_handlers_disconnect_matched (priv->tree_view,
3540                                         G_SIGNAL_MATCH_DATA,
3541                                         0, 0, NULL, NULL, combo_box);
3542   g_signal_handlers_disconnect_matched (priv->button,
3543                                         G_SIGNAL_MATCH_DATA,
3544                                         0, 0, NULL,
3545                                         gtk_combo_box_list_button_pressed,
3546                                         NULL);
3547   g_signal_handlers_disconnect_matched (priv->popup_window,
3548                                         G_SIGNAL_MATCH_DATA,
3549                                         0, 0, NULL,
3550                                         gtk_combo_box_list_button_pressed,
3551                                         NULL);
3552   g_signal_handlers_disconnect_matched (priv->popup_window,
3553                                         G_SIGNAL_MATCH_DATA,
3554                                         0, 0, NULL,
3555                                         gtk_combo_box_list_button_released,
3556                                         NULL);
3557
3558   g_signal_handlers_disconnect_matched (priv->popup_window,
3559                                         G_SIGNAL_MATCH_DATA,
3560                                         0, 0, NULL,
3561                                         gtk_combo_box_child_show,
3562                                         NULL);
3563
3564   g_signal_handlers_disconnect_matched (priv->popup_window,
3565                                         G_SIGNAL_MATCH_DATA,
3566                                         0, 0, NULL,
3567                                         gtk_combo_box_child_hide,
3568                                         NULL);
3569
3570   if (priv->box)
3571     g_signal_handlers_disconnect_matched (priv->box,
3572                                           G_SIGNAL_MATCH_DATA,
3573                                           0, 0, NULL,
3574                                           gtk_combo_box_list_button_pressed,
3575                                           NULL);
3576
3577   /* destroy things (unparent will kill the latest ref from us)
3578    * last unref on button will destroy the arrow
3579    */
3580   gtk_widget_unparent (priv->button);
3581   priv->button = NULL;
3582   priv->arrow = NULL;
3583
3584   if (priv->cell_view)
3585     {
3586       g_object_set (priv->cell_view,
3587                     "background-set", FALSE,
3588                     NULL);
3589     }
3590
3591   if (priv->cell_view_frame)
3592     {
3593       gtk_widget_unparent (priv->cell_view_frame);
3594       priv->cell_view_frame = NULL;
3595       priv->box = NULL;
3596     }
3597
3598   if (priv->scroll_timer)
3599     {
3600       g_source_remove (priv->scroll_timer);
3601       priv->scroll_timer = 0;
3602     }
3603
3604   if (priv->resize_idle_id)
3605     {
3606       g_source_remove (priv->resize_idle_id);
3607       priv->resize_idle_id = 0;
3608     }
3609
3610   gtk_widget_destroy (priv->tree_view);
3611
3612   priv->tree_view = NULL;
3613   if (priv->popup_widget)
3614     {
3615       g_object_unref (priv->popup_widget);
3616       priv->popup_widget = NULL;
3617     }
3618 }
3619
3620 /* callbacks */
3621
3622 static gboolean
3623 gtk_combo_box_list_button_pressed (GtkWidget      *widget,
3624                                    GdkEventButton *event,
3625                                    gpointer        data)
3626 {
3627   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3628   GtkComboBoxPrivate *priv = combo_box->priv;
3629
3630   GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
3631
3632   if (ewidget == priv->popup_window)
3633     return TRUE;
3634
3635   if ((ewidget != priv->button && ewidget != priv->box) ||
3636       gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)))
3637     return FALSE;
3638
3639   if (priv->focus_on_click &&
3640       !gtk_widget_has_focus (priv->button))
3641     gtk_widget_grab_focus (priv->button);
3642
3643   gtk_combo_box_popup_for_device (combo_box, event->device);
3644
3645   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), TRUE);
3646
3647   priv->auto_scroll = FALSE;
3648   if (priv->scroll_timer == 0)
3649     priv->scroll_timer = gdk_threads_add_timeout (SCROLL_TIME,
3650                                                   (GSourceFunc) gtk_combo_box_list_scroll_timeout,
3651                                                    combo_box);
3652
3653   priv->popup_in_progress = TRUE;
3654
3655   return TRUE;
3656 }
3657
3658 static gboolean
3659 gtk_combo_box_list_button_released (GtkWidget      *widget,
3660                                     GdkEventButton *event,
3661                                     gpointer        data)
3662 {
3663   gboolean ret;
3664   GtkTreePath *path = NULL;
3665   GtkTreeIter iter;
3666
3667   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3668   GtkComboBoxPrivate *priv = combo_box->priv;
3669
3670   gboolean popup_in_progress = FALSE;
3671
3672   GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
3673
3674   if (priv->popup_in_progress)
3675     {
3676       popup_in_progress = TRUE;
3677       priv->popup_in_progress = FALSE;
3678     }
3679
3680   gtk_tree_view_set_hover_expand (GTK_TREE_VIEW (priv->tree_view),
3681                                   FALSE);
3682   if (priv->scroll_timer)
3683     {
3684       g_source_remove (priv->scroll_timer);
3685       priv->scroll_timer = 0;
3686     }
3687
3688   if (ewidget != priv->tree_view)
3689     {
3690       if ((ewidget == priv->button ||
3691            ewidget == priv->box) &&
3692           !popup_in_progress &&
3693           gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)))
3694         {
3695           gtk_combo_box_popdown (combo_box);
3696           return TRUE;
3697         }
3698
3699       /* released outside treeview */
3700       if (ewidget != priv->button && ewidget != priv->box)
3701         {
3702           gtk_combo_box_popdown (combo_box);
3703
3704           return TRUE;
3705         }
3706
3707       return FALSE;
3708     }
3709
3710   /* select something cool */
3711   ret = gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
3712                                        event->x, event->y,
3713                                        &path,
3714                                        NULL, NULL, NULL);
3715
3716   if (!ret)
3717     return TRUE; /* clicked outside window? */
3718
3719   gtk_tree_model_get_iter (priv->model, &iter, path);
3720   gtk_tree_path_free (path);
3721
3722   gtk_combo_box_popdown (combo_box);
3723
3724   if (tree_column_row_is_sensitive (combo_box, &iter))
3725     gtk_combo_box_set_active_iter (combo_box, &iter);
3726
3727   return TRUE;
3728 }
3729
3730 static gboolean
3731 gtk_combo_box_menu_key_press (GtkWidget   *widget,
3732                               GdkEventKey *event,
3733                               gpointer     data)
3734 {
3735   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3736
3737   if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
3738     {
3739       /* The menu hasn't managed the
3740        * event, forward it to the combobox
3741        */
3742       gtk_bindings_activate_event (G_OBJECT (combo_box), event);
3743     }
3744
3745   return TRUE;
3746 }
3747
3748 static gboolean
3749 gtk_combo_box_list_key_press (GtkWidget   *widget,
3750                               GdkEventKey *event,
3751                               gpointer     data)
3752 {
3753   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3754   GtkTreeIter iter;
3755
3756   if (event->keyval == GDK_KEY_Return || event->keyval == GDK_KEY_ISO_Enter || event->keyval == GDK_KEY_KP_Enter ||
3757       event->keyval == GDK_KEY_space || event->keyval == GDK_KEY_KP_Space)
3758   {
3759     GtkTreeModel *model = NULL;
3760
3761     gtk_combo_box_popdown (combo_box);
3762
3763     if (combo_box->priv->model)
3764       {
3765         GtkTreeSelection *sel;
3766
3767         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view));
3768
3769         if (gtk_tree_selection_get_selected (sel, &model, &iter))
3770           gtk_combo_box_set_active_iter (combo_box, &iter);
3771       }
3772
3773     return TRUE;
3774   }
3775
3776   if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
3777     {
3778       /* The list hasn't managed the
3779        * event, forward it to the combobox
3780        */
3781       gtk_bindings_activate_event (G_OBJECT (combo_box), event);
3782     }
3783
3784   return TRUE;
3785 }
3786
3787 static void
3788 gtk_combo_box_list_auto_scroll (GtkComboBox *combo_box,
3789                                 gint         x,
3790                                 gint         y)
3791 {
3792   GtkAdjustment *adj;
3793   GtkAllocation allocation;
3794   GtkWidget *tree_view = combo_box->priv->tree_view;
3795   gdouble value;
3796
3797   gtk_widget_get_allocation (tree_view, &allocation);
3798
3799   adj = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo_box->priv->scrolled_window));
3800   if (adj && gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj) > gtk_adjustment_get_page_size (adj))
3801     {
3802       if (x <= allocation.x &&
3803           gtk_adjustment_get_lower (adj) < gtk_adjustment_get_value (adj))
3804         {
3805           value = gtk_adjustment_get_value (adj) - (allocation.x - x + 1);
3806           gtk_adjustment_set_value (adj, value);
3807         }
3808       else if (x >= allocation.x + allocation.width &&
3809                gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj) > gtk_adjustment_get_value (adj))
3810         {
3811           value = gtk_adjustment_get_value (adj) + (x - allocation.x - allocation.width + 1);
3812           gtk_adjustment_set_value (adj, MAX (value, 0.0));
3813         }
3814     }
3815
3816   adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo_box->priv->scrolled_window));
3817   if (adj && gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj) > gtk_adjustment_get_page_size (adj))
3818     {
3819       if (y <= allocation.y &&
3820           gtk_adjustment_get_lower (adj) < gtk_adjustment_get_value (adj))
3821         {
3822           value = gtk_adjustment_get_value (adj) - (allocation.y - y + 1);
3823           gtk_adjustment_set_value (adj, value);
3824         }
3825       else if (y >= allocation.height &&
3826                gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj) > gtk_adjustment_get_value (adj))
3827         {
3828           value = gtk_adjustment_get_value (adj) + (y - allocation.height + 1);
3829           gtk_adjustment_set_value (adj, MAX (value, 0.0));
3830         }
3831     }
3832 }
3833
3834 static gboolean
3835 gtk_combo_box_list_scroll_timeout (GtkComboBox *combo_box)
3836 {
3837   GtkComboBoxPrivate *priv = combo_box->priv;
3838   gint x, y;
3839
3840   if (priv->auto_scroll)
3841     {
3842       gdk_window_get_device_position (gtk_widget_get_window (priv->tree_view),
3843                                       priv->grab_pointer,
3844                                       &x, &y, NULL);
3845       gtk_combo_box_list_auto_scroll (combo_box, x, y);
3846     }
3847
3848   return TRUE;
3849 }
3850
3851 static gboolean
3852 gtk_combo_box_list_enter_notify (GtkWidget        *widget,
3853                                  GdkEventCrossing *event,
3854                                  gpointer          data)
3855 {
3856   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3857
3858   combo_box->priv->auto_scroll = TRUE;
3859
3860   return TRUE;
3861 }
3862
3863 static gboolean
3864 gtk_combo_box_list_select_func (GtkTreeSelection *selection,
3865                                 GtkTreeModel     *model,
3866                                 GtkTreePath      *path,
3867                                 gboolean          path_currently_selected,
3868                                 gpointer          data)
3869 {
3870   GList *list, *columns;
3871   gboolean sensitive = FALSE;
3872
3873   columns = gtk_tree_view_get_columns (gtk_tree_selection_get_tree_view (selection));
3874
3875   for (list = columns; list && !sensitive; list = list->next)
3876     {
3877       GList *cells, *cell;
3878       gboolean cell_sensitive, cell_visible;
3879       GtkTreeIter iter;
3880       GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3881
3882       if (!gtk_tree_view_column_get_visible (column))
3883         continue;
3884
3885       gtk_tree_model_get_iter (model, &iter, path);
3886       gtk_tree_view_column_cell_set_cell_data (column, model, &iter,
3887                                                FALSE, FALSE);
3888
3889       cell = cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (column));
3890       while (cell)
3891         {
3892           g_object_get (cell->data,
3893                         "sensitive", &cell_sensitive,
3894                         "visible", &cell_visible,
3895                         NULL);
3896
3897           if (cell_visible && cell_sensitive)
3898             {
3899               sensitive = TRUE;
3900               break;
3901             }
3902
3903           cell = cell->next;
3904         }
3905
3906       g_list_free (cells);
3907     }
3908
3909   g_list_free (columns);
3910
3911   return sensitive;
3912 }
3913
3914 static void
3915 gtk_combo_box_list_row_changed (GtkTreeModel *model,
3916                                 GtkTreePath  *path,
3917                                 GtkTreeIter  *iter,
3918                                 gpointer      data)
3919 {
3920   /* XXX Do nothing ? */
3921 }
3922
3923 /*
3924  * GtkCellLayout implementation
3925  */
3926 static GtkCellArea *
3927 gtk_combo_box_cell_layout_get_area (GtkCellLayout *cell_layout)
3928 {
3929   GtkComboBox *combo = GTK_COMBO_BOX (cell_layout);
3930   GtkComboBoxPrivate *priv = combo->priv;
3931
3932   if (G_UNLIKELY (!priv->area))
3933     {
3934       priv->area = gtk_cell_area_box_new ();
3935       g_object_ref_sink (priv->area);
3936     }
3937
3938   return priv->area;
3939 }
3940
3941 /*
3942  * public API
3943  */
3944
3945 /**
3946  * gtk_combo_box_new:
3947  *
3948  * Creates a new empty #GtkComboBox.
3949  *
3950  * Return value: A new #GtkComboBox.
3951  *
3952  * Since: 2.4
3953  */
3954 GtkWidget *
3955 gtk_combo_box_new (void)
3956 {
3957   return g_object_new (GTK_TYPE_COMBO_BOX, NULL);
3958 }
3959
3960 /**
3961  * gtk_combo_box_new_with_area:
3962  * @area: the #GtkCellArea to use to layout cell renderers
3963  *
3964  * Creates a new empty #GtkComboBox using @area to layout cells.
3965  *
3966  * Return value: A new #GtkComboBox.
3967  */
3968 GtkWidget *
3969 gtk_combo_box_new_with_area (GtkCellArea  *area)
3970 {
3971   return g_object_new (GTK_TYPE_COMBO_BOX, "cell-area", area, NULL);
3972 }
3973
3974 /**
3975  * gtk_combo_box_new_with_area_and_entry:
3976  * @area: the #GtkCellArea to use to layout cell renderers
3977  *
3978  * Creates a new empty #GtkComboBox with an entry.
3979  *
3980  * The new combo box will use @area to layout cells.
3981  *
3982  * Return value: A new #GtkComboBox.
3983  */
3984 GtkWidget *
3985 gtk_combo_box_new_with_area_and_entry (GtkCellArea *area)
3986 {
3987   return g_object_new (GTK_TYPE_COMBO_BOX,
3988                        "has-entry", TRUE,
3989                        "cell-area", area,
3990                        NULL);
3991 }
3992
3993
3994 /**
3995  * gtk_combo_box_new_with_entry:
3996  *
3997  * Creates a new empty #GtkComboBox with an entry.
3998  *
3999  * Return value: A new #GtkComboBox.
4000  */
4001 GtkWidget *
4002 gtk_combo_box_new_with_entry (void)
4003 {
4004   return g_object_new (GTK_TYPE_COMBO_BOX, "has-entry", TRUE, NULL);
4005 }
4006
4007 /**
4008  * gtk_combo_box_new_with_model:
4009  * @model: A #GtkTreeModel.
4010  *
4011  * Creates a new #GtkComboBox with the model initialized to @model.
4012  *
4013  * Return value: A new #GtkComboBox.
4014  *
4015  * Since: 2.4
4016  */
4017 GtkWidget *
4018 gtk_combo_box_new_with_model (GtkTreeModel *model)
4019 {
4020   GtkComboBox *combo_box;
4021
4022   g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
4023
4024   combo_box = g_object_new (GTK_TYPE_COMBO_BOX, "model", model, NULL);
4025
4026   return GTK_WIDGET (combo_box);
4027 }
4028
4029 /**
4030  * gtk_combo_box_new_with_model_and_entry:
4031  * @model: A #GtkTreeModel
4032  *
4033  * Creates a new empty #GtkComboBox with an entry
4034  * and with the model initialized to @model.
4035  *
4036  * Return value: A new #GtkComboBox
4037  */
4038 GtkWidget *
4039 gtk_combo_box_new_with_model_and_entry (GtkTreeModel *model)
4040 {
4041   return g_object_new (GTK_TYPE_COMBO_BOX,
4042                        "has-entry", TRUE,
4043                        "model", model,
4044                        NULL);
4045 }
4046
4047 /**
4048  * gtk_combo_box_get_wrap_width:
4049  * @combo_box: A #GtkComboBox
4050  *
4051  * Returns the wrap width which is used to determine the number of columns
4052  * for the popup menu. If the wrap width is larger than 1, the combo box
4053  * is in table mode.
4054  *
4055  * Returns: the wrap width.
4056  *
4057  * Since: 2.6
4058  */
4059 gint
4060 gtk_combo_box_get_wrap_width (GtkComboBox *combo_box)
4061 {
4062   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4063
4064   return combo_box->priv->wrap_width;
4065 }
4066
4067 /**
4068  * gtk_combo_box_set_wrap_width:
4069  * @combo_box: A #GtkComboBox
4070  * @width: Preferred number of columns
4071  *
4072  * Sets the wrap width of @combo_box to be @width. The wrap width is basically
4073  * the preferred number of columns when you want the popup to be layed out
4074  * in a table.
4075  *
4076  * Since: 2.4
4077  */
4078 void
4079 gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
4080                               gint         width)
4081 {
4082   GtkComboBoxPrivate *priv;
4083
4084   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4085   g_return_if_fail (width >= 0);
4086
4087   priv = combo_box->priv;
4088
4089   if (width != priv->wrap_width)
4090     {
4091       priv->wrap_width = width;
4092
4093       gtk_combo_box_check_appearance (combo_box);
4094
4095       if (GTK_IS_TREE_MENU (priv->popup_widget))
4096         _gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (priv->popup_widget), priv->wrap_width);
4097
4098       g_object_notify (G_OBJECT (combo_box), "wrap-width");
4099     }
4100 }
4101
4102 /**
4103  * gtk_combo_box_get_row_span_column:
4104  * @combo_box: A #GtkComboBox
4105  *
4106  * Returns the column with row span information for @combo_box.
4107  *
4108  * Returns: the row span column.
4109  *
4110  * Since: 2.6
4111  */
4112 gint
4113 gtk_combo_box_get_row_span_column (GtkComboBox *combo_box)
4114 {
4115   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4116
4117   return combo_box->priv->row_column;
4118 }
4119
4120 /**
4121  * gtk_combo_box_set_row_span_column:
4122  * @combo_box: A #GtkComboBox.
4123  * @row_span: A column in the model passed during construction.
4124  *
4125  * Sets the column with row span information for @combo_box to be @row_span.
4126  * The row span column contains integers which indicate how many rows
4127  * an item should span.
4128  *
4129  * Since: 2.4
4130  */
4131 void
4132 gtk_combo_box_set_row_span_column (GtkComboBox *combo_box,
4133                                    gint         row_span)
4134 {
4135   GtkComboBoxPrivate *priv;
4136   gint col;
4137
4138   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4139
4140   priv = combo_box->priv;
4141
4142   col = gtk_tree_model_get_n_columns (priv->model);
4143   g_return_if_fail (row_span >= -1 && row_span < col);
4144
4145   if (row_span != priv->row_column)
4146     {
4147       priv->row_column = row_span;
4148
4149       if (GTK_IS_TREE_MENU (priv->popup_widget))
4150         _gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (priv->popup_widget), priv->row_column);
4151
4152       g_object_notify (G_OBJECT (combo_box), "row-span-column");
4153     }
4154 }
4155
4156 /**
4157  * gtk_combo_box_get_column_span_column:
4158  * @combo_box: A #GtkComboBox
4159  *
4160  * Returns the column with column span information for @combo_box.
4161  *
4162  * Returns: the column span column.
4163  *
4164  * Since: 2.6
4165  */
4166 gint
4167 gtk_combo_box_get_column_span_column (GtkComboBox *combo_box)
4168 {
4169   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4170
4171   return combo_box->priv->col_column;
4172 }
4173
4174 /**
4175  * gtk_combo_box_set_column_span_column:
4176  * @combo_box: A #GtkComboBox
4177  * @column_span: A column in the model passed during construction
4178  *
4179  * Sets the column with column span information for @combo_box to be
4180  * @column_span. The column span column contains integers which indicate
4181  * how many columns an item should span.
4182  *
4183  * Since: 2.4
4184  */
4185 void
4186 gtk_combo_box_set_column_span_column (GtkComboBox *combo_box,
4187                                       gint         column_span)
4188 {
4189   GtkComboBoxPrivate *priv;
4190   gint col;
4191
4192   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4193
4194   priv = combo_box->priv;
4195
4196   col = gtk_tree_model_get_n_columns (priv->model);
4197   g_return_if_fail (column_span >= -1 && column_span < col);
4198
4199   if (column_span != priv->col_column)
4200     {
4201       priv->col_column = column_span;
4202
4203       if (GTK_IS_TREE_MENU (priv->popup_widget))
4204         _gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (priv->popup_widget), priv->col_column);
4205
4206       g_object_notify (G_OBJECT (combo_box), "column-span-column");
4207     }
4208 }
4209
4210 /**
4211  * gtk_combo_box_get_active:
4212  * @combo_box: A #GtkComboBox
4213  *
4214  * Returns the index of the currently active item, or -1 if there's no
4215  * active item. If the model is a non-flat treemodel, and the active item
4216  * is not an immediate child of the root of the tree, this function returns
4217  * <literal>gtk_tree_path_get_indices (path)[0]</literal>, where
4218  * <literal>path</literal> is the #GtkTreePath of the active item.
4219  *
4220  * Return value: An integer which is the index of the currently active item,
4221  *     or -1 if there's no active item.
4222  *
4223  * Since: 2.4
4224  */
4225 gint
4226 gtk_combo_box_get_active (GtkComboBox *combo_box)
4227 {
4228   GtkComboBoxPrivate *priv;
4229   gint result;
4230
4231   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
4232
4233   priv = combo_box->priv;
4234
4235   if (gtk_tree_row_reference_valid (priv->active_row))
4236     {
4237       GtkTreePath *path;
4238
4239       path = gtk_tree_row_reference_get_path (priv->active_row);
4240       result = gtk_tree_path_get_indices (path)[0];
4241       gtk_tree_path_free (path);
4242     }
4243   else
4244     result = -1;
4245
4246   return result;
4247 }
4248
4249 /**
4250  * gtk_combo_box_set_active:
4251  * @combo_box: A #GtkComboBox
4252  * @index_: An index in the model passed during construction, or -1 to have
4253  * no active item
4254  *
4255  * Sets the active item of @combo_box to be the item at @index.
4256  *
4257  * Since: 2.4
4258  */
4259 void
4260 gtk_combo_box_set_active (GtkComboBox *combo_box,
4261                           gint         index_)
4262 {
4263   GtkTreePath *path = NULL;
4264   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4265   g_return_if_fail (index_ >= -1);
4266
4267   if (combo_box->priv->model == NULL)
4268     {
4269       /* Save index, in case the model is set after the index */
4270       combo_box->priv->active = index_;
4271       if (index_ != -1)
4272         return;
4273     }
4274
4275   if (index_ != -1)
4276     path = gtk_tree_path_new_from_indices (index_, -1);
4277
4278   gtk_combo_box_set_active_internal (combo_box, path);
4279
4280   if (path)
4281     gtk_tree_path_free (path);
4282 }
4283
4284 static void
4285 gtk_combo_box_set_active_internal (GtkComboBox *combo_box,
4286                                    GtkTreePath *path)
4287 {
4288   GtkComboBoxPrivate *priv = combo_box->priv;
4289   GtkTreePath *active_path;
4290   gint path_cmp;
4291
4292   /* Remember whether the initially active row is valid. */
4293   gboolean is_valid_row_reference = gtk_tree_row_reference_valid (priv->active_row);
4294
4295   if (path && is_valid_row_reference)
4296     {
4297       active_path = gtk_tree_row_reference_get_path (priv->active_row);
4298       path_cmp = gtk_tree_path_compare (path, active_path);
4299       gtk_tree_path_free (active_path);
4300       if (path_cmp == 0)
4301         return;
4302     }
4303
4304   if (priv->active_row)
4305     {
4306       gtk_tree_row_reference_free (priv->active_row);
4307       priv->active_row = NULL;
4308     }
4309
4310   if (!path)
4311     {
4312       if (priv->tree_view)
4313         gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view)));
4314       else
4315         {
4316           GtkMenu *menu = GTK_MENU (priv->popup_widget);
4317
4318           if (GTK_IS_MENU (menu))
4319             gtk_menu_set_active (menu, -1);
4320         }
4321
4322       if (priv->cell_view)
4323         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
4324
4325       /*
4326        *  Do not emit a "changed" signal when an already invalid selection was
4327        *  now set to invalid.
4328        */
4329       if (!is_valid_row_reference)
4330         return;
4331     }
4332   else
4333     {
4334       priv->active_row =
4335         gtk_tree_row_reference_new (priv->model, path);
4336
4337       if (priv->tree_view)
4338         {
4339           gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
4340                                     path, NULL, FALSE);
4341         }
4342       else if (GTK_IS_MENU (priv->popup_widget))
4343         {
4344           /* FIXME handle nested menus better */
4345           gtk_menu_set_active (GTK_MENU (priv->popup_widget),
4346                                gtk_tree_path_get_indices (path)[0]);
4347         }
4348
4349       if (priv->cell_view)
4350         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view),
4351                                          path);
4352     }
4353
4354   g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
4355   g_object_notify (G_OBJECT (combo_box), "active");
4356   if (combo_box->priv->id_column >= 0)
4357     g_object_notify (G_OBJECT (combo_box), "active-id");
4358 }
4359
4360
4361 /**
4362  * gtk_combo_box_get_active_iter:
4363  * @combo_box: A #GtkComboBox
4364  * @iter: (out): The uninitialized #GtkTreeIter
4365  *
4366  * Sets @iter to point to the current active item, if it exists.
4367  *
4368  * Return value: %TRUE, if @iter was set
4369  *
4370  * Since: 2.4
4371  */
4372 gboolean
4373 gtk_combo_box_get_active_iter (GtkComboBox     *combo_box,
4374                                GtkTreeIter     *iter)
4375 {
4376   GtkTreePath *path;
4377   gboolean result;
4378
4379   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
4380
4381   if (!gtk_tree_row_reference_valid (combo_box->priv->active_row))
4382     return FALSE;
4383
4384   path = gtk_tree_row_reference_get_path (combo_box->priv->active_row);
4385   result = gtk_tree_model_get_iter (combo_box->priv->model, iter, path);
4386   gtk_tree_path_free (path);
4387
4388   return result;
4389 }
4390
4391 /**
4392  * gtk_combo_box_set_active_iter:
4393  * @combo_box: A #GtkComboBox
4394  * @iter: (allow-none): The #GtkTreeIter, or %NULL
4395  *
4396  * Sets the current active item to be the one referenced by @iter, or
4397  * unsets the active item if @iter is %NULL.
4398  *
4399  * Since: 2.4
4400  */
4401 void
4402 gtk_combo_box_set_active_iter (GtkComboBox     *combo_box,
4403                                GtkTreeIter     *iter)
4404 {
4405   GtkTreePath *path = NULL;
4406
4407   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4408
4409   if (iter)
4410     path = gtk_tree_model_get_path (gtk_combo_box_get_model (combo_box), iter);
4411
4412   gtk_combo_box_set_active_internal (combo_box, path);
4413   gtk_tree_path_free (path);
4414 }
4415
4416 /**
4417  * gtk_combo_box_set_model:
4418  * @combo_box: A #GtkComboBox
4419  * @model: (allow-none): A #GtkTreeModel
4420  *
4421  * Sets the model used by @combo_box to be @model. Will unset a previously set
4422  * model (if applicable). If model is %NULL, then it will unset the model.
4423  *
4424  * Note that this function does not clear the cell renderers, you have to
4425  * call gtk_cell_layout_clear() yourself if you need to set up different
4426  * cell renderers for the new model.
4427  *
4428  * Since: 2.4
4429  */
4430 void
4431 gtk_combo_box_set_model (GtkComboBox  *combo_box,
4432                          GtkTreeModel *model)
4433 {
4434   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4435   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
4436
4437   if (model == combo_box->priv->model)
4438     return;
4439
4440   gtk_combo_box_unset_model (combo_box);
4441
4442   if (model == NULL)
4443     goto out;
4444
4445   combo_box->priv->model = model;
4446   g_object_ref (combo_box->priv->model);
4447
4448   combo_box->priv->inserted_id =
4449     g_signal_connect (combo_box->priv->model, "row-inserted",
4450                       G_CALLBACK (gtk_combo_box_model_row_inserted),
4451                       combo_box);
4452   combo_box->priv->deleted_id =
4453     g_signal_connect (combo_box->priv->model, "row-deleted",
4454                       G_CALLBACK (gtk_combo_box_model_row_deleted),
4455                       combo_box);
4456   combo_box->priv->reordered_id =
4457     g_signal_connect (combo_box->priv->model, "rows-reordered",
4458                       G_CALLBACK (gtk_combo_box_model_rows_reordered),
4459                       combo_box);
4460   combo_box->priv->changed_id =
4461     g_signal_connect (combo_box->priv->model, "row-changed",
4462                       G_CALLBACK (gtk_combo_box_model_row_changed),
4463                       combo_box);
4464
4465   if (combo_box->priv->tree_view)
4466     {
4467       /* list mode */
4468       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view),
4469                                combo_box->priv->model);
4470       gtk_combo_box_list_popup_resize (combo_box);
4471     }
4472
4473   if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
4474     {
4475       /* menu mode */
4476       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget),
4477                                 combo_box->priv->model);
4478     }
4479
4480   if (combo_box->priv->cell_view)
4481     gtk_cell_view_set_model (GTK_CELL_VIEW (combo_box->priv->cell_view),
4482                              combo_box->priv->model);
4483
4484   if (combo_box->priv->active != -1)
4485     {
4486       /* If an index was set in advance, apply it now */
4487       gtk_combo_box_set_active (combo_box, combo_box->priv->active);
4488       combo_box->priv->active = -1;
4489     }
4490
4491 out:
4492   gtk_combo_box_update_sensitivity (combo_box);
4493
4494   g_object_notify (G_OBJECT (combo_box), "model");
4495 }
4496
4497 /**
4498  * gtk_combo_box_get_model:
4499  * @combo_box: A #GtkComboBox
4500  *
4501  * Returns the #GtkTreeModel which is acting as data source for @combo_box.
4502  *
4503  * Return value: (transfer none): A #GtkTreeModel which was passed
4504  *     during construction.
4505  *
4506  * Since: 2.4
4507  */
4508 GtkTreeModel *
4509 gtk_combo_box_get_model (GtkComboBox *combo_box)
4510 {
4511   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
4512
4513   return combo_box->priv->model;
4514 }
4515
4516 static void
4517 gtk_combo_box_real_move_active (GtkComboBox   *combo_box,
4518                                 GtkScrollType  scroll)
4519 {
4520   GtkTreeIter iter;
4521   GtkTreeIter new_iter;
4522   gboolean    active_iter;
4523   gboolean    found;
4524
4525   if (!combo_box->priv->model)
4526     {
4527       gtk_widget_error_bell (GTK_WIDGET (combo_box));
4528       return;
4529     }
4530
4531   active_iter = gtk_combo_box_get_active_iter (combo_box, &iter);
4532
4533   switch (scroll)
4534     {
4535     case GTK_SCROLL_STEP_BACKWARD:
4536     case GTK_SCROLL_STEP_UP:
4537     case GTK_SCROLL_STEP_LEFT:
4538       if (active_iter)
4539         {
4540           found = tree_prev (combo_box, combo_box->priv->model,
4541                              &iter, &new_iter, FALSE);
4542           break;
4543         }
4544       /* else fall through */
4545
4546     case GTK_SCROLL_PAGE_FORWARD:
4547     case GTK_SCROLL_PAGE_DOWN:
4548     case GTK_SCROLL_PAGE_RIGHT:
4549     case GTK_SCROLL_END:
4550       found = tree_last (combo_box, combo_box->priv->model, &new_iter, FALSE);
4551       break;
4552
4553     case GTK_SCROLL_STEP_FORWARD:
4554     case GTK_SCROLL_STEP_DOWN:
4555     case GTK_SCROLL_STEP_RIGHT:
4556       if (active_iter)
4557         {
4558           found = tree_next (combo_box, combo_box->priv->model,
4559                              &iter, &new_iter, FALSE);
4560           break;
4561         }
4562       /* else fall through */
4563
4564     case GTK_SCROLL_PAGE_BACKWARD:
4565     case GTK_SCROLL_PAGE_UP:
4566     case GTK_SCROLL_PAGE_LEFT:
4567     case GTK_SCROLL_START:
4568       found = tree_first (combo_box, combo_box->priv->model, &new_iter, FALSE);
4569       break;
4570
4571     default:
4572       return;
4573     }
4574
4575   if (found && active_iter)
4576     {
4577       GtkTreePath *old_path;
4578       GtkTreePath *new_path;
4579
4580       old_path = gtk_tree_model_get_path (combo_box->priv->model, &iter);
4581       new_path = gtk_tree_model_get_path (combo_box->priv->model, &new_iter);
4582
4583       if (gtk_tree_path_compare (old_path, new_path) == 0)
4584         found = FALSE;
4585
4586       gtk_tree_path_free (old_path);
4587       gtk_tree_path_free (new_path);
4588     }
4589
4590   if (found)
4591     {
4592       gtk_combo_box_set_active_iter (combo_box, &new_iter);
4593     }
4594   else
4595     {
4596       gtk_widget_error_bell (GTK_WIDGET (combo_box));
4597     }
4598 }
4599
4600 static gboolean
4601 gtk_combo_box_mnemonic_activate (GtkWidget *widget,
4602                                  gboolean   group_cycling)
4603 {
4604   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4605
4606   if (combo_box->priv->has_entry)
4607     {
4608       GtkWidget* child;
4609
4610       child = gtk_bin_get_child (GTK_BIN (combo_box));
4611       if (child)
4612         gtk_widget_grab_focus (child);
4613     }
4614   else
4615     gtk_widget_grab_focus (combo_box->priv->button);
4616
4617   return TRUE;
4618 }
4619
4620 static void
4621 gtk_combo_box_grab_focus (GtkWidget *widget)
4622 {
4623   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4624
4625   if (combo_box->priv->has_entry)
4626     {
4627       GtkWidget *child;
4628
4629       child = gtk_bin_get_child (GTK_BIN (combo_box));
4630       if (child)
4631         gtk_widget_grab_focus (child);
4632     }
4633   else
4634     gtk_widget_grab_focus (combo_box->priv->button);
4635 }
4636
4637 static void
4638 gtk_combo_box_destroy (GtkWidget *widget)
4639 {
4640   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4641
4642   if (combo_box->priv->popup_idle_id > 0)
4643     {
4644       g_source_remove (combo_box->priv->popup_idle_id);
4645       combo_box->priv->popup_idle_id = 0;
4646     }
4647
4648   gtk_combo_box_popdown (combo_box);
4649
4650   if (combo_box->priv->row_separator_destroy)
4651     combo_box->priv->row_separator_destroy (combo_box->priv->row_separator_data);
4652
4653   combo_box->priv->row_separator_func = NULL;
4654   combo_box->priv->row_separator_data = NULL;
4655   combo_box->priv->row_separator_destroy = NULL;
4656
4657   GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->destroy (widget);
4658   combo_box->priv->cell_view = NULL;
4659 }
4660
4661 static void
4662 gtk_combo_box_entry_contents_changed (GtkEntry *entry,
4663                                       gpointer  user_data)
4664 {
4665   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
4666
4667   /*
4668    *  Fixes regression reported in bug #574059. The old functionality relied on
4669    *  bug #572478.  As a bugfix, we now emit the "changed" signal ourselves
4670    *  when the selection was already set to -1.
4671    */
4672   if (gtk_combo_box_get_active(combo_box) == -1)
4673     g_signal_emit_by_name (combo_box, "changed");
4674   else
4675     gtk_combo_box_set_active (combo_box, -1);
4676 }
4677
4678 static void
4679 gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
4680                                     gpointer     user_data)
4681 {
4682   GtkTreeModel *model;
4683   GtkTreeIter iter;
4684
4685   if (gtk_combo_box_get_active_iter (combo_box, &iter))
4686     {
4687       GtkEntry *entry = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (combo_box)));
4688
4689       if (entry)
4690         {
4691           GtkTreePath *path;
4692           gchar       *path_str;
4693           gchar       *text = NULL;
4694
4695           model    = gtk_combo_box_get_model (combo_box);
4696           path     = gtk_tree_model_get_path (model, &iter);
4697           path_str = gtk_tree_path_to_string (path);
4698
4699           g_signal_handlers_block_by_func (entry,
4700                                            gtk_combo_box_entry_contents_changed,
4701                                            combo_box);
4702
4703
4704           g_signal_emit (combo_box, combo_box_signals[FORMAT_ENTRY_TEXT], 0,
4705                          path_str, &text);
4706
4707           gtk_entry_set_text (entry, text);
4708
4709           g_signal_handlers_unblock_by_func (entry,
4710                                              gtk_combo_box_entry_contents_changed,
4711                                              combo_box);
4712
4713           gtk_tree_path_free (path);
4714           g_free (text);
4715           g_free (path_str);
4716         }
4717     }
4718 }
4719
4720 static gchar *
4721 gtk_combo_box_format_entry_text (GtkComboBox     *combo_box,
4722                                  const gchar     *path)
4723 {
4724   GtkComboBoxPrivate *priv = combo_box->priv;
4725   GtkTreeModel       *model;
4726   GtkTreeIter         iter;
4727   gchar              *text = NULL;
4728
4729   if (priv->text_column >= 0)
4730     {
4731       model = gtk_combo_box_get_model (combo_box);
4732       gtk_tree_model_get_iter_from_string (model, &iter, path);
4733
4734       gtk_tree_model_get (model, &iter,
4735                           priv->text_column, &text,
4736                           -1);
4737     }
4738
4739   return text;
4740 }
4741
4742
4743 static GObject *
4744 gtk_combo_box_constructor (GType                  type,
4745                            guint                  n_construct_properties,
4746                            GObjectConstructParam *construct_properties)
4747 {
4748   GObject            *object;
4749   GtkComboBox        *combo_box;
4750   GtkComboBoxPrivate *priv;
4751
4752   object = G_OBJECT_CLASS (gtk_combo_box_parent_class)->constructor
4753     (type, n_construct_properties, construct_properties);
4754
4755   combo_box = GTK_COMBO_BOX (object);
4756   priv      = combo_box->priv;
4757
4758   if (!priv->area)
4759     {
4760       priv->area = gtk_cell_area_box_new ();
4761       g_object_ref_sink (priv->area);
4762     }
4763
4764   priv->cell_view = gtk_cell_view_new_with_context (priv->area, NULL);
4765   gtk_cell_view_set_fit_model (GTK_CELL_VIEW (priv->cell_view), TRUE);
4766   gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), priv->model);
4767   gtk_widget_set_parent (priv->cell_view, GTK_WIDGET (combo_box));
4768   _gtk_bin_set_child (GTK_BIN (combo_box), priv->cell_view);
4769   gtk_widget_show (priv->cell_view);
4770
4771   gtk_combo_box_check_appearance (combo_box);
4772
4773   if (priv->has_entry)
4774     {
4775       GtkWidget *entry;
4776       GtkStyleContext *context;
4777
4778       entry = gtk_entry_new ();
4779       gtk_widget_show (entry);
4780       gtk_container_add (GTK_CONTAINER (combo_box), entry);
4781
4782       context = gtk_widget_get_style_context (GTK_WIDGET (combo_box));
4783       gtk_style_context_add_class (context, GTK_STYLE_CLASS_COMBOBOX_ENTRY);
4784
4785       priv->text_renderer = gtk_cell_renderer_text_new ();
4786       gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
4787                                   priv->text_renderer, TRUE);
4788
4789       gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), -1);
4790
4791       g_signal_connect (combo_box, "changed",
4792                         G_CALLBACK (gtk_combo_box_entry_active_changed), NULL);
4793     }
4794
4795   return object;
4796 }
4797
4798
4799 static void
4800 gtk_combo_box_dispose(GObject* object)
4801 {
4802   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
4803
4804   if (GTK_IS_MENU (combo_box->priv->popup_widget))
4805     {
4806       gtk_combo_box_menu_destroy (combo_box);
4807       gtk_menu_detach (GTK_MENU (combo_box->priv->popup_widget));
4808       combo_box->priv->popup_widget = NULL;
4809     }
4810
4811   if (combo_box->priv->area)
4812     {
4813       g_object_unref (combo_box->priv->area);
4814       combo_box->priv->area = NULL;
4815     }
4816
4817   if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view))
4818     gtk_combo_box_list_destroy (combo_box);
4819
4820   if (combo_box->priv->popup_window)
4821     {
4822       gtk_widget_destroy (combo_box->priv->popup_window);
4823       combo_box->priv->popup_window = NULL;
4824     }
4825
4826   gtk_combo_box_unset_model (combo_box);
4827
4828   G_OBJECT_CLASS (gtk_combo_box_parent_class)->dispose (object);
4829 }
4830
4831 static void
4832 gtk_combo_box_finalize (GObject *object)
4833 {
4834   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
4835
4836   g_free (combo_box->priv->tearoff_title);
4837
4838   G_OBJECT_CLASS (gtk_combo_box_parent_class)->finalize (object);
4839 }
4840
4841 static gboolean
4842 gtk_cell_editable_key_press (GtkWidget   *widget,
4843                              GdkEventKey *event,
4844                              gpointer     data)
4845 {
4846   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
4847
4848   if (event->keyval == GDK_KEY_Escape)
4849     {
4850       g_object_set (combo_box,
4851                     "editing-canceled", TRUE,
4852                     NULL);
4853       gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4854       gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4855
4856       return TRUE;
4857     }
4858   else if (event->keyval == GDK_KEY_Return ||
4859            event->keyval == GDK_KEY_ISO_Enter ||
4860            event->keyval == GDK_KEY_KP_Enter)
4861     {
4862       gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4863       gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4864
4865       return TRUE;
4866     }
4867
4868   return FALSE;
4869 }
4870
4871 static gboolean
4872 popdown_idle (gpointer data)
4873 {
4874   GtkComboBox *combo_box;
4875
4876   combo_box = GTK_COMBO_BOX (data);
4877
4878   gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4879   gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4880
4881   g_object_unref (combo_box);
4882
4883   return FALSE;
4884 }
4885
4886 static void
4887 popdown_handler (GtkWidget *widget,
4888                  gpointer   data)
4889 {
4890   gdk_threads_add_idle (popdown_idle, g_object_ref (data));
4891 }
4892
4893 static gboolean
4894 popup_idle (gpointer data)
4895 {
4896   GtkComboBox *combo_box;
4897
4898   combo_box = GTK_COMBO_BOX (data);
4899
4900   if (GTK_IS_MENU (combo_box->priv->popup_widget) &&
4901       combo_box->priv->cell_view)
4902     g_signal_connect_object (combo_box->priv->popup_widget,
4903                              "unmap", G_CALLBACK (popdown_handler),
4904                              combo_box, 0);
4905
4906   /* we unset this if a menu item is activated */
4907   g_object_set (combo_box,
4908                 "editing-canceled", TRUE,
4909                 NULL);
4910   gtk_combo_box_popup (combo_box);
4911
4912   combo_box->priv->popup_idle_id = 0;
4913   combo_box->priv->activate_button = 0;
4914   combo_box->priv->activate_time = 0;
4915
4916   return FALSE;
4917 }
4918
4919 static void
4920 gtk_combo_box_start_editing (GtkCellEditable *cell_editable,
4921                              GdkEvent        *event)
4922 {
4923   GtkComboBox *combo_box = GTK_COMBO_BOX (cell_editable);
4924   GtkWidget *child;
4925
4926   combo_box->priv->is_cell_renderer = TRUE;
4927
4928   if (combo_box->priv->cell_view)
4929     {
4930       g_signal_connect_object (combo_box->priv->button, "key-press-event",
4931                                G_CALLBACK (gtk_cell_editable_key_press),
4932                                cell_editable, 0);
4933
4934       gtk_widget_grab_focus (combo_box->priv->button);
4935     }
4936   else
4937     {
4938       child = gtk_bin_get_child (GTK_BIN (combo_box));
4939
4940       g_signal_connect_object (child, "key-press-event",
4941                                G_CALLBACK (gtk_cell_editable_key_press),
4942                                cell_editable, 0);
4943
4944       gtk_widget_grab_focus (child);
4945       gtk_widget_set_can_focus (combo_box->priv->button, FALSE);
4946     }
4947
4948   /* we do the immediate popup only for the optionmenu-like
4949    * appearance
4950    */
4951   if (combo_box->priv->is_cell_renderer &&
4952       combo_box->priv->cell_view && !combo_box->priv->tree_view)
4953     {
4954       if (event && event->type == GDK_BUTTON_PRESS)
4955         {
4956           GdkEventButton *event_button = (GdkEventButton *)event;
4957
4958           combo_box->priv->activate_button = event_button->button;
4959           combo_box->priv->activate_time = event_button->time;
4960         }
4961
4962       combo_box->priv->popup_idle_id =
4963           gdk_threads_add_idle (popup_idle, combo_box);
4964     }
4965 }
4966
4967
4968 /**
4969  * gtk_combo_box_get_add_tearoffs:
4970  * @combo_box: a #GtkComboBox
4971  *
4972  * Gets the current value of the :add-tearoffs property.
4973  *
4974  * Return value: the current value of the :add-tearoffs property.
4975  */
4976 gboolean
4977 gtk_combo_box_get_add_tearoffs (GtkComboBox *combo_box)
4978 {
4979   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
4980
4981   return combo_box->priv->add_tearoffs;
4982 }
4983
4984 /**
4985  * gtk_combo_box_set_add_tearoffs:
4986  * @combo_box: a #GtkComboBox
4987  * @add_tearoffs: %TRUE to add tearoff menu items
4988  *
4989  * Sets whether the popup menu should have a tearoff
4990  * menu item.
4991  *
4992  * Since: 2.6
4993  */
4994 void
4995 gtk_combo_box_set_add_tearoffs (GtkComboBox *combo_box,
4996                                 gboolean     add_tearoffs)
4997 {
4998   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4999
5000   add_tearoffs = add_tearoffs != FALSE;
5001
5002   if (combo_box->priv->add_tearoffs != add_tearoffs)
5003     {
5004       combo_box->priv->add_tearoffs = add_tearoffs;
5005       gtk_combo_box_check_appearance (combo_box);
5006
5007       if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
5008         _gtk_tree_menu_set_tearoff (GTK_TREE_MENU (combo_box->priv->popup_widget),
5009                                     combo_box->priv->add_tearoffs);
5010
5011       g_object_notify (G_OBJECT (combo_box), "add-tearoffs");
5012     }
5013 }
5014
5015 /**
5016  * gtk_combo_box_get_title:
5017  * @combo_box: a #GtkComboBox
5018  *
5019  * Gets the current title of the menu in tearoff mode. See
5020  * gtk_combo_box_set_add_tearoffs().
5021  *
5022  * Returns: the menu's title in tearoff mode. This is an internal copy of the
5023  * string which must not be freed.
5024  *
5025  * Since: 2.10
5026  */
5027 const gchar*
5028 gtk_combo_box_get_title (GtkComboBox *combo_box)
5029 {
5030   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5031
5032   return combo_box->priv->tearoff_title;
5033 }
5034
5035 static void
5036 gtk_combo_box_update_title (GtkComboBox *combo_box)
5037 {
5038   gtk_combo_box_check_appearance (combo_box);
5039
5040   if (combo_box->priv->popup_widget &&
5041       GTK_IS_MENU (combo_box->priv->popup_widget))
5042     gtk_menu_set_title (GTK_MENU (combo_box->priv->popup_widget),
5043                         combo_box->priv->tearoff_title);
5044 }
5045
5046 /**
5047  * gtk_combo_box_set_title:
5048  * @combo_box: a #GtkComboBox
5049  * @title: a title for the menu in tearoff mode
5050  *
5051  * Sets the menu's title in tearoff mode.
5052  *
5053  * Since: 2.10
5054  */
5055 void
5056 gtk_combo_box_set_title (GtkComboBox *combo_box,
5057                          const gchar *title)
5058 {
5059   GtkComboBoxPrivate *priv;
5060
5061   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5062
5063   priv = combo_box->priv;
5064
5065   if (strcmp (title ? title : "",
5066               priv->tearoff_title ? priv->tearoff_title : "") != 0)
5067     {
5068       g_free (priv->tearoff_title);
5069       priv->tearoff_title = g_strdup (title);
5070
5071       gtk_combo_box_update_title (combo_box);
5072
5073       g_object_notify (G_OBJECT (combo_box), "tearoff-title");
5074     }
5075 }
5076
5077
5078 /**
5079  * gtk_combo_box_set_popup_fixed_width:
5080  * @combo_box: a #GtkComboBox
5081  * @fixed: whether to use a fixed popup width
5082  *
5083  * Specifies whether the popup's width should be a fixed width
5084  * matching the allocated width of the combo box.
5085  *
5086  * Since: 3.0
5087  **/
5088 void
5089 gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
5090                                      gboolean     fixed)
5091 {
5092   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5093
5094   if (combo_box->priv->popup_fixed_width != fixed)
5095     {
5096       combo_box->priv->popup_fixed_width = fixed;
5097
5098       g_object_notify (G_OBJECT (combo_box), "popup-fixed-width");
5099     }
5100 }
5101
5102 /**
5103  * gtk_combo_box_get_popup_fixed_width:
5104  * @combo_box: a #GtkComboBox
5105  *
5106  * Gets whether the popup uses a fixed width matching
5107  * the allocated width of the combo box.
5108  *
5109  * Returns: %TRUE if the popup uses a fixed width
5110  *
5111  * Since: 3.0
5112  **/
5113 gboolean
5114 gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box)
5115 {
5116   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5117
5118   return combo_box->priv->popup_fixed_width;
5119 }
5120
5121
5122 /**
5123  * gtk_combo_box_get_popup_accessible:
5124  * @combo_box: a #GtkComboBox
5125  *
5126  * Gets the accessible object corresponding to the combo box's popup.
5127  *
5128  * This function is mostly intended for use by accessibility technologies;
5129  * applications should have little use for it.
5130  *
5131  * Returns: (transfer none): the accessible object corresponding
5132  *     to the combo box's popup.
5133  *
5134  * Since: 2.6
5135  */
5136 AtkObject*
5137 gtk_combo_box_get_popup_accessible (GtkComboBox *combo_box)
5138 {
5139   AtkObject *atk_obj;
5140
5141   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5142
5143   if (combo_box->priv->popup_widget)
5144     {
5145       atk_obj = gtk_widget_get_accessible (combo_box->priv->popup_widget);
5146       return atk_obj;
5147     }
5148
5149   return NULL;
5150 }
5151
5152 /**
5153  * gtk_combo_box_get_row_separator_func: (skip)
5154  * @combo_box: a #GtkComboBox
5155  *
5156  * Returns the current row separator function.
5157  *
5158  * Return value: the current row separator function.
5159  *
5160  * Since: 2.6
5161  */
5162 GtkTreeViewRowSeparatorFunc
5163 gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box)
5164 {
5165   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5166
5167   return combo_box->priv->row_separator_func;
5168 }
5169
5170 /**
5171  * gtk_combo_box_set_row_separator_func:
5172  * @combo_box: a #GtkComboBox
5173  * @func: a #GtkTreeViewRowSeparatorFunc
5174  * @data: (allow-none): user data to pass to @func, or %NULL
5175  * @destroy: (allow-none): destroy notifier for @data, or %NULL
5176  *
5177  * Sets the row separator function, which is used to determine
5178  * whether a row should be drawn as a separator. If the row separator
5179  * function is %NULL, no separators are drawn. This is the default value.
5180  *
5181  * Since: 2.6
5182  */
5183 void
5184 gtk_combo_box_set_row_separator_func (GtkComboBox                 *combo_box,
5185                                       GtkTreeViewRowSeparatorFunc  func,
5186                                       gpointer                     data,
5187                                       GDestroyNotify               destroy)
5188 {
5189   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5190
5191   if (combo_box->priv->row_separator_destroy)
5192     combo_box->priv->row_separator_destroy (combo_box->priv->row_separator_data);
5193
5194   combo_box->priv->row_separator_func = func;
5195   combo_box->priv->row_separator_data = data;
5196   combo_box->priv->row_separator_destroy = destroy;
5197
5198   /* Provoke the underlying treeview/menu to rebuild themselves with the new separator func */
5199   if (combo_box->priv->tree_view)
5200     {
5201       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view), NULL);
5202       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view), combo_box->priv->model);
5203     }
5204
5205   if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
5206     {
5207       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget), NULL);
5208       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget), combo_box->priv->model);
5209     }
5210
5211   gtk_widget_queue_draw (GTK_WIDGET (combo_box));
5212 }
5213
5214 /**
5215  * gtk_combo_box_set_button_sensitivity:
5216  * @combo_box: a #GtkComboBox
5217  * @sensitivity: specify the sensitivity of the dropdown button
5218  *
5219  * Sets whether the dropdown button of the combo box should be
5220  * always sensitive (%GTK_SENSITIVITY_ON), never sensitive (%GTK_SENSITIVITY_OFF)
5221  * or only if there is at least one item to display (%GTK_SENSITIVITY_AUTO).
5222  *
5223  * Since: 2.14
5224  **/
5225 void
5226 gtk_combo_box_set_button_sensitivity (GtkComboBox        *combo_box,
5227                                       GtkSensitivityType  sensitivity)
5228 {
5229   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5230
5231   if (combo_box->priv->button_sensitivity != sensitivity)
5232     {
5233       combo_box->priv->button_sensitivity = sensitivity;
5234       gtk_combo_box_update_sensitivity (combo_box);
5235
5236       g_object_notify (G_OBJECT (combo_box), "button-sensitivity");
5237     }
5238 }
5239
5240 /**
5241  * gtk_combo_box_get_button_sensitivity:
5242  * @combo_box: a #GtkComboBox
5243  *
5244  * Returns whether the combo box sets the dropdown button
5245  * sensitive or not when there are no items in the model.
5246  *
5247  * Return Value: %GTK_SENSITIVITY_ON if the dropdown button
5248  *    is sensitive when the model is empty, %GTK_SENSITIVITY_OFF
5249  *    if the button is always insensitive or
5250  *    %GTK_SENSITIVITY_AUTO if it is only sensitive as long as
5251  *    the model has one item to be selected.
5252  *
5253  * Since: 2.14
5254  **/
5255 GtkSensitivityType
5256 gtk_combo_box_get_button_sensitivity (GtkComboBox *combo_box)
5257 {
5258   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5259
5260   return combo_box->priv->button_sensitivity;
5261 }
5262
5263
5264 /**
5265  * gtk_combo_box_get_has_entry:
5266  * @combo_box: a #GtkComboBox
5267  *
5268  * Returns whether the combo box has an entry.
5269  *
5270  * Return Value: whether there is an entry in @combo_box.
5271  *
5272  * Since: 2.24
5273  **/
5274 gboolean
5275 gtk_combo_box_get_has_entry (GtkComboBox *combo_box)
5276 {
5277   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5278
5279   return combo_box->priv->has_entry;
5280 }
5281
5282 /**
5283  * gtk_combo_box_set_entry_text_column:
5284  * @combo_box: A #GtkComboBox
5285  * @text_column: A column in @model to get the strings from for
5286  *     the internal entry
5287  *
5288  * Sets the model column which @combo_box should use to get strings from
5289  * to be @text_column. The column @text_column in the model of @combo_box
5290  * must be of type %G_TYPE_STRING.
5291  *
5292  * This is only relevant if @combo_box has been created with
5293  * #GtkComboBox:has-entry as %TRUE.
5294  *
5295  * Since: 2.24
5296  */
5297 void
5298 gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
5299                                      gint         text_column)
5300 {
5301   GtkComboBoxPrivate *priv = combo_box->priv;
5302   GtkTreeModel *model;
5303
5304   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5305
5306   model = gtk_combo_box_get_model (combo_box);
5307
5308   g_return_if_fail (text_column >= 0);
5309   g_return_if_fail (model == NULL || text_column < gtk_tree_model_get_n_columns (model));
5310
5311   priv->text_column = text_column;
5312
5313   if (priv->text_renderer != NULL)
5314     gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box),
5315                                     priv->text_renderer,
5316                                     "text", text_column,
5317                                     NULL);
5318 }
5319
5320 /**
5321  * gtk_combo_box_get_entry_text_column:
5322  * @combo_box: A #GtkComboBox.
5323  *
5324  * Returns the column which @combo_box is using to get the strings
5325  * from to display in the internal entry.
5326  *
5327  * Return value: A column in the data source model of @combo_box.
5328  *
5329  * Since: 2.24
5330  */
5331 gint
5332 gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box)
5333 {
5334   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
5335
5336   return combo_box->priv->text_column;
5337 }
5338
5339 /**
5340  * gtk_combo_box_set_focus_on_click:
5341  * @combo: a #GtkComboBox
5342  * @focus_on_click: whether the combo box grabs focus when clicked
5343  *    with the mouse
5344  *
5345  * Sets whether the combo box will grab focus when it is clicked with
5346  * the mouse. Making mouse clicks not grab focus is useful in places
5347  * like toolbars where you don't want the keyboard focus removed from
5348  * the main area of the application.
5349  *
5350  * Since: 2.6
5351  */
5352 void
5353 gtk_combo_box_set_focus_on_click (GtkComboBox *combo_box,
5354                                   gboolean     focus_on_click)
5355 {
5356   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5357
5358   focus_on_click = focus_on_click != FALSE;
5359
5360   if (combo_box->priv->focus_on_click != focus_on_click)
5361     {
5362       combo_box->priv->focus_on_click = focus_on_click;
5363
5364       if (combo_box->priv->button)
5365         gtk_button_set_focus_on_click (GTK_BUTTON (combo_box->priv->button),
5366                                        focus_on_click);
5367
5368       g_object_notify (G_OBJECT (combo_box), "focus-on-click");
5369     }
5370 }
5371
5372 /**
5373  * gtk_combo_box_get_focus_on_click:
5374  * @combo: a #GtkComboBox
5375  *
5376  * Returns whether the combo box grabs focus when it is clicked
5377  * with the mouse. See gtk_combo_box_set_focus_on_click().
5378  *
5379  * Return value: %TRUE if the combo box grabs focus when it is
5380  *     clicked with the mouse.
5381  *
5382  * Since: 2.6
5383  */
5384 gboolean
5385 gtk_combo_box_get_focus_on_click (GtkComboBox *combo_box)
5386 {
5387   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5388
5389   return combo_box->priv->focus_on_click;
5390 }
5391
5392
5393 static gboolean
5394 gtk_combo_box_buildable_custom_tag_start (GtkBuildable  *buildable,
5395                                           GtkBuilder    *builder,
5396                                           GObject       *child,
5397                                           const gchar   *tagname,
5398                                           GMarkupParser *parser,
5399                                           gpointer      *data)
5400 {
5401   if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
5402                                                 tagname, parser, data))
5403     return TRUE;
5404
5405   return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
5406                                                       tagname, parser, data);
5407 }
5408
5409 static void
5410 gtk_combo_box_buildable_custom_tag_end (GtkBuildable *buildable,
5411                                         GtkBuilder   *builder,
5412                                         GObject      *child,
5413                                         const gchar  *tagname,
5414                                         gpointer     *data)
5415 {
5416   if (!_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data))
5417     parent_buildable_iface->custom_tag_end (buildable, builder, child, tagname, data);
5418 }
5419
5420 static GObject *
5421 gtk_combo_box_buildable_get_internal_child (GtkBuildable *buildable,
5422                                             GtkBuilder   *builder,
5423                                             const gchar  *childname)
5424 {
5425   GtkComboBox *combo_box = GTK_COMBO_BOX (buildable);
5426
5427   if (combo_box->priv->has_entry && strcmp (childname, "entry") == 0)
5428     return G_OBJECT (gtk_bin_get_child (GTK_BIN (buildable)));
5429
5430   return parent_buildable_iface->get_internal_child (buildable, builder, childname);
5431 }
5432
5433 static void
5434 gtk_combo_box_get_preferred_width (GtkWidget *widget,
5435                                    gint      *minimum_size,
5436                                    gint      *natural_size)
5437 {
5438   GtkComboBox           *combo_box = GTK_COMBO_BOX (widget);
5439   GtkComboBoxPrivate    *priv = combo_box->priv;
5440   gint                   font_size, arrow_size;
5441   PangoContext          *context;
5442   PangoFontMetrics      *metrics;
5443   const PangoFontDescription *font_desc;
5444   GtkWidget             *child;
5445   gint                   minimum_width = 0, natural_width = 0;
5446   gint                   child_min, child_nat;
5447   GtkStyleContext       *style_context;
5448   GtkStateFlags          state;
5449   GtkBorder              padding;
5450   gfloat                 arrow_scaling;
5451
5452   child = gtk_bin_get_child (GTK_BIN (widget));
5453
5454   /* common */
5455   gtk_widget_get_preferred_width (child, &child_min, &child_nat);
5456
5457   gtk_widget_style_get (GTK_WIDGET (widget),
5458                         "arrow-size", &arrow_size,
5459                         "arrow-scaling", &arrow_scaling,
5460                         NULL);
5461
5462   style_context = gtk_widget_get_style_context (widget);
5463   state = gtk_widget_get_state_flags (widget);
5464
5465   get_widget_padding_and_border (widget, &padding);
5466   font_desc = gtk_style_context_get_font (style_context, state);
5467
5468   context = gtk_widget_get_pango_context (GTK_WIDGET (widget));
5469   metrics = pango_context_get_metrics (context, font_desc,
5470                                        pango_context_get_language (context));
5471   font_size = PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
5472                             pango_font_metrics_get_descent (metrics));
5473   pango_font_metrics_unref (metrics);
5474
5475   arrow_size = MAX (arrow_size, font_size) * arrow_scaling;
5476
5477   gtk_widget_set_size_request (priv->arrow, arrow_size, arrow_size);
5478
5479   if (!priv->tree_view)
5480     {
5481       /* menu mode */
5482       if (priv->cell_view)
5483         {
5484           gint box_width;
5485           gint border_width, xpad;
5486           GtkBorder button_padding;
5487
5488           border_width = gtk_container_get_border_width (GTK_CONTAINER (combo_box));
5489           get_widget_padding_and_border (priv->button, &button_padding);
5490
5491           gtk_widget_get_preferred_width (priv->box, &box_width, NULL);
5492           xpad = 2 * border_width +
5493             button_padding.left + button_padding.right + padding.left + padding.right;
5494
5495           minimum_width  = child_min + box_width + xpad;
5496           natural_width  = child_nat + box_width + xpad;
5497         }
5498       else
5499         {
5500           gint but_width, but_nat_width;
5501
5502           gtk_widget_get_preferred_width (priv->button,
5503                                           &but_width, &but_nat_width);
5504
5505           minimum_width  = child_min + but_width;
5506           natural_width  = child_nat + but_nat_width;
5507         }
5508     }
5509   else
5510     {
5511       /* list mode */
5512       gint button_width, button_nat_width;
5513
5514       /* sample + frame */
5515       minimum_width = child_min;
5516       natural_width = child_nat;
5517
5518       if (priv->cell_view_frame)
5519         {
5520           if (priv->has_frame)
5521             {
5522               gint border_width, xpad;
5523               GtkBorder frame_padding;
5524
5525               border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
5526               get_widget_padding_and_border (priv->cell_view_frame, &frame_padding);
5527               xpad = (2 * border_width) + frame_padding.left + frame_padding.right;
5528
5529               minimum_width  += xpad;
5530               natural_width  += xpad;
5531             }
5532         }
5533
5534       /* the button */
5535       gtk_widget_get_preferred_width (priv->button,
5536                                       &button_width, &button_nat_width);
5537
5538       minimum_width += button_width;
5539       natural_width += button_nat_width;
5540     }
5541
5542   minimum_width += padding.left + padding.right;
5543   natural_width += padding.left + padding.right;
5544
5545   if (minimum_size)
5546     *minimum_size = minimum_width;
5547
5548   if (natural_size)
5549     *natural_size = natural_width;
5550 }
5551
5552 static void
5553 gtk_combo_box_get_preferred_height (GtkWidget *widget,
5554                                     gint      *minimum_size,
5555                                     gint      *natural_size)
5556 {
5557   gint min_width;
5558
5559   /* Combo box is height-for-width only
5560    * (so we always just reserve enough height for the minimum width) */
5561   GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, NULL);
5562   GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_width, minimum_size, natural_size);
5563 }
5564
5565 static void
5566 gtk_combo_box_get_preferred_width_for_height (GtkWidget *widget,
5567                                               gint       avail_size,
5568                                               gint      *minimum_size,
5569                                               gint      *natural_size)
5570 {
5571   /* Combo box is height-for-width only
5572    * (so we assume we always reserved enough height for the minimum width) */
5573   GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_size, natural_size);
5574 }
5575
5576
5577 static void
5578 gtk_combo_box_get_preferred_height_for_width (GtkWidget *widget,
5579                                               gint       avail_size,
5580                                               gint      *minimum_size,
5581                                               gint      *natural_size)
5582 {
5583   GtkComboBox           *combo_box = GTK_COMBO_BOX (widget);
5584   GtkComboBoxPrivate    *priv = combo_box->priv;
5585   gint                   min_height = 0, nat_height = 0;
5586   gint                   size;
5587   GtkWidget             *child;
5588   GtkBorder              padding;
5589
5590   child = gtk_bin_get_child (GTK_BIN (widget));
5591
5592   get_widget_padding_and_border (widget, &padding);
5593   size = avail_size;
5594
5595   if (!priv->tree_view)
5596     {
5597       /* menu mode */
5598       if (priv->cell_view)
5599         {
5600           /* calculate x/y padding and separator/arrow size */
5601           gint box_width, box_height;
5602           gint border_width, xpad, ypad;
5603           GtkBorder button_padding;
5604
5605           border_width = gtk_container_get_border_width (GTK_CONTAINER (combo_box));
5606           get_widget_padding_and_border (priv->button, &button_padding);
5607
5608           gtk_widget_get_preferred_width (priv->box, &box_width, NULL);
5609           gtk_widget_get_preferred_height_for_width (priv->box,
5610                                                      box_width, &box_height, NULL);
5611
5612           xpad = 2 * border_width +
5613             button_padding.left + button_padding.right;
5614           ypad = 2 * border_width +
5615             button_padding.top + button_padding.bottom;
5616
5617           size -= box_width + xpad;
5618
5619           /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5620            * and fitting the whole treemodel */
5621           gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5622
5623           min_height = MAX (min_height, box_height);
5624           nat_height = MAX (nat_height, box_height);
5625
5626           min_height += ypad;
5627           nat_height += ypad;
5628         }
5629       else
5630         {
5631           /* there is a custom child widget inside (no priv->cell_view) */
5632           gint but_width, but_height;
5633
5634           gtk_widget_get_preferred_width (priv->button, &but_width, NULL);
5635           gtk_widget_get_preferred_height_for_width (priv->button,
5636                                                      but_width, &but_height, NULL);
5637
5638           size -= but_width;
5639
5640           /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5641            * and fitting the whole treemodel */
5642           gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5643
5644           min_height = MAX (min_height, but_height);
5645           nat_height = MAX (nat_height, but_height);
5646         }
5647     }
5648   else
5649     {
5650       /* list mode */
5651       gint but_width, but_height;
5652       gint xpad = 0, ypad = 0;
5653
5654       gtk_widget_get_preferred_width (priv->button, &but_width, NULL);
5655       gtk_widget_get_preferred_height_for_width (priv->button,
5656                                                  but_width, &but_height, NULL);
5657
5658       if (priv->cell_view_frame && priv->has_frame)
5659         {
5660           GtkBorder frame_padding;
5661           gint border_width;
5662
5663           border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
5664           get_widget_padding_and_border (GTK_WIDGET (priv->cell_view_frame), &frame_padding);
5665
5666           xpad = (2 * border_width) + padding.left + frame_padding.right;
5667           ypad = (2 * border_width) + padding.top + frame_padding.bottom;
5668         }
5669
5670       size -= but_width;
5671       size -= xpad;
5672
5673       /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5674        * and fitting the whole treemodel */
5675       gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5676
5677       min_height = MAX (min_height, but_height);
5678       nat_height = MAX (nat_height, but_height);
5679
5680       min_height += ypad;
5681       nat_height += ypad;
5682     }
5683
5684   min_height += padding.top + padding.bottom;
5685   nat_height += padding.top + padding.bottom;
5686
5687   if (minimum_size)
5688     *minimum_size = min_height;
5689
5690   if (natural_size)
5691     *natural_size = nat_height;
5692 }
5693
5694 /**
5695  * gtk_combo_box_set_id_column:
5696  * @combo_box: A #GtkComboBox
5697  * @id_column: A column in @model to get string IDs for values from
5698  *
5699  * Sets the model column which @combo_box should use to get string IDs
5700  * for values from. The column @id_column in the model of @combo_box
5701  * must be of type %G_TYPE_STRING.
5702  *
5703  * Since: 3.0
5704  */
5705 void
5706 gtk_combo_box_set_id_column (GtkComboBox *combo_box,
5707                              gint         id_column)
5708 {
5709   GtkComboBoxPrivate *priv = combo_box->priv;
5710   GtkTreeModel *model;
5711
5712   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5713
5714   if (id_column != priv->id_column)
5715     {
5716       model = gtk_combo_box_get_model (combo_box);
5717
5718       g_return_if_fail (id_column >= 0);
5719       g_return_if_fail (model == NULL ||
5720                         id_column < gtk_tree_model_get_n_columns (model));
5721
5722       priv->id_column = id_column;
5723
5724       g_object_notify (G_OBJECT (combo_box), "id-column");
5725       g_object_notify (G_OBJECT (combo_box), "active-id");
5726     }
5727 }
5728
5729 /**
5730  * gtk_combo_box_get_id_column:
5731  * @combo_box: A #GtkComboBox
5732  *
5733  * Returns the column which @combo_box is using to get string IDs
5734  * for values from.
5735  *
5736  * Return value: A column in the data source model of @combo_box.
5737  *
5738  * Since: 3.0
5739  */
5740 gint
5741 gtk_combo_box_get_id_column (GtkComboBox *combo_box)
5742 {
5743   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
5744
5745   return combo_box->priv->id_column;
5746 }
5747
5748 /**
5749  * gtk_combo_box_get_active_id:
5750  * @combo_box: a #GtkComboBox
5751  *
5752  * Returns the ID of the active row of @combo_box.  This value is taken
5753  * from the active row and the column specified by the #GtkComboBox:id-column
5754  * property of @combo_box (see gtk_combo_box_set_id_column()).
5755  *
5756  * The returned value is an interned string which means that you can
5757  * compare the pointer by value to other interned strings and that you
5758  * must not free it.
5759  *
5760  * If the #GtkComboBox:id-column property of @combo_box is not set, or if
5761  * no row is active, or if the active row has a %NULL ID value, then %NULL
5762  * is returned.
5763  *
5764  * Return value: the ID of the active row, or %NULL
5765  *
5766  * Since: 3.0
5767  **/
5768 const gchar *
5769 gtk_combo_box_get_active_id (GtkComboBox *combo_box)
5770 {
5771   GtkTreeModel *model;
5772   GtkTreeIter iter;
5773   gint column;
5774
5775   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5776
5777   column = combo_box->priv->id_column;
5778
5779   if (column < 0)
5780     return NULL;
5781
5782   model = gtk_combo_box_get_model (combo_box);
5783   g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
5784                         G_TYPE_STRING, NULL);
5785
5786   if (gtk_combo_box_get_active_iter (combo_box, &iter))
5787     {
5788       const gchar *interned;
5789       gchar *id;
5790
5791       gtk_tree_model_get (model, &iter, column, &id, -1);
5792       interned = g_intern_string (id);
5793       g_free (id);
5794
5795       return interned;
5796     }
5797
5798   return NULL;
5799 }
5800
5801 /**
5802  * gtk_combo_box_set_active_id:
5803  * @combo_box: a #GtkComboBox
5804  * @active_id: (allow-none): the ID of the row to select, or %NULL
5805  *
5806  * Changes the active row of @combo_box to the one that has an ID equal to
5807  * @active_id, or unsets the active row if @active_id is %NULL.  Rows having
5808  * a %NULL ID string cannot be made active by this function.
5809  *
5810  * If the #GtkComboBox:id-column property of @combo_box is unset or if no
5811  * row has the given ID then the function does nothing and returns %FALSE.
5812  *
5813  * Returns: %TRUE if a row with a matching ID was found.  If a %NULL
5814  *          @active_id was given to unset the active row, the function
5815  *          always returns %TRUE.
5816  *
5817  * Since: 3.0
5818  **/
5819 gboolean
5820 gtk_combo_box_set_active_id (GtkComboBox *combo_box,
5821                              const gchar *active_id)
5822 {
5823   GtkTreeModel *model;
5824   GtkTreeIter iter;
5825   gboolean match = FALSE;
5826   gint column;
5827
5828   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5829
5830   if (active_id == NULL)
5831     {
5832       gtk_combo_box_set_active (combo_box, -1);
5833       return TRUE;  /* active row was successfully unset */
5834     }
5835
5836   column = combo_box->priv->id_column;
5837
5838   if (column < 0)
5839     return FALSE;
5840
5841   model = gtk_combo_box_get_model (combo_box);
5842   g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
5843                         G_TYPE_STRING, FALSE);
5844
5845   if (gtk_tree_model_get_iter_first (model, &iter))
5846     do {
5847       gchar *id;
5848
5849       gtk_tree_model_get (model, &iter, column, &id, -1);
5850       if (id != NULL)
5851         match = strcmp (id, active_id) == 0;
5852       g_free (id);
5853
5854       if (match)
5855         {
5856           gtk_combo_box_set_active_iter (combo_box, &iter);
5857           break;
5858         }
5859     } while (gtk_tree_model_iter_next (model, &iter));
5860
5861     return match;
5862 }