1 /* gtkcombo - combo widget for gtk+
2 * Copyright 1997 Paolo Molaro
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser 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.
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 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser 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.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
27 /* Do NOT, I repeat, NOT, copy any of the code in this file.
28 * The code here relies on all sorts of internal details of GTK+
31 #undef GTK_DISABLE_DEPRECATED
41 #include "gtkeventbox.h"
42 #include "gtkbutton.h"
43 #include "gtklistitem.h"
44 #include "gtkscrolledwindow.h"
46 #include "gtkwindow.h"
47 #include "gdk/gdkkeysyms.h"
52 const gchar *gtk_combo_string_key = "gtk-combo-string-value";
54 #define COMBO_LIST_MAX_HEIGHT (400)
55 #define EMPTY_LIST_HEIGHT (15)
59 PROP_ENABLE_ARROW_KEYS,
60 PROP_ENABLE_ARROWS_ALWAYS,
66 static void gtk_combo_class_init (GtkComboClass *klass);
67 static void gtk_combo_init (GtkCombo *combo);
68 static void gtk_combo_realize (GtkWidget *widget);
69 static void gtk_combo_unrealize (GtkWidget *widget);
70 static void gtk_combo_destroy (GtkObject *combo);
71 static GtkListItem *gtk_combo_find (GtkCombo *combo);
72 static gchar * gtk_combo_func (GtkListItem *li);
73 static gint gtk_combo_focus_idle (GtkCombo *combo);
74 static gint gtk_combo_entry_focus_out (GtkEntry *entry,
77 static void gtk_combo_get_pos (GtkCombo *combo,
82 static void gtk_combo_popup_list (GtkCombo *combo);
83 static void gtk_combo_popdown_list (GtkCombo *combo);
85 static void gtk_combo_activate (GtkWidget *widget,
87 static gboolean gtk_combo_popup_button_press (GtkWidget *button,
88 GdkEventButton *event,
90 static gboolean gtk_combo_popup_button_leave (GtkWidget *button,
91 GdkEventCrossing *event,
93 static void gtk_combo_update_entry (GtkCombo *combo);
94 static void gtk_combo_update_list (GtkEntry *entry,
96 static gint gtk_combo_button_press (GtkWidget *widget,
99 static void gtk_combo_button_event_after (GtkWidget *widget,
102 static gint gtk_combo_list_enter (GtkWidget *widget,
103 GdkEventCrossing *event,
105 static gint gtk_combo_list_key_press (GtkWidget *widget,
108 static gint gtk_combo_entry_key_press (GtkEntry *widget,
111 static gint gtk_combo_window_key_press (GtkWidget *window,
114 static void gtk_combo_size_allocate (GtkWidget *widget,
115 GtkAllocation *allocation);
116 static void gtk_combo_set_property (GObject *object,
120 static void gtk_combo_get_property (GObject *object,
124 static GtkHBoxClass *parent_class = NULL;
127 gtk_combo_class_init (GtkComboClass * klass)
129 GObjectClass *gobject_class;
130 GtkObjectClass *oclass;
131 GtkWidgetClass *widget_class;
133 gobject_class = (GObjectClass *) klass;
134 oclass = (GtkObjectClass *) klass;
135 widget_class = (GtkWidgetClass *) klass;
137 parent_class = g_type_class_peek_parent (klass);
139 gobject_class->set_property = gtk_combo_set_property;
140 gobject_class->get_property = gtk_combo_get_property;
142 g_object_class_install_property (gobject_class,
143 PROP_ENABLE_ARROW_KEYS,
144 g_param_spec_boolean ("enable_arrow_keys",
145 P_("Enable arrow keys"),
146 P_("Whether the arrow keys move through the list of items"),
148 G_PARAM_READABLE | G_PARAM_WRITABLE));
149 g_object_class_install_property (gobject_class,
150 PROP_ENABLE_ARROWS_ALWAYS,
151 g_param_spec_boolean ("enable_arrows_always",
152 P_("Always enable arrows"),
153 P_("Obsolete property, ignored"),
155 G_PARAM_READABLE | G_PARAM_WRITABLE));
156 g_object_class_install_property (gobject_class,
158 g_param_spec_boolean ("case_sensitive",
159 P_("Case sensitive"),
160 P_("Whether list item matching is case sensitive"),
162 G_PARAM_READABLE | G_PARAM_WRITABLE));
164 g_object_class_install_property (gobject_class,
166 g_param_spec_boolean ("allow_empty",
168 P_("Whether an empty value may be entered in this field"),
170 G_PARAM_READABLE | G_PARAM_WRITABLE));
172 g_object_class_install_property (gobject_class,
174 g_param_spec_boolean ("value_in_list",
176 P_("Whether entered values must already be present in the list"),
178 G_PARAM_READABLE | G_PARAM_WRITABLE));
181 oclass->destroy = gtk_combo_destroy;
183 widget_class->size_allocate = gtk_combo_size_allocate;
184 widget_class->realize = gtk_combo_realize;
185 widget_class->unrealize = gtk_combo_unrealize;
189 gtk_combo_destroy (GtkObject *object)
191 GtkCombo *combo = GTK_COMBO (object);
195 gtk_widget_destroy (combo->popwin);
196 g_object_unref (combo->popwin);
197 combo->popwin = NULL;
200 GTK_OBJECT_CLASS (parent_class)->destroy (object);
204 gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
207 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
210 if ((event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab) &&
211 state == GDK_MOD1_MASK)
213 GtkEditable *editable = GTK_EDITABLE (entry);
216 gchar* nprefix = NULL;
219 if ( !GTK_LIST (combo->list)->children )
222 cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func);
223 g_completion_add_items (cmpl, GTK_LIST (combo->list)->children);
225 pos = gtk_editable_get_position (editable);
226 prefix = gtk_editable_get_chars (editable, 0, pos);
228 g_completion_complete_utf8 (cmpl, prefix, &nprefix);
230 if (nprefix && strlen (nprefix) > strlen (prefix))
232 gtk_editable_insert_text (editable, g_utf8_offset_to_pointer (nprefix, pos),
233 strlen (nprefix) - strlen (prefix), &pos);
234 gtk_editable_set_position (editable, pos);
240 g_completion_free (cmpl);
245 if ((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) &&
246 state == GDK_MOD1_MASK)
248 gtk_combo_activate (NULL, combo);
252 if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
255 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
256 li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
258 if (((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) && state == 0) ||
259 ((event->keyval == 'p' || event->keyval == 'P') && state == GDK_MOD1_MASK))
262 li = g_list_last (GTK_LIST (combo->list)->children);
268 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
269 gtk_combo_update_entry (combo);
274 if (((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) && state == 0) ||
275 ((event->keyval == 'n' || event->keyval == 'N') && state == GDK_MOD1_MASK))
278 li = GTK_LIST (combo->list)->children;
283 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
284 gtk_combo_update_entry (combo);
293 gtk_combo_window_key_press (GtkWidget *window,
297 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
299 if ((event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) &&
302 gtk_combo_popdown_list (combo);
303 gtk_combo_update_entry (combo);
307 else if ((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) &&
308 state == GDK_MOD1_MASK)
310 gtk_combo_popdown_list (combo);
314 else if ((event->keyval == GDK_space || event->keyval == GDK_KP_Space) &&
317 gtk_combo_update_entry (combo);
324 gtk_combo_find (GtkCombo * combo)
327 GtkListItem *found = NULL;
332 text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
333 if (combo->case_sensitive)
334 compare_text = (gchar *)text;
336 compare_text = g_utf8_casefold (text, -1);
338 for (clist = GTK_LIST (combo->list)->children;
342 ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
346 if (!combo->case_sensitive)
347 ltext = g_utf8_casefold (ltext, -1);
349 if (strcmp (ltext, compare_text) == 0)
352 if (!combo->case_sensitive)
356 if (!combo->case_sensitive)
357 g_free (compare_text);
363 gtk_combo_func (GtkListItem * li)
368 ltext = g_object_get_data (G_OBJECT (li), gtk_combo_string_key);
371 label = GTK_BIN (li)->child;
372 if (!label || !GTK_IS_LABEL (label))
374 ltext = (gchar *) gtk_label_get_text (GTK_LABEL (label));
380 gtk_combo_focus_idle (GtkCombo * combo)
384 GDK_THREADS_ENTER ();
385 gtk_widget_grab_focus (combo->entry);
386 GDK_THREADS_LEAVE ();
392 gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
395 if (combo->value_in_list && !gtk_combo_find (combo))
399 /* gdk_beep(); *//* this can be annoying */
400 if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
403 printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
405 gtk_grab_add (GTK_WIDGET (combo));
406 /* this is needed because if we call gtk_widget_grab_focus()
407 it isn't guaranteed it's the *last* call before the main-loop,
408 so the focus can be lost anyway...
409 the signal_stop_emission doesn't seem to work either...
411 focus_idle = g_idle_source_new ();
412 g_source_set_closure (focus_idle,
413 g_cclosure_new_object (G_CALLBACK (gtk_combo_focus_idle),
415 g_source_attach (focus_idle, NULL);
417 /*g_signal_stop_emission_by_name (entry, "focus_out_event"); */
424 gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
428 GtkScrolledWindow *popup;
431 GtkRequisition list_requisition;
432 gboolean show_hscroll = FALSE;
433 gboolean show_vscroll = FALSE;
440 gint scrollbar_spacing;
442 widget = GTK_WIDGET (combo);
443 popup = GTK_SCROLLED_WINDOW (combo->popup);
444 popwin = GTK_BIN (combo->popwin);
446 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (popup);
448 gdk_window_get_origin (combo->entry->window, x, y);
449 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
450 *x -= widget->allocation.width - combo->entry->allocation.width;
451 real_height = MIN (combo->entry->requisition.height,
452 combo->entry->allocation.height);
454 avail_height = gdk_screen_get_height (gtk_widget_get_screen (widget)) - *y;
456 gtk_widget_size_request (combo->list, &list_requisition);
457 min_height = MIN (list_requisition.height,
458 popup->vscrollbar->requisition.height);
459 if (!GTK_LIST (combo->list)->children)
460 list_requisition.height += EMPTY_LIST_HEIGHT;
462 alloc_width = (widget->allocation.width -
463 2 * popwin->child->style->xthickness -
464 2 * GTK_CONTAINER (popwin->child)->border_width -
465 2 * GTK_CONTAINER (combo->popup)->border_width -
466 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width -
467 2 * GTK_BIN (popup)->child->style->xthickness);
469 work_height = (2 * popwin->child->style->ythickness +
470 2 * GTK_CONTAINER (popwin->child)->border_width +
471 2 * GTK_CONTAINER (combo->popup)->border_width +
472 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
473 2 * GTK_BIN (popup)->child->style->ythickness);
477 old_width = alloc_width;
478 old_height = work_height;
481 alloc_width < list_requisition.width)
483 GtkRequisition requisition;
485 gtk_widget_size_request (popup->hscrollbar, &requisition);
486 work_height += (requisition.height + scrollbar_spacing);
491 work_height + list_requisition.height > avail_height)
493 GtkRequisition requisition;
495 if (work_height + min_height > avail_height &&
496 *y - real_height > avail_height)
498 *y -= (work_height + list_requisition.height + real_height);
501 gtk_widget_size_request (popup->hscrollbar, &requisition);
502 alloc_width -= (requisition.width + scrollbar_spacing);
505 } while (old_width != alloc_width || old_height != work_height);
507 *width = widget->allocation.width;
509 *height = avail_height;
511 *height = work_height + list_requisition.height;
518 gtk_combo_popup_list (GtkCombo *combo)
522 gint height, width, x, y;
523 gint old_width, old_height;
525 old_width = combo->popwin->allocation.width;
526 old_height = combo->popwin->allocation.height;
528 gtk_combo_get_pos (combo, &x, &y, &height, &width);
530 /* workaround for gtk_scrolled_window_size_allocate bug */
531 if (old_width != width || old_height != height)
533 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
534 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
537 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
539 /* We need to make sure some child of combo->popwin
540 * is focused to disable GtkWindow's automatic
541 * "focus-the-first-item" code. If there is no selected
542 * child, we focus the list itself with some hackery.
544 list = GTK_LIST (combo->list);
548 gtk_widget_grab_focus (list->selection->data);
552 GTK_WIDGET_SET_FLAGS (list, GTK_CAN_FOCUS);
553 gtk_widget_grab_focus (combo->list);
554 GTK_LIST (combo->list)->last_focus_child = NULL;
555 GTK_WIDGET_UNSET_FLAGS (list, GTK_CAN_FOCUS);
558 gtk_window_move (GTK_WINDOW (combo->popwin), x, y);
560 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo));
562 if (GTK_IS_WINDOW (toplevel))
564 gtk_window_group_add_window (_gtk_window_get_group (GTK_WINDOW (toplevel)),
565 GTK_WINDOW (combo->popwin));
568 gtk_widget_set_size_request (combo->popwin, width, height);
569 gtk_widget_show (combo->popwin);
571 gtk_widget_grab_focus (combo->popwin);
575 gtk_combo_popdown_list (GtkCombo *combo)
577 combo->current_button = 0;
579 if (GTK_BUTTON (combo->button)->in_button)
581 GTK_BUTTON (combo->button)->in_button = FALSE;
582 gtk_button_released (GTK_BUTTON (combo->button));
585 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
587 gtk_grab_remove (combo->popwin);
588 gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
589 gtk_get_current_event_time ());
590 gdk_display_keyboard_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
591 gtk_get_current_event_time ());
594 gtk_widget_hide (combo->popwin);
596 gtk_window_group_add_window (_gtk_window_get_group (NULL), GTK_WINDOW (combo->popwin));
600 popup_grab_on_window (GdkWindow *window,
601 guint32 activate_time)
603 if ((gdk_pointer_grab (window, TRUE,
604 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
605 GDK_POINTER_MOTION_MASK,
606 NULL, NULL, activate_time) == 0))
608 if (gdk_keyboard_grab (window, TRUE,
613 gdk_display_pointer_ungrab (gdk_drawable_get_display (window),
623 gtk_combo_activate (GtkWidget *widget,
626 if (!combo->button->window ||
627 !popup_grab_on_window (combo->button->window,
628 gtk_get_current_event_time ()))
631 gtk_combo_popup_list (combo);
633 /* This must succeed since we already have the grab */
634 popup_grab_on_window (combo->popwin->window,
635 gtk_get_current_event_time ());
637 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
638 gtk_widget_grab_focus (combo->entry);
640 gtk_grab_add (combo->popwin);
644 gtk_combo_popup_button_press (GtkWidget *button,
645 GdkEventButton *event,
648 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
649 gtk_widget_grab_focus (combo->entry);
651 if (event->button != 1)
654 if (!popup_grab_on_window (combo->button->window,
655 gtk_get_current_event_time ()))
658 combo->current_button = event->button;
660 gtk_combo_popup_list (combo);
662 /* This must succeed since we already have the grab */
663 popup_grab_on_window (combo->popwin->window,
664 gtk_get_current_event_time ());
666 gtk_button_pressed (GTK_BUTTON (button));
668 gtk_grab_add (combo->popwin);
674 gtk_combo_popup_button_leave (GtkWidget *button,
675 GdkEventCrossing *event,
678 /* The idea here is that we want to keep the button down if the
679 * popup is popped up.
681 return combo->current_button != 0;
685 gtk_combo_update_entry (GtkCombo * combo)
687 GtkList *list = GTK_LIST (combo->list);
690 g_signal_handler_block (list, combo->list_change_id);
693 text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
696 gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
698 g_signal_handler_unblock (list, combo->list_change_id);
702 gtk_combo_selection_changed (GtkList *list,
705 if (!GTK_WIDGET_VISIBLE (combo->popwin))
706 gtk_combo_update_entry (combo);
710 gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
712 GtkList *list = GTK_LIST (combo->list);
713 GList *slist = list->selection;
716 gtk_grab_remove (GTK_WIDGET (combo));
718 g_signal_handler_block (entry, combo->entry_change_id);
719 if (slist && slist->data)
720 gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
721 li = gtk_combo_find (combo);
723 gtk_list_select_child (list, GTK_WIDGET (li));
724 g_signal_handler_unblock (entry, combo->entry_change_id);
728 gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
732 child = gtk_get_event_widget (event);
734 /* We don't ask for button press events on the grab widget, so
735 * if an event is reported directly to the grab widget, it must
736 * be on a window outside the application (and thus we remove
737 * the popup window). Otherwise, we check if the widget is a child
738 * of the grab widget, and only remove the popup window if it
747 child = child->parent;
751 gtk_combo_popdown_list (combo);
757 is_within (GtkWidget *widget,
760 return widget == ancestor || gtk_widget_is_ancestor (widget, ancestor);
764 gtk_combo_button_event_after (GtkWidget *widget,
770 if (event->type != GDK_BUTTON_RELEASE)
773 child = gtk_get_event_widget ((GdkEvent*) event);
775 if ((combo->current_button != 0) && (event->button.button == 1))
777 /* This was the initial button press */
779 combo->current_button = 0;
781 /* Check to see if we released inside the button */
782 if (child && is_within (child, combo->button))
784 gtk_grab_add (combo->popwin);
785 gdk_pointer_grab (combo->popwin->window, TRUE,
786 GDK_BUTTON_PRESS_MASK |
787 GDK_BUTTON_RELEASE_MASK |
788 GDK_POINTER_MOTION_MASK,
789 NULL, NULL, GDK_CURRENT_TIME);
794 if (is_within (child, combo->list))
795 gtk_combo_update_entry (combo);
797 gtk_combo_popdown_list (combo);
802 find_child_foreach (GtkWidget *widget,
805 GdkEventButton *event = data;
809 if (event->x >= widget->allocation.x &&
810 event->x < widget->allocation.x + widget->allocation.width &&
811 event->y >= widget->allocation.y &&
812 event->y < widget->allocation.y + widget->allocation.height)
813 event->window = g_object_ref (widget->window);
818 find_child_window (GtkContainer *container,
819 GdkEventButton *event)
821 gtk_container_foreach (container, find_child_foreach, event);
825 gtk_combo_list_enter (GtkWidget *widget,
826 GdkEventCrossing *event,
829 GtkWidget *event_widget;
831 event_widget = gtk_get_event_widget ((GdkEvent*) event);
833 if ((event_widget == combo->list) &&
834 (combo->current_button != 0) &&
835 (!GTK_WIDGET_HAS_GRAB (combo->list)))
837 GdkEvent *tmp_event = gdk_event_new (GDK_BUTTON_PRESS);
839 GdkModifierType mask;
841 gtk_grab_remove (combo->popwin);
843 /* Transfer the grab over to the list by synthesizing
844 * a button press event
846 gdk_window_get_pointer (combo->list->window, &x, &y, &mask);
848 tmp_event->button.send_event = TRUE;
849 tmp_event->button.time = GDK_CURRENT_TIME; /* bad */
850 tmp_event->button.x = x;
851 tmp_event->button.y = y;
852 /* We leave all the XInput fields unfilled here, in the expectation
853 * that GtkList doesn't care.
855 tmp_event->button.button = combo->current_button;
856 tmp_event->button.state = mask;
858 find_child_window (GTK_CONTAINER (combo->list), &tmp_event->button);
859 if (!tmp_event->button.window)
863 if (GTK_LIST (combo->list)->children)
864 child = GTK_LIST (combo->list)->children->data;
868 tmp_event->button.window = g_object_ref (child->window);
871 gtk_widget_event (combo->list, tmp_event);
872 gdk_event_free (tmp_event);
879 gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
881 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
883 if (event->keyval == GDK_Escape && state == 0)
885 if (GTK_WIDGET_HAS_GRAB (combo->list))
886 gtk_list_end_drag_selection (GTK_LIST (combo->list));
888 gtk_combo_popdown_list (combo);
896 combo_event_box_realize (GtkWidget *widget)
898 GdkCursor *cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
900 gdk_window_set_cursor (widget->window, cursor);
901 gdk_cursor_unref (cursor);
905 gtk_combo_init (GtkCombo * combo)
909 GtkWidget *event_box;
911 combo->case_sensitive = FALSE;
912 combo->value_in_list = FALSE;
913 combo->ok_if_empty = TRUE;
914 combo->use_arrows = TRUE;
915 combo->use_arrows_always = FALSE;
916 combo->entry = gtk_entry_new ();
917 combo->button = gtk_button_new ();
918 combo->current_button = 0;
919 arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
920 gtk_widget_show (arrow);
921 gtk_container_add (GTK_CONTAINER (combo->button), arrow);
922 gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
923 gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
924 GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS);
925 gtk_widget_show (combo->entry);
926 gtk_widget_show (combo->button);
927 combo->entry_change_id = g_signal_connect (combo->entry, "changed",
928 G_CALLBACK (gtk_combo_update_list),
930 g_signal_connect_after (combo->entry, "key_press_event",
931 G_CALLBACK (gtk_combo_entry_key_press), combo);
932 g_signal_connect_after (combo->entry, "focus_out_event",
933 G_CALLBACK (gtk_combo_entry_focus_out), combo);
934 combo->activate_id = g_signal_connect (combo->entry, "activate",
935 G_CALLBACK (gtk_combo_activate),
937 g_signal_connect (combo->button, "button_press_event",
938 G_CALLBACK (gtk_combo_popup_button_press), combo);
939 g_signal_connect (combo->button, "leave_notify_event",
940 G_CALLBACK (gtk_combo_popup_button_leave), combo);
942 combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
943 g_object_ref (combo->popwin);
944 gtk_window_set_resizable (GTK_WINDOW (combo->popwin), FALSE);
946 g_signal_connect (combo->popwin, "key_press_event",
947 G_CALLBACK (gtk_combo_window_key_press), combo);
949 gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK);
951 event_box = gtk_event_box_new ();
952 gtk_container_add (GTK_CONTAINER (combo->popwin), event_box);
953 g_signal_connect (event_box, "realize",
954 G_CALLBACK (combo_event_box_realize), NULL);
955 gtk_widget_show (event_box);
958 frame = gtk_frame_new (NULL);
959 gtk_container_add (GTK_CONTAINER (event_box), frame);
960 gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
961 gtk_widget_show (frame);
963 combo->popup = gtk_scrolled_window_new (NULL, NULL);
964 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
965 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
966 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS);
967 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS);
968 gtk_container_add (GTK_CONTAINER (frame), combo->popup);
969 gtk_widget_show (combo->popup);
971 combo->list = gtk_list_new ();
972 /* We'll use enter notify events to figure out when to transfer
973 * the grab to the list
975 gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK);
977 gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
978 gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list);
979 gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list),
980 gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
981 gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list),
982 gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
983 gtk_widget_show (combo->list);
985 combo->list_change_id = g_signal_connect (combo->list, "selection_changed",
986 G_CALLBACK (gtk_combo_selection_changed), combo);
988 g_signal_connect (combo->popwin, "key_press_event",
989 G_CALLBACK (gtk_combo_list_key_press), combo);
990 g_signal_connect (combo->popwin, "button_press_event",
991 G_CALLBACK (gtk_combo_button_press), combo);
993 g_signal_connect (combo->popwin, "event_after",
994 G_CALLBACK (gtk_combo_button_event_after), combo);
995 g_signal_connect (combo->list, "event_after",
996 G_CALLBACK (gtk_combo_button_event_after), combo);
998 g_signal_connect (combo->list, "enter_notify_event",
999 G_CALLBACK (gtk_combo_list_enter), combo);
1003 gtk_combo_realize (GtkWidget *widget)
1005 GtkCombo *combo = GTK_COMBO (widget);
1007 gtk_window_set_screen (GTK_WINDOW (combo->popwin),
1008 gtk_widget_get_screen (widget));
1010 GTK_WIDGET_CLASS( parent_class )->realize (widget);
1014 gtk_combo_unrealize (GtkWidget *widget)
1016 GtkCombo *combo = GTK_COMBO (widget);
1018 gtk_combo_popdown_list (combo);
1019 gtk_widget_unrealize (combo->popwin);
1021 GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
1025 gtk_combo_get_type (void)
1027 static GType combo_type = 0;
1031 static const GTypeInfo combo_info =
1033 sizeof (GtkComboClass),
1034 NULL, /* base_init */
1035 NULL, /* base_finalize */
1036 (GClassInitFunc) gtk_combo_class_init,
1037 NULL, /* class_finalize */
1038 NULL, /* class_data */
1040 0, /* n_preallocs */
1041 (GInstanceInitFunc) gtk_combo_init,
1044 combo_type = g_type_register_static (GTK_TYPE_HBOX, "GtkCombo",
1052 gtk_combo_new (void)
1054 return g_object_new (GTK_TYPE_COMBO, NULL);
1058 gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty)
1060 g_return_if_fail (GTK_IS_COMBO (combo));
1062 ok_if_empty = ok_if_empty != FALSE;
1064 g_object_freeze_notify (G_OBJECT (combo));
1065 if (combo->value_in_list != val)
1067 combo->value_in_list = val;
1068 g_object_notify (G_OBJECT (combo), "value_in_list");
1070 if (combo->ok_if_empty != ok_if_empty)
1072 combo->ok_if_empty = ok_if_empty;
1073 g_object_notify (G_OBJECT (combo), "allow_empty");
1075 g_object_thaw_notify (G_OBJECT (combo));
1079 gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val)
1081 g_return_if_fail (GTK_IS_COMBO (combo));
1084 if (combo->case_sensitive != val)
1086 combo->case_sensitive = val;
1087 g_object_notify (G_OBJECT (combo), "case_sensitive");
1092 gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val)
1094 g_return_if_fail (GTK_IS_COMBO (combo));
1097 if (combo->use_arrows != val)
1099 combo->use_arrows = val;
1100 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1105 gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val)
1107 g_return_if_fail (GTK_IS_COMBO (combo));
1110 if (combo->use_arrows_always != val)
1112 g_object_freeze_notify (G_OBJECT (combo));
1113 combo->use_arrows_always = val;
1114 g_object_notify (G_OBJECT (combo), "enable_arrows_always");
1116 if (combo->use_arrows != TRUE)
1118 combo->use_arrows = TRUE;
1119 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1121 g_object_thaw_notify (G_OBJECT (combo));
1126 gtk_combo_set_popdown_strings (GtkCombo *combo,
1132 g_return_if_fail (GTK_IS_COMBO (combo));
1134 gtk_combo_popdown_list (combo);
1136 gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
1140 li = gtk_list_item_new_with_label ((gchar *) list->data);
1141 gtk_widget_show (li);
1142 gtk_container_add (GTK_CONTAINER (combo->list), li);
1148 gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
1150 g_return_if_fail (GTK_IS_COMBO (combo));
1151 g_return_if_fail (item != NULL);
1153 g_object_set_data_full (G_OBJECT (item), gtk_combo_string_key,
1154 g_strdup (item_value), g_free);
1158 gtk_combo_size_allocate (GtkWidget *widget,
1159 GtkAllocation *allocation)
1163 g_return_if_fail (GTK_IS_COMBO (widget));
1164 g_return_if_fail (allocation != NULL);
1166 GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
1168 combo = GTK_COMBO (widget);
1170 if (combo->entry->allocation.height > combo->entry->requisition.height)
1172 GtkAllocation button_allocation;
1174 button_allocation = combo->button->allocation;
1175 button_allocation.height = combo->entry->requisition.height;
1176 button_allocation.y = combo->entry->allocation.y +
1177 (combo->entry->allocation.height - combo->entry->requisition.height)
1179 gtk_widget_size_allocate (combo->button, &button_allocation);
1184 gtk_combo_disable_activate (GtkCombo* combo)
1186 g_return_if_fail (GTK_IS_COMBO (combo));
1188 if ( combo->activate_id ) {
1189 g_signal_handler_disconnect (combo->entry, combo->activate_id);
1190 combo->activate_id = 0;
1195 gtk_combo_set_property (GObject *object,
1197 const GValue *value,
1200 GtkCombo *combo = GTK_COMBO (object);
1204 case PROP_ENABLE_ARROW_KEYS:
1205 gtk_combo_set_use_arrows (combo, g_value_get_boolean (value));
1207 case PROP_ENABLE_ARROWS_ALWAYS:
1208 gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value));
1210 case PROP_CASE_SENSITIVE:
1211 gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value));
1213 case PROP_ALLOW_EMPTY:
1214 combo->ok_if_empty = g_value_get_boolean (value);
1216 case PROP_VALUE_IN_LIST:
1217 combo->value_in_list = g_value_get_boolean (value);
1220 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1227 gtk_combo_get_property (GObject *object,
1232 GtkCombo *combo = GTK_COMBO (object);
1236 case PROP_ENABLE_ARROW_KEYS:
1237 g_value_set_boolean (value, combo->use_arrows);
1239 case PROP_ENABLE_ARROWS_ALWAYS:
1240 g_value_set_boolean (value, combo->use_arrows_always);
1242 case PROP_CASE_SENSITIVE:
1243 g_value_set_boolean (value, combo->case_sensitive);
1245 case PROP_ALLOW_EMPTY:
1246 g_value_set_boolean (value, combo->ok_if_empty);
1248 case PROP_VALUE_IN_LIST:
1249 g_value_set_boolean (value, combo->value_in_list);
1252 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);