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
40 #include "gtkeventbox.h"
41 #include "gtkbutton.h"
42 #include "gtklistitem.h"
43 #include "gtkscrolledwindow.h"
45 #include "gtkwindow.h"
46 #include "gdk/gdkkeysyms.h"
49 #include "gtkprivate.h"
53 const gchar gtk_combo_string_key[] = "gtk-combo-string-value";
55 #define COMBO_LIST_MAX_HEIGHT (400)
56 #define EMPTY_LIST_HEIGHT (15)
60 PROP_ENABLE_ARROW_KEYS,
61 PROP_ENABLE_ARROWS_ALWAYS,
67 static void gtk_combo_class_init (GtkComboClass *klass);
68 static void gtk_combo_init (GtkCombo *combo);
69 static void gtk_combo_realize (GtkWidget *widget);
70 static void gtk_combo_unrealize (GtkWidget *widget);
71 static void gtk_combo_destroy (GtkObject *combo);
72 static GtkListItem *gtk_combo_find (GtkCombo *combo);
73 static gchar * gtk_combo_func (GtkListItem *li);
74 static gint gtk_combo_focus_idle (GtkCombo *combo);
75 static gint gtk_combo_entry_focus_out (GtkEntry *entry,
78 static void gtk_combo_get_pos (GtkCombo *combo,
83 static void gtk_combo_popup_list (GtkCombo *combo);
84 static void gtk_combo_popdown_list (GtkCombo *combo);
86 static void gtk_combo_activate (GtkWidget *widget,
88 static gboolean gtk_combo_popup_button_press (GtkWidget *button,
89 GdkEventButton *event,
91 static gboolean gtk_combo_popup_button_leave (GtkWidget *button,
92 GdkEventCrossing *event,
94 static void gtk_combo_update_entry (GtkCombo *combo);
95 static void gtk_combo_update_list (GtkEntry *entry,
97 static gint gtk_combo_button_press (GtkWidget *widget,
100 static void gtk_combo_button_event_after (GtkWidget *widget,
103 static gint gtk_combo_list_enter (GtkWidget *widget,
104 GdkEventCrossing *event,
106 static gint gtk_combo_list_key_press (GtkWidget *widget,
109 static gint gtk_combo_entry_key_press (GtkEntry *widget,
112 static gint gtk_combo_window_key_press (GtkWidget *window,
115 static void gtk_combo_size_allocate (GtkWidget *widget,
116 GtkAllocation *allocation);
117 static void gtk_combo_set_property (GObject *object,
121 static void gtk_combo_get_property (GObject *object,
125 static GtkHBoxClass *parent_class = NULL;
128 gtk_combo_class_init (GtkComboClass * klass)
130 GObjectClass *gobject_class;
131 GtkObjectClass *oclass;
132 GtkWidgetClass *widget_class;
134 gobject_class = (GObjectClass *) klass;
135 oclass = (GtkObjectClass *) klass;
136 widget_class = (GtkWidgetClass *) klass;
138 parent_class = g_type_class_peek_parent (klass);
140 gobject_class->set_property = gtk_combo_set_property;
141 gobject_class->get_property = gtk_combo_get_property;
143 g_object_class_install_property (gobject_class,
144 PROP_ENABLE_ARROW_KEYS,
145 g_param_spec_boolean ("enable-arrow-keys",
146 P_("Enable arrow keys"),
147 P_("Whether the arrow keys move through the list of items"),
149 GTK_PARAM_READWRITE));
150 g_object_class_install_property (gobject_class,
151 PROP_ENABLE_ARROWS_ALWAYS,
152 g_param_spec_boolean ("enable-arrows-always",
153 P_("Always enable arrows"),
154 P_("Obsolete property, ignored"),
156 GTK_PARAM_READWRITE));
157 g_object_class_install_property (gobject_class,
159 g_param_spec_boolean ("case-sensitive",
160 P_("Case sensitive"),
161 P_("Whether list item matching is case sensitive"),
163 GTK_PARAM_READWRITE));
165 g_object_class_install_property (gobject_class,
167 g_param_spec_boolean ("allow-empty",
169 P_("Whether an empty value may be entered in this field"),
171 GTK_PARAM_READWRITE));
173 g_object_class_install_property (gobject_class,
175 g_param_spec_boolean ("value-in-list",
177 P_("Whether entered values must already be present in the list"),
179 GTK_PARAM_READWRITE));
182 oclass->destroy = gtk_combo_destroy;
184 widget_class->size_allocate = gtk_combo_size_allocate;
185 widget_class->realize = gtk_combo_realize;
186 widget_class->unrealize = gtk_combo_unrealize;
190 gtk_combo_destroy (GtkObject *object)
192 GtkCombo *combo = GTK_COMBO (object);
196 gtk_widget_destroy (combo->popwin);
197 g_object_unref (combo->popwin);
198 combo->popwin = NULL;
201 GTK_OBJECT_CLASS (parent_class)->destroy (object);
205 gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
208 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
211 if ((event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab) &&
212 state == GDK_MOD1_MASK)
214 GtkEditable *editable = GTK_EDITABLE (entry);
217 gchar* nprefix = NULL;
220 if ( !GTK_LIST (combo->list)->children )
223 cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func);
224 g_completion_add_items (cmpl, GTK_LIST (combo->list)->children);
226 pos = gtk_editable_get_position (editable);
227 prefix = gtk_editable_get_chars (editable, 0, pos);
229 g_completion_complete_utf8 (cmpl, prefix, &nprefix);
231 if (nprefix && strlen (nprefix) > strlen (prefix))
233 gtk_editable_insert_text (editable, g_utf8_offset_to_pointer (nprefix, pos),
234 strlen (nprefix) - strlen (prefix), &pos);
235 gtk_editable_set_position (editable, pos);
241 g_completion_free (cmpl);
246 if ((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) &&
247 state == GDK_MOD1_MASK)
249 gtk_combo_activate (NULL, combo);
253 if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
256 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
257 li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
259 if (((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) && state == 0) ||
260 ((event->keyval == 'p' || event->keyval == 'P') && state == GDK_MOD1_MASK))
263 li = g_list_last (GTK_LIST (combo->list)->children);
269 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
270 gtk_combo_update_entry (combo);
275 if (((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) && state == 0) ||
276 ((event->keyval == 'n' || event->keyval == 'N') && state == GDK_MOD1_MASK))
279 li = GTK_LIST (combo->list)->children;
284 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
285 gtk_combo_update_entry (combo);
294 gtk_combo_window_key_press (GtkWidget *window,
298 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
300 if ((event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) &&
303 gtk_combo_popdown_list (combo);
304 gtk_combo_update_entry (combo);
308 else if ((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) &&
309 state == GDK_MOD1_MASK)
311 gtk_combo_popdown_list (combo);
315 else if ((event->keyval == GDK_space || event->keyval == GDK_KP_Space) &&
318 gtk_combo_update_entry (combo);
325 gtk_combo_find (GtkCombo * combo)
328 GtkListItem *found = NULL;
333 text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
334 if (combo->case_sensitive)
335 compare_text = (gchar *)text;
337 compare_text = g_utf8_casefold (text, -1);
339 for (clist = GTK_LIST (combo->list)->children;
343 ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
347 if (!combo->case_sensitive)
348 ltext = g_utf8_casefold (ltext, -1);
350 if (strcmp (ltext, compare_text) == 0)
353 if (!combo->case_sensitive)
357 if (!combo->case_sensitive)
358 g_free (compare_text);
364 gtk_combo_func (GtkListItem * li)
369 ltext = g_object_get_data (G_OBJECT (li), I_(gtk_combo_string_key));
372 label = GTK_BIN (li)->child;
373 if (!label || !GTK_IS_LABEL (label))
375 ltext = (gchar *) gtk_label_get_text (GTK_LABEL (label));
381 gtk_combo_focus_idle (GtkCombo * combo)
385 GDK_THREADS_ENTER ();
386 gtk_widget_grab_focus (combo->entry);
387 GDK_THREADS_LEAVE ();
393 gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
396 if (combo->value_in_list && !gtk_combo_find (combo))
400 /* gdk_beep(); *//* this can be annoying */
401 if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
404 printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
406 gtk_grab_add (GTK_WIDGET (combo));
407 /* this is needed because if we call gtk_widget_grab_focus()
408 it isn't guaranteed it's the *last* call before the main-loop,
409 so the focus can be lost anyway...
410 the signal_stop_emission doesn't seem to work either...
412 focus_idle = g_idle_source_new ();
413 g_source_set_closure (focus_idle,
414 g_cclosure_new_object (G_CALLBACK (gtk_combo_focus_idle),
416 g_source_attach (focus_idle, NULL);
418 /*g_signal_stop_emission_by_name (entry, "focus_out_event"); */
425 gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
429 GtkScrolledWindow *popup;
432 GtkRequisition list_requisition;
433 gboolean show_hscroll = FALSE;
434 gboolean show_vscroll = FALSE;
441 gint scrollbar_spacing;
443 widget = GTK_WIDGET (combo);
444 popup = GTK_SCROLLED_WINDOW (combo->popup);
445 popwin = GTK_BIN (combo->popwin);
447 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (popup);
449 gdk_window_get_origin (combo->entry->window, x, y);
450 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
451 *x -= widget->allocation.width - combo->entry->allocation.width;
452 real_height = MIN (combo->entry->requisition.height,
453 combo->entry->allocation.height);
455 avail_height = gdk_screen_get_height (gtk_widget_get_screen (widget)) - *y;
457 gtk_widget_size_request (combo->list, &list_requisition);
458 min_height = MIN (list_requisition.height,
459 popup->vscrollbar->requisition.height);
460 if (!GTK_LIST (combo->list)->children)
461 list_requisition.height += EMPTY_LIST_HEIGHT;
463 alloc_width = (widget->allocation.width -
464 2 * popwin->child->style->xthickness -
465 2 * GTK_CONTAINER (popwin->child)->border_width -
466 2 * GTK_CONTAINER (combo->popup)->border_width -
467 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width -
468 2 * GTK_BIN (popup)->child->style->xthickness);
470 work_height = (2 * popwin->child->style->ythickness +
471 2 * GTK_CONTAINER (popwin->child)->border_width +
472 2 * GTK_CONTAINER (combo->popup)->border_width +
473 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
474 2 * GTK_BIN (popup)->child->style->ythickness);
478 old_width = alloc_width;
479 old_height = work_height;
482 alloc_width < list_requisition.width)
484 GtkRequisition requisition;
486 gtk_widget_size_request (popup->hscrollbar, &requisition);
487 work_height += (requisition.height + scrollbar_spacing);
492 work_height + list_requisition.height > avail_height)
494 GtkRequisition requisition;
496 if (work_height + min_height > avail_height &&
497 *y - real_height > avail_height)
499 *y -= (work_height + list_requisition.height + real_height);
502 gtk_widget_size_request (popup->hscrollbar, &requisition);
503 alloc_width -= (requisition.width + scrollbar_spacing);
506 } while (old_width != alloc_width || old_height != work_height);
508 *width = widget->allocation.width;
510 *height = avail_height;
512 *height = work_height + list_requisition.height;
519 gtk_combo_popup_list (GtkCombo *combo)
523 gint height, width, x, y;
524 gint old_width, old_height;
526 old_width = combo->popwin->allocation.width;
527 old_height = combo->popwin->allocation.height;
529 gtk_combo_get_pos (combo, &x, &y, &height, &width);
531 /* workaround for gtk_scrolled_window_size_allocate bug */
532 if (old_width != width || old_height != height)
534 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
535 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
538 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
540 /* We need to make sure some child of combo->popwin
541 * is focused to disable GtkWindow's automatic
542 * "focus-the-first-item" code. If there is no selected
543 * child, we focus the list itself with some hackery.
545 list = GTK_LIST (combo->list);
549 gtk_widget_grab_focus (list->selection->data);
553 GTK_WIDGET_SET_FLAGS (list, GTK_CAN_FOCUS);
554 gtk_widget_grab_focus (combo->list);
555 GTK_LIST (combo->list)->last_focus_child = NULL;
556 GTK_WIDGET_UNSET_FLAGS (list, GTK_CAN_FOCUS);
559 gtk_window_move (GTK_WINDOW (combo->popwin), x, y);
561 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo));
563 if (GTK_IS_WINDOW (toplevel))
565 gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
566 GTK_WINDOW (combo->popwin));
569 gtk_widget_set_size_request (combo->popwin, width, height);
570 gtk_widget_show (combo->popwin);
572 gtk_widget_grab_focus (combo->popwin);
576 gtk_combo_popdown_list (GtkCombo *combo)
578 combo->current_button = 0;
580 if (GTK_BUTTON (combo->button)->in_button)
582 GTK_BUTTON (combo->button)->in_button = FALSE;
583 gtk_button_released (GTK_BUTTON (combo->button));
586 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
588 gtk_grab_remove (combo->popwin);
589 gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
590 gtk_get_current_event_time ());
591 gdk_display_keyboard_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
592 gtk_get_current_event_time ());
595 gtk_widget_hide (combo->popwin);
597 gtk_window_group_add_window (gtk_window_get_group (NULL), GTK_WINDOW (combo->popwin));
601 popup_grab_on_window (GdkWindow *window,
602 guint32 activate_time)
604 if ((gdk_pointer_grab (window, TRUE,
605 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
606 GDK_POINTER_MOTION_MASK,
607 NULL, NULL, activate_time) == 0))
609 if (gdk_keyboard_grab (window, TRUE,
614 gdk_display_pointer_ungrab (gdk_drawable_get_display (window),
624 gtk_combo_activate (GtkWidget *widget,
627 if (!combo->button->window ||
628 !popup_grab_on_window (combo->button->window,
629 gtk_get_current_event_time ()))
632 gtk_combo_popup_list (combo);
634 /* This must succeed since we already have the grab */
635 popup_grab_on_window (combo->popwin->window,
636 gtk_get_current_event_time ());
638 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
639 gtk_widget_grab_focus (combo->entry);
641 gtk_grab_add (combo->popwin);
645 gtk_combo_popup_button_press (GtkWidget *button,
646 GdkEventButton *event,
649 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
650 gtk_widget_grab_focus (combo->entry);
652 if (event->button != 1)
655 if (!popup_grab_on_window (combo->button->window,
656 gtk_get_current_event_time ()))
659 combo->current_button = event->button;
661 gtk_combo_popup_list (combo);
663 /* This must succeed since we already have the grab */
664 popup_grab_on_window (combo->popwin->window,
665 gtk_get_current_event_time ());
667 gtk_button_pressed (GTK_BUTTON (button));
669 gtk_grab_add (combo->popwin);
675 gtk_combo_popup_button_leave (GtkWidget *button,
676 GdkEventCrossing *event,
679 /* The idea here is that we want to keep the button down if the
680 * popup is popped up.
682 return combo->current_button != 0;
686 gtk_combo_update_entry (GtkCombo * combo)
688 GtkList *list = GTK_LIST (combo->list);
691 g_signal_handler_block (list, combo->list_change_id);
694 text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
697 gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
699 g_signal_handler_unblock (list, combo->list_change_id);
703 gtk_combo_selection_changed (GtkList *list,
706 if (!GTK_WIDGET_VISIBLE (combo->popwin))
707 gtk_combo_update_entry (combo);
711 gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
713 GtkList *list = GTK_LIST (combo->list);
714 GList *slist = list->selection;
717 gtk_grab_remove (GTK_WIDGET (combo));
719 g_signal_handler_block (entry, combo->entry_change_id);
720 if (slist && slist->data)
721 gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
722 li = gtk_combo_find (combo);
724 gtk_list_select_child (list, GTK_WIDGET (li));
725 g_signal_handler_unblock (entry, combo->entry_change_id);
729 gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
733 child = gtk_get_event_widget (event);
735 /* We don't ask for button press events on the grab widget, so
736 * if an event is reported directly to the grab widget, it must
737 * be on a window outside the application (and thus we remove
738 * the popup window). Otherwise, we check if the widget is a child
739 * of the grab widget, and only remove the popup window if it
748 child = child->parent;
752 gtk_combo_popdown_list (combo);
758 is_within (GtkWidget *widget,
761 return widget == ancestor || gtk_widget_is_ancestor (widget, ancestor);
765 gtk_combo_button_event_after (GtkWidget *widget,
771 if (event->type != GDK_BUTTON_RELEASE)
774 child = gtk_get_event_widget ((GdkEvent*) event);
776 if ((combo->current_button != 0) && (event->button.button == 1))
778 /* This was the initial button press */
780 combo->current_button = 0;
782 /* Check to see if we released inside the button */
783 if (child && is_within (child, combo->button))
785 gtk_grab_add (combo->popwin);
786 gdk_pointer_grab (combo->popwin->window, TRUE,
787 GDK_BUTTON_PRESS_MASK |
788 GDK_BUTTON_RELEASE_MASK |
789 GDK_POINTER_MOTION_MASK,
790 NULL, NULL, GDK_CURRENT_TIME);
795 if (is_within (child, combo->list))
796 gtk_combo_update_entry (combo);
798 gtk_combo_popdown_list (combo);
803 find_child_foreach (GtkWidget *widget,
806 GdkEventButton *event = data;
810 if (event->x >= widget->allocation.x &&
811 event->x < widget->allocation.x + widget->allocation.width &&
812 event->y >= widget->allocation.y &&
813 event->y < widget->allocation.y + widget->allocation.height)
814 event->window = g_object_ref (widget->window);
819 find_child_window (GtkContainer *container,
820 GdkEventButton *event)
822 gtk_container_foreach (container, find_child_foreach, event);
826 gtk_combo_list_enter (GtkWidget *widget,
827 GdkEventCrossing *event,
830 GtkWidget *event_widget;
832 event_widget = gtk_get_event_widget ((GdkEvent*) event);
834 if ((event_widget == combo->list) &&
835 (combo->current_button != 0) &&
836 (!GTK_WIDGET_HAS_GRAB (combo->list)))
838 GdkEvent *tmp_event = gdk_event_new (GDK_BUTTON_PRESS);
840 GdkModifierType mask;
842 gtk_grab_remove (combo->popwin);
844 /* Transfer the grab over to the list by synthesizing
845 * a button press event
847 gdk_window_get_pointer (combo->list->window, &x, &y, &mask);
849 tmp_event->button.send_event = TRUE;
850 tmp_event->button.time = GDK_CURRENT_TIME; /* bad */
851 tmp_event->button.x = x;
852 tmp_event->button.y = y;
853 /* We leave all the XInput fields unfilled here, in the expectation
854 * that GtkList doesn't care.
856 tmp_event->button.button = combo->current_button;
857 tmp_event->button.state = mask;
859 find_child_window (GTK_CONTAINER (combo->list), &tmp_event->button);
860 if (!tmp_event->button.window)
864 if (GTK_LIST (combo->list)->children)
865 child = GTK_LIST (combo->list)->children->data;
869 tmp_event->button.window = g_object_ref (child->window);
872 gtk_widget_event (combo->list, tmp_event);
873 gdk_event_free (tmp_event);
880 gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
882 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
884 if (event->keyval == GDK_Escape && state == 0)
886 if (GTK_WIDGET_HAS_GRAB (combo->list))
887 gtk_list_end_drag_selection (GTK_LIST (combo->list));
889 gtk_combo_popdown_list (combo);
897 combo_event_box_realize (GtkWidget *widget)
899 GdkCursor *cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
901 gdk_window_set_cursor (widget->window, cursor);
902 gdk_cursor_unref (cursor);
906 gtk_combo_init (GtkCombo * combo)
910 GtkWidget *event_box;
912 combo->case_sensitive = FALSE;
913 combo->value_in_list = FALSE;
914 combo->ok_if_empty = TRUE;
915 combo->use_arrows = TRUE;
916 combo->use_arrows_always = FALSE;
917 combo->entry = gtk_entry_new ();
918 combo->button = gtk_button_new ();
919 combo->current_button = 0;
920 arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
921 gtk_widget_show (arrow);
922 gtk_container_add (GTK_CONTAINER (combo->button), arrow);
923 gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
924 gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
925 GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS);
926 gtk_widget_show (combo->entry);
927 gtk_widget_show (combo->button);
928 combo->entry_change_id = g_signal_connect (combo->entry, "changed",
929 G_CALLBACK (gtk_combo_update_list),
931 g_signal_connect_after (combo->entry, "key_press_event",
932 G_CALLBACK (gtk_combo_entry_key_press), combo);
933 g_signal_connect_after (combo->entry, "focus_out_event",
934 G_CALLBACK (gtk_combo_entry_focus_out), combo);
935 combo->activate_id = g_signal_connect (combo->entry, "activate",
936 G_CALLBACK (gtk_combo_activate),
938 g_signal_connect (combo->button, "button_press_event",
939 G_CALLBACK (gtk_combo_popup_button_press), combo);
940 g_signal_connect (combo->button, "leave_notify_event",
941 G_CALLBACK (gtk_combo_popup_button_leave), combo);
943 combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
944 g_object_ref (combo->popwin);
945 gtk_window_set_resizable (GTK_WINDOW (combo->popwin), FALSE);
947 g_signal_connect (combo->popwin, "key_press_event",
948 G_CALLBACK (gtk_combo_window_key_press), combo);
950 gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK);
952 event_box = gtk_event_box_new ();
953 gtk_container_add (GTK_CONTAINER (combo->popwin), event_box);
954 g_signal_connect (event_box, "realize",
955 G_CALLBACK (combo_event_box_realize), NULL);
956 gtk_widget_show (event_box);
959 frame = gtk_frame_new (NULL);
960 gtk_container_add (GTK_CONTAINER (event_box), frame);
961 gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
962 gtk_widget_show (frame);
964 combo->popup = gtk_scrolled_window_new (NULL, NULL);
965 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
966 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
967 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS);
968 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS);
969 gtk_container_add (GTK_CONTAINER (frame), combo->popup);
970 gtk_widget_show (combo->popup);
972 combo->list = gtk_list_new ();
973 /* We'll use enter notify events to figure out when to transfer
974 * the grab to the list
976 gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK);
978 gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
979 gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list);
980 gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list),
981 gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
982 gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list),
983 gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
984 gtk_widget_show (combo->list);
986 combo->list_change_id = g_signal_connect (combo->list, "selection_changed",
987 G_CALLBACK (gtk_combo_selection_changed), combo);
989 g_signal_connect (combo->popwin, "key_press_event",
990 G_CALLBACK (gtk_combo_list_key_press), combo);
991 g_signal_connect (combo->popwin, "button_press_event",
992 G_CALLBACK (gtk_combo_button_press), combo);
994 g_signal_connect (combo->popwin, "event_after",
995 G_CALLBACK (gtk_combo_button_event_after), combo);
996 g_signal_connect (combo->list, "event_after",
997 G_CALLBACK (gtk_combo_button_event_after), combo);
999 g_signal_connect (combo->list, "enter_notify_event",
1000 G_CALLBACK (gtk_combo_list_enter), combo);
1004 gtk_combo_realize (GtkWidget *widget)
1006 GtkCombo *combo = GTK_COMBO (widget);
1008 gtk_window_set_screen (GTK_WINDOW (combo->popwin),
1009 gtk_widget_get_screen (widget));
1011 GTK_WIDGET_CLASS( parent_class )->realize (widget);
1015 gtk_combo_unrealize (GtkWidget *widget)
1017 GtkCombo *combo = GTK_COMBO (widget);
1019 gtk_combo_popdown_list (combo);
1020 gtk_widget_unrealize (combo->popwin);
1022 GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
1026 gtk_combo_get_type (void)
1028 static GType combo_type = 0;
1032 static const GTypeInfo combo_info =
1034 sizeof (GtkComboClass),
1035 NULL, /* base_init */
1036 NULL, /* base_finalize */
1037 (GClassInitFunc) gtk_combo_class_init,
1038 NULL, /* class_finalize */
1039 NULL, /* class_data */
1041 0, /* n_preallocs */
1042 (GInstanceInitFunc) gtk_combo_init,
1045 combo_type = g_type_register_static (GTK_TYPE_HBOX, I_("GtkCombo"),
1053 gtk_combo_new (void)
1055 return g_object_new (GTK_TYPE_COMBO, NULL);
1059 gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty)
1061 g_return_if_fail (GTK_IS_COMBO (combo));
1063 ok_if_empty = ok_if_empty != FALSE;
1065 g_object_freeze_notify (G_OBJECT (combo));
1066 if (combo->value_in_list != val)
1068 combo->value_in_list = val;
1069 g_object_notify (G_OBJECT (combo), "value_in_list");
1071 if (combo->ok_if_empty != ok_if_empty)
1073 combo->ok_if_empty = ok_if_empty;
1074 g_object_notify (G_OBJECT (combo), "allow_empty");
1076 g_object_thaw_notify (G_OBJECT (combo));
1080 gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val)
1082 g_return_if_fail (GTK_IS_COMBO (combo));
1085 if (combo->case_sensitive != val)
1087 combo->case_sensitive = val;
1088 g_object_notify (G_OBJECT (combo), "case_sensitive");
1093 gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val)
1095 g_return_if_fail (GTK_IS_COMBO (combo));
1098 if (combo->use_arrows != val)
1100 combo->use_arrows = val;
1101 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1106 gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val)
1108 g_return_if_fail (GTK_IS_COMBO (combo));
1111 if (combo->use_arrows_always != val)
1113 g_object_freeze_notify (G_OBJECT (combo));
1114 combo->use_arrows_always = val;
1115 g_object_notify (G_OBJECT (combo), "enable_arrows_always");
1117 if (combo->use_arrows != TRUE)
1119 combo->use_arrows = TRUE;
1120 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1122 g_object_thaw_notify (G_OBJECT (combo));
1127 gtk_combo_set_popdown_strings (GtkCombo *combo,
1133 g_return_if_fail (GTK_IS_COMBO (combo));
1135 gtk_combo_popdown_list (combo);
1137 gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
1141 li = gtk_list_item_new_with_label ((gchar *) list->data);
1142 gtk_widget_show (li);
1143 gtk_container_add (GTK_CONTAINER (combo->list), li);
1149 gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
1151 g_return_if_fail (GTK_IS_COMBO (combo));
1152 g_return_if_fail (item != NULL);
1154 g_object_set_data_full (G_OBJECT (item), I_(gtk_combo_string_key),
1155 g_strdup (item_value), g_free);
1159 gtk_combo_size_allocate (GtkWidget *widget,
1160 GtkAllocation *allocation)
1164 g_return_if_fail (GTK_IS_COMBO (widget));
1165 g_return_if_fail (allocation != NULL);
1167 GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
1169 combo = GTK_COMBO (widget);
1171 if (combo->entry->allocation.height > combo->entry->requisition.height)
1173 GtkAllocation button_allocation;
1175 button_allocation = combo->button->allocation;
1176 button_allocation.height = combo->entry->requisition.height;
1177 button_allocation.y = combo->entry->allocation.y +
1178 (combo->entry->allocation.height - combo->entry->requisition.height)
1180 gtk_widget_size_allocate (combo->button, &button_allocation);
1185 gtk_combo_disable_activate (GtkCombo* combo)
1187 g_return_if_fail (GTK_IS_COMBO (combo));
1189 if ( combo->activate_id ) {
1190 g_signal_handler_disconnect (combo->entry, combo->activate_id);
1191 combo->activate_id = 0;
1196 gtk_combo_set_property (GObject *object,
1198 const GValue *value,
1201 GtkCombo *combo = GTK_COMBO (object);
1205 case PROP_ENABLE_ARROW_KEYS:
1206 gtk_combo_set_use_arrows (combo, g_value_get_boolean (value));
1208 case PROP_ENABLE_ARROWS_ALWAYS:
1209 gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value));
1211 case PROP_CASE_SENSITIVE:
1212 gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value));
1214 case PROP_ALLOW_EMPTY:
1215 combo->ok_if_empty = g_value_get_boolean (value);
1217 case PROP_VALUE_IN_LIST:
1218 combo->value_in_list = g_value_get_boolean (value);
1221 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1228 gtk_combo_get_property (GObject *object,
1233 GtkCombo *combo = GTK_COMBO (object);
1237 case PROP_ENABLE_ARROW_KEYS:
1238 g_value_set_boolean (value, combo->use_arrows);
1240 case PROP_ENABLE_ARROWS_ALWAYS:
1241 g_value_set_boolean (value, combo->use_arrows_always);
1243 case PROP_CASE_SENSITIVE:
1244 g_value_set_boolean (value, combo->case_sensitive);
1246 case PROP_ALLOW_EMPTY:
1247 g_value_set_boolean (value, combo->ok_if_empty);
1249 case PROP_VALUE_IN_LIST:
1250 g_value_set_boolean (value, combo->value_in_list);
1253 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1259 #define __GTK_SMART_COMBO_C__
1260 #include "gtkaliasdef.c"