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+
37 #include "gtkeventbox.h"
38 #include "gtkbutton.h"
39 #include "gtklistitem.h"
40 #include "gtkscrolledwindow.h"
42 #include "gtksignal.h"
43 #include "gtkwindow.h"
44 #include "gdk/gdkkeysyms.h"
49 const gchar *gtk_combo_string_key = "gtk-combo-string-value";
51 #define COMBO_LIST_MAX_HEIGHT (400)
52 #define EMPTY_LIST_HEIGHT (15)
56 PROP_ENABLE_ARROW_KEYS,
57 PROP_ENABLE_ARROWS_ALWAYS,
63 static void gtk_combo_class_init (GtkComboClass *klass);
64 static void gtk_combo_init (GtkCombo *combo);
65 static void gtk_combo_realize (GtkWidget *widget);
66 static void gtk_combo_unrealize (GtkWidget *widget);
67 static void gtk_combo_destroy (GtkObject *combo);
68 static GtkListItem *gtk_combo_find (GtkCombo *combo);
69 static gchar * gtk_combo_func (GtkListItem *li);
70 static gint gtk_combo_focus_idle (GtkCombo *combo);
71 static gint gtk_combo_entry_focus_out (GtkEntry *entry,
74 static void gtk_combo_get_pos (GtkCombo *combo,
79 static void gtk_combo_popup_list (GtkCombo *combo);
80 static void gtk_combo_activate (GtkWidget *widget,
82 static gboolean gtk_combo_popup_button_press (GtkWidget *button,
83 GdkEventButton *event,
85 static gboolean gtk_combo_popup_button_leave (GtkWidget *button,
86 GdkEventCrossing *event,
88 static void gtk_combo_update_entry (GtkList *list,
90 static void gtk_combo_update_list (GtkEntry *entry,
92 static gint gtk_combo_button_press (GtkWidget *widget,
95 static void gtk_combo_button_event_after (GtkWidget *widget,
98 static gint gtk_combo_list_enter (GtkWidget *widget,
99 GdkEventCrossing *event,
101 static gint gtk_combo_list_key_press (GtkWidget *widget,
104 static gint gtk_combo_entry_key_press (GtkEntry *widget,
107 static gint gtk_combo_window_key_press (GtkWidget *window,
110 static void gtk_combo_item_destroy (GtkObject *object);
111 static void gtk_combo_size_allocate (GtkWidget *widget,
112 GtkAllocation *allocation);
113 static void gtk_combo_set_property (GObject *object,
117 static void gtk_combo_get_property (GObject *object,
121 static GtkHBoxClass *parent_class = NULL;
124 gtk_combo_class_init (GtkComboClass * klass)
126 GObjectClass *gobject_class;
127 GtkObjectClass *oclass;
128 GtkWidgetClass *widget_class;
130 gobject_class = (GObjectClass *) klass;
131 parent_class = gtk_type_class (GTK_TYPE_HBOX);
132 oclass = (GtkObjectClass *) klass;
133 widget_class = (GtkWidgetClass *) klass;
135 gobject_class->set_property = gtk_combo_set_property;
136 gobject_class->get_property = gtk_combo_get_property;
138 g_object_class_install_property (gobject_class,
139 PROP_ENABLE_ARROW_KEYS,
140 g_param_spec_boolean ("enable_arrow_keys",
141 _("Enable arrow keys"),
142 _("Whether the arrow keys move through the list of items"),
144 G_PARAM_READABLE | G_PARAM_WRITABLE));
145 g_object_class_install_property (gobject_class,
146 PROP_ENABLE_ARROWS_ALWAYS,
147 g_param_spec_boolean ("enable_arrows_always",
148 _("Always enable arrows"),
149 _("Whether the arrow keys work, even if the entry contents are not in the list"),
151 G_PARAM_READABLE | G_PARAM_WRITABLE));
152 g_object_class_install_property (gobject_class,
154 g_param_spec_boolean ("case_sensitive",
156 _("Whether list item matching is case sensitive"),
158 G_PARAM_READABLE | G_PARAM_WRITABLE));
160 g_object_class_install_property (gobject_class,
162 g_param_spec_boolean ("allow_empty",
164 _("Whether an empty value may be entered in this field"),
166 G_PARAM_READABLE | G_PARAM_WRITABLE));
168 g_object_class_install_property (gobject_class,
170 g_param_spec_boolean ("value_in_list",
172 _("Whether entered values must already be present in the list"),
174 G_PARAM_READABLE | G_PARAM_WRITABLE));
177 oclass->destroy = gtk_combo_destroy;
179 widget_class->size_allocate = gtk_combo_size_allocate;
180 widget_class->realize = gtk_combo_realize;
181 widget_class->unrealize = gtk_combo_unrealize;
185 gtk_combo_destroy (GtkObject *object)
187 GtkCombo *combo = GTK_COMBO (object);
191 gtk_widget_destroy (combo->popwin);
192 gtk_widget_unref (combo->popwin);
193 combo->popwin = NULL;
196 GTK_OBJECT_CLASS (parent_class)->destroy (object);
200 gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
205 if ((event->keyval == GDK_Tab ||
206 event->keyval == GDK_KP_Tab) &&
207 (event->state & GDK_MOD1_MASK))
209 GtkEditable *editable = GTK_EDITABLE (entry);
212 gchar* nprefix = NULL;
215 if ( !GTK_LIST (combo->list)->children )
218 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
220 cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func);
221 g_completion_add_items (cmpl, GTK_LIST (combo->list)->children);
223 pos = gtk_editable_get_position (editable);
224 prefix = gtk_editable_get_chars (editable, 0, pos);
226 g_completion_complete (cmpl, prefix, &nprefix);
228 if (nprefix && strlen (nprefix) > strlen (prefix))
230 gtk_editable_insert_text (editable, nprefix + pos,
231 strlen (nprefix) - strlen (prefix), &pos);
232 gtk_editable_set_position (editable, pos);
238 g_completion_free (cmpl);
243 if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
246 li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
248 if ((event->keyval == GDK_Up)
249 || (event->keyval == GDK_KP_Up)
250 || ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'p') || (event->keyval == 'P'))))
254 if (!li && combo->use_arrows_always)
256 li = g_list_last (GTK_LIST (combo->list)->children);
260 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
261 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
265 else if ((event->keyval == GDK_Down)
266 || (event->keyval == GDK_KP_Down)
267 || ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'n') || (event->keyval == 'N'))))
271 if (!li && combo->use_arrows_always)
273 li = GTK_LIST (combo->list)->children;
277 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
278 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
286 gtk_combo_window_key_press (GtkWidget *window,
290 if (event->keyval == GDK_Return || event->keyval == GDK_KP_Enter)
292 if (GTK_WIDGET_VISIBLE (combo->popwin))
294 gtk_widget_hide (combo->popwin);
296 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
298 gtk_grab_remove (combo->popwin);
299 gdk_display_pointer_ungrab (gtk_widget_get_display (window),
304 gtk_signal_emit_stop_by_name (GTK_OBJECT (window), "key_press_event");
313 gtk_combo_find (GtkCombo * combo)
316 GtkListItem *found = NULL;
321 text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
322 if (combo->case_sensitive)
323 compare_text = (gchar *)text;
325 compare_text = g_utf8_casefold (text, -1);
327 for (clist = GTK_LIST (combo->list)->children;
331 ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
335 if (!combo->case_sensitive)
336 ltext = g_utf8_casefold (ltext, -1);
338 if (strcmp (ltext, compare_text) == 0)
341 if (!combo->case_sensitive)
345 if (!combo->case_sensitive)
346 g_free (compare_text);
352 gtk_combo_func (GtkListItem * li)
357 ltext = (gchar *) gtk_object_get_data (GTK_OBJECT (li), gtk_combo_string_key);
360 label = GTK_BIN (li)->child;
361 if (!label || !GTK_IS_LABEL (label))
363 gtk_label_get (GTK_LABEL (label), <ext);
369 gtk_combo_focus_idle (GtkCombo * combo)
373 GDK_THREADS_ENTER ();
374 gtk_widget_grab_focus (combo->entry);
375 GDK_THREADS_LEAVE ();
381 gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
384 if (combo->value_in_list && !gtk_combo_find (combo))
388 /* gdk_beep(); *//* this can be annoying */
389 if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
392 printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
394 gtk_grab_add (GTK_WIDGET (combo));
395 /* this is needed because if we call gtk_widget_grab_focus()
396 it isn't guaranteed it's the *last* call before the main-loop,
397 so the focus can be lost anyway...
398 the signal_emit_stop doesn't seem to work either...
400 focus_idle = g_idle_source_new ();
401 g_source_set_closure (focus_idle,
402 g_cclosure_new_object (G_CALLBACK (gtk_combo_focus_idle),
404 g_source_attach (focus_idle, NULL);
406 /*gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "focus_out_event"); */
413 gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
417 GtkScrolledWindow *popup;
420 GtkRequisition list_requisition;
421 gboolean show_hscroll = FALSE;
422 gboolean show_vscroll = FALSE;
429 gint scrollbar_spacing;
431 widget = GTK_WIDGET (combo);
432 popup = GTK_SCROLLED_WINDOW (combo->popup);
433 popwin = GTK_BIN (combo->popwin);
435 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (popup);
437 gdk_window_get_origin (combo->entry->window, x, y);
438 real_height = MIN (combo->entry->requisition.height,
439 combo->entry->allocation.height);
441 avail_height = gdk_screen_get_height (gtk_widget_get_screen (widget)) - *y;
443 gtk_widget_size_request (combo->list, &list_requisition);
444 min_height = MIN (list_requisition.height,
445 popup->vscrollbar->requisition.height);
446 if (!GTK_LIST (combo->list)->children)
447 list_requisition.height += EMPTY_LIST_HEIGHT;
449 alloc_width = (widget->allocation.width -
450 2 * popwin->child->style->xthickness -
451 2 * GTK_CONTAINER (popwin->child)->border_width -
452 2 * GTK_CONTAINER (combo->popup)->border_width -
453 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width -
454 2 * GTK_BIN (popup)->child->style->xthickness);
456 work_height = (2 * popwin->child->style->ythickness +
457 2 * GTK_CONTAINER (popwin->child)->border_width +
458 2 * GTK_CONTAINER (combo->popup)->border_width +
459 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
460 2 * GTK_BIN (popup)->child->style->ythickness);
464 old_width = alloc_width;
465 old_height = work_height;
468 alloc_width < list_requisition.width)
470 GtkRequisition requisition;
472 gtk_widget_size_request (popup->hscrollbar, &requisition);
473 work_height += (requisition.height + scrollbar_spacing);
478 work_height + list_requisition.height > avail_height)
480 GtkRequisition requisition;
482 if (work_height + min_height > avail_height &&
483 *y - real_height > avail_height)
485 *y -= (work_height + list_requisition.height + real_height);
488 gtk_widget_size_request (popup->hscrollbar, &requisition);
489 alloc_width -= (requisition.width + scrollbar_spacing);
492 } while (old_width != alloc_width || old_height != work_height);
494 *width = widget->allocation.width;
496 *height = avail_height;
498 *height = work_height + list_requisition.height;
505 gtk_combo_popup_list (GtkCombo * combo)
507 gint height, width, x, y;
508 gint old_width, old_height;
510 old_width = combo->popwin->allocation.width;
511 old_height = combo->popwin->allocation.height;
513 gtk_combo_get_pos (combo, &x, &y, &height, &width);
515 /* workaround for gtk_scrolled_window_size_allocate bug */
516 if (old_width != width || old_height != height)
518 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
519 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
522 gtk_window_move (GTK_WINDOW (combo->popwin), x, y);
523 gtk_widget_set_usize (combo->popwin, width, height);
524 gtk_widget_show (combo->popwin);
526 gtk_widget_grab_focus (combo->popwin);
530 gtk_combo_popdown_list (GtkCombo *combo)
532 combo->current_button = 0;
534 if (GTK_BUTTON (combo->button)->in_button)
536 GTK_BUTTON (combo->button)->in_button = FALSE;
537 gtk_button_released (GTK_BUTTON (combo->button));
540 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
542 gtk_grab_remove (combo->popwin);
543 gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
547 gtk_widget_hide (combo->popwin);
551 gtk_combo_activate (GtkWidget *widget,
554 gtk_combo_popup_list (combo);
556 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
557 gtk_widget_grab_focus (combo->entry);
559 gtk_grab_add (combo->popwin);
560 gdk_pointer_grab (combo->popwin->window, TRUE,
561 GDK_BUTTON_PRESS_MASK |
562 GDK_BUTTON_RELEASE_MASK |
563 GDK_POINTER_MOTION_MASK,
564 NULL, NULL, GDK_CURRENT_TIME);
568 gtk_combo_popup_button_press (GtkWidget *button,
569 GdkEventButton *event,
572 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
573 gtk_widget_grab_focus (combo->entry);
575 if (event->button != 1)
578 combo->current_button = event->button;
580 gtk_combo_popup_list (combo);
581 gtk_button_pressed (GTK_BUTTON (button));
583 gtk_grab_add (combo->popwin);
584 gdk_pointer_grab (combo->popwin->window, TRUE,
585 GDK_BUTTON_PRESS_MASK |
586 GDK_BUTTON_RELEASE_MASK |
587 GDK_POINTER_MOTION_MASK,
588 NULL, NULL, GDK_CURRENT_TIME);
590 GTK_LIST (combo->list)->drag_selection = TRUE;
591 gtk_grab_add (combo->list);
597 gtk_combo_popup_button_leave (GtkWidget *button,
598 GdkEventCrossing *event,
601 /* The idea here is that we want to keep the button down if the
602 * popup is popped up.
604 return combo->current_button != 0;
608 gtk_combo_update_entry (GtkList * list, GtkCombo * combo)
612 gtk_grab_remove (GTK_WIDGET (combo));
613 gtk_signal_handler_block (GTK_OBJECT (list), combo->list_change_id);
616 text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
619 gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
621 gtk_signal_handler_unblock (GTK_OBJECT (list), combo->list_change_id);
625 gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
627 GtkList *list = GTK_LIST (combo->list);
628 GList *slist = list->selection;
631 gtk_grab_remove (GTK_WIDGET (combo));
633 gtk_signal_handler_block (GTK_OBJECT (entry), combo->entry_change_id);
634 if (slist && slist->data)
635 gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
636 li = gtk_combo_find (combo);
638 gtk_list_select_child (list, GTK_WIDGET (li));
639 gtk_signal_handler_unblock (GTK_OBJECT (entry), combo->entry_change_id);
643 gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
647 child = gtk_get_event_widget (event);
649 /* We don't ask for button press events on the grab widget, so
650 * if an event is reported directly to the grab widget, it must
651 * be on a window outside the application (and thus we remove
652 * the popup window). Otherwise, we check if the widget is a child
653 * of the grab widget, and only remove the popup window if it
662 child = child->parent;
666 gtk_combo_popdown_list (combo);
672 gtk_combo_button_event_after (GtkWidget *widget,
678 if (event->type != GDK_BUTTON_RELEASE)
681 if ((combo->current_button != 0) && (event->button.button == 1))
683 /* This was the initial button press */
685 combo->current_button = 0;
687 /* Check to see if we released inside the button */
688 child = gtk_get_event_widget ((GdkEvent*) event);
690 while (child && child != (combo->button))
691 child = child->parent;
693 if (child == combo->button)
695 gtk_grab_add (combo->popwin);
696 gdk_pointer_grab (combo->popwin->window, TRUE,
697 GDK_BUTTON_PRESS_MASK |
698 GDK_BUTTON_RELEASE_MASK |
699 GDK_POINTER_MOTION_MASK,
700 NULL, NULL, GDK_CURRENT_TIME);
705 gtk_combo_popdown_list (combo);
709 gtk_combo_list_enter (GtkWidget *widget,
710 GdkEventCrossing *event,
713 GtkWidget *event_widget;
715 event_widget = gtk_get_event_widget ((GdkEvent*) event);
717 if ((event_widget == combo->list) &&
718 (combo->current_button != 0) &&
719 (!GTK_WIDGET_HAS_GRAB (combo->list)))
721 GdkEvent *tmp_event = gdk_event_new (GDK_BUTTON_PRESS);
723 GdkModifierType mask;
725 gtk_grab_remove (combo->popwin);
727 /* Transfer the grab over to the list by synthesizing
728 * a button press event
730 gdk_window_get_pointer (combo->list->window, &x, &y, &mask);
732 tmp_event->button.window = g_object_ref (combo->list->window);
733 tmp_event->button.send_event = TRUE;
734 tmp_event->button.time = GDK_CURRENT_TIME; /* bad */
735 tmp_event->button.x = x;
736 tmp_event->button.y = y;
737 /* We leave all the XInput fields unfilled here, in the expectation
738 * that GtkList doesn't care.
740 tmp_event->button.button = combo->current_button;
741 tmp_event->button.state = mask;
743 gtk_widget_event (combo->list, tmp_event);
744 gdk_event_free (tmp_event);
751 gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
753 if (event->keyval == GDK_Escape)
755 if (GTK_WIDGET_HAS_GRAB (combo->list))
756 gtk_list_end_drag_selection (GTK_LIST (combo->list));
758 gtk_combo_popdown_list (combo);
766 combo_event_box_realize (GtkWidget *widget)
768 GdkCursor *cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
770 gdk_window_set_cursor (widget->window, cursor);
771 gdk_cursor_destroy (cursor);
775 gtk_combo_init (GtkCombo * combo)
779 GtkWidget *event_box;
781 combo->case_sensitive = FALSE;
782 combo->value_in_list = FALSE;
783 combo->ok_if_empty = TRUE;
784 combo->use_arrows = TRUE;
785 combo->use_arrows_always = FALSE;
786 combo->entry = gtk_entry_new ();
787 combo->button = gtk_button_new ();
788 combo->current_button = 0;
789 arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
790 gtk_widget_show (arrow);
791 gtk_container_add (GTK_CONTAINER (combo->button), arrow);
792 gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
793 gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
794 GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS);
795 gtk_widget_show (combo->entry);
796 gtk_widget_show (combo->button);
797 combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
798 (GtkSignalFunc) gtk_combo_update_list, combo);
799 gtk_signal_connect (GTK_OBJECT (combo->entry), "key_press_event",
800 (GtkSignalFunc) gtk_combo_entry_key_press, combo);
801 gtk_signal_connect_after (GTK_OBJECT (combo->entry), "focus_out_event",
802 (GtkSignalFunc) gtk_combo_entry_focus_out, combo);
803 combo->activate_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "activate",
804 (GtkSignalFunc) gtk_combo_activate, combo);
805 gtk_signal_connect (GTK_OBJECT (combo->button), "button_press_event",
806 (GtkSignalFunc) gtk_combo_popup_button_press, combo);
807 gtk_signal_connect (GTK_OBJECT (combo->button), "leave_notify_event",
808 (GtkSignalFunc) gtk_combo_popup_button_leave, combo);
810 combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
811 gtk_widget_ref (combo->popwin);
812 gtk_window_set_resizable (GTK_WINDOW (combo->popwin), FALSE);
814 gtk_signal_connect (GTK_OBJECT (combo->popwin), "key_press_event",
815 GTK_SIGNAL_FUNC (gtk_combo_window_key_press), combo);
817 gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK);
819 event_box = gtk_event_box_new ();
820 gtk_container_add (GTK_CONTAINER (combo->popwin), event_box);
821 g_signal_connect (event_box, "realize",
822 G_CALLBACK (combo_event_box_realize), NULL);
823 gtk_widget_show (event_box);
826 frame = gtk_frame_new (NULL);
827 gtk_container_add (GTK_CONTAINER (event_box), frame);
828 gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
829 gtk_widget_show (frame);
831 combo->popup = gtk_scrolled_window_new (NULL, NULL);
832 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
833 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
834 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS);
835 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS);
836 gtk_container_add (GTK_CONTAINER (frame), combo->popup);
837 gtk_widget_show (combo->popup);
839 combo->list = gtk_list_new ();
840 /* We'll use enter notify events to figure out when to transfer
841 * the grab to the list
843 gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK);
845 gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
846 gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list);
847 gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list),
848 gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
849 gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list),
850 gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
851 gtk_widget_show (combo->list);
853 combo->list_change_id = gtk_signal_connect (GTK_OBJECT (combo->list), "selection_changed",
854 (GtkSignalFunc) gtk_combo_update_entry, combo);
855 gtk_signal_connect (GTK_OBJECT (combo->popwin), "key_press_event",
856 (GtkSignalFunc) gtk_combo_list_key_press, combo);
857 gtk_signal_connect (GTK_OBJECT (combo->popwin), "button_press_event",
858 GTK_SIGNAL_FUNC (gtk_combo_button_press), combo);
860 gtk_signal_connect (GTK_OBJECT (combo->list), "event_after",
861 (GtkSignalFunc) gtk_combo_button_event_after, combo);
862 /* We connect here on the button, because we'll have a grab on it
863 * when the event occurs. But we are actually interested in enters
864 * for the combo->list.
866 gtk_signal_connect (GTK_OBJECT (combo->button), "enter_notify_event",
867 GTK_SIGNAL_FUNC (gtk_combo_list_enter), combo);
871 gtk_combo_realize (GtkWidget *widget)
873 GtkCombo *combo = GTK_COMBO (widget);
875 gtk_window_set_screen (GTK_WINDOW (combo->popwin),
876 gtk_widget_get_screen (widget));
878 GTK_WIDGET_CLASS( parent_class )->realize (widget);
882 gtk_combo_unrealize (GtkWidget *widget)
884 GtkCombo *combo = GTK_COMBO (widget);
886 gtk_combo_popdown_list (combo);
887 gtk_widget_unrealize (combo->popwin);
889 GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
893 gtk_combo_get_type (void)
895 static GtkType combo_type = 0;
899 static const GtkTypeInfo combo_info =
903 sizeof (GtkComboClass),
904 (GtkClassInitFunc) gtk_combo_class_init,
905 (GtkObjectInitFunc) gtk_combo_init,
906 /* reserved_1 */ NULL,
907 /* reserved_2 */ NULL,
908 (GtkClassInitFunc) NULL,
910 combo_type = gtk_type_unique (GTK_TYPE_HBOX, &combo_info);
918 return GTK_WIDGET (gtk_type_new (GTK_TYPE_COMBO));
922 gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty)
924 g_return_if_fail (GTK_IS_COMBO (combo));
926 ok_if_empty = ok_if_empty != FALSE;
928 g_object_freeze_notify (G_OBJECT (combo));
929 if (combo->value_in_list != val)
931 combo->value_in_list = val;
932 g_object_notify (G_OBJECT (combo), "value_in_list");
934 if (combo->ok_if_empty != ok_if_empty)
936 combo->ok_if_empty = ok_if_empty;
937 g_object_notify (G_OBJECT (combo), "allow_empty");
939 g_object_thaw_notify (G_OBJECT (combo));
943 gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val)
945 g_return_if_fail (GTK_IS_COMBO (combo));
948 if (combo->case_sensitive != val)
950 combo->case_sensitive = val;
951 g_object_notify (G_OBJECT (combo), "case_sensitive");
956 gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val)
958 g_return_if_fail (GTK_IS_COMBO (combo));
961 if (combo->use_arrows != val)
963 combo->use_arrows = val;
964 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
969 gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val)
971 g_return_if_fail (GTK_IS_COMBO (combo));
974 if (combo->use_arrows_always != val)
976 g_object_freeze_notify (G_OBJECT (combo));
977 combo->use_arrows_always = val;
978 g_object_notify (G_OBJECT (combo), "enable_arrows_always");
980 if (combo->use_arrows != TRUE)
982 combo->use_arrows = TRUE;
983 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
985 g_object_thaw_notify (G_OBJECT (combo));
990 gtk_combo_set_popdown_strings (GtkCombo * combo, GList * strings)
995 g_return_if_fail (GTK_IS_COMBO (combo));
996 g_return_if_fail (strings != NULL);
998 gtk_combo_popdown_list (combo);
1000 gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
1004 li = gtk_list_item_new_with_label ((gchar *) list->data);
1005 gtk_widget_show (li);
1006 gtk_container_add (GTK_CONTAINER (combo->list), li);
1012 gtk_combo_item_destroy (GtkObject * object)
1016 key = gtk_object_get_data (object, gtk_combo_string_key);
1019 gtk_object_remove_data (object, gtk_combo_string_key);
1025 gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
1030 g_return_if_fail (GTK_IS_COMBO (combo));
1031 g_return_if_fail (item != NULL);
1033 val = gtk_object_get_data (GTK_OBJECT (item), gtk_combo_string_key);
1041 val = g_strdup (item_value);
1042 gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, val);
1044 gtk_signal_connect (GTK_OBJECT (item), "destroy",
1045 (GtkSignalFunc) gtk_combo_item_destroy, val);
1049 gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, NULL);
1051 gtk_signal_disconnect_by_data(GTK_OBJECT (item), val);
1056 gtk_combo_size_allocate (GtkWidget *widget,
1057 GtkAllocation *allocation)
1061 g_return_if_fail (GTK_IS_COMBO (widget));
1062 g_return_if_fail (allocation != NULL);
1064 GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
1066 combo = GTK_COMBO (widget);
1068 if (combo->entry->allocation.height > combo->entry->requisition.height)
1070 GtkAllocation button_allocation;
1072 button_allocation = combo->button->allocation;
1073 button_allocation.height = combo->entry->requisition.height;
1074 button_allocation.y = combo->entry->allocation.y +
1075 (combo->entry->allocation.height - combo->entry->requisition.height)
1077 gtk_widget_size_allocate (combo->button, &button_allocation);
1082 gtk_combo_disable_activate (GtkCombo* combo)
1084 g_return_if_fail (GTK_IS_COMBO (combo));
1086 if ( combo->activate_id ) {
1087 gtk_signal_disconnect (GTK_OBJECT(combo->entry), combo->activate_id);
1088 combo->activate_id = 0;
1093 gtk_combo_set_property (GObject *object,
1095 const GValue *value,
1098 GtkCombo *combo = GTK_COMBO (object);
1102 case PROP_ENABLE_ARROW_KEYS:
1103 gtk_combo_set_use_arrows (combo, g_value_get_boolean (value));
1105 case PROP_ENABLE_ARROWS_ALWAYS:
1106 gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value));
1108 case PROP_CASE_SENSITIVE:
1109 gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value));
1111 case PROP_ALLOW_EMPTY:
1112 combo->ok_if_empty = g_value_get_boolean (value);
1114 case PROP_VALUE_IN_LIST:
1115 combo->value_in_list = g_value_get_boolean (value);
1118 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1125 gtk_combo_get_property (GObject *object,
1130 GtkCombo *combo = GTK_COMBO (object);
1134 case PROP_ENABLE_ARROW_KEYS:
1135 g_value_set_boolean (value, combo->use_arrows);
1137 case PROP_ENABLE_ARROWS_ALWAYS:
1138 g_value_set_boolean (value, combo->use_arrows_always);
1140 case PROP_CASE_SENSITIVE:
1141 g_value_set_boolean (value, combo->case_sensitive);
1143 case PROP_ALLOW_EMPTY:
1144 g_value_set_boolean (value, combo->ok_if_empty);
1146 case PROP_VALUE_IN_LIST:
1147 g_value_set_boolean (value, combo->value_in_list);
1150 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);