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/.
33 #include "gtkeventbox.h"
34 #include "gtkbutton.h"
35 #include "gtklistitem.h"
36 #include "gtkscrolledwindow.h"
38 #include "gtksignal.h"
39 #include "gtkwindow.h"
40 #include "gdk/gdkkeysyms.h"
45 const gchar *gtk_combo_string_key = "gtk-combo-string-value";
47 #define COMBO_LIST_MAX_HEIGHT (400)
48 #define EMPTY_LIST_HEIGHT (15)
52 PROP_ENABLE_ARROW_KEYS,
53 PROP_ENABLE_ARROWS_ALWAYS,
59 static void gtk_combo_class_init (GtkComboClass *klass);
60 static void gtk_combo_init (GtkCombo *combo);
61 static void gtk_combo_destroy (GtkObject *combo);
62 static GtkListItem *gtk_combo_find (GtkCombo *combo);
63 static gchar * gtk_combo_func (GtkListItem *li);
64 static gint gtk_combo_focus_idle (GtkCombo *combo);
65 static gint gtk_combo_entry_focus_out (GtkEntry *entry,
68 static void gtk_combo_get_pos (GtkCombo *combo,
73 static void gtk_combo_popup_list (GtkCombo *combo);
74 static void gtk_combo_activate (GtkWidget *widget,
76 static gboolean gtk_combo_popup_button_press (GtkWidget *button,
77 GdkEventButton *event,
79 static gboolean gtk_combo_popup_button_leave (GtkWidget *button,
80 GdkEventCrossing *event,
82 static void gtk_combo_update_entry (GtkList *list,
84 static void gtk_combo_update_list (GtkEntry *entry,
86 static gint gtk_combo_button_press (GtkWidget *widget,
89 static void gtk_combo_button_event_after (GtkWidget *widget,
92 static gint gtk_combo_list_enter (GtkWidget *widget,
93 GdkEventCrossing *event,
95 static gint gtk_combo_list_key_press (GtkWidget *widget,
98 static gint gtk_combo_entry_key_press (GtkEntry *widget,
101 static gint gtk_combo_window_key_press (GtkWidget *window,
104 static void gtk_combo_item_destroy (GtkObject *object);
105 static void gtk_combo_size_allocate (GtkWidget *widget,
106 GtkAllocation *allocation);
107 static void gtk_combo_set_property (GObject *object,
111 static void gtk_combo_get_property (GObject *object,
115 static GtkHBoxClass *parent_class = NULL;
118 gtk_combo_class_init (GtkComboClass * klass)
120 GObjectClass *gobject_class;
121 GtkObjectClass *oclass;
122 GtkWidgetClass *widget_class;
124 gobject_class = (GObjectClass *) klass;
125 parent_class = gtk_type_class (GTK_TYPE_HBOX);
126 oclass = (GtkObjectClass *) klass;
127 widget_class = (GtkWidgetClass *) klass;
129 gobject_class->set_property = gtk_combo_set_property;
130 gobject_class->get_property = gtk_combo_get_property;
132 g_object_class_install_property (gobject_class,
133 PROP_ENABLE_ARROW_KEYS,
134 g_param_spec_boolean ("enable_arrow_keys",
135 _("Enable arrow keys"),
136 _("Whether the arrow keys move through the list of items"),
138 G_PARAM_READABLE | G_PARAM_WRITABLE));
139 g_object_class_install_property (gobject_class,
140 PROP_ENABLE_ARROWS_ALWAYS,
141 g_param_spec_boolean ("enable_arrows_always",
142 _("Always enable arrows"),
143 _("Whether the arrow keys work, even if the entry contents are not in the list"),
145 G_PARAM_READABLE | G_PARAM_WRITABLE));
146 g_object_class_install_property (gobject_class,
148 g_param_spec_boolean ("case_sensitive",
150 _("Whether list item matching is case sensitive"),
152 G_PARAM_READABLE | G_PARAM_WRITABLE));
154 g_object_class_install_property (gobject_class,
156 g_param_spec_boolean ("allow_empty",
158 _("Whether an empty value may be entered in this field"),
160 G_PARAM_READABLE | G_PARAM_WRITABLE));
162 g_object_class_install_property (gobject_class,
164 g_param_spec_boolean ("value_in_list",
166 _("Whether entered values must already be present in the list"),
168 G_PARAM_READABLE | G_PARAM_WRITABLE));
171 oclass->destroy = gtk_combo_destroy;
173 widget_class->size_allocate = gtk_combo_size_allocate;
177 gtk_combo_destroy (GtkObject *object)
179 GtkCombo *combo = GTK_COMBO (object);
183 gtk_widget_destroy (combo->popwin);
184 gtk_widget_unref (combo->popwin);
185 combo->popwin = NULL;
188 GTK_OBJECT_CLASS (parent_class)->destroy (object);
192 gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
197 if ((event->keyval == GDK_Tab ||
198 event->keyval == GDK_ISO_Left_Tab ||
199 event->keyval == GDK_KP_Tab) &&
200 (event->state & GDK_MOD1_MASK))
202 GtkEditable *editable = GTK_EDITABLE (entry);
205 gchar* nprefix = NULL;
208 if ( !GTK_LIST (combo->list)->children )
211 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
213 cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func);
214 g_completion_add_items (cmpl, GTK_LIST (combo->list)->children);
216 pos = gtk_editable_get_position (editable);
217 prefix = gtk_editable_get_chars (editable, 0, pos);
219 g_completion_complete (cmpl, prefix, &nprefix);
221 if (nprefix && strlen (nprefix) > strlen (prefix))
223 gtk_editable_insert_text (editable, nprefix + pos,
224 strlen (nprefix) - strlen (prefix), &pos);
225 gtk_editable_set_position (editable, pos);
231 g_completion_free (cmpl);
236 if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
239 li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
241 if ((event->keyval == GDK_Up)
242 || (event->keyval == GDK_KP_Up)
243 || ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'p') || (event->keyval == 'P'))))
247 if (!li && combo->use_arrows_always)
249 li = g_list_last (GTK_LIST (combo->list)->children);
253 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
254 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
258 else if ((event->keyval == GDK_Down)
259 || (event->keyval == GDK_KP_Down)
260 || ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'n') || (event->keyval == 'N'))))
264 if (!li && combo->use_arrows_always)
266 li = GTK_LIST (combo->list)->children;
270 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
271 gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
279 gtk_combo_window_key_press (GtkWidget *window,
283 if (event->keyval == GDK_Return || event->keyval == GDK_KP_Enter)
285 if (GTK_WIDGET_VISIBLE (combo->popwin))
287 gtk_widget_hide (combo->popwin);
289 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
291 gtk_grab_remove (combo->popwin);
292 gdk_pointer_ungrab (event->time);
296 gtk_signal_emit_stop_by_name (GTK_OBJECT (window), "key_press_event");
305 gtk_combo_find (GtkCombo * combo)
310 int (*string_compare) (const char *, const char *);
312 if (combo->case_sensitive)
313 string_compare = strcmp;
315 string_compare = g_strcasecmp;
317 text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
318 clist = GTK_LIST (combo->list)->children;
320 while (clist && clist->data)
322 ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
325 if (!(*string_compare) (ltext, text))
326 return (GtkListItem *) clist->data;
334 gtk_combo_func (GtkListItem * li)
339 ltext = (gchar *) gtk_object_get_data (GTK_OBJECT (li), gtk_combo_string_key);
342 label = GTK_BIN (li)->child;
343 if (!label || !GTK_IS_LABEL (label))
345 gtk_label_get (GTK_LABEL (label), <ext);
351 gtk_combo_focus_idle (GtkCombo * combo)
355 GDK_THREADS_ENTER ();
356 gtk_widget_grab_focus (combo->entry);
357 GDK_THREADS_LEAVE ();
363 gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
366 if (combo->value_in_list && !gtk_combo_find (combo))
368 /* gdk_beep(); *//* this can be annoying */
369 if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
372 printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
374 gtk_grab_add (GTK_WIDGET (combo));
375 /* this is needed because if we call gtk_widget_grab_focus()
376 it isn't guaranteed it's the *last* call before the main-loop,
377 so the focus can be lost anyway...
378 the signal_emit_stop doesn't seem to work either...
380 gtk_idle_add ((GtkFunction) gtk_combo_focus_idle, combo);
381 /*gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "focus_out_event"); */
388 gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
392 GtkScrolledWindow *popup;
395 GtkRequisition list_requisition;
396 gboolean show_hscroll = FALSE;
397 gboolean show_vscroll = FALSE;
405 widget = GTK_WIDGET (combo);
406 popup = GTK_SCROLLED_WINDOW (combo->popup);
407 popwin = GTK_BIN (combo->popwin);
409 gdk_window_get_origin (combo->entry->window, x, y);
410 real_height = MIN (combo->entry->requisition.height,
411 combo->entry->allocation.height);
413 avail_height = gdk_screen_height () - *y;
415 gtk_widget_size_request (combo->list, &list_requisition);
416 min_height = MIN (list_requisition.height,
417 popup->vscrollbar->requisition.height);
418 if (!GTK_LIST (combo->list)->children)
419 list_requisition.height += EMPTY_LIST_HEIGHT;
421 alloc_width = (widget->allocation.width -
422 2 * popwin->child->style->xthickness -
423 2 * GTK_CONTAINER (popwin->child)->border_width -
424 2 * GTK_CONTAINER (combo->popup)->border_width -
425 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width -
426 2 * GTK_BIN (popup)->child->style->xthickness);
428 work_height = (2 * popwin->child->style->ythickness +
429 2 * GTK_CONTAINER (popwin->child)->border_width +
430 2 * GTK_CONTAINER (combo->popup)->border_width +
431 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
432 2 * GTK_BIN (popup)->child->style->xthickness);
436 old_width = alloc_width;
437 old_height = work_height;
440 alloc_width < list_requisition.width)
442 work_height += (popup->hscrollbar->requisition.height +
443 GTK_SCROLLED_WINDOW_GET_CLASS (combo->popup)->scrollbar_spacing);
447 work_height + list_requisition.height > avail_height)
449 if (work_height + min_height > avail_height &&
450 *y - real_height > avail_height)
452 *y -= (work_height + list_requisition.height + real_height);
455 alloc_width -= (popup->vscrollbar->requisition.width +
456 GTK_SCROLLED_WINDOW_GET_CLASS (combo->popup)->scrollbar_spacing);
459 } while (old_width != alloc_width || old_height != work_height);
461 *width = widget->allocation.width;
463 *height = avail_height;
465 *height = work_height + list_requisition.height;
472 gtk_combo_popup_list (GtkCombo * combo)
474 gint height, width, x, y;
475 gint old_width, old_height;
477 old_width = combo->popwin->allocation.width;
478 old_height = combo->popwin->allocation.height;
480 gtk_combo_get_pos (combo, &x, &y, &height, &width);
482 /* workaround for gtk_scrolled_window_size_allocate bug */
483 if (old_width != width || old_height != height)
485 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
486 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
489 gtk_widget_set_uposition (combo->popwin, x, y);
490 gtk_widget_set_usize (combo->popwin, width, height);
491 gtk_widget_realize (combo->popwin);
492 gdk_window_resize (combo->popwin->window, width, height);
493 gtk_widget_show (combo->popwin);
495 gtk_widget_grab_focus (combo->popwin);
499 gtk_combo_activate (GtkWidget *widget,
502 gtk_combo_popup_list (combo);
504 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
505 gtk_widget_grab_focus (combo->entry);
507 gtk_grab_add (combo->popwin);
508 gdk_pointer_grab (combo->popwin->window, TRUE,
509 GDK_BUTTON_PRESS_MASK |
510 GDK_BUTTON_RELEASE_MASK |
511 GDK_POINTER_MOTION_MASK,
512 NULL, NULL, GDK_CURRENT_TIME);
516 gtk_combo_popup_button_press (GtkWidget *button,
517 GdkEventButton *event,
520 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
521 gtk_widget_grab_focus (combo->entry);
523 if (event->button != 1)
526 combo->current_button = event->button;
528 gtk_combo_popup_list (combo);
529 gtk_button_pressed (GTK_BUTTON (button));
531 gtk_grab_add (combo->popwin);
532 gdk_pointer_grab (combo->popwin->window, TRUE,
533 GDK_BUTTON_PRESS_MASK |
534 GDK_BUTTON_RELEASE_MASK |
535 GDK_POINTER_MOTION_MASK,
536 NULL, NULL, GDK_CURRENT_TIME);
538 GTK_LIST (combo->list)->drag_selection = TRUE;
539 gtk_grab_add (combo->list);
545 gtk_combo_popup_button_leave (GtkWidget *button,
546 GdkEventCrossing *event,
549 return combo->current_button != 0;
554 gtk_combo_update_entry (GtkList * list, GtkCombo * combo)
558 gtk_grab_remove (GTK_WIDGET (combo));
559 gtk_signal_handler_block (GTK_OBJECT (list), combo->list_change_id);
562 text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
565 gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
567 gtk_signal_handler_unblock (GTK_OBJECT (list), combo->list_change_id);
571 gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
573 GtkList *list = GTK_LIST (combo->list);
574 GList *slist = list->selection;
577 gtk_grab_remove (GTK_WIDGET (combo));
579 gtk_signal_handler_block (GTK_OBJECT (entry), combo->entry_change_id);
580 if (slist && slist->data)
581 gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
582 li = gtk_combo_find (combo);
584 gtk_list_select_child (list, GTK_WIDGET (li));
585 gtk_signal_handler_unblock (GTK_OBJECT (entry), combo->entry_change_id);
589 gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
593 child = gtk_get_event_widget (event);
595 /* We don't ask for button press events on the grab widget, so
596 * if an event is reported directly to the grab widget, it must
597 * be on a window outside the application (and thus we remove
598 * the popup window). Otherwise, we check if the widget is a child
599 * of the grab widget, and only remove the popup window if it
608 child = child->parent;
612 gtk_widget_hide (combo->popwin);
613 gtk_grab_remove (combo->popwin);
614 gdk_pointer_ungrab (event->button.time);
620 gtk_combo_button_event_after (GtkWidget *widget,
626 if (event->type != GDK_BUTTON_RELEASE)
629 if ((combo->current_button != 0) && (event->button.button == 1))
631 /* This was the initial button press */
633 GdkEventCrossing tmp_event;
635 combo->current_button = 0;
637 if (widget != combo->button)
638 gtk_widget_event (combo->button, event);
640 /* Un-pre-highlight */
642 tmp_event.type = GDK_LEAVE_NOTIFY;
643 tmp_event.window = combo->button->window;
644 tmp_event.send_event = TRUE;
645 tmp_event.subwindow = NULL;
646 tmp_event.detail = GDK_NOTIFY_ANCESTOR;
648 gtk_widget_event (combo->button, (GdkEvent *)&tmp_event);
650 /* Check to see if we released inside the button */
651 child = gtk_get_event_widget ((GdkEvent*) event);
653 while (child && child != (combo->button))
654 child = child->parent;
656 if (child == combo->button)
658 gtk_grab_add (combo->popwin);
659 gdk_pointer_grab (combo->popwin->window, TRUE,
660 GDK_BUTTON_PRESS_MASK |
661 GDK_BUTTON_RELEASE_MASK |
662 GDK_POINTER_MOTION_MASK,
663 NULL, NULL, GDK_CURRENT_TIME);
669 /* The user has clicked inside the popwin and released */
671 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
673 gtk_grab_remove (combo->popwin);
674 gdk_pointer_ungrab (event->button.time);
678 gtk_widget_hide (combo->popwin);
682 gtk_combo_list_enter (GtkWidget *widget,
683 GdkEventCrossing *event,
686 GtkWidget *event_widget;
688 event_widget = gtk_get_event_widget ((GdkEvent*) event);
690 if ((event_widget == combo->list) &&
691 (combo->current_button != 0) &&
692 (!GTK_WIDGET_HAS_GRAB (combo->list)))
696 GdkModifierType mask;
698 gtk_grab_remove (combo->popwin);
700 /* Transfer the grab over to the list by synthesizing
701 * a button press event
703 gdk_window_get_pointer (combo->list->window, &x, &y, &mask);
705 tmp_event.button.type = GDK_BUTTON_PRESS;
706 tmp_event.button.window = combo->list->window;
707 tmp_event.button.send_event = TRUE;
708 tmp_event.button.time = GDK_CURRENT_TIME; /* bad */
709 tmp_event.button.x = x;
710 tmp_event.button.y = y;
711 /* We leave all the XInput fields unfilled here, in the expectation
712 * that GtkList doesn't care.
714 tmp_event.button.button = combo->current_button;
715 tmp_event.button.state = mask;
717 gtk_widget_event (combo->list, &tmp_event);
724 gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
726 if (event->keyval == GDK_Escape)
728 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
730 gtk_grab_remove (combo->popwin);
731 gdk_pointer_ungrab (GDK_CURRENT_TIME);
733 else if (GTK_WIDGET_HAS_GRAB (combo->list))
734 gtk_list_end_drag_selection (GTK_LIST (combo->list));
735 gtk_widget_hide (combo->popwin);
736 if (GTK_WIDGET_HAS_GRAB (combo->button))
738 combo->current_button = 0;
739 GTK_BUTTON (combo->button)->in_button = FALSE;
740 gtk_button_released (GTK_BUTTON (combo->button));
741 gtk_grab_remove (combo->button);
749 gtk_combo_init (GtkCombo * combo)
753 GtkWidget *event_box;
756 combo->case_sensitive = FALSE;
757 combo->value_in_list = FALSE;
758 combo->ok_if_empty = TRUE;
759 combo->use_arrows = TRUE;
760 combo->use_arrows_always = FALSE;
761 combo->entry = gtk_entry_new ();
762 combo->button = gtk_button_new ();
763 combo->current_button = 0;
764 arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
765 gtk_widget_show (arrow);
766 gtk_container_add (GTK_CONTAINER (combo->button), arrow);
767 gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
768 gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
769 GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS);
770 gtk_widget_show (combo->entry);
771 gtk_widget_show (combo->button);
772 combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
773 (GtkSignalFunc) gtk_combo_update_list, combo);
774 gtk_signal_connect (GTK_OBJECT (combo->entry), "key_press_event",
775 (GtkSignalFunc) gtk_combo_entry_key_press, combo);
776 gtk_signal_connect_after (GTK_OBJECT (combo->entry), "focus_out_event",
777 (GtkSignalFunc) gtk_combo_entry_focus_out, combo);
778 combo->activate_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "activate",
779 (GtkSignalFunc) gtk_combo_activate, combo);
780 gtk_signal_connect (GTK_OBJECT (combo->button), "button_press_event",
781 (GtkSignalFunc) gtk_combo_popup_button_press, combo);
782 gtk_signal_connect (GTK_OBJECT (combo->button), "leave_notify_event",
783 (GtkSignalFunc) gtk_combo_popup_button_leave, combo);
785 combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
786 gtk_widget_ref (combo->popwin);
787 gtk_window_set_policy (GTK_WINDOW (combo->popwin), 1, 1, 0);
789 gtk_signal_connect (GTK_OBJECT (combo->popwin), "key_press_event",
790 GTK_SIGNAL_FUNC (gtk_combo_window_key_press), combo);
792 gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK);
794 event_box = gtk_event_box_new ();
795 gtk_container_add (GTK_CONTAINER (combo->popwin), event_box);
796 gtk_widget_show (event_box);
798 gtk_widget_realize (event_box);
799 cursor = gdk_cursor_new (GDK_TOP_LEFT_ARROW);
800 gdk_window_set_cursor (event_box->window, cursor);
801 gdk_cursor_destroy (cursor);
803 frame = gtk_frame_new (NULL);
804 gtk_container_add (GTK_CONTAINER (event_box), frame);
805 gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
806 gtk_widget_show (frame);
808 combo->popup = gtk_scrolled_window_new (NULL, NULL);
809 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
810 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
811 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS);
812 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS);
813 gtk_container_add (GTK_CONTAINER (frame), combo->popup);
814 gtk_widget_show (combo->popup);
816 combo->list = gtk_list_new ();
817 /* We'll use enter notify events to figure out when to transfer
818 * the grab to the list
820 gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK);
822 gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
823 gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list);
824 gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list),
825 gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
826 gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list),
827 gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
828 gtk_widget_show (combo->list);
830 combo->list_change_id = gtk_signal_connect (GTK_OBJECT (combo->list), "selection_changed",
831 (GtkSignalFunc) gtk_combo_update_entry, combo);
832 gtk_signal_connect (GTK_OBJECT (combo->popwin), "key_press_event",
833 (GtkSignalFunc) gtk_combo_list_key_press, combo);
834 gtk_signal_connect (GTK_OBJECT (combo->popwin), "button_press_event",
835 GTK_SIGNAL_FUNC (gtk_combo_button_press), combo);
837 gtk_signal_connect (GTK_OBJECT (combo->list), "event_after",
838 (GtkSignalFunc) gtk_combo_button_event_after, combo);
839 /* We connect here on the button, because we'll have a grab on it
840 * when the event occurs. But we are actually interested in enters
841 * for the combo->list.
843 gtk_signal_connect (GTK_OBJECT (combo->button), "enter_notify_event",
844 GTK_SIGNAL_FUNC (gtk_combo_list_enter), combo);
848 gtk_combo_get_type (void)
850 static GtkType combo_type = 0;
854 static const GtkTypeInfo combo_info =
858 sizeof (GtkComboClass),
859 (GtkClassInitFunc) gtk_combo_class_init,
860 (GtkObjectInitFunc) gtk_combo_init,
861 /* reserved_1 */ NULL,
862 /* reserved_2 */ NULL,
863 (GtkClassInitFunc) NULL,
865 combo_type = gtk_type_unique (GTK_TYPE_HBOX, &combo_info);
873 return GTK_WIDGET (gtk_type_new (GTK_TYPE_COMBO));
877 gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty)
879 g_return_if_fail (GTK_IS_COMBO (combo));
881 combo->value_in_list = val;
882 combo->ok_if_empty = ok_if_empty;
883 g_object_freeze_notify (G_OBJECT (combo));
884 g_object_notify (G_OBJECT (combo), "value_in_list");
885 g_object_notify (G_OBJECT (combo), "allow_empty");
886 g_object_thaw_notify (G_OBJECT (combo));
890 gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val)
892 g_return_if_fail (GTK_IS_COMBO (combo));
894 combo->case_sensitive = val;
895 g_object_notify (G_OBJECT (combo), "case_sensitive");
899 gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val)
901 g_return_if_fail (GTK_IS_COMBO (combo));
903 combo->use_arrows = val;
904 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
908 gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val)
910 g_return_if_fail (GTK_IS_COMBO (combo));
912 combo->use_arrows_always = val;
913 combo->use_arrows = TRUE;
914 g_object_freeze_notify (G_OBJECT (combo));
915 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
916 g_object_notify (G_OBJECT (combo), "enable_arrows_always");
917 g_object_thaw_notify (G_OBJECT (combo));
921 gtk_combo_set_popdown_strings (GtkCombo * combo, GList * strings)
926 g_return_if_fail (GTK_IS_COMBO (combo));
927 g_return_if_fail (strings != NULL);
929 gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
933 li = gtk_list_item_new_with_label ((gchar *) list->data);
934 gtk_widget_show (li);
935 gtk_container_add (GTK_CONTAINER (combo->list), li);
941 gtk_combo_item_destroy (GtkObject * object)
945 key = gtk_object_get_data (object, gtk_combo_string_key);
948 gtk_object_remove_data (object, gtk_combo_string_key);
954 gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
959 g_return_if_fail (GTK_IS_COMBO (combo));
960 g_return_if_fail (item != NULL);
962 val = gtk_object_get_data (GTK_OBJECT (item), gtk_combo_string_key);
970 val = g_strdup (item_value);
971 gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, val);
973 gtk_signal_connect (GTK_OBJECT (item), "destroy",
974 (GtkSignalFunc) gtk_combo_item_destroy, val);
978 gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, NULL);
980 gtk_signal_disconnect_by_data(GTK_OBJECT (item), val);
985 gtk_combo_size_allocate (GtkWidget *widget,
986 GtkAllocation *allocation)
990 g_return_if_fail (GTK_IS_COMBO (widget));
991 g_return_if_fail (allocation != NULL);
993 GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
995 combo = GTK_COMBO (widget);
997 if (combo->entry->allocation.height > combo->entry->requisition.height)
999 GtkAllocation button_allocation;
1001 button_allocation = combo->button->allocation;
1002 button_allocation.height = combo->entry->requisition.height;
1003 button_allocation.y = combo->entry->allocation.y +
1004 (combo->entry->allocation.height - combo->entry->requisition.height)
1006 gtk_widget_size_allocate (combo->button, &button_allocation);
1011 gtk_combo_disable_activate (GtkCombo* combo)
1013 g_return_if_fail (GTK_IS_COMBO (combo));
1015 if ( combo->activate_id ) {
1016 gtk_signal_disconnect (GTK_OBJECT(combo->entry), combo->activate_id);
1017 combo->activate_id = 0;
1022 gtk_combo_set_property (GObject *object,
1024 const GValue *value,
1027 GtkCombo *combo = GTK_COMBO (object);
1031 case PROP_ENABLE_ARROW_KEYS:
1032 gtk_combo_set_use_arrows (combo, g_value_get_boolean (value));
1034 case PROP_ENABLE_ARROWS_ALWAYS:
1035 gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value));
1037 case PROP_CASE_SENSITIVE:
1038 gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value));
1040 case PROP_ALLOW_EMPTY:
1041 combo->ok_if_empty = g_value_get_boolean (value);
1043 case PROP_VALUE_IN_LIST:
1044 combo->value_in_list = g_value_get_boolean (value);
1047 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1054 gtk_combo_get_property (GObject *object,
1059 GtkCombo *combo = GTK_COMBO (object);
1063 case PROP_ENABLE_ARROW_KEYS:
1064 g_value_set_boolean (value, combo->use_arrows);
1066 case PROP_ENABLE_ARROWS_ALWAYS:
1067 g_value_set_boolean (value, combo->use_arrows_always);
1069 case PROP_CASE_SENSITIVE:
1070 g_value_set_boolean (value, combo->case_sensitive);
1072 case PROP_ALLOW_EMPTY:
1073 g_value_set_boolean (value, combo->ok_if_empty);
1075 case PROP_VALUE_IN_LIST:
1076 g_value_set_boolean (value, combo->value_in_list);
1079 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);