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[wxWidgets.git] / src / gtk / listbox.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: listbox.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10
11 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
12 #pragma implementation "listbox.h"
13 #endif
14
15 // For compilers that support precompilation, includes "wx.h".
16 #include "wx/wxprec.h"
17
18 #include "wx/defs.h"
19
20 #if wxUSE_LISTBOX
21
22 #include "wx/listbox.h"
23 #include "wx/dynarray.h"
24 #include "wx/arrstr.h"
25 #include "wx/utils.h"
26 #include "wx/intl.h"
27 #include "wx/checklst.h"
28 #include "wx/settings.h"
29 #include "wx/gtk/private.h"
30
31 #if wxUSE_TOOLTIPS
32 #include "wx/tooltip.h"
33 #endif
34
35 #include <gdk/gdk.h>
36 #include <gtk/gtk.h>
37 #include <gdk/gdkkeysyms.h>
38
39 //-----------------------------------------------------------------------------
40 // idle system
41 //-----------------------------------------------------------------------------
42
43 extern void wxapp_install_idle_handler();
44 extern bool g_isIdle;
45
46 //-----------------------------------------------------------------------------
47 // data
48 //-----------------------------------------------------------------------------
49
50 extern bool g_blockEventsOnDrag;
51 extern bool g_blockEventsOnScroll;
52 extern wxCursor g_globalCursor;
53 extern wxWindowGTK *g_delayedFocus;
54
55 static bool g_hasDoubleClicked = FALSE;
56
57 //-----------------------------------------------------------------------------
58 // idle callback for SetFirstItem
59 //-----------------------------------------------------------------------------
60
61 struct wxlistbox_idle_struct
62 {
63 wxListBox *m_listbox;
64 int m_item;
65 gint m_tag;
66 };
67
68 extern "C" gint wxlistbox_idle_callback( gpointer gdata )
69 {
70 wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
71 gdk_threads_enter();
72
73 gtk_idle_remove( data->m_tag );
74
75 // check that the items haven't been deleted from the listbox since we had
76 // installed this callback
77 wxListBox *lbox = data->m_listbox;
78 if ( data->m_item < lbox->GetCount() )
79 {
80 lbox->SetFirstItem( data->m_item );
81 }
82
83 delete data;
84
85 gdk_threads_leave();
86
87 return TRUE;
88 }
89
90 //-----------------------------------------------------------------------------
91 // "button_release_event"
92 //-----------------------------------------------------------------------------
93
94 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
95 a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
96 listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
97 this can lead to race conditions so that we emit the dclick event
98 after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
99
100 static gint
101 gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
102 GdkEventButton * WXUNUSED(gdk_event),
103 wxListBox *listbox )
104 {
105 if (g_isIdle) wxapp_install_idle_handler();
106
107 if (g_blockEventsOnDrag) return FALSE;
108 if (g_blockEventsOnScroll) return FALSE;
109
110 if (!listbox->m_hasVMT) return FALSE;
111
112 if (!g_hasDoubleClicked) return FALSE;
113
114 wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
115 event.SetEventObject( listbox );
116
117 wxArrayInt aSelections;
118 int n, count = listbox->GetSelections(aSelections);
119 if ( count > 0 )
120 {
121 n = aSelections[0];
122 if ( listbox->HasClientObjectData() )
123 event.SetClientObject( listbox->GetClientObject(n) );
124 else if ( listbox->HasClientUntypedData() )
125 event.SetClientData( listbox->GetClientData(n) );
126 event.SetString( listbox->GetString(n) );
127 }
128 else
129 {
130 n = -1;
131 }
132
133 event.m_commandInt = n;
134
135 listbox->GetEventHandler()->ProcessEvent( event );
136
137 return FALSE;
138 }
139
140 //-----------------------------------------------------------------------------
141 // "button_press_event"
142 //-----------------------------------------------------------------------------
143
144 static gint
145 gtk_listbox_button_press_callback( GtkWidget *widget,
146 GdkEventButton *gdk_event,
147 wxListBox *listbox )
148 {
149 if (g_isIdle) wxapp_install_idle_handler();
150
151 if (g_blockEventsOnDrag) return FALSE;
152 if (g_blockEventsOnScroll) return FALSE;
153
154 if (!listbox->m_hasVMT) return FALSE;
155
156 int sel = listbox->GtkGetIndex( widget );
157
158 #if wxUSE_CHECKLISTBOX
159 if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
160 {
161 wxCheckListBox *clb = (wxCheckListBox *)listbox;
162
163 clb->Check( sel, !clb->IsChecked(sel) );
164
165 wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
166 event.SetEventObject( listbox );
167 event.SetInt( sel );
168 listbox->GetEventHandler()->ProcessEvent( event );
169 }
170 #endif // wxUSE_CHECKLISTBOX
171
172 /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
173 g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
174
175 return FALSE;
176 }
177
178 //-----------------------------------------------------------------------------
179 // "key_press_event"
180 //-----------------------------------------------------------------------------
181
182 static gint
183 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
184 {
185 if (g_isIdle)
186 wxapp_install_idle_handler();
187
188 if (g_blockEventsOnDrag)
189 return FALSE;
190
191 bool ret = FALSE;
192
193 if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
194 {
195 wxNavigationKeyEvent new_event;
196 /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
197 new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
198 /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
199 new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
200 new_event.SetCurrentFocus( listbox );
201 ret = listbox->GetEventHandler()->ProcessEvent( new_event );
202 }
203
204 if ((gdk_event->keyval == GDK_Return) && (!ret))
205 {
206 // eat return in all modes
207 ret = TRUE;
208 }
209
210 #if wxUSE_CHECKLISTBOX
211 if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
212 {
213 int sel = listbox->GtkGetIndex( widget );
214
215 wxCheckListBox *clb = (wxCheckListBox *)listbox;
216
217 clb->Check( sel, !clb->IsChecked(sel) );
218
219 wxCommandEvent new_event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
220 new_event.SetEventObject( listbox );
221 new_event.SetInt( sel );
222 ret = listbox->GetEventHandler()->ProcessEvent( new_event );
223 }
224 #endif // wxUSE_CHECKLISTBOX
225
226 if (ret)
227 {
228 gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
229 return TRUE;
230 }
231
232 return FALSE;
233 }
234
235 //-----------------------------------------------------------------------------
236 // "select" and "deselect"
237 //-----------------------------------------------------------------------------
238
239 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection );
240
241 static void gtk_listitem_select_callback( GtkWidget *widget, wxListBox *listbox )
242 {
243 gtk_listitem_select_cb( widget, listbox, TRUE );
244 }
245
246 static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
247 {
248 gtk_listitem_select_cb( widget, listbox, FALSE );
249 }
250
251 static void gtk_listitem_select_cb( GtkWidget *widget,
252 wxListBox *listbox,
253 bool is_selection )
254 {
255 if (g_isIdle) wxapp_install_idle_handler();
256
257 if (!listbox->m_hasVMT) return;
258 if (g_blockEventsOnDrag) return;
259
260 if (listbox->m_blockEvent) return;
261
262 wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
263 event.SetEventObject( listbox );
264
265 // indicate whether this is a selection or a deselection
266 event.SetExtraLong( is_selection );
267
268 if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
269 {
270 int sel = listbox->GtkGetIndex( widget );
271
272 if (listbox->m_prevSelection != sel)
273 gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
274
275 listbox->m_prevSelection = sel;
276 }
277
278 wxArrayInt aSelections;
279 int n, count = listbox->GetSelections(aSelections);
280 if ( count > 0 )
281 {
282 n = aSelections[0];
283 if ( listbox->HasClientObjectData() )
284 event.SetClientObject( listbox->GetClientObject(n) );
285 else if ( listbox->HasClientUntypedData() )
286 event.SetClientData( listbox->GetClientData(n) );
287 event.SetString( listbox->GetString(n) );
288 }
289 else
290 {
291 n = -1;
292 }
293
294 event.m_commandInt = n;
295
296 // No longer required with new code in wxLB_SINGLE
297 // listbox->GetEventHandler()->AddPendingEvent( event );
298 listbox->GetEventHandler()->ProcessEvent( event );
299 }
300
301 //-----------------------------------------------------------------------------
302 // wxListBox
303 //-----------------------------------------------------------------------------
304
305 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
306
307 // ----------------------------------------------------------------------------
308 // construction
309 // ----------------------------------------------------------------------------
310
311 wxListBox::wxListBox()
312 {
313 m_list = (GtkList *) NULL;
314 #if wxUSE_CHECKLISTBOX
315 m_hasCheckBoxes = FALSE;
316 #endif // wxUSE_CHECKLISTBOX
317 }
318
319 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
320 const wxPoint &pos, const wxSize &size,
321 int n, const wxString choices[],
322 long style, const wxValidator& validator,
323 const wxString &name )
324 {
325 m_needParent = TRUE;
326 m_acceptsFocus = TRUE;
327 m_prevSelection = 0; // or -1 ??
328 m_blockEvent = FALSE;
329
330 if (!PreCreation( parent, pos, size ) ||
331 !CreateBase( parent, id, pos, size, style, validator, name ))
332 {
333 wxFAIL_MSG( wxT("wxListBox creation failed") );
334 return FALSE;
335 }
336
337 m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
338 if (style & wxLB_ALWAYS_SB)
339 {
340 gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
341 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
342 }
343 else
344 {
345 gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
346 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
347 }
348
349 m_list = GTK_LIST( gtk_list_new() );
350
351 GtkSelectionMode mode;
352 if (style & wxLB_MULTIPLE)
353 {
354 mode = GTK_SELECTION_MULTIPLE;
355 }
356 else if (style & wxLB_EXTENDED)
357 {
358 mode = GTK_SELECTION_EXTENDED;
359 }
360 else
361 {
362 // if style was 0 set single mode
363 m_windowStyle |= wxLB_SINGLE;
364 mode = GTK_SELECTION_MULTIPLE;
365 }
366
367 gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
368
369 gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
370
371 /* make list scroll when moving the focus down using cursor keys */
372 gtk_container_set_focus_vadjustment(
373 GTK_CONTAINER(m_list),
374 gtk_scrolled_window_get_vadjustment(
375 GTK_SCROLLED_WINDOW(m_widget)));
376
377 gtk_widget_show( GTK_WIDGET(m_list) );
378
379 if ( style & wxLB_SORT )
380 {
381 // this will change DoAppend() behaviour
382 m_strings = new wxSortedArrayString;
383 }
384 else
385 {
386 m_strings = (wxSortedArrayString *)NULL;
387 }
388
389 for (int i = 0; i < n; i++)
390 {
391 // add one by one
392 DoAppend(choices[i]);
393 }
394
395 // call it after appending the strings to the listbox, otherwise it doesn't
396 // work correctly
397 SetBestSize( size );
398
399 m_parent->DoAddChild( this );
400
401 PostCreation();
402
403 SetBackgroundColour( wxSystemSettings::GetColour( wxSYS_COLOUR_LISTBOX ) );
404 SetForegroundColour( parent->GetForegroundColour() );
405 SetFont( parent->GetFont() );
406
407 Show( TRUE );
408
409 return TRUE;
410 }
411
412 wxListBox::~wxListBox()
413 {
414 m_hasVMT = FALSE;
415
416 Clear();
417
418 if (m_strings)
419 delete m_strings;
420 }
421
422 // ----------------------------------------------------------------------------
423 // adding items
424 // ----------------------------------------------------------------------------
425
426 void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
427 {
428 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
429
430 // VZ: notice that InsertItems knows nothing about sorting, so calling it
431 // from outside (and not from our own Append) is likely to break
432 // everything
433
434 // code elsewhere supposes we have as many items in m_clientList as items
435 // in the listbox
436 wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
437 wxT("bug in client data management") );
438
439 GList *children = m_list->children;
440 int length = g_list_length(children);
441
442 wxCHECK_RET( pos <= length, wxT("invalid index in wxListBox::InsertItems") );
443
444 size_t nItems = items.GetCount();
445 int index;
446
447 if (m_strings)
448 {
449 for (size_t n = 0; n < nItems; n++)
450 {
451 index = m_strings->Add( items[n] );
452
453 if (index != GetCount())
454 {
455 GtkAddItem( items[n], index );
456 wxList::compatibility_iterator node = m_clientList.Item( index );
457 m_clientList.Insert( node, (wxObject*) NULL );
458 }
459 else
460 {
461 GtkAddItem( items[n] );
462 m_clientList.Append( (wxObject*) NULL );
463 }
464 }
465 }
466 else
467 {
468 if (pos == length)
469 {
470 for ( size_t n = 0; n < nItems; n++ )
471 {
472 GtkAddItem( items[n] );
473
474 m_clientList.Append((wxObject *)NULL);
475 }
476 }
477 else
478 {
479 wxList::compatibility_iterator node = m_clientList.Item( pos );
480 for ( size_t n = 0; n < nItems; n++ )
481 {
482 GtkAddItem( items[n], pos+n );
483
484 m_clientList.Insert( node, (wxObject *)NULL );
485 }
486 }
487 }
488
489 wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
490 wxT("bug in client data management") );
491 }
492
493 int wxListBox::DoAppend( const wxString& item )
494 {
495 if (m_strings)
496 {
497 // need to determine the index
498 int index = m_strings->Add( item );
499
500 // only if not at the end anyway
501 if (index != GetCount())
502 {
503 GtkAddItem( item, index );
504
505 wxList::compatibility_iterator node = m_clientList.Item( index );
506 m_clientList.Insert( node, (wxObject *)NULL );
507
508 return index;
509 }
510 }
511
512 GtkAddItem(item);
513
514 m_clientList.Append((wxObject *)NULL);
515
516 return GetCount() - 1;
517 }
518
519 void wxListBox::GtkAddItem( const wxString &item, int pos )
520 {
521 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
522
523 GtkWidget *list_item;
524
525 wxString label(item);
526 #if wxUSE_CHECKLISTBOX
527 if (m_hasCheckBoxes)
528 {
529 label.Prepend(wxCHECKLBOX_STRING);
530 }
531 #endif // wxUSE_CHECKLISTBOX
532
533 list_item = gtk_list_item_new_with_label( wxGTK_CONV( label ) );
534
535 GList *gitem_list = g_list_alloc ();
536 gitem_list->data = list_item;
537
538 if (pos == -1)
539 gtk_list_append_items( GTK_LIST (m_list), gitem_list );
540 else
541 gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
542
543 gtk_signal_connect( GTK_OBJECT(list_item), "select",
544 GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
545
546 if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
547 gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
548 GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
549
550 gtk_signal_connect( GTK_OBJECT(list_item),
551 "button_press_event",
552 (GtkSignalFunc)gtk_listbox_button_press_callback,
553 (gpointer) this );
554
555 gtk_signal_connect_after( GTK_OBJECT(list_item),
556 "button_release_event",
557 (GtkSignalFunc)gtk_listbox_button_release_callback,
558 (gpointer) this );
559
560 gtk_signal_connect( GTK_OBJECT(list_item),
561 "key_press_event",
562 (GtkSignalFunc)gtk_listbox_key_press_callback,
563 (gpointer)this );
564
565 ConnectWidget( list_item );
566
567 gtk_widget_show( list_item );
568
569 if (GTK_WIDGET_REALIZED(m_widget))
570 {
571 gtk_widget_realize( list_item );
572 gtk_widget_realize( GTK_BIN(list_item)->child );
573
574 // Apply current widget style to the new list_item
575 if (m_widgetStyle)
576 {
577 gtk_widget_set_style( GTK_WIDGET( list_item ), m_widgetStyle );
578 GtkBin *bin = GTK_BIN( list_item );
579 GtkWidget *label = GTK_WIDGET( bin->child );
580 gtk_widget_set_style( label, m_widgetStyle );
581 }
582
583 #if wxUSE_TOOLTIPS
584 if (m_tooltip) m_tooltip->Apply( this );
585 #endif
586 }
587 }
588
589 void wxListBox::DoSetItems( const wxArrayString& items,
590 void **clientData)
591 {
592 Clear();
593
594 DoInsertItems(items, 0);
595
596 if ( clientData )
597 {
598 size_t count = items.GetCount();
599 for ( size_t n = 0; n < count; n++ )
600 {
601 SetClientData(n, clientData[n]);
602 }
603 }
604 }
605
606 // ----------------------------------------------------------------------------
607 // deleting items
608 // ----------------------------------------------------------------------------
609
610 void wxListBox::Clear()
611 {
612 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
613
614 gtk_list_clear_items( m_list, 0, GetCount() );
615
616 if ( GTK_LIST(m_list)->last_focus_child != NULL )
617 {
618 // This should be NULL, I think.
619 GTK_LIST(m_list)->last_focus_child = NULL;
620 }
621
622 if ( HasClientObjectData() )
623 {
624 // destroy the data (due to Robert's idea of using wxList<wxObject>
625 // and not wxList<wxClientData> we can't just say
626 // m_clientList.DeleteContents(TRUE) - this would crash!
627 wxList::compatibility_iterator node = m_clientList.GetFirst();
628 while ( node )
629 {
630 delete (wxClientData *)node->GetData();
631 node = node->GetNext();
632 }
633 }
634 m_clientList.Clear();
635
636 if ( m_strings )
637 m_strings->Clear();
638 }
639
640 void wxListBox::Delete( int n )
641 {
642 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
643
644 GList *child = g_list_nth( m_list->children, n );
645
646 wxCHECK_RET( child, wxT("wrong listbox index") );
647
648 GList *list = g_list_append( (GList*) NULL, child->data );
649 gtk_list_remove_items( m_list, list );
650 g_list_free( list );
651
652 wxList::compatibility_iterator node = m_clientList.Item( n );
653 if ( node )
654 {
655 if ( m_clientDataItemsType == wxClientData_Object )
656 {
657 wxClientData *cd = (wxClientData*)node->GetData();
658 delete cd;
659 }
660
661 m_clientList.Erase( node );
662 }
663
664 if ( m_strings )
665 m_strings->RemoveAt(n);
666 }
667
668 // ----------------------------------------------------------------------------
669 // client data
670 // ----------------------------------------------------------------------------
671
672 void wxListBox::DoSetItemClientData( int n, void* clientData )
673 {
674 wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
675
676 wxList::compatibility_iterator node = m_clientList.Item( n );
677 wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
678
679 node->SetData( (wxObject*) clientData );
680 }
681
682 void* wxListBox::DoGetItemClientData( int n ) const
683 {
684 wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
685
686 wxList::compatibility_iterator node = m_clientList.Item( n );
687 wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
688
689 return node->GetData();
690 }
691
692 void wxListBox::DoSetItemClientObject( int n, wxClientData* clientData )
693 {
694 wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
695
696 wxList::compatibility_iterator node = m_clientList.Item( n );
697 wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientObject") );
698
699 // wxItemContainer already deletes data for us
700
701 node->SetData( (wxObject*) clientData );
702 }
703
704 wxClientData* wxListBox::DoGetItemClientObject( int n ) const
705 {
706 wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid listbox control") );
707
708 wxList::compatibility_iterator node = m_clientList.Item( n );
709 wxCHECK_MSG( node, (wxClientData *)NULL,
710 wxT("invalid index in wxListBox::DoGetItemClientObject") );
711
712 return (wxClientData*) node->GetData();
713 }
714
715 // ----------------------------------------------------------------------------
716 // string list access
717 // ----------------------------------------------------------------------------
718
719 wxString wxListBox::GetRealLabel(GList *item) const
720 {
721 GtkBin *bin = GTK_BIN( item->data );
722 GtkLabel *label = GTK_LABEL( bin->child );
723
724 wxString str;
725
726 #ifdef __WXGTK20__
727 str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
728 #else
729 str = wxString( label->label );
730 #endif
731
732 #if wxUSE_CHECKLISTBOX
733 // checklistboxes have "[±] " prepended to their lables, remove it
734 //
735 // NB: 4 below is the length of wxCHECKLBOX_STRING from wx/gtk/checklst.h
736 if ( m_hasCheckBoxes )
737 str.erase(0, 4);
738 #endif // wxUSE_CHECKLISTBOX
739
740 return str;
741 }
742
743 void wxListBox::SetString( int n, const wxString &string )
744 {
745 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
746
747 GList *child = g_list_nth( m_list->children, n );
748 if (child)
749 {
750 GtkBin *bin = GTK_BIN( child->data );
751 GtkLabel *label = GTK_LABEL( bin->child );
752
753 wxString str;
754 #if wxUSE_CHECKLISTBOX
755 if (m_hasCheckBoxes)
756 str += wxCHECKLBOX_STRING;
757 #endif // wxUSE_CHECKLISTBOX
758 str += string;
759
760 gtk_label_set( label, wxGTK_CONV( str ) );
761 }
762 else
763 {
764 wxFAIL_MSG(wxT("wrong listbox index"));
765 }
766 }
767
768 wxString wxListBox::GetString( int n ) const
769 {
770 wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
771
772 GList *child = g_list_nth( m_list->children, n );
773 if (child)
774 {
775 return GetRealLabel(child);
776 }
777
778 wxFAIL_MSG(wxT("wrong listbox index"));
779
780 return wxT("");
781 }
782
783 int wxListBox::GetCount() const
784 {
785 wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
786
787 GList *children = m_list->children;
788 return g_list_length(children);
789 }
790
791 int wxListBox::FindString( const wxString &item ) const
792 {
793 wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
794
795 GList *child = m_list->children;
796 int count = 0;
797 while (child)
798 {
799 if ( GetRealLabel(child) == item )
800 return count;
801
802 count++;
803 child = child->next;
804 }
805
806 // it's not an error if the string is not found -> no wxCHECK
807
808 return wxNOT_FOUND;
809 }
810
811 // ----------------------------------------------------------------------------
812 // selection
813 // ----------------------------------------------------------------------------
814
815 int wxListBox::GetSelection() const
816 {
817 wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
818
819 GList *child = m_list->children;
820 int count = 0;
821 while (child)
822 {
823 if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
824 count++;
825 child = child->next;
826 }
827 return -1;
828 }
829
830 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
831 {
832 wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
833
834 // get the number of selected items first
835 GList *child = m_list->children;
836 int count = 0;
837 for (child = m_list->children; child != NULL; child = child->next)
838 {
839 if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
840 count++;
841 }
842
843 aSelections.Empty();
844
845 if (count > 0)
846 {
847 // now fill the list
848 aSelections.Alloc(count); // optimization attempt
849 int i = 0;
850 for (child = m_list->children; child != NULL; child = child->next, i++)
851 {
852 if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
853 aSelections.Add(i);
854 }
855 }
856
857 return count;
858 }
859
860 bool wxListBox::IsSelected( int n ) const
861 {
862 wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
863
864 GList *target = g_list_nth( m_list->children, n );
865
866 wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
867
868 return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
869 }
870
871 void wxListBox::SetSelection( int n, bool select )
872 {
873 wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
874
875 m_blockEvent = TRUE;
876
877 if (select)
878 {
879 if ((m_windowStyle & wxLB_SINGLE) != 0)
880 gtk_list_unselect_item( m_list, m_prevSelection );
881 gtk_list_select_item( m_list, n );
882 m_prevSelection = n;
883 }
884 else
885 gtk_list_unselect_item( m_list, n );
886
887 m_blockEvent = FALSE;
888 }
889
890 void wxListBox::DoSetFirstItem( int n )
891 {
892 wxCHECK_RET( m_list, wxT("invalid listbox") );
893
894 if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
895 return;
896
897 // terribly efficient
898 const gchar *vadjustment_key = "gtk-vadjustment";
899 guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
900
901 GtkAdjustment *adjustment =
902 (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
903 wxCHECK_RET( adjustment, wxT("invalid listbox code") );
904
905 GList *target = g_list_nth( m_list->children, n );
906 wxCHECK_RET( target, wxT("invalid listbox index") );
907
908 GtkWidget *item = GTK_WIDGET(target->data);
909 wxCHECK_RET( item, wxT("invalid listbox code") );
910
911 if (item->allocation.y == -1)
912 {
913 wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
914 data->m_listbox = this;
915 data->m_item = n;
916 data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
917
918 return;
919 }
920
921 float y = item->allocation.y;
922 if (y > adjustment->upper - adjustment->page_size)
923 y = adjustment->upper - adjustment->page_size;
924 gtk_adjustment_set_value( adjustment, y );
925 }
926
927 // ----------------------------------------------------------------------------
928 // helpers
929 // ----------------------------------------------------------------------------
930
931 int wxListBox::GtkGetIndex( GtkWidget *item ) const
932 {
933 if (item)
934 {
935 GList *child = m_list->children;
936 int count = 0;
937 while (child)
938 {
939 if (GTK_WIDGET(child->data) == item) return count;
940 count++;
941 child = child->next;
942 }
943 }
944 return -1;
945 }
946
947 #if wxUSE_TOOLTIPS
948 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
949 {
950 GList *child = m_list->children;
951 while (child)
952 {
953 gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
954 child = child->next;
955 }
956 }
957 #endif // wxUSE_TOOLTIPS
958
959 GtkWidget *wxListBox::GetConnectWidget()
960 {
961 return GTK_WIDGET(m_list);
962 }
963
964 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
965 {
966 if (m_widget->window == window) return TRUE;
967
968 if (GTK_WIDGET(m_list)->window == window) return TRUE;
969
970 GList *child = m_list->children;
971 while (child)
972 {
973 GtkWidget *bin = GTK_WIDGET( child->data );
974 if (bin->window == window) return TRUE;
975 child = child->next;
976 }
977
978 return FALSE;
979 }
980
981 void wxListBox::ApplyWidgetStyle()
982 {
983 SetWidgetStyle();
984
985 if (m_backgroundColour.Ok())
986 {
987 GdkWindow *window = GTK_WIDGET(m_list)->window;
988 if ( window )
989 {
990 m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
991 gdk_window_set_background( window, m_backgroundColour.GetColor() );
992 gdk_window_clear( window );
993 }
994 }
995
996 GList *child = m_list->children;
997 while (child)
998 {
999 gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
1000
1001 GtkBin *bin = GTK_BIN( child->data );
1002 GtkWidget *label = GTK_WIDGET( bin->child );
1003 gtk_widget_set_style( label, m_widgetStyle );
1004
1005 child = child->next;
1006 }
1007 }
1008
1009 void wxListBox::OnInternalIdle()
1010 {
1011 wxCursor cursor = m_cursor;
1012 if (g_globalCursor.Ok()) cursor = g_globalCursor;
1013
1014 if (GTK_WIDGET(m_list)->window && cursor.Ok())
1015 {
1016 /* I now set the cursor the anew in every OnInternalIdle call
1017 as setting the cursor in a parent window also effects the
1018 windows above so that checking for the current cursor is
1019 not possible. */
1020
1021 gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
1022
1023 GList *child = m_list->children;
1024 while (child)
1025 {
1026 GtkBin *bin = GTK_BIN( child->data );
1027 GtkWidget *label = GTK_WIDGET( bin->child );
1028
1029 if (!label->window)
1030 break;
1031 else
1032 gdk_window_set_cursor( label->window, cursor.GetCursor() );
1033
1034 child = child->next;
1035 }
1036 }
1037
1038 if (g_delayedFocus == this)
1039 {
1040 if (GTK_WIDGET_REALIZED(m_widget))
1041 {
1042 gtk_widget_grab_focus( m_widget );
1043 g_delayedFocus = NULL;
1044 }
1045 }
1046
1047 if (wxUpdateUIEvent::CanUpdate(this))
1048 UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1049 }
1050
1051 wxSize wxListBox::DoGetBestSize() const
1052 {
1053 int lbWidth = 100; // some defaults
1054 int lbHeight = 110;
1055 int wLine;
1056
1057 // Find the widest line
1058 for(int i = 0; i < GetCount(); i++) {
1059 wxString str(GetString(i));
1060 GetTextExtent(str, &wLine, NULL);
1061 lbWidth = wxMax(lbWidth, wLine);
1062 }
1063
1064 // Add room for the scrollbar
1065 lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
1066
1067 // And just a bit more
1068 int cx, cy;
1069 GetTextExtent( wxT("X"), &cx, &cy);
1070 lbWidth += 3 * cx;
1071
1072 // don't make the listbox too tall (limit height to around 10 items) but don't
1073 // make it too small neither
1074 lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
1075
1076 return wxSize(lbWidth, lbHeight);
1077 }
1078
1079 void wxListBox::FixUpMouseEvent(GtkWidget *widget, wxCoord& x, wxCoord& y)
1080 {
1081 // the mouse event coords are relative to the listbox items, we need to
1082 // translate them to the normal client coords
1083 x += widget->allocation.x;
1084 y += widget->allocation.y;
1085 }
1086
1087 #endif // wxUSE_LISTBOX
1088
wxWidgets (Impactor)