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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: combobox.cpp | |
3 | // Purpose: wxComboBox class | |
4 | // Author: Stefan Csomor | |
5 | // Modified by: | |
6 | // Created: 1998-01-01 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Stefan Csomor | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
13 | #pragma implementation "combobox.h" | |
14 | #endif | |
15 | ||
16 | #include "wx/wxprec.h" | |
17 | ||
18 | #if wxUSE_COMBOBOX | |
19 | ||
20 | #include "wx/combobox.h" | |
21 | #include "wx/button.h" | |
22 | #include "wx/menu.h" | |
23 | #include "wx/mac/uma.h" | |
24 | ||
25 | #if !USE_SHARED_LIBRARY | |
26 | IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl) | |
27 | #endif | |
28 | ||
29 | // composite combobox implementation by Dan "Bud" Keith bud@otsys.com | |
30 | ||
31 | ||
32 | static int nextPopUpMenuId = 1000 ; | |
33 | MenuHandle NewUniqueMenu() | |
34 | { | |
35 | MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ; | |
36 | nextPopUpMenuId++ ; | |
37 | return handle ; | |
38 | } | |
39 | ||
40 | ||
41 | // ---------------------------------------------------------------------------- | |
42 | // constants | |
43 | // ---------------------------------------------------------------------------- | |
44 | ||
45 | // the margin between the text control and the choice | |
46 | #if TARGET_API_MAC_OSX | |
47 | // margin should be bigger on OS X due to blue highlight | |
48 | // around text control. | |
49 | static const wxCoord MARGIN = 4; | |
50 | // this is the border a focus rect on OSX is needing | |
51 | static const int TEXTFOCUSBORDER = 3 ; | |
52 | #else | |
53 | static const wxCoord MARGIN = 2; | |
54 | static const int TEXTFOCUSBORDER = 0 ; | |
55 | #endif | |
56 | static const int POPUPHEIGHT = 23; | |
57 | ||
58 | ||
59 | // ---------------------------------------------------------------------------- | |
60 | // wxComboBoxText: text control forwards events to combobox | |
61 | // ---------------------------------------------------------------------------- | |
62 | ||
63 | class wxComboBoxText : public wxTextCtrl | |
64 | { | |
65 | public: | |
66 | wxComboBoxText( wxComboBox * cb ) | |
67 | : wxTextCtrl( cb , 1 ) | |
68 | { | |
69 | m_cb = cb; | |
70 | } | |
71 | ||
72 | protected: | |
73 | void OnChar( wxKeyEvent& event ) | |
74 | { | |
75 | // Allows processing the tab key to go to the next control | |
76 | if (event.GetKeyCode() == WXK_TAB) | |
77 | { | |
78 | wxNavigationKeyEvent NavEvent; | |
79 | NavEvent.SetEventObject(this); | |
80 | NavEvent.SetDirection(true); | |
81 | NavEvent.SetWindowChange(false); | |
82 | ||
83 | // Get the parent of the combo and have it process the navigation? | |
84 | if (m_cb->GetParent()->GetEventHandler()->ProcessEvent(NavEvent)) | |
85 | return; | |
86 | } | |
87 | if ( event.GetKeyCode() == WXK_RETURN ) | |
88 | { | |
89 | wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_cb->GetId()); | |
90 | event.SetString( GetValue() ); | |
91 | event.SetInt( m_cb->GetSelection() ); | |
92 | event.SetEventObject( m_cb ); | |
93 | ||
94 | // This will invoke the dialog default action, such | |
95 | // as the clicking the default button. | |
96 | ||
97 | if (!m_cb->GetEventHandler()->ProcessEvent( event )) | |
98 | { | |
99 | wxWindow *parent = GetParent(); | |
100 | while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) { | |
101 | parent = parent->GetParent() ; | |
102 | } | |
103 | if ( parent && parent->GetDefaultItem() ) | |
104 | { | |
105 | wxButton *def = wxDynamicCast(parent->GetDefaultItem(), | |
106 | wxButton); | |
107 | if ( def && def->IsEnabled() ) | |
108 | { | |
109 | wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() ); | |
110 | event.SetEventObject(def); | |
111 | def->Command(event); | |
112 | } | |
113 | } | |
114 | ||
115 | return; | |
116 | } | |
117 | } | |
118 | ||
119 | event.Skip(); | |
120 | } | |
121 | ||
122 | // Use the KeyUp as a naive approximation for TEXT_UPDATED, even though it is somewhat delayed | |
123 | // but this is less complicated than dealing with idle-ness, and is much better than nothing | |
124 | void OnKeyUp( wxKeyEvent& event ) | |
125 | { | |
126 | if ( event.GetKeyCode() != WXK_RETURN && event.GetKeyCode() != WXK_TAB ) | |
127 | { | |
128 | wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId()); | |
129 | event.SetString( GetValue() ); | |
130 | event.SetEventObject( m_cb ); | |
131 | m_cb->GetEventHandler()->ProcessEvent(event); | |
132 | } | |
133 | } | |
134 | private: | |
135 | wxComboBox *m_cb; | |
136 | ||
137 | DECLARE_EVENT_TABLE() | |
138 | }; | |
139 | ||
140 | BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl) | |
141 | EVT_CHAR( wxComboBoxText::OnChar) | |
142 | EVT_KEY_UP( wxComboBoxText::OnKeyUp) | |
143 | END_EVENT_TABLE() | |
144 | ||
145 | class wxComboBoxChoice : public wxChoice | |
146 | { | |
147 | public: | |
148 | wxComboBoxChoice(wxComboBox *cb, int style) | |
149 | : wxChoice( cb , 1 ) | |
150 | { | |
151 | m_cb = cb; | |
152 | } | |
153 | int GetPopupWidth() const | |
154 | { | |
155 | switch ( GetWindowVariant() ) | |
156 | { | |
157 | case wxWINDOW_VARIANT_NORMAL : | |
158 | case wxWINDOW_VARIANT_LARGE : | |
159 | return 24 ; | |
160 | default : | |
161 | return 21 ; | |
162 | } | |
163 | } | |
164 | ||
165 | protected: | |
166 | void OnChoice( wxCommandEvent& e ) | |
167 | { | |
168 | wxString s = e.GetString(); | |
169 | ||
170 | m_cb->DelegateChoice( s ); | |
171 | wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
172 | event2.SetInt(m_cb->GetSelection()); | |
173 | event2.SetEventObject(m_cb); | |
174 | event2.SetString(m_cb->GetStringSelection()); | |
175 | m_cb->ProcessCommand(event2); | |
176 | ||
177 | // For consistency with MSW and GTK, also send a text updated event | |
178 | // After all, the text is updated when a selection is made | |
179 | wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId() ); | |
180 | TextEvent.SetString( m_cb->GetStringSelection() ); | |
181 | TextEvent.SetEventObject( m_cb ); | |
182 | m_cb->ProcessCommand( TextEvent ); | |
183 | } | |
184 | virtual wxSize DoGetBestSize() const | |
185 | { | |
186 | wxSize sz = wxChoice::DoGetBestSize() ; | |
187 | if (! m_cb->HasFlag(wxCB_READONLY) ) | |
188 | sz.x = GetPopupWidth() ; | |
189 | return sz ; | |
190 | } | |
191 | ||
192 | private: | |
193 | wxComboBox *m_cb; | |
194 | ||
195 | DECLARE_EVENT_TABLE() | |
196 | }; | |
197 | ||
198 | BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice) | |
199 | EVT_CHOICE(-1, wxComboBoxChoice::OnChoice) | |
200 | END_EVENT_TABLE() | |
201 | ||
202 | wxComboBox::~wxComboBox() | |
203 | { | |
204 | // delete client objects | |
205 | FreeData(); | |
206 | ||
207 | // delete the controls now, don't leave them alive even though they would | |
208 | // still be eventually deleted by our parent - but it will be too late, the | |
209 | // user code expects them to be gone now | |
210 | if (m_text != NULL) { | |
211 | delete m_text; | |
212 | m_text = NULL; | |
213 | } | |
214 | if (m_choice != NULL) { | |
215 | delete m_choice; | |
216 | m_choice = NULL; | |
217 | } | |
218 | } | |
219 | ||
220 | ||
221 | // ---------------------------------------------------------------------------- | |
222 | // geometry | |
223 | // ---------------------------------------------------------------------------- | |
224 | ||
225 | wxSize wxComboBox::DoGetBestSize() const | |
226 | { | |
227 | if (!m_choice && !m_text) | |
228 | return GetSize(); | |
229 | wxSize size = m_choice->GetBestSize(); | |
230 | ||
231 | if ( m_text != NULL ) | |
232 | { | |
233 | wxSize sizeText = m_text->GetBestSize(); | |
234 | if (sizeText.y > size.y) | |
235 | size.y = sizeText.y; | |
236 | size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN; | |
237 | size.x += TEXTFOCUSBORDER ; | |
238 | size.y += 2 * TEXTFOCUSBORDER ; | |
239 | } | |
240 | else | |
241 | { | |
242 | // clipping is too tight | |
243 | size.y += 1 ; | |
244 | } | |
245 | return size; | |
246 | } | |
247 | ||
248 | void wxComboBox::DoMoveWindow(int x, int y, int width, int height) | |
249 | { | |
250 | wxControl::DoMoveWindow(x, y, width , height ); | |
251 | ||
252 | if ( m_text == NULL ) | |
253 | { | |
254 | // we might not be fully constructed yet, therefore watch out... | |
255 | if ( m_choice ) | |
256 | m_choice->SetSize(0, 0 , width, -1); | |
257 | } | |
258 | else | |
259 | { | |
260 | wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN; | |
261 | m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1 ); | |
262 | // put it at an inset of 1 to have outer area shadows drawn as well | |
263 | m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -1); | |
264 | } | |
265 | } | |
266 | ||
267 | ||
268 | ||
269 | // ---------------------------------------------------------------------------- | |
270 | // operations forwarded to the subcontrols | |
271 | // ---------------------------------------------------------------------------- | |
272 | ||
273 | bool wxComboBox::Enable(bool enable) | |
274 | { | |
275 | if ( !wxControl::Enable(enable) ) | |
276 | return false; | |
277 | ||
278 | return true; | |
279 | } | |
280 | ||
281 | bool wxComboBox::Show(bool show) | |
282 | { | |
283 | if ( !wxControl::Show(show) ) | |
284 | return false; | |
285 | ||
286 | return true; | |
287 | } | |
288 | ||
289 | void wxComboBox::SetFocus() | |
290 | { | |
291 | if ( m_text != NULL) { | |
292 | m_text->SetFocus(); | |
293 | } | |
294 | } | |
295 | ||
296 | ||
297 | void wxComboBox::DelegateTextChanged( const wxString& value ) | |
298 | { | |
299 | SetStringSelection( value ); | |
300 | } | |
301 | ||
302 | ||
303 | void wxComboBox::DelegateChoice( const wxString& value ) | |
304 | { | |
305 | SetStringSelection( value ); | |
306 | } | |
307 | ||
308 | ||
309 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
310 | const wxString& value, | |
311 | const wxPoint& pos, | |
312 | const wxSize& size, | |
313 | const wxArrayString& choices, | |
314 | long style, | |
315 | const wxValidator& validator, | |
316 | const wxString& name) | |
317 | { | |
318 | wxCArrayString chs( choices ); | |
319 | ||
320 | return Create( parent, id, value, pos, size, chs.GetCount(), | |
321 | chs.GetStrings(), style, validator, name ); | |
322 | } | |
323 | ||
324 | ||
325 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
326 | const wxString& value, | |
327 | const wxPoint& pos, | |
328 | const wxSize& size, | |
329 | int n, const wxString choices[], | |
330 | long style, | |
331 | const wxValidator& validator, | |
332 | const wxString& name) | |
333 | { | |
334 | if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style , | |
335 | wxDefaultValidator, name) ) | |
336 | { | |
337 | return false; | |
338 | } | |
339 | ||
340 | m_choice = new wxComboBoxChoice(this, style ); | |
341 | wxSize csize = size; | |
342 | if ( style & wxCB_READONLY ) | |
343 | { | |
344 | m_text = NULL; | |
345 | } | |
346 | else | |
347 | { | |
348 | m_text = new wxComboBoxText(this); | |
349 | if ( size.y == -1 ) | |
350 | { | |
351 | csize.y = m_text->GetSize().y ; | |
352 | csize.y += 2 * TEXTFOCUSBORDER ; | |
353 | } | |
354 | } | |
355 | ||
356 | DoSetSize(pos.x, pos.y, csize.x, csize.y); | |
357 | ||
358 | for ( int i = 0 ; i < n ; i++ ) | |
359 | { | |
360 | m_choice->DoAppend( choices[ i ] ); | |
361 | } | |
362 | ||
363 | SetBestSize(size); // Needed because it is a wxControlWithItems | |
364 | SetStringSelection(value); | |
365 | ||
366 | return true; | |
367 | } | |
368 | ||
369 | wxString wxComboBox::GetValue() const | |
370 | { | |
371 | wxString result; | |
372 | ||
373 | if ( m_text == NULL ) | |
374 | { | |
375 | result = m_choice->GetString( m_choice->GetSelection() ); | |
376 | } | |
377 | else | |
378 | { | |
379 | result = m_text->GetValue(); | |
380 | } | |
381 | ||
382 | return result; | |
383 | } | |
384 | ||
385 | int wxComboBox::GetCount() const | |
386 | { | |
387 | return m_choice->GetCount() ; | |
388 | } | |
389 | ||
390 | void wxComboBox::SetValue(const wxString& value) | |
391 | { | |
392 | if ( HasFlag(wxCB_READONLY) ) | |
393 | SetStringSelection( value ) ; | |
394 | else | |
395 | m_text->SetValue( value ); | |
396 | } | |
397 | ||
398 | // Clipboard operations | |
399 | void wxComboBox::Copy() | |
400 | { | |
401 | if ( m_text != NULL ) | |
402 | { | |
403 | m_text->Copy(); | |
404 | } | |
405 | } | |
406 | ||
407 | void wxComboBox::Cut() | |
408 | { | |
409 | if ( m_text != NULL ) | |
410 | { | |
411 | m_text->Cut(); | |
412 | } | |
413 | } | |
414 | ||
415 | void wxComboBox::Paste() | |
416 | { | |
417 | if ( m_text != NULL ) | |
418 | { | |
419 | m_text->Paste(); | |
420 | } | |
421 | } | |
422 | ||
423 | void wxComboBox::SetEditable(bool editable) | |
424 | { | |
425 | if ( ( m_text == NULL ) && editable ) | |
426 | { | |
427 | m_text = new wxComboBoxText( this ); | |
428 | } | |
429 | else if ( ( m_text != NULL ) && !editable ) | |
430 | { | |
431 | delete m_text; | |
432 | m_text = NULL; | |
433 | } | |
434 | ||
435 | int currentX, currentY; | |
436 | GetPosition( ¤tX, ¤tY ); | |
437 | ||
438 | int currentW, currentH; | |
439 | GetSize( ¤tW, ¤tH ); | |
440 | ||
441 | DoMoveWindow( currentX, currentY, currentW, currentH ); | |
442 | } | |
443 | ||
444 | void wxComboBox::SetInsertionPoint(long pos) | |
445 | { | |
446 | // TODO | |
447 | } | |
448 | ||
449 | void wxComboBox::SetInsertionPointEnd() | |
450 | { | |
451 | // TODO | |
452 | } | |
453 | ||
454 | long wxComboBox::GetInsertionPoint() const | |
455 | { | |
456 | // TODO | |
457 | return 0; | |
458 | } | |
459 | ||
460 | wxTextPos wxComboBox::GetLastPosition() const | |
461 | { | |
462 | // TODO | |
463 | return 0; | |
464 | } | |
465 | ||
466 | void wxComboBox::Replace(long from, long to, const wxString& value) | |
467 | { | |
468 | // TODO | |
469 | } | |
470 | ||
471 | void wxComboBox::Remove(long from, long to) | |
472 | { | |
473 | // TODO | |
474 | } | |
475 | ||
476 | void wxComboBox::SetSelection(long from, long to) | |
477 | { | |
478 | // TODO | |
479 | } | |
480 | ||
481 | int wxComboBox::DoAppend(const wxString& item) | |
482 | { | |
483 | return m_choice->DoAppend( item ) ; | |
484 | } | |
485 | ||
486 | int wxComboBox::DoInsert(const wxString& item, int pos) | |
487 | { | |
488 | return m_choice->DoInsert( item , pos ) ; | |
489 | } | |
490 | ||
491 | void wxComboBox::DoSetItemClientData(int n, void* clientData) | |
492 | { | |
493 | return m_choice->DoSetItemClientData( n , clientData ) ; | |
494 | } | |
495 | ||
496 | void* wxComboBox::DoGetItemClientData(int n) const | |
497 | { | |
498 | return m_choice->DoGetItemClientData( n ) ; | |
499 | } | |
500 | ||
501 | void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData) | |
502 | { | |
503 | return m_choice->DoSetItemClientObject( n , clientData ) ; | |
504 | } | |
505 | ||
506 | wxClientData* wxComboBox::DoGetItemClientObject(int n) const | |
507 | { | |
508 | return m_choice->DoGetItemClientObject( n ) ; | |
509 | } | |
510 | ||
511 | void wxComboBox::FreeData() | |
512 | { | |
513 | if ( HasClientObjectData() ) | |
514 | { | |
515 | size_t count = GetCount(); | |
516 | for ( size_t n = 0; n < count; n++ ) | |
517 | { | |
518 | SetClientObject( n, NULL ); | |
519 | } | |
520 | } | |
521 | } | |
522 | ||
523 | void wxComboBox::Delete(int n) | |
524 | { | |
525 | // force client object deletion | |
526 | if( HasClientObjectData() ) | |
527 | SetClientObject( n, NULL ); | |
528 | m_choice->Delete( n ); | |
529 | } | |
530 | ||
531 | void wxComboBox::Clear() | |
532 | { | |
533 | FreeData(); | |
534 | m_choice->Clear(); | |
535 | } | |
536 | ||
537 | int wxComboBox::GetSelection() const | |
538 | { | |
539 | return m_choice->GetSelection(); | |
540 | } | |
541 | ||
542 | void wxComboBox::SetSelection(int n) | |
543 | { | |
544 | m_choice->SetSelection( n ); | |
545 | ||
546 | if ( m_text != NULL ) | |
547 | { | |
548 | m_text->SetValue( GetString( n ) ); | |
549 | } | |
550 | } | |
551 | ||
552 | int wxComboBox::FindString(const wxString& s) const | |
553 | { | |
554 | return m_choice->FindString( s ); | |
555 | } | |
556 | ||
557 | wxString wxComboBox::GetString(int n) const | |
558 | { | |
559 | return m_choice->GetString( n ); | |
560 | } | |
561 | ||
562 | wxString wxComboBox::GetStringSelection() const | |
563 | { | |
564 | int sel = GetSelection (); | |
565 | if (sel > -1) | |
566 | return wxString(this->GetString (sel)); | |
567 | else | |
568 | return wxEmptyString; | |
569 | } | |
570 | ||
571 | void wxComboBox::SetString(int n, const wxString& s) | |
572 | { | |
573 | m_choice->SetString( n , s ) ; | |
574 | } | |
575 | ||
576 | bool wxComboBox::IsEditable() const | |
577 | { | |
578 | return m_text != NULL && !HasFlag(wxCB_READONLY); | |
579 | } | |
580 | ||
581 | void wxComboBox::Undo() | |
582 | { | |
583 | if (m_text != NULL) | |
584 | m_text->Undo(); | |
585 | } | |
586 | ||
587 | void wxComboBox::Redo() | |
588 | { | |
589 | if (m_text != NULL) | |
590 | m_text->Redo(); | |
591 | } | |
592 | ||
593 | void wxComboBox::SelectAll() | |
594 | { | |
595 | if (m_text != NULL) | |
596 | m_text->SelectAll(); | |
597 | } | |
598 | ||
599 | bool wxComboBox::CanCopy() const | |
600 | { | |
601 | if (m_text != NULL) | |
602 | return m_text->CanCopy(); | |
603 | else | |
604 | return false; | |
605 | } | |
606 | ||
607 | bool wxComboBox::CanCut() const | |
608 | { | |
609 | if (m_text != NULL) | |
610 | return m_text->CanCut(); | |
611 | else | |
612 | return false; | |
613 | } | |
614 | ||
615 | bool wxComboBox::CanPaste() const | |
616 | { | |
617 | if (m_text != NULL) | |
618 | return m_text->CanPaste(); | |
619 | else | |
620 | return false; | |
621 | } | |
622 | ||
623 | bool wxComboBox::CanUndo() const | |
624 | { | |
625 | if (m_text != NULL) | |
626 | return m_text->CanUndo(); | |
627 | else | |
628 | return false; | |
629 | } | |
630 | ||
631 | bool wxComboBox::CanRedo() const | |
632 | { | |
633 | if (m_text != NULL) | |
634 | return m_text->CanRedo(); | |
635 | else | |
636 | return false; | |
637 | } | |
638 | ||
639 | wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) ) | |
640 | { | |
641 | /* For consistency with other platforms, clicking in the text area does not constitute a selection | |
642 | wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId ); | |
643 | event.SetInt(GetSelection()); | |
644 | event.SetEventObject(this); | |
645 | event.SetString(GetStringSelection()); | |
646 | ProcessCommand(event);*/ | |
647 | return noErr ; | |
648 | } | |
649 | ||
650 | #endif |