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