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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 = 6; | |
46 | static const int POPUPWIDTH = 24; | |
47 | #else | |
48 | static const wxCoord MARGIN = 2; | |
49 | static const int POPUPWIDTH = 18; | |
50 | #endif | |
51 | static const int POPUPHEIGHT = 23; | |
52 | ||
53 | ||
54 | // ---------------------------------------------------------------------------- | |
55 | // wxComboBoxText: text control forwards events to combobox | |
56 | // ---------------------------------------------------------------------------- | |
57 | ||
58 | class wxComboBoxText : public wxTextCtrl | |
59 | { | |
60 | public: | |
61 | wxComboBoxText( wxComboBox * cb ) | |
62 | : wxTextCtrl( cb , 1 ) | |
63 | { | |
64 | m_cb = cb; | |
65 | ||
66 | // remove the default minsize, the combobox will have one instead | |
67 | SetSizeHints(-1,-1); | |
68 | } | |
69 | ||
70 | protected: | |
71 | void OnChar( wxKeyEvent& event ) | |
72 | { | |
73 | if ( event.GetKeyCode() == WXK_RETURN ) | |
74 | { | |
75 | wxString value = GetValue(); | |
76 | ||
77 | if ( m_cb->GetCount() == 0 ) | |
78 | { | |
79 | // make Enter generate "selected" event if there is only one item | |
80 | // in the combobox - without it, it's impossible to select it at | |
81 | // all! | |
82 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
83 | event.SetInt( 0 ); | |
84 | event.SetString( value ); | |
85 | event.SetEventObject( m_cb ); | |
86 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
87 | } | |
88 | else | |
89 | { | |
90 | // add the item to the list if it's not there yet | |
91 | if ( m_cb->FindString(value) == wxNOT_FOUND ) | |
92 | { | |
93 | m_cb->Append(value); | |
94 | m_cb->SetStringSelection(value); | |
95 | ||
96 | // and generate the selected event for it | |
97 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
98 | event.SetInt( m_cb->GetCount() - 1 ); | |
99 | event.SetString( value ); | |
100 | event.SetEventObject( m_cb ); | |
101 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
102 | } | |
103 | ||
104 | // This will invoke the dialog default action, such | |
105 | // as the clicking the default button. | |
106 | ||
107 | wxWindow *parent = GetParent(); | |
108 | while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) { | |
109 | parent = parent->GetParent() ; | |
110 | } | |
111 | if ( parent && parent->GetDefaultItem() ) | |
112 | { | |
113 | wxButton *def = wxDynamicCast(parent->GetDefaultItem(), | |
114 | wxButton); | |
115 | if ( def && def->IsEnabled() ) | |
116 | { | |
117 | wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() ); | |
118 | event.SetEventObject(def); | |
119 | def->Command(event); | |
120 | return ; | |
121 | } | |
122 | } | |
123 | ||
124 | return; | |
125 | } | |
126 | } | |
127 | ||
128 | event.Skip(); | |
129 | } | |
130 | ||
131 | private: | |
132 | wxComboBox *m_cb; | |
133 | ||
134 | DECLARE_EVENT_TABLE() | |
135 | }; | |
136 | ||
137 | BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl) | |
138 | EVT_CHAR( wxComboBoxText::OnChar) | |
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 | // remove the default minsize, the combobox will have one instead | |
150 | SetSizeHints(-1,-1); | |
151 | } | |
152 | ||
153 | protected: | |
154 | void OnChoice( wxCommandEvent& e ) | |
155 | { | |
156 | wxString s = e.GetString(); | |
157 | ||
158 | m_cb->DelegateChoice( s ); | |
159 | wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
160 | event2.SetInt(m_cb->GetSelection()); | |
161 | event2.SetEventObject(m_cb); | |
162 | event2.SetString(m_cb->GetStringSelection()); | |
163 | m_cb->ProcessCommand(event2); | |
164 | } | |
165 | virtual wxSize DoGetBestSize() const | |
166 | { | |
167 | wxSize sz = wxChoice::DoGetBestSize() ; | |
168 | if (! m_cb->HasFlag(wxCB_READONLY) ) | |
169 | sz.x = POPUPWIDTH; | |
170 | return sz ; | |
171 | } | |
172 | ||
173 | private: | |
174 | wxComboBox *m_cb; | |
175 | ||
176 | DECLARE_EVENT_TABLE() | |
177 | }; | |
178 | ||
179 | BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice) | |
180 | EVT_CHOICE(-1, wxComboBoxChoice::OnChoice) | |
181 | END_EVENT_TABLE() | |
182 | ||
183 | wxComboBox::~wxComboBox() | |
184 | { | |
185 | // delete client objects | |
186 | FreeData(); | |
187 | ||
188 | // delete the controls now, don't leave them alive even though they would | |
189 | // still be eventually deleted by our parent - but it will be too late, the | |
190 | // user code expects them to be gone now | |
191 | if (m_text != NULL) { | |
192 | delete m_text; | |
193 | m_text = NULL; | |
194 | } | |
195 | if (m_choice != NULL) { | |
196 | delete m_choice; | |
197 | m_choice = NULL; | |
198 | } | |
199 | } | |
200 | ||
201 | ||
202 | // ---------------------------------------------------------------------------- | |
203 | // geometry | |
204 | // ---------------------------------------------------------------------------- | |
205 | ||
206 | wxSize wxComboBox::DoGetBestSize() const | |
207 | { | |
208 | if (!m_choice || !m_text) | |
209 | return GetSize(); | |
210 | wxSize size = m_choice->GetBestSize(); | |
211 | ||
212 | if ( m_text != NULL ) | |
213 | { | |
214 | wxSize sizeText = m_text->GetBestSize(); | |
215 | if (sizeText.y > size.y) | |
216 | size.y = sizeText.y; | |
217 | size.x = POPUPWIDTH + sizeText.x + MARGIN; | |
218 | } | |
219 | ||
220 | return size; | |
221 | } | |
222 | ||
223 | void wxComboBox::DoMoveWindow(int x, int y, int width, int height) { | |
224 | height = POPUPHEIGHT; | |
225 | int origin = 0; | |
226 | #if TARGET_API_MAC_OSX | |
227 | // give the controls some padding so that the text ctrl's borders | |
228 | // and blue highlight can appear | |
229 | origin = 4; | |
230 | #endif | |
231 | ||
232 | wxControl::DoMoveWindow(x, y, width + origin, height + origin); | |
233 | ||
234 | if ( m_text == NULL ) | |
235 | { | |
236 | // we might not be fully constructed yet, therefore watch out... | |
237 | if ( m_choice ) | |
238 | m_choice->SetSize(0, 0 , width, -1); | |
239 | } | |
240 | else | |
241 | { | |
242 | wxCoord wText = width - POPUPWIDTH - MARGIN; | |
243 | #if TARGET_API_MAC_OSX | |
244 | // also, we need to shrink the size of the wxTextCtrl a bit | |
245 | // to make it appear properly on OS X. | |
246 | height -= 8; | |
247 | wText -= 8; | |
248 | #endif | |
249 | m_text->SetSize(origin, origin, wText, height); | |
250 | m_choice->SetSize(origin + wText + MARGIN, 0, POPUPWIDTH, -1); | |
251 | } | |
252 | } | |
253 | ||
254 | ||
255 | ||
256 | // ---------------------------------------------------------------------------- | |
257 | // operations forwarded to the subcontrols | |
258 | // ---------------------------------------------------------------------------- | |
259 | ||
260 | bool wxComboBox::Enable(bool enable) | |
261 | { | |
262 | if ( !wxControl::Enable(enable) ) | |
263 | return FALSE; | |
264 | ||
265 | return TRUE; | |
266 | } | |
267 | ||
268 | bool wxComboBox::Show(bool show) | |
269 | { | |
270 | if ( !wxControl::Show(show) ) | |
271 | return FALSE; | |
272 | ||
273 | return TRUE; | |
274 | } | |
275 | ||
276 | void wxComboBox::SetFocus() | |
277 | { | |
278 | if ( m_text != NULL) { | |
279 | m_text->SetFocus(); | |
280 | } | |
281 | } | |
282 | ||
283 | ||
284 | void wxComboBox::DelegateTextChanged( const wxString& value ) | |
285 | { | |
286 | SetStringSelection( value ); | |
287 | } | |
288 | ||
289 | ||
290 | void wxComboBox::DelegateChoice( const wxString& value ) | |
291 | { | |
292 | SetStringSelection( value ); | |
293 | } | |
294 | ||
295 | ||
296 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
297 | const wxString& value, | |
298 | const wxPoint& pos, | |
299 | const wxSize& size, | |
300 | const wxArrayString& choices, | |
301 | long style, | |
302 | const wxValidator& validator, | |
303 | const wxString& name) | |
304 | { | |
305 | wxCArrayString chs( choices ); | |
306 | ||
307 | return Create( parent, id, value, pos, size, chs.GetCount(), | |
308 | chs.GetStrings(), style, validator, name ); | |
309 | } | |
310 | ||
311 | ||
312 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
313 | const wxString& value, | |
314 | const wxPoint& pos, | |
315 | const wxSize& size, | |
316 | int n, const wxString choices[], | |
317 | long style, | |
318 | const wxValidator& validator, | |
319 | const wxString& name) | |
320 | { | |
321 | if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style , | |
322 | wxDefaultValidator, name) ) | |
323 | { | |
324 | return FALSE; | |
325 | } | |
326 | ||
327 | m_choice = new wxComboBoxChoice(this, style ); | |
328 | m_choice->SetSizeHints( wxSize( POPUPWIDTH , POPUPHEIGHT ) ) ; | |
329 | wxSize csize = size; | |
330 | if ( style & wxCB_READONLY ) | |
331 | { | |
332 | m_text = NULL; | |
333 | } | |
334 | else | |
335 | { | |
336 | m_text = new wxComboBoxText(this); | |
337 | if ( size.y == -1 ) { | |
338 | csize.y = m_text->GetSize().y ; | |
339 | } | |
340 | } | |
341 | ||
342 | DoSetSize(pos.x, pos.y, csize.x, csize.y); | |
343 | ||
344 | for ( int i = 0 ; i < n ; i++ ) | |
345 | { | |
346 | m_choice->DoAppend( choices[ i ] ); | |
347 | } | |
348 | ||
349 | SetBestSize(csize); // Needed because it is a wxControlWithItems | |
350 | ||
351 | return TRUE; | |
352 | } | |
353 | ||
354 | wxString wxComboBox::GetValue() const | |
355 | { | |
356 | wxString result; | |
357 | ||
358 | if ( m_text == NULL ) | |
359 | { | |
360 | result = m_choice->GetString( m_choice->GetSelection() ); | |
361 | } | |
362 | else | |
363 | { | |
364 | result = m_text->GetValue(); | |
365 | } | |
366 | ||
367 | return result; | |
368 | } | |
369 | ||
370 | int wxComboBox::GetCount() const | |
371 | { | |
372 | return m_choice->GetCount() ; | |
373 | } | |
374 | ||
375 | void wxComboBox::SetValue(const wxString& value) | |
376 | { | |
377 | int s = FindString (value); | |
378 | if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) ) | |
379 | { | |
380 | m_choice->Append(value) ; | |
381 | } | |
382 | SetStringSelection( value ) ; | |
383 | } | |
384 | ||
385 | // Clipboard operations | |
386 | void wxComboBox::Copy() | |
387 | { | |
388 | if ( m_text != NULL ) | |
389 | { | |
390 | m_text->Copy(); | |
391 | } | |
392 | } | |
393 | ||
394 | void wxComboBox::Cut() | |
395 | { | |
396 | if ( m_text != NULL ) | |
397 | { | |
398 | m_text->Cut(); | |
399 | } | |
400 | } | |
401 | ||
402 | void wxComboBox::Paste() | |
403 | { | |
404 | if ( m_text != NULL ) | |
405 | { | |
406 | m_text->Paste(); | |
407 | } | |
408 | } | |
409 | ||
410 | void wxComboBox::SetEditable(bool editable) | |
411 | { | |
412 | if ( ( m_text == NULL ) && editable ) | |
413 | { | |
414 | m_text = new wxComboBoxText( this ); | |
415 | } | |
416 | else if ( ( m_text != NULL ) && !editable ) | |
417 | { | |
418 | delete m_text; | |
419 | m_text = NULL; | |
420 | } | |
421 | ||
422 | int currentX, currentY; | |
423 | GetPosition( ¤tX, ¤tY ); | |
424 | ||
425 | int currentW, currentH; | |
426 | GetSize( ¤tW, ¤tH ); | |
427 | ||
428 | DoMoveWindow( currentX, currentY, currentW, currentH ); | |
429 | } | |
430 | ||
431 | void wxComboBox::SetInsertionPoint(long pos) | |
432 | { | |
433 | // TODO | |
434 | } | |
435 | ||
436 | void wxComboBox::SetInsertionPointEnd() | |
437 | { | |
438 | // TODO | |
439 | } | |
440 | ||
441 | long wxComboBox::GetInsertionPoint() const | |
442 | { | |
443 | // TODO | |
444 | return 0; | |
445 | } | |
446 | ||
447 | long wxComboBox::GetLastPosition() const | |
448 | { | |
449 | // TODO | |
450 | return 0; | |
451 | } | |
452 | ||
453 | void wxComboBox::Replace(long from, long to, const wxString& value) | |
454 | { | |
455 | // TODO | |
456 | } | |
457 | ||
458 | void wxComboBox::Remove(long from, long to) | |
459 | { | |
460 | // TODO | |
461 | } | |
462 | ||
463 | void wxComboBox::SetSelection(long from, long to) | |
464 | { | |
465 | // TODO | |
466 | } | |
467 | ||
468 | int wxComboBox::DoAppend(const wxString& item) | |
469 | { | |
470 | return m_choice->DoAppend( item ) ; | |
471 | } | |
472 | ||
473 | int wxComboBox::DoInsert(const wxString& item, int pos) | |
474 | { | |
475 | return m_choice->DoInsert( item , pos ) ; | |
476 | } | |
477 | ||
478 | void wxComboBox::DoSetItemClientData(int n, void* clientData) | |
479 | { | |
480 | return m_choice->DoSetItemClientData( n , clientData ) ; | |
481 | } | |
482 | ||
483 | void* wxComboBox::DoGetItemClientData(int n) const | |
484 | { | |
485 | return m_choice->DoGetItemClientData( n ) ; | |
486 | } | |
487 | ||
488 | void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData) | |
489 | { | |
490 | return m_choice->DoSetItemClientObject( n , clientData ) ; | |
491 | } | |
492 | ||
493 | wxClientData* wxComboBox::DoGetItemClientObject(int n) const | |
494 | { | |
495 | return m_choice->DoGetItemClientObject( n ) ; | |
496 | } | |
497 | ||
498 | void wxComboBox::FreeData() | |
499 | { | |
500 | if ( HasClientObjectData() ) | |
501 | { | |
502 | size_t count = GetCount(); | |
503 | for ( size_t n = 0; n < count; n++ ) | |
504 | { | |
505 | SetClientObject( n, NULL ); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | void wxComboBox::Delete(int n) | |
511 | { | |
512 | // force client object deletion | |
513 | if( HasClientObjectData() ) | |
514 | SetClientObject( n, NULL ); | |
515 | m_choice->Delete( n ); | |
516 | } | |
517 | ||
518 | void wxComboBox::Clear() | |
519 | { | |
520 | FreeData(); | |
521 | m_choice->Clear(); | |
522 | } | |
523 | ||
524 | int wxComboBox::GetSelection() const | |
525 | { | |
526 | return m_choice->GetSelection(); | |
527 | } | |
528 | ||
529 | void wxComboBox::SetSelection(int n) | |
530 | { | |
531 | m_choice->SetSelection( n ); | |
532 | ||
533 | if ( m_text != NULL ) | |
534 | { | |
535 | m_text->SetValue( GetString( n ) ); | |
536 | } | |
537 | } | |
538 | ||
539 | int wxComboBox::FindString(const wxString& s) const | |
540 | { | |
541 | return m_choice->FindString( s ); | |
542 | } | |
543 | ||
544 | wxString wxComboBox::GetString(int n) const | |
545 | { | |
546 | return m_choice->GetString( n ); | |
547 | } | |
548 | ||
549 | wxString wxComboBox::GetStringSelection() const | |
550 | { | |
551 | int sel = GetSelection (); | |
552 | if (sel > -1) | |
553 | return wxString(this->GetString (sel)); | |
554 | else | |
555 | return wxEmptyString; | |
556 | } | |
557 | ||
558 | bool wxComboBox::SetStringSelection(const wxString& sel) | |
559 | { | |
560 | int s = FindString (sel); | |
561 | if (s > -1) | |
562 | { | |
563 | SetSelection (s); | |
564 | return TRUE; | |
565 | } | |
566 | else | |
567 | return FALSE; | |
568 | } | |
569 | ||
570 | void wxComboBox::SetString(int n, const wxString& s) | |
571 | { | |
572 | m_choice->SetString( n , s ) ; | |
573 | } | |
574 | ||
575 | ||
576 | wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) ) | |
577 | { | |
578 | wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId ); | |
579 | event.SetInt(GetSelection()); | |
580 | event.SetEventObject(this); | |
581 | event.SetString(GetStringSelection()); | |
582 | ProcessCommand(event); | |
583 | return noErr ; | |
584 | } | |
585 |