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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 | if ( event.GetKeyCode() == WXK_RETURN ) | |
72 | { | |
73 | wxString value = GetValue(); | |
74 | ||
75 | if ( m_cb->GetCount() == 0 ) | |
76 | { | |
77 | // make Enter generate "selected" event if there is only one item | |
78 | // in the combobox - without it, it's impossible to select it at | |
79 | // all! | |
80 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
81 | event.SetInt( 0 ); | |
82 | event.SetString( value ); | |
83 | event.SetEventObject( m_cb ); | |
84 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
85 | } | |
86 | else | |
87 | { | |
88 | // add the item to the list if it's not there yet | |
89 | if ( m_cb->FindString(value) == wxNOT_FOUND ) | |
90 | { | |
91 | m_cb->Append(value); | |
92 | m_cb->SetStringSelection(value); | |
93 | ||
94 | // and generate the selected event for it | |
95 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
96 | event.SetInt( m_cb->GetCount() - 1 ); | |
97 | event.SetString( value ); | |
98 | event.SetEventObject( m_cb ); | |
99 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
100 | } | |
101 | ||
102 | // This will invoke the dialog default action, such | |
103 | // as the clicking the default button. | |
104 | ||
105 | wxWindow *parent = GetParent(); | |
106 | while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) { | |
107 | parent = parent->GetParent() ; | |
108 | } | |
109 | if ( parent && parent->GetDefaultItem() ) | |
110 | { | |
111 | wxButton *def = wxDynamicCast(parent->GetDefaultItem(), | |
112 | wxButton); | |
113 | if ( def && def->IsEnabled() ) | |
114 | { | |
115 | wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() ); | |
116 | event.SetEventObject(def); | |
117 | def->Command(event); | |
118 | return ; | |
119 | } | |
120 | } | |
121 | ||
122 | return; | |
123 | } | |
124 | } | |
125 | ||
126 | event.Skip(); | |
127 | } | |
128 | ||
129 | private: | |
130 | wxComboBox *m_cb; | |
131 | ||
132 | DECLARE_EVENT_TABLE() | |
133 | }; | |
134 | ||
135 | BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl) | |
136 | EVT_CHAR( wxComboBoxText::OnChar) | |
137 | END_EVENT_TABLE() | |
138 | ||
139 | class wxComboBoxChoice : public wxChoice | |
140 | { | |
141 | public: | |
142 | wxComboBoxChoice(wxComboBox *cb, int style) | |
143 | : wxChoice( cb , 1 ) | |
144 | { | |
145 | m_cb = cb; | |
146 | } | |
147 | int GetPopupWidth() const | |
148 | { | |
149 | switch ( GetWindowVariant() ) | |
150 | { | |
151 | case wxWINDOW_VARIANT_NORMAL : | |
152 | case wxWINDOW_VARIANT_LARGE : | |
153 | return 24 ; | |
154 | default : | |
155 | return 21 ; | |
156 | } | |
157 | } | |
158 | ||
159 | protected: | |
160 | void OnChoice( wxCommandEvent& e ) | |
161 | { | |
162 | wxString s = e.GetString(); | |
163 | ||
164 | m_cb->DelegateChoice( s ); | |
165 | wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
166 | event2.SetInt(m_cb->GetSelection()); | |
167 | event2.SetEventObject(m_cb); | |
168 | event2.SetString(m_cb->GetStringSelection()); | |
169 | m_cb->ProcessCommand(event2); | |
170 | } | |
171 | virtual wxSize DoGetBestSize() const | |
172 | { | |
173 | wxSize sz = wxChoice::DoGetBestSize() ; | |
174 | if (! m_cb->HasFlag(wxCB_READONLY) ) | |
175 | sz.x = GetPopupWidth() ; | |
176 | return sz ; | |
177 | } | |
178 | ||
179 | private: | |
180 | wxComboBox *m_cb; | |
181 | ||
182 | DECLARE_EVENT_TABLE() | |
183 | }; | |
184 | ||
185 | BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice) | |
186 | EVT_CHOICE(-1, wxComboBoxChoice::OnChoice) | |
187 | END_EVENT_TABLE() | |
188 | ||
189 | wxComboBox::~wxComboBox() | |
190 | { | |
191 | // delete client objects | |
192 | FreeData(); | |
193 | ||
194 | // delete the controls now, don't leave them alive even though they would | |
195 | // still be eventually deleted by our parent - but it will be too late, the | |
196 | // user code expects them to be gone now | |
197 | if (m_text != NULL) { | |
198 | delete m_text; | |
199 | m_text = NULL; | |
200 | } | |
201 | if (m_choice != NULL) { | |
202 | delete m_choice; | |
203 | m_choice = NULL; | |
204 | } | |
205 | } | |
206 | ||
207 | ||
208 | // ---------------------------------------------------------------------------- | |
209 | // geometry | |
210 | // ---------------------------------------------------------------------------- | |
211 | ||
212 | wxSize wxComboBox::DoGetBestSize() const | |
213 | { | |
214 | if (!m_choice && !m_text) | |
215 | return GetSize(); | |
216 | wxSize size = m_choice->GetBestSize(); | |
217 | ||
218 | if ( m_text != NULL ) | |
219 | { | |
220 | wxSize sizeText = m_text->GetBestSize(); | |
221 | if (sizeText.y > size.y) | |
222 | size.y = sizeText.y; | |
223 | size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN; | |
224 | size.x += TEXTFOCUSBORDER ; | |
225 | size.y += 2 * TEXTFOCUSBORDER ; | |
226 | } | |
227 | else | |
228 | { | |
229 | // clipping is too tight | |
230 | size.y += 1 ; | |
231 | } | |
232 | return size; | |
233 | } | |
234 | ||
235 | void wxComboBox::DoMoveWindow(int x, int y, int width, int height) | |
236 | { | |
237 | wxControl::DoMoveWindow(x, y, width , height ); | |
238 | ||
239 | if ( m_text == NULL ) | |
240 | { | |
241 | // we might not be fully constructed yet, therefore watch out... | |
242 | if ( m_choice ) | |
243 | m_choice->SetSize(0, 0 , width, -1); | |
244 | } | |
245 | else | |
246 | { | |
247 | wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN; | |
248 | m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1 ); | |
249 | // put it at an inset of 1 to have outer area shadows drawn as well | |
250 | m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -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 | wxSize csize = size; | |
329 | if ( style & wxCB_READONLY ) | |
330 | { | |
331 | m_text = NULL; | |
332 | } | |
333 | else | |
334 | { | |
335 | m_text = new wxComboBoxText(this); | |
336 | if ( size.y == -1 ) | |
337 | { | |
338 | csize.y = m_text->GetSize().y ; | |
339 | csize.y += 2 * TEXTFOCUSBORDER ; | |
340 | } | |
341 | } | |
342 | ||
343 | DoSetSize(pos.x, pos.y, csize.x, csize.y); | |
344 | ||
345 | for ( int i = 0 ; i < n ; i++ ) | |
346 | { | |
347 | m_choice->DoAppend( choices[ i ] ); | |
348 | } | |
349 | ||
350 | SetBestSize(size); // Needed because it is a wxControlWithItems | |
351 | ||
352 | return TRUE; | |
353 | } | |
354 | ||
355 | wxString wxComboBox::GetValue() const | |
356 | { | |
357 | wxString result; | |
358 | ||
359 | if ( m_text == NULL ) | |
360 | { | |
361 | result = m_choice->GetString( m_choice->GetSelection() ); | |
362 | } | |
363 | else | |
364 | { | |
365 | result = m_text->GetValue(); | |
366 | } | |
367 | ||
368 | return result; | |
369 | } | |
370 | ||
371 | int wxComboBox::GetCount() const | |
372 | { | |
373 | return m_choice->GetCount() ; | |
374 | } | |
375 | ||
376 | void wxComboBox::SetValue(const wxString& value) | |
377 | { | |
378 | if ( HasFlag(wxCB_READONLY) ) | |
379 | SetStringSelection( value ) ; | |
380 | else | |
381 | m_text->SetValue( value ); | |
382 | } | |
383 | ||
384 | // Clipboard operations | |
385 | void wxComboBox::Copy() | |
386 | { | |
387 | if ( m_text != NULL ) | |
388 | { | |
389 | m_text->Copy(); | |
390 | } | |
391 | } | |
392 | ||
393 | void wxComboBox::Cut() | |
394 | { | |
395 | if ( m_text != NULL ) | |
396 | { | |
397 | m_text->Cut(); | |
398 | } | |
399 | } | |
400 | ||
401 | void wxComboBox::Paste() | |
402 | { | |
403 | if ( m_text != NULL ) | |
404 | { | |
405 | m_text->Paste(); | |
406 | } | |
407 | } | |
408 | ||
409 | void wxComboBox::SetEditable(bool editable) | |
410 | { | |
411 | if ( ( m_text == NULL ) && editable ) | |
412 | { | |
413 | m_text = new wxComboBoxText( this ); | |
414 | } | |
415 | else if ( ( m_text != NULL ) && !editable ) | |
416 | { | |
417 | delete m_text; | |
418 | m_text = NULL; | |
419 | } | |
420 | ||
421 | int currentX, currentY; | |
422 | GetPosition( ¤tX, ¤tY ); | |
423 | ||
424 | int currentW, currentH; | |
425 | GetSize( ¤tW, ¤tH ); | |
426 | ||
427 | DoMoveWindow( currentX, currentY, currentW, currentH ); | |
428 | } | |
429 | ||
430 | void wxComboBox::SetInsertionPoint(long pos) | |
431 | { | |
432 | // TODO | |
433 | } | |
434 | ||
435 | void wxComboBox::SetInsertionPointEnd() | |
436 | { | |
437 | // TODO | |
438 | } | |
439 | ||
440 | long wxComboBox::GetInsertionPoint() const | |
441 | { | |
442 | // TODO | |
443 | return 0; | |
444 | } | |
445 | ||
446 | long wxComboBox::GetLastPosition() const | |
447 | { | |
448 | // TODO | |
449 | return 0; | |
450 | } | |
451 | ||
452 | void wxComboBox::Replace(long from, long to, const wxString& value) | |
453 | { | |
454 | // TODO | |
455 | } | |
456 | ||
457 | void wxComboBox::Remove(long from, long to) | |
458 | { | |
459 | // TODO | |
460 | } | |
461 | ||
462 | void wxComboBox::SetSelection(long from, long to) | |
463 | { | |
464 | // TODO | |
465 | } | |
466 | ||
467 | int wxComboBox::DoAppend(const wxString& item) | |
468 | { | |
469 | return m_choice->DoAppend( item ) ; | |
470 | } | |
471 | ||
472 | int wxComboBox::DoInsert(const wxString& item, int pos) | |
473 | { | |
474 | return m_choice->DoInsert( item , pos ) ; | |
475 | } | |
476 | ||
477 | void wxComboBox::DoSetItemClientData(int n, void* clientData) | |
478 | { | |
479 | return m_choice->DoSetItemClientData( n , clientData ) ; | |
480 | } | |
481 | ||
482 | void* wxComboBox::DoGetItemClientData(int n) const | |
483 | { | |
484 | return m_choice->DoGetItemClientData( n ) ; | |
485 | } | |
486 | ||
487 | void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData) | |
488 | { | |
489 | return m_choice->DoSetItemClientObject( n , clientData ) ; | |
490 | } | |
491 | ||
492 | wxClientData* wxComboBox::DoGetItemClientObject(int n) const | |
493 | { | |
494 | return m_choice->DoGetItemClientObject( n ) ; | |
495 | } | |
496 | ||
497 | void wxComboBox::FreeData() | |
498 | { | |
499 | if ( HasClientObjectData() ) | |
500 | { | |
501 | size_t count = GetCount(); | |
502 | for ( size_t n = 0; n < count; n++ ) | |
503 | { | |
504 | SetClientObject( n, NULL ); | |
505 | } | |
506 | } | |
507 | } | |
508 | ||
509 | void wxComboBox::Delete(int n) | |
510 | { | |
511 | // force client object deletion | |
512 | if( HasClientObjectData() ) | |
513 | SetClientObject( n, NULL ); | |
514 | m_choice->Delete( n ); | |
515 | } | |
516 | ||
517 | void wxComboBox::Clear() | |
518 | { | |
519 | FreeData(); | |
520 | m_choice->Clear(); | |
521 | } | |
522 | ||
523 | int wxComboBox::GetSelection() const | |
524 | { | |
525 | return m_choice->GetSelection(); | |
526 | } | |
527 | ||
528 | void wxComboBox::SetSelection(int n) | |
529 | { | |
530 | m_choice->SetSelection( n ); | |
531 | ||
532 | if ( m_text != NULL ) | |
533 | { | |
534 | m_text->SetValue( GetString( n ) ); | |
535 | } | |
536 | } | |
537 | ||
538 | int wxComboBox::FindString(const wxString& s) const | |
539 | { | |
540 | return m_choice->FindString( s ); | |
541 | } | |
542 | ||
543 | wxString wxComboBox::GetString(int n) const | |
544 | { | |
545 | return m_choice->GetString( n ); | |
546 | } | |
547 | ||
548 | wxString wxComboBox::GetStringSelection() const | |
549 | { | |
550 | int sel = GetSelection (); | |
551 | if (sel > -1) | |
552 | return wxString(this->GetString (sel)); | |
553 | else | |
554 | return wxEmptyString; | |
555 | } | |
556 | ||
557 | bool wxComboBox::SetStringSelection(const wxString& sel) | |
558 | { | |
559 | int s = FindString (sel); | |
560 | if (s > -1) | |
561 | { | |
562 | SetSelection (s); | |
563 | return TRUE; | |
564 | } | |
565 | else | |
566 | return FALSE; | |
567 | } | |
568 | ||
569 | void wxComboBox::SetString(int n, const wxString& s) | |
570 | { | |
571 | m_choice->SetString( n , s ) ; | |
572 | } | |
573 | ||
574 | ||
575 | wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) ) | |
576 | { | |
577 | wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId ); | |
578 | event.SetInt(GetSelection()); | |
579 | event.SetEventObject(this); | |
580 | event.SetString(GetStringSelection()); | |
581 | ProcessCommand(event); | |
582 | return noErr ; | |
583 | } | |
584 |