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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 | ||
67 | protected: | |
68 | void OnChar( wxKeyEvent& event ) | |
69 | { | |
70 | if ( event.GetKeyCode() == WXK_RETURN ) | |
71 | { | |
72 | wxString value = GetValue(); | |
73 | ||
74 | if ( m_cb->GetCount() == 0 ) | |
75 | { | |
76 | // make Enter generate "selected" event if there is only one item | |
77 | // in the combobox - without it, it's impossible to select it at | |
78 | // all! | |
79 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
80 | event.SetInt( 0 ); | |
81 | event.SetString( value ); | |
82 | event.SetEventObject( m_cb ); | |
83 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
84 | } | |
85 | else | |
86 | { | |
87 | // add the item to the list if it's not there yet | |
88 | if ( m_cb->FindString(value) == wxNOT_FOUND ) | |
89 | { | |
90 | m_cb->Append(value); | |
91 | m_cb->SetStringSelection(value); | |
92 | ||
93 | // and generate the selected event for it | |
94 | wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
95 | event.SetInt( m_cb->GetCount() - 1 ); | |
96 | event.SetString( value ); | |
97 | event.SetEventObject( m_cb ); | |
98 | m_cb->GetEventHandler()->ProcessEvent( event ); | |
99 | } | |
100 | ||
101 | // This will invoke the dialog default action, such | |
102 | // as the clicking the default button. | |
103 | ||
104 | wxWindow *parent = GetParent(); | |
105 | while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) { | |
106 | parent = parent->GetParent() ; | |
107 | } | |
108 | if ( parent && parent->GetDefaultItem() ) | |
109 | { | |
110 | wxButton *def = wxDynamicCast(parent->GetDefaultItem(), | |
111 | wxButton); | |
112 | if ( def && def->IsEnabled() ) | |
113 | { | |
114 | wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() ); | |
115 | event.SetEventObject(def); | |
116 | def->Command(event); | |
117 | return ; | |
118 | } | |
119 | } | |
120 | ||
121 | return; | |
122 | } | |
123 | } | |
124 | ||
125 | event.Skip(); | |
126 | } | |
127 | ||
128 | private: | |
129 | wxComboBox *m_cb; | |
130 | ||
131 | DECLARE_EVENT_TABLE() | |
132 | }; | |
133 | ||
134 | BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl) | |
135 | EVT_CHAR( wxComboBoxText::OnChar) | |
136 | END_EVENT_TABLE() | |
137 | ||
138 | class wxComboBoxChoice : public wxChoice | |
139 | { | |
140 | public: | |
141 | wxComboBoxChoice(wxComboBox *cb, int style) | |
142 | : wxChoice( cb , 1 ) | |
143 | { | |
144 | m_cb = cb; | |
145 | } | |
146 | ||
147 | protected: | |
148 | void OnChoice( wxCommandEvent& e ) | |
149 | { | |
150 | wxString s = e.GetString(); | |
151 | ||
152 | m_cb->DelegateChoice( s ); | |
153 | wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() ); | |
154 | event2.SetInt(m_cb->GetSelection()); | |
155 | event2.SetEventObject(m_cb); | |
156 | event2.SetString(m_cb->GetStringSelection()); | |
157 | m_cb->ProcessCommand(event2); | |
158 | } | |
159 | virtual wxSize DoGetBestSize() const | |
160 | { | |
161 | wxSize sz = wxChoice::DoGetBestSize() ; | |
162 | if (! m_cb->HasFlag(wxCB_READONLY) ) | |
163 | sz.x = POPUPWIDTH; | |
164 | return sz ; | |
165 | } | |
166 | ||
167 | private: | |
168 | wxComboBox *m_cb; | |
169 | ||
170 | DECLARE_EVENT_TABLE() | |
171 | }; | |
172 | ||
173 | BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice) | |
174 | EVT_CHOICE(-1, wxComboBoxChoice::OnChoice) | |
175 | END_EVENT_TABLE() | |
176 | ||
177 | wxComboBox::~wxComboBox() | |
178 | { | |
179 | // delete client objects | |
180 | FreeData(); | |
181 | ||
182 | // delete the controls now, don't leave them alive even though they would | |
183 | // still be eventually deleted by our parent - but it will be too late, the | |
184 | // user code expects them to be gone now | |
185 | if (m_text != NULL) { | |
186 | delete m_text; | |
187 | m_text = NULL; | |
188 | } | |
189 | if (m_choice != NULL) { | |
190 | delete m_choice; | |
191 | m_choice = NULL; | |
192 | } | |
193 | } | |
194 | ||
195 | ||
196 | // ---------------------------------------------------------------------------- | |
197 | // geometry | |
198 | // ---------------------------------------------------------------------------- | |
199 | ||
200 | wxSize wxComboBox::DoGetBestSize() const | |
201 | { | |
202 | if (!m_choice && !m_text) | |
203 | return GetSize(); | |
204 | wxSize size = m_choice->GetBestSize(); | |
205 | ||
206 | if ( m_text != NULL ) | |
207 | { | |
208 | wxSize sizeText = m_text->GetBestSize(); | |
209 | if (sizeText.y > size.y) | |
210 | size.y = sizeText.y; | |
211 | size.x = POPUPWIDTH + sizeText.x + MARGIN; | |
212 | } | |
213 | ||
214 | return size; | |
215 | } | |
216 | ||
217 | void wxComboBox::DoMoveWindow(int x, int y, int width, int height) { | |
218 | height = POPUPHEIGHT; | |
219 | int origin = 0; | |
220 | #if TARGET_API_MAC_OSX | |
221 | // give the controls some padding so that the text ctrl's borders | |
222 | // and blue highlight can appear | |
223 | origin = 4; | |
224 | #endif | |
225 | ||
226 | wxControl::DoMoveWindow(x, y, width + origin, height + origin); | |
227 | ||
228 | if ( m_text == NULL ) | |
229 | { | |
230 | // we might not be fully constructed yet, therefore watch out... | |
231 | if ( m_choice ) | |
232 | m_choice->SetSize(0, 0 , width, -1); | |
233 | } | |
234 | else | |
235 | { | |
236 | wxCoord wText = width - POPUPWIDTH - MARGIN; | |
237 | #if TARGET_API_MAC_OSX | |
238 | // also, we need to shrink the size of the wxTextCtrl a bit | |
239 | // to make it appear properly on OS X. | |
240 | height -= 8; | |
241 | wText -= 8; | |
242 | #endif | |
243 | m_text->SetSize(origin, origin, wText, height); | |
244 | m_choice->SetSize(origin + wText + MARGIN, 0, POPUPWIDTH, -1); | |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | ||
250 | // ---------------------------------------------------------------------------- | |
251 | // operations forwarded to the subcontrols | |
252 | // ---------------------------------------------------------------------------- | |
253 | ||
254 | bool wxComboBox::Enable(bool enable) | |
255 | { | |
256 | if ( !wxControl::Enable(enable) ) | |
257 | return FALSE; | |
258 | ||
259 | return TRUE; | |
260 | } | |
261 | ||
262 | bool wxComboBox::Show(bool show) | |
263 | { | |
264 | if ( !wxControl::Show(show) ) | |
265 | return FALSE; | |
266 | ||
267 | return TRUE; | |
268 | } | |
269 | ||
270 | void wxComboBox::SetFocus() | |
271 | { | |
272 | if ( m_text != NULL) { | |
273 | m_text->SetFocus(); | |
274 | } | |
275 | } | |
276 | ||
277 | ||
278 | void wxComboBox::DelegateTextChanged( const wxString& value ) | |
279 | { | |
280 | SetStringSelection( value ); | |
281 | } | |
282 | ||
283 | ||
284 | void wxComboBox::DelegateChoice( const wxString& value ) | |
285 | { | |
286 | SetStringSelection( value ); | |
287 | } | |
288 | ||
289 | ||
290 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
291 | const wxString& value, | |
292 | const wxPoint& pos, | |
293 | const wxSize& size, | |
294 | const wxArrayString& choices, | |
295 | long style, | |
296 | const wxValidator& validator, | |
297 | const wxString& name) | |
298 | { | |
299 | wxCArrayString chs( choices ); | |
300 | ||
301 | return Create( parent, id, value, pos, size, chs.GetCount(), | |
302 | chs.GetStrings(), style, validator, name ); | |
303 | } | |
304 | ||
305 | ||
306 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, | |
307 | const wxString& value, | |
308 | const wxPoint& pos, | |
309 | const wxSize& size, | |
310 | int n, const wxString choices[], | |
311 | long style, | |
312 | const wxValidator& validator, | |
313 | const wxString& name) | |
314 | { | |
315 | if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style , | |
316 | wxDefaultValidator, name) ) | |
317 | { | |
318 | return FALSE; | |
319 | } | |
320 | ||
321 | m_choice = new wxComboBoxChoice(this, style ); | |
322 | wxSize csize = size; | |
323 | if ( style & wxCB_READONLY ) | |
324 | { | |
325 | m_text = NULL; | |
326 | } | |
327 | else | |
328 | { | |
329 | m_text = new wxComboBoxText(this); | |
330 | if ( size.y == -1 ) { | |
331 | csize.y = m_text->GetSize().y ; | |
332 | } | |
333 | } | |
334 | ||
335 | DoSetSize(pos.x, pos.y, csize.x, csize.y); | |
336 | ||
337 | for ( int i = 0 ; i < n ; i++ ) | |
338 | { | |
339 | m_choice->DoAppend( choices[ i ] ); | |
340 | } | |
341 | ||
342 | SetBestSize(size); // Needed because it is a wxControlWithItems | |
343 | ||
344 | return TRUE; | |
345 | } | |
346 | ||
347 | wxString wxComboBox::GetValue() const | |
348 | { | |
349 | wxString result; | |
350 | ||
351 | if ( m_text == NULL ) | |
352 | { | |
353 | result = m_choice->GetString( m_choice->GetSelection() ); | |
354 | } | |
355 | else | |
356 | { | |
357 | result = m_text->GetValue(); | |
358 | } | |
359 | ||
360 | return result; | |
361 | } | |
362 | ||
363 | int wxComboBox::GetCount() const | |
364 | { | |
365 | return m_choice->GetCount() ; | |
366 | } | |
367 | ||
368 | void wxComboBox::SetValue(const wxString& value) | |
369 | { | |
370 | int s = FindString (value); | |
371 | if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) ) | |
372 | { | |
373 | m_choice->Append(value) ; | |
374 | } | |
375 | SetStringSelection( value ) ; | |
376 | } | |
377 | ||
378 | // Clipboard operations | |
379 | void wxComboBox::Copy() | |
380 | { | |
381 | if ( m_text != NULL ) | |
382 | { | |
383 | m_text->Copy(); | |
384 | } | |
385 | } | |
386 | ||
387 | void wxComboBox::Cut() | |
388 | { | |
389 | if ( m_text != NULL ) | |
390 | { | |
391 | m_text->Cut(); | |
392 | } | |
393 | } | |
394 | ||
395 | void wxComboBox::Paste() | |
396 | { | |
397 | if ( m_text != NULL ) | |
398 | { | |
399 | m_text->Paste(); | |
400 | } | |
401 | } | |
402 | ||
403 | void wxComboBox::SetEditable(bool editable) | |
404 | { | |
405 | if ( ( m_text == NULL ) && editable ) | |
406 | { | |
407 | m_text = new wxComboBoxText( this ); | |
408 | } | |
409 | else if ( ( m_text != NULL ) && !editable ) | |
410 | { | |
411 | delete m_text; | |
412 | m_text = NULL; | |
413 | } | |
414 | ||
415 | int currentX, currentY; | |
416 | GetPosition( ¤tX, ¤tY ); | |
417 | ||
418 | int currentW, currentH; | |
419 | GetSize( ¤tW, ¤tH ); | |
420 | ||
421 | DoMoveWindow( currentX, currentY, currentW, currentH ); | |
422 | } | |
423 | ||
424 | void wxComboBox::SetInsertionPoint(long pos) | |
425 | { | |
426 | // TODO | |
427 | } | |
428 | ||
429 | void wxComboBox::SetInsertionPointEnd() | |
430 | { | |
431 | // TODO | |
432 | } | |
433 | ||
434 | long wxComboBox::GetInsertionPoint() const | |
435 | { | |
436 | // TODO | |
437 | return 0; | |
438 | } | |
439 | ||
440 | long wxComboBox::GetLastPosition() const | |
441 | { | |
442 | // TODO | |
443 | return 0; | |
444 | } | |
445 | ||
446 | void wxComboBox::Replace(long from, long to, const wxString& value) | |
447 | { | |
448 | // TODO | |
449 | } | |
450 | ||
451 | void wxComboBox::Remove(long from, long to) | |
452 | { | |
453 | // TODO | |
454 | } | |
455 | ||
456 | void wxComboBox::SetSelection(long from, long to) | |
457 | { | |
458 | // TODO | |
459 | } | |
460 | ||
461 | int wxComboBox::DoAppend(const wxString& item) | |
462 | { | |
463 | return m_choice->DoAppend( item ) ; | |
464 | } | |
465 | ||
466 | int wxComboBox::DoInsert(const wxString& item, int pos) | |
467 | { | |
468 | return m_choice->DoInsert( item , pos ) ; | |
469 | } | |
470 | ||
471 | void wxComboBox::DoSetItemClientData(int n, void* clientData) | |
472 | { | |
473 | return m_choice->DoSetItemClientData( n , clientData ) ; | |
474 | } | |
475 | ||
476 | void* wxComboBox::DoGetItemClientData(int n) const | |
477 | { | |
478 | return m_choice->DoGetItemClientData( n ) ; | |
479 | } | |
480 | ||
481 | void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData) | |
482 | { | |
483 | return m_choice->DoSetItemClientObject( n , clientData ) ; | |
484 | } | |
485 | ||
486 | wxClientData* wxComboBox::DoGetItemClientObject(int n) const | |
487 | { | |
488 | return m_choice->DoGetItemClientObject( n ) ; | |
489 | } | |
490 | ||
491 | void wxComboBox::FreeData() | |
492 | { | |
493 | if ( HasClientObjectData() ) | |
494 | { | |
495 | size_t count = GetCount(); | |
496 | for ( size_t n = 0; n < count; n++ ) | |
497 | { | |
498 | SetClientObject( n, NULL ); | |
499 | } | |
500 | } | |
501 | } | |
502 | ||
503 | void wxComboBox::Delete(int n) | |
504 | { | |
505 | // force client object deletion | |
506 | if( HasClientObjectData() ) | |
507 | SetClientObject( n, NULL ); | |
508 | m_choice->Delete( n ); | |
509 | } | |
510 | ||
511 | void wxComboBox::Clear() | |
512 | { | |
513 | FreeData(); | |
514 | m_choice->Clear(); | |
515 | } | |
516 | ||
517 | int wxComboBox::GetSelection() const | |
518 | { | |
519 | return m_choice->GetSelection(); | |
520 | } | |
521 | ||
522 | void wxComboBox::SetSelection(int n) | |
523 | { | |
524 | m_choice->SetSelection( n ); | |
525 | ||
526 | if ( m_text != NULL ) | |
527 | { | |
528 | m_text->SetValue( GetString( n ) ); | |
529 | } | |
530 | } | |
531 | ||
532 | int wxComboBox::FindString(const wxString& s) const | |
533 | { | |
534 | return m_choice->FindString( s ); | |
535 | } | |
536 | ||
537 | wxString wxComboBox::GetString(int n) const | |
538 | { | |
539 | return m_choice->GetString( n ); | |
540 | } | |
541 | ||
542 | wxString wxComboBox::GetStringSelection() const | |
543 | { | |
544 | int sel = GetSelection (); | |
545 | if (sel > -1) | |
546 | return wxString(this->GetString (sel)); | |
547 | else | |
548 | return wxEmptyString; | |
549 | } | |
550 | ||
551 | bool wxComboBox::SetStringSelection(const wxString& sel) | |
552 | { | |
553 | int s = FindString (sel); | |
554 | if (s > -1) | |
555 | { | |
556 | SetSelection (s); | |
557 | return TRUE; | |
558 | } | |
559 | else | |
560 | return FALSE; | |
561 | } | |
562 | ||
563 | void wxComboBox::SetString(int n, const wxString& s) | |
564 | { | |
565 | m_choice->SetString( n , s ) ; | |
566 | } | |
567 | ||
568 | ||
569 | wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) ) | |
570 | { | |
571 | wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId ); | |
572 | event.SetInt(GetSelection()); | |
573 | event.SetEventObject(this); | |
574 | event.SetString(GetStringSelection()); | |
575 | ProcessCommand(event); | |
576 | return noErr ; | |
577 | } | |
578 |