projects / wxWidgets.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Call wxEvtHandler::TryBefore() only once from ProcessEvent().
[wxWidgets.git] / src / common / event.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/event.cpp
3 // Purpose: Event classes
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #include "wx/event.h"
28 #include "wx/evtloop.h"
29
30 #ifndef WX_PRECOMP
31 #include "wx/list.h"
32 #include "wx/log.h"
33 #include "wx/app.h"
34 #include "wx/utils.h"
35 #include "wx/stopwatch.h"
36 #include "wx/module.h"
37
38 #if wxUSE_GUI
39 #include "wx/window.h"
40 #include "wx/control.h"
41 #include "wx/dc.h"
42 #include "wx/spinbutt.h"
43 #include "wx/textctrl.h"
44 #include "wx/validate.h"
45 #endif // wxUSE_GUI
46 #endif
47
48 #include "wx/thread.h"
49
50 #if wxUSE_BASE
51 #include "wx/scopedptr.h"
52
53 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
54 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
55 #endif // wxUSE_BASE
56
57 // ----------------------------------------------------------------------------
58 // wxWin macros
59 // ----------------------------------------------------------------------------
60
61 #if wxUSE_BASE
62 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
63 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
64 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
65 #endif // wxUSE_BASE
66
67 #if wxUSE_GUI
68 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxCommandEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
102 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
103 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
104 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
105 #endif // wxUSE_GUI
106
107 #if wxUSE_BASE
108
109 const wxEventTable *wxEvtHandler::GetEventTable() const
110 { return &wxEvtHandler::sm_eventTable; }
111
112 const wxEventTable wxEvtHandler::sm_eventTable =
113 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
114
115 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
116 { return wxEvtHandler::sm_eventHashTable; }
117
118 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
119
120 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
121 { DECLARE_EVENT_TABLE_TERMINATOR() };
122
123
124 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
125 // leaked, so we need to manually clean up all event tables before checking for
126 // the memory leaks when using it, however this breaks re-initializing the
127 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
128 // event tables won't be rebuilt the next time, so disable this by default
129 #if wxUSE_MEMORY_TRACING
130
131 class wxEventTableEntryModule: public wxModule
132 {
133 public:
134 wxEventTableEntryModule() { }
135 virtual bool OnInit() { return true; }
136 virtual void OnExit() { wxEventHashTable::ClearAll(); }
137
138 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
139 };
140
141 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
142
143 #endif // wxUSE_MEMORY_TRACING
144
145 // ----------------------------------------------------------------------------
146 // global variables
147 // ----------------------------------------------------------------------------
148
149 // common event types are defined here, other event types are defined by the
150 // components which use them
151
152 const wxEventType wxEVT_FIRST = 10000;
153 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
154
155 DEFINE_EVENT_TYPE(wxEVT_NULL)
156 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
157
158 #endif // wxUSE_BASE
159
160 #if wxUSE_GUI
161
162 wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent );
163 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent );
164 wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent );
165 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent );
166 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent );
167 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent );
168 wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent );
169 wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent );
170 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent );
171 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent );
172 wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent );
173 wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent );
174 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent );
175 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent );
176 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent );
177 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent );
178 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent );
179 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent );
180 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
181 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
182
183 // Mouse event types
184 wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent );
185 wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent );
186 wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent );
187 wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent );
188 wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent );
189 wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent );
190 wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent );
191 wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent );
192 wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent );
193 wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent );
194 wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent );
195 wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent );
196 wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent );
197 wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent );
198 wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent );
199 wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent );
200 wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent );
201 wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent );
202 wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent );
203 wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
204 wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
205 wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
206
207 // Character input event type
208 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
209 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
210 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
211 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
212 wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent );
213 #if wxUSE_HOTKEY
214 wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent );
215 #endif
216
217 // Set cursor event
218 wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent );
219
220 // wxScrollbar and wxSlider event identifiers
221 wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent );
222 wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent );
223 wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent );
224 wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent );
225 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent );
226 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent );
227 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent );
228 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent );
229 wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent );
230
231 // Due to a bug in older wx versions, wxSpinEvents were being sent with type of
232 // wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But
233 // with the type-safe events in place, these event types are associated with
234 // wxScrollEvent. To allow handling of spin events, new event types have been
235 // defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility
236 // the spin event types are being initialized with the scroll event types.
237
238 #if wxUSE_SPINBTN
239
240 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_UP, wxSpinEvent, wxEVT_SCROLL_LINEUP );
241 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_DOWN, wxSpinEvent, wxEVT_SCROLL_LINEDOWN );
242 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN, wxSpinEvent, wxEVT_SCROLL_THUMBTRACK );
243
244 #endif // wxUSE_SPINBTN
245
246 // Scroll events from wxWindow
247 wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent );
248 wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent );
249 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent );
250 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent );
251 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent );
252 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent );
253 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent );
254 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent );
255
256 // System events
257 wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent );
258 wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent );
259 wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent );
260 wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent );
261 wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent );
262 wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent );
263 wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent );
264 wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent );
265 wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent );
266 wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent );
267 wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent );
268 wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent );
269 wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent );
270 wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent );
271 wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent );
272 wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent );
273 wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent );
274 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent );
275 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent );
276 wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent );
277 wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent );
278 wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent );
279 wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent );
280 wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent );
281 wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent );
282 wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent );
283 wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent );
284 wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent );
285 wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent );
286 wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent );
287 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent );
288 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent );
289 wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent );
290 wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent );
291 wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent );
292 wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent );
293 wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent );
294
295 // Clipboard events
296 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent );
297 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent );
298 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent );
299
300 // Generic command events
301 // Note: a click is a higher-level event than button down/up
302 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent );
303 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent );
304 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent );
305 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent );
306 wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent );
307 wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent );
308 wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
309
310 // Help events
311 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
312 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
313
314 // Thread event
315 wxDEFINE_EVENT( wxEVT_COMMAND_THREAD, wxThreadEvent );
316
317 #endif // wxUSE_GUI
318
319 #if wxUSE_BASE
320
321 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
322
323 // ============================================================================
324 // implementation
325 // ============================================================================
326
327 // ----------------------------------------------------------------------------
328 // event initialization
329 // ----------------------------------------------------------------------------
330
331 int wxNewEventType()
332 {
333 // MT-FIXME
334 static int s_lastUsedEventType = wxEVT_FIRST;
335
336 return s_lastUsedEventType++;
337 }
338 // ----------------------------------------------------------------------------
339 // wxEventFunctor
340 // ----------------------------------------------------------------------------
341
342 wxEventFunctor::~wxEventFunctor()
343 {
344 }
345
346 // ----------------------------------------------------------------------------
347 // wxEvent
348 // ----------------------------------------------------------------------------
349
350 /*
351 * General wxWidgets events, covering all interesting things that might happen
352 * (button clicking, resizing, setting text in widgets, etc.).
353 *
354 * For each completely new event type, derive a new event class.
355 *
356 */
357
358 wxEvent::wxEvent(int theId, wxEventType commandType)
359 {
360 m_eventType = commandType;
361 m_eventObject = NULL;
362 m_timeStamp = 0;
363 m_id = theId;
364 m_skipped = false;
365 m_callbackUserData = NULL;
366 m_isCommandEvent = false;
367 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
368 m_wasProcessed = false;
369 }
370
371 wxEvent::wxEvent(const wxEvent& src)
372 : wxObject(src)
373 , m_eventObject(src.m_eventObject)
374 , m_eventType(src.m_eventType)
375 , m_timeStamp(src.m_timeStamp)
376 , m_id(src.m_id)
377 , m_callbackUserData(src.m_callbackUserData)
378 , m_propagationLevel(src.m_propagationLevel)
379 , m_skipped(src.m_skipped)
380 , m_isCommandEvent(src.m_isCommandEvent)
381 , m_wasProcessed(false)
382 {
383 }
384
385 wxEvent& wxEvent::operator=(const wxEvent& src)
386 {
387 wxObject::operator=(src);
388
389 m_eventObject = src.m_eventObject;
390 m_eventType = src.m_eventType;
391 m_timeStamp = src.m_timeStamp;
392 m_id = src.m_id;
393 m_callbackUserData = src.m_callbackUserData;
394 m_propagationLevel = src.m_propagationLevel;
395 m_skipped = src.m_skipped;
396 m_isCommandEvent = src.m_isCommandEvent;
397
398 // don't change m_wasProcessed
399
400 return *this;
401 }
402
403 #endif // wxUSE_BASE
404
405 #if wxUSE_GUI
406
407 // ----------------------------------------------------------------------------
408 // wxCommandEvent
409 // ----------------------------------------------------------------------------
410
411 #ifdef __VISUALC__
412 // 'this' : used in base member initializer list (for m_commandString)
413 #pragma warning(disable:4355)
414 #endif
415
416 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
417 : wxEvent(theId, commandType)
418 {
419 m_clientData = NULL;
420 m_clientObject = NULL;
421 m_extraLong = 0;
422 m_commandInt = 0;
423 m_isCommandEvent = true;
424
425 // the command events are propagated upwards by default
426 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
427 }
428
429 #ifdef __VISUALC__
430 #pragma warning(default:4355)
431 #endif
432
433 wxString wxCommandEvent::GetString() const
434 {
435 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
436 {
437 return m_cmdString;
438 }
439 else
440 {
441 #if wxUSE_TEXTCTRL
442 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
443 if ( txt )
444 return txt->GetValue();
445 else
446 #endif // wxUSE_TEXTCTRL
447 return m_cmdString;
448 }
449 }
450
451 // ----------------------------------------------------------------------------
452 // wxUpdateUIEvent
453 // ----------------------------------------------------------------------------
454
455 #if wxUSE_LONGLONG
456 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
457 #endif
458
459 long wxUpdateUIEvent::sm_updateInterval = 0;
460
461 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
462
463 // Can we update?
464 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
465 {
466 // Don't update if we've switched global updating off
467 // and this window doesn't support updates.
468 if (win &&
469 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
470 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
471 return false;
472
473 if (sm_updateInterval == -1)
474 return false;
475
476 if (sm_updateInterval == 0)
477 return true;
478
479 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
480 wxLongLong now = wxGetLocalTimeMillis();
481 if (now > (sm_lastUpdate + sm_updateInterval))
482 {
483 return true;
484 }
485
486 return false;
487 #else
488 // If we don't have wxStopWatch or wxLongLong, we
489 // should err on the safe side and update now anyway.
490 return true;
491 #endif
492 }
493
494 // Reset the update time to provide a delay until the next
495 // time we should update
496 void wxUpdateUIEvent::ResetUpdateTime()
497 {
498 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
499 if (sm_updateInterval > 0)
500 {
501 wxLongLong now = wxGetLocalTimeMillis();
502 if (now > (sm_lastUpdate + sm_updateInterval))
503 {
504 sm_lastUpdate = now;
505 }
506 }
507 #endif
508 }
509
510 // ----------------------------------------------------------------------------
511 // wxScrollEvent
512 // ----------------------------------------------------------------------------
513
514 wxScrollEvent::wxScrollEvent(wxEventType commandType,
515 int id,
516 int pos,
517 int orient)
518 : wxCommandEvent(commandType, id)
519 {
520 m_extraLong = orient;
521 m_commandInt = pos;
522 }
523
524 // ----------------------------------------------------------------------------
525 // wxScrollWinEvent
526 // ----------------------------------------------------------------------------
527
528 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
529 int pos,
530 int orient)
531 {
532 m_eventType = commandType;
533 m_extraLong = orient;
534 m_commandInt = pos;
535 }
536
537 // ----------------------------------------------------------------------------
538 // wxMouseEvent
539 // ----------------------------------------------------------------------------
540
541 wxMouseEvent::wxMouseEvent(wxEventType commandType)
542 {
543 m_eventType = commandType;
544
545 m_x = 0;
546 m_y = 0;
547
548 m_leftDown = false;
549 m_middleDown = false;
550 m_rightDown = false;
551 m_aux1Down = false;
552 m_aux2Down = false;
553
554 m_clickCount = -1;
555
556 m_wheelRotation = 0;
557 m_wheelDelta = 0;
558 m_linesPerAction = 0;
559 m_wheelAxis = 0;
560 }
561
562 void wxMouseEvent::Assign(const wxMouseEvent& event)
563 {
564 wxEvent::operator=(event);
565
566 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
567 // defined operator=() so need to do it this way:
568 *static_cast<wxMouseState *>(this) = event;
569
570 m_x = event.m_x;
571 m_y = event.m_y;
572
573 m_leftDown = event.m_leftDown;
574 m_middleDown = event.m_middleDown;
575 m_rightDown = event.m_rightDown;
576 m_aux1Down = event.m_aux1Down;
577 m_aux2Down = event.m_aux2Down;
578
579 m_wheelRotation = event.m_wheelRotation;
580 m_wheelDelta = event.m_wheelDelta;
581 m_linesPerAction = event.m_linesPerAction;
582 m_wheelAxis = event.m_wheelAxis;
583 }
584
585 // return true if was a button dclick event
586 bool wxMouseEvent::ButtonDClick(int but) const
587 {
588 switch (but)
589 {
590 default:
591 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
592 // fall through
593
594 case wxMOUSE_BTN_ANY:
595 return (LeftDClick() || MiddleDClick() || RightDClick() ||
596 Aux1DClick() || Aux2DClick());
597
598 case wxMOUSE_BTN_LEFT:
599 return LeftDClick();
600
601 case wxMOUSE_BTN_MIDDLE:
602 return MiddleDClick();
603
604 case wxMOUSE_BTN_RIGHT:
605 return RightDClick();
606
607 case wxMOUSE_BTN_AUX1:
608 return Aux1DClick();
609
610 case wxMOUSE_BTN_AUX2:
611 return Aux2DClick();
612 }
613 }
614
615 // return true if was a button down event
616 bool wxMouseEvent::ButtonDown(int but) const
617 {
618 switch (but)
619 {
620 default:
621 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
622 // fall through
623
624 case wxMOUSE_BTN_ANY:
625 return (LeftDown() || MiddleDown() || RightDown() ||
626 Aux1Down() || Aux2Down());
627
628 case wxMOUSE_BTN_LEFT:
629 return LeftDown();
630
631 case wxMOUSE_BTN_MIDDLE:
632 return MiddleDown();
633
634 case wxMOUSE_BTN_RIGHT:
635 return RightDown();
636
637 case wxMOUSE_BTN_AUX1:
638 return Aux1Down();
639
640 case wxMOUSE_BTN_AUX2:
641 return Aux2Down();
642 }
643 }
644
645 // return true if was a button up event
646 bool wxMouseEvent::ButtonUp(int but) const
647 {
648 switch (but)
649 {
650 default:
651 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
652 // fall through
653
654 case wxMOUSE_BTN_ANY:
655 return (LeftUp() || MiddleUp() || RightUp() ||
656 Aux1Up() || Aux2Up());
657
658 case wxMOUSE_BTN_LEFT:
659 return LeftUp();
660
661 case wxMOUSE_BTN_MIDDLE:
662 return MiddleUp();
663
664 case wxMOUSE_BTN_RIGHT:
665 return RightUp();
666
667 case wxMOUSE_BTN_AUX1:
668 return Aux1Up();
669
670 case wxMOUSE_BTN_AUX2:
671 return Aux2Up();
672 }
673 }
674
675 // return true if the given button is currently changing state
676 bool wxMouseEvent::Button(int but) const
677 {
678 switch (but)
679 {
680 default:
681 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
682 // fall through
683
684 case wxMOUSE_BTN_ANY:
685 return ButtonUp(wxMOUSE_BTN_ANY) ||
686 ButtonDown(wxMOUSE_BTN_ANY) ||
687 ButtonDClick(wxMOUSE_BTN_ANY);
688
689 case wxMOUSE_BTN_LEFT:
690 return LeftDown() || LeftUp() || LeftDClick();
691
692 case wxMOUSE_BTN_MIDDLE:
693 return MiddleDown() || MiddleUp() || MiddleDClick();
694
695 case wxMOUSE_BTN_RIGHT:
696 return RightDown() || RightUp() || RightDClick();
697
698 case wxMOUSE_BTN_AUX1:
699 return Aux1Down() || Aux1Up() || Aux1DClick();
700
701 case wxMOUSE_BTN_AUX2:
702 return Aux2Down() || Aux2Up() || Aux2DClick();
703 }
704 }
705
706 int wxMouseEvent::GetButton() const
707 {
708 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
709 {
710 if ( Button(i) )
711 {
712 return i;
713 }
714 }
715
716 return wxMOUSE_BTN_NONE;
717 }
718
719 // Find the logical position of the event given the DC
720 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
721 {
722 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
723 return pt;
724 }
725
726 // ----------------------------------------------------------------------------
727 // wxKeyEvent
728 // ----------------------------------------------------------------------------
729
730 wxKeyEvent::wxKeyEvent(wxEventType type)
731 {
732 m_eventType = type;
733 m_keyCode = 0;
734 #if wxUSE_UNICODE
735 m_uniChar = 0;
736 #endif
737 }
738
739 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
740 : wxEvent(evt),
741 wxKeyboardState(evt)
742 {
743 m_x = evt.m_x;
744 m_y = evt.m_y;
745
746 m_keyCode = evt.m_keyCode;
747 m_rawCode = evt.m_rawCode;
748 m_rawFlags = evt.m_rawFlags;
749
750 #if wxUSE_UNICODE
751 m_uniChar = evt.m_uniChar;
752 #endif
753 }
754
755 bool wxKeyEvent::IsKeyInCategory(int category) const
756 {
757 switch ( GetKeyCode() )
758 {
759 case WXK_LEFT:
760 case WXK_RIGHT:
761 case WXK_UP:
762 case WXK_DOWN:
763 case WXK_NUMPAD_LEFT:
764 case WXK_NUMPAD_RIGHT:
765 case WXK_NUMPAD_UP:
766 case WXK_NUMPAD_DOWN:
767 return (category & WXK_CATEGORY_ARROW) != 0;
768
769 case WXK_PAGEDOWN:
770 case WXK_END:
771 case WXK_NUMPAD_PAGEUP:
772 case WXK_NUMPAD_PAGEDOWN:
773 return (category & WXK_CATEGORY_PAGING) != 0;
774
775 case WXK_HOME:
776 case WXK_PAGEUP:
777 case WXK_NUMPAD_HOME:
778 case WXK_NUMPAD_END:
779 return (category & WXK_CATEGORY_JUMP) != 0;
780
781 case WXK_TAB:
782 case WXK_NUMPAD_TAB:
783 return (category & WXK_CATEGORY_TAB) != 0;
784
785 case WXK_BACK:
786 case WXK_DELETE:
787 case WXK_NUMPAD_DELETE:
788 return (category & WXK_CATEGORY_CUT) != 0;
789
790 default:
791 return false;
792 }
793 }
794
795 // ----------------------------------------------------------------------------
796 // wxWindowCreateEvent
797 // ----------------------------------------------------------------------------
798
799 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
800 {
801 SetEventType(wxEVT_CREATE);
802 SetEventObject(win);
803 }
804
805 // ----------------------------------------------------------------------------
806 // wxWindowDestroyEvent
807 // ----------------------------------------------------------------------------
808
809 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
810 {
811 SetEventType(wxEVT_DESTROY);
812 SetEventObject(win);
813 }
814
815 // ----------------------------------------------------------------------------
816 // wxChildFocusEvent
817 // ----------------------------------------------------------------------------
818
819 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
820 : wxCommandEvent(wxEVT_CHILD_FOCUS)
821 {
822 SetEventObject(win);
823 }
824
825 // ----------------------------------------------------------------------------
826 // wxHelpEvent
827 // ----------------------------------------------------------------------------
828
829 /* static */
830 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
831 {
832 if ( origin == Origin_Unknown )
833 {
834 // assume that the event comes from the help button if it's not from
835 // keyboard and that pressing F1 always results in the help event
836 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
837 }
838
839 return origin;
840 }
841
842 #endif // wxUSE_GUI
843
844
845 #if wxUSE_BASE
846
847 // ----------------------------------------------------------------------------
848 // wxEventHashTable
849 // ----------------------------------------------------------------------------
850
851 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
852
853 wxEventHashTable* wxEventHashTable::sm_first = NULL;
854
855 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
856 : m_table(table),
857 m_rebuildHash(true)
858 {
859 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
860
861 m_next = sm_first;
862 if (m_next)
863 m_next->m_previous = this;
864 sm_first = this;
865 }
866
867 wxEventHashTable::~wxEventHashTable()
868 {
869 if (m_next)
870 m_next->m_previous = m_previous;
871 if (m_previous)
872 m_previous->m_next = m_next;
873 if (sm_first == this)
874 sm_first = m_next;
875
876 Clear();
877 }
878
879 void wxEventHashTable::Clear()
880 {
881 for ( size_t i = 0; i < m_size; i++ )
882 {
883 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
884 delete eTTnode;
885 }
886
887 delete[] m_eventTypeTable;
888 m_eventTypeTable = NULL;
889
890 m_size = 0;
891 }
892
893 #if wxUSE_MEMORY_TRACING
894
895 // Clear all tables
896 void wxEventHashTable::ClearAll()
897 {
898 wxEventHashTable* table = sm_first;
899 while (table)
900 {
901 table->Clear();
902 table = table->m_next;
903 }
904 }
905
906 #endif // wxUSE_MEMORY_TRACING
907
908 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
909 {
910 if (m_rebuildHash)
911 {
912 InitHashTable();
913 m_rebuildHash = false;
914 }
915
916 if (!m_eventTypeTable)
917 return false;
918
919 // Find all entries for the given event type.
920 wxEventType eventType = event.GetEventType();
921 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
922 if (eTTnode && eTTnode->eventType == eventType)
923 {
924 // Now start the search for an event handler
925 // that can handle an event with the given ID.
926 const wxEventTableEntryPointerArray&
927 eventEntryTable = eTTnode->eventEntryTable;
928
929 const size_t count = eventEntryTable.GetCount();
930 for (size_t n = 0; n < count; n++)
931 {
932 const wxEventTableEntry& entry = *eventEntryTable[n];
933 if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
934 return true;
935 }
936 }
937
938 return false;
939 }
940
941 void wxEventHashTable::InitHashTable()
942 {
943 // Loop over the event tables and all its base tables.
944 const wxEventTable *table = &m_table;
945 while (table)
946 {
947 // Retrieve all valid event handler entries
948 const wxEventTableEntry *entry = table->entries;
949 while (entry->m_fn != 0)
950 {
951 // Add the event entry in the Hash.
952 AddEntry(*entry);
953
954 entry++;
955 }
956
957 table = table->baseTable;
958 }
959
960 // Lets free some memory.
961 size_t i;
962 for(i = 0; i < m_size; i++)
963 {
964 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
965 if (eTTnode)
966 {
967 eTTnode->eventEntryTable.Shrink();
968 }
969 }
970 }
971
972 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
973 {
974 // This might happen 'accidentally' as the app is exiting
975 if (!m_eventTypeTable)
976 return;
977
978 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
979 EventTypeTablePointer eTTnode = *peTTnode;
980
981 if (eTTnode)
982 {
983 if (eTTnode->eventType != entry.m_eventType)
984 {
985 // Resize the table!
986 GrowEventTypeTable();
987 // Try again to add it.
988 AddEntry(entry);
989 return;
990 }
991 }
992 else
993 {
994 eTTnode = new EventTypeTable;
995 eTTnode->eventType = entry.m_eventType;
996 *peTTnode = eTTnode;
997 }
998
999 // Fill all hash entries between entry.m_id and entry.m_lastId...
1000 eTTnode->eventEntryTable.Add(&entry);
1001 }
1002
1003 void wxEventHashTable::AllocEventTypeTable(size_t size)
1004 {
1005 m_eventTypeTable = new EventTypeTablePointer[size];
1006 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
1007 m_size = size;
1008 }
1009
1010 void wxEventHashTable::GrowEventTypeTable()
1011 {
1012 size_t oldSize = m_size;
1013 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
1014
1015 // TODO: Search the most optimal grow sequence
1016 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
1017
1018 for ( size_t i = 0; i < oldSize; /* */ )
1019 {
1020 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1021 if (eTToldNode)
1022 {
1023 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1024 EventTypeTablePointer eTTnode = *peTTnode;
1025
1026 // Check for collision, we don't want any.
1027 if (eTTnode)
1028 {
1029 GrowEventTypeTable();
1030 continue; // Don't increment the counter,
1031 // as we still need to add this element.
1032 }
1033 else
1034 {
1035 // Get the old value and put it in the new table.
1036 *peTTnode = oldEventTypeTable[i];
1037 }
1038 }
1039
1040 i++;
1041 }
1042
1043 delete[] oldEventTypeTable;
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // wxEvtHandler
1048 // ----------------------------------------------------------------------------
1049
1050 wxEvtHandler::wxEvtHandler()
1051 {
1052 m_nextHandler = NULL;
1053 m_previousHandler = NULL;
1054 m_enabled = true;
1055 m_dynamicEvents = NULL;
1056 m_pendingEvents = NULL;
1057
1058 // no client data (yet)
1059 m_clientData = NULL;
1060 m_clientDataType = wxClientData_None;
1061 }
1062
1063 wxEvtHandler::~wxEvtHandler()
1064 {
1065 Unlink();
1066
1067 if (m_dynamicEvents)
1068 {
1069 for ( wxList::iterator it = m_dynamicEvents->begin(),
1070 end = m_dynamicEvents->end();
1071 it != end;
1072 ++it )
1073 {
1074 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1075
1076 // Remove ourselves from sink destructor notifications
1077 // (this has usually been done, in wxTrackable destructor)
1078 wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
1079 if ( eventSink )
1080 {
1081 wxEventConnectionRef * const
1082 evtConnRef = FindRefInTrackerList(eventSink);
1083 if ( evtConnRef )
1084 {
1085 eventSink->RemoveNode(evtConnRef);
1086 delete evtConnRef;
1087 }
1088 }
1089
1090 delete entry->m_callbackUserData;
1091 delete entry;
1092 }
1093 delete m_dynamicEvents;
1094 }
1095
1096 // Remove us from the list of the pending events if necessary.
1097 if (wxTheApp)
1098 wxTheApp->RemovePendingEventHandler(this);
1099
1100 DeletePendingEvents();
1101
1102 // we only delete object data, not untyped
1103 if ( m_clientDataType == wxClientData_Object )
1104 delete m_clientObject;
1105 }
1106
1107 void wxEvtHandler::Unlink()
1108 {
1109 // this event handler must take itself out of the chain of handlers:
1110
1111 if (m_previousHandler)
1112 m_previousHandler->SetNextHandler(m_nextHandler);
1113
1114 if (m_nextHandler)
1115 m_nextHandler->SetPreviousHandler(m_previousHandler);
1116
1117 m_nextHandler = NULL;
1118 m_previousHandler = NULL;
1119 }
1120
1121 bool wxEvtHandler::IsUnlinked() const
1122 {
1123 return m_previousHandler == NULL &&
1124 m_nextHandler == NULL;
1125 }
1126
1127 #if wxUSE_THREADS
1128
1129 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1130 {
1131 // check that we are really in a child thread
1132 wxASSERT_MSG( !wxThread::IsMain(),
1133 wxT("use ProcessEvent() in main thread") );
1134
1135 AddPendingEvent(event);
1136
1137 return true;
1138 }
1139
1140 #endif // wxUSE_THREADS
1141
1142 void wxEvtHandler::QueueEvent(wxEvent *event)
1143 {
1144 wxCHECK_RET( event, "NULL event can't be posted" );
1145
1146 if (!wxTheApp)
1147 {
1148 // we need an event loop which manages the list of event handlers with
1149 // pending events... cannot proceed without it!
1150 wxLogDebug("No application object! Cannot queue this event!");
1151
1152 // anyway delete the given event to avoid memory leaks
1153 delete event;
1154
1155 return;
1156 }
1157
1158 // 1) Add this event to our list of pending events
1159 wxENTER_CRIT_SECT( m_pendingEventsLock );
1160
1161 if ( !m_pendingEvents )
1162 m_pendingEvents = new wxList;
1163
1164 m_pendingEvents->Append(event);
1165
1166 // 2) Add this event handler to list of event handlers that
1167 // have pending events.
1168
1169 wxTheApp->AppendPendingEventHandler(this);
1170
1171 // only release m_pendingEventsLock now because otherwise there is a race
1172 // condition as described in the ticket #9093: we could process the event
1173 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1174 // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1175 // breaking the invariant that a handler should be in the list iff it has
1176 // any pending events to process
1177 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1178
1179 // 3) Inform the system that new pending events are somewhere,
1180 // and that these should be processed in idle time.
1181 wxWakeUpIdle();
1182 }
1183
1184 void wxEvtHandler::DeletePendingEvents()
1185 {
1186 if (m_pendingEvents)
1187 m_pendingEvents->DeleteContents(true);
1188 wxDELETE(m_pendingEvents);
1189 }
1190
1191 void wxEvtHandler::ProcessPendingEvents()
1192 {
1193 if (!wxTheApp)
1194 {
1195 // we need an event loop which manages the list of event handlers with
1196 // pending events... cannot proceed without it!
1197 wxLogDebug("No application object! Cannot process pending events!");
1198 return;
1199 }
1200
1201 // we need to process only a single pending event in this call because
1202 // each call to ProcessEvent() could result in the destruction of this
1203 // same event handler (see the comment at the end of this function)
1204
1205 wxENTER_CRIT_SECT( m_pendingEventsLock );
1206
1207 // this method is only called by wxApp if this handler does have
1208 // pending events
1209 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1210 "should have pending events if called" );
1211
1212 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1213 wxEvent* pEvent = static_cast<wxEvent *>(node->GetData());
1214
1215 // find the first event which can be processed now:
1216 wxEventLoopBase* evtLoop = wxEventLoopBase::GetActive();
1217 if (evtLoop && evtLoop->IsYielding())
1218 {
1219 while (node && pEvent && !evtLoop->IsEventAllowedInsideYield(pEvent->GetEventCategory()))
1220 {
1221 node = node->GetNext();
1222 pEvent = node ? static_cast<wxEvent *>(node->GetData()) : NULL;
1223 }
1224
1225 if (!node)
1226 {
1227 // all our events are NOT processable now... signal this:
1228 wxTheApp->DelayPendingEventHandler(this);
1229
1230 // see the comment at the beginning of evtloop.h header for the
1231 // logic behind YieldFor() and behind DelayPendingEventHandler()
1232
1233 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1234
1235 return;
1236 }
1237 }
1238
1239 wxEventPtr event(pEvent);
1240
1241 // it's important we remove event from list before processing it, else a
1242 // nested event loop, for example from a modal dialog, might process the
1243 // same event again.
1244 m_pendingEvents->Erase(node);
1245
1246 if ( m_pendingEvents->IsEmpty() )
1247 {
1248 // if there are no more pending events left, we don't need to
1249 // stay in this list
1250 wxTheApp->RemovePendingEventHandler(this);
1251 }
1252
1253 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1254
1255 ProcessEvent(*event);
1256
1257 // careful: this object could have been deleted by the event handler
1258 // executed by the above ProcessEvent() call, so we can't access any fields
1259 // of this object any more
1260 }
1261
1262 /* static */
1263 bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1264 wxEvtHandler *handler,
1265 wxEvent& event)
1266 {
1267 int tableId1 = entry.m_id,
1268 tableId2 = entry.m_lastId;
1269
1270 // match only if the event type is the same and the id is either -1 in
1271 // the event table (meaning "any") or the event id matches the id
1272 // specified in the event table either exactly or by falling into
1273 // range between first and last
1274 if ((tableId1 == wxID_ANY) ||
1275 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1276 (tableId2 != wxID_ANY &&
1277 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1278 {
1279 event.Skip(false);
1280 event.m_callbackUserData = entry.m_callbackUserData;
1281
1282 #if wxUSE_EXCEPTIONS
1283 if ( wxTheApp )
1284 {
1285 // call the handler via wxApp method which allows the user to catch
1286 // any exceptions which may be thrown by any handler in the program
1287 // in one place
1288 wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1289 }
1290 else
1291 #endif // wxUSE_EXCEPTIONS
1292 {
1293 (*entry.m_fn)(handler, event);
1294 }
1295
1296 if (!event.GetSkipped())
1297 return true;
1298 }
1299
1300 return false;
1301 }
1302
1303 bool wxEvtHandler::DoTryApp(wxEvent& event)
1304 {
1305 if ( wxTheApp && (this != wxTheApp) )
1306 {
1307 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1308 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1309 // processed appropriately via SearchEventTable.
1310 if ( event.GetEventType() != wxEVT_IDLE )
1311 {
1312 if ( wxTheApp->ProcessEvent(event) )
1313 return true;
1314 }
1315 }
1316
1317 return false;
1318 }
1319
1320 bool wxEvtHandler::TryBefore(wxEvent& event)
1321 {
1322 #if WXWIN_COMPATIBILITY_2_8
1323 // call the old virtual function to keep the code overriding it working
1324 return TryValidator(event);
1325 #else
1326 wxUnusedVar(event);
1327 return false;
1328 #endif
1329 }
1330
1331 bool wxEvtHandler::TryAfter(wxEvent& event)
1332 {
1333 #if WXWIN_COMPATIBILITY_2_8
1334 // as above, call the old virtual function for compatibility
1335 return TryParent(event);
1336 #else
1337 return DoTryApp(event);
1338 #endif
1339 }
1340
1341 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1342 {
1343 // allow the application to hook into event processing
1344 //
1345 // note that we should only do it if we're the first event handler called
1346 // to avoid calling FilterEvent() multiple times as the event goes through
1347 // the event handler chain and possibly upwards the window hierarchy
1348 if ( !event.WasProcessed() )
1349 {
1350 if ( wxTheApp )
1351 {
1352 int rc = wxTheApp->FilterEvent(event);
1353 if ( rc != -1 )
1354 {
1355 wxASSERT_MSG( rc == 1 || rc == 0,
1356 "unexpected wxApp::FilterEvent return value" );
1357
1358 return rc != 0;
1359 }
1360 //else: proceed normally
1361 }
1362 }
1363
1364 // Try the hooks which should be called before our own handlers
1365 if ( TryBefore(event) )
1366 return true;
1367
1368 if ( ProcessEventHere(event) )
1369 return true;
1370
1371 // pass the event to the next handler, notice that we shouldn't call
1372 // TryAfter() even if it doesn't handle the event as the last handler in
1373 // the chain will do it
1374 if ( GetNextHandler() )
1375 return GetNextHandler()->ProcessEvent(event);
1376
1377 // propagate the event upwards the window chain and/or to the application
1378 // object if it wasn't processed at this level
1379 return TryAfter(event);
1380 }
1381
1382 bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1383 {
1384 // If the event handler is disabled it doesn't process any events
1385 if ( !GetEvtHandlerEnabled() )
1386 return false;
1387
1388 // Handle per-instance dynamic event tables first
1389 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1390 return true;
1391
1392 // Then static per-class event tables
1393 if ( GetEventHashTable().HandleEvent(event, this) )
1394 return true;
1395
1396 // We don't have a handler for this event.
1397 return false;
1398 }
1399
1400 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1401 {
1402 #if wxUSE_EXCEPTIONS
1403 try
1404 {
1405 #endif
1406 return ProcessEvent(event);
1407 #if wxUSE_EXCEPTIONS
1408 }
1409 catch ( ... )
1410 {
1411 // notice that we do it in 2 steps to avoid warnings about possibly
1412 // uninitialized loop variable from some versions of g++ which are not
1413 // smart enough to figure out that GetActive() doesn't throw and so
1414 // that loop will always be initialized
1415 wxEventLoopBase *loop = NULL;
1416 try
1417 {
1418 loop = wxEventLoopBase::GetActive();
1419
1420 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1421 {
1422 if ( loop )
1423 loop->Exit();
1424 }
1425 //else: continue running current event loop
1426
1427 return false;
1428 }
1429 catch ( ... )
1430 {
1431 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1432 // exception again: very good, but we still need Exit() to
1433 // be called
1434 if ( loop )
1435 loop->Exit();
1436 throw;
1437 }
1438 }
1439 #endif // wxUSE_EXCEPTIONS
1440 }
1441
1442 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1443 {
1444 const wxEventType eventType = event.GetEventType();
1445 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1446 {
1447 const wxEventTableEntry& entry = table.entries[i];
1448 if ( eventType == entry.m_eventType )
1449 {
1450 if ( ProcessEventIfMatchesId(entry, this, event) )
1451 return true;
1452 }
1453 }
1454
1455 return false;
1456 }
1457
1458 void wxEvtHandler::DoBind(int id,
1459 int lastId,
1460 wxEventType eventType,
1461 wxEventFunctor *func,
1462 wxObject *userData)
1463 {
1464 wxDynamicEventTableEntry *entry =
1465 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1466
1467 if (!m_dynamicEvents)
1468 m_dynamicEvents = new wxList;
1469
1470 // Insert at the front of the list so most recent additions are found first
1471 m_dynamicEvents->Insert( (wxObject*) entry );
1472
1473 // Make sure we get to know when a sink is destroyed
1474 wxEvtHandler *eventSink = func->GetEvtHandler();
1475 if ( eventSink && eventSink != this )
1476 {
1477 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1478 if ( evtConnRef )
1479 evtConnRef->IncRef( );
1480 else
1481 new wxEventConnectionRef(this, eventSink);
1482 }
1483 }
1484
1485 bool
1486 wxEvtHandler::DoUnbind(int id,
1487 int lastId,
1488 wxEventType eventType,
1489 const wxEventFunctor& func,
1490 wxObject *userData)
1491 {
1492 if (!m_dynamicEvents)
1493 return false;
1494
1495 // Remove connection from tracker node (wxEventConnectionRef)
1496 wxEvtHandler *eventSink = func.GetEvtHandler();
1497 if ( eventSink && eventSink != this )
1498 {
1499 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1500 if ( evtConnRef )
1501 evtConnRef->DecRef();
1502 }
1503
1504 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1505 while (node)
1506 {
1507 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1508
1509 if ((entry->m_id == id) &&
1510 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1511 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1512 entry->m_fn->IsMatching(func) &&
1513 ((entry->m_callbackUserData == userData) || !userData))
1514 {
1515 delete entry->m_callbackUserData;
1516 m_dynamicEvents->Erase( node );
1517 delete entry;
1518 return true;
1519 }
1520 node = node->GetNext();
1521 }
1522 return false;
1523 }
1524
1525 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1526 {
1527 wxCHECK_MSG( m_dynamicEvents, false,
1528 wxT("caller should check that we have dynamic events") );
1529
1530 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1531 while (node)
1532 {
1533 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1534
1535 // get next node before (maybe) calling the event handler as it could
1536 // call Disconnect() invalidating the current node
1537 node = node->GetNext();
1538
1539 if ( event.GetEventType() == entry->m_eventType )
1540 {
1541 wxEvtHandler *handler = entry->m_fn->GetEvtHandler();
1542 if ( !handler )
1543 handler = this;
1544 if ( ProcessEventIfMatchesId(*entry, handler, event) )
1545 return true;
1546 }
1547 }
1548
1549 return false;
1550 }
1551
1552 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1553 {
1554 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1555 wxT("can't have both object and void client data") );
1556
1557 if ( m_clientObject )
1558 delete m_clientObject;
1559
1560 m_clientObject = data;
1561 m_clientDataType = wxClientData_Object;
1562 }
1563
1564 wxClientData *wxEvtHandler::DoGetClientObject() const
1565 {
1566 // it's not an error to call GetClientObject() on a window which doesn't
1567 // have client data at all - NULL will be returned
1568 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1569 wxT("this window doesn't have object client data") );
1570
1571 return m_clientObject;
1572 }
1573
1574 void wxEvtHandler::DoSetClientData( void *data )
1575 {
1576 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1577 wxT("can't have both object and void client data") );
1578
1579 m_clientData = data;
1580 m_clientDataType = wxClientData_Void;
1581 }
1582
1583 void *wxEvtHandler::DoGetClientData() const
1584 {
1585 // it's not an error to call GetClientData() on a window which doesn't have
1586 // client data at all - NULL will be returned
1587 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1588 wxT("this window doesn't have void client data") );
1589
1590 return m_clientData;
1591 }
1592
1593 // A helper to find an wxEventConnectionRef object
1594 wxEventConnectionRef *
1595 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1596 {
1597 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1598 {
1599 // we only want wxEventConnectionRef nodes here
1600 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1601 if ( evtConnRef && evtConnRef->m_src == this )
1602 {
1603 wxASSERT( evtConnRef->m_sink==eventSink );
1604 return evtConnRef;
1605 }
1606 }
1607
1608 return NULL;
1609 }
1610
1611 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1612 {
1613 wxASSERT(m_dynamicEvents);
1614
1615 // remove all connections with this sink
1616 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1617 while (node)
1618 {
1619 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1620 node_nxt = node->GetNext();
1621
1622 if ( entry->m_fn->GetEvtHandler() == sink )
1623 {
1624 delete entry->m_callbackUserData;
1625 m_dynamicEvents->Erase( node );
1626 delete entry;
1627 }
1628 node = node_nxt;
1629 }
1630 }
1631
1632 #endif // wxUSE_BASE
1633
1634 #if wxUSE_GUI
1635
1636 // Find a window with the focus, that is also a descendant of the given window.
1637 // This is used to determine the window to initially send commands to.
1638 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1639 {
1640 // Process events starting with the window with the focus, if any.
1641 wxWindow* focusWin = wxWindow::FindFocus();
1642 wxWindow* win = focusWin;
1643
1644 // Check if this is a descendant of this frame.
1645 // If not, win will be set to NULL.
1646 while (win)
1647 {
1648 if (win == ancestor)
1649 break;
1650 else
1651 win = win->GetParent();
1652 }
1653 if (win == NULL)
1654 focusWin = NULL;
1655
1656 return focusWin;
1657 }
1658
1659 // ----------------------------------------------------------------------------
1660 // wxEventBlocker
1661 // ----------------------------------------------------------------------------
1662
1663 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1664 {
1665 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1666
1667 m_window = win;
1668
1669 Block(type);
1670 m_window->PushEventHandler(this);
1671 }
1672
1673 wxEventBlocker::~wxEventBlocker()
1674 {
1675 wxEvtHandler *popped = m_window->PopEventHandler(false);
1676 wxCHECK_RET(popped == this,
1677 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1678 }
1679
1680 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1681 {
1682 // should this event be blocked?
1683 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1684 {
1685 wxEventType t = (wxEventType)m_eventsToBlock[i];
1686 if ( t == wxEVT_ANY || t == event.GetEventType() )
1687 return true; // yes, it should: mark this event as processed
1688 }
1689
1690 return false;
1691 }
1692
1693 #endif // wxUSE_GUI
1694
wxWidgets (Impactor)