src/common/event.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "event.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/defs.h"
  33     #include "wx/app.h"
  34     #include "wx/list.h"
  35
  36     #if wxUSE_GUI
  37         #include "wx/control.h"
  38         #include "wx/utils.h"
  39         #include "wx/dc.h"
  40     #endif // wxUSE_GUI
  41 #endif
  42
  43 #include "wx/event.h"
  44
  45 #if wxUSE_GUI
  46     #include "wx/validate.h"
  47 #endif // wxUSE_GUI
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWin macros
  51 // ----------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  54 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  55 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  56
  57 #if wxUSE_GUI
  58     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  59     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  60     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  61     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  62     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  63     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  64     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  65     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxCommandEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  85 #endif // wxUSE_GUI
  86
  87 const wxEventTable *wxEvtHandler::GetEventTable() const
  88     { return &wxEvtHandler::sm_eventTable; }
  89
  90 const wxEventTable wxEvtHandler::sm_eventTable =
  91     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
  92
  93 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
  94     { { 0, 0, 0, (wxObjectEventFunction) NULL, (wxObject*) NULL } };
  95
  96
  97 // ----------------------------------------------------------------------------
  98 // global variables
  99 // ----------------------------------------------------------------------------
 100
 101 // To put pending event handlers
 102 wxList *wxPendingEvents = (wxList *)NULL;
 103
 104 #if wxUSE_THREADS
 105     // protects wxPendingEvents list
 106     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 107 #endif
 108
 109 // ============================================================================
 110 // implementation
 111 // ============================================================================
 112
 113 // ----------------------------------------------------------------------------
 114 // wxEvent
 115 // ----------------------------------------------------------------------------
 116
 117 /*
 118  * General wxWindows events, covering
 119  * all interesting things that might happen (button clicking, resizing,
 120  * setting text in widgets, etc.).
 121  *
 122  * For each completely new event type, derive a new event class.
 123  *
 124  */
 125
 126 wxEvent::wxEvent(int theId)
 127 {
 128     m_eventType = wxEVT_NULL;
 129     m_eventObject = (wxObject *) NULL;
 130     m_timeStamp = 0;
 131     m_id = theId;
 132     m_skipped = FALSE;
 133     m_callbackUserData = (wxObject *) NULL;
 134     m_isCommandEvent = FALSE;
 135 }
 136
 137 void wxEvent::CopyObject(wxObject& object_dest) const
 138 {
 139     wxEvent *obj = (wxEvent *)&object_dest;
 140     wxObject::CopyObject(object_dest);
 141
 142     obj->m_eventType = m_eventType;
 143     obj->m_eventObject = m_eventObject;
 144     obj->m_timeStamp = m_timeStamp;
 145     obj->m_id = m_id;
 146     obj->m_skipped = m_skipped;
 147     obj->m_callbackUserData = m_callbackUserData;
 148     obj->m_isCommandEvent = m_isCommandEvent;
 149 }
 150
 151 #if wxUSE_GUI
 152
 153 /*
 154  * Command events
 155  *
 156  */
 157
 158 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 159 {
 160     m_eventType = commandType;
 161     m_clientData = (char *) NULL;
 162     m_clientObject = (wxClientData *) NULL;
 163     m_extraLong = 0;
 164     m_commandInt = 0;
 165     m_id = theId;
 166     m_commandString = wxEmptyString;
 167     m_isCommandEvent = TRUE;
 168 }
 169
 170 void wxCommandEvent::CopyObject(wxObject& obj_d) const
 171 {
 172     wxCommandEvent *obj = (wxCommandEvent *)&obj_d;
 173
 174     wxEvent::CopyObject(obj_d);
 175
 176     obj->m_clientData    = m_clientData;
 177     obj->m_clientObject  = m_clientObject;
 178     obj->m_extraLong     = m_extraLong;
 179     obj->m_commandInt    = m_commandInt;
 180     obj->m_commandString = m_commandString;
 181 }
 182
 183 /*
 184  * Notify events
 185  */
 186
 187 void wxNotifyEvent::CopyObject(wxObject& obj_d) const
 188 {
 189     wxNotifyEvent *obj = (wxNotifyEvent *)&obj_d;
 190
 191     wxEvent::CopyObject(obj_d);
 192
 193     if (!m_bAllow) obj->Veto();
 194 }
 195
 196 /*
 197  * Scroll events
 198  */
 199
 200 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 201                              int id,
 202                              int pos,
 203                              int orient)
 204              : wxCommandEvent(commandType, id)
 205 {
 206     m_extraLong = orient;
 207     m_commandInt = pos;
 208 }
 209
 210 /*
 211  * ScrollWin events
 212  */
 213
 214 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 215                                    int pos,
 216                                    int orient)
 217 {
 218     m_eventType = commandType;
 219     m_extraLong = orient;
 220     m_commandInt = pos;
 221 }
 222
 223 void wxScrollWinEvent::CopyObject(wxObject& obj_d) const
 224 {
 225     wxScrollWinEvent *obj = (wxScrollWinEvent*)&obj_d;
 226
 227     wxEvent::CopyObject(obj_d);
 228
 229     obj->m_extraLong    = m_extraLong;
 230     obj->m_commandInt   = m_commandInt;
 231 }
 232
 233 /*
 234  * Mouse events
 235  *
 236  */
 237
 238 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 239 {
 240     m_eventType = commandType;
 241     m_metaDown = FALSE;
 242     m_altDown = FALSE;
 243     m_controlDown = FALSE;
 244     m_shiftDown = FALSE;
 245     m_leftDown = FALSE;
 246     m_rightDown = FALSE;
 247     m_middleDown = FALSE;
 248     m_x = 0;
 249     m_y = 0;
 250 }
 251
 252 void wxMouseEvent::CopyObject(wxObject& obj_d) const
 253 {
 254     wxMouseEvent *obj = (wxMouseEvent *)&obj_d;
 255
 256     wxEvent::CopyObject(obj_d);
 257
 258     obj->m_metaDown = m_metaDown;
 259     obj->m_altDown = m_altDown;
 260     obj->m_controlDown = m_controlDown;
 261     obj->m_shiftDown = m_shiftDown;
 262     obj->m_leftDown = m_leftDown;
 263     obj->m_rightDown = m_rightDown;
 264     obj->m_middleDown = m_middleDown;
 265     obj->m_x = m_x;
 266     obj->m_y = m_y;
 267 }
 268
 269 // True if was a button dclick event (1 = left, 2 = middle, 3 = right)
 270 // or any button dclick event (but = -1)
 271 bool wxMouseEvent::ButtonDClick(int but) const
 272 {
 273     switch (but)
 274     {
 275         case -1:
 276             return (LeftDClick() || MiddleDClick() || RightDClick());
 277         case 1:
 278             return LeftDClick();
 279         case 2:
 280             return MiddleDClick();
 281         case 3:
 282             return RightDClick();
 283         default:
 284             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 285     }
 286
 287     return FALSE;
 288 }
 289
 290 // True if was a button down event (1 = left, 2 = middle, 3 = right)
 291 // or any button down event (but = -1)
 292 bool wxMouseEvent::ButtonDown(int but) const
 293 {
 294     switch (but)
 295     {
 296         case -1:
 297             return (LeftDown() || MiddleDown() || RightDown());
 298         case 1:
 299             return LeftDown();
 300         case 2:
 301             return MiddleDown();
 302         case 3:
 303             return RightDown();
 304         default:
 305             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 306     }
 307
 308     return FALSE;
 309 }
 310
 311 // True if was a button up event (1 = left, 2 = middle, 3 = right)
 312 // or any button up event (but = -1)
 313 bool wxMouseEvent::ButtonUp(int but) const
 314 {
 315     switch (but) {
 316         case -1:
 317             return (LeftUp() || MiddleUp() || RightUp());
 318         case 1:
 319             return LeftUp();
 320         case 2:
 321             return MiddleUp();
 322         case 3:
 323             return RightUp();
 324         default:
 325             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 326     }
 327
 328     return FALSE;
 329 }
 330
 331 // True if the given button is currently changing state
 332 bool wxMouseEvent::Button(int but) const
 333 {
 334     switch (but) {
 335         case -1:
 336             return (ButtonUp(-1) || ButtonDown(-1) || ButtonDClick(-1));
 337         case 1:
 338             return (LeftDown() || LeftUp() || LeftDClick());
 339         case 2:
 340             return (MiddleDown() || MiddleUp() || MiddleDClick());
 341         case 3:
 342             return (RightDown() || RightUp() || RightDClick());
 343         default:
 344             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 345     }
 346
 347     return FALSE;
 348 }
 349
 350 bool wxMouseEvent::ButtonIsDown(int but) const
 351 {
 352     switch (but) {
 353         case -1:
 354             return (LeftIsDown() || MiddleIsDown() || RightIsDown());
 355         case 1:
 356             return LeftIsDown();
 357         case 2:
 358             return MiddleIsDown();
 359         case 3:
 360             return RightIsDown();
 361         default:
 362             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 363     }
 364
 365     return FALSE;
 366 }
 367
 368 // Find the logical position of the event given the DC
 369 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 370 {
 371     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 372     return pt;
 373 }
 374
 375
 376 /*
 377  * Keyboard events
 378  *
 379  */
 380
 381 wxKeyEvent::wxKeyEvent(wxEventType type)
 382 {
 383     m_eventType = type;
 384     m_shiftDown = FALSE;
 385     m_controlDown = FALSE;
 386     m_metaDown = FALSE;
 387     m_altDown = FALSE;
 388     m_keyCode = 0;
 389     m_scanCode = 0;
 390 }
 391
 392 void wxKeyEvent::CopyObject(wxObject& obj_d) const
 393 {
 394     wxKeyEvent *obj = (wxKeyEvent *)&obj_d;
 395     wxEvent::CopyObject(obj_d);
 396
 397     obj->m_x = m_x;
 398     obj->m_y = m_y;
 399     obj->m_keyCode = m_keyCode;
 400
 401     obj->m_shiftDown   = m_shiftDown;
 402     obj->m_controlDown = m_controlDown;
 403     obj->m_metaDown    = m_metaDown;
 404     obj->m_altDown     = m_altDown;
 405     obj->m_keyCode     = m_keyCode;
 406 }
 407
 408
 409 /*
 410  * Misc events
 411  */
 412
 413 void wxSizeEvent::CopyObject(wxObject& obj_d) const
 414 {
 415     wxSizeEvent *obj = (wxSizeEvent *)&obj_d;
 416     wxEvent::CopyObject(obj_d);
 417
 418     obj->m_size = m_size;
 419 }
 420
 421 void wxMoveEvent::CopyObject(wxObject& obj_d) const
 422 {
 423     wxMoveEvent *obj = (wxMoveEvent *)&obj_d;
 424     wxEvent::CopyObject(obj_d);
 425
 426     obj->m_pos = m_pos;
 427 }
 428
 429 void wxEraseEvent::CopyObject(wxObject& obj_d) const
 430 {
 431     wxEraseEvent *obj = (wxEraseEvent *)&obj_d;
 432     wxEvent::CopyObject(obj_d);
 433
 434     obj->m_dc = m_dc;
 435 }
 436
 437 void wxActivateEvent::CopyObject(wxObject& obj_d) const
 438 {
 439     wxActivateEvent *obj = (wxActivateEvent *)&obj_d;
 440     wxEvent::CopyObject(obj_d);
 441
 442     obj->m_active = m_active;
 443 }
 444
 445 void wxMenuEvent::CopyObject(wxObject& obj_d) const
 446 {
 447     wxMenuEvent *obj = (wxMenuEvent *)&obj_d;
 448     wxEvent::CopyObject(obj_d);
 449
 450     obj->m_menuId = m_menuId;
 451 }
 452
 453 void wxCloseEvent::CopyObject(wxObject& obj_d) const
 454 {
 455     wxCloseEvent *obj = (wxCloseEvent *)&obj_d;
 456     wxEvent::CopyObject(obj_d);
 457
 458     obj->m_loggingOff = m_loggingOff;
 459     obj->m_veto = m_veto;
 460 #if WXWIN_COMPATIBILITY
 461     obj->m_force = m_force;
 462 #endif
 463     obj->m_canVeto = m_canVeto;
 464 }
 465
 466 void wxShowEvent::CopyObject(wxObject& obj_d) const
 467 {
 468     wxShowEvent *obj = (wxShowEvent *)&obj_d;
 469     wxEvent::CopyObject(obj_d);
 470
 471     obj->m_show = m_show;
 472 }
 473
 474 void wxJoystickEvent::CopyObject(wxObject& obj_d) const
 475 {
 476     wxJoystickEvent *obj = (wxJoystickEvent *)&obj_d;
 477     wxEvent::CopyObject(obj_d);
 478
 479     obj->m_pos = m_pos;
 480     obj->m_zPosition = m_zPosition;
 481     obj->m_buttonChange = m_buttonChange;
 482     obj->m_buttonState = m_buttonState;
 483     obj->m_joyStick = m_joyStick;
 484 }
 485
 486 void wxDropFilesEvent::CopyObject(wxObject& obj_d) const
 487 {
 488     wxDropFilesEvent *obj = (wxDropFilesEvent *)&obj_d;
 489     wxEvent::CopyObject(obj_d);
 490
 491     obj->m_noFiles = m_noFiles;
 492     obj->m_pos = m_pos;
 493     // TODO: Problem with obj->m_files. It should be deallocated by the
 494     // destructor of the event.
 495 }
 496
 497 void wxUpdateUIEvent::CopyObject(wxObject &obj_d) const
 498 {
 499     wxUpdateUIEvent *obj = (wxUpdateUIEvent *)&obj_d;
 500     wxEvent::CopyObject(obj_d);
 501
 502     obj->m_checked = m_checked;
 503     obj->m_enabled = m_enabled;
 504     obj->m_text = m_text;
 505     obj->m_setText = m_setText;
 506     obj->m_setChecked = m_setChecked;
 507     obj->m_setEnabled = m_setEnabled;
 508 }
 509
 510 void wxPaletteChangedEvent::CopyObject(wxObject &obj_d) const
 511 {
 512     wxPaletteChangedEvent *obj = (wxPaletteChangedEvent *)&obj_d;
 513     wxEvent::CopyObject(obj_d);
 514
 515     obj->m_changedWindow = m_changedWindow;
 516 }
 517
 518 void wxQueryNewPaletteEvent::CopyObject(wxObject& obj_d) const
 519 {
 520     wxQueryNewPaletteEvent *obj = (wxQueryNewPaletteEvent *)&obj_d;
 521     wxEvent::CopyObject(obj_d);
 522
 523     obj->m_paletteRealized = m_paletteRealized;
 524 }
 525
 526 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 527 {
 528     SetEventType(wxEVT_CREATE);
 529     SetEventObject(win);
 530 }
 531
 532 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 533 {
 534     SetEventType(wxEVT_DESTROY);
 535     SetEventObject(win);
 536 }
 537
 538 #endif // wxUSE_GUI
 539
 540 void wxIdleEvent::CopyObject(wxObject& obj_d) const
 541 {
 542     wxIdleEvent *obj = (wxIdleEvent *)&obj_d;
 543     wxEvent::CopyObject(obj_d);
 544
 545     obj->m_requestMore = m_requestMore;
 546 }
 547
 548 /*
 549  * Event handler
 550  */
 551
 552 wxEvtHandler::wxEvtHandler()
 553 {
 554     m_nextHandler = (wxEvtHandler *) NULL;
 555     m_previousHandler = (wxEvtHandler *) NULL;
 556     m_enabled = TRUE;
 557     m_dynamicEvents = (wxList *) NULL;
 558     m_isWindow = FALSE;
 559     m_pendingEvents = (wxList *) NULL;
 560 #if wxUSE_THREADS
 561 #  if !defined(__VISAGECPP__)
 562     m_eventsLocker = new wxCriticalSection;
 563 #  endif
 564 #endif
 565 }
 566
 567 wxEvtHandler::~wxEvtHandler()
 568 {
 569     // Takes itself out of the list of handlers
 570     if (m_previousHandler)
 571         m_previousHandler->m_nextHandler = m_nextHandler;
 572
 573     if (m_nextHandler)
 574         m_nextHandler->m_previousHandler = m_previousHandler;
 575
 576     if (m_dynamicEvents)
 577     {
 578         wxNode *node = m_dynamicEvents->First();
 579         while (node)
 580         {
 581             wxEventTableEntry *entry = (wxEventTableEntry*)node->Data();
 582             if (entry->m_callbackUserData) delete entry->m_callbackUserData;
 583             delete entry;
 584             node = node->Next();
 585         }
 586         delete m_dynamicEvents;
 587     };
 588
 589     delete m_pendingEvents;
 590
 591 #if wxUSE_THREADS
 592 #  if !defined(__VISAGECPP__)
 593     delete m_eventsLocker;
 594 #  endif
 595 #endif
 596 }
 597
 598 #if wxUSE_THREADS
 599
 600 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
 601 {
 602     // check that we are really in a child thread
 603     wxASSERT_MSG( !wxThread::IsMain(),
 604                   wxT("use ProcessEvent() in main thread") );
 605
 606     AddPendingEvent(event);
 607
 608     return TRUE;
 609 }
 610
 611 #endif // wxUSE_THREADS
 612
 613 void wxEvtHandler::AddPendingEvent(wxEvent& event)
 614 {
 615     // 1) Add event to list of pending events of this event handler
 616
 617 #if defined(__VISAGECPP__)
 618     wxENTER_CRIT_SECT( m_eventsLocker);
 619 #else
 620     wxENTER_CRIT_SECT( *m_eventsLocker);
 621 #endif
 622
 623     if ( !m_pendingEvents )
 624       m_pendingEvents = new wxList;
 625
 626     wxEvent *event2 = (wxEvent *)event.Clone();
 627
 628     m_pendingEvents->Append(event2);
 629
 630 #if defined(__VISAGECPP__)
 631     wxLEAVE_CRIT_SECT( m_eventsLocker);
 632 #else
 633     wxLEAVE_CRIT_SECT( *m_eventsLocker);
 634 #endif
 635
 636     // 2) Add this event handler to list of event handlers that
 637     //    have pending events.
 638
 639     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
 640
 641     if ( !wxPendingEvents )
 642         wxPendingEvents = new wxList;
 643     wxPendingEvents->Append(this);
 644
 645     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
 646
 647     // 3) Inform the system that new pending events are somwehere,
 648     //    and that these should be processed in idle time.
 649     wxWakeUpIdle();
 650 }
 651
 652 void wxEvtHandler::ProcessPendingEvents()
 653 {
 654 #if defined(__VISAGECPP__)
 655     wxENTER_CRIT_SECT( m_eventsLocker);
 656 #else
 657     wxENTER_CRIT_SECT( *m_eventsLocker);
 658 #endif
 659
 660     wxNode *node = m_pendingEvents->First();
 661     while ( node )
 662     {
 663         wxEvent *event = (wxEvent *)node->Data();
 664         delete node;
 665
 666         // In ProcessEvent, new events might get added and
 667             // we can safely leave the crtical section here.
 668 #if defined(__VISAGECPP__)
 669         wxLEAVE_CRIT_SECT( m_eventsLocker);
 670 #else
 671         wxLEAVE_CRIT_SECT( *m_eventsLocker);
 672 #endif
 673         ProcessEvent(*event);
 674         delete event;
 675 #if defined(__VISAGECPP__)
 676         wxENTER_CRIT_SECT( m_eventsLocker);
 677 #else
 678         wxENTER_CRIT_SECT( *m_eventsLocker);
 679 #endif
 680
 681         node = m_pendingEvents->First();
 682     }
 683
 684 #if defined(__VISAGECPP__)
 685     wxLEAVE_CRIT_SECT( m_eventsLocker);
 686 #else
 687     wxLEAVE_CRIT_SECT( *m_eventsLocker);
 688 #endif
 689 }
 690
 691 /*
 692  * Event table stuff
 693  */
 694
 695 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 696 {
 697 #if wxUSE_GUI
 698     // check that our flag corresponds to reality
 699     wxASSERT( m_isWindow == IsKindOf(CLASSINFO(wxWindow)) );
 700 #endif // wxUSE_GUI
 701
 702     // An event handler can be enabled or disabled
 703     if ( GetEvtHandlerEnabled() )
 704     {
 705
 706 #if 0
 707 /*
 708         What is this? When using GUI threads, a non main
 709         threads can send an event and process it itself.
 710         This breaks GTK's GUI threads, so please explain.
 711 */
 712
 713         // Check whether we are in a child thread.
 714         if ( !wxThread::IsMain() )
 715           return ProcessThreadEvent(event);
 716 #endif
 717
 718         // Handle per-instance dynamic event tables first
 719         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
 720             return TRUE;
 721
 722         // Then static per-class event tables
 723         const wxEventTable *table = GetEventTable();
 724
 725 #if wxUSE_GUI && wxUSE_VALIDATORS
 726         // Try the associated validator first, if this is a window.
 727         // Problem: if the event handler of the window has been replaced,
 728         // this wxEvtHandler may no longer be a window.
 729         // Therefore validators won't be processed if the handler
 730         // has been replaced with SetEventHandler.
 731         // THIS CAN BE CURED if PushEventHandler is used instead of
 732         // SetEventHandler, and then processing will be passed down the
 733         // chain of event handlers.
 734         if (m_isWindow)
 735         {
 736             wxWindow *win = (wxWindow *)this;
 737
 738             // Can only use the validator of the window which
 739             // is receiving the event
 740             if ( win == event.GetEventObject() )
 741             {
 742                 wxValidator *validator = win->GetValidator();
 743                 if ( validator && validator->ProcessEvent(event) )
 744                 {
 745                     return TRUE;
 746                 }
 747             }
 748         }
 749 #endif
 750
 751         // Search upwards through the inheritance hierarchy
 752         while (table)
 753         {
 754             if ( SearchEventTable((wxEventTable&)*table, event) )
 755                 return TRUE;
 756             table = table->baseTable;
 757         }
 758     }
 759
 760     // Try going down the event handler chain
 761     if ( GetNextHandler() )
 762     {
 763         if ( GetNextHandler()->ProcessEvent(event) )
 764             return TRUE;
 765     }
 766
 767 #if wxUSE_GUI
 768     // Carry on up the parent-child hierarchy,
 769     // but only if event is a command event: it wouldn't
 770     // make sense for a parent to receive a child's size event, for example
 771     if ( m_isWindow && event.IsCommandEvent() )
 772     {
 773         wxWindow *win = (wxWindow *)this;
 774         wxWindow *parent = win->GetParent();
 775         if (parent && !parent->IsBeingDeleted())
 776             return parent->GetEventHandler()->ProcessEvent(event);
 777     }
 778 #endif // wxUSE_GUI
 779
 780     // Last try - application object.
 781     if ( wxTheApp && (this != wxTheApp) )
 782     {
 783         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
 784         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
 785         // processed appropriately via SearchEventTable.
 786         if ( event.GetEventType() != wxEVT_IDLE )
 787         {
 788             if ( wxTheApp->ProcessEvent(event) )
 789                 return TRUE;
 790         }
 791     }
 792
 793     return FALSE;
 794 }
 795
 796 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
 797 {
 798     wxEventType eventType = event.GetEventType();
 799     int eventId = event.GetId();
 800
 801     // BC++ doesn't like testing for m_fn without != 0
 802     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
 803     {
 804         // the line using reference exposes a bug in gcc: although it _seems_
 805         // to work, it leads to weird crashes later on during program
 806         // execution
 807 #ifdef __GNUG__
 808         wxEventTableEntry entry = table.entries[i];
 809 #else
 810         const wxEventTableEntry& entry = table.entries[i];
 811 #endif
 812
 813         // match only if the event type is the same and the id is either -1 in
 814         // the event table (meaning "any") or the event id matches the id
 815         // specified in the event table either exactly or by falling into
 816         // range between first and last
 817         if ( eventType == entry.m_eventType )
 818         {
 819             int tableId1 = entry.m_id,
 820                 tableId2 = entry.m_lastId;
 821
 822             if ( (tableId1 == -1) ||
 823                  (tableId2 == -1 && eventId == tableId1) ||
 824                  (tableId2 != -1 &&
 825                     (eventId >= tableId1 && eventId <= tableId2)) )
 826             {
 827                 event.Skip(FALSE);
 828                 event.m_callbackUserData = entry.m_callbackUserData;
 829
 830                 (this->*((wxEventFunction) (entry.m_fn)))(event);
 831
 832                 return !event.GetSkipped();
 833             }
 834         }
 835     }
 836
 837     return FALSE;
 838 }
 839
 840 void wxEvtHandler::Connect( int id, int lastId,
 841                             wxEventType eventType,
 842                             wxObjectEventFunction func,
 843                             wxObject *userData )
 844 {
 845     wxEventTableEntry *entry = new wxEventTableEntry;
 846     entry->m_id = id;
 847     entry->m_lastId = lastId;
 848     entry->m_eventType = eventType;
 849     entry->m_fn = func;
 850     entry->m_callbackUserData = userData;
 851
 852     if (!m_dynamicEvents)
 853         m_dynamicEvents = new wxList;
 854
 855     m_dynamicEvents->Append( (wxObject*) entry );
 856 }
 857
 858 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
 859                   wxObjectEventFunction func,
 860                   wxObject *userData )
 861 {
 862     if (!m_dynamicEvents)
 863         return FALSE;
 864
 865     wxNode *node = m_dynamicEvents->First();
 866     while (node)
 867     {
 868         wxEventTableEntry *entry = (wxEventTableEntry*)node->Data();
 869         if ((entry->m_id == id) &&
 870             ((entry->m_lastId == lastId) || (lastId == -1)) &&
 871             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
 872             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
 873             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
 874         {
 875             if (entry->m_callbackUserData) delete entry->m_callbackUserData;
 876             m_dynamicEvents->DeleteNode( node );
 877             delete entry;
 878             return TRUE;
 879         }
 880         node = node->Next();
 881     }
 882     return FALSE;
 883 }
 884
 885 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
 886 {
 887     wxCHECK_MSG( m_dynamicEvents, FALSE,
 888                  wxT("caller should check that we have dynamic events") );
 889
 890     int commandId = event.GetId();
 891
 892     wxNode *node = m_dynamicEvents->First();
 893     while (node)
 894     {
 895         wxEventTableEntry *entry = (wxEventTableEntry*)node->Data();
 896
 897         if (entry->m_fn)
 898         {
 899             // Match, if event spec says any id will do (id == -1)
 900             if ( (event.GetEventType() == entry->m_eventType) &&
 901                  (entry->m_id == -1 ||
 902                   (entry->m_lastId == -1 && commandId == entry->m_id) ||
 903                   (entry->m_lastId != -1 &&
 904                   (commandId >= entry->m_id && commandId <= entry->m_lastId))) )
 905             {
 906                 event.Skip(FALSE);
 907                 event.m_callbackUserData = entry->m_callbackUserData;
 908
 909                 (this->*((wxEventFunction) (entry->m_fn)))(event);
 910
 911                 if (event.GetSkipped())
 912                     return FALSE;
 913                 else
 914                     return TRUE;
 915             }
 916         }
 917         node = node->Next();
 918     }
 919     return FALSE;
 920 };
 921
 922 #if WXWIN_COMPATIBILITY
 923 bool wxEvtHandler::OnClose()
 924 {
 925     if (GetNextHandler())
 926         return GetNextHandler()->OnClose();
 927     else
 928         return FALSE;
 929 }
 930 #endif // WXWIN_COMPATIBILITY
 931
 932 #if wxUSE_GUI
 933
 934 // Find a window with the focus, that is also a descendant of the given window.
 935 // This is used to determine the window to initially send commands to.
 936 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
 937 {
 938     // Process events starting with the window with the focus, if any.
 939     wxWindow* focusWin = wxWindow::FindFocus();
 940     wxWindow* win = focusWin;
 941
 942     // Check if this is a descendant of this frame.
 943     // If not, win will be set to NULL.
 944     while (win)
 945     {
 946         if (win == ancestor)
 947             break;
 948         else
 949             win = win->GetParent();
 950     }
 951     if (win == (wxWindow*) NULL)
 952         focusWin = (wxWindow*) NULL;
 953
 954     return focusWin;
 955 }
 956
 957 #endif // wxUSE_GUI