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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
  21 // Some older compilers (such as EMX) cannot handle
  22 // #pragma interface/implementation correctly, iff
  23 // #pragma implementation is used in _two_ translation
  24 // units (as created by e.g. event.cpp compiled for
  25 // libwx_base and event.cpp compiled for libwx_gui_core).
  26 // So we must not use those pragmas for those compilers in
  27 // such files.
  28     #pragma implementation "event.h"
  29 #endif
  30
  31 // For compilers that support precompilation, includes "wx.h".
  32 #include "wx/wxprec.h"
  33
  34 #ifdef __BORLANDC__
  35     #pragma hdrstop
  36 #endif
  37
  38 #ifndef WX_PRECOMP
  39     #include "wx/defs.h"
  40     #include "wx/app.h"
  41     #include "wx/list.h"
  42
  43     #if wxUSE_GUI
  44         #include "wx/control.h"
  45         #include "wx/utils.h"
  46         #include "wx/dc.h"
  47     #endif // wxUSE_GUI
  48 #endif
  49
  50 #include "wx/event.h"
  51 #include "wx/module.h"
  52
  53 #if wxUSE_GUI
  54     #include "wx/validate.h"
  55 #if wxUSE_STOPWATCH
  56     #include "wx/stopwatch.h"
  57 #endif
  58 #endif // wxUSE_GUI
  59
  60 // ----------------------------------------------------------------------------
  61 // wxWin macros
  62 // ----------------------------------------------------------------------------
  63
  64 #if wxUSE_BASE
  65     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  66     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  67 #endif // wxUSE_BASE
  68
  69 #if wxUSE_GUI
  70     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
 102     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
 103     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
 104     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 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_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 122
 123
 124 #ifdef __WXDEBUG__
 125 // Clear up event hash table contents or we can get problems
 126 // when C++ is cleaning up the static object
 127 class wxEventTableEntryModule: public wxModule
 128 {
 129 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 130 public:
 131     wxEventTableEntryModule() {}
 132     bool OnInit() { return true; }
 133     void OnExit()
 134     {
 135         wxEventHashTable::ClearAll();
 136     }
 137 };
 138 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 139 #endif
 140
 141 // ----------------------------------------------------------------------------
 142 // global variables
 143 // ----------------------------------------------------------------------------
 144
 145 // To put pending event handlers
 146 wxList *wxPendingEvents = (wxList *)NULL;
 147
 148 #if wxUSE_THREADS
 149     // protects wxPendingEvents list
 150     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 151 #endif
 152
 153 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 154
 155 // common event types are defined here, other event types are defined by the
 156 // components which use them
 157
 158 const wxEventType wxEVT_FIRST = 10000;
 159 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 160
 161 DEFINE_EVENT_TYPE(wxEVT_NULL)
 162 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 163 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 164
 165 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 166
 167 #endif // wxUSE_BASE
 168
 169 #if wxUSE_GUI
 170
 171 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 172
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 187 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 188 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 189
 190 // Sockets and timers send events, too
 191 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 192
 193 // Mouse event types
 194 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 195 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 196 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 197 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 198 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 199 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 200 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 201 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 202 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 203 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 204 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 205 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 206 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 207 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 208 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 209 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 210
 211 // Non-client mouse events
 212 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 213 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 214 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 215 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 216 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 217 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 218 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 219 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 220 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 221 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 222 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 223 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 224
 225 // Character input event type
 226 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 227 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 228 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 229 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 230 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 231 #if wxUSE_HOTKEY
 232 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 233 #endif
 234
 235 // Set cursor event
 236 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 237
 238 // wxScrollbar and wxSlider event identifiers
 239 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_ENDSCROLL)
 248
 249 // Scroll events from wxWindow
 250 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 258
 259 // System events
 260 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 261 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 262 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 263 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 264 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 265 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 266 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 267 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 268 DEFINE_EVENT_TYPE(wxEVT_POWER)
 269 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 270 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 271 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 272 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 273 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 274 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 275 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 276 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 277 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 278 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 279 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 280 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 281 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 282 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 283 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 284 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 285 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 286 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 287 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 288 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 289 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 290 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 291 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 292 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 293 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 294 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 295 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 296 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 297 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 298 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 299
 300 // Generic command events
 301 // Note: a click is a higher-level event than button down/up
 302 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 304 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 309
 310 // Help events
 311 DEFINE_EVENT_TYPE(wxEVT_HELP)
 312 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 313
 314 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 315
 316 #endif // wxUSE_GUI
 317
 318 #if wxUSE_BASE
 319
 320 // ============================================================================
 321 // implementation
 322 // ============================================================================
 323
 324 // ----------------------------------------------------------------------------
 325 // event initialization
 326 // ----------------------------------------------------------------------------
 327
 328 int wxNewEventType()
 329 {
 330     // MT-FIXME
 331     static int s_lastUsedEventType = wxEVT_FIRST;
 332
 333     return s_lastUsedEventType++;
 334 }
 335
 336 // ----------------------------------------------------------------------------
 337 // wxEvent
 338 // ----------------------------------------------------------------------------
 339
 340 /*
 341  * General wxWidgets events, covering
 342  * all interesting things that might happen (button clicking, resizing,
 343  * setting text in widgets, etc.).
 344  *
 345  * For each completely new event type, derive a new event class.
 346  *
 347  */
 348
 349 wxEvent::wxEvent(int theId, wxEventType commandType )
 350 {
 351     m_eventType = commandType;
 352     m_eventObject = (wxObject *) NULL;
 353     m_timeStamp = 0;
 354     m_id = theId;
 355     m_skipped = false;
 356     m_callbackUserData = (wxObject *) NULL;
 357     m_isCommandEvent = false;
 358     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 359 }
 360
 361 wxEvent::wxEvent(const wxEvent &src)
 362     : wxObject()
 363     , m_eventObject(src.m_eventObject)
 364     , m_eventType(src.m_eventType)
 365     , m_timeStamp(src.m_timeStamp)
 366     , m_id(src.m_id)
 367     , m_callbackUserData(src.m_callbackUserData)
 368     , m_propagationLevel(src.m_propagationLevel)
 369     , m_skipped(src.m_skipped)
 370     , m_isCommandEvent(src.m_isCommandEvent)
 371 {
 372 }
 373
 374 #endif // wxUSE_BASE
 375
 376 #if wxUSE_GUI
 377
 378 /*
 379  * Command events
 380  *
 381  */
 382
 383 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 384               : wxEvent(theId, commandType)
 385 {
 386     m_clientData = (char *) NULL;
 387     m_clientObject = (wxClientData *) NULL;
 388     m_extraLong = 0;
 389     m_commandInt = 0;
 390     m_isCommandEvent = true;
 391
 392     // the command events are propagated upwards by default
 393     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 394 }
 395
 396 /*
 397  * UI update events
 398  */
 399
 400 #if wxUSE_LONGLONG
 401 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 402 #endif
 403
 404 long wxUpdateUIEvent::sm_updateInterval = 0;
 405
 406 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 407
 408 // Can we update?
 409 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 410 {
 411     // Don't update if we've switched global updating off
 412     // and this window doesn't support updates.
 413     if (win &&
 414        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 415        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 416         return false;
 417
 418     if (sm_updateInterval == -1)
 419         return false;
 420
 421     if (sm_updateInterval == 0)
 422         return true;
 423
 424 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 425     wxLongLong now = wxGetLocalTimeMillis();
 426     if (now > (sm_lastUpdate + sm_updateInterval))
 427     {
 428         return true;
 429     }
 430
 431     return false;
 432 #else
 433     // If we don't have wxStopWatch or wxLongLong, we
 434     // should err on the safe side and update now anyway.
 435     return true;
 436 #endif
 437 }
 438
 439 // Reset the update time to provide a delay until the next
 440 // time we should update
 441 void wxUpdateUIEvent::ResetUpdateTime()
 442 {
 443 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 444     if (sm_updateInterval > 0)
 445     {
 446         wxLongLong now = wxGetLocalTimeMillis();
 447         if (now > (sm_lastUpdate + sm_updateInterval))
 448         {
 449             sm_lastUpdate = now;
 450         }
 451     }
 452 #endif
 453 }
 454
 455 /*
 456  * Idle events
 457  */
 458
 459 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 460
 461 // Can we send an idle event?
 462 bool wxIdleEvent::CanSend(wxWindow* win)
 463 {
 464     // Don't update if we've switched global updating off
 465     // and this window doesn't support updates.
 466     if (win &&
 467        (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
 468        ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
 469         return false;
 470
 471     return true;
 472 }
 473
 474 /*
 475  * Scroll events
 476  */
 477
 478 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 479                              int id,
 480                              int pos,
 481                              int orient)
 482     : wxCommandEvent(commandType, id)
 483 {
 484     m_extraLong = orient;
 485     m_commandInt = pos;
 486 }
 487
 488 /*
 489  * ScrollWin events
 490  */
 491
 492 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 493                                    int pos,
 494                                    int orient)
 495 {
 496     m_eventType = commandType;
 497     m_extraLong = orient;
 498     m_commandInt = pos;
 499 }
 500
 501 /*
 502  * Mouse events
 503  *
 504  */
 505
 506 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 507 {
 508     m_eventType = commandType;
 509     m_metaDown = false;
 510     m_altDown = false;
 511     m_controlDown = false;
 512     m_shiftDown = false;
 513     m_leftDown = false;
 514     m_rightDown = false;
 515     m_middleDown = false;
 516     m_x = 0;
 517     m_y = 0;
 518     m_wheelRotation = 0;
 519     m_wheelDelta = 0;
 520     m_linesPerAction = 0;
 521 }
 522
 523 void wxMouseEvent::Assign(const wxMouseEvent& event)
 524 {
 525     m_eventType = event.m_eventType;
 526
 527     m_x = event.m_x;
 528     m_y = event.m_y;
 529
 530     m_leftDown = event.m_leftDown;
 531     m_middleDown = event.m_middleDown;
 532     m_rightDown = event.m_rightDown;
 533
 534     m_controlDown = event.m_controlDown;
 535     m_shiftDown = event.m_shiftDown;
 536     m_altDown = event.m_altDown;
 537     m_metaDown = event.m_metaDown;
 538
 539     m_wheelRotation = event.m_wheelRotation;
 540     m_wheelDelta = event.m_wheelDelta;
 541     m_linesPerAction = event.m_linesPerAction;
 542 }
 543
 544 // return true if was a button dclick event
 545 bool wxMouseEvent::ButtonDClick(int but) const
 546 {
 547     switch (but)
 548     {
 549         default:
 550             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 551             // fall through
 552
 553         case wxMOUSE_BTN_ANY:
 554             return (LeftDClick() || MiddleDClick() || RightDClick());
 555
 556         case wxMOUSE_BTN_LEFT:
 557             return LeftDClick();
 558
 559         case wxMOUSE_BTN_MIDDLE:
 560             return MiddleDClick();
 561
 562         case wxMOUSE_BTN_RIGHT:
 563             return RightDClick();
 564     }
 565 }
 566
 567 // return true if was a button down event
 568 bool wxMouseEvent::ButtonDown(int but) const
 569 {
 570     switch (but)
 571     {
 572         default:
 573             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 574             // fall through
 575
 576         case wxMOUSE_BTN_ANY:
 577             return (LeftDown() || MiddleDown() || RightDown());
 578
 579         case wxMOUSE_BTN_LEFT:
 580             return LeftDown();
 581
 582         case wxMOUSE_BTN_MIDDLE:
 583             return MiddleDown();
 584
 585         case wxMOUSE_BTN_RIGHT:
 586             return RightDown();
 587     }
 588 }
 589
 590 // return true if was a button up event
 591 bool wxMouseEvent::ButtonUp(int but) const
 592 {
 593     switch (but)
 594     {
 595         default:
 596             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 597             // fall through
 598
 599         case wxMOUSE_BTN_ANY:
 600             return (LeftUp() || MiddleUp() || RightUp());
 601
 602         case wxMOUSE_BTN_LEFT:
 603             return LeftUp();
 604
 605         case wxMOUSE_BTN_MIDDLE:
 606             return MiddleUp();
 607
 608         case wxMOUSE_BTN_RIGHT:
 609             return RightUp();
 610     }
 611 }
 612
 613 // return true if the given button is currently changing state
 614 bool wxMouseEvent::Button(int but) const
 615 {
 616     switch (but)
 617     {
 618         default:
 619             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 620             // fall through
 621
 622         case wxMOUSE_BTN_ANY:
 623             return ButtonUp(wxMOUSE_BTN_ANY) ||
 624                     ButtonDown(wxMOUSE_BTN_ANY) ||
 625                         ButtonDClick(wxMOUSE_BTN_ANY);
 626
 627         case wxMOUSE_BTN_LEFT:
 628             return LeftDown() || LeftUp() || LeftDClick();
 629
 630         case wxMOUSE_BTN_MIDDLE:
 631             return MiddleDown() || MiddleUp() || MiddleDClick();
 632
 633         case wxMOUSE_BTN_RIGHT:
 634             return RightDown() || RightUp() || RightDClick();
 635     }
 636 }
 637
 638 bool wxMouseEvent::ButtonIsDown(int but) const
 639 {
 640     switch (but)
 641     {
 642         default:
 643             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 644             // fall through
 645
 646         case wxMOUSE_BTN_ANY:
 647             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 648
 649         case wxMOUSE_BTN_LEFT:
 650             return LeftIsDown();
 651
 652         case wxMOUSE_BTN_MIDDLE:
 653             return MiddleIsDown();
 654
 655         case wxMOUSE_BTN_RIGHT:
 656             return RightIsDown();
 657     }
 658 }
 659
 660 int wxMouseEvent::GetButton() const
 661 {
 662     for ( int i = 1; i <= 3; i++ )
 663     {
 664         if ( Button(i) )
 665         {
 666             return i;
 667         }
 668     }
 669
 670     return wxMOUSE_BTN_NONE;
 671 }
 672
 673 // Find the logical position of the event given the DC
 674 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 675 {
 676     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 677     return pt;
 678 }
 679
 680
 681 /*
 682  * Keyboard event
 683  *
 684  */
 685
 686 wxKeyEvent::wxKeyEvent(wxEventType type)
 687 {
 688     m_eventType = type;
 689     m_shiftDown = false;
 690     m_controlDown = false;
 691     m_metaDown = false;
 692     m_altDown = false;
 693     m_keyCode = 0;
 694     m_scanCode = 0;
 695 #if wxUSE_UNICODE
 696     m_uniChar = 0;
 697 #endif
 698 }
 699
 700 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 701     : wxEvent(evt)
 702 {
 703     m_x = evt.m_x;
 704     m_y = evt.m_y;
 705
 706     m_keyCode = evt.m_keyCode;
 707
 708     m_controlDown = evt.m_controlDown;
 709     m_shiftDown = evt.m_shiftDown;
 710     m_altDown = evt.m_altDown;
 711     m_metaDown = evt.m_metaDown;
 712     m_scanCode = evt.m_scanCode;
 713     m_rawCode = evt.m_rawCode;
 714     m_rawFlags = evt.m_rawFlags;
 715
 716 #if wxUSE_UNICODE
 717     m_uniChar = evt.m_uniChar;
 718 #endif
 719 }
 720
 721 long wxKeyEvent::KeyCode() const
 722 {
 723     return m_keyCode;
 724 }
 725
 726 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 727 {
 728     SetEventType(wxEVT_CREATE);
 729     SetEventObject(win);
 730 }
 731
 732 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 733 {
 734     SetEventType(wxEVT_DESTROY);
 735     SetEventObject(win);
 736 }
 737
 738 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 739                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 740 {
 741     SetEventObject(win);
 742 }
 743
 744 #endif // wxUSE_GUI
 745
 746
 747 #if wxUSE_BASE
 748
 749 // ----------------------------------------------------------------------------
 750 // wxEventHashTable
 751 // ----------------------------------------------------------------------------
 752
 753 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 754
 755 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 756
 757 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 758                 : m_table(table),
 759                   m_rebuildHash(true)
 760 {
 761     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 762
 763     m_next = sm_first;
 764     if (m_next)
 765         m_next->m_previous = this;
 766     sm_first = this;
 767 }
 768
 769 wxEventHashTable::~wxEventHashTable()
 770 {
 771     if (m_next)
 772         m_next->m_previous = m_previous;
 773     if (m_previous)
 774         m_previous->m_next = m_next;
 775     if (sm_first == this)
 776         sm_first = m_next;
 777
 778     Clear();
 779 }
 780
 781 void wxEventHashTable::Clear()
 782 {
 783     size_t i;
 784     for(i = 0; i < m_size; i++)
 785     {
 786         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 787         if (eTTnode)
 788         {
 789             delete eTTnode;
 790         }
 791     }
 792
 793     // Necessary in order to not invoke the
 794     // overloaded delete operator when statics are cleaned up
 795     if (m_eventTypeTable)
 796         delete[] m_eventTypeTable;
 797
 798     m_eventTypeTable = NULL;
 799     m_size = 0;
 800 }
 801
 802 // Clear all tables
 803 void wxEventHashTable::ClearAll()
 804 {
 805     wxEventHashTable* table = sm_first;
 806     while (table)
 807     {
 808         table->Clear();
 809         table = table->m_next;
 810     }
 811 }
 812
 813 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 814 {
 815     if (m_rebuildHash)
 816     {
 817         InitHashTable();
 818         m_rebuildHash = false;
 819     }
 820
 821     if (!m_eventTypeTable)
 822         return FALSE;
 823
 824     // Find all entries for the given event type.
 825     wxEventType eventType = event.GetEventType();
 826     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 827     if (eTTnode && eTTnode->eventType == eventType)
 828     {
 829         // Now start the search for an event handler
 830         // that can handle an event with the given ID.
 831         const wxEventTableEntryPointerArray&
 832             eventEntryTable = eTTnode->eventEntryTable;
 833
 834         const size_t count = eventEntryTable.GetCount();
 835         for (size_t n = 0; n < count; n++)
 836         {
 837             if ( wxEvtHandler::
 838                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 839             {
 840                 return true;
 841             }
 842         }
 843     }
 844
 845     return false;
 846 }
 847
 848 void wxEventHashTable::InitHashTable()
 849 {
 850     // Loop over the event tables and all its base tables.
 851     const wxEventTable *table = &m_table;
 852     while (table)
 853     {
 854         // Retrieve all valid event handler entries
 855         const wxEventTableEntry *entry = table->entries;
 856         while (entry->m_fn != 0)
 857         {
 858             // Add the event entry in the Hash.
 859             AddEntry(*entry);
 860
 861             entry++;
 862         }
 863
 864         table = table->baseTable;
 865     }
 866
 867     // Lets free some memory.
 868     size_t i;
 869     for(i = 0; i < m_size; i++)
 870     {
 871         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 872         if (eTTnode)
 873         {
 874             eTTnode->eventEntryTable.Shrink();
 875         }
 876     }
 877 }
 878
 879 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 880 {
 881     // This might happen 'accidentally' as the app is exiting
 882     if (!m_eventTypeTable)
 883         return;
 884
 885     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 886     EventTypeTablePointer  eTTnode = *peTTnode;
 887
 888     if (eTTnode)
 889     {
 890         if (eTTnode->eventType != entry.m_eventType)
 891         {
 892             // Resize the table!
 893             GrowEventTypeTable();
 894             // Try again to add it.
 895             AddEntry(entry);
 896             return;
 897         }
 898     }
 899     else
 900     {
 901         eTTnode = new EventTypeTable;
 902         eTTnode->eventType = entry.m_eventType;
 903         *peTTnode = eTTnode;
 904     }
 905
 906     // Fill all hash entries between entry.m_id and entry.m_lastId...
 907     eTTnode->eventEntryTable.Add(&entry);
 908 }
 909
 910 void wxEventHashTable::AllocEventTypeTable(size_t size)
 911 {
 912     m_eventTypeTable = new EventTypeTablePointer[size];
 913     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 914     m_size = size;
 915 }
 916
 917 void wxEventHashTable::GrowEventTypeTable()
 918 {
 919     size_t oldSize = m_size;
 920     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 921
 922     // TODO: Search the most optimal grow sequence
 923     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 924
 925     for ( size_t i = 0; i < oldSize; /* */ )
 926     {
 927         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 928         if (eTToldNode)
 929         {
 930             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 931             EventTypeTablePointer  eTTnode = *peTTnode;
 932
 933             // Check for collision, we don't want any.
 934             if (eTTnode)
 935             {
 936                 GrowEventTypeTable();
 937                 continue; // Don't increment the counter,
 938                           // as we still need to add this element.
 939             }
 940             else
 941             {
 942                 // Get the old value and put it in the new table.
 943                 *peTTnode = oldEventTypeTable[i];
 944             }
 945         }
 946
 947         i++;
 948     }
 949
 950     delete[] oldEventTypeTable;
 951 }
 952
 953
 954 // ----------------------------------------------------------------------------
 955 // wxEvtHandler
 956 // ----------------------------------------------------------------------------
 957
 958 /*
 959  * Event handler
 960  */
 961
 962 wxEvtHandler::wxEvtHandler()
 963 {
 964     m_nextHandler = (wxEvtHandler *) NULL;
 965     m_previousHandler = (wxEvtHandler *) NULL;
 966     m_enabled = true;
 967     m_dynamicEvents = (wxList *) NULL;
 968     m_pendingEvents = (wxList *) NULL;
 969 #if wxUSE_THREADS
 970 #  if !defined(__VISAGECPP__)
 971     m_eventsLocker = new wxCriticalSection;
 972 #  endif
 973 #endif
 974     // no client data (yet)
 975     m_clientData = NULL;
 976     m_clientDataType = wxClientData_None;
 977 }
 978
 979 wxEvtHandler::~wxEvtHandler()
 980 {
 981     // Takes itself out of the list of handlers
 982     if (m_previousHandler)
 983         m_previousHandler->m_nextHandler = m_nextHandler;
 984
 985     if (m_nextHandler)
 986         m_nextHandler->m_previousHandler = m_previousHandler;
 987
 988     if (m_dynamicEvents)
 989     {
 990         wxList::iterator it = m_dynamicEvents->begin(),
 991                          en = m_dynamicEvents->end();
 992         for (;it != en; ++it)
 993         {
 994 #if WXWIN_COMPATIBILITY_EVENT_TYPES
 995             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
 996 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
 997             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
 998 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
 999
1000             if (entry->m_callbackUserData)
1001                 delete entry->m_callbackUserData;
1002             delete entry;
1003         }
1004         delete m_dynamicEvents;
1005     };
1006
1007     delete m_pendingEvents;
1008
1009 #if wxUSE_THREADS
1010 #  if !defined(__VISAGECPP__)
1011     delete m_eventsLocker;
1012 #  endif
1013
1014     // Remove us from wxPendingEvents if necessary.
1015     if(wxPendingEventsLocker)
1016         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1017     if ( wxPendingEvents ) {
1018         wxPendingEvents->DeleteObject(this);
1019     }
1020     if(wxPendingEventsLocker)
1021         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1022 #endif
1023
1024     // we only delete object data, not untyped
1025     if ( m_clientDataType == wxClientData_Object )
1026         delete m_clientObject;
1027 }
1028
1029 #if wxUSE_THREADS
1030
1031 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1032 {
1033     // check that we are really in a child thread
1034     wxASSERT_MSG( !wxThread::IsMain(),
1035                   wxT("use ProcessEvent() in main thread") );
1036
1037     AddPendingEvent(event);
1038
1039     return true;
1040 }
1041
1042 void wxEvtHandler::ClearEventLocker()
1043 {
1044 #if !defined(__VISAGECPP__)
1045     delete m_eventsLocker;
1046     m_eventsLocker = NULL;
1047 #endif
1048 };
1049
1050 #endif // wxUSE_THREADS
1051
1052 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1053 {
1054     // 1) Add event to list of pending events of this event handler
1055
1056     wxEvent *eventCopy = event.Clone();
1057
1058     // we must be able to copy the events here so the event class must
1059     // implement Clone() properly instead of just providing a NULL stab for it
1060     wxCHECK_RET( eventCopy,
1061                  _T("events of this type aren't supposed to be posted") );
1062
1063 #if defined(__VISAGECPP__)
1064     wxENTER_CRIT_SECT( m_eventsLocker);
1065 #else
1066     wxENTER_CRIT_SECT( *m_eventsLocker);
1067 #endif
1068
1069     if ( !m_pendingEvents )
1070       m_pendingEvents = new wxList;
1071
1072     m_pendingEvents->Append(eventCopy);
1073
1074 #if defined(__VISAGECPP__)
1075     wxLEAVE_CRIT_SECT( m_eventsLocker);
1076 #else
1077     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1078 #endif
1079
1080     // 2) Add this event handler to list of event handlers that
1081     //    have pending events.
1082
1083     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1084
1085     if ( !wxPendingEvents )
1086         wxPendingEvents = new wxList;
1087     wxPendingEvents->Append(this);
1088
1089     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1090
1091     // 3) Inform the system that new pending events are somwehere,
1092     //    and that these should be processed in idle time.
1093     wxWakeUpIdle();
1094 }
1095
1096 void wxEvtHandler::ProcessPendingEvents()
1097 {
1098     // this method is only called by wxApp if this handler does have pending
1099     // events
1100     wxCHECK_RET( m_pendingEvents,
1101                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1102
1103 #if defined(__VISAGECPP__)
1104     wxENTER_CRIT_SECT( m_eventsLocker);
1105 #else
1106     wxENTER_CRIT_SECT( *m_eventsLocker);
1107 #endif
1108
1109     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1110     while ( node )
1111     {
1112         wxEvent *event = (wxEvent *)node->GetData();
1113         m_pendingEvents->Erase(node);
1114
1115         // In ProcessEvent, new events might get added and
1116         // we can safely leave the crtical section here.
1117 #if defined(__VISAGECPP__)
1118         wxLEAVE_CRIT_SECT( m_eventsLocker);
1119 #else
1120         wxLEAVE_CRIT_SECT( *m_eventsLocker);
1121 #endif
1122         ProcessEvent(*event);
1123         delete event;
1124 #if defined(__VISAGECPP__)
1125         wxENTER_CRIT_SECT( m_eventsLocker);
1126 #else
1127         wxENTER_CRIT_SECT( *m_eventsLocker);
1128 #endif
1129
1130         node = m_pendingEvents->GetFirst();
1131     }
1132
1133 #if defined(__VISAGECPP__)
1134     wxLEAVE_CRIT_SECT( m_eventsLocker);
1135 #else
1136     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1137 #endif
1138 }
1139
1140 /*
1141  * Event table stuff
1142  */
1143 /* static */ bool
1144 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1145                                     wxEvtHandler *handler,
1146                                     wxEvent& event)
1147 {
1148     int tableId1 = entry.m_id,
1149         tableId2 = entry.m_lastId;
1150
1151     // match only if the event type is the same and the id is either -1 in
1152     // the event table (meaning "any") or the event id matches the id
1153     // specified in the event table either exactly or by falling into
1154     // range between first and last
1155     if ((tableId1 == -1) ||
1156         (tableId2 == -1 && tableId1 == event.GetId()) ||
1157         (tableId2 != -1 &&
1158          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1159     {
1160         event.Skip(false);
1161         event.m_callbackUserData = entry.m_callbackUserData;
1162
1163 #if wxUSE_EXCEPTIONS
1164         if ( wxTheApp )
1165         {
1166             // call the handler via wxApp method which allows the user to catch
1167             // any exceptions which may be thrown by any handler in the program
1168             // in one place
1169             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1170         }
1171         else
1172 #endif // wxUSE_EXCEPTIONS
1173         {
1174             // no need for an extra virtual function call
1175             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1176         }
1177
1178         if (!event.GetSkipped())
1179             return true;
1180     }
1181
1182     return false;
1183 }
1184
1185 bool wxEvtHandler::TryParent(wxEvent& event)
1186 {
1187     if ( wxTheApp && (this != wxTheApp) )
1188     {
1189         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1190         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1191         // processed appropriately via SearchEventTable.
1192         if ( event.GetEventType() != wxEVT_IDLE )
1193         {
1194             if ( wxTheApp->ProcessEvent(event) )
1195                 return true;
1196         }
1197     }
1198
1199     return false;
1200 }
1201
1202 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1203 {
1204     // allow the application to hook into event processing
1205     if ( wxTheApp )
1206     {
1207         int rc = wxTheApp->FilterEvent(event);
1208         if ( rc != -1 )
1209         {
1210             wxASSERT_MSG( rc == 1 || rc == 0,
1211                           _T("unexpected wxApp::FilterEvent return value") );
1212
1213             return rc != 0;
1214         }
1215         //else: proceed normally
1216     }
1217
1218     // An event handler can be enabled or disabled
1219     if ( GetEvtHandlerEnabled() )
1220     {
1221         // if we have a validator, it has higher priority than our own event
1222         // table
1223         if ( TryValidator(event) )
1224             return true;
1225
1226         // Handle per-instance dynamic event tables first
1227         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1228             return true;
1229
1230         // Then static per-class event tables
1231         if ( GetEventHashTable().HandleEvent(event, this) )
1232             return true;
1233     }
1234
1235     // Try going down the event handler chain
1236     if ( GetNextHandler() )
1237     {
1238         if ( GetNextHandler()->ProcessEvent(event) )
1239             return true;
1240     }
1241
1242     // Finally propagate the event upwards the window chain and/or to the
1243     // application object as necessary
1244     return TryParent(event);
1245 }
1246
1247
1248 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1249 {
1250     const wxEventType eventType = event.GetEventType();
1251     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1252     {
1253         const wxEventTableEntry& entry = table.entries[i];
1254         if ( eventType == entry.m_eventType )
1255         {
1256             if ( ProcessEventIfMatches(entry, this, event) )
1257                 return true;
1258         }
1259     }
1260
1261     return false;
1262 }
1263
1264 void wxEvtHandler::Connect( int id, int lastId,
1265                             int eventType,
1266                             wxObjectEventFunction func,
1267                             wxObject *userData,
1268                             wxEvtHandler* eventSink )
1269 {
1270 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1271     wxEventTableEntry *entry = new wxEventTableEntry;
1272     entry->m_eventType = eventType;
1273     entry->m_id = id;
1274     entry->m_lastId = lastId;
1275     entry->m_fn = func;
1276     entry->m_callbackUserData = userData;
1277 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1278     wxDynamicEventTableEntry *entry =
1279         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1280 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1281
1282     if (!m_dynamicEvents)
1283         m_dynamicEvents = new wxList;
1284
1285     // Insert at the front of the list so most recent additions are found first
1286     m_dynamicEvents->Insert( (wxObject*) entry );
1287 }
1288
1289 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1290                   wxObjectEventFunction func,
1291                   wxObject *userData,
1292                   wxEvtHandler* eventSink )
1293 {
1294     if (!m_dynamicEvents)
1295         return false;
1296
1297     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1298     while (node)
1299     {
1300 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1301             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1302 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1303             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1304 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1305
1306         if ((entry->m_id == id) &&
1307             ((entry->m_lastId == lastId) || (lastId == -1)) &&
1308             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1309             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1310             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1311             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1312         {
1313             if (entry->m_callbackUserData)
1314                 delete entry->m_callbackUserData;
1315             m_dynamicEvents->Erase( node );
1316             delete entry;
1317             return true;
1318         }
1319         node = node->GetNext();
1320     }
1321     return false;
1322 }
1323
1324 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1325 {
1326     wxCHECK_MSG( m_dynamicEvents, false,
1327                  wxT("caller should check that we have dynamic events") );
1328
1329     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1330     while (node)
1331     {
1332 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1333         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1334 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1335         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1336 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1337
1338         if ((event.m_eventType == entry->m_eventType) && (entry->m_fn != 0))
1339         {
1340             wxEvtHandler *handler =
1341 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1342                                     entry->m_eventSink ? entry->m_eventSink
1343                                                        :
1344 #endif
1345                                                          this;
1346
1347             if ( ProcessEventIfMatches(*entry, handler, event) )
1348             {
1349                 return true;
1350             }
1351         }
1352
1353         node = node->GetNext();
1354     }
1355
1356     return false;
1357 };
1358
1359 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1360 {
1361     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1362                   wxT("can't have both object and void client data") );
1363
1364     if ( m_clientObject )
1365         delete m_clientObject;
1366
1367     m_clientObject = data;
1368     m_clientDataType = wxClientData_Object;
1369 }
1370
1371 wxClientData *wxEvtHandler::DoGetClientObject() const
1372 {
1373     // it's not an error to call GetClientObject() on a window which doesn't
1374     // have client data at all - NULL will be returned
1375     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1376                   wxT("this window doesn't have object client data") );
1377
1378     return m_clientObject;
1379 }
1380
1381 void wxEvtHandler::DoSetClientData( void *data )
1382 {
1383     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1384                   wxT("can't have both object and void client data") );
1385
1386     m_clientData = data;
1387     m_clientDataType = wxClientData_Void;
1388 }
1389
1390 void *wxEvtHandler::DoGetClientData() const
1391 {
1392     // it's not an error to call GetClientData() on a window which doesn't have
1393     // client data at all - NULL will be returned
1394     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1395                   wxT("this window doesn't have void client data") );
1396
1397     return m_clientData;
1398 }
1399
1400 #endif // wxUSE_BASE
1401
1402 #if wxUSE_GUI
1403
1404 // Find a window with the focus, that is also a descendant of the given window.
1405 // This is used to determine the window to initially send commands to.
1406 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1407 {
1408     // Process events starting with the window with the focus, if any.
1409     wxWindow* focusWin = wxWindow::FindFocus();
1410     wxWindow* win = focusWin;
1411
1412     // Check if this is a descendant of this frame.
1413     // If not, win will be set to NULL.
1414     while (win)
1415     {
1416         if (win == ancestor)
1417             break;
1418         else
1419             win = win->GetParent();
1420     }
1421     if (win == (wxWindow*) NULL)
1422         focusWin = (wxWindow*) NULL;
1423
1424     return focusWin;
1425 }
1426
1427 #endif // wxUSE_GUI