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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/defs.h"
  29     #include "wx/app.h"
  30     #include "wx/list.h"
  31
  32     #if wxUSE_GUI
  33         #include "wx/control.h"
  34         #include "wx/utils.h"
  35         #include "wx/dc.h"
  36         #include "wx/textctrl.h"
  37     #endif // wxUSE_GUI
  38 #endif
  39
  40 #include "wx/event.h"
  41 #include "wx/module.h"
  42
  43 #if wxUSE_GUI
  44     #include "wx/validate.h"
  45 #if wxUSE_STOPWATCH
  46     #include "wx/stopwatch.h"
  47 #endif
  48 #endif // wxUSE_GUI
  49
  50 // ----------------------------------------------------------------------------
  51 // wxWin macros
  52 // ----------------------------------------------------------------------------
  53
  54 #if wxUSE_BASE
  55     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  56     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  57 #endif // wxUSE_BASE
  58
  59 #if wxUSE_GUI
  60     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  61     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  62     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  63     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  64     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  65     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
  95 #endif // wxUSE_GUI
  96
  97 #if wxUSE_BASE
  98
  99 const wxEventTable *wxEvtHandler::GetEventTable() const
 100     { return &wxEvtHandler::sm_eventTable; }
 101
 102 const wxEventTable wxEvtHandler::sm_eventTable =
 103     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 104
 105 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 106     { return wxEvtHandler::sm_eventHashTable; }
 107
 108 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 109
 110 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 111     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 112
 113
 114 #ifdef __WXDEBUG__
 115 // Clear up event hash table contents or we can get problems
 116 // when C++ is cleaning up the static object
 117 class wxEventTableEntryModule: public wxModule
 118 {
 119 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 120 public:
 121     wxEventTableEntryModule() {}
 122     bool OnInit() { return true; }
 123     void OnExit()
 124     {
 125         wxEventHashTable::ClearAll();
 126     }
 127 };
 128 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 129 #endif
 130
 131 // ----------------------------------------------------------------------------
 132 // global variables
 133 // ----------------------------------------------------------------------------
 134
 135 // To put pending event handlers
 136 wxList *wxPendingEvents = (wxList *)NULL;
 137
 138 #if wxUSE_THREADS
 139     // protects wxPendingEvents list
 140     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 141 #endif
 142
 143 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 144
 145 // common event types are defined here, other event types are defined by the
 146 // components which use them
 147
 148 const wxEventType wxEVT_FIRST = 10000;
 149 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 150
 151 DEFINE_EVENT_TYPE(wxEVT_NULL)
 152 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 153 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 154
 155 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 156
 157 #endif // wxUSE_BASE
 158
 159 #if wxUSE_GUI
 160
 161 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 162
 163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 179
 180 // Sockets and timers send events, too
 181 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 182
 183 // Mouse event types
 184 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 185 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 186 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 187 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 188 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 189 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 190 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 191 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 192 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 193 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 194 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 195 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 196 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 197 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 198 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 199 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 200
 201 // Non-client mouse events
 202 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 203 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 204 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 205 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 206 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 207 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 208 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 209 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 210 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 211 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 212 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 213 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 214
 215 // Character input event type
 216 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 217 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 218 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 219 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 220 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 221 #if wxUSE_HOTKEY
 222 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 223 #endif
 224
 225 // Set cursor event
 226 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 227
 228 // wxScrollbar and wxSlider event identifiers
 229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 233 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 234 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 235 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 236 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 237 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 238
 239 // Scroll events from wxWindow
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 248
 249 // System events
 250 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 251 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 252 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 253 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 254 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 255 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 256 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 257 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 258 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 259 DEFINE_EVENT_TYPE(wxEVT_POWER)
 260 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 261 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 262 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 263 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 264 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 265 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 266 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 267 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 268 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 269 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 270 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 271 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 272 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 273 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 274 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 275 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 276 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 277 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 278 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 279 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 280 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 281 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 282 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 283 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 284 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 285 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 286 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 287 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 288 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 289 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 290
 291 // Generic command events
 292 // Note: a click is a higher-level event than button down/up
 293 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 300
 301 // Help events
 302 DEFINE_EVENT_TYPE(wxEVT_HELP)
 303 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 304
 305 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 306
 307 #endif // wxUSE_GUI
 308
 309 #if wxUSE_BASE
 310
 311 // ============================================================================
 312 // implementation
 313 // ============================================================================
 314
 315 // ----------------------------------------------------------------------------
 316 // event initialization
 317 // ----------------------------------------------------------------------------
 318
 319 int wxNewEventType()
 320 {
 321     // MT-FIXME
 322     static int s_lastUsedEventType = wxEVT_FIRST;
 323
 324     return s_lastUsedEventType++;
 325 }
 326
 327 // ----------------------------------------------------------------------------
 328 // wxEvent
 329 // ----------------------------------------------------------------------------
 330
 331 /*
 332  * General wxWidgets events, covering
 333  * all interesting things that might happen (button clicking, resizing,
 334  * setting text in widgets, etc.).
 335  *
 336  * For each completely new event type, derive a new event class.
 337  *
 338  */
 339
 340 wxEvent::wxEvent(int theId, wxEventType commandType )
 341 {
 342     m_eventType = commandType;
 343     m_eventObject = (wxObject *) NULL;
 344     m_timeStamp = 0;
 345     m_id = theId;
 346     m_skipped = false;
 347     m_callbackUserData = (wxObject *) NULL;
 348     m_isCommandEvent = false;
 349     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 350 }
 351
 352 wxEvent::wxEvent(const wxEvent &src)
 353     : wxObject()
 354     , m_eventObject(src.m_eventObject)
 355     , m_eventType(src.m_eventType)
 356     , m_timeStamp(src.m_timeStamp)
 357     , m_id(src.m_id)
 358     , m_callbackUserData(src.m_callbackUserData)
 359     , m_propagationLevel(src.m_propagationLevel)
 360     , m_skipped(src.m_skipped)
 361     , m_isCommandEvent(src.m_isCommandEvent)
 362 {
 363 }
 364
 365 #endif // wxUSE_BASE
 366
 367 #if wxUSE_GUI
 368
 369 /*
 370  * Command events
 371  *
 372  */
 373
 374 #ifdef __VISUALC__
 375     // 'this' : used in base member initializer list (for m_commandString)
 376     #pragma warning(disable:4355)
 377 #endif
 378
 379 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 380               : wxEvent(theId, commandType)
 381 #if WXWIN_COMPATIBILITY_2_4
 382               , m_commandString(this)
 383 #endif
 384 {
 385     m_clientData = (char *) NULL;
 386     m_clientObject = (wxClientData *) NULL;
 387     m_extraLong = 0;
 388     m_commandInt = 0;
 389     m_isCommandEvent = true;
 390
 391     // the command events are propagated upwards by default
 392     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 393 }
 394
 395 #ifdef __VISUALC__
 396     #pragma warning(default:4355)
 397 #endif
 398
 399 wxString wxCommandEvent::GetString() const
 400 {
 401     if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 402         return m_cmdString;
 403     else
 404     {
 405 #if wxUSE_TEXTCTRL
 406         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 407         if(txt)
 408             return txt->GetValue();
 409         else
 410 #endif // wxUSE_TEXTCTRL
 411             return m_cmdString;
 412     }
 413 }
 414
 415 /*
 416  * UI update events
 417  */
 418
 419 #if wxUSE_LONGLONG
 420 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 421 #endif
 422
 423 long wxUpdateUIEvent::sm_updateInterval = 0;
 424
 425 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 426
 427 // Can we update?
 428 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 429 {
 430     // Don't update if we've switched global updating off
 431     // and this window doesn't support updates.
 432     if (win &&
 433        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 434        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 435         return false;
 436
 437     if (sm_updateInterval == -1)
 438         return false;
 439
 440     if (sm_updateInterval == 0)
 441         return true;
 442
 443 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 444     wxLongLong now = wxGetLocalTimeMillis();
 445     if (now > (sm_lastUpdate + sm_updateInterval))
 446     {
 447         return true;
 448     }
 449
 450     return false;
 451 #else
 452     // If we don't have wxStopWatch or wxLongLong, we
 453     // should err on the safe side and update now anyway.
 454     return true;
 455 #endif
 456 }
 457
 458 // Reset the update time to provide a delay until the next
 459 // time we should update
 460 void wxUpdateUIEvent::ResetUpdateTime()
 461 {
 462 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 463     if (sm_updateInterval > 0)
 464     {
 465         wxLongLong now = wxGetLocalTimeMillis();
 466         if (now > (sm_lastUpdate + sm_updateInterval))
 467         {
 468             sm_lastUpdate = now;
 469         }
 470     }
 471 #endif
 472 }
 473
 474 /*
 475  * Idle events
 476  */
 477
 478 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 479
 480 // Can we send an idle event?
 481 bool wxIdleEvent::CanSend(wxWindow* win)
 482 {
 483     // Don't update if we've switched global updating off
 484     // and this window doesn't support updates.
 485     if (win &&
 486        (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
 487        ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
 488         return false;
 489
 490     return true;
 491 }
 492
 493 /*
 494  * Scroll events
 495  */
 496
 497 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 498                              int id,
 499                              int pos,
 500                              int orient)
 501     : wxCommandEvent(commandType, id)
 502 {
 503     m_extraLong = orient;
 504     m_commandInt = pos;
 505 }
 506
 507 /*
 508  * ScrollWin events
 509  */
 510
 511 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 512                                    int pos,
 513                                    int orient)
 514 {
 515     m_eventType = commandType;
 516     m_extraLong = orient;
 517     m_commandInt = pos;
 518 }
 519
 520 /*
 521  * Mouse events
 522  *
 523  */
 524
 525 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 526 {
 527     m_eventType = commandType;
 528     m_metaDown = false;
 529     m_altDown = false;
 530     m_controlDown = false;
 531     m_shiftDown = false;
 532     m_leftDown = false;
 533     m_rightDown = false;
 534     m_middleDown = false;
 535     m_x = 0;
 536     m_y = 0;
 537     m_wheelRotation = 0;
 538     m_wheelDelta = 0;
 539     m_linesPerAction = 0;
 540 }
 541
 542 void wxMouseEvent::Assign(const wxMouseEvent& event)
 543 {
 544     m_eventType = event.m_eventType;
 545
 546     m_x = event.m_x;
 547     m_y = event.m_y;
 548
 549     m_leftDown = event.m_leftDown;
 550     m_middleDown = event.m_middleDown;
 551     m_rightDown = event.m_rightDown;
 552
 553     m_controlDown = event.m_controlDown;
 554     m_shiftDown = event.m_shiftDown;
 555     m_altDown = event.m_altDown;
 556     m_metaDown = event.m_metaDown;
 557
 558     m_wheelRotation = event.m_wheelRotation;
 559     m_wheelDelta = event.m_wheelDelta;
 560     m_linesPerAction = event.m_linesPerAction;
 561 }
 562
 563 // return true if was a button dclick event
 564 bool wxMouseEvent::ButtonDClick(int but) const
 565 {
 566     switch (but)
 567     {
 568         default:
 569             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 570             // fall through
 571
 572         case wxMOUSE_BTN_ANY:
 573             return (LeftDClick() || MiddleDClick() || RightDClick());
 574
 575         case wxMOUSE_BTN_LEFT:
 576             return LeftDClick();
 577
 578         case wxMOUSE_BTN_MIDDLE:
 579             return MiddleDClick();
 580
 581         case wxMOUSE_BTN_RIGHT:
 582             return RightDClick();
 583     }
 584 }
 585
 586 // return true if was a button down event
 587 bool wxMouseEvent::ButtonDown(int but) const
 588 {
 589     switch (but)
 590     {
 591         default:
 592             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 593             // fall through
 594
 595         case wxMOUSE_BTN_ANY:
 596             return (LeftDown() || MiddleDown() || RightDown());
 597
 598         case wxMOUSE_BTN_LEFT:
 599             return LeftDown();
 600
 601         case wxMOUSE_BTN_MIDDLE:
 602             return MiddleDown();
 603
 604         case wxMOUSE_BTN_RIGHT:
 605             return RightDown();
 606     }
 607 }
 608
 609 // return true if was a button up event
 610 bool wxMouseEvent::ButtonUp(int but) const
 611 {
 612     switch (but)
 613     {
 614         default:
 615             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 616             // fall through
 617
 618         case wxMOUSE_BTN_ANY:
 619             return (LeftUp() || MiddleUp() || RightUp());
 620
 621         case wxMOUSE_BTN_LEFT:
 622             return LeftUp();
 623
 624         case wxMOUSE_BTN_MIDDLE:
 625             return MiddleUp();
 626
 627         case wxMOUSE_BTN_RIGHT:
 628             return RightUp();
 629     }
 630 }
 631
 632 // return true if the given button is currently changing state
 633 bool wxMouseEvent::Button(int but) const
 634 {
 635     switch (but)
 636     {
 637         default:
 638             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 639             // fall through
 640
 641         case wxMOUSE_BTN_ANY:
 642             return ButtonUp(wxMOUSE_BTN_ANY) ||
 643                     ButtonDown(wxMOUSE_BTN_ANY) ||
 644                         ButtonDClick(wxMOUSE_BTN_ANY);
 645
 646         case wxMOUSE_BTN_LEFT:
 647             return LeftDown() || LeftUp() || LeftDClick();
 648
 649         case wxMOUSE_BTN_MIDDLE:
 650             return MiddleDown() || MiddleUp() || MiddleDClick();
 651
 652         case wxMOUSE_BTN_RIGHT:
 653             return RightDown() || RightUp() || RightDClick();
 654     }
 655 }
 656
 657 bool wxMouseEvent::ButtonIsDown(int but) const
 658 {
 659     switch (but)
 660     {
 661         default:
 662             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 663             // fall through
 664
 665         case wxMOUSE_BTN_ANY:
 666             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 667
 668         case wxMOUSE_BTN_LEFT:
 669             return LeftIsDown();
 670
 671         case wxMOUSE_BTN_MIDDLE:
 672             return MiddleIsDown();
 673
 674         case wxMOUSE_BTN_RIGHT:
 675             return RightIsDown();
 676     }
 677 }
 678
 679 int wxMouseEvent::GetButton() const
 680 {
 681     for ( int i = 1; i <= 3; i++ )
 682     {
 683         if ( Button(i) )
 684         {
 685             return i;
 686         }
 687     }
 688
 689     return wxMOUSE_BTN_NONE;
 690 }
 691
 692 // Find the logical position of the event given the DC
 693 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 694 {
 695     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 696     return pt;
 697 }
 698
 699
 700 /*
 701  * Keyboard event
 702  *
 703  */
 704
 705 wxKeyEvent::wxKeyEvent(wxEventType type)
 706 {
 707     m_eventType = type;
 708     m_shiftDown = false;
 709     m_controlDown = false;
 710     m_metaDown = false;
 711     m_altDown = false;
 712     m_keyCode = 0;
 713     m_scanCode = 0;
 714 #if wxUSE_UNICODE
 715     m_uniChar = 0;
 716 #endif
 717 }
 718
 719 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 720     : wxEvent(evt)
 721 {
 722     m_x = evt.m_x;
 723     m_y = evt.m_y;
 724
 725     m_keyCode = evt.m_keyCode;
 726
 727     m_controlDown = evt.m_controlDown;
 728     m_shiftDown = evt.m_shiftDown;
 729     m_altDown = evt.m_altDown;
 730     m_metaDown = evt.m_metaDown;
 731     m_scanCode = evt.m_scanCode;
 732     m_rawCode = evt.m_rawCode;
 733     m_rawFlags = evt.m_rawFlags;
 734
 735 #if wxUSE_UNICODE
 736     m_uniChar = evt.m_uniChar;
 737 #endif
 738 }
 739
 740 long wxKeyEvent::KeyCode() const
 741 {
 742     return m_keyCode;
 743 }
 744
 745 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 746 {
 747     SetEventType(wxEVT_CREATE);
 748     SetEventObject(win);
 749 }
 750
 751 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 752 {
 753     SetEventType(wxEVT_DESTROY);
 754     SetEventObject(win);
 755 }
 756
 757 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 758                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 759 {
 760     SetEventObject(win);
 761 }
 762
 763 #endif // wxUSE_GUI
 764
 765
 766 #if wxUSE_BASE
 767
 768 // ----------------------------------------------------------------------------
 769 // wxEventHashTable
 770 // ----------------------------------------------------------------------------
 771
 772 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 773
 774 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 775
 776 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 777                 : m_table(table),
 778                   m_rebuildHash(true)
 779 {
 780     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 781
 782     m_next = sm_first;
 783     if (m_next)
 784         m_next->m_previous = this;
 785     sm_first = this;
 786 }
 787
 788 wxEventHashTable::~wxEventHashTable()
 789 {
 790     if (m_next)
 791         m_next->m_previous = m_previous;
 792     if (m_previous)
 793         m_previous->m_next = m_next;
 794     if (sm_first == this)
 795         sm_first = m_next;
 796
 797     Clear();
 798 }
 799
 800 void wxEventHashTable::Clear()
 801 {
 802     size_t i;
 803     for(i = 0; i < m_size; i++)
 804     {
 805         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 806         if (eTTnode)
 807         {
 808             delete eTTnode;
 809         }
 810     }
 811
 812     // Necessary in order to not invoke the
 813     // overloaded delete operator when statics are cleaned up
 814     if (m_eventTypeTable)
 815         delete[] m_eventTypeTable;
 816
 817     m_eventTypeTable = NULL;
 818     m_size = 0;
 819 }
 820
 821 // Clear all tables
 822 void wxEventHashTable::ClearAll()
 823 {
 824     wxEventHashTable* table = sm_first;
 825     while (table)
 826     {
 827         table->Clear();
 828         table = table->m_next;
 829     }
 830 }
 831
 832 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 833 {
 834     if (m_rebuildHash)
 835     {
 836         InitHashTable();
 837         m_rebuildHash = false;
 838     }
 839
 840     if (!m_eventTypeTable)
 841         return false;
 842
 843     // Find all entries for the given event type.
 844     wxEventType eventType = event.GetEventType();
 845     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 846     if (eTTnode && eTTnode->eventType == eventType)
 847     {
 848         // Now start the search for an event handler
 849         // that can handle an event with the given ID.
 850         const wxEventTableEntryPointerArray&
 851             eventEntryTable = eTTnode->eventEntryTable;
 852
 853         const size_t count = eventEntryTable.GetCount();
 854         for (size_t n = 0; n < count; n++)
 855         {
 856             if ( wxEvtHandler::
 857                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 858             {
 859                 return true;
 860             }
 861         }
 862     }
 863
 864     return false;
 865 }
 866
 867 void wxEventHashTable::InitHashTable()
 868 {
 869     // Loop over the event tables and all its base tables.
 870     const wxEventTable *table = &m_table;
 871     while (table)
 872     {
 873         // Retrieve all valid event handler entries
 874         const wxEventTableEntry *entry = table->entries;
 875         while (entry->m_fn != 0)
 876         {
 877             // Add the event entry in the Hash.
 878             AddEntry(*entry);
 879
 880             entry++;
 881         }
 882
 883         table = table->baseTable;
 884     }
 885
 886     // Lets free some memory.
 887     size_t i;
 888     for(i = 0; i < m_size; i++)
 889     {
 890         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 891         if (eTTnode)
 892         {
 893             eTTnode->eventEntryTable.Shrink();
 894         }
 895     }
 896 }
 897
 898 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 899 {
 900     // This might happen 'accidentally' as the app is exiting
 901     if (!m_eventTypeTable)
 902         return;
 903
 904     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 905     EventTypeTablePointer  eTTnode = *peTTnode;
 906
 907     if (eTTnode)
 908     {
 909         if (eTTnode->eventType != entry.m_eventType)
 910         {
 911             // Resize the table!
 912             GrowEventTypeTable();
 913             // Try again to add it.
 914             AddEntry(entry);
 915             return;
 916         }
 917     }
 918     else
 919     {
 920         eTTnode = new EventTypeTable;
 921         eTTnode->eventType = entry.m_eventType;
 922         *peTTnode = eTTnode;
 923     }
 924
 925     // Fill all hash entries between entry.m_id and entry.m_lastId...
 926     eTTnode->eventEntryTable.Add(&entry);
 927 }
 928
 929 void wxEventHashTable::AllocEventTypeTable(size_t size)
 930 {
 931     m_eventTypeTable = new EventTypeTablePointer[size];
 932     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 933     m_size = size;
 934 }
 935
 936 void wxEventHashTable::GrowEventTypeTable()
 937 {
 938     size_t oldSize = m_size;
 939     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 940
 941     // TODO: Search the most optimal grow sequence
 942     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 943
 944     for ( size_t i = 0; i < oldSize; /* */ )
 945     {
 946         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 947         if (eTToldNode)
 948         {
 949             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 950             EventTypeTablePointer  eTTnode = *peTTnode;
 951
 952             // Check for collision, we don't want any.
 953             if (eTTnode)
 954             {
 955                 GrowEventTypeTable();
 956                 continue; // Don't increment the counter,
 957                           // as we still need to add this element.
 958             }
 959             else
 960             {
 961                 // Get the old value and put it in the new table.
 962                 *peTTnode = oldEventTypeTable[i];
 963             }
 964         }
 965
 966         i++;
 967     }
 968
 969     delete[] oldEventTypeTable;
 970 }
 971
 972
 973 // ----------------------------------------------------------------------------
 974 // wxEvtHandler
 975 // ----------------------------------------------------------------------------
 976
 977 /*
 978  * Event handler
 979  */
 980
 981 wxEvtHandler::wxEvtHandler()
 982 {
 983     m_nextHandler = (wxEvtHandler *) NULL;
 984     m_previousHandler = (wxEvtHandler *) NULL;
 985     m_enabled = true;
 986     m_dynamicEvents = (wxList *) NULL;
 987     m_pendingEvents = (wxList *) NULL;
 988 #if wxUSE_THREADS
 989 #  if !defined(__VISAGECPP__)
 990     m_eventsLocker = new wxCriticalSection;
 991 #  endif
 992 #endif
 993     // no client data (yet)
 994     m_clientData = NULL;
 995     m_clientDataType = wxClientData_None;
 996 }
 997
 998 wxEvtHandler::~wxEvtHandler()
 999 {
1000     // Takes itself out of the list of handlers
1001     if (m_previousHandler)
1002         m_previousHandler->m_nextHandler = m_nextHandler;
1003
1004     if (m_nextHandler)
1005         m_nextHandler->m_previousHandler = m_previousHandler;
1006
1007     if (m_dynamicEvents)
1008     {
1009         wxList::iterator it = m_dynamicEvents->begin(),
1010                          en = m_dynamicEvents->end();
1011         for (;it != en; ++it)
1012         {
1013 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1014             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1015 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1016             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1017 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1018
1019             if (entry->m_callbackUserData)
1020                 delete entry->m_callbackUserData;
1021             delete entry;
1022         }
1023         delete m_dynamicEvents;
1024     };
1025
1026     delete m_pendingEvents;
1027
1028 #if wxUSE_THREADS
1029 #  if !defined(__VISAGECPP__)
1030     delete m_eventsLocker;
1031 #  endif
1032
1033     // Remove us from wxPendingEvents if necessary.
1034     if(wxPendingEventsLocker)
1035         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1036     if ( wxPendingEvents )
1037     {
1038         // Delete all occurences of this from the list of pending events
1039         while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1040     }
1041     if(wxPendingEventsLocker)
1042         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1043 #endif
1044
1045     // we only delete object data, not untyped
1046     if ( m_clientDataType == wxClientData_Object )
1047         delete m_clientObject;
1048 }
1049
1050 #if wxUSE_THREADS
1051
1052 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1053 {
1054     // check that we are really in a child thread
1055     wxASSERT_MSG( !wxThread::IsMain(),
1056                   wxT("use ProcessEvent() in main thread") );
1057
1058     AddPendingEvent(event);
1059
1060     return true;
1061 }
1062
1063 void wxEvtHandler::ClearEventLocker()
1064 {
1065 #if !defined(__VISAGECPP__)
1066     delete m_eventsLocker;
1067     m_eventsLocker = NULL;
1068 #endif
1069 }
1070
1071 #endif // wxUSE_THREADS
1072
1073 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1074 {
1075     // 1) Add event to list of pending events of this event handler
1076
1077     wxEvent *eventCopy = event.Clone();
1078
1079     // we must be able to copy the events here so the event class must
1080     // implement Clone() properly instead of just providing a NULL stab for it
1081     wxCHECK_RET( eventCopy,
1082                  _T("events of this type aren't supposed to be posted") );
1083
1084     wxENTER_CRIT_SECT( Lock() );
1085
1086     if ( !m_pendingEvents )
1087     {
1088       m_pendingEvents = new wxList;
1089       m_pendingEvents->DeleteContents(true);
1090     }
1091
1092     m_pendingEvents->Append(eventCopy);
1093
1094     wxLEAVE_CRIT_SECT( Lock() );
1095
1096     // 2) Add this event handler to list of event handlers that
1097     //    have pending events.
1098
1099     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1100
1101     if ( !wxPendingEvents )
1102         wxPendingEvents = new wxList;
1103     wxPendingEvents->Append(this);
1104
1105     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1106
1107     // 3) Inform the system that new pending events are somwehere,
1108     //    and that these should be processed in idle time.
1109     wxWakeUpIdle();
1110 }
1111
1112 void wxEvtHandler::ProcessPendingEvents()
1113 {
1114     // this method is only called by wxApp if this handler does have pending
1115     // events
1116     wxCHECK_RET( m_pendingEvents,
1117                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1118
1119     wxENTER_CRIT_SECT( Lock() );
1120
1121     // we leave the loop once we have processed all events that were present at
1122     // the start of ProcessPendingEvents because otherwise we could get into
1123     // infinite loop if the pending event handler execution resulted in another
1124     // event being posted
1125     size_t n = m_pendingEvents->size();
1126     for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1127           node;
1128           node = m_pendingEvents->GetFirst() )
1129     {
1130         wxEvent *event = (wxEvent *)node->GetData();
1131
1132         wxLEAVE_CRIT_SECT( Lock() );
1133
1134         ProcessEvent(*event);
1135
1136         wxENTER_CRIT_SECT( Lock() );
1137
1138         m_pendingEvents->Erase(node);
1139
1140         if ( !--n )
1141             break;
1142     }
1143
1144     wxLEAVE_CRIT_SECT( Lock() );
1145 }
1146
1147 /*
1148  * Event table stuff
1149  */
1150 /* static */ bool
1151 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1152                                     wxEvtHandler *handler,
1153                                     wxEvent& event)
1154 {
1155     int tableId1 = entry.m_id,
1156         tableId2 = entry.m_lastId;
1157
1158     // match only if the event type is the same and the id is either -1 in
1159     // the event table (meaning "any") or the event id matches the id
1160     // specified in the event table either exactly or by falling into
1161     // range between first and last
1162     if ((tableId1 == wxID_ANY) ||
1163         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1164         (tableId2 != wxID_ANY &&
1165          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1166     {
1167         event.Skip(false);
1168         event.m_callbackUserData = entry.m_callbackUserData;
1169
1170 #if wxUSE_EXCEPTIONS
1171         if ( wxTheApp )
1172         {
1173             // call the handler via wxApp method which allows the user to catch
1174             // any exceptions which may be thrown by any handler in the program
1175             // in one place
1176             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1177         }
1178         else
1179 #endif // wxUSE_EXCEPTIONS
1180         {
1181             // no need for an extra virtual function call
1182             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1183         }
1184
1185         if (!event.GetSkipped())
1186             return true;
1187     }
1188
1189     return false;
1190 }
1191
1192 bool wxEvtHandler::TryParent(wxEvent& event)
1193 {
1194     if ( wxTheApp && (this != wxTheApp) )
1195     {
1196         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1197         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1198         // processed appropriately via SearchEventTable.
1199         if ( event.GetEventType() != wxEVT_IDLE )
1200         {
1201             if ( wxTheApp->ProcessEvent(event) )
1202                 return true;
1203         }
1204     }
1205
1206     return false;
1207 }
1208
1209 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1210 {
1211     // allow the application to hook into event processing
1212     if ( wxTheApp )
1213     {
1214         int rc = wxTheApp->FilterEvent(event);
1215         if ( rc != -1 )
1216         {
1217             wxASSERT_MSG( rc == 1 || rc == 0,
1218                           _T("unexpected wxApp::FilterEvent return value") );
1219
1220             return rc != 0;
1221         }
1222         //else: proceed normally
1223     }
1224
1225     // An event handler can be enabled or disabled
1226     if ( GetEvtHandlerEnabled() )
1227     {
1228         // if we have a validator, it has higher priority than our own event
1229         // table
1230         if ( TryValidator(event) )
1231             return true;
1232
1233         // Handle per-instance dynamic event tables first
1234         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1235             return true;
1236
1237         // Then static per-class event tables
1238         if ( GetEventHashTable().HandleEvent(event, this) )
1239             return true;
1240     }
1241
1242     // Try going down the event handler chain
1243     if ( GetNextHandler() )
1244     {
1245         if ( GetNextHandler()->ProcessEvent(event) )
1246             return true;
1247     }
1248
1249     // Finally propagate the event upwards the window chain and/or to the
1250     // application object as necessary
1251     return TryParent(event);
1252 }
1253
1254
1255 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1256 {
1257     const wxEventType eventType = event.GetEventType();
1258     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1259     {
1260         const wxEventTableEntry& entry = table.entries[i];
1261         if ( eventType == entry.m_eventType )
1262         {
1263             if ( ProcessEventIfMatches(entry, this, event) )
1264                 return true;
1265         }
1266     }
1267
1268     return false;
1269 }
1270
1271 void wxEvtHandler::Connect( int id, int lastId,
1272                             int eventType,
1273                             wxObjectEventFunction func,
1274                             wxObject *userData,
1275                             wxEvtHandler* eventSink )
1276 {
1277 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1278     wxEventTableEntry *entry = new wxEventTableEntry;
1279     entry->m_eventType = eventType;
1280     entry->m_id = id;
1281     entry->m_lastId = lastId;
1282     entry->m_fn = func;
1283     entry->m_callbackUserData = userData;
1284 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1285     wxDynamicEventTableEntry *entry =
1286         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1287 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1288
1289     if (!m_dynamicEvents)
1290         m_dynamicEvents = new wxList;
1291
1292     // Insert at the front of the list so most recent additions are found first
1293     m_dynamicEvents->Insert( (wxObject*) entry );
1294 }
1295
1296 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1297                   wxObjectEventFunction func,
1298                   wxObject *userData,
1299                   wxEvtHandler* eventSink )
1300 {
1301     if (!m_dynamicEvents)
1302         return false;
1303
1304     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1305     while (node)
1306     {
1307 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1308             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1309 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1310             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1311 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1312
1313         if ((entry->m_id == id) &&
1314             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1315             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1316             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1317             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1318             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1319         {
1320             if (entry->m_callbackUserData)
1321                 delete entry->m_callbackUserData;
1322             m_dynamicEvents->Erase( node );
1323             delete entry;
1324             return true;
1325         }
1326         node = node->GetNext();
1327     }
1328     return false;
1329 }
1330
1331 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1332 {
1333     wxCHECK_MSG( m_dynamicEvents, false,
1334                  wxT("caller should check that we have dynamic events") );
1335
1336     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1337     while (node)
1338     {
1339 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1340         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1341 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1342         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1343 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1344
1345         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1346         {
1347             wxEvtHandler *handler =
1348 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1349                                     entry->m_eventSink ? entry->m_eventSink
1350                                                        :
1351 #endif
1352                                                          this;
1353
1354             if ( ProcessEventIfMatches(*entry, handler, event) )
1355             {
1356                 return true;
1357             }
1358         }
1359
1360         node = node->GetNext();
1361     }
1362
1363     return false;
1364 }
1365
1366 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1367 {
1368     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1369                   wxT("can't have both object and void client data") );
1370
1371     if ( m_clientObject )
1372         delete m_clientObject;
1373
1374     m_clientObject = data;
1375     m_clientDataType = wxClientData_Object;
1376 }
1377
1378 wxClientData *wxEvtHandler::DoGetClientObject() const
1379 {
1380     // it's not an error to call GetClientObject() on a window which doesn't
1381     // have client data at all - NULL will be returned
1382     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1383                   wxT("this window doesn't have object client data") );
1384
1385     return m_clientObject;
1386 }
1387
1388 void wxEvtHandler::DoSetClientData( void *data )
1389 {
1390     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1391                   wxT("can't have both object and void client data") );
1392
1393     m_clientData = data;
1394     m_clientDataType = wxClientData_Void;
1395 }
1396
1397 void *wxEvtHandler::DoGetClientData() const
1398 {
1399     // it's not an error to call GetClientData() on a window which doesn't have
1400     // client data at all - NULL will be returned
1401     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1402                   wxT("this window doesn't have void client data") );
1403
1404     return m_clientData;
1405 }
1406
1407 #endif // wxUSE_BASE
1408
1409 #if wxUSE_GUI
1410
1411 // Find a window with the focus, that is also a descendant of the given window.
1412 // This is used to determine the window to initially send commands to.
1413 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1414 {
1415     // Process events starting with the window with the focus, if any.
1416     wxWindow* focusWin = wxWindow::FindFocus();
1417     wxWindow* win = focusWin;
1418
1419     // Check if this is a descendant of this frame.
1420     // If not, win will be set to NULL.
1421     while (win)
1422     {
1423         if (win == ancestor)
1424             break;
1425         else
1426             win = win->GetParent();
1427     }
1428     if (win == (wxWindow*) NULL)
1429         focusWin = (wxWindow*) NULL;
1430
1431     return focusWin;
1432 }
1433
1434 #endif // wxUSE_GUI