src/common/event.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/event.cpp
   3 // Purpose:     Event classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/event.h"
  28 #include "wx/evtloop.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/list.h"
  32     #include "wx/app.h"
  33     #include "wx/utils.h"
  34     #include "wx/stopwatch.h"
  35     #include "wx/module.h"
  36
  37     #if wxUSE_GUI
  38         #include "wx/window.h"
  39         #include "wx/control.h"
  40         #include "wx/dc.h"
  41         #include "wx/textctrl.h"
  42         #include "wx/validate.h"
  43     #endif // wxUSE_GUI
  44 #endif
  45
  46 #include "wx/thread.h"
  47
  48 #if wxUSE_BASE
  49     #include "wx/ptr_scpd.h"
  50
  51     wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
  52     wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
  53 #endif // wxUSE_BASE
  54
  55 // ----------------------------------------------------------------------------
  56 // wxWin macros
  57 // ----------------------------------------------------------------------------
  58
  59 #if wxUSE_BASE
  60     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  61     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  62     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  63 #endif // wxUSE_BASE
  64
  65 #if wxUSE_GUI
  66     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
 102 #endif // wxUSE_GUI
 103
 104 #if wxUSE_BASE
 105
 106 const wxEventTable *wxEvtHandler::GetEventTable() const
 107     { return &wxEvtHandler::sm_eventTable; }
 108
 109 const wxEventTable wxEvtHandler::sm_eventTable =
 110     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 111
 112 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 113     { return wxEvtHandler::sm_eventHashTable; }
 114
 115 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 116
 117 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 118     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 119
 120
 121 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
 122 // leaked, so we need to manually clean up all event tables before checking for
 123 // the memory leaks when using it, however this breaks re-initializing the
 124 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
 125 // event tables won't be rebuilt the next time, so disable this by default
 126 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 127
 128 class wxEventTableEntryModule: public wxModule
 129 {
 130 public:
 131     wxEventTableEntryModule() { }
 132     virtual bool OnInit() { return true; }
 133     virtual void OnExit() { wxEventHashTable::ClearAll(); }
 134
 135     DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 136 };
 137
 138 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 139
 140 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 141
 142 // ----------------------------------------------------------------------------
 143 // global variables
 144 // ----------------------------------------------------------------------------
 145
 146 // List containing event handlers with pending events (each handler can occur
 147 // at most once here)
 148 wxList *wxPendingEvents = NULL;
 149
 150 #if wxUSE_THREADS
 151     // protects wxPendingEvents list
 152     wxCriticalSection *wxPendingEventsLocker = NULL;
 153 #endif
 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 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 165
 166 #endif // wxUSE_BASE
 167
 168 #if wxUSE_GUI
 169
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED)
 187 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 188
 189 // Mouse event types
 190 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 191 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 192 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 193 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 194 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 195 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 196 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 197 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 198 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 199 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 200 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 201 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 202 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 203 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 204 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 205 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 206 DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
 207 DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
 208 DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
 209 DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
 210 DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
 211 DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
 212
 213 // Non-client mouse events
 214 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 215 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 216 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 217 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 218 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 219 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 220 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 221 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 222 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 223 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 224 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 225 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 226
 227 // Character input event type
 228 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 229 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 230 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 231 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 232 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 233 #if wxUSE_HOTKEY
 234 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 235 #endif
 236
 237 // Set cursor event
 238 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 239
 240 // wxScrollbar and wxSlider event identifiers
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 248 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 249 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 250
 251 // Scroll events from wxWindow
 252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 258 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 259 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 260
 261 // System events
 262 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 263 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 264 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 265 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 266 DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
 267 DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
 268 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 269 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 270 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 271 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 272 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 273 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 274 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 275 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 276 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 277 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 278 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 279 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 280 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
 281 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 282 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 283 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 284 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 285 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 286 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 287 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 288 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 289 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 290 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 291 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 292 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 293 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 294 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 295 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 296 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 297 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 298 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 299 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 300 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 301 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 302 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 303 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 304
 305 // Clipboard events
 306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
 307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
 308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
 309
 310 // Generic command events
 311 // Note: a click is a higher-level event than button down/up
 312 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 313 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 314 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 315 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 316 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 317 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 318 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 319
 320 // Help events
 321 DEFINE_EVENT_TYPE(wxEVT_HELP)
 322 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 323
 324 #endif // wxUSE_GUI
 325
 326 #if wxUSE_BASE
 327
 328 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 329
 330 // ============================================================================
 331 // implementation
 332 // ============================================================================
 333
 334 // ----------------------------------------------------------------------------
 335 // event initialization
 336 // ----------------------------------------------------------------------------
 337
 338 int wxNewEventType()
 339 {
 340     // MT-FIXME
 341     static int s_lastUsedEventType = wxEVT_FIRST;
 342
 343     return s_lastUsedEventType++;
 344 }
 345
 346 // ----------------------------------------------------------------------------
 347 // wxEvent
 348 // ----------------------------------------------------------------------------
 349
 350 /*
 351  * General wxWidgets events, covering
 352  * all interesting things that might happen (button clicking, resizing,
 353  * setting text in widgets, etc.).
 354  *
 355  * For each completely new event type, derive a new event class.
 356  *
 357  */
 358
 359 wxEvent::wxEvent(int theId, wxEventType commandType )
 360 {
 361     m_eventType = commandType;
 362     m_eventObject = (wxObject *) NULL;
 363     m_timeStamp = 0;
 364     m_id = theId;
 365     m_skipped = false;
 366     m_callbackUserData = (wxObject *) NULL;
 367     m_isCommandEvent = false;
 368     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 369 }
 370
 371 wxEvent::wxEvent(const wxEvent& src)
 372     : wxObject(src)
 373     , m_eventObject(src.m_eventObject)
 374     , m_eventType(src.m_eventType)
 375     , m_timeStamp(src.m_timeStamp)
 376     , m_id(src.m_id)
 377     , m_callbackUserData(src.m_callbackUserData)
 378     , m_propagationLevel(src.m_propagationLevel)
 379     , m_skipped(src.m_skipped)
 380     , m_isCommandEvent(src.m_isCommandEvent)
 381 {
 382 }
 383
 384 wxEvent& wxEvent::operator=(const wxEvent& src)
 385 {
 386     wxObject::operator=(src);
 387
 388     m_eventObject = src.m_eventObject;
 389     m_eventType = src.m_eventType;
 390     m_timeStamp = src.m_timeStamp;
 391     m_id = src.m_id;
 392     m_callbackUserData = src.m_callbackUserData;
 393     m_propagationLevel = src.m_propagationLevel;
 394     m_skipped = src.m_skipped;
 395     m_isCommandEvent = src.m_isCommandEvent;
 396
 397     return *this;
 398 }
 399
 400 #endif // wxUSE_BASE
 401
 402 #if wxUSE_GUI
 403
 404 /*
 405  * Command events
 406  *
 407  */
 408
 409 #ifdef __VISUALC__
 410     // 'this' : used in base member initializer list (for m_commandString)
 411     #pragma warning(disable:4355)
 412 #endif
 413
 414 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 415               : wxEvent(theId, commandType)
 416 {
 417     m_clientData = (char *) NULL;
 418     m_clientObject = (wxClientData *) NULL;
 419     m_extraLong = 0;
 420     m_commandInt = 0;
 421     m_isCommandEvent = true;
 422
 423     // the command events are propagated upwards by default
 424     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 425 }
 426
 427 #ifdef __VISUALC__
 428     #pragma warning(default:4355)
 429 #endif
 430
 431 wxString wxCommandEvent::GetString() const
 432 {
 433     if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 434     {
 435         return m_cmdString;
 436     }
 437     else
 438     {
 439 #if wxUSE_TEXTCTRL
 440         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 441         if ( txt )
 442             return txt->GetValue();
 443         else
 444 #endif // wxUSE_TEXTCTRL
 445             return m_cmdString;
 446     }
 447 }
 448
 449 /*
 450  * UI update events
 451  */
 452
 453 #if wxUSE_LONGLONG
 454 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 455 #endif
 456
 457 long wxUpdateUIEvent::sm_updateInterval = 0;
 458
 459 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 460
 461 // Can we update?
 462 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *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() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 468        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 469         return false;
 470
 471     if (sm_updateInterval == -1)
 472         return false;
 473
 474     if (sm_updateInterval == 0)
 475         return true;
 476
 477 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 478     wxLongLong now = wxGetLocalTimeMillis();
 479     if (now > (sm_lastUpdate + sm_updateInterval))
 480     {
 481         return true;
 482     }
 483
 484     return false;
 485 #else
 486     // If we don't have wxStopWatch or wxLongLong, we
 487     // should err on the safe side and update now anyway.
 488     return true;
 489 #endif
 490 }
 491
 492 // Reset the update time to provide a delay until the next
 493 // time we should update
 494 void wxUpdateUIEvent::ResetUpdateTime()
 495 {
 496 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 497     if (sm_updateInterval > 0)
 498     {
 499         wxLongLong now = wxGetLocalTimeMillis();
 500         if (now > (sm_lastUpdate + sm_updateInterval))
 501         {
 502             sm_lastUpdate = now;
 503         }
 504     }
 505 #endif
 506 }
 507
 508 /*
 509  * Scroll events
 510  */
 511
 512 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 513                              int id,
 514                              int pos,
 515                              int orient)
 516     : wxCommandEvent(commandType, id)
 517 {
 518     m_extraLong = orient;
 519     m_commandInt = pos;
 520 }
 521
 522 /*
 523  * ScrollWin events
 524  */
 525
 526 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 527                                    int pos,
 528                                    int orient)
 529 {
 530     m_eventType = commandType;
 531     m_extraLong = orient;
 532     m_commandInt = pos;
 533 }
 534
 535 /*
 536  * Mouse events
 537  *
 538  */
 539
 540 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 541 {
 542     m_eventType = commandType;
 543
 544     m_x = 0;
 545     m_y = 0;
 546
 547     m_leftDown = false;
 548     m_middleDown = false;
 549     m_rightDown = false;
 550     m_aux1Down = false;
 551     m_aux2Down = false;
 552
 553     m_clickCount = -1;
 554
 555     m_wheelRotation = 0;
 556     m_wheelDelta = 0;
 557     m_linesPerAction = 0;
 558     m_wheelAxis = 0;
 559 }
 560
 561 void wxMouseEvent::Assign(const wxMouseEvent& event)
 562 {
 563     wxEvent::operator=(event);
 564
 565     // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
 566     // defined operator=() so need to do it this way:
 567     *static_cast<wxMouseState *>(this) = event;
 568
 569     m_x = event.m_x;
 570     m_y = event.m_y;
 571
 572     m_leftDown = event.m_leftDown;
 573     m_middleDown = event.m_middleDown;
 574     m_rightDown = event.m_rightDown;
 575     m_aux1Down = event.m_aux1Down;
 576     m_aux2Down = event.m_aux2Down;
 577
 578     m_wheelRotation = event.m_wheelRotation;
 579     m_wheelDelta = event.m_wheelDelta;
 580     m_linesPerAction = event.m_linesPerAction;
 581     m_wheelAxis = event.m_wheelAxis;
 582 }
 583
 584 // return true if was a button dclick event
 585 bool wxMouseEvent::ButtonDClick(int but) const
 586 {
 587     switch (but)
 588     {
 589         default:
 590             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 591             // fall through
 592
 593         case wxMOUSE_BTN_ANY:
 594             return (LeftDClick() || MiddleDClick() || RightDClick() ||
 595                     Aux1DClick() || Aux2DClick());
 596
 597         case wxMOUSE_BTN_LEFT:
 598             return LeftDClick();
 599
 600         case wxMOUSE_BTN_MIDDLE:
 601             return MiddleDClick();
 602
 603         case wxMOUSE_BTN_RIGHT:
 604             return RightDClick();
 605
 606         case wxMOUSE_BTN_AUX1:
 607             return Aux1DClick();
 608
 609         case wxMOUSE_BTN_AUX2:
 610             return Aux2DClick();
 611     }
 612 }
 613
 614 // return true if was a button down event
 615 bool wxMouseEvent::ButtonDown(int but) const
 616 {
 617     switch (but)
 618     {
 619         default:
 620             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 621             // fall through
 622
 623         case wxMOUSE_BTN_ANY:
 624             return (LeftDown() || MiddleDown() || RightDown() ||
 625                     Aux1Down() || Aux2Down());
 626
 627         case wxMOUSE_BTN_LEFT:
 628             return LeftDown();
 629
 630         case wxMOUSE_BTN_MIDDLE:
 631             return MiddleDown();
 632
 633         case wxMOUSE_BTN_RIGHT:
 634             return RightDown();
 635
 636         case wxMOUSE_BTN_AUX1:
 637             return Aux1Down();
 638
 639         case wxMOUSE_BTN_AUX2:
 640             return Aux2Down();
 641     }
 642 }
 643
 644 // return true if was a button up event
 645 bool wxMouseEvent::ButtonUp(int but) const
 646 {
 647     switch (but)
 648     {
 649         default:
 650             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 651             // fall through
 652
 653         case wxMOUSE_BTN_ANY:
 654             return (LeftUp() || MiddleUp() || RightUp() ||
 655                     Aux1Up() || Aux2Up());
 656
 657         case wxMOUSE_BTN_LEFT:
 658             return LeftUp();
 659
 660         case wxMOUSE_BTN_MIDDLE:
 661             return MiddleUp();
 662
 663         case wxMOUSE_BTN_RIGHT:
 664             return RightUp();
 665
 666         case wxMOUSE_BTN_AUX1:
 667             return Aux1Up();
 668
 669         case wxMOUSE_BTN_AUX2:
 670             return Aux2Up();
 671     }
 672 }
 673
 674 // return true if the given button is currently changing state
 675 bool wxMouseEvent::Button(int but) const
 676 {
 677     switch (but)
 678     {
 679         default:
 680             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 681             // fall through
 682
 683         case wxMOUSE_BTN_ANY:
 684             return ButtonUp(wxMOUSE_BTN_ANY) ||
 685                     ButtonDown(wxMOUSE_BTN_ANY) ||
 686                         ButtonDClick(wxMOUSE_BTN_ANY);
 687
 688         case wxMOUSE_BTN_LEFT:
 689             return LeftDown() || LeftUp() || LeftDClick();
 690
 691         case wxMOUSE_BTN_MIDDLE:
 692             return MiddleDown() || MiddleUp() || MiddleDClick();
 693
 694         case wxMOUSE_BTN_RIGHT:
 695             return RightDown() || RightUp() || RightDClick();
 696
 697         case wxMOUSE_BTN_AUX1:
 698            return Aux1Down() || Aux1Up() || Aux1DClick();
 699
 700         case wxMOUSE_BTN_AUX2:
 701            return Aux2Down() || Aux2Up() || Aux2DClick();
 702     }
 703 }
 704
 705 bool wxMouseEvent::ButtonIsDown(int but) const
 706 {
 707     switch (but)
 708     {
 709         default:
 710             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 711             // fall through
 712
 713         case wxMOUSE_BTN_ANY:
 714             return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
 715
 716         case wxMOUSE_BTN_LEFT:
 717             return LeftIsDown();
 718
 719         case wxMOUSE_BTN_MIDDLE:
 720             return MiddleIsDown();
 721
 722         case wxMOUSE_BTN_RIGHT:
 723             return RightIsDown();
 724
 725         case wxMOUSE_BTN_AUX1:
 726             return Aux1IsDown();
 727
 728         case wxMOUSE_BTN_AUX2:
 729             return Aux2IsDown();
 730     }
 731 }
 732
 733 int wxMouseEvent::GetButton() const
 734 {
 735     for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
 736     {
 737         if ( Button(i) )
 738         {
 739             return i;
 740         }
 741     }
 742
 743     return wxMOUSE_BTN_NONE;
 744 }
 745
 746 // Find the logical position of the event given the DC
 747 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 748 {
 749     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 750     return pt;
 751 }
 752
 753
 754 /*
 755  * Keyboard event
 756  *
 757  */
 758
 759 wxKeyEvent::wxKeyEvent(wxEventType type)
 760 {
 761     m_eventType = type;
 762     m_keyCode = 0;
 763     m_scanCode = 0;
 764 #if wxUSE_UNICODE
 765     m_uniChar = 0;
 766 #endif
 767 }
 768
 769 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 770           : wxEvent(evt),
 771             wxKeyboardState(evt)
 772 {
 773     m_x = evt.m_x;
 774     m_y = evt.m_y;
 775
 776     m_keyCode = evt.m_keyCode;
 777
 778     m_scanCode = evt.m_scanCode;
 779     m_rawCode = evt.m_rawCode;
 780     m_rawFlags = evt.m_rawFlags;
 781
 782 #if wxUSE_UNICODE
 783     m_uniChar = evt.m_uniChar;
 784 #endif
 785 }
 786
 787 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 788 {
 789     SetEventType(wxEVT_CREATE);
 790     SetEventObject(win);
 791 }
 792
 793 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 794 {
 795     SetEventType(wxEVT_DESTROY);
 796     SetEventObject(win);
 797 }
 798
 799 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 800                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 801 {
 802     SetEventObject(win);
 803 }
 804
 805 // ----------------------------------------------------------------------------
 806 // wxHelpEvent
 807 // ----------------------------------------------------------------------------
 808
 809 /* static */
 810 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 811 {
 812     if ( origin == Origin_Unknown )
 813     {
 814         // assume that the event comes from the help button if it's not from
 815         // keyboard and that pressing F1 always results in the help event
 816         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 817     }
 818
 819     return origin;
 820 }
 821
 822 #endif // wxUSE_GUI
 823
 824
 825 #if wxUSE_BASE
 826
 827 // ----------------------------------------------------------------------------
 828 // wxEventHashTable
 829 // ----------------------------------------------------------------------------
 830
 831 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 832
 833 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 834
 835 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 836                 : m_table(table),
 837                   m_rebuildHash(true)
 838 {
 839     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 840
 841     m_next = sm_first;
 842     if (m_next)
 843         m_next->m_previous = this;
 844     sm_first = this;
 845 }
 846
 847 wxEventHashTable::~wxEventHashTable()
 848 {
 849     if (m_next)
 850         m_next->m_previous = m_previous;
 851     if (m_previous)
 852         m_previous->m_next = m_next;
 853     if (sm_first == this)
 854         sm_first = m_next;
 855
 856     Clear();
 857 }
 858
 859 void wxEventHashTable::Clear()
 860 {
 861     for ( size_t i = 0; i < m_size; i++ )
 862     {
 863         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 864         delete eTTnode;
 865     }
 866
 867     delete[] m_eventTypeTable;
 868     m_eventTypeTable = NULL;
 869
 870     m_size = 0;
 871 }
 872
 873 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 874
 875 // Clear all tables
 876 void wxEventHashTable::ClearAll()
 877 {
 878     wxEventHashTable* table = sm_first;
 879     while (table)
 880     {
 881         table->Clear();
 882         table = table->m_next;
 883     }
 884 }
 885
 886 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 887
 888 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 889 {
 890     if (m_rebuildHash)
 891     {
 892         InitHashTable();
 893         m_rebuildHash = false;
 894     }
 895
 896     if (!m_eventTypeTable)
 897         return false;
 898
 899     // Find all entries for the given event type.
 900     wxEventType eventType = event.GetEventType();
 901     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 902     if (eTTnode && eTTnode->eventType == eventType)
 903     {
 904         // Now start the search for an event handler
 905         // that can handle an event with the given ID.
 906         const wxEventTableEntryPointerArray&
 907             eventEntryTable = eTTnode->eventEntryTable;
 908
 909         const size_t count = eventEntryTable.GetCount();
 910         for (size_t n = 0; n < count; n++)
 911         {
 912             if ( wxEvtHandler::
 913                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 914             {
 915                 return true;
 916             }
 917         }
 918     }
 919
 920     return false;
 921 }
 922
 923 void wxEventHashTable::InitHashTable()
 924 {
 925     // Loop over the event tables and all its base tables.
 926     const wxEventTable *table = &m_table;
 927     while (table)
 928     {
 929         // Retrieve all valid event handler entries
 930         const wxEventTableEntry *entry = table->entries;
 931         while (entry->m_fn != 0)
 932         {
 933             // Add the event entry in the Hash.
 934             AddEntry(*entry);
 935
 936             entry++;
 937         }
 938
 939         table = table->baseTable;
 940     }
 941
 942     // Lets free some memory.
 943     size_t i;
 944     for(i = 0; i < m_size; i++)
 945     {
 946         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 947         if (eTTnode)
 948         {
 949             eTTnode->eventEntryTable.Shrink();
 950         }
 951     }
 952 }
 953
 954 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 955 {
 956     // This might happen 'accidentally' as the app is exiting
 957     if (!m_eventTypeTable)
 958         return;
 959
 960     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 961     EventTypeTablePointer  eTTnode = *peTTnode;
 962
 963     if (eTTnode)
 964     {
 965         if (eTTnode->eventType != entry.m_eventType)
 966         {
 967             // Resize the table!
 968             GrowEventTypeTable();
 969             // Try again to add it.
 970             AddEntry(entry);
 971             return;
 972         }
 973     }
 974     else
 975     {
 976         eTTnode = new EventTypeTable;
 977         eTTnode->eventType = entry.m_eventType;
 978         *peTTnode = eTTnode;
 979     }
 980
 981     // Fill all hash entries between entry.m_id and entry.m_lastId...
 982     eTTnode->eventEntryTable.Add(&entry);
 983 }
 984
 985 void wxEventHashTable::AllocEventTypeTable(size_t size)
 986 {
 987     m_eventTypeTable = new EventTypeTablePointer[size];
 988     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 989     m_size = size;
 990 }
 991
 992 void wxEventHashTable::GrowEventTypeTable()
 993 {
 994     size_t oldSize = m_size;
 995     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 996
 997     // TODO: Search the most optimal grow sequence
 998     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 999
1000     for ( size_t i = 0; i < oldSize; /* */ )
1001     {
1002         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
1003         if (eTToldNode)
1004         {
1005             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1006             EventTypeTablePointer  eTTnode = *peTTnode;
1007
1008             // Check for collision, we don't want any.
1009             if (eTTnode)
1010             {
1011                 GrowEventTypeTable();
1012                 continue; // Don't increment the counter,
1013                           // as we still need to add this element.
1014             }
1015             else
1016             {
1017                 // Get the old value and put it in the new table.
1018                 *peTTnode = oldEventTypeTable[i];
1019             }
1020         }
1021
1022         i++;
1023     }
1024
1025     delete[] oldEventTypeTable;
1026 }
1027
1028 // ----------------------------------------------------------------------------
1029 // wxEvtHandler
1030 // ----------------------------------------------------------------------------
1031
1032 /*
1033  * Event handler
1034  */
1035
1036 wxEvtHandler::wxEvtHandler()
1037 {
1038     m_nextHandler = (wxEvtHandler *) NULL;
1039     m_previousHandler = (wxEvtHandler *) NULL;
1040     m_enabled = true;
1041     m_dynamicEvents = (wxList *) NULL;
1042     m_pendingEvents = (wxList *) NULL;
1043
1044     // no client data (yet)
1045     m_clientData = NULL;
1046     m_clientDataType = wxClientData_None;
1047 }
1048
1049 wxEvtHandler::~wxEvtHandler()
1050 {
1051     // Takes itself out of the list of handlers
1052     if (m_previousHandler)
1053         m_previousHandler->m_nextHandler = m_nextHandler;
1054
1055     if (m_nextHandler)
1056         m_nextHandler->m_previousHandler = m_previousHandler;
1057
1058     if (m_dynamicEvents)
1059     {
1060         for ( wxList::iterator it = m_dynamicEvents->begin(),
1061                                end = m_dynamicEvents->end();
1062               it != end;
1063               ++it )
1064         {
1065             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1066
1067             // Remove ourselves from sink destructor notifications
1068             // (this has usually been been done, in wxTrackable destructor)
1069             wxEvtHandler *eventSink = entry->m_eventSink;
1070             if ( eventSink )
1071             {
1072                 wxEventConnectionRef * const
1073                     evtConnRef = FindRefInTrackerList(eventSink);
1074                 if ( evtConnRef )
1075                 {
1076                     eventSink->RemoveNode(evtConnRef);
1077                     delete evtConnRef;
1078                 }
1079             }
1080
1081             if (entry->m_callbackUserData)
1082                 delete entry->m_callbackUserData;
1083             delete entry;
1084         }
1085         delete m_dynamicEvents;
1086     };
1087
1088     if (m_pendingEvents)
1089         m_pendingEvents->DeleteContents(true);
1090     delete m_pendingEvents;
1091
1092     // Remove us from wxPendingEvents if necessary.
1093     if ( wxPendingEvents )
1094     {
1095 #if wxUSE_THREADS
1096         if (wxPendingEventsLocker)
1097             wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1098 #endif
1099
1100         if ( wxPendingEvents->DeleteObject(this) )
1101         {
1102             // check that we were present only once in the list
1103             wxASSERT_MSG( !wxPendingEvents->Find(this),
1104                           "Handler occurs twice in wxPendingEvents list" );
1105         }
1106         //else: we weren't in this list at all, it's ok
1107
1108 #if wxUSE_THREADS
1109         if (wxPendingEventsLocker)
1110             wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1111 #endif
1112     }
1113
1114     // we only delete object data, not untyped
1115     if ( m_clientDataType == wxClientData_Object )
1116         delete m_clientObject;
1117 }
1118
1119 #if wxUSE_THREADS
1120
1121 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1122 {
1123     // check that we are really in a child thread
1124     wxASSERT_MSG( !wxThread::IsMain(),
1125                   wxT("use ProcessEvent() in main thread") );
1126
1127     AddPendingEvent(event);
1128
1129     return true;
1130 }
1131
1132 #endif // wxUSE_THREADS
1133
1134 void wxEvtHandler::QueueEvent(wxEvent *event)
1135 {
1136     wxCHECK_RET( event, "NULL event can't be posted" );
1137
1138     // 1) Add this event to our list of pending events
1139     wxENTER_CRIT_SECT( m_pendingEventsLock );
1140
1141     if ( !m_pendingEvents )
1142       m_pendingEvents = new wxList;
1143
1144     m_pendingEvents->Append(event);
1145
1146     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1147
1148     // 2) Add this event handler to list of event handlers that
1149     //    have pending events.
1150
1151     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1152
1153     if ( !wxPendingEvents )
1154         wxPendingEvents = new wxList;
1155     if ( !wxPendingEvents->Find(this) )
1156         wxPendingEvents->Append(this);
1157
1158     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1159
1160     // 3) Inform the system that new pending events are somewhere,
1161     //    and that these should be processed in idle time.
1162     wxWakeUpIdle();
1163 }
1164
1165 void wxEvtHandler::ProcessPendingEvents()
1166 {
1167     wxENTER_CRIT_SECT( m_pendingEventsLock );
1168
1169     // this method is only called by wxApp if this handler does have
1170     // pending events
1171     wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1172                  "should have pending events if called" );
1173
1174     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1175     wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1176
1177     // it's important we remove event from list before processing it, else a
1178     // nested event loop, for example from a modal dialog, might process the
1179     // same event again.
1180     m_pendingEvents->Erase(node);
1181
1182     // if there are no more pending events left, we don't need to stay in this
1183     // list
1184     if ( m_pendingEvents->IsEmpty() )
1185     {
1186 #if wxUSE_THREADS
1187         if (wxPendingEventsLocker)
1188             wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1189 #endif
1190         wxPendingEvents->DeleteObject(this);
1191 #if wxUSE_THREADS
1192         if (wxPendingEventsLocker)
1193             wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1194 #endif
1195     }
1196
1197     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1198
1199     ProcessEvent(*event);
1200
1201     // careful: this object could have been deleted by the event handler
1202     // executed by the above ProcessEvent() call, so we can't access any fields
1203     // of this object any more
1204 }
1205
1206 /*
1207  * Event table stuff
1208  */
1209 /* static */ bool
1210 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1211                                     wxEvtHandler *handler,
1212                                     wxEvent& event)
1213 {
1214     int tableId1 = entry.m_id,
1215         tableId2 = entry.m_lastId;
1216
1217     // match only if the event type is the same and the id is either -1 in
1218     // the event table (meaning "any") or the event id matches the id
1219     // specified in the event table either exactly or by falling into
1220     // range between first and last
1221     if ((tableId1 == wxID_ANY) ||
1222         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1223         (tableId2 != wxID_ANY &&
1224          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1225     {
1226         event.Skip(false);
1227         event.m_callbackUserData = entry.m_callbackUserData;
1228
1229 #if wxUSE_EXCEPTIONS
1230         if ( wxTheApp )
1231         {
1232             // call the handler via wxApp method which allows the user to catch
1233             // any exceptions which may be thrown by any handler in the program
1234             // in one place
1235             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1236         }
1237         else
1238 #endif // wxUSE_EXCEPTIONS
1239         {
1240             // no need for an extra virtual function call
1241             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1242         }
1243
1244         if (!event.GetSkipped())
1245             return true;
1246     }
1247
1248     return false;
1249 }
1250
1251 bool wxEvtHandler::TryParent(wxEvent& event)
1252 {
1253     if ( GetNextHandler() )
1254     {
1255         // the next handler will pass it to wxTheApp if it doesn't process it,
1256         // so return from here to avoid doing it again
1257         return GetNextHandler()->TryParent(event);
1258     }
1259
1260     if ( wxTheApp && (this != wxTheApp) )
1261     {
1262         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1263         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1264         // processed appropriately via SearchEventTable.
1265         if ( event.GetEventType() != wxEVT_IDLE )
1266         {
1267             if ( wxTheApp->ProcessEvent(event) )
1268                 return true;
1269         }
1270     }
1271
1272     return false;
1273 }
1274
1275 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1276 {
1277     // allow the application to hook into event processing
1278     if ( wxTheApp )
1279     {
1280         int rc = wxTheApp->FilterEvent(event);
1281         if ( rc != -1 )
1282         {
1283             wxASSERT_MSG( rc == 1 || rc == 0,
1284                           _T("unexpected wxApp::FilterEvent return value") );
1285
1286             return rc != 0;
1287         }
1288         //else: proceed normally
1289     }
1290
1291     if ( ProcessEventHere(event) )
1292         return true;
1293
1294     // propagate the event upwards the window chain and/or to the application
1295     // object if it wasn't processed at this level
1296     return TryParent(event);
1297 }
1298
1299 bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1300 {
1301     // An event handler can be enabled or disabled
1302     if ( GetEvtHandlerEnabled() )
1303     {
1304         // if we have a validator, it has higher priority than our own event
1305         // table
1306         if ( TryValidator(event) )
1307             return true;
1308
1309         // Handle per-instance dynamic event tables first
1310         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1311             return true;
1312
1313         // Then static per-class event tables
1314         if ( GetEventHashTable().HandleEvent(event, this) )
1315             return true;
1316     }
1317
1318     // Try going down the event handler chain
1319     if ( GetNextHandler() && GetNextHandler()->ProcessEventHere(event) )
1320         return true;
1321
1322     // We don't have a handler for this event.
1323     return false;
1324 }
1325
1326 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1327 {
1328 #if wxUSE_EXCEPTIONS
1329     try
1330     {
1331 #endif
1332         return ProcessEvent(event);
1333 #if wxUSE_EXCEPTIONS
1334     }
1335     catch ( ... )
1336     {
1337         wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1338         try
1339         {
1340             if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1341             {
1342                 if ( loop )
1343                     loop->Exit();
1344             }
1345             //else: continue running current event loop
1346
1347             return false;
1348         }
1349         catch ( ... )
1350         {
1351             // OnExceptionInMainLoop() threw, possibly rethrowing the same
1352             // exception again: very good, but we still need Exit() to
1353             // be called
1354             if ( loop )
1355                 loop->Exit();
1356             throw;
1357         }
1358     }
1359 #endif // wxUSE_EXCEPTIONS
1360 }
1361
1362
1363 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1364 {
1365     const wxEventType eventType = event.GetEventType();
1366     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1367     {
1368         const wxEventTableEntry& entry = table.entries[i];
1369         if ( eventType == entry.m_eventType )
1370         {
1371             if ( ProcessEventIfMatches(entry, this, event) )
1372                 return true;
1373         }
1374     }
1375
1376     return false;
1377 }
1378
1379 void wxEvtHandler::Connect( int id, int lastId,
1380                             int eventType,
1381                             wxObjectEventFunction func,
1382                             wxObject *userData,
1383                             wxEvtHandler* eventSink )
1384 {
1385     wxDynamicEventTableEntry *entry =
1386         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1387
1388     if (!m_dynamicEvents)
1389         m_dynamicEvents = new wxList;
1390
1391     // Insert at the front of the list so most recent additions are found first
1392     m_dynamicEvents->Insert( (wxObject*) entry );
1393
1394     // Make sure we get to know when a sink is destroyed
1395     if ( eventSink && eventSink != this )
1396     {
1397         wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1398         if ( evtConnRef )
1399             evtConnRef->IncRef( );
1400         else
1401             new wxEventConnectionRef(this, eventSink);
1402     }
1403 }
1404
1405 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1406                   wxObjectEventFunction func,
1407                   wxObject *userData,
1408                   wxEvtHandler* eventSink )
1409 {
1410     if (!m_dynamicEvents)
1411         return false;
1412
1413     // Remove connection from tracker node (wxEventConnectionRef)
1414     if ( eventSink && eventSink != this )
1415     {
1416         wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1417         if ( evtConnRef )
1418             evtConnRef->DecRef();
1419     }
1420
1421     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1422     while (node)
1423     {
1424         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1425
1426         if ((entry->m_id == id) &&
1427             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1428             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1429             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1430             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1431             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1432         {
1433             if (entry->m_callbackUserData)
1434                 delete entry->m_callbackUserData;
1435             m_dynamicEvents->Erase( node );
1436             delete entry;
1437             return true;
1438         }
1439         node = node->GetNext();
1440     }
1441     return false;
1442 }
1443
1444 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1445 {
1446     wxCHECK_MSG( m_dynamicEvents, false,
1447                  wxT("caller should check that we have dynamic events") );
1448
1449     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1450     while (node)
1451     {
1452         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1453
1454         // get next node before (maybe) calling the event handler as it could
1455         // call Disconnect() invalidating the current node
1456         node = node->GetNext();
1457
1458         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1459         {
1460             wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1461                                                        : this;
1462             if ( ProcessEventIfMatches(*entry, handler, event) )
1463                 return true;
1464         }
1465     }
1466
1467     return false;
1468 }
1469
1470 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1471 {
1472     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1473                   wxT("can't have both object and void client data") );
1474
1475     if ( m_clientObject )
1476         delete m_clientObject;
1477
1478     m_clientObject = data;
1479     m_clientDataType = wxClientData_Object;
1480 }
1481
1482 wxClientData *wxEvtHandler::DoGetClientObject() const
1483 {
1484     // it's not an error to call GetClientObject() on a window which doesn't
1485     // have client data at all - NULL will be returned
1486     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1487                   wxT("this window doesn't have object client data") );
1488
1489     return m_clientObject;
1490 }
1491
1492 void wxEvtHandler::DoSetClientData( void *data )
1493 {
1494     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1495                   wxT("can't have both object and void client data") );
1496
1497     m_clientData = data;
1498     m_clientDataType = wxClientData_Void;
1499 }
1500
1501 void *wxEvtHandler::DoGetClientData() const
1502 {
1503     // it's not an error to call GetClientData() on a window which doesn't have
1504     // client data at all - NULL will be returned
1505     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1506                   wxT("this window doesn't have void client data") );
1507
1508     return m_clientData;
1509 }
1510
1511 // A helper to find an wxEventConnectionRef object
1512 wxEventConnectionRef *
1513 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1514 {
1515     for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1516     {
1517         // we only want wxEventConnectionRef nodes here
1518         wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1519         if ( evtConnRef && evtConnRef->m_src == this )
1520         {
1521             wxASSERT( evtConnRef->m_sink==eventSink );
1522             return evtConnRef;
1523         }
1524     }
1525
1526     return NULL;
1527 }
1528
1529 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1530 {
1531     wxASSERT(m_dynamicEvents);
1532
1533     // remove all connections with this sink
1534     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1535     while (node)
1536     {
1537         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1538         node_nxt = node->GetNext();
1539
1540         if ( entry->m_eventSink==sink )
1541         {
1542             if (entry->m_callbackUserData)
1543                 delete entry->m_callbackUserData;
1544             m_dynamicEvents->Erase( node );
1545             delete entry;
1546         }
1547         node = node_nxt;
1548     }
1549 }
1550
1551 #endif // wxUSE_BASE
1552
1553 #if wxUSE_GUI
1554
1555 // Find a window with the focus, that is also a descendant of the given window.
1556 // This is used to determine the window to initially send commands to.
1557 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1558 {
1559     // Process events starting with the window with the focus, if any.
1560     wxWindow* focusWin = wxWindow::FindFocus();
1561     wxWindow* win = focusWin;
1562
1563     // Check if this is a descendant of this frame.
1564     // If not, win will be set to NULL.
1565     while (win)
1566     {
1567         if (win == ancestor)
1568             break;
1569         else
1570             win = win->GetParent();
1571     }
1572     if (win == (wxWindow*) NULL)
1573         focusWin = (wxWindow*) NULL;
1574
1575     return focusWin;
1576 }
1577
1578 // ----------------------------------------------------------------------------
1579 // wxEventBlocker
1580 // ----------------------------------------------------------------------------
1581
1582 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1583 {
1584     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1585
1586     m_window = win;
1587
1588     Block(type);
1589     m_window->PushEventHandler(this);
1590 }
1591
1592 wxEventBlocker::~wxEventBlocker()
1593 {
1594     wxEvtHandler *popped = m_window->PopEventHandler(false);
1595     wxCHECK_RET(popped == this,
1596         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1597 }
1598
1599 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1600 {
1601     // should this event be blocked?
1602     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1603     {
1604         wxEventType t = (wxEventType)m_eventsToBlock[i];
1605         if ( t == wxEVT_ANY || t == event.GetEventType() )
1606             return true;   // yes, it should: mark this event as processed
1607     }
1608
1609     return false;
1610 }
1611
1612 #endif // wxUSE_GUI