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
  29 #ifndef WX_PRECOMP
  30     #include "wx/list.h"
  31     #include "wx/app.h"
  32     #include "wx/utils.h"
  33     #include "wx/stopwatch.h"
  34     #include "wx/module.h"
  35
  36     #if wxUSE_GUI
  37         #include "wx/control.h"
  38         #include "wx/dc.h"
  39         #include "wx/textctrl.h"
  40         #include "wx/validate.h"
  41     #endif // wxUSE_GUI
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // wxWin macros
  46 // ----------------------------------------------------------------------------
  47
  48 #if wxUSE_BASE
  49     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  50     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  51     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  52 #endif // wxUSE_BASE
  53
  54 #if wxUSE_GUI
  55     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  56     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  57     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  58     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  59     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  60     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  61     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  62     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  63     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  64     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  65     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
  91 #endif // wxUSE_GUI
  92
  93 #if wxUSE_BASE
  94
  95 const wxEventTable *wxEvtHandler::GetEventTable() const
  96     { return &wxEvtHandler::sm_eventTable; }
  97
  98 const wxEventTable wxEvtHandler::sm_eventTable =
  99     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 100
 101 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 102     { return wxEvtHandler::sm_eventHashTable; }
 103
 104 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 105
 106 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 107     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 108
 109
 110 #ifdef __WXDEBUG__
 111 // Clear up event hash table contents or we can get problems
 112 // when C++ is cleaning up the static object
 113 class wxEventTableEntryModule: public wxModule
 114 {
 115 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 116 public:
 117     wxEventTableEntryModule() {}
 118     bool OnInit() { return true; }
 119     void OnExit()
 120     {
 121         wxEventHashTable::ClearAll();
 122     }
 123 };
 124 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 125 #endif
 126
 127 // ----------------------------------------------------------------------------
 128 // global variables
 129 // ----------------------------------------------------------------------------
 130
 131 // To put pending event handlers
 132 wxList *wxPendingEvents = (wxList *)NULL;
 133
 134 #if wxUSE_THREADS
 135     // protects wxPendingEvents list
 136     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 137 #endif
 138
 139 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 140
 141 // common event types are defined here, other event types are defined by the
 142 // components which use them
 143
 144 const wxEventType wxEVT_FIRST = 10000;
 145 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 146
 147 DEFINE_EVENT_TYPE(wxEVT_NULL)
 148 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 149 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 150 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 151
 152 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 153
 154 #endif // wxUSE_BASE
 155
 156 #if wxUSE_GUI
 157
 158 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 159
 160 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 161 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 162 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 177
 178 // Mouse event types
 179 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 180 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 181 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 182 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 183 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 184 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 185 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 186 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 187 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 188 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 189 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 190 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 191 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 192 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 193 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 194 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 195
 196 // Non-client mouse events
 197 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 198 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 199 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 200 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 201 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 202 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 203 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 204 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 205 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 206 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 207 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 208 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 209
 210 // Character input event type
 211 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 212 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 213 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 214 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 215 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 216 #if wxUSE_HOTKEY
 217 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 218 #endif
 219
 220 // Set cursor event
 221 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 222
 223 // wxScrollbar and wxSlider event identifiers
 224 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 225 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 226 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 227 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 228 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 233
 234 // Scroll events from wxWindow
 235 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 236 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 237 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 238 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 239 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 243
 244 // System events
 245 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 246 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 247 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 248 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 249 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 250 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 251 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 252 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 253 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 254 DEFINE_EVENT_TYPE(wxEVT_POWER)
 255 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 256 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 257 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 258 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 259 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 260 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 261 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 262 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
 263 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 264 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 265 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 266 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 267 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 268 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 269 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 270 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 271 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 272 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 273 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 274 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 275 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 276 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 277 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 278 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 279 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 280 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 281 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 282 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 283 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 284 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 285 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 286
 287 // Clipboard events
 288 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
 289 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
 290 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
 291
 292 // Generic command events
 293 // Note: a click is a higher-level event than button down/up
 294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 300 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 301
 302 // Help events
 303 DEFINE_EVENT_TYPE(wxEVT_HELP)
 304 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 305
 306 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 307
 308 #endif // wxUSE_GUI
 309
 310 #if wxUSE_BASE
 311
 312 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 313
 314 // ============================================================================
 315 // implementation
 316 // ============================================================================
 317
 318 // ----------------------------------------------------------------------------
 319 // event initialization
 320 // ----------------------------------------------------------------------------
 321
 322 int wxNewEventType()
 323 {
 324     // MT-FIXME
 325     static int s_lastUsedEventType = wxEVT_FIRST;
 326
 327     return s_lastUsedEventType++;
 328 }
 329
 330 // ----------------------------------------------------------------------------
 331 // wxEvent
 332 // ----------------------------------------------------------------------------
 333
 334 /*
 335  * General wxWidgets events, covering
 336  * all interesting things that might happen (button clicking, resizing,
 337  * setting text in widgets, etc.).
 338  *
 339  * For each completely new event type, derive a new event class.
 340  *
 341  */
 342
 343 wxEvent::wxEvent(int theId, wxEventType commandType )
 344 {
 345     m_eventType = commandType;
 346     m_eventObject = (wxObject *) NULL;
 347     m_timeStamp = 0;
 348     m_id = theId;
 349     m_skipped = false;
 350     m_callbackUserData = (wxObject *) NULL;
 351     m_isCommandEvent = false;
 352     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 353 }
 354
 355 wxEvent::wxEvent(const wxEvent &src)
 356     : wxObject(src)
 357     , m_eventObject(src.m_eventObject)
 358     , m_eventType(src.m_eventType)
 359     , m_timeStamp(src.m_timeStamp)
 360     , m_id(src.m_id)
 361     , m_callbackUserData(src.m_callbackUserData)
 362     , m_propagationLevel(src.m_propagationLevel)
 363     , m_skipped(src.m_skipped)
 364     , m_isCommandEvent(src.m_isCommandEvent)
 365 {
 366 }
 367
 368 #endif // wxUSE_BASE
 369
 370 #if wxUSE_GUI
 371
 372 /*
 373  * Command events
 374  *
 375  */
 376
 377 #ifdef __VISUALC__
 378     // 'this' : used in base member initializer list (for m_commandString)
 379     #pragma warning(disable:4355)
 380 #endif
 381
 382 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 383               : wxEvent(theId, commandType)
 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  * Scroll events
 476  */
 477
 478 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 479                              int id,
 480                              int pos,
 481                              int orient)
 482     : wxCommandEvent(commandType, id)
 483 {
 484     m_extraLong = orient;
 485     m_commandInt = pos;
 486 }
 487
 488 /*
 489  * ScrollWin events
 490  */
 491
 492 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 493                                    int pos,
 494                                    int orient)
 495 {
 496     m_eventType = commandType;
 497     m_extraLong = orient;
 498     m_commandInt = pos;
 499 }
 500
 501 /*
 502  * Mouse events
 503  *
 504  */
 505
 506 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 507 {
 508     m_eventType = commandType;
 509     m_metaDown = false;
 510     m_altDown = false;
 511     m_controlDown = false;
 512     m_shiftDown = false;
 513     m_leftDown = false;
 514     m_rightDown = false;
 515     m_middleDown = false;
 516     m_x = 0;
 517     m_y = 0;
 518     m_wheelRotation = 0;
 519     m_wheelDelta = 0;
 520     m_linesPerAction = 0;
 521     m_wheelAxis = 0;
 522 }
 523
 524 void wxMouseEvent::Assign(const wxMouseEvent& event)
 525 {
 526     m_eventType = event.m_eventType;
 527
 528     m_x = event.m_x;
 529     m_y = event.m_y;
 530
 531     m_leftDown = event.m_leftDown;
 532     m_middleDown = event.m_middleDown;
 533     m_rightDown = event.m_rightDown;
 534
 535     m_controlDown = event.m_controlDown;
 536     m_shiftDown = event.m_shiftDown;
 537     m_altDown = event.m_altDown;
 538     m_metaDown = event.m_metaDown;
 539
 540     m_wheelRotation = event.m_wheelRotation;
 541     m_wheelDelta = event.m_wheelDelta;
 542     m_linesPerAction = event.m_linesPerAction;
 543     m_wheelAxis = event.m_wheelAxis;
 544 }
 545
 546 // return true if was a button dclick event
 547 bool wxMouseEvent::ButtonDClick(int but) const
 548 {
 549     switch (but)
 550     {
 551         default:
 552             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 553             // fall through
 554
 555         case wxMOUSE_BTN_ANY:
 556             return (LeftDClick() || MiddleDClick() || RightDClick());
 557
 558         case wxMOUSE_BTN_LEFT:
 559             return LeftDClick();
 560
 561         case wxMOUSE_BTN_MIDDLE:
 562             return MiddleDClick();
 563
 564         case wxMOUSE_BTN_RIGHT:
 565             return RightDClick();
 566     }
 567 }
 568
 569 // return true if was a button down event
 570 bool wxMouseEvent::ButtonDown(int but) const
 571 {
 572     switch (but)
 573     {
 574         default:
 575             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 576             // fall through
 577
 578         case wxMOUSE_BTN_ANY:
 579             return (LeftDown() || MiddleDown() || RightDown());
 580
 581         case wxMOUSE_BTN_LEFT:
 582             return LeftDown();
 583
 584         case wxMOUSE_BTN_MIDDLE:
 585             return MiddleDown();
 586
 587         case wxMOUSE_BTN_RIGHT:
 588             return RightDown();
 589     }
 590 }
 591
 592 // return true if was a button up event
 593 bool wxMouseEvent::ButtonUp(int but) const
 594 {
 595     switch (but)
 596     {
 597         default:
 598             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 599             // fall through
 600
 601         case wxMOUSE_BTN_ANY:
 602             return (LeftUp() || MiddleUp() || RightUp());
 603
 604         case wxMOUSE_BTN_LEFT:
 605             return LeftUp();
 606
 607         case wxMOUSE_BTN_MIDDLE:
 608             return MiddleUp();
 609
 610         case wxMOUSE_BTN_RIGHT:
 611             return RightUp();
 612     }
 613 }
 614
 615 // return true if the given button is currently changing state
 616 bool wxMouseEvent::Button(int but) const
 617 {
 618     switch (but)
 619     {
 620         default:
 621             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 622             // fall through
 623
 624         case wxMOUSE_BTN_ANY:
 625             return ButtonUp(wxMOUSE_BTN_ANY) ||
 626                     ButtonDown(wxMOUSE_BTN_ANY) ||
 627                         ButtonDClick(wxMOUSE_BTN_ANY);
 628
 629         case wxMOUSE_BTN_LEFT:
 630             return LeftDown() || LeftUp() || LeftDClick();
 631
 632         case wxMOUSE_BTN_MIDDLE:
 633             return MiddleDown() || MiddleUp() || MiddleDClick();
 634
 635         case wxMOUSE_BTN_RIGHT:
 636             return RightDown() || RightUp() || RightDClick();
 637     }
 638 }
 639
 640 bool wxMouseEvent::ButtonIsDown(int but) const
 641 {
 642     switch (but)
 643     {
 644         default:
 645             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 646             // fall through
 647
 648         case wxMOUSE_BTN_ANY:
 649             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 650
 651         case wxMOUSE_BTN_LEFT:
 652             return LeftIsDown();
 653
 654         case wxMOUSE_BTN_MIDDLE:
 655             return MiddleIsDown();
 656
 657         case wxMOUSE_BTN_RIGHT:
 658             return RightIsDown();
 659     }
 660 }
 661
 662 int wxMouseEvent::GetButton() const
 663 {
 664     for ( int i = 1; i <= 3; i++ )
 665     {
 666         if ( Button(i) )
 667         {
 668             return i;
 669         }
 670     }
 671
 672     return wxMOUSE_BTN_NONE;
 673 }
 674
 675 // Find the logical position of the event given the DC
 676 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 677 {
 678     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 679     return pt;
 680 }
 681
 682
 683 /*
 684  * Keyboard event
 685  *
 686  */
 687
 688 wxKeyEvent::wxKeyEvent(wxEventType type)
 689 {
 690     m_eventType = type;
 691     m_shiftDown = false;
 692     m_controlDown = false;
 693     m_metaDown = false;
 694     m_altDown = false;
 695     m_keyCode = 0;
 696     m_scanCode = 0;
 697 #if wxUSE_UNICODE
 698     m_uniChar = 0;
 699 #endif
 700 }
 701
 702 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 703     : wxEvent(evt)
 704 {
 705     m_x = evt.m_x;
 706     m_y = evt.m_y;
 707
 708     m_keyCode = evt.m_keyCode;
 709
 710     m_controlDown = evt.m_controlDown;
 711     m_shiftDown = evt.m_shiftDown;
 712     m_altDown = evt.m_altDown;
 713     m_metaDown = evt.m_metaDown;
 714     m_scanCode = evt.m_scanCode;
 715     m_rawCode = evt.m_rawCode;
 716     m_rawFlags = evt.m_rawFlags;
 717
 718 #if wxUSE_UNICODE
 719     m_uniChar = evt.m_uniChar;
 720 #endif
 721 }
 722
 723 #if WXWIN_COMPATIBILITY_2_6
 724 long wxKeyEvent::KeyCode() const
 725 {
 726     return m_keyCode;
 727 }
 728 #endif // WXWIN_COMPATIBILITY_2_6
 729
 730 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 731 {
 732     SetEventType(wxEVT_CREATE);
 733     SetEventObject(win);
 734 }
 735
 736 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 737 {
 738     SetEventType(wxEVT_DESTROY);
 739     SetEventObject(win);
 740 }
 741
 742 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 743                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 744 {
 745     SetEventObject(win);
 746 }
 747
 748 // ----------------------------------------------------------------------------
 749 // wxHelpEvent
 750 // ----------------------------------------------------------------------------
 751
 752 /* static */
 753 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 754 {
 755     if ( origin == Origin_Unknown )
 756     {
 757         // assume that the event comes from the help button if it's not from
 758         // keyboard and that pressing F1 always results in the help event
 759         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 760     }
 761
 762     return origin;
 763 }
 764
 765 #endif // wxUSE_GUI
 766
 767
 768 #if wxUSE_BASE
 769
 770 // ----------------------------------------------------------------------------
 771 // wxEventHashTable
 772 // ----------------------------------------------------------------------------
 773
 774 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 775
 776 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 777
 778 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 779                 : m_table(table),
 780                   m_rebuildHash(true)
 781 {
 782     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 783
 784     m_next = sm_first;
 785     if (m_next)
 786         m_next->m_previous = this;
 787     sm_first = this;
 788 }
 789
 790 wxEventHashTable::~wxEventHashTable()
 791 {
 792     if (m_next)
 793         m_next->m_previous = m_previous;
 794     if (m_previous)
 795         m_previous->m_next = m_next;
 796     if (sm_first == this)
 797         sm_first = m_next;
 798
 799     Clear();
 800 }
 801
 802 void wxEventHashTable::Clear()
 803 {
 804     size_t i;
 805     for(i = 0; i < m_size; i++)
 806     {
 807         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 808         if (eTTnode)
 809         {
 810             delete eTTnode;
 811         }
 812     }
 813
 814     // Necessary in order to not invoke the
 815     // overloaded delete operator when statics are cleaned up
 816     if (m_eventTypeTable)
 817         delete[] m_eventTypeTable;
 818
 819     m_eventTypeTable = NULL;
 820     m_size = 0;
 821 }
 822
 823 // Clear all tables
 824 void wxEventHashTable::ClearAll()
 825 {
 826     wxEventHashTable* table = sm_first;
 827     while (table)
 828     {
 829         table->Clear();
 830         table = table->m_next;
 831     }
 832 }
 833
 834 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 835 {
 836     if (m_rebuildHash)
 837     {
 838         InitHashTable();
 839         m_rebuildHash = false;
 840     }
 841
 842     if (!m_eventTypeTable)
 843         return false;
 844
 845     // Find all entries for the given event type.
 846     wxEventType eventType = event.GetEventType();
 847     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 848     if (eTTnode && eTTnode->eventType == eventType)
 849     {
 850         // Now start the search for an event handler
 851         // that can handle an event with the given ID.
 852         const wxEventTableEntryPointerArray&
 853             eventEntryTable = eTTnode->eventEntryTable;
 854
 855         const size_t count = eventEntryTable.GetCount();
 856         for (size_t n = 0; n < count; n++)
 857         {
 858             if ( wxEvtHandler::
 859                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 860             {
 861                 return true;
 862             }
 863         }
 864     }
 865
 866     return false;
 867 }
 868
 869 void wxEventHashTable::InitHashTable()
 870 {
 871     // Loop over the event tables and all its base tables.
 872     const wxEventTable *table = &m_table;
 873     while (table)
 874     {
 875         // Retrieve all valid event handler entries
 876         const wxEventTableEntry *entry = table->entries;
 877         while (entry->m_fn != 0)
 878         {
 879             // Add the event entry in the Hash.
 880             AddEntry(*entry);
 881
 882             entry++;
 883         }
 884
 885         table = table->baseTable;
 886     }
 887
 888     // Lets free some memory.
 889     size_t i;
 890     for(i = 0; i < m_size; i++)
 891     {
 892         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 893         if (eTTnode)
 894         {
 895             eTTnode->eventEntryTable.Shrink();
 896         }
 897     }
 898 }
 899
 900 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 901 {
 902     // This might happen 'accidentally' as the app is exiting
 903     if (!m_eventTypeTable)
 904         return;
 905
 906     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 907     EventTypeTablePointer  eTTnode = *peTTnode;
 908
 909     if (eTTnode)
 910     {
 911         if (eTTnode->eventType != entry.m_eventType)
 912         {
 913             // Resize the table!
 914             GrowEventTypeTable();
 915             // Try again to add it.
 916             AddEntry(entry);
 917             return;
 918         }
 919     }
 920     else
 921     {
 922         eTTnode = new EventTypeTable;
 923         eTTnode->eventType = entry.m_eventType;
 924         *peTTnode = eTTnode;
 925     }
 926
 927     // Fill all hash entries between entry.m_id and entry.m_lastId...
 928     eTTnode->eventEntryTable.Add(&entry);
 929 }
 930
 931 void wxEventHashTable::AllocEventTypeTable(size_t size)
 932 {
 933     m_eventTypeTable = new EventTypeTablePointer[size];
 934     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 935     m_size = size;
 936 }
 937
 938 void wxEventHashTable::GrowEventTypeTable()
 939 {
 940     size_t oldSize = m_size;
 941     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 942
 943     // TODO: Search the most optimal grow sequence
 944     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 945
 946     for ( size_t i = 0; i < oldSize; /* */ )
 947     {
 948         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 949         if (eTToldNode)
 950         {
 951             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 952             EventTypeTablePointer  eTTnode = *peTTnode;
 953
 954             // Check for collision, we don't want any.
 955             if (eTTnode)
 956             {
 957                 GrowEventTypeTable();
 958                 continue; // Don't increment the counter,
 959                           // as we still need to add this element.
 960             }
 961             else
 962             {
 963                 // Get the old value and put it in the new table.
 964                 *peTTnode = oldEventTypeTable[i];
 965             }
 966         }
 967
 968         i++;
 969     }
 970
 971     delete[] oldEventTypeTable;
 972 }
 973
 974
 975 // ----------------------------------------------------------------------------
 976 // wxEvtHandler
 977 // ----------------------------------------------------------------------------
 978
 979 /*
 980  * Event handler
 981  */
 982
 983 wxEvtHandler::wxEvtHandler()
 984 {
 985     m_nextHandler = (wxEvtHandler *) NULL;
 986     m_previousHandler = (wxEvtHandler *) NULL;
 987     m_enabled = true;
 988     m_dynamicEvents = (wxList *) NULL;
 989     m_pendingEvents = (wxList *) NULL;
 990 #if wxUSE_THREADS
 991 #  if !defined(__VISAGECPP__)
 992     m_eventsLocker = new wxCriticalSection;
 993 #  endif
 994 #endif
 995
 996     // no client data (yet)
 997     m_clientData = NULL;
 998     m_clientDataType = wxClientData_None;
 999 }
1000
1001 wxEvtHandler::~wxEvtHandler()
1002 {
1003     // Takes itself out of the list of handlers
1004     if (m_previousHandler)
1005         m_previousHandler->m_nextHandler = m_nextHandler;
1006
1007     if (m_nextHandler)
1008         m_nextHandler->m_previousHandler = m_previousHandler;
1009
1010     if (m_dynamicEvents)
1011     {
1012         for ( wxList::iterator it = m_dynamicEvents->begin(),
1013                                end = m_dynamicEvents->end();
1014               it != end;
1015               ++it )
1016         {
1017 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1018             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1019 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1020             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1021 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1022
1023             if (entry->m_callbackUserData)
1024                 delete entry->m_callbackUserData;
1025             delete entry;
1026         }
1027         delete m_dynamicEvents;
1028     };
1029
1030     if (m_pendingEvents)
1031         m_pendingEvents->DeleteContents(true);
1032     delete m_pendingEvents;
1033
1034 #if wxUSE_THREADS
1035 #  if !defined(__VISAGECPP__)
1036     delete m_eventsLocker;
1037 #  endif
1038
1039     // Remove us from wxPendingEvents if necessary.
1040     if(wxPendingEventsLocker)
1041         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1042     if ( wxPendingEvents )
1043     {
1044         // Delete all occurences of this from the list of pending events
1045         while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1046     }
1047     if(wxPendingEventsLocker)
1048         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1049 #endif
1050
1051     // we only delete object data, not untyped
1052     if ( m_clientDataType == wxClientData_Object )
1053         delete m_clientObject;
1054 }
1055
1056 #if wxUSE_THREADS
1057
1058 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1059 {
1060     // check that we are really in a child thread
1061     wxASSERT_MSG( !wxThread::IsMain(),
1062                   wxT("use ProcessEvent() in main thread") );
1063
1064     AddPendingEvent(event);
1065
1066     return true;
1067 }
1068
1069 void wxEvtHandler::ClearEventLocker()
1070 {
1071 #if !defined(__VISAGECPP__)
1072     delete m_eventsLocker;
1073     m_eventsLocker = NULL;
1074 #endif
1075 }
1076
1077 #endif // wxUSE_THREADS
1078
1079 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1080 {
1081     // 1) Add event to list of pending events of this event handler
1082
1083     wxEvent *eventCopy = event.Clone();
1084
1085     // we must be able to copy the events here so the event class must
1086     // implement Clone() properly instead of just providing a NULL stab for it
1087     wxCHECK_RET( eventCopy,
1088                  _T("events of this type aren't supposed to be posted") );
1089
1090     wxENTER_CRIT_SECT( Lock() );
1091
1092     if ( !m_pendingEvents )
1093       m_pendingEvents = new wxList;
1094
1095     m_pendingEvents->Append(eventCopy);
1096
1097     wxLEAVE_CRIT_SECT( Lock() );
1098
1099     // 2) Add this event handler to list of event handlers that
1100     //    have pending events.
1101
1102     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1103
1104     if ( !wxPendingEvents )
1105         wxPendingEvents = new wxList;
1106     wxPendingEvents->Append(this);
1107
1108     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1109
1110     // 3) Inform the system that new pending events are somewhere,
1111     //    and that these should be processed in idle time.
1112     wxWakeUpIdle();
1113 }
1114
1115 void wxEvtHandler::ProcessPendingEvents()
1116 {
1117     // this method is only called by wxApp if this handler does have
1118     // pending events
1119     wxCHECK_RET( m_pendingEvents,
1120                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1121
1122     wxENTER_CRIT_SECT( Lock() );
1123
1124     // we leave the loop once we have processed all events that were present at
1125     // the start of ProcessPendingEvents because otherwise we could get into
1126     // infinite loop if the pending event handler execution resulted in another
1127     // event being posted
1128     size_t n = m_pendingEvents->size();
1129     for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1130           node;
1131           node = m_pendingEvents->GetFirst() )
1132     {
1133         wxEvent *event = (wxEvent *)node->GetData();
1134
1135         // It's importan we remove event from list before processing it.
1136         // Else a nested event loop, for example from a modal dialog, might
1137         // process the same event again.
1138
1139         m_pendingEvents->Erase(node);
1140
1141         wxLEAVE_CRIT_SECT( Lock() );
1142
1143         ProcessEvent(*event);
1144
1145         delete event;
1146
1147         wxENTER_CRIT_SECT( Lock() );
1148
1149         if ( --n == 0 )
1150             break;
1151     }
1152
1153     wxLEAVE_CRIT_SECT( Lock() );
1154 }
1155
1156 /*
1157  * Event table stuff
1158  */
1159 /* static */ bool
1160 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1161                                     wxEvtHandler *handler,
1162                                     wxEvent& event)
1163 {
1164     int tableId1 = entry.m_id,
1165         tableId2 = entry.m_lastId;
1166
1167     // match only if the event type is the same and the id is either -1 in
1168     // the event table (meaning "any") or the event id matches the id
1169     // specified in the event table either exactly or by falling into
1170     // range between first and last
1171     if ((tableId1 == wxID_ANY) ||
1172         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1173         (tableId2 != wxID_ANY &&
1174          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1175     {
1176         event.Skip(false);
1177         event.m_callbackUserData = entry.m_callbackUserData;
1178
1179 #if wxUSE_EXCEPTIONS
1180         if ( wxTheApp )
1181         {
1182             // call the handler via wxApp method which allows the user to catch
1183             // any exceptions which may be thrown by any handler in the program
1184             // in one place
1185             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1186         }
1187         else
1188 #endif // wxUSE_EXCEPTIONS
1189         {
1190             // no need for an extra virtual function call
1191             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1192         }
1193
1194         if (!event.GetSkipped())
1195             return true;
1196     }
1197
1198     return false;
1199 }
1200
1201 bool wxEvtHandler::TryParent(wxEvent& event)
1202 {
1203     if ( wxTheApp && (this != wxTheApp) )
1204     {
1205         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1206         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1207         // processed appropriately via SearchEventTable.
1208         if ( event.GetEventType() != wxEVT_IDLE )
1209         {
1210             if ( wxTheApp->ProcessEvent(event) )
1211                 return true;
1212         }
1213     }
1214
1215     return false;
1216 }
1217
1218 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1219 {
1220     // allow the application to hook into event processing
1221     if ( wxTheApp )
1222     {
1223         int rc = wxTheApp->FilterEvent(event);
1224         if ( rc != -1 )
1225         {
1226             wxASSERT_MSG( rc == 1 || rc == 0,
1227                           _T("unexpected wxApp::FilterEvent return value") );
1228
1229             return rc != 0;
1230         }
1231         //else: proceed normally
1232     }
1233
1234     // An event handler can be enabled or disabled
1235     if ( GetEvtHandlerEnabled() )
1236     {
1237         // if we have a validator, it has higher priority than our own event
1238         // table
1239         if ( TryValidator(event) )
1240             return true;
1241
1242         // Handle per-instance dynamic event tables first
1243         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1244             return true;
1245
1246         // Then static per-class event tables
1247         if ( GetEventHashTable().HandleEvent(event, this) )
1248             return true;
1249     }
1250
1251     // Try going down the event handler chain
1252     if ( GetNextHandler() )
1253     {
1254         if ( GetNextHandler()->ProcessEvent(event) )
1255             return true;
1256     }
1257
1258     // Finally propagate the event upwards the window chain and/or to the
1259     // application object as necessary
1260     return TryParent(event);
1261 }
1262
1263
1264 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1265 {
1266     const wxEventType eventType = event.GetEventType();
1267     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1268     {
1269         const wxEventTableEntry& entry = table.entries[i];
1270         if ( eventType == entry.m_eventType )
1271         {
1272             if ( ProcessEventIfMatches(entry, this, event) )
1273                 return true;
1274         }
1275     }
1276
1277     return false;
1278 }
1279
1280 void wxEvtHandler::Connect( int id, int lastId,
1281                             int eventType,
1282                             wxObjectEventFunction func,
1283                             wxObject *userData,
1284                             wxEvtHandler* eventSink )
1285 {
1286 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1287     wxEventTableEntry *entry = new wxEventTableEntry;
1288     entry->m_eventType = eventType;
1289     entry->m_id = id;
1290     entry->m_lastId = lastId;
1291     entry->m_fn = func;
1292     entry->m_callbackUserData = userData;
1293 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1294     wxDynamicEventTableEntry *entry =
1295         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1296 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1297
1298     if (!m_dynamicEvents)
1299         m_dynamicEvents = new wxList;
1300
1301     // Insert at the front of the list so most recent additions are found first
1302     m_dynamicEvents->Insert( (wxObject*) entry );
1303 }
1304
1305 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1306                   wxObjectEventFunction func,
1307                   wxObject *userData,
1308                   wxEvtHandler* eventSink )
1309 {
1310     if (!m_dynamicEvents)
1311         return false;
1312
1313     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1314     while (node)
1315     {
1316 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1317             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1318 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1319             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1320 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1321
1322         if ((entry->m_id == id) &&
1323             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1324             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1325             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1326             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1327             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1328         {
1329             if (entry->m_callbackUserData)
1330                 delete entry->m_callbackUserData;
1331             m_dynamicEvents->Erase( node );
1332             delete entry;
1333             return true;
1334         }
1335         node = node->GetNext();
1336     }
1337     return false;
1338 }
1339
1340 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1341 {
1342     wxCHECK_MSG( m_dynamicEvents, false,
1343                  wxT("caller should check that we have dynamic events") );
1344
1345     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1346     while (node)
1347     {
1348 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1349         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1350 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1351         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1352 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1353
1354         // get next node before (maybe) calling the event handler as it could
1355         // call Disconnect() invalidating the current node
1356         node = node->GetNext();
1357
1358         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1359         {
1360             wxEvtHandler *handler =
1361 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1362                                     entry->m_eventSink ? entry->m_eventSink
1363                                                        :
1364 #endif
1365                                                          this;
1366
1367             if ( ProcessEventIfMatches(*entry, handler, event) )
1368             {
1369                 return true;
1370             }
1371         }
1372     }
1373
1374     return false;
1375 }
1376
1377 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1378 {
1379     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1380                   wxT("can't have both object and void client data") );
1381
1382     if ( m_clientObject )
1383         delete m_clientObject;
1384
1385     m_clientObject = data;
1386     m_clientDataType = wxClientData_Object;
1387 }
1388
1389 wxClientData *wxEvtHandler::DoGetClientObject() const
1390 {
1391     // it's not an error to call GetClientObject() on a window which doesn't
1392     // have client data at all - NULL will be returned
1393     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1394                   wxT("this window doesn't have object client data") );
1395
1396     return m_clientObject;
1397 }
1398
1399 void wxEvtHandler::DoSetClientData( void *data )
1400 {
1401     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1402                   wxT("can't have both object and void client data") );
1403
1404     m_clientData = data;
1405     m_clientDataType = wxClientData_Void;
1406 }
1407
1408 void *wxEvtHandler::DoGetClientData() const
1409 {
1410     // it's not an error to call GetClientData() on a window which doesn't have
1411     // client data at all - NULL will be returned
1412     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1413                   wxT("this window doesn't have void client data") );
1414
1415     return m_clientData;
1416 }
1417
1418 #endif // wxUSE_BASE
1419
1420 #if wxUSE_GUI
1421
1422 // Find a window with the focus, that is also a descendant of the given window.
1423 // This is used to determine the window to initially send commands to.
1424 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1425 {
1426     // Process events starting with the window with the focus, if any.
1427     wxWindow* focusWin = wxWindow::FindFocus();
1428     wxWindow* win = focusWin;
1429
1430     // Check if this is a descendant of this frame.
1431     // If not, win will be set to NULL.
1432     while (win)
1433     {
1434         if (win == ancestor)
1435             break;
1436         else
1437             win = win->GetParent();
1438     }
1439     if (win == (wxWindow*) NULL)
1440         focusWin = (wxWindow*) NULL;
1441
1442     return focusWin;
1443 }
1444
1445 // ----------------------------------------------------------------------------
1446 // wxEventBlocker
1447 // ----------------------------------------------------------------------------
1448
1449 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1450 {
1451     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1452
1453     m_window = win;
1454
1455     Block(type);
1456     m_window->PushEventHandler(this);
1457 }
1458
1459 wxEventBlocker::~wxEventBlocker()
1460 {
1461     wxEvtHandler *popped = m_window->PopEventHandler(false);
1462     wxCHECK_RET(popped == this,
1463         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1464 }
1465
1466 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1467 {
1468     // should this event be blocked?
1469     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1470     {
1471         wxEventType t = (wxEventType)m_eventsToBlock[i];
1472         if ( t == wxEVT_ANY || t == event.GetEventType() )
1473             return true;   // yes, it should: mark this event as processed
1474     }
1475
1476     return false;
1477 }
1478
1479 #endif // wxUSE_GUI