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wxWidgets/src/common/event.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/common/event.cpp
// Purpose: Event classes
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/event.h"
#include "wx/evtloop.h"
#ifndef WX_PRECOMP
#include "wx/list.h"
#include "wx/log.h"
#include "wx/app.h"
#include "wx/utils.h"
#include "wx/stopwatch.h"
#include "wx/module.h"
#if wxUSE_GUI
#include "wx/window.h"
#include "wx/control.h"
#include "wx/dc.h"
#include "wx/spinbutt.h"
#include "wx/textctrl.h"
#include "wx/validate.h"
#endif // wxUSE_GUI
#endif
#include "wx/thread.h"
#if wxUSE_BASE
#include "wx/scopedptr.h"
wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
#endif // wxUSE_BASE
// ----------------------------------------------------------------------------
// wxWin macros
// ----------------------------------------------------------------------------
#if wxUSE_BASE
IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
#endif // wxUSE_BASE
#if wxUSE_GUI
IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
#endif // wxUSE_GUI
#if wxUSE_BASE
const wxEventTable *wxEvtHandler::GetEventTable() const
{ return &wxEvtHandler::sm_eventTable; }
const wxEventTable wxEvtHandler::sm_eventTable =
{ (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
wxEventHashTable &wxEvtHandler::GetEventHashTable() const
{ return wxEvtHandler::sm_eventHashTable; }
wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
{ DECLARE_EVENT_TABLE_TERMINATOR() };
// wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
// leaked, so we need to manually clean up all event tables before checking for
// the memory leaks when using it, however this breaks re-initializing the
// library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
// event tables won't be rebuilt the next time, so disable this by default
#if wxUSE_MEMORY_TRACING
class wxEventTableEntryModule: public wxModule
{
public:
wxEventTableEntryModule() { }
virtual bool OnInit() { return true; }
virtual void OnExit() { wxEventHashTable::ClearAll(); }
DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
};
IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
#endif // wxUSE_MEMORY_TRACING
// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------
// common event types are defined here, other event types are defined by the
// components which use them
const wxEventType wxEVT_FIRST = 10000;
const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
DEFINE_EVENT_TYPE(wxEVT_NULL)
wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
#endif // wxUSE_BASE
#if wxUSE_GUI
wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
// Mouse event types
wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent );
wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent );
wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent );
wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
// Character input event type
wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent );
#if wxUSE_HOTKEY
wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent );
#endif
// Set cursor event
wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent );
// wxScrollbar and wxSlider event identifiers
wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent );
wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent );
// Due to a bug in older wx versions, wxSpinEvents were being sent with type of
// wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But
// with the type-safe events in place, these event types are associated with
// wxScrollEvent. To allow handling of spin events, new event types have been
// defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility
// the spin event types are being initialized with the scroll event types.
#if wxUSE_SPINBTN
wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_UP, wxSpinEvent, wxEVT_SCROLL_LINEUP );
wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_DOWN, wxSpinEvent, wxEVT_SCROLL_LINEDOWN );
wxDEFINE_EVENT_ALIAS( wxEVT_SPIN, wxSpinEvent, wxEVT_SCROLL_THUMBTRACK );
#endif // wxUSE_SPINBTN
// Scroll events from wxWindow
wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent );
wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent );
// System events
wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent );
wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent );
wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent );
wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent );
wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent );
wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent );
wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent );
wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent );
wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent );
wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent );
wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent );
wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent );
wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent );
wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent );
wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent );
wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent );
wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent );
wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent );
wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent );
wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent );
wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent );
wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent );
wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent );
wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent );
wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent );
wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent );
wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent );
wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent );
wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent );
wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent );
wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent );
wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent );
wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent );
wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent );
wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent );
wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent );
wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent );
// Clipboard events
wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent );
// Generic command events
// Note: a click is a higher-level event than button down/up
wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent );
wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
// Help events
wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
// Thread event
wxDEFINE_EVENT( wxEVT_COMMAND_THREAD, wxThreadEvent );
#endif // wxUSE_GUI
#if wxUSE_BASE
wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// event initialization
// ----------------------------------------------------------------------------
int wxNewEventType()
{
// MT-FIXME
static int s_lastUsedEventType = wxEVT_FIRST;
return s_lastUsedEventType++;
}
// ----------------------------------------------------------------------------
// wxEventFunctor
// ----------------------------------------------------------------------------
wxEventFunctor::~wxEventFunctor()
{
}
// ----------------------------------------------------------------------------
// wxEvent
// ----------------------------------------------------------------------------
/*
* General wxWidgets events, covering all interesting things that might happen
* (button clicking, resizing, setting text in widgets, etc.).
*
* For each completely new event type, derive a new event class.
*
*/
wxEvent::wxEvent(int theId, wxEventType commandType)
{
m_eventType = commandType;
m_eventObject = NULL;
m_timeStamp = 0;
m_id = theId;
m_skipped = false;
m_callbackUserData = NULL;
m_isCommandEvent = false;
m_propagationLevel = wxEVENT_PROPAGATE_NONE;
m_wasProcessed = false;
}
wxEvent::wxEvent(const wxEvent& src)
: wxObject(src)
, m_eventObject(src.m_eventObject)
, m_eventType(src.m_eventType)
, m_timeStamp(src.m_timeStamp)
, m_id(src.m_id)
, m_callbackUserData(src.m_callbackUserData)
, m_propagationLevel(src.m_propagationLevel)
, m_skipped(src.m_skipped)
, m_isCommandEvent(src.m_isCommandEvent)
, m_wasProcessed(false)
{
}
wxEvent& wxEvent::operator=(const wxEvent& src)
{
wxObject::operator=(src);
m_eventObject = src.m_eventObject;
m_eventType = src.m_eventType;
m_timeStamp = src.m_timeStamp;
m_id = src.m_id;
m_callbackUserData = src.m_callbackUserData;
m_propagationLevel = src.m_propagationLevel;
m_skipped = src.m_skipped;
m_isCommandEvent = src.m_isCommandEvent;
// don't change m_wasProcessed
return *this;
}
#endif // wxUSE_BASE
#if wxUSE_GUI
// ----------------------------------------------------------------------------
// wxCommandEvent
// ----------------------------------------------------------------------------
#ifdef __VISUALC__
// 'this' : used in base member initializer list (for m_commandString)
#pragma warning(disable:4355)
#endif
wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
: wxEvent(theId, commandType)
{
m_clientData = NULL;
m_clientObject = NULL;
m_extraLong = 0;
m_commandInt = 0;
m_isCommandEvent = true;
// the command events are propagated upwards by default
m_propagationLevel = wxEVENT_PROPAGATE_MAX;
}
#ifdef __VISUALC__
#pragma warning(default:4355)
#endif
wxString wxCommandEvent::GetString() const
{
if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
{
return m_cmdString;
}
else
{
#if wxUSE_TEXTCTRL
wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
if ( txt )
return txt->GetValue();
else
#endif // wxUSE_TEXTCTRL
return m_cmdString;
}
}
// ----------------------------------------------------------------------------
// wxUpdateUIEvent
// ----------------------------------------------------------------------------
#if wxUSE_LONGLONG
wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
#endif
long wxUpdateUIEvent::sm_updateInterval = 0;
wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
// Can we update?
bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
{
// Don't update if we've switched global updating off
// and this window doesn't support updates.
if (win &&
(GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
return false;
if (sm_updateInterval == -1)
return false;
if (sm_updateInterval == 0)
return true;
#if wxUSE_STOPWATCH && wxUSE_LONGLONG
wxLongLong now = wxGetLocalTimeMillis();
if (now > (sm_lastUpdate + sm_updateInterval))
{
return true;
}
return false;
#else
// If we don't have wxStopWatch or wxLongLong, we
// should err on the safe side and update now anyway.
return true;
#endif
}
// Reset the update time to provide a delay until the next
// time we should update
void wxUpdateUIEvent::ResetUpdateTime()
{
#if wxUSE_STOPWATCH && wxUSE_LONGLONG
if (sm_updateInterval > 0)
{
wxLongLong now = wxGetLocalTimeMillis();
if (now > (sm_lastUpdate + sm_updateInterval))
{
sm_lastUpdate = now;
}
}
#endif
}
// ----------------------------------------------------------------------------
// wxScrollEvent
// ----------------------------------------------------------------------------
wxScrollEvent::wxScrollEvent(wxEventType commandType,
int id,
int pos,
int orient)
: wxCommandEvent(commandType, id)
{
m_extraLong = orient;
m_commandInt = pos;
}
// ----------------------------------------------------------------------------
// wxScrollWinEvent
// ----------------------------------------------------------------------------
wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
int pos,
int orient)
{
m_eventType = commandType;
m_extraLong = orient;
m_commandInt = pos;
}
// ----------------------------------------------------------------------------
// wxMouseEvent
// ----------------------------------------------------------------------------
wxMouseEvent::wxMouseEvent(wxEventType commandType)
{
m_eventType = commandType;
m_x = 0;
m_y = 0;
m_leftDown = false;
m_middleDown = false;
m_rightDown = false;
m_aux1Down = false;
m_aux2Down = false;
m_clickCount = -1;
m_wheelRotation = 0;
m_wheelDelta = 0;
m_linesPerAction = 0;
m_wheelAxis = 0;
}
void wxMouseEvent::Assign(const wxMouseEvent& event)
{
wxEvent::operator=(event);
// Borland C++ 5.82 doesn't compile an explicit call to an implicitly
// defined operator=() so need to do it this way:
*static_cast<wxMouseState *>(this) = event;
m_x = event.m_x;
m_y = event.m_y;
m_leftDown = event.m_leftDown;
m_middleDown = event.m_middleDown;
m_rightDown = event.m_rightDown;
m_aux1Down = event.m_aux1Down;
m_aux2Down = event.m_aux2Down;
m_wheelRotation = event.m_wheelRotation;
m_wheelDelta = event.m_wheelDelta;
m_linesPerAction = event.m_linesPerAction;
m_wheelAxis = event.m_wheelAxis;
}
// return true if was a button dclick event
bool wxMouseEvent::ButtonDClick(int but) const
{
switch (but)
{
default:
wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
// fall through
case wxMOUSE_BTN_ANY:
return (LeftDClick() || MiddleDClick() || RightDClick() ||
Aux1DClick() || Aux2DClick());
case wxMOUSE_BTN_LEFT:
return LeftDClick();
case wxMOUSE_BTN_MIDDLE:
return MiddleDClick();
case wxMOUSE_BTN_RIGHT:
return RightDClick();
case wxMOUSE_BTN_AUX1:
return Aux1DClick();
case wxMOUSE_BTN_AUX2:
return Aux2DClick();
}
}
// return true if was a button down event
bool wxMouseEvent::ButtonDown(int but) const
{
switch (but)
{
default:
wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
// fall through
case wxMOUSE_BTN_ANY:
return (LeftDown() || MiddleDown() || RightDown() ||
Aux1Down() || Aux2Down());
case wxMOUSE_BTN_LEFT:
return LeftDown();
case wxMOUSE_BTN_MIDDLE:
return MiddleDown();
case wxMOUSE_BTN_RIGHT:
return RightDown();
case wxMOUSE_BTN_AUX1:
return Aux1Down();
case wxMOUSE_BTN_AUX2:
return Aux2Down();
}
}
// return true if was a button up event
bool wxMouseEvent::ButtonUp(int but) const
{
switch (but)
{
default:
wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
// fall through
case wxMOUSE_BTN_ANY:
return (LeftUp() || MiddleUp() || RightUp() ||
Aux1Up() || Aux2Up());
case wxMOUSE_BTN_LEFT:
return LeftUp();
case wxMOUSE_BTN_MIDDLE:
return MiddleUp();
case wxMOUSE_BTN_RIGHT:
return RightUp();
case wxMOUSE_BTN_AUX1:
return Aux1Up();
case wxMOUSE_BTN_AUX2:
return Aux2Up();
}
}
// return true if the given button is currently changing state
bool wxMouseEvent::Button(int but) const
{
switch (but)
{
default:
wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
// fall through
case wxMOUSE_BTN_ANY:
return ButtonUp(wxMOUSE_BTN_ANY) ||
ButtonDown(wxMOUSE_BTN_ANY) ||
ButtonDClick(wxMOUSE_BTN_ANY);
case wxMOUSE_BTN_LEFT:
return LeftDown() || LeftUp() || LeftDClick();
case wxMOUSE_BTN_MIDDLE:
return MiddleDown() || MiddleUp() || MiddleDClick();
case wxMOUSE_BTN_RIGHT:
return RightDown() || RightUp() || RightDClick();
case wxMOUSE_BTN_AUX1:
return Aux1Down() || Aux1Up() || Aux1DClick();
case wxMOUSE_BTN_AUX2:
return Aux2Down() || Aux2Up() || Aux2DClick();
}
}
int wxMouseEvent::GetButton() const
{
for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
{
if ( Button(i) )
{
return i;
}
}
return wxMOUSE_BTN_NONE;
}
// Find the logical position of the event given the DC
wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
{
wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
return pt;
}
// ----------------------------------------------------------------------------
// wxKeyEvent
// ----------------------------------------------------------------------------
wxKeyEvent::wxKeyEvent(wxEventType type)
{
m_eventType = type;
m_keyCode = 0;
#if wxUSE_UNICODE
m_uniChar = 0;
#endif
}
wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
: wxEvent(evt),
wxKeyboardState(evt)
{
m_x = evt.m_x;
m_y = evt.m_y;
m_keyCode = evt.m_keyCode;
m_rawCode = evt.m_rawCode;
m_rawFlags = evt.m_rawFlags;
#if wxUSE_UNICODE
m_uniChar = evt.m_uniChar;
#endif
}
// ----------------------------------------------------------------------------
// wxWindowCreateEvent
// ----------------------------------------------------------------------------
wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
{
SetEventType(wxEVT_CREATE);
SetEventObject(win);
}
// ----------------------------------------------------------------------------
// wxWindowDestroyEvent
// ----------------------------------------------------------------------------
wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
{
SetEventType(wxEVT_DESTROY);
SetEventObject(win);
}
// ----------------------------------------------------------------------------
// wxChildFocusEvent
// ----------------------------------------------------------------------------
wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
: wxCommandEvent(wxEVT_CHILD_FOCUS)
{
SetEventObject(win);
}
// ----------------------------------------------------------------------------
// wxHelpEvent
// ----------------------------------------------------------------------------
/* static */
wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
{
if ( origin == Origin_Unknown )
{
// assume that the event comes from the help button if it's not from
// keyboard and that pressing F1 always results in the help event
origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
}
return origin;
}
#endif // wxUSE_GUI
#if wxUSE_BASE
// ----------------------------------------------------------------------------
// wxEventHashTable
// ----------------------------------------------------------------------------
static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
wxEventHashTable* wxEventHashTable::sm_first = NULL;
wxEventHashTable::wxEventHashTable(const wxEventTable &table)
: m_table(table),
m_rebuildHash(true)
{
AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
m_next = sm_first;
if (m_next)
m_next->m_previous = this;
sm_first = this;
}
wxEventHashTable::~wxEventHashTable()
{
if (m_next)
m_next->m_previous = m_previous;
if (m_previous)
m_previous->m_next = m_next;
if (sm_first == this)
sm_first = m_next;
Clear();
}
void wxEventHashTable::Clear()
{
for ( size_t i = 0; i < m_size; i++ )
{
EventTypeTablePointer eTTnode = m_eventTypeTable[i];
delete eTTnode;
}
delete[] m_eventTypeTable;
m_eventTypeTable = NULL;
m_size = 0;
}
#if wxUSE_MEMORY_TRACING
// Clear all tables
void wxEventHashTable::ClearAll()
{
wxEventHashTable* table = sm_first;
while (table)
{
table->Clear();
table = table->m_next;
}
}
#endif // wxUSE_MEMORY_TRACING
bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
{
if (m_rebuildHash)
{
InitHashTable();
m_rebuildHash = false;
}
if (!m_eventTypeTable)
return false;
// Find all entries for the given event type.
wxEventType eventType = event.GetEventType();
const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
if (eTTnode && eTTnode->eventType == eventType)
{
// Now start the search for an event handler
// that can handle an event with the given ID.
const wxEventTableEntryPointerArray&
eventEntryTable = eTTnode->eventEntryTable;
const size_t count = eventEntryTable.GetCount();
for (size_t n = 0; n < count; n++)
{
const wxEventTableEntry& entry = *eventEntryTable[n];
if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
return true;
}
}
return false;
}
void wxEventHashTable::InitHashTable()
{
// Loop over the event tables and all its base tables.
const wxEventTable *table = &m_table;
while (table)
{
// Retrieve all valid event handler entries
const wxEventTableEntry *entry = table->entries;
while (entry->m_fn != 0)
{
// Add the event entry in the Hash.
AddEntry(*entry);
entry++;
}
table = table->baseTable;
}
// Lets free some memory.
size_t i;
for(i = 0; i < m_size; i++)
{
EventTypeTablePointer eTTnode = m_eventTypeTable[i];
if (eTTnode)
{
eTTnode->eventEntryTable.Shrink();
}
}
}
void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
{
// This might happen 'accidentally' as the app is exiting
if (!m_eventTypeTable)
return;
EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
EventTypeTablePointer eTTnode = *peTTnode;
if (eTTnode)
{
if (eTTnode->eventType != entry.m_eventType)
{
// Resize the table!
GrowEventTypeTable();
// Try again to add it.
AddEntry(entry);
return;
}
}
else
{
eTTnode = new EventTypeTable;
eTTnode->eventType = entry.m_eventType;
*peTTnode = eTTnode;
}
// Fill all hash entries between entry.m_id and entry.m_lastId...
eTTnode->eventEntryTable.Add(&entry);
}
void wxEventHashTable::AllocEventTypeTable(size_t size)
{
m_eventTypeTable = new EventTypeTablePointer[size];
memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
m_size = size;
}
void wxEventHashTable::GrowEventTypeTable()
{
size_t oldSize = m_size;
EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
// TODO: Search the most optimal grow sequence
AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
for ( size_t i = 0; i < oldSize; /* */ )
{
EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
if (eTToldNode)
{
EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
EventTypeTablePointer eTTnode = *peTTnode;
// Check for collision, we don't want any.
if (eTTnode)
{
GrowEventTypeTable();
continue; // Don't increment the counter,
// as we still need to add this element.
}
else
{
// Get the old value and put it in the new table.
*peTTnode = oldEventTypeTable[i];
}
}
i++;
}
delete[] oldEventTypeTable;
}
// ----------------------------------------------------------------------------
// wxEvtHandler
// ----------------------------------------------------------------------------
wxEvtHandler::wxEvtHandler()
{
m_nextHandler = NULL;
m_previousHandler = NULL;
m_enabled = true;
m_dynamicEvents = NULL;
m_pendingEvents = NULL;
// no client data (yet)
m_clientData = NULL;
m_clientDataType = wxClientData_None;
}
wxEvtHandler::~wxEvtHandler()
{
Unlink();
if (m_dynamicEvents)
{
for ( wxList::iterator it = m_dynamicEvents->begin(),
end = m_dynamicEvents->end();
it != end;
++it )
{
wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
// Remove ourselves from sink destructor notifications
// (this has usually been done, in wxTrackable destructor)
wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
if ( eventSink )
{
wxEventConnectionRef * const
evtConnRef = FindRefInTrackerList(eventSink);
if ( evtConnRef )
{
eventSink->RemoveNode(evtConnRef);
delete evtConnRef;
}
}
delete entry->m_callbackUserData;
delete entry;
}
delete m_dynamicEvents;
}
// Remove us from the list of the pending events if necessary.
if (wxTheApp)
wxTheApp->RemovePendingEventHandler(this);
DeletePendingEvents();
// we only delete object data, not untyped
if ( m_clientDataType == wxClientData_Object )
delete m_clientObject;
}
void wxEvtHandler::Unlink()
{
// this event handler must take itself out of the chain of handlers:
if (m_previousHandler)
m_previousHandler->SetNextHandler(m_nextHandler);
if (m_nextHandler)
m_nextHandler->SetPreviousHandler(m_previousHandler);
m_nextHandler = NULL;
m_previousHandler = NULL;
}
bool wxEvtHandler::IsUnlinked() const
{
return m_previousHandler == NULL &&
m_nextHandler == NULL;
}
#if wxUSE_THREADS
bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
{
// check that we are really in a child thread
wxASSERT_MSG( !wxThread::IsMain(),
wxT("use ProcessEvent() in main thread") );
AddPendingEvent(event);
return true;
}
#endif // wxUSE_THREADS
void wxEvtHandler::QueueEvent(wxEvent *event)
{
wxCHECK_RET( event, "NULL event can't be posted" );
if (!wxTheApp)
{
// we need an event loop which manages the list of event handlers with
// pending events... cannot proceed without it!
wxLogDebug("No application object! Cannot queue this event!");
// anyway delete the given event to avoid memory leaks
delete event;
return;
}
// 1) Add this event to our list of pending events
wxENTER_CRIT_SECT( m_pendingEventsLock );
if ( !m_pendingEvents )
m_pendingEvents = new wxList;
m_pendingEvents->Append(event);
// 2) Add this event handler to list of event handlers that
// have pending events.
wxTheApp->AppendPendingEventHandler(this);
// only release m_pendingEventsLock now because otherwise there is a race
// condition as described in the ticket #9093: we could process the event
// just added to m_pendingEvents in our ProcessPendingEvents() below before
// we had time to append this pointer to wxHandlersWithPendingEvents list; thus
// breaking the invariant that a handler should be in the list iff it has
// any pending events to process
wxLEAVE_CRIT_SECT( m_pendingEventsLock );
// 3) Inform the system that new pending events are somewhere,
// and that these should be processed in idle time.
wxWakeUpIdle();
}
void wxEvtHandler::DeletePendingEvents()
{
if (m_pendingEvents)
m_pendingEvents->DeleteContents(true);
wxDELETE(m_pendingEvents);
}
void wxEvtHandler::ProcessPendingEvents()
{
if (!wxTheApp)
{
// we need an event loop which manages the list of event handlers with
// pending events... cannot proceed without it!
wxLogDebug("No application object! Cannot process pending events!");
return;
}
// we need to process only a single pending event in this call because
// each call to ProcessEvent() could result in the destruction of this
// same event handler (see the comment at the end of this function)
wxENTER_CRIT_SECT( m_pendingEventsLock );
// this method is only called by wxApp if this handler does have
// pending events
wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
"should have pending events if called" );
wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
wxEvent* pEvent = static_cast<wxEvent *>(node->GetData());
// find the first event which can be processed now:
wxEventLoopBase* evtLoop = wxEventLoopBase::GetActive();
if (evtLoop && evtLoop->IsYielding())
{
while (node && pEvent && !evtLoop->IsEventAllowedInsideYield(pEvent->GetEventCategory()))
{
node = node->GetNext();
pEvent = node ? static_cast<wxEvent *>(node->GetData()) : NULL;
}
if (!node)
{
// all our events are NOT processable now... signal this:
wxTheApp->DelayPendingEventHandler(this);
// see the comment at the beginning of evtloop.h header for the
// logic behind YieldFor() and behind DelayPendingEventHandler()
wxLEAVE_CRIT_SECT( m_pendingEventsLock );
return;
}
}
wxEventPtr event(pEvent);
// it's important we remove event from list before processing it, else a
// nested event loop, for example from a modal dialog, might process the
// same event again.
m_pendingEvents->Erase(node);
if ( m_pendingEvents->IsEmpty() )
{
// if there are no more pending events left, we don't need to
// stay in this list
wxTheApp->RemovePendingEventHandler(this);
}
wxLEAVE_CRIT_SECT( m_pendingEventsLock );
ProcessEvent(*event);
// careful: this object could have been deleted by the event handler
// executed by the above ProcessEvent() call, so we can't access any fields
// of this object any more
}
/* static */
bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
wxEvtHandler *handler,
wxEvent& event)
{
int tableId1 = entry.m_id,
tableId2 = entry.m_lastId;
// match only if the event type is the same and the id is either -1 in
// the event table (meaning "any") or the event id matches the id
// specified in the event table either exactly or by falling into
// range between first and last
if ((tableId1 == wxID_ANY) ||
(tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
(tableId2 != wxID_ANY &&
(event.GetId() >= tableId1 && event.GetId() <= tableId2)))
{
event.Skip(false);
event.m_callbackUserData = entry.m_callbackUserData;
#if wxUSE_EXCEPTIONS
if ( wxTheApp )
{
// call the handler via wxApp method which allows the user to catch
// any exceptions which may be thrown by any handler in the program
// in one place
wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
}
else
#endif // wxUSE_EXCEPTIONS
{
(*entry.m_fn)(handler, event);
}
if (!event.GetSkipped())
return true;
}
return false;
}
bool wxEvtHandler::DoTryApp(wxEvent& event)
{
if ( wxTheApp && (this != wxTheApp) )
{
// Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
// swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
// processed appropriately via SearchEventTable.
if ( event.GetEventType() != wxEVT_IDLE )
{
if ( wxTheApp->ProcessEvent(event) )
return true;
}
}
return false;
}
bool wxEvtHandler::TryBefore(wxEvent& event)
{
#if WXWIN_COMPATIBILITY_2_8
// call the old virtual function to keep the code overriding it working
return TryValidator(event);
#else
wxUnusedVar(event);
return false;
#endif
}
bool wxEvtHandler::TryAfter(wxEvent& event)
{
#if WXWIN_COMPATIBILITY_2_8
// as above, call the old virtual function for compatibility
return TryParent(event);
#else
return DoTryApp(event);
#endif
}
bool wxEvtHandler::ProcessEvent(wxEvent& event)
{
// allow the application to hook into event processing
//
// note that we should only do it if we're the first event handler called
// to avoid calling FilterEvent() multiple times as the event goes through
// the event handler chain and possibly upwards the window hierarchy
if ( !event.WasProcessed() )
{
if ( wxTheApp )
{
int rc = wxTheApp->FilterEvent(event);
if ( rc != -1 )
{
wxASSERT_MSG( rc == 1 || rc == 0,
"unexpected wxApp::FilterEvent return value" );
return rc != 0;
}
//else: proceed normally
}
}
if ( ProcessEventHere(event) )
return true;
// pass the event to the next handler, notice that we shouldn't call
// TryAfter() even if it doesn't handle the event as the last handler in
// the chain will do it
if ( GetNextHandler() )
return GetNextHandler()->ProcessEvent(event);
// propagate the event upwards the window chain and/or to the application
// object if it wasn't processed at this level
return TryAfter(event);
}
bool wxEvtHandler::ProcessEventHere(wxEvent& event)
{
// If the event handler is disabled it doesn't process any events
if ( !GetEvtHandlerEnabled() )
return false;
// Try the hooks which should be called before our own handlers
if ( TryBefore(event) )
return true;
// Handle per-instance dynamic event tables first
if ( m_dynamicEvents && SearchDynamicEventTable(event) )
return true;
// Then static per-class event tables
if ( GetEventHashTable().HandleEvent(event, this) )
return true;
// We don't have a handler for this event.
return false;
}
bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
{
#if wxUSE_EXCEPTIONS
try
{
#endif
return ProcessEvent(event);
#if wxUSE_EXCEPTIONS
}
catch ( ... )
{
// notice that we do it in 2 steps to avoid warnings about possibly
// uninitialized loop variable from some versions of g++ which are not
// smart enough to figure out that GetActive() doesn't throw and so
// that loop will always be initialized
wxEventLoopBase *loop = NULL;
try
{
loop = wxEventLoopBase::GetActive();
if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
{
if ( loop )
loop->Exit();
}
//else: continue running current event loop
return false;
}
catch ( ... )
{
// OnExceptionInMainLoop() threw, possibly rethrowing the same
// exception again: very good, but we still need Exit() to
// be called
if ( loop )
loop->Exit();
throw;
}
}
#endif // wxUSE_EXCEPTIONS
}
bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
{
const wxEventType eventType = event.GetEventType();
for ( int i = 0; table.entries[i].m_fn != 0; i++ )
{
const wxEventTableEntry& entry = table.entries[i];
if ( eventType == entry.m_eventType )
{
if ( ProcessEventIfMatchesId(entry, this, event) )
return true;
}
}
return false;
}
void wxEvtHandler::DoConnect(int id,
int lastId,
wxEventType eventType,
wxEventFunctor *func,
wxObject *userData)
{
wxDynamicEventTableEntry *entry =
new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
if (!m_dynamicEvents)
m_dynamicEvents = new wxList;
// Insert at the front of the list so most recent additions are found first
m_dynamicEvents->Insert( (wxObject*) entry );
// Make sure we get to know when a sink is destroyed
wxEvtHandler *eventSink = func->GetEvtHandler();
if ( eventSink && eventSink != this )
{
wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
if ( evtConnRef )
evtConnRef->IncRef( );
else
new wxEventConnectionRef(this, eventSink);
}
}
bool
wxEvtHandler::DoDisconnect(int id,
int lastId,
wxEventType eventType,
const wxEventFunctor& func,
wxObject *userData)
{
if (!m_dynamicEvents)
return false;
// Remove connection from tracker node (wxEventConnectionRef)
wxEvtHandler *eventSink = func.GetEvtHandler();
if ( eventSink && eventSink != this )
{
wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
if ( evtConnRef )
evtConnRef->DecRef();
}
wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
while (node)
{
wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
if ((entry->m_id == id) &&
((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
entry->m_fn->Matches(func) &&
((entry->m_callbackUserData == userData) || !userData))
{
delete entry->m_callbackUserData;
m_dynamicEvents->Erase( node );
delete entry;
return true;
}
node = node->GetNext();
}
return false;
}
bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
{
wxCHECK_MSG( m_dynamicEvents, false,
wxT("caller should check that we have dynamic events") );
wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
while (node)
{
wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
// get next node before (maybe) calling the event handler as it could
// call Disconnect() invalidating the current node
node = node->GetNext();
if ( event.GetEventType() == entry->m_eventType )
{
wxEvtHandler *handler = entry->m_fn->GetEvtHandler();
if ( !handler )
handler = this;
if ( ProcessEventIfMatchesId(*entry, handler, event) )
return true;
}
}
return false;
}
void wxEvtHandler::DoSetClientObject( wxClientData *data )
{
wxASSERT_MSG( m_clientDataType != wxClientData_Void,
wxT("can't have both object and void client data") );
if ( m_clientObject )
delete m_clientObject;
m_clientObject = data;
m_clientDataType = wxClientData_Object;
}
wxClientData *wxEvtHandler::DoGetClientObject() const
{
// it's not an error to call GetClientObject() on a window which doesn't
// have client data at all - NULL will be returned
wxASSERT_MSG( m_clientDataType != wxClientData_Void,
wxT("this window doesn't have object client data") );
return m_clientObject;
}
void wxEvtHandler::DoSetClientData( void *data )
{
wxASSERT_MSG( m_clientDataType != wxClientData_Object,
wxT("can't have both object and void client data") );
m_clientData = data;
m_clientDataType = wxClientData_Void;
}
void *wxEvtHandler::DoGetClientData() const
{
// it's not an error to call GetClientData() on a window which doesn't have
// client data at all - NULL will be returned
wxASSERT_MSG( m_clientDataType != wxClientData_Object,
wxT("this window doesn't have void client data") );
return m_clientData;
}
// A helper to find an wxEventConnectionRef object
wxEventConnectionRef *
wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
{
for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
{
// we only want wxEventConnectionRef nodes here
wxEventConnectionRef *evtConnRef = node->ToEventConnection();
if ( evtConnRef && evtConnRef->m_src == this )
{
wxASSERT( evtConnRef->m_sink==eventSink );
return evtConnRef;
}
}
return NULL;
}
void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
{
wxASSERT(m_dynamicEvents);
// remove all connections with this sink
wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
while (node)
{
wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
node_nxt = node->GetNext();
if ( entry->m_fn->GetEvtHandler() == sink )
{
delete entry->m_callbackUserData;
m_dynamicEvents->Erase( node );
delete entry;
}
node = node_nxt;
}
}
#endif // wxUSE_BASE
#if wxUSE_GUI
// Find a window with the focus, that is also a descendant of the given window.
// This is used to determine the window to initially send commands to.
wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
{
// Process events starting with the window with the focus, if any.
wxWindow* focusWin = wxWindow::FindFocus();
wxWindow* win = focusWin;
// Check if this is a descendant of this frame.
// If not, win will be set to NULL.
while (win)
{
if (win == ancestor)
break;
else
win = win->GetParent();
}
if (win == NULL)
focusWin = NULL;
return focusWin;
}
// ----------------------------------------------------------------------------
// wxEventBlocker
// ----------------------------------------------------------------------------
wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
{
wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
m_window = win;
Block(type);
m_window->PushEventHandler(this);
}
wxEventBlocker::~wxEventBlocker()
{
wxEvtHandler *popped = m_window->PopEventHandler(false);
wxCHECK_RET(popped == this,
wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
}
bool wxEventBlocker::ProcessEvent(wxEvent& event)
{
// should this event be blocked?
for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
{
wxEventType t = (wxEventType)m_eventsToBlock[i];
if ( t == wxEVT_ANY || t == event.GetEventType() )
return true; // yes, it should: mark this event as processed
}
return false;
}
#endif // wxUSE_GUI
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