// Author: Vadim Zeitlin
// Modified by:
// Created: 01.06.01
-// RCS-ID: $Id$
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#if wxUSE_EVENTLOOP_SOURCE
// create a new event loop source wrapping the given file descriptor and
- // start monitoring it
- virtual wxEventLoopSource *
- AddSourceForFD(int fd, wxEventLoopSourceHandler *handler, int flags) = 0;
+ // monitor it for events occurring on this descriptor in all event loops
+ static wxEventLoopSource *
+ AddSourceForFD(int fd, wxEventLoopSourceHandler *handler, int flags);
#endif // wxUSE_EVENTLOOP_SOURCE
// dispatch&processing
bool IsRunning() const;
// exit from the loop with the given exit code
- virtual void Exit(int rc = 0) = 0;
+ //
+ // this can be only used to exit the currently running loop, use
+ // ScheduleExit() if this might not be the case
+ virtual void Exit(int rc = 0);
+
+ // ask the event loop to exit with the given exit code, can be used even if
+ // this loop is not running right now but the loop must have been started,
+ // i.e. Run() should have been already called
+ virtual void ScheduleExit(int rc = 0) = 0;
// return true if any events are available
virtual bool Pending() const = 0;
// an exception thrown from inside the loop)
virtual void OnExit();
+ // Return true if we're currently inside our Run(), even if another nested
+ // event loop is currently running, unlike IsRunning() (which should have
+ // been really called IsActive() but it's too late to change this now).
+ bool IsInsideRun() const { return m_isInsideRun; }
+
+
// the pointer to currently active loop
static wxEventLoopBase *ms_activeLoop;
bool m_isInsideYield;
long m_eventsToProcessInsideYield;
+private:
+ // this flag is set on entry into Run() and reset before leaving it
+ bool m_isInsideRun;
+
wxDECLARE_NO_COPY_CLASS(wxEventLoopBase);
};
// sets the "should exit" flag and wakes up the loop so that it terminates
// soon
- virtual void Exit(int rc = 0);
+ virtual void ScheduleExit(int rc = 0);
protected:
// enters a loop calling OnNextIteration(), Pending() and Dispatch() and
wxGUIEventLoop() { m_impl = NULL; }
virtual ~wxGUIEventLoop();
-#if wxUSE_EVENTLOOP_SOURCE
- // We need to define a base class pure virtual method but we can't provide
- // a generic implementation for it so simply fail.
- virtual wxEventLoopSource *
- AddSourceForFD(int WXUNUSED(fd),
- wxEventLoopSourceHandler * WXUNUSED(handler),
- int WXUNUSED(flags))
- {
- wxFAIL_MSG( "support for event loop sources not implemented" );
- return NULL;
- }
-#endif // wxUSE_EVENTLOOP_SOURCE
-
- virtual void Exit(int rc = 0);
+ virtual void ScheduleExit(int rc = 0);
virtual bool Pending() const;
virtual bool Dispatch();
virtual int DispatchTimeout(unsigned long timeout)