Define WXBUILDING in Xcode projects.

[wxWidgets.git] / include / wx / evtloop.h

diff --git a/include/wx/evtloop.h b/include/wx/evtloop.h
index 24ea711ece39e20af4719d81b7bde9d2e5dcb6c4..a9034aeac8a03744c35bd82de5d53b72838c2c15 100644 (file)
--- a/include/wx/evtloop.h
+++ b/include/wx/evtloop.h
@@ -79,16 +79,19 @@ public:
 
 #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
     // -------------------
 
     // start the event loop, return the exit code when it is finished
-    virtual int Run() = 0;
+    //
+    // notice that wx ports should override DoRun(), this method is virtual
+    // only to allow overriding it in the user code for custom event loops
+    virtual int Run();
 
     // is this event loop running now?
     //
@@ -97,7 +100,15 @@ public:
     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;
@@ -169,11 +180,20 @@ public:
 
 
 protected:
+    // real implementation of Run()
+    virtual int DoRun() = 0;
+
     // this function should be called before the event loop terminates, whether
     // this happens normally (because of Exit() call) or abnormally (because of
     // 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;
 
@@ -184,6 +204,10 @@ protected:
     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);
 };
 
@@ -198,15 +222,15 @@ class WXDLLIMPEXP_BASE wxEventLoopManual : public wxEventLoopBase
 public:
     wxEventLoopManual();
 
-    // enters a loop calling OnNextIteration(), Pending() and Dispatch() and
-    // terminating when Exit() is called
-    virtual int Run();
-
     // 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
+    // terminating when Exit() is called
+    virtual int DoRun();
+
     // may be overridden to perform some action at the start of each new event
     // loop iteration
     virtual void OnNextIteration() { }
@@ -272,21 +296,7 @@ public:
     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 int Run();
-    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)
@@ -307,6 +317,8 @@ public:
     virtual bool YieldFor(long eventsToProcess);
 
 protected:
+    virtual int DoRun();
+
     // the pointer to the port specific implementation class
     wxEventLoopImpl *m_impl;