Merge SOC2009_FSWATCHER branch into trunk.

Merges everything from the branch with only some minor changes, mostly renamed
wxUSE_FSWATCHER_{INOTIFY,KQUEUE} to wxHAS_{INOTIFY,KQUEUE}.

Add wxFileSystemWatcher and related classes.

Also introduces wxEventLoopSource.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62474 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/evtloop.h

@@ -17,9 +17,17 @@
 
 typedef union  _GdkEvent        GdkEvent;
 
-class WXDLLIMPEXP_CORE wxGUIEventLoop : public wxEventLoopBase
+#if wxUSE_EVENTLOOP_SOURCE
+// maps event loop sources to gtk source ids
+WX_DECLARE_HASH_MAP(wxUnixEventLoopSource*, int, wxPointerHash, wxPointerEqual,
+                    wxEventLoopSourceIdMap);
+#endif
+
+class WXDLLIMPEXP_BASE wxGUIEventLoop : public wxEventLoopBase
 {
 public:
+    typedef wxUnixEventLoopSource Source;
+
     wxGUIEventLoop();
 
     virtual int Run();
@@ -33,7 +41,29 @@ public:
     void StoreGdkEventForLaterProcessing(GdkEvent* ev)
         { m_arrGdkEvents.Add(ev); }
 
+#if wxUSE_EVENTLOOP_SOURCE
+    virtual wxUnixEventLoopSource* CreateSource() const
+    {
+        return new wxUnixEventLoopSource();
+    }
+
+    virtual wxUnixEventLoopSource* CreateSource(int res,
+                                           wxEventLoopSourceHandler* handler,
+                                           int flags) const
+    {
+        return new wxUnixEventLoopSource(res, handler, flags);
+    }
+#endif
+
 protected:
+#if wxUSE_EVENTLOOP_SOURCE
+    // adding/removing sources
+    virtual bool DoAddSource(wxAbstractEventLoopSource* source);
+    virtual bool DoRemoveSource(wxAbstractEventLoopSource* source);
+
+    // map of event loop sources gtk ids
+    wxEventLoopSourceIdMap m_sourceIdMap;
+#endif
 
     // the exit code of this event loop
     int m_exitcode;