wxMessageBox off the main thread lost result code.

[wxWidgets.git] / src / common / fswatchercmn.cpp

diff --git a/src/common/fswatchercmn.cpp b/src/common/fswatchercmn.cpp
index b994758b60af80c9fc696bf063aa6ec0662aaf0c..1de2422183e1ad5ed104952a6864ff8a5ffb4eef 100644 (file)
--- a/src/common/fswatchercmn.cpp
+++ b/src/common/fswatchercmn.cpp
@@ -3,7 +3,6 @@
 // Purpose:     wxMswFileSystemWatcher
 // Author:      Bartosz Bekier
 // Created:     2009-05-26
-// RCS-ID:      $Id$
 // Copyright:   (c) 2009 Bartosz Bekier <bartosz.bekier@gmail.com>
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
@@ -40,6 +39,16 @@ static wxString GetFSWEventChangeTypeName(int type)
         return "MODIFY";
     case wxFSW_EVENT_ACCESS:
         return "ACCESS";
+    case wxFSW_EVENT_ATTRIB: // Currently this is wxGTK-only
+        return "ATTRIBUTE";
+#ifdef wxHAS_INOTIFY
+    case wxFSW_EVENT_UNMOUNT: // Currently this is wxGTK-only
+        return "UNMOUNT";
+#endif
+    case wxFSW_EVENT_WARNING:
+        return "WARNING";
+    case wxFSW_EVENT_ERROR:
+        return "ERROR";
     }
 
     // should never be reached!
@@ -52,6 +61,8 @@ static wxString GetFSWEventChangeTypeName(int type)
 // wxFileSystemWatcherEvent implementation
 // ============================================================================
 
+IMPLEMENT_DYNAMIC_CLASS(wxFileSystemWatcherEvent, wxEvent);
+
 wxString wxFileSystemWatcherEvent::ToString() const
 {
     return wxString::Format("FSW_EVT type=%d (%s) path='%s'", m_changeType,
@@ -90,7 +101,10 @@ bool wxFileSystemWatcherBase::Add(const wxFileName& path, int events)
     }
     else
     {
-        wxLogError(_("Can't monitor non-existent path \"%s\" for changes."),
+        // Don't overreact to being passed a non-existent item. It may have
+        // only just been deleted, in which case doing nothing is correct
+        wxLogTrace(wxTRACE_FSWATCHER,
+                   "Can't monitor non-existent path \"%s\" for changes.",
                    path.GetFullPath());
         return false;
     }
@@ -120,7 +134,7 @@ wxFileSystemWatcherBase::AddAny(const wxFileName& path,
     if ( it == m_watches.end() )
     {
         wxFSWatchInfoMap::value_type val(canonical, watch);
-        m_watches.insert(val).second;
+        m_watches.insert(val);
     }
     else
     {
@@ -173,34 +187,20 @@ bool wxFileSystemWatcherBase::AddTree(const wxFileName& path, int events,
         {
         }
 
-        // CHECK we choose which files to delegate to Add(), maybe we should pass
-        // all of them to Add() and let it choose? this is useful when adding a
-        // file to a dir that is already watched, then not only should we know
-        // about that, but Add() should also behave well then
-        virtual wxDirTraverseResult OnFile(const wxString& filename)
+        virtual wxDirTraverseResult OnFile(const wxString& WXUNUSED(filename))
         {
-            if ( m_watcher->AddAny(wxFileName::FileName(filename),
-                                   m_events, wxFSWPath_File) )
-            {
-                wxLogTrace(wxTRACE_FSWATCHER,
-                       "--- AddTree adding file '%s' ---", filename);
-            }
+            // There is no need to watch individual files as we watch the
+            // parent directory which will notify us about any changes in them.
             return wxDIR_CONTINUE;
         }
 
         virtual wxDirTraverseResult OnDir(const wxString& dirname)
         {
-            // We can't currently watch only the files with the given filespec
-            // in the subdirectories so we only watch subdirectories at all if
-            // we want to watch everything.
-            if ( m_filespec.empty() )
+            if ( m_watcher->AddAny(wxFileName::DirName(dirname),
+                                   m_events, wxFSWPath_Tree, m_filespec) )
             {
-                if ( m_watcher->AddAny(wxFileName::DirName(dirname),
-                                       m_events, wxFSWPath_Dir) )
-                {
-                    wxLogTrace(wxTRACE_FSWATCHER,
-                       "--- AddTree adding directory '%s' ---", dirname);
-                }
+                wxLogTrace(wxTRACE_FSWATCHER,
+                   "--- AddTree adding directory '%s' ---", dirname);
             }
             return wxDIR_CONTINUE;
         }
@@ -212,11 +212,17 @@ bool wxFileSystemWatcherBase::AddTree(const wxFileName& path, int events,
     };
 
     wxDir dir(path.GetFullPath());
+    // Prevent asserts or infinite loops in trees containing symlinks
+    int flags = wxDIR_DIRS;
+    if ( !path.ShouldFollowLink() )
+    {
+        flags |= wxDIR_NO_FOLLOW;
+    }
     AddTraverser traverser(this, events, filespec);
-    dir.Traverse(traverser, filespec);
+    dir.Traverse(traverser, filespec, flags);
 
     // Add the path itself explicitly as Traverse() doesn't return it.
-    AddAny(path.GetPathWithSep(), events, wxFSWPath_Dir, filespec);
+    AddAny(path.GetPathWithSep(), events, wxFSWPath_Tree, filespec);
 
     return true;
 }
@@ -237,24 +243,16 @@ bool wxFileSystemWatcherBase::RemoveTree(const wxFileName& path)
         {
         }
 
-        virtual wxDirTraverseResult OnFile(const wxString& filename)
+        virtual wxDirTraverseResult OnFile(const wxString& WXUNUSED(filename))
         {
-            m_watcher->Remove(wxFileName(filename));
+            // We never watch the individual files when watching the tree, so
+            // nothing to do here.
             return wxDIR_CONTINUE;
         }
 
         virtual wxDirTraverseResult OnDir(const wxString& dirname)
         {
-            // Currently the subdirectories would have been added only if there
-            // is no filespec.
-            //
-            // Notice that we still need to recurse into them even if we're
-            // using a filespec because they can contain files matching it.
-            if ( m_filespec.empty() )
-            {
-                m_watcher->Remove(wxFileName::DirName(dirname));
-            }
-
+            m_watcher->Remove(wxFileName::DirName(dirname));
             return wxDIR_CONTINUE;
         }
 
@@ -282,8 +280,17 @@ bool wxFileSystemWatcherBase::RemoveTree(const wxFileName& path)
 #endif // __WINDOWS__
 
     wxDir dir(path.GetFullPath());
+    // AddTree() might have used the wxDIR_NO_FOLLOW to prevent asserts or
+    // infinite loops in trees containing symlinks. We need to do the same
+    // or we'll try to remove unwatched items. Let's hope the caller used
+    // the same ShouldFollowLink() setting as in AddTree()...
+    int flags = wxDIR_DIRS;
+    if ( !path.ShouldFollowLink() )
+    {
+        flags |= wxDIR_NO_FOLLOW;
+    }
     RemoveTraverser traverser(this, filespec);
-    dir.Traverse(traverser, filespec);
+    dir.Traverse(traverser, filespec, flags);
 
     // As in AddTree() above, handle the path itself explicitly.
     Remove(path);