[pitivi] projectmanager.py: check in ProjectSettingsChanged and ProjectLogObserver

[Edward Hervey <edwardrv src gnome org>]

commit 66cc5a00a7127c56f5551ba410ec96ebea19f7a6
Author: Brandon Lewis <brandon_lewis berkeley edu>
Date:   Mon Oct 19 00:47:46 2009 -0700

    projectmanager.py: check in ProjectSettingsChanged and ProjectLogObserver

 pitivi/projectmanager.py |   33 +++++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/projectmanager.py b/pitivi/projectmanager.py
index 0b3c67a..a9c1780 100644
--- a/pitivi/projectmanager.py
+++ b/pitivi/projectmanager.py
@@ -32,6 +32,39 @@ from pitivi.signalinterface import Signallable
 from pitivi.log.loggable import Loggable
 from pitivi.stream import AudioStream, VideoStream
 from pitivi.timeline.track import Track
+from pitivi.undo import UndoableAction
+
+class ProjectSettingsChanged(UndoableAction):
+
+    def __init__(self, project, old, new):
+        self.project = project
+        self.oldsettings = old
+        self.newsettings = new
+
+    def do(self):
+        self.project.setSettings(self.newsettings)
+        self._done()
+
+    def undo(self):
+        self.project.setSettings(self.oldsettings)
+        self._undone()
+
+class ProjectLogObserver(UndoableAction):
+
+    def __init__(self, log):
+        self.log = log
+
+    def startObserving(self, project):
+        project.connect("settings-changed", self._settingsChangedCb)
+
+    def stopObserving(self, project):
+        project.disconnect_by_function(self._settingsChangedCb)
+
+    def _settingsChangedCb(self, project, old, new):
+        action = ProjectSettingsChanged(project, old, new)
+        self.log.begin("change project settings")
+        self.log.push(action)
+        self.log.commit()
 
 class ProjectManager(Signallable, Loggable):
     __signals__ = {