def OnCheck(self, event):
# close eventually existing previous instance
self.list.ClearInstance()
self.SetStatusBarText()
try:
# create trees
fstree = FilesystemTree(self.rootDir, self.preferences.includes, \
[ os.path.sep + self.metaName ] + self.preferences.excludes)
fstree.open()
dbtree = DatabaseTree(self.dbFile, self.sigFile)
dbtree.open()
memtree = MemoryTree()
memtree.open()
except MyException as e:
e.showDialog('Checking ' + self.rootDir)
return
try:
# create progress dialog
progressDialog = FileProcessingProgressDialog(self, 'Checking ' + self.rootDir)
progressDialog.Show()
stats = fstree.getNodeStatistics()
progressDialog.Init(stats.getNodeCount(), stats.getNodeSize())
# execute task
fstree.registerHandlers(progressDialog.SignalNewFile, \
progressDialog.SignalBytesDone)
fstree.diff(dbtree, memtree)
memtree.commit()
fstree.unRegisterHandlers()
except UserCancelledException:
progressDialog.SignalFinished()
return
except MyException as e:
progressDialog.Destroy()
e.showDialog('Checking ' + self.rootDir)
return
# signal that we have returned from calculation, either
# after it is done or after progressDialog signalled that the
# user stopped the calcuation using the cancel button
progressDialog.SignalFinished()
self.list.SetInstance(Instance(self.preferences, memtree, dbtree, fstree))
self.list.readonly = False
self.SetStatusBarText('Checked ' + str(stats))
