void FindPreviousAsyncCallback(IAsyncResult ar)
{
ThreadedAsyncResult tar = (ThreadedAsyncResult)ar;
FindPreviousOperation state = (FindPreviousOperation)tar.AsyncState;
if (state.Result == FindPreviousOperation.OperationResult.Finished && state.Match == null)
{
InformationAlert ia = new InformationAlert(Catalog.GetString("The pattern you requested was not found."), Catalog.GetString("Beginning of file reached."), mainWindow);
ia.Run();
ia.Destroy();
}
}
///<summary>
/// Handles operations that will surely produce on result (eg when
/// no DataView exists).
///</summary>
IAsyncResult HandleProblematicOp(GenericFindOperation op, AsyncCallback ac)
{
op.Result = GenericFindOperation.OperationResult.Finished;
findFinishedEvent.Reset();
IAsyncResult iar = new ThreadedAsyncResult(op, findFinishedEvent, true);
if (ac != null)
{
ac(iar);
}
findFinishedEvent.Set();
return(iar);
}
void ReplaceAllAsyncCallback(IAsyncResult ar)
{
ThreadedAsyncResult tar = (ThreadedAsyncResult)ar;
ReplaceAllOperation state = (ReplaceAllOperation)tar.AsyncState;
if (state.Result == ReplaceAllOperation.OperationResult.Finished)
{
InformationAlert ia = new InformationAlert("Found and replaced " + state.NumReplaced + " occurences.", "", null);
ia.Run();
ia.Destroy();
}
this.Sensitive = true;
this.Visible = false;
this.Visible = true;
}
void FindNextAsyncCallback(IAsyncResult ar)
{
ThreadedAsyncResult tar = (ThreadedAsyncResult)ar;
FindNextOperation state = (FindNextOperation)tar.AsyncState;
if (state.Result == FindNextOperation.OperationResult.Finished && state.Match == null)
{
InformationAlert ia = new InformationAlert("The pattern you requested was not found.", "End of file reached.", null);
ia.Run();
ia.Destroy();
}
this.Sensitive = true;
this.Visible = false;
this.Visible = true;
}
///<summary>
/// Save the buffer under the same filename, using an asynchronous model
///</summary>
public IAsyncResult BeginSave(ProgressCallback progressCallback, AsyncCallback ac)
{
lock (LockObj) {
if (!fileOperationsAllowed)
{
return(null);
}
saveFinishedEvent.Reset();
userSaveAsyncCallback = ac;
Thread saveThread = null;
ThreadedAsyncResult tar = null;
// decide whether to save in place or normally
if (!fileBuf.IsResizable || this.Size == fileBuf.Size)
{
SaveInPlaceOperation sipo = new SaveInPlaceOperation(this, progressCallback, SaveInPlaceAsyncCallback, useGLibIdle);
saveThread = new Thread(sipo.OperationThread);
tar = new ThreadedAsyncResult(sipo, saveFinishedEvent, false);
}
else
{
SaveOperation so = new SaveOperation(this, TempFile.CreateName(tempDir), progressCallback, SaveAsyncCallback, useGLibIdle);
saveThread = new Thread(so.OperationThread);
tar = new ThreadedAsyncResult(so, saveFinishedEvent, false);
}
// don't allow messing up with the buffer
// while we are saving
// ...ReadAllowed is set in SaveOperation
//this.ReadAllowed=false;
this.ModifyAllowed = false;
this.FileOperationsAllowed = false;
this.EmitEvents = false;
fsw.EnableRaisingEvents = false;
// start save thread
saveThread.IsBackground = true;
saveThread.Start();
return(tar);
}
}