///<summary>Starts the thread which will populate the graph's data. DB context should be set before calling this method.</summary>
/// <param name="forceCacheRefesh">Will pass this flag along to the thread which retrieves the cache. If true then cache will be invalidated and re-initialiazed from the db. Use sparingly.</param>
/// <param name="onException">Exception handler if something fails. If not set then all exceptions will be swallowed.</param>
/// <param name="onThreadDone">Done event handler. Will be invoked when init thread has completed.</param>
private void Init(bool forceCacheRefesh = false, ODThread.ExceptionDelegate onException = null, EventHandler onThreadDone = null)
{
if (_thread != null)
{
return;
}
if (onThreadDone == null)
{
onThreadDone = new EventHandler(delegate(object o, EventArgs e) { });
}
if (onException == null)
{
onException = new ODThread.ExceptionDelegate((Exception e) => { });
}
_thread = new ODThread(new ODThread.WorkerDelegate((ODThread x) => {
//The thread may have run and return before the window is even ready to display.
if (this.IsHandleCreated)
{
OnThreadStartLocal(this, new EventArgs());
}
else
{
this.HandleCreated += OnThreadStartLocal;
}
//Alert caller that it's time to start querying the db.
OnInit(forceCacheRefesh);
}));
_thread.Name = "GraphQuantityFilterOverTime.Init";
_thread.AddExceptionHandler(onException);
_thread.AddExitHandler(new ODThread.WorkerDelegate((ODThread x) => {
try {
_thread = null;
//The thread may have run and return before the window is even ready to display.
if (this.IsHandleCreated)
{
OnThreadExitLocal(this, new EventArgs());
}
else
{
this.HandleCreated += OnThreadExitLocal;
}
//Alert caller that db querying is done.
onThreadDone(this, new EventArgs());
}
catch (Exception) { }
}));
_thread.Start(true);
}
///<summary>Runs the workerDelegate on a separate thread and displays a progress window while the thread is running.</summary>
public static void ShowProgressForThread(ODThread.WorkerDelegate workerDelegate, Control parent, string startingMessage = "Please Wait...",
ProgBarStyle progStyle = ProgBarStyle.Blocks, string threadName = "ODProgressThread", ODThread.ExceptionDelegate exceptionHandler = null)
{
ODProgress prog = new ODProgress(Lan.g(parent, startingMessage), progStyle);
ODThread thread = new ODThread(workerDelegate);
if (exceptionHandler != null)
{
thread.AddExceptionHandler(exceptionHandler);
}
thread.Name = threadName;
thread.ProgressLog = prog;
thread.Start(true);
prog.ShowDialog(parent);
}
