private void fireSearchStarted(SuggestedDisplaySortMode suggestedSortMode)
{
if (SearchStarted != null)
{
SearchStarted.Invoke(suggestedSortMode);
}
}
private async Task SearchAsync()
{
if (string.IsNullOrEmpty(mSearchString))
{
return;
}
if (mSearchTask?.IsCanceled == false && mSearchTask?.IsCompleted == false)
{
//Cancel if previous search is running
await CancelSearchAsync();
}
xSearchBtn.Visibility = Visibility.Collapsed;
xSearchClearBtn.Visibility = Visibility.Visible;
mCancellationTokenSource = new CancellationTokenSource();
mSearchTask = new Task(() =>
{
this.Dispatcher.Invoke(() =>
{
try
{
mCancellationTokenSource.Token.ThrowIfCancellationRequested();
if (SearchStarted == null)
{
//If event is not hooked we say searching status on main window
Reporter.ToStatus(eStatusMsgKey.Search, null, ": " + mSearchString);
}
else
{
//If event is hookded then no point in showing status on main window.
//child window need to handle it in the window. E.g. Windows Explorer
SearchStarted.Invoke(Tree, new EventArgs());
}
Mouse.OverrideCursor = Cursors.Wait;
xTreeViewTree.FilterItemsByText(xTreeViewTree.TreeItemsCollection, mSearchString, mCancellationTokenSource.Token);
}
catch (Exception ex)
{
Reporter.ToLog(eLogLevel.ERROR, "Failed to search : ", ex);
}
finally
{
if (SearchStarted == null)
{
Reporter.HideStatusMessage();
}
else
{
SearchCompleted.Invoke(Tree, new EventArgs());
}
Mouse.OverrideCursor = null;
mCancellationTokenSource.Dispose();
}
});
}, mCancellationTokenSource.Token, TaskCreationOptions.LongRunning);
mSearchTask.Start();
}
protected virtual void OnSearchStarted(EventArgs args)
{
SearchStarted?.Invoke(this, args);
}