internal ProgressDialogController(ProgressDialog dialog, Func<Task> closeCallBack)
{
WrappedDialog = dialog;
CloseCallback = closeCallBack;
IsOpen = dialog.IsVisible;
WrappedDialog.PART_NegativeButton.Dispatcher.Invoke(new Action(() =>
{
WrappedDialog.PART_NegativeButton.Click += PART_NegativeButton_Click;
}));
}
/// <summary>
/// Creates a ProgressDialog inside of the current window.
/// </summary>
/// <param name="title">The title of the ProgressDialog.</param>
/// <param name="message">The message within the ProgressDialog.</param>
/// <param name="isCancelable">Determines if the cancel button is visible.</param>
/// <param name="settings">Optional Settings that override the global metro dialog settings.</param>
/// <returns>A task promising the instance of ProgressDialogController for this operation.</returns>
public static Task<ProgressDialogController> ShowProgressAsync(this MetroWindow window, string title, string message, bool isCancelable = false, MetroDialogSettings settings = null)
{
window.Dispatcher.VerifyAccess();
return HandleOverlayOnShow(settings, window).ContinueWith(z =>
{
return ((Task<ProgressDialogController>)window.Dispatcher.Invoke(new Func<Task<ProgressDialogController>>(() =>
{
//create the dialog control
ProgressDialog dialog = new ProgressDialog(window);
dialog.Message = message;
dialog.Title = title;
dialog.IsCancelable = isCancelable;
if (settings == null)
settings = window.MetroDialogOptions;
dialog.NegativeButtonText = settings.NegativeButtonText;
SizeChangedEventHandler sizeHandler = SetupAndOpenDialog(window, dialog);
dialog.SizeChangedHandler = sizeHandler;
return dialog.WaitForLoadAsync().ContinueWith(x =>
{
if (DialogOpened != null)
{
window.Dispatcher.BeginInvoke(new Action(() => DialogOpened(window, new DialogStateChangedEventArgs()
{
})));
}
return new ProgressDialogController(dialog, () =>
{
dialog.OnClose();
if (DialogClosed != null)
{
window.Dispatcher.BeginInvoke(new Action(() => DialogClosed(window, new DialogStateChangedEventArgs()
{
})));
}
Task closingTask = (Task)window.Dispatcher.Invoke(new Func<Task>(() => dialog._WaitForCloseAsync()));
return closingTask.ContinueWith<Task>(a =>
{
return (Task)window.Dispatcher.Invoke(new Func<Task>(() =>
{
window.SizeChanged -= sizeHandler;
window.metroDialogContainer.Children.Remove(dialog); //remove the dialog from the container
return HandleOverlayOnHide(settings, window);
//window.overlayBox.Visibility = System.Windows.Visibility.Hidden; //deactive the overlay effect
}));
}).Unwrap();
});
});
})));
}).Unwrap();
}
