/// <summary>
/// Creates a ContentDialog inside of the current window.
/// </summary>
/// <param name="window">The CushWindow.</param>
/// <param name="content">The ContentDialog to display.</param>
/// <param name="settings">Optional settings that override the global metro dialog settings.</param>
/// <returns>A task promising the result of which button was pressed.</returns>
public static Task<MessageDialogResult> ShowDialogAsync(this CushWindow window, ContentDialog content,
DialogSettings settings = null)
{
ThrowHelper.IfNullThenThrow(() => content);
if (settings == null)
settings = content.DialogSettings ?? window.DialogOptions ?? new DialogSettings();
window.Dispatcher.VerifyAccess();
return HandleOverlayOnShow(settings, window).ContinueWith(z => window.Dispatcher.Invoke(() =>
{
var dialog = GetDialog(window, content, settings);
var sizeHandler = SetupAndOpenDialog(window, dialog);
dialog.SizeChangedHandler = sizeHandler;
return dialog.WaitForLoadAsync().ContinueWith(x =>
{
window.OnDialogOpened();
return dialog.WaitForButtonPressAsync().ContinueWith(y =>
{
//once a button as been clicked, begin removing the dialog.
dialog.OnClose();
window.OnDialogClosed();
var closingTask = window.Dispatcher.Invoke(dialog.WaitForCloseAsync);
return closingTask.ContinueWith(a => (window.Dispatcher.Invoke(() =>
{
window.SizeChanged -= sizeHandler;
window.DialogContainer.Children.Remove(dialog);
//remove the dialog from the container
return HandleOverlayOnHide(settings, window);
//window.overlayBox.Visibility = System.Windows.Visibility.Hidden; //deactive the overlay effect
})).ContinueWith(y3 => y).Unwrap());
}).Unwrap();
}).Unwrap().Unwrap();
})).Unwrap();
}
private static ContentDialog CreateDialog(CushWindow window, ContentDialog content, DialogSettings settings)
{
if (settings == null)
settings = window.DialogOptions;
// Pull the content out of the dialog and put it into a new dialog.
// (For some reason, using the dialog directly doesn't work.)
var body = content;
var bodyContext = (content).DataContext;
//create the dialog control
var dialog = new ContentDialog(window, settings)
{
Content = body,
Guid = content.Guid,
DataContext = bodyContext
};
return dialog;
}
private static ContentDialog GetDialog(CushWindow window, ContentDialog content, DialogSettings settings)
{
// Return the existing dialog, if it exists.
// Otherwise, create a new one.
return window.DialogContainer.Children.Cast<ContentDialog>()
.FirstOrDefault(item => item.Guid == content.Guid)
?? CreateDialog(window, content, settings);
}
public static void SetDialogResult(ContentDialog target, bool? value)
{
target.SetValue(DialogResultProperty, value);
}
