public static BaseMetroDialog ShowModalDialogExternally(this BaseMetroDialog dialog)
{
Window win = SetupExternalDialogWindow(dialog);
dialog.OnShown();
win.ShowDialog();
return(dialog);
}
private static SizeChangedEventHandler SetupAndOpenDialog(MetroWindow window, BaseMetroDialog dialog)
{
dialog.SetValue(Panel.ZIndexProperty, (int)window.overlayBox.GetValue(Panel.ZIndexProperty) + 1);
dialog.MinHeight = window.ActualHeight / 4.0;
dialog.MaxHeight = window.ActualHeight;
SizeChangedEventHandler sizeHandler = (sender, args) =>
{
dialog.MinHeight = window.ActualHeight / 4.0;
dialog.MaxHeight = window.ActualHeight;
};
window.SizeChanged += sizeHandler;
window.AddDialog(dialog);
dialog.OnShown();
return(sizeHandler);
}
/// <summary>
/// Adds a Metro Dialog instance to the specified window and makes it visible asynchronously.
/// If you want to wait until the user has closed the dialog, use <see cref="BaseMetroDialog.WaitUntilUnloadedAsync"/>
/// <para>You have to close the resulting dialog yourself with <see cref="HideMetroDialogAsync"/>.</para>
/// </summary>
/// <param name="window">The owning window of the dialog.</param>
/// <param name="dialog">The dialog instance itself.</param>
/// <param name="settings">An optional pre-defined settings instance.</param>
/// <returns>A task representing the operation.</returns>
/// <exception cref="InvalidOperationException">The <paramref name="dialog"/> is already visible in the window.</exception>
public static Task ShowMetroDialogAsync([NotNull] this MetroWindow window, [NotNull] BaseMetroDialog dialog, [CanBeNull] MetroDialogSettings settings = null)
{
if (window == null)
{
throw new ArgumentNullException(nameof(window));
}
window.Dispatcher.VerifyAccess();
if (dialog == null)
{
throw new ArgumentNullException(nameof(dialog));
}
if (window.metroActiveDialogContainer.Children.Contains(dialog) || window.metroInactiveDialogContainer.Children.Contains(dialog))
{
throw new InvalidOperationException("The provided dialog is already visible in the specified window.");
}
settings = settings ?? (dialog.DialogSettings ?? window.MetroDialogOptions);
return(HandleOverlayOnShow(settings, window).ContinueWith(z =>
{
return (Task)window.Dispatcher.Invoke(new Func <Task>(() =>
{
SetDialogFontSizes(settings, dialog);
SizeChangedEventHandler sizeHandler = SetupAndOpenDialog(window, dialog);
dialog.SizeChangedHandler = sizeHandler;
return dialog.WaitForLoadAsync().ContinueWith(x =>
{
dialog.OnShown();
if (DialogOpened != null)
{
window.Dispatcher.BeginInvoke(new Action(() => DialogOpened(window, new DialogStateChangedEventArgs())));
}
});
}));
}).Unwrap());
}
