private static Task HandleOverlayOnShow(MetroDialogSettings settings, MetroWindow window)
{
return(Task.Factory.StartNew(() =>
{
window.Invoke(() =>
{
var isCloseButtonEnabled = window.ShowDialogsOverTitleBar || settings == null || settings.OwnerCanCloseWithDialog;
window.SetValue(MetroWindow.IsCloseButtonEnabledWithDialogPropertyKey, BooleanBoxes.Box(isCloseButtonEnabled));
});
})
.ContinueWith(task =>
{
return window.Invoke(() =>
{
if (!window.metroActiveDialogContainer.Children.OfType <BaseMetroDialog>().Any())
{
return (settings == null || settings.AnimateShow ? window.ShowOverlayAsync() : Task.Factory.StartNew(() => window.Dispatcher.Invoke(new Action(window.ShowOverlay))));
}
else
{
var tcs = new System.Threading.Tasks.TaskCompletionSource <object>();
tcs.SetResult(null);
return tcs.Task;
}
});
})
.Unwrap());
}
private static Task HandleOverlayOnHide(MetroDialogSettings settings, MetroWindow window)
{
Task result = null;
if (!window.metroActiveDialogContainer.Children.OfType <BaseMetroDialog>().Any())
{
result = (settings == null || settings.AnimateHide ? window.HideOverlayAsync() : Task.Factory.StartNew(() => window.Dispatcher.Invoke(new Action(window.HideOverlay))));
}
else
{
var tcs = new System.Threading.Tasks.TaskCompletionSource <object>();
tcs.SetResult(null);
result = tcs.Task;
}
result.ContinueWith(task =>
{
window.Invoke(() =>
{
if (window.metroActiveDialogContainer.Children.Count == 0)
{
window.SetValue(MetroWindow.IsCloseButtonEnabledWithDialogPropertyKey, BooleanBoxes.TrueBox);
window.RestoreFocus();
}
else
{
var onTopShownDialogSettings = window.metroActiveDialogContainer.Children.OfType <BaseMetroDialog>().LastOrDefault()?.DialogSettings;
var isCloseButtonEnabled = window.ShowDialogsOverTitleBar || onTopShownDialogSettings == null || onTopShownDialogSettings.OwnerCanCloseWithDialog;
window.SetValue(MetroWindow.IsCloseButtonEnabledWithDialogPropertyKey, BooleanBoxes.Box(isCloseButtonEnabled));
}
});
});
return(result);
}
/// <summary>
/// Creates a <see cref="CustomMessageDialog"/> inside of the current window.
/// </summary>
/// <param name="window">The MetroWindow</param>
/// <param name="title">The title of the <see cref="CustomMessageDialog"/>.</param>
/// <param name="message">The message contained within the <see cref="CustomMessageDialog"/>.</param>
/// <param name="style">The type of buttons to use.</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> ShowCustomMessageAsync(
this MetroWindow window, string title, object message, MessageDialogStyle style = MessageDialogStyle.Affirmative, MetroDialogSettings settings = null)
{
settings = settings ?? window.MetroDialogOptions;
var dialog = new CustomMessageDialog(window, settings)
{
Message = message,
Title = title,
ButtonStyle = style
};
var tcs = new TaskCompletionSource <MessageDialogResult>();
dialog.WaitForButtonPressAsync().ContinueWith(async task =>
{
await window.Invoke(async() =>
{
await window.HideMetroDialogAsync(dialog);
// The focus may have changed and altered the command-routing path, so suggest that command conditions be re-evaluated.
// Note that this may no longer necessary since making the "current document" content control
// focusable (which fixed a bunch of command condition re-evaluation issues).
CommandManager.InvalidateRequerySuggested();
});
tcs.TrySetResult(task.Result);
});
window.ShowMetroDialogAsync(dialog, settings ?? window.MetroDialogOptions);
return(tcs.Task);
}