/// <summary>
/// Shows the given child window on the given container in an asynchronous way.
/// When the dialog was closed it returns a result.
/// </summary>
/// <param name="window">The owning window with a container of the child window.</param>
/// <param name="dialog">A child window instance.</param>
/// <param name="container">The container.</param>
/// <returns></returns>
/// <exception cref="System.InvalidOperationException">
/// The provided child window can not add, there is no container defined.
/// or
/// The provided child window is already visible in the specified window.
/// </exception>
public static Task ShowChildWindowAsync(this Window window, ChildWindow dialog, Panel container)
{
return(window.ShowChildWindowAsync <object>(dialog, container));
}
/// <summary>
/// Shows the given child window on the MetroWindow dialog container in an asynchronous way.
/// When the dialog was closed it returns a result.
/// </summary>
/// <param name="window">The owning window with a container of the child window.</param>
/// <param name="dialog">A child window instance.</param>
/// <param name="overlayFillBehavior">The overlay fill behavior.</param>
/// <returns>
/// A task representing the operation.
/// </returns>
/// <exception cref="System.InvalidOperationException">
/// The provided child window can not add, the container can not be found.
/// or
/// The provided child window is already visible in the specified window.
/// </exception>
public static Task <TResult> ShowChildWindowAsync <TResult>(this Window window, ChildWindow dialog, OverlayFillBehavior overlayFillBehavior = OverlayFillBehavior.WindowContent)
{
window.Dispatcher.VerifyAccess();
var metroDialogContainer = window.Template.FindName("PART_MetroActiveDialogContainer", window) as Grid;
metroDialogContainer = metroDialogContainer ?? window.Template.FindName("PART_MetroInactiveDialogsContainer", window) as Grid;
if (metroDialogContainer == null)
{
throw new InvalidOperationException("The provided child window can not add, there is no container defined.");
}
if (metroDialogContainer.Children.Contains(dialog))
{
throw new InvalidOperationException("The provided child window is already visible in the specified window.");
}
if (overlayFillBehavior == OverlayFillBehavior.WindowContent)
{
metroDialogContainer.SetValue(Grid.RowProperty, (int)metroDialogContainer.GetValue(Grid.RowProperty) + 1);
metroDialogContainer.SetValue(Grid.RowSpanProperty, 1);
}
return(ShowChildWindowInternalAsync <TResult>(dialog, metroDialogContainer));
}
/// <summary>
/// Shows the given child window on the MetroWindow dialog container in an asynchronous way.
/// </summary>
/// <param name="window">The owning window with a container of the child window.</param>
/// <param name="dialog">A child window instance.</param>
/// <param name="overlayFillBehavior">The overlay fill behavior.</param>
/// <returns>
/// A task representing the operation.
/// </returns>
/// <exception cref="System.InvalidOperationException">
/// The provided child window can not add, the container can not be found.
/// or
/// The provided child window is already visible in the specified window.
/// </exception>
public static Task ShowChildWindowAsync(this Window window, ChildWindow dialog, OverlayFillBehavior overlayFillBehavior = OverlayFillBehavior.WindowContent)
{
return(window.ShowChildWindowAsync <object>(dialog, overlayFillBehavior));
}
private static Task AddDialogToContainerAsync(ChildWindow dialog, Panel container)
{
return(Task.Factory.StartNew(() => dialog.Dispatcher.Invoke(new Action(() => container.Children.Add(dialog)))));
}
private static Task <TResult> ShowChildWindowInternalAsync <TResult>(ChildWindow dialog, Panel container)
{
return(AddDialogToContainerAsync(dialog, container)
.ContinueWith(task => { return (Task <TResult>)dialog.Dispatcher.Invoke(new Func <Task <TResult> >(() => OpenDialogAsync <TResult>(dialog, container))); })
.Unwrap());
}
/// <summary>
/// Shows the given child window on the given container in an asynchronous way.
/// </summary>
/// <param name="window">The owning window with a container of the child window.</param>
/// <param name="dialog">A child window instance.</param>
/// <param name="container">The container.</param>
/// <returns></returns>
/// <exception cref="System.InvalidOperationException">
/// The provided child window can not add, there is no container defined.
/// or
/// The provided child window is already visible in the specified window.
/// </exception>
public static Task <TResult> ShowChildWindowAsync <TResult>(this Window window, ChildWindow dialog, Panel container)
{
window.Dispatcher.VerifyAccess();
if (container == null)
{
throw new InvalidOperationException("The provided child window can not add, there is no container defined.");
}
if (container.Children.Contains(dialog))
{
throw new InvalidOperationException("The provided child window is already visible in the specified window.");
}
return(ShowChildWindowInternalAsync <TResult>(dialog, container));
}
