/// <summary>
/// Closes the window that is managed by this navigation service.
/// </summary>
/// <param name="isCancellable">Determines whether the closing of the application can be cancelled by the view model.</param>
/// <param name="navigationReason">The navigation reason that is sent to the view model.</param>
/// <returns>Returns a value that determines whether the window was closed or its closing was cancelled. If <see cref="p:isCancellable"/> is set to <c>false</c>, <c>NavigationResult.Navigated</c> is always returned.</returns>
internal async Task <NavigationResult> CloseWindowAsync(bool isCancellable, NavigationReason navigationReason)
{
// Creates new event arguments for the navigation events
NavigationEventArgs eventArguments = null;
// Checks if the current view model exists, if so then its life-cycle events must be invoked
if (this.CurrentViewModel != null)
{
// Checks if the window supports navigation and if the the current view has a view model, if so, then the on navigate from event is raised for the view model of the current view
eventArguments = new NavigationEventArgs(navigationReason);
await this.CurrentViewModel.OnNavigateFromAsync(eventArguments);
if (eventArguments.Cancel && isCancellable && navigationReason != NavigationReason.WindowClosed)
{
return(NavigationResult.Canceled);
}
// Deactivates the view model of the current view and disposes of it
await this.CurrentViewModel.OnDeactivateAsync();
this.CurrentViewModel.Dispose();
}
// Clears the navigation stack
await this.ClearNavigationStackAsync();
// Closes the window
this.window.Close();
// Since the window was closed successfully, a positive result is returned
return(NavigationResult.Navigated);
}
/// <summary>
/// Initializes a new <see cref="NavigationEventArgs"/> instance.
/// </summary>
/// <param name="reason">The reason of the navigation.</param>
public NavigationEventArgs(NavigationReason reason)
{
this.Reason = reason;
}
public async Task <NavigateFocusResult> NavigateFocusAsync(NavigationReason reason, Rect origin, Guid guid)
{
await Task.Delay(10);
return(new NavigateFocusResult());
}
/// <summary>
/// Initializes a new <see cref="NavigationEventArgs"/> instance.
/// </summary>
/// <param name="reason">The reason of the navigation.</param>
public NavigationEventArgs(NavigationReason reason)
{
this.Reason = reason;
}
/// <summary> /// Closes the window that is managed by this navigation service. /// </summary> /// <param name="isCancellable">Determines whether the closing of the application can be cancelled by the view model.</param> /// <param name="navigationReason">The navigation reason that is sent to the view model.</param> /// <returns>Returns a value that determines whether the window was closed or its closing was cancelled. If <see cref="p:isCancellable"/> is set to <c>false</c>, <c>NavigationResult.Navigated</c> is always returned.</returns> internal Task <NavigationResult> CloseWindowAsync(bool isCancellable, NavigationReason navigationReason) => this.CloseWindowAsync(isCancellable, navigationReason, true);
