/// <inheritdoc />
public async Task <bool> DisplayAsync(object dataContext, ICoordinationArguments coordinationArguments)
{
if (coordinationArguments is RegionArguments arguments)
{
var control = RegionManager.GetControl(arguments.RegionManagerReference, arguments.TargetRegion);
if (control.DataContext is IBehaviorHost interactive)
{
var context = new ContentChangingBehaviorContext(ServiceContext.ServiceProvider, control.DataContext, dataContext);
await BehaviorRunner.ExecuteAsync(interactive, context);
if (context.Cancelled)
{
Log.Debug($"Change prevented by {nameof(ContentChangingBehaviorContext)}.");
return(false);
}
}
var composer = ComposerFactory.Create(control);
if (composer == null)
{
return(false);
}
return(await composer.ComposeAsync(new ViewCompositionContext(control, dataContext, coordinationArguments)));
}
return(false);
}
/// <inheritdoc />
public async Task <bool> DisplayAsync(object dataContext, ICoordinationArguments coordinationArguments)
{
if (dataContext == null)
{
throw new ArgumentNullException(nameof(dataContext));
}
if (coordinationArguments == null)
{
throw new ArgumentNullException(nameof(coordinationArguments));
}
if (coordinationArguments is WindowArguments arguments)
{
if (!WindowManager.TryGetWindow(arguments.WindowId, out var window))
{
Log.Debug($"Creating window for {dataContext.GetType().FullName} using id [{arguments.WindowId}]");
foreach (var windowFactory in WindowFactories)
{
if (windowFactory.CanCreateWindow(dataContext))
{
window = windowFactory.CreateWindow(dataContext);
WindowManager.RegisterWindow(window, arguments.WindowId);
}
}
if (window == null)
{
Log.Error($"No factory was able to create a window for {dataContext.GetType().FullName}");
return(false);
}
}
var composer = ComposerFactory.Create(window);
if (composer == null)
{
return(false);
}
if (window.DataContext is IBehaviorHost interactive)
{
var context = new ContentChangingBehaviorContext(ServiceContext.ServiceProvider, window.DataContext, dataContext);
await BehaviorRunner.ExecuteAsync(interactive, context);
if (context.Cancelled)
{
Log.Debug($"Change prevented by {nameof(ContentChangingBehaviorContext)}.");
return(false);
}
}
return(await composer.ComposeAsync(new ViewCompositionContext(window, dataContext, coordinationArguments)));
}
Log.Error($"Unable to visualize {dataContext} because {nameof(arguments)} is not of type {typeof(WindowArguments).FullName}");
return(false);
}
/// <inheritdoc />
public ViewCompositionContext([NotNull] FrameworkElement control, [NotNull] object dataContext, [NotNull] ICoordinationArguments coordinationArguments)
{
Control = control ?? throw new ArgumentNullException(nameof(control));
DataContext = dataContext ?? throw new ArgumentNullException(nameof(dataContext));
CoordinationArguments = coordinationArguments ?? throw new ArgumentNullException(nameof(coordinationArguments));
}
public static void SetCoordinationArguments(DependencyObject element, ICoordinationArguments value)
{
element.SetValue(CoordinationArgumentsProperty, value);
}