public virtual void Raise <TViewModel>(string viewName, ViewModelInfo context, Action <TViewModel> onAvailable)
where TViewModel : class
{
Raised?.Invoke(this, new ViewInteractionRequestEventArgs(
viewName, context,
view =>
{
if (onAvailable != null)
{
var viewModel = ViewModelContainerHelper.GetViewModelAs <TViewModel>(view);
onAvailable.Invoke(viewModel);
}
})
);
}
/// <summary>
/// Invokes action
/// </summary>
/// <param name="parameter"></param>
protected override void Invoke(object parameter)
{
if (string.IsNullOrEmpty(ViewName))
{
return;
}
var args = parameter as InteractionRequestedEventArgs;
if (args == null)
{
return;
}
// activate window if it has been created already
if (SingleOnly)
{
var windowController = ServiceLocator.Current.GetInstance <IWindowController>();
if (windowController.GetWindow(ViewName) is T existingWindow)
{
Activate(existingWindow);
return;
}
}
var view = ServiceLocator.Current.GetInstance <IViewModelContainer>(ViewName);
if (view == null)
{
return;
}
var window = CreateWindow(args.Context);
if (Width != 0)
{
window.MinWidth = Width;
window.Width = Width;
}
if (Height != 0)
{
window.MinHeight = Height;
window.Height = Height;
}
if (WindowStyle != null)
{
window.Style = WindowStyle;
}
window.Content = view;
var viewModel = ViewModelContainerHelper.GetViewModelAs <ICloseableViewModel>(view);
if (viewModel != null)
{
OnClosing(window, viewModel);
viewModel.Closed += (s, e) => CloseWindow(window);
if (args.Context != null && viewModel is IConfigurableViewModel)
{
Configure(window, (IConfigurableViewModel)viewModel, args.Context.Content);
}
}
var callback = args.Callback;
OnClosed(window, callback, ViewName);
if (StartupLocation == StartupLocationOption.CenterAssosiated &&
AssociatedObject != null)
{
// If we should center the pop-up over the parent window we subscribe to the SizeChanged event
// so we can change its position after the dimensions are set.
SizeChangedEventHandler sizeHandler = null;
sizeHandler = (o, e) =>
{
window.SizeChanged -= sizeHandler;
try
{
var position = AssociatedObject.PointToScreen(new Point(0, 0));
var top = position.Y + ((AssociatedObject.ActualHeight - window.ActualHeight) / 2);
var left = position.X + ((AssociatedObject.ActualWidth - window.ActualWidth) / 2);
SetWindowPosition(window, left, top);
}
catch (Exception ex)
{
LogProvider.Log.Error(this, $"Window couldn't be centered", ex);
}
};
window.SizeChanged += sizeHandler;
}
Show(window);
}
