public void DesignSurface_OnLoaded_Invoke_Success(LoadedEventArgs eventArgs)
{
var surface = new SubDesignSurface();
// No handler.
surface.OnLoaded(eventArgs);
// Handler.
int callCount = 0;
LoadedEventHandler handler = (sender, e) =>
{
Assert.Equal(surface, sender);
Assert.Same(eventArgs, e);
callCount++;
};
surface.Loaded += handler;
surface.OnLoaded(eventArgs);
Assert.Equal(1, callCount);
// Should not call if the handler is removed.
surface.Loaded -= handler;
surface.OnLoaded(eventArgs);
Assert.Equal(1, callCount);
}
private static void OnLoadDetectionChanged(DependencyObject dpo, DependencyPropertyChangedEventArgs ev)
{
if ((dpo is TextBlock t) &&
t.Name == MarkupExtensionParser.MarkupParserHelperId)
{
return;
}
if ((bool)ev.NewValue == true)
{
if (dpo is FrameworkElement frameworkElement)
{
frameworkElement.Loaded += LoadedEventHandler;
frameworkElement.Unloaded += UnloadedEventHandler;
frameworkElement.Initialized += FrameworkElement_Initialized;
if (frameworkElement.IsLoaded)
{
LoadedEventHandler.Invoke(frameworkElement, new RoutedEventArgs());
}
}
else if (dpo is FrameworkContentElement frameworkContentElement)
{
frameworkContentElement.Loaded += LoadedEventHandler;
frameworkContentElement.Unloaded += UnloadedEventHandler;
frameworkContentElement.Initialized += FrameworkElement_Initialized;
if (frameworkContentElement.IsLoaded)
{
LoadedEventHandler.Invoke(frameworkContentElement, new RoutedEventArgs());
}
}
}
else
{
if (dpo is FrameworkElement frameworkElement)
{
frameworkElement.Unloaded -= UnloadedEventHandler;
frameworkElement.Loaded -= LoadedEventHandler;
frameworkElement.Initialized -= FrameworkElement_Initialized;
}
else if (dpo is FrameworkContentElement frameworkContentElement)
{
frameworkContentElement.Unloaded -= UnloadedEventHandler;
frameworkContentElement.Loaded -= LoadedEventHandler;
frameworkContentElement.Initialized -= FrameworkElement_Initialized;
}
}
}
private static void OnLoadDetectionChanged(DependencyObject dpo, DependencyPropertyChangedEventArgs ev)
{
if ((bool)ev.NewValue == true)
{
if (dpo is FrameworkElement frameworkElement)
{
frameworkElement.Loaded += LoadedEventHandler;
frameworkElement.Unloaded += UnloadedEventHandler;
//frameworkElement.Initialized += FrameworkElement_Initialized;
if (frameworkElement.IsLoaded)
{
LoadedEventHandler.Invoke(frameworkElement, new RoutedEventArgs());
}
}
else if (dpo is FrameworkContentElement frameworkContentElement)
{
frameworkContentElement.Loaded += LoadedEventHandler;
frameworkContentElement.Unloaded += UnloadedEventHandler;
//frameworkContentElement.Initialized += FrameworkElement_Initialized;
if (frameworkContentElement.IsLoaded)
{
LoadedEventHandler.Invoke(frameworkContentElement, new RoutedEventArgs());
}
}
}
else
{
if (dpo is FrameworkElement frameworkElement)
{
frameworkElement.Unloaded -= UnloadedEventHandler;
frameworkElement.Loaded -= LoadedEventHandler;
frameworkElement.Initialized -= FrameworkElement_Initialized;
}
else if (dpo is FrameworkContentElement frameworkContentElement)
{
frameworkContentElement.Unloaded -= UnloadedEventHandler;
frameworkContentElement.Loaded -= LoadedEventHandler;
frameworkContentElement.Initialized -= FrameworkElement_Initialized;
}
}
}
protected FileLoader(Dispatcher dispatcher)
{
this.dispatcher = dispatcher;
this.LoadedMainEvent = RaiseLoadedMainThread;
this.loadFailedMainEvent = RaiseLoadFailedMainThread;
}
