/// <summary>
/// Hooks up the element with the given named event.
/// </summary>
/// <param name="obj">
/// The object to hook the event to.
/// </param>
/// <param name="eventName">
/// The name of the event to hook up.
/// </param>
public void HookEvent(object obj, string eventName)
{
this.eventInfo = GetEventInfo(obj.GetType(), eventName);
if (this.eventInfo != null)
{
this.handler = this.GetEventHandler(this.eventInfo);
if (this.eventInfo.AddMethod.ReturnType == typeof(EventRegistrationToken))
{
WindowsRuntimeMarshal.AddEventHandler(
e =>
{
this.eventRegistrationToken =
(EventRegistrationToken)this.eventInfo.AddMethod.Invoke(obj, new object[] { e });
return(this.eventRegistrationToken.Value);
},
e => this.eventInfo.RemoveMethod.Invoke(obj, new object[] { e }),
this.handler);
}
else
{
this.eventInfo.AddMethod.Invoke(obj, new object[] { this.handler });
}
}
}
/// <summary>
/// Adds the specified event handler to the specified element.
/// </summary>
/// <param name="element">The element to which the specified event handler is added.</param>
/// <param name="handler">The event handler to add.</param>
/// <param name="handledEventsToo">
/// <c>true</c> to register the handler such that it is invoked even when the
/// event is marked handled in its event data; <c>false</c> to register the
/// handler with the default condition that it will not be invoked if the event
/// is already marked handled.
/// </param>
protected override void AddEventHandler(FrameworkElement element, Delegate handler, bool handledEventsToo)
{
if (element == null || handler == null || isEventHandlerAdded)
{
return;
}
if (IsRoutedEventHandler(handler))
{
element.AddHandler(routedEvent, handler, handledEventsToo);
}
else if (eventInfo != null)
{
token = (EventRegistrationToken?)(eventInfo.AddMethod.Invoke(element, new object[] { handler }));
}
isEventHandlerAdded = true;
}
public ContentDialogWrapper(FrameworkElement window)
{
_window = window;
if (_closingEvent == null)
{
_closingEvent = window.GetType().GetRuntimeEvent("Closing");
}
Delegate handler = ServiceProvider
.ReflectionManager
.TryCreateDelegate(_closingEvent.EventHandlerType, this, OnClosingMethod);
if (handler == null)
{
Tracer.Error("The provider cannot create delegate for event '{0}'", _closingEvent.EventHandlerType);
return;
}
_token = (EventRegistrationToken)_closingEvent.AddMethod.InvokeEx(window, handler);
}
/// <summary>
/// Unhooks the element with the given named event.
/// </summary>
/// <param name="obj">
/// The object to unhook the event from.
/// </param>
public void UnhookEvent(object obj)
{
if (this.eventInfo != null && this.handler != null)
{
if (this.eventInfo.AddMethod.ReturnType == typeof(EventRegistrationToken))
{
if (this.eventRegistrationToken != null)
{
this.eventInfo.RemoveMethod.Invoke(obj, new object[] { this.eventRegistrationToken });
this.eventRegistrationToken = null;
}
}
else
{
this.eventInfo.RemoveMethod.Invoke(obj, new object[] { this.handler });
}
this.handler = null;
this.eventInfo = null;
}
}
public ContentDialogWrapper(FrameworkElement window)
{
_window = window;
if (_closingEvent == null)
_closingEvent = window.GetType().GetRuntimeEvent("Closing");
Delegate handler = ServiceProvider
.ReflectionManager
.TryCreateDelegate(_closingEvent.EventHandlerType, this, OnClosingMethod);
if (handler == null)
{
Tracer.Error("The provider cannot create delegate for event '{0}'", _closingEvent.EventHandlerType);
return;
}
_token = (EventRegistrationToken)_closingEvent.AddMethod.InvokeEx(window, handler);
}
/// <summary>
/// Unhooks the element with the given named event.
/// </summary>
/// <param name="obj">
/// The object to unhook the event from.
/// </param>
public void UnhookEvent(object obj)
{
if (this.eventInfo != null && this.handler != null)
{
if (this.eventInfo.AddMethod.ReturnType == typeof(EventRegistrationToken))
{
if (this.eventRegistrationToken != null)
{
this.eventInfo.RemoveMethod.Invoke(obj, new object[] { this.eventRegistrationToken });
this.eventRegistrationToken = null;
}
}
else
{
this.eventInfo.RemoveMethod.Invoke(obj, new object[] { this.handler });
}
this.handler = null;
this.eventInfo = null;
}
}
/// <summary>
/// Hooks up the element with the given named event.
/// </summary>
/// <param name="obj">
/// The object to hook the event to.
/// </param>
/// <param name="eventName">
/// The name of the event to hook up.
/// </param>
public void HookEvent(object obj, string eventName)
{
this.eventInfo = GetEventInfo(obj.GetType(), eventName);
if (this.eventInfo != null)
{
this.handler = this.GetEventHandler(this.eventInfo);
if (this.eventInfo.AddMethod.ReturnType == typeof(EventRegistrationToken))
{
WindowsRuntimeMarshal.AddEventHandler(
e =>
{
this.eventRegistrationToken =
(EventRegistrationToken)this.eventInfo.AddMethod.Invoke(obj, new object[] { e });
return this.eventRegistrationToken.Value;
},
e => this.eventInfo.RemoveMethod.Invoke(obj, new object[] { e }),
this.handler);
}
else
{
this.eventInfo.AddMethod.Invoke(obj, new object[] { this.handler });
}
}
}
