/// <summary>this is an entry point for all objects handlers</summary>
/// <param name="objectHashCode"> hash code of the object</param>
/// <param name="eventName"> event name</param>
/// <param name="parameters">event parameters</param>
/// <returns></returns>
public static void handleDotNetEvent(int objectHashCode, String eventName, Object[] parameters)
{
Object invokedObject = DNManager.getInstance().DNObjectEventsCollection.getObject(objectHashCode);
GuiMgControl mgControl = null;
bool raiseRuntimeEvent = true;
Manager.ContextIDGuard contextIDGuard = null;
// If Object is a control and it is 'our' control (not created dynamically, decided by .Tag)
if (invokedObject is Control && ((Control)invokedObject).Tag != null)
{
ControlsMap controlsMap = ControlsMap.getInstance();
MapData mapData = controlsMap.getControlMapData((Control)invokedObject);
if (mapData == null)
{
return;
}
mgControl = mapData.getControl();
contextIDGuard = new Manager.ContextIDGuard(Manager.GetContextID(mgControl));
//first execute default magic handling of event
EventType type = DNControlEvents.getStandardEvent(eventName);
if (type != EventType.NONE && parameters.Length == 2)
{
DefaultHandler.getInstance().handleEvent(type, invokedObject, (EventArgs)parameters[1]);
}
if (eventName == "KeyDown") //QCR #736734 KeyDown is handled from Filter.cs on WM_KEYDOWN - do not duplicate the event
{
raiseRuntimeEvent = false;
}
else if (eventName == "Disposed")
{
// a Disposed event for a control can't be handled as a runtime-event after the task/form are closed
raiseRuntimeEvent = false;
}
else
{
// raise .NET runtime event only if hooked from the application (i.e. have a handler in the task)
List <String> applicationHookedDNeventsNames = ((TagData)((Control)invokedObject).Tag).ApplicationHookedDNeventsNames;
if (applicationHookedDNeventsNames == null || !applicationHookedDNeventsNames.Contains(eventName))
{
raiseRuntimeEvent = false;
}
}
}
// raise .NET event
if (raiseRuntimeEvent)
{
Events.OnDotNetEvent(invokedObject, mgControl, eventName, parameters);
}
if (contextIDGuard != null)
{
contextIDGuard.Dispose();
}
}
private void handlePredefinedEvent(string eventName, object sender, EventArgs e)
{
GuiMgControl guiMgCtrl = null;
Debug.Assert(sender is Control && DNControlEvents.isPredefinedEvent(eventName));
ControlsMap controlsMap = ControlsMap.getInstance();
MapData mapData = controlsMap.getMapData(sender);
if (mapData != null)
{
guiMgCtrl = mapData.getControl();
}
Events.OnDotNetEvent(sender, guiMgCtrl, eventName, new[] { sender, e });
}
/// <summary> adds events for control</summary>
/// <param name="control"></param>
/// <param name="dnEventsNames">comma-delimited string of events that should be raised for the object</param>
internal void addHandler(Control control, List <String> dnEventsNames)
{
DNObjectEventsCollection.ObjectEvents objectEvents = DNManager.getInstance().DNObjectEventsCollection.checkAndCreateObjectEvents(control);
foreach (string item in dnEventsNames)
{
ReflectionServices.addHandler(item, control, objectEvents, true);
}
ICollection <String> standartEvents = DNControlEvents.getStandardEventsNames();
foreach (string item in standartEvents)
{
if (!dnEventsNames.Contains(item))
{
ReflectionServices.addHandler(item, control, objectEvents, false);
}
}
}
/// <summary>add handler for the .NET object:
/// create a dynamic delegate according to the given event type
/// add method body to the delegate
/// in the method body call DefaultDotNetHandler which will handle the event</summary>
/// <param name="eventName"> name of the event</param>
/// <param name="objectToHook"> object to hook</param>
/// <param name="objectEvents"> once registered, events are added to this collection</param>
/// <param name="reportErrors"> indicates whether to log errors while hooking event. There are some
/// default events that are hooked for each .NET control (see DNControlEvents._standardControlEvents).
/// Errors occurring while hooking these events should not be reported.</param>
/// TODO handle static events
internal static void addHandler(String eventName, Object objectToHook, DNObjectEventsCollection.ObjectEvents objectEvents, bool reportErrors)
{
//subscribe for events only once , check if handler already added
if (objectEvents.delegateExist(eventName))
{
return;
}
Type type = objectToHook.GetType();
// Get an EventInfo representing the event, and get the type of delegate that handles the event.
EventInfo eventInfo = type.GetEvent(eventName);
if (eventInfo != null)
{
// Get the "add" accessor of the event and invoke it late-bound, passing in the delegate instance.
// This is equivalent to using the += operator in C#, or AddHandler in Visual Basic.
// The instance on which the "add" accessor is invoked is the form;
// the arguments must be passed as an array.
MethodInfo addHandler = eventInfo.GetAddMethod();
Delegate eventHandler = null;
try
{
#if !PocketPC
eventHandler = createDynamicDelegate(objectToHook.GetHashCode(), eventInfo);
#else
if (objectToHook is Control)
{
eventHandler = DNControlEvents.getPredefinedEvent(eventName);
}
#endif
try
{
addHandler.Invoke(objectToHook, new Object[] { eventHandler });
}
catch (Exception e)
{
if (e is TargetInvocationException && e.InnerException != null)
{
throw e.InnerException;
}
else
{
throw e;
}
}
objectEvents.add(eventName, eventHandler);
}
catch (Exception exception)
{
if (reportErrors)
{
DNException dnException = Manager.GetCurrentRuntimeContext().DNException;
dnException.set(exception);
}
}
}
else
{
if (reportErrors)
{
Events.WriteExceptionToLog(String.Format("Event type \"{0}\" not supported", eventName));
}
}
}
