public virtual void AttachEventHandlerToDocument(THtmlDocument htmlDocument, string eventName,
object firstArgument, Func <bool> customEventDelegate, int functionHash,
Func <CustomWebBrowserControlEventHandler> getCustomEventHandler,
Action <CustomWebBrowserControlEventHandler> setCustomEventHandler)
{
if (!Enabled)
{
return;
}
var document = htmlDocument;
if (document != null)
{
var formattableString = $"{DocumentEventPrefix}.{eventName}";
var customWebBrowserControlEventHandler = getCustomEventHandler();
if (customWebBrowserControlEventHandler == null)
{
var customEventDelegates = new List <Tuple <string, Delegate, int> >();
setCustomEventHandler(new CustomWebBrowserControlEventHandler(customEventDelegates));
customWebBrowserControlEventHandler = getCustomEventHandler();
}
Delegate @delegate;
var eventInfo = EventHandlerAttacher.GetEventInfo(document, eventName);
if (eventInfo != null)
{
var eventInfoEventHandlerType = eventInfo.EventHandlerType;
if (!customWebBrowserControlEventHandler.EventHandlerIsAttached(formattableString, functionHash,
eventInfoEventHandlerType, firstArgument, customEventDelegate, out @delegate))
{
eventInfo.AddEventHandler(document, @delegate);
customWebBrowserControlEventHandler.TrackHandler(formattableString, @delegate, functionHash);
}
}
}
}
public virtual void RemoveEventHandlerToControl(THtmlDocument htmlDocument, string controlId,
string eventName, int functionHash,
Func <CustomWebBrowserControlEventHandler> getCustomEventHandler)
{
if (!Enabled)
{
return;
}
var customWebBrowserControlEventHandler = getCustomEventHandler();
if (customWebBrowserControlEventHandler == null)
{
return;
}
var element = GetElementById(htmlDocument, controlId);
if (element != null)
{
var eventInfo = EventHandlerAttacher.GetEventInfo(element, eventName);
if (eventInfo != null)
{
var formattableString = $"{controlId}.{eventName}";
var @delegate = customWebBrowserControlEventHandler
.GetDelegate(formattableString, eventInfo.EventHandlerType, null, null, functionHash);
eventInfo.RemoveEventHandler(element, @delegate);
customWebBrowserControlEventHandler.UntrackHandler(formattableString, @delegate, functionHash);
}
}
}
public virtual void AttachEventHandlerToControl(THtmlDocument htmlDocument, string controlId,
string eventName,
object firstArgument, Func <bool> customEventDelegate, int functionHash,
Func <CustomWebBrowserControlEventHandler> getCustomEventHandler,
Action <CustomWebBrowserControlEventHandler> setCustomEventHandler, bool removeHandlers = false)
{
if (!Enabled)
{
return;
}
DetachEventHandlersFromControl(htmlDocument, controlId, removeHandlers, eventName);
if (htmlDocument != null)
{
var element = GetElementById(htmlDocument, controlId);
var formattableString = $"{controlId}.{eventName}";
var customWebBrowserControlEventHandler = getCustomEventHandler();
if (customWebBrowserControlEventHandler == null)
{
var customEventDelegates = new List <Tuple <string, Delegate, int> >();
setCustomEventHandler(new CustomWebBrowserControlEventHandler(customEventDelegates));
customWebBrowserControlEventHandler = getCustomEventHandler();
}
if (element != null)
{
Delegate @delegate;
var eventInfo = EventHandlerAttacher.GetEventInfo(element, eventName);
if (eventInfo != null)
{
var eventInfoEventHandlerType = eventInfo.EventHandlerType;
if (!customWebBrowserControlEventHandler.EventHandlerIsAttached(formattableString, functionHash,
eventInfoEventHandlerType, firstArgument, customEventDelegate, out @delegate))
{
eventInfo.AddEventHandler(element, @delegate);
customWebBrowserControlEventHandler.TrackHandler(formattableString, @delegate,
functionHash);
}
}
}
}
}
public virtual void RemoveEventHandlerToDocument(THtmlDocument htmlDocument, string eventName,
int functionHash, Func <CustomWebBrowserControlEventHandler> getCustomEventHandler)
{
if (!Enabled)
{
return;
}
var customWebBrowserControlEventHandler = getCustomEventHandler();
if (customWebBrowserControlEventHandler == null)
{
return;
}
var evn = htmlDocument;
if (evn != null)
{
var eventInfo = EventHandlerAttacher.GetEventInfo(evn, eventName);
if (eventInfo != null)
{
var formattableString = $"{DocumentEventPrefix}.{eventName}";
var @delegate = customWebBrowserControlEventHandler
.GetDelegate(formattableString, eventInfo.EventHandlerType, null, null, functionHash);
var dictionary = customWebBrowserControlEventHandler.Delegates;
if (@delegate != null && dictionary.ContainsKey(formattableString, functionHash) &&
dictionary.Items(formattableString, @delegate, functionHash).Any())
{
try
{
eventInfo.RemoveEventHandler(evn, @delegate);
}
catch (Exception e)
{
Debug.Write(e);
}
}
customWebBrowserControlEventHandler.UntrackHandler(formattableString, @delegate, functionHash);
}
}
}
