protected HtmlToClrEventProxy AddEventProxy(string eventName, EventHandler eventHandler) {
if (attachedEventList == null) {
attachedEventList = new Dictionary<EventHandler, HtmlToClrEventProxy>();
}
HtmlToClrEventProxy proxy = new HtmlToClrEventProxy(this, eventName, eventHandler);
attachedEventList[eventHandler] = proxy;
return proxy;
}
public override void DetachEventHandler(string eventName, EventHandler eventHandler)
{
HtmlToClrEventProxy pdisp = base.RemoveEventProxy(eventHandler);
if (pdisp != null)
{
((System.Windows.Forms.UnsafeNativeMethods.IHTMLDocument3) this.NativeHtmlDocument2).DetachEvent(eventName, pdisp);
}
}
/// Support IHTMLWindow3.DetachHandler
public override void DetachEventHandler(string eventName, System.EventHandler eventHandler)
{
HtmlToClrEventProxy proxy = RemoveEventProxy(eventHandler);
if (proxy != null)
{
((UnsafeNativeMethods.IHTMLWindow3) this.NativeHtmlWindow).DetachEvent(eventName, proxy);
}
}
public override void DetachEventHandler(string eventName, EventHandler eventHandler)
{
HtmlToClrEventProxy proxy = RemoveEventProxy(eventHandler);
if (proxy != null)
{
((IHTMLDocument3)NativeHtmlDocument2).DetachEvent(eventName, proxy);
}
}
public override void DetachEventHandler(string eventName, EventHandler eventHandler)
{
HtmlToClrEventProxy proxy = RemoveEventProxy(eventHandler);
if (proxy is not null)
{
((IHTMLWindow3)NativeHtmlWindow).DetachEvent(eventName, proxy);
}
}
public override void AttachEventHandler(string eventName, EventHandler eventHandler)
{
// IE likes to call back on an IDispatch of DISPID=0 when it has an event,
// the HtmlToClrEventProxy helps us fake out the CLR so that we can call back on
// our EventHandler properly.
HtmlToClrEventProxy proxy = AddEventProxy(eventName, eventHandler);
((IHTMLDocument3)NativeHtmlDocument2).AttachEvent(eventName, proxy);
}
protected HtmlToClrEventProxy RemoveEventProxy(EventHandler eventHandler)
{
if ((this.attachedEventList != null) && this.attachedEventList.ContainsKey(eventHandler))
{
HtmlToClrEventProxy proxy = this.attachedEventList[eventHandler];
this.attachedEventList.Remove(eventHandler);
return(proxy);
}
return(null);
}
protected HtmlToClrEventProxy AddEventProxy(string eventName, EventHandler eventHandler)
{
if (attachedEventList == null)
{
attachedEventList = new Dictionary <EventHandler, HtmlToClrEventProxy>();
}
HtmlToClrEventProxy proxy = new HtmlToClrEventProxy(this, eventName, eventHandler);
attachedEventList[eventHandler] = proxy;
return(proxy);
}
/// Support IHtmlDocument3.AttachHandler
public override void AttachEventHandler(string eventName, System.EventHandler eventHandler)
{
// IE likes to call back on an IDispatch of DISPID=0 when it has an event,
// the HtmlToClrEventProxy helps us fake out the CLR so that we can call back on
// our EventHandler properly.
HtmlToClrEventProxy proxy = AddEventProxy(eventName, eventHandler);
bool success = ((UnsafeNativeMethods.IHTMLWindow3) this.NativeHtmlWindow).AttachEvent(eventName, proxy);
Debug.Assert(success, "failed to add event");
}
public virtual void DisconnectFromEvents()
{
if (this.attachedEventList != null)
{
EventHandler[] array = new EventHandler[this.attachedEventList.Count];
this.attachedEventList.Keys.CopyTo(array, 0);
foreach (EventHandler handler in array)
{
HtmlToClrEventProxy proxy = this.attachedEventList[handler];
this.DetachEventHandler(proxy.EventName, handler);
}
}
}
/// disconnect from connectionpoint cookie
/// inheriting classes should override to disconnect from ConnectionPoint and call base.
public virtual void DisconnectFromEvents()
{
if (attachedEventList != null)
{
EventHandler[] events = new EventHandler[attachedEventList.Count];
attachedEventList.Keys.CopyTo(events, 0);
foreach (EventHandler eh in events)
{
HtmlToClrEventProxy proxy = attachedEventList[eh];
DetachEventHandler(proxy.EventName, eh);
}
}
}
protected HtmlToClrEventProxy RemoveEventProxy(EventHandler eventHandler)
{
if (attachedEventList == null)
{
return(null);
}
if (attachedEventList.ContainsKey(eventHandler))
{
HtmlToClrEventProxy proxy = attachedEventList[eventHandler] as HtmlToClrEventProxy;
attachedEventList.Remove(eventHandler);
return(proxy);
}
return(null);
}
public override void AttachEventHandler(string eventName, EventHandler eventHandler)
{
HtmlToClrEventProxy pdisp = base.AddEventProxy(eventName, eventHandler);
((System.Windows.Forms.UnsafeNativeMethods.IHTMLDocument3) this.NativeHtmlDocument2).AttachEvent(eventName, pdisp);
}