private void InstallHTMLHooksForOnchange()
{
// Install onchange hook for <input type=password, text, file>.
String searchCondition = String.Format("{0}!=1", CatStudioConstants.HOOKED_BY_REC_ATTR);
IElementList inputElemNotHooked = this.twebstBrowser.FindAllElements("input", searchCondition);
for (int i = 0; i < inputElemNotHooked.length; ++i)
{
IHTMLElement2 crntNativeElem2 = (IHTMLElement2)inputElemNotHooked[i].nativeElement;
String inputType = ((IHTMLInputElement)crntNativeElem2).type.ToLower();
IHTMLElement crntElem = (IHTMLElement)crntNativeElem2;
if (("text" == inputType) || ("password" == inputType) || ("file" == inputType))
{
IHTMLWindow2 wnd = ((IHTMLDocument2)crntElem.document).parentWindow;
crntNativeElem2.attachEvent("onchange", new HtmlHandler(this.OnHtmlChange, wnd));
}
crntElem.setAttribute(CatStudioConstants.HOOKED_BY_REC_ATTR, "1", 0);
}
// Install onchange hook for <select>.
IElementList selectElemNotHooked = this.twebstBrowser.FindAllElements("select", searchCondition);
InstalHTMLHookOnList(selectElemNotHooked, "onchange");
// Install onchange hook for <textarea>.
IElementList textAreaElemNotHooked = this.twebstBrowser.FindAllElements("textarea", searchCondition);
InstalHTMLHookOnList(textAreaElemNotHooked, "onchange");
}
public static HtmlEventProxy Create(string eventName, object htmlElement, EventHandler eventHandler)
{
IHTMLElement2 elem = (IHTMLElement2)htmlElement;
HtmlEventProxy newProxy = new HtmlEventProxy(eventName, elem, eventHandler);
elem.attachEvent(eventName, newProxy);
return(newProxy);
}
public static HtmlEventObject SubscribeTo(this IHTMLElement2 element, HtmlEvents eventType, HtmlEventObject handlerObj)
{
try
{
element?.attachEvent(eventType.Name(), handlerObj);
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
return(handlerObj);
}
private void InstalHTMLHookOnList(IElementList elemList, String evtName)
{
for (int i = 0; i < elemList.length; ++i)
{
IHTMLElement2 crntNativeElem2 = (IHTMLElement2)elemList[i].nativeElement;
IHTMLElement crntElem = (IHTMLElement)crntNativeElem2;
IHTMLWindow2 wnd = ((IHTMLDocument2)crntElem.document).parentWindow;
crntNativeElem2.attachEvent(evtName, new HtmlHandler(this.OnHtmlChange, wnd));
crntElem.setAttribute(CatStudioConstants.HOOKED_BY_REC_ATTR, "1", 0);
}
}
public static bool SubscribeTo(this IHTMLElement2 element, EventType eventType, IControlHtmlEvent handlerObj)
{
try
{
return(element.IsNull()
? false
: element.attachEvent(eventType.Name(), handlerObj));
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
return(false);
}
public static bool SubscribeTo(this IHTMLElement2 element, string @event, object pdisp)
{
try
{
return(element.IsNull()
? false
: element.attachEvent(@event, pdisp));
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
return(false);
}