void _browser_StartNewWindow(object sender, BrowserExtendedNavigatingEventArgs e)
{
// Here we do the pop-up blocker work
// Note that in Windows 2000 or lower this event will fire, but the
// event arguments will not contain any useful information
// for blocking pop-ups.
// There are 4 filter levels.
// None: Allow all pop-ups
// Low: Allow pop-ups from secure sites
// Medium: Block most pop-ups
// High: Block all pop-ups (Use Ctrl to override)
// We need the instance of the main form, because this holds the instance
// to the WindowManager.
GujiaDataForm mf = GetMainFormFromControl(sender as Control);
if (mf == null)
return;
// Allow a popup when there is no information available or when the Ctrl key is pressed
bool allowPopup = (e.NavigationContext == UrlContext.None) || ((e.NavigationContext & UrlContext.OverrideKey) == UrlContext.OverrideKey);
if (!allowPopup)
{
// Give None, Low & Medium still a chance.
switch (SettingsHelper.Current.FilterLevel)
{
case PopupBlockerFilterLevel.None:
allowPopup = true;
break;
case PopupBlockerFilterLevel.Low:
// See if this is a secure site
if (this.WebBrowser.EncryptionLevel != WebBrowserEncryptionLevel.Insecure)
allowPopup = true;
else
// Not a secure site, handle this like the medium filter
goto case PopupBlockerFilterLevel.Medium;
break;
case PopupBlockerFilterLevel.Medium:
// This is the most dificult one.
// Only when the user first inited and the new window is user inited
if ((e.NavigationContext & UrlContext.UserFirstInited) == UrlContext.UserFirstInited && (e.NavigationContext & UrlContext.UserInited) == UrlContext.UserInited)
allowPopup = true;
break;
}
}
if (allowPopup)
{
// Check wheter it's a HTML dialog box. If so, allow the popup but do not open a new tab
if (!((e.NavigationContext & UrlContext.HtmlDialog) == UrlContext.HtmlDialog))
{
ExtendedWebBrowser ewb = mf.WindowManager.New(false);
// The (in)famous application object
e.AutomationObject = ewb.Application;
}
}
else
// Here you could notify the user that the pop-up was blocked
e.Cancel = true;
}
// NewWindow3 event, used on Windows XP SP2 and higher
public void NewWindow3(ref object ppDisp, ref bool Cancel, uint dwFlags, string bstrUrlContext, string bstrUrl)
{
BrowserExtendedNavigatingEventArgs args = new BrowserExtendedNavigatingEventArgs(ppDisp, new Uri(bstrUrl), null, (UrlContext)dwFlags);
_Browser.OnStartNewWindow(args);
Cancel = args.Cancel;
ppDisp = args.AutomationObject;
}
//Implement whichever events you wish
public void BeforeNavigate2(object pDisp, ref object URL, ref object flags, ref object targetFrameName, ref object postData, ref object headers, ref bool cancel)
{
Uri urlUri = new Uri(URL.ToString());
string tFrame = null;
if (targetFrameName != null)
tFrame = targetFrameName.ToString();
BrowserExtendedNavigatingEventArgs args = new BrowserExtendedNavigatingEventArgs(pDisp, urlUri, tFrame, UrlContext.None);
_Browser.OnStartNavigate(args);
cancel = args.Cancel;
pDisp = args.AutomationObject;
}
//The NewWindow2 event, used on Windows XP SP1 and below
public void NewWindow2(ref object pDisp, ref bool cancel)
{
BrowserExtendedNavigatingEventArgs args = new BrowserExtendedNavigatingEventArgs(pDisp, null, null, UrlContext.None);
_Browser.OnStartNewWindow(args);
cancel = args.Cancel;
pDisp = args.AutomationObject;
}
/// <summary>
/// Raises the <see cref="StartNewWindow"/> event
/// </summary>
/// <exception cref="ArgumentNullException">Thrown when BrowserExtendedNavigatingEventArgs is null</exception>
protected void OnStartNewWindow(BrowserExtendedNavigatingEventArgs e)
{
if (e == null)
throw new ArgumentNullException("e");
if (this.StartNewWindow != null)
this.StartNewWindow(this, e);
}
