private HelpService(HelpService parentService, IVsUserContext subContext, int cookie, IServiceProvider provider, HelpContextType priority)
{
this.context = subContext;
this.provider = provider;
this.cookie = cookie;
this.parentService = parentService;
this.priority = priority;
}
private IHelpService CreateLocalContext(HelpContextType contextType, bool recreate, out IVsUserContext localContext, out int cookie)
{
cookie = 0;
localContext = null;
if (provider == null)
{
return(null);
}
localContext = null;
IVsMonitorUserContext muc = (IVsMonitorUserContext)provider.GetService(typeof(IVsMonitorUserContext));
if (muc != null)
{
localContext = muc.CreateEmptyContext();
}
if (localContext != null)
{
int priority = 0;
switch (contextType)
{
case HelpContextType.ToolWindowSelection:
priority = tagVsUserContextPriority.VSUC_Priority_ToolWndSel;
break;
case HelpContextType.Selection:
priority = tagVsUserContextPriority.VSUC_Priority_Selection;
break;
case HelpContextType.Window:
priority = tagVsUserContextPriority.VSUC_Priority_Window;
break;
case HelpContextType.Ambient:
priority = tagVsUserContextPriority.VSUC_Priority_Ambient;
break;
}
cookie = GetUserContext().AddSubcontext(localContext, priority);
if (cookie != 0)
{
if (!recreate)
{
HelpService newHs = new HelpService(this, localContext, cookie, provider, contextType);
if (subContextList == null)
{
subContextList = new ArrayList();
}
subContextList.Add(newHs);
return(newHs);
}
}
}
return(null);
}
/// <include file='doc\HelpService.uex' path='docs/doc[@for="HelpService.Dispose"]/*' />
/// <devdoc>
/// Disposes this object.
/// </devdoc>
public virtual void Dispose()
{
if (subContextList != null && subContextList.Count > 0)
{
foreach (HelpService hs in subContextList)
{
hs.parentService = null;
if (context != null)
{
context.RemoveSubcontext(hs.cookie);
}
hs.Dispose();
}
subContextList = null;
}
if (parentService != null)
{
IHelpService parent = parentService;
parentService = null;
parent.RemoveLocalContext(this);
}
if (provider != null)
{
IDesignerHost host = (IDesignerHost)provider.GetService(typeof(IDesignerHost));
if (host != null)
{
host.Activated -= new EventHandler(this.OnDesignerActivate);
}
provider = null;
}
if (context != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(context);
context = null;
}
this.cookie = 0;
}