/// <summary>
/// Gets the service provider for this item.
/// </summary>
public static IServiceProvider GetServiceProvider(this IVsHierarchyItem item)
{
Ole.IServiceProvider oleSp;
if (item.HierarchyIdentity.IsNestedItem &&
ErrorHandler.Succeeded(item.HierarchyIdentity.NestedHierarchy.GetSite(out oleSp)) &&
oleSp != null)
{
return(new ServiceProvider(oleSp));
}
if (ErrorHandler.Succeeded(item.HierarchyIdentity.Hierarchy.GetSite(out oleSp)) &&
oleSp != null)
{
return(new ServiceProvider(oleSp));
}
// Try the hierarchy root as a fallback.
var root = item.GetRoot();
if (root != null &&
ErrorHandler.Succeeded(root.HierarchyIdentity.Hierarchy.GetSite(out oleSp)) &&
oleSp != null)
{
return(new ServiceProvider(oleSp));
}
// Try the hierarchy top-most node as a fallback (this would be the solution itself)
root = item.GetTopMost();
if (root != null &&
ErrorHandler.Succeeded(root.HierarchyIdentity.Hierarchy.GetSite(out oleSp)) &&
oleSp != null)
{
return(new ServiceProvider(oleSp));
}
// Default to a global service provider provided by VS shell.
// TODO: may require us to switch to the UI thread to get the right one.
return(ServiceProvider.GlobalProvider);
}