help2registrywalker.cs

c#源代码

/* ***********************************************************
 *
 * Help 2.0 Environment for SharpDevelop
 * Help 2.0 Registry Walker
 * Copyright (c) 2005, Mathias Simmack. All rights reserved.
 *
 * ********************************************************* */

//#define Description_UseCollectionDescription 

namespace HtmlHelp2Service
{
	using System;
	using System.Windows.Forms;
	using MSHelpServices;

	public sealed class Help2RegistryWalker
	{
		public static void BuildNamespacesList(ComboBox help2Collections, string selectedHelp2Collection)
		{
			if(help2Collections == null)
				return;

			help2Collections.Items.Clear();
			help2Collections.BeginUpdate();

			try
			{
				string currentDescription  = "";

				HxRegistryWalker regWalker = new HxRegistryWalker();
				IHxRegNamespaceList namespaces = regWalker.get_RegisteredNamespaceList("");

				foreach(IHxRegNamespace currentNamespace in namespaces)
				{
					#if Description_UseCollectionDescription
					help2Collections.Items.Add((string)CollectionInfoClass.GetCollectionTitle(currentNamespace.Name));
					if(selectedHelp2Collection != "" &&
					   String.Compare(selectedHelp2Collection, currentNamespace.Name) == 0)
					{
						currentDescription = CollectionInfoClass.GetCollectionTitle(currentNamespace.Name);
					}
					#else
					help2Collections.Items.Add((string)currentNamespace.GetProperty(HxRegNamespacePropId.HxRegNamespaceDescription));
					if(selectedHelp2Collection != "" &&
					   String.Compare(selectedHelp2Collection, currentNamespace.Name) == 0)
					{
						currentDescription = (string)currentNamespace.GetProperty(HxRegNamespacePropId.HxRegNamespaceDescription);
					}
					#endif
				}

				if(currentDescription != "") help2Collections.SelectedIndex = help2Collections.Items.IndexOf(currentDescription);
					else help2Collections.SelectedIndex = 0;
			}
			catch {}

			help2Collections.EndUpdate();
		}

		public static string GetNamespaceName(string namespaceDescription)
		{
			try
			{
				HxRegistryWalker regWalker     = new HxRegistryWalker();
				IHxRegNamespaceList namespaces = regWalker.get_RegisteredNamespaceList("");
				foreach(IHxRegNamespace currentNamespace in namespaces)
				{
					#if Description_UseCollectionDescription
					if(String.Compare(namespaceDescription, CollectionInfoClass.GetCollectionTitle(currentNamespace.Name)) == 0)
					{
						return currentNamespace.Name;
					}
					#else
					if(String.Compare(namespaceDescription, (string)currentNamespace.GetProperty(HxRegNamespacePropId.HxRegNamespaceDescription)) == 0)
					{
						return currentNamespace.Name;
					}
					#endif
				}

				return "";
			}
			catch
			{
				return "";
			}
		}

		public static string GetFirstNamespace(string defaultNamespaceName)
		{
			try
			{
				HxRegistryWalker regWalker     = new HxRegistryWalker();
				IHxRegNamespaceList namespaces = regWalker.get_RegisteredNamespaceList("");
				foreach(IHxRegNamespace currentNamespace in namespaces)
				{
					if(String.Compare(defaultNamespaceName, currentNamespace.Name) == 0)
					{
						return defaultNamespaceName;
					}
				}

				return namespaces.ItemAt(1).Name;
			}
			catch
			{
				return "";
			}
		}

		public Help2RegistryWalker()
		{
		}
	}

	#if Description_UseCollectionDescription
	public sealed class CollectionInfoClass
	{
		public CollectionInfoClass()
		{
		}

		public static string GetCollectionTitle(string namespaceName)
		{
			try
			{
				HxSession session        = new HxSession();
				session.Initialize(String.Format("ms-help://{0}", namespaceName), 0);
				IHxCollection collection = session.Collection;
				return collection.Title;
			}
			catch
			{
				return "";
			}
		}
	}
	#endif
}