editactionloader.cs

c#精彩编程百例（源代码）

// EditActionLoader.cs
// Copyright (C) 2001 Mike Krueger
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

using System;
using System.IO;
using System.Collections;
using System.Diagnostics;
using System.Reflection;
using System.Xml;
using System.Windows.Forms;

namespace SharpDevelop.Actions.Edit {
	
	public class EditActionLoader
	{
		static ArrayList editactions = null;
		
		public static ArrayList EditAction {
			get {
				Debug.Assert(editactions != null, "SharpDevelop.Action.EditAction.EditActionLoader : editactions == null");
				return editactions;
			}
		}
		
		public static ArrayList GenEditActions(Assembly asm, string nspace, XmlElement root)
		{
			XmlNodeList nodes = root.GetElementsByTagName("ACTION");

			ArrayList actions = new ArrayList();
			for (int i  = 0; i < nodes.Count; ++i) {
				XmlElement el = (XmlElement)nodes[i];
				string[] keydef = el.Attributes["KEYS"].InnerText.Split(new char[] { ',' });
				Keys[]   keys   = new Keys[keydef.Length];
				for (int j = 0; j < keydef.Length; ++j) {
					string[] keydescr = keydef[j].Split(new char[] { '|' });
					Keys key = (Keys)((Keys.Space.GetType()).InvokeMember(keydescr[0], BindingFlags.GetField, null, Keys.Space, new object[0]));
					for (int k = 1; k < keydescr.Length; ++k)
						key |= (Keys)((Keys.Space.GetType()).InvokeMember(keydescr[k], BindingFlags.GetField, null, Keys.Space, new object[0]));
					keys[j] = key;
				}
				
				string objname = nspace + el.Attributes["EVENT"].InnerText;
				ISdEditAction action = (ISdEditAction)asm.CreateInstance(objname);
				if (action == null) {
					MessageBox.Show("Can't create EditAction " + el.Attributes["EVENT"].InnerText, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
				}
				actions.Add(new EditAction(keys, action));
			}
			return actions;
		}
		
		
		/// <summary>
		/// This method loads the external tools from a XML based
		/// configuration file.
		/// </summary>
		public static void LoadEditActions()
		{
			XmlDocument editkeydefinition = new XmlDocument();
			editkeydefinition.Load(Application.StartupPath + "\\options\\EditActions.xml");
			
			editactions = GenEditActions(Assembly.GetCallingAssembly(), "SharpDevelop.Actions.Edit.", editkeydefinition.DocumentElement);
		}
	}
}