~do-win/do/test-paths

// InterfaceManager.cs

// 

// Copyright (C) 2008 GNOME Do

//

// 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 3 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, see <http://www.gnu.org/licenses/>.

//

 

using System;

using System.Linq;

using System.Collections.Generic;

 

using Mono.Addins;

 

using Do.Platform;

 

namespace Do.Interface

{

        

        public class InterfaceManager

        {

 

                public static void Initialize ()

                {

                        if (!AddinManager.IsInitialized)

                                throw new Exception ("Addin manager was not initialized before initializing user interfaces");

                        AddinManager.AddExtensionNodeHandler ("/Do/InterfaceWindow", OnInterfaceChanged);

                }

                

                static void OnInterfaceChanged (object sender, ExtensionNodeEventArgs e)

                {

                        TypeExtensionNode node = e.ExtensionNode as TypeExtensionNode;

                        InterfaceDescription desc = new InterfaceDescription (node);

                        switch (e.Change) {

                        case ExtensionChange.Add:

                                Log<InterfaceManager>.Debug ("\"{0}\" interface was loaded", desc.Name);

                                break;

                        case ExtensionChange.Remove:

                                Log<InterfaceManager>.Debug ("\"{0}\" interface was unloaded", desc.Name);

                                break;

                        }

                }

                

                public static IEnumerable<InterfaceDescription> GetInterfaceDescriptions ()

                {

                        return AddinManager.GetExtensionNodes ("/Do/InterfaceWindow")

                                .Cast<TypeExtensionNode> ()

                                .Select (node => new InterfaceDescription (node));

                }

 

                public static IDoWindow MaybeGetInterfaceNamed (string name)

                {

                        return GetInterfaceDescriptions ()

                                .Where (d => d.Name == name)

                                .Select (d => d.GetNewInstance ())

                                .FirstOrDefault ();

                }

        }

}