--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Chronosv2/source/Presentation/ViewModel/NavigationViewModel.cs	Tue Feb 21 17:25:44 2012 +0700
@@ -0,0 +1,296 @@
+/*
+The MIT License
+
+Copyright (c) 2009-2010. Carlos Guzmán Álvarez. http://chronoswpf.codeplex.com/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+using System;
+using Chronos.Presentation.Core.Navigation;
+using Chronos.Presentation.Core.ViewModel;
+using Chronos.Presentation.Core.VirtualDesktops;
+using NLog;
+using nRoute.Components;
+using nRoute.Navigation;
+
+namespace Chronos.Presentation.ViewModel
+{
+    /// <summary>
+    /// base class for navigation based viewmodel iumplementations
+    /// </summary>
+    public abstract class NavigationViewModel 
+        : ClosableViewModel, INavigationViewModel
+    {
+        #region · Logger ·
+
+        private static Logger Logger = LogManager.GetCurrentClassLogger();
+
+        #endregion
+
+        #region · Fields ·
+
+        #region · Commands ·
+
+        private ActionCommand newWindowCommand;
+        private ActionCommand restoreCommand;
+
+        #endregion
+
+        #endregion
+
+        #region · INavigationViewModel Commands ·
+
+        /// <summary>
+        /// Gets the open new window command
+        /// </summary>
+        public ActionCommand NewWindowCommand
+        {
+            get
+            {
+                if (this.newWindowCommand == null)
+                {
+                    this.newWindowCommand = new ActionCommand
+                    (
+                        () => OnOpenNewWindow(),
+                        () => CanOpenNewWindow()
+                    );
+                }
+
+                return this.newWindowCommand;
+            }
+        }
+
+        /// <summary>
+        /// Gets the restore command
+        /// </summary>
+        public ActionCommand RestoreCommand
+        {
+            get
+            {
+                if (this.restoreCommand == null)
+                {
+                    this.restoreCommand = new ActionCommand
+                    (
+                        () => OnRestore(),
+                        () => CanRestore()
+                    );
+                }
+
+                return this.restoreCommand;
+            }
+        }
+
+        #endregion
+
+        #region · INavigationViewModel Properties ·
+
+        /// <summary>
+        /// Gets the navigation route
+        /// </summary>
+        public virtual string NavigationRoute
+        {
+            get { return String.Empty; }
+        }
+
+        /// <summary>
+        /// Gets a value indicating if the viewmodel has available relations
+        /// </summary>
+        public virtual bool HasRelations
+        {
+            get { return false; }
+        }
+
+        #endregion
+
+        #region · Constructors ·
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NavigationViewModel"/> class.
+        /// </summary>
+        protected NavigationViewModel()
+            : base()
+        {
+        }
+
+        #endregion
+
+        #region · Methods ·
+
+        public override void Close()
+        {
+            this.newWindowCommand   = null;
+            this.restoreCommand     = null;
+
+            base.Close();
+        }
+
+        #endregion
+
+        #region · Navigation Methods ·
+
+        /// <summary>
+        /// Performs the navigation to the given target
+        /// </summary>
+        /// <param name="target"></param>
+        protected void Navigate(string target)
+        {
+            this.Navigate(NavigateMode.New, target, null);
+        }
+
+        /// <summary>
+        /// Performs the navigation to the given target
+        /// </summary>
+        /// <param name="target"></param>
+        protected void Navigate(NavigateMode mode, string target)
+        {
+            this.Navigate(mode, target, null);
+        }
+
+        /// <summary>
+        /// Performs the navigation to the given target
+        /// </summary>
+        /// <param name="target"></param>
+        protected void Navigate(string target, params object[] args)
+        {
+            this.Navigate(NavigateMode.New, target, args);
+        }
+
+        /// <summary>
+        /// Performs the navigation to the given target
+        /// </summary>
+        /// <param name="target"></param>
+        protected void Navigate(NavigateMode mode, string target, params object[] args)
+        {
+            this.GetService<INavigationService>().Navigate(mode, target, args);
+        }
+
+        #endregion
+
+        #region · ISupportNavigationLifecycle Members ·
+
+        /// <summary>
+        /// Closings the specified confirm callback.
+        /// </summary>
+        /// <param name="confirmCallback">The confirm callback.</param>
+        void ISupportNavigationLifecycle.Closing(System.Action<bool> confirmCallback)
+        {
+            this.OnClosing(confirmCallback);
+        }
+
+        /// <summary>
+        /// Initializes the specified request parameters.
+        /// </summary>
+        /// <param name="requestParameters">The request parameters.</param>
+        void ISupportNavigationLifecycle.Initialize(ParametersCollection requestParameters)
+        {
+            this.OnInitialize(requestParameters);
+        }
+
+        #endregion
+
+        #region · ISupportNavigationState Members ·
+
+        /// <summary>
+        /// Restores the state.
+        /// </summary>
+        /// <param name="state">The state.</param>
+        void ISupportNavigationState.RestoreState(ParametersCollection state)
+        {
+            this.OnRestoreState(state);
+        }
+
+        /// <summary>
+        /// Saves the state.
+        /// </summary>
+        /// <returns></returns>
+        ParametersCollection ISupportNavigationState.SaveState()
+        {
+            return this.OnSaveState();
+        }
+
+        #endregion
+
+        #region · Command Actions ·
+
+        protected virtual bool CanOpenNewWindow()
+        {
+            return !String.IsNullOrEmpty(this.NavigationRoute);
+        }
+
+        protected virtual void OnOpenNewWindow()
+        {
+            Logger.Debug("Abrir una nueva ventana '{0}'", this.GetType());
+
+            this.GetService<INavigationService>().Navigate(this.NavigationRoute);
+        }
+
+        protected virtual bool CanRestore()
+        {
+            return true;
+        }
+
+        protected virtual void OnRestore()
+        {
+            Logger.Debug("Restaurar ventana '{0}'", this.GetType());
+
+            this.GetService<IVirtualDesktopManager>().Restore(this.Id);
+        }
+
+        #endregion
+
+        #region · Protected Methods ·
+        
+        /// <summary>
+        /// Called when closing.
+        /// </summary>
+        /// <param name="confirmCallback">The confirm callback.</param>
+        protected virtual void OnClosing(Action<bool> confirmCallback)
+        {
+            confirmCallback(false);
+        }
+
+        /// <summary>
+        /// Called when the window is going to be initialized after navigation.
+        /// </summary>
+        /// <param name="requestParameters">The request parameters.</param>
+        protected virtual void OnInitialize(ParametersCollection requestParameters)
+        {
+        }
+
+        /// <summary>
+        /// Called when restore state.
+        /// </summary>
+        /// <param name="state">The state.</param>
+        protected virtual void OnRestoreState(ParametersCollection state)
+        {
+        }
+
+        /// <summary>
+        /// Called when save state.
+        /// </summary>
+        /// <returns></returns>
+        protected virtual ParametersCollection OnSaveState()
+        {
+            return null;
+        }
+
+        #endregion
+    }
+}