port from perforce

aiwaz/Aiwaz.Editor/ViewModels/ResourceViewModel.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Collections.ObjectModel;
+using Aiwaz.Contracts;
+using System.Collections.Specialized;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Reflection;
+using System.IO;
+using System.Windows.Media.Imaging;
+
+namespace Aiwaz.Editor.ViewModels
+{
+    public class ResourceViewModel : ViewModelBase
+    {
+        private bool creating;
+
+        public IResource Resource;
+
+        public string DisplayName
+        {
+            get
+            {
+                return Resource.WellKnownName;
+            }
+            set
+            {
+                Resource.WellKnownName = value;
+            }
+        }
+
+        public ImageSource DisplayIcon
+        {
+            get
+            {
+                var stream = File.OpenRead("Resources/icon.png");
+                BitmapImage bitmap = new BitmapImage();
+                bitmap.BeginInit();
+                bitmap.StreamSource = stream;
+                bitmap.EndInit();
+                return bitmap;
+            }
+        }
+
+        private ObservableCollection<ResourceViewModel> nodes;
+        public ObservableCollection<ResourceViewModel> Nodes
+        {
+            get
+            {
+                if (nodes == null)
+                {
+                    nodes = new ObservableCollection<ResourceViewModel>();
+                    nodes.CollectionChanged += new NotifyCollectionChangedEventHandler(nodes_CollectionChanged);
+                }
+                return nodes;
+            }
+            set
+            {
+                if (nodes != value)
+                {
+                    nodes = value;
+                    OnPropertyChanged("Nodes");
+                }
+            }
+        }
+
+        void nodes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+        {
+            if (creating)
+                return;
+
+            if (e.Action == NotifyCollectionChangedAction.Add)
+            {
+                foreach (ResourceViewModel newItem in e.NewItems)
+                {
+                    Resource.Children.Insert(e.NewStartingIndex, newItem.Resource);
+                }
+            }
+            else if (e.Action == NotifyCollectionChangedAction.Remove)
+            {
+                foreach (ResourceViewModel oldItem in e.OldItems)
+                {
+                    Resource.Children.Remove(oldItem.Resource);
+                }
+            }
+            OnPropertyChanged("Nodes");
+        }
+
+        public ResourceViewModel(IResource resource)
+        {
+            this.Resource = resource;
+
+            creating = true;
+            if (resource.Children != null)
+                foreach (var child in resource.Children)
+                {
+                    Nodes.Add(new ResourceViewModel(child));
+                }
+            creating = false;
+            OnPropertyChanged("Nodes");
+        }
+    }
+}