MVVM refactoring for web search plugin, part 2

1. #486
2. rename

Plugins/Wox.Plugin.WebSearch/SearchSource.cs

@@ -0,0 +1,43 @@
+using System.IO;
+using System.Windows.Media;
+using JetBrains.Annotations;
+using Newtonsoft.Json;
+using Wox.Infrastructure.Image;
+
+namespace Wox.Plugin.WebSearch
+{
+    public class SearchSource : BaseModel
+    {
+        public const string DefaultIcon = "web_search.png";
+        public string Title { get; set; }
+        public string ActionKeyword { get; set; }
+
+        [NotNull]
+        public string Icon { private get; set; } = DefaultIcon;
+
+        /// <summary>
+        /// All icon should be put under Images directory
+        /// </summary>
+        [NotNull]
+        [JsonIgnore]
+        internal string IconPath => Path.Combine(Main.ImagesDirectory, Icon);
+        [JsonIgnore]
+        public ImageSource Image => ImageLoader.Load(IconPath);
+
+        public string Url { get; set; }
+        public bool Enabled { get; set; }
+
+        public SearchSource DeepCopy()
+        {
+            var webSearch = new SearchSource
+            {
+                Title = string.Copy(Title),
+                ActionKeyword = string.Copy(ActionKeyword),
+                Url = string.Copy(Url),
+                Icon = string.Copy(Icon),
+                Enabled = Enabled
+            };
+            return webSearch;
+        }
+    }
+}