Add context menu and tooltip to asset items in Content Finder tool

Source/Editor/Content/Items/AssetItem.cs

@@ -39,7 +39,7 @@ namespace FlaxEditor.Content
         }
 
         /// <inheritdoc />
-        protected override void UpdateTooltipText()
+        public override void UpdateTooltipText()
         {
             var sb = new StringBuilder();
             OnBuildTooltipText(sb);

Source/Editor/Content/Items/ContentFolder.cs

@@ -135,7 +135,7 @@ namespace FlaxEditor.Content
         }
 
         /// <inheritdoc />
-        protected override void UpdateTooltipText()
+        public override void UpdateTooltipText()
         {
             TooltipText = Path;
         }

Source/Editor/Content/Items/ContentItem.cs

@@ -366,7 +366,7 @@ namespace FlaxEditor.Content
         /// <summary>
         /// Updates the tooltip text text.
         /// </summary>
-        protected virtual void UpdateTooltipText()
+        public virtual void UpdateTooltipText()
         {
             TooltipText = "Path: " + Path;
         }

Source/Editor/Surface/ContextMenu/SearchItem.cs

@@ -1,6 +1,8 @@
 // Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
 
 using FlaxEditor.Content;
+using FlaxEditor.GUI.ContextMenu;
+using FlaxEditor.Windows;
 using FlaxEngine;
 using FlaxEngine.GUI;
 
@@ -116,6 +118,7 @@ namespace FlaxEditor.Surface.ContextMenu
         /// <inheritdoc />
         public override void OnDestroy()
         {
+            Item = null;
             _finder = null;
             _icon = null;
 
@@ -131,6 +134,7 @@ namespace FlaxEditor.Surface.ContextMenu
     public class AssetSearchItem : SearchItem, IContentItemOwner
     {
         private AssetItem _asset;
+        private FlaxEditor.GUI.ContextMenu.ContextMenu _cm;
 
         /// <inheritdoc />
         public AssetSearchItem(string name, string type, AssetItem item, ContentFinder finder, float width, float height)
@@ -140,9 +144,70 @@ namespace FlaxEditor.Surface.ContextMenu
             _asset.AddReference(this);
         }
 
+        /// <inheritdoc />
+        protected override bool ShowTooltip => true;
+
+        /// <inheritdoc />
+        public override bool OnShowTooltip(out string text, out Vector2 location, out Rectangle area)
+        {
+            if (string.IsNullOrEmpty(TooltipText) && Item is AssetItem assetItem)
+            {
+                assetItem.UpdateTooltipText();
+                TooltipText = assetItem.TooltipText;
+            }
+            return base.OnShowTooltip(out text, out location, out area);
+        }
+
+        /// <inheritdoc />
+        public override bool OnMouseUp(Vector2 location, MouseButton button)
+        {
+            if (base.OnMouseUp(location, button))
+                return true;
+            if (button == MouseButton.Right && Item is AssetItem assetItem)
+            {
+                // Show context menu
+                var proxy = Editor.Instance.ContentDatabase.GetProxy(assetItem);
+                ContextMenuButton b;
+                var cm = new FlaxEditor.GUI.ContextMenu.ContextMenu { Tag = assetItem };
+                b = cm.AddButton("Open", () => Editor.Instance.ContentFinding.Open(Item));
+                cm.AddSeparator();
+                cm.AddButton("Show in explorer", () => FileSystem.ShowFileExplorer(System.IO.Path.GetDirectoryName(assetItem.Path)));
+                cm.AddButton("Show in Content window", () => Editor.Instance.Windows.ContentWin.Select(assetItem, true));
+                b.Enabled = proxy != null && proxy.CanReimport(assetItem);
+                if (assetItem is BinaryAssetItem binaryAsset)
+                {
+                    if (!binaryAsset.GetImportPath(out string importPath))
+                    {
+                        string importLocation = System.IO.Path.GetDirectoryName(importPath);
+                        if (!string.IsNullOrEmpty(importLocation) && System.IO.Directory.Exists(importLocation))
+                        {
+                            cm.AddButton("Show import location", () => FileSystem.ShowFileExplorer(importLocation));
+                        }
+                    }
+                }
+                cm.AddSeparator();
+                cm.AddButton("Copy asset ID", () => Clipboard.Text = FlaxEngine.Json.JsonSerializer.GetStringID(assetItem.ID));
+                cm.AddButton("Select actors using this asset", () => Editor.Instance.SceneEditing.SelectActorsUsingAsset(assetItem.ID));
+                cm.AddButton("Show asset references graph", () => Editor.Instance.Windows.Open(new AssetReferencesGraphWindow(Editor.Instance, assetItem)));
+                cm.AddSeparator();
+                proxy?.OnContentWindowContextMenu(cm, assetItem);
+                assetItem.OnContextMenu(cm);
+                cm.AddButton("Copy name to Clipboard", () => Clipboard.Text = assetItem.NamePath);
+                cm.AddButton("Copy path to Clipboard", () => Clipboard.Text = assetItem.Path);
+                cm.Show(this, location);
+                _cm = cm;
+                return true;
+            }
+            return false;
+        }
+
         /// <inheritdoc />
         public override void Draw()
         {
+            // Draw context menu hint
+            if (_cm != null && _cm.Visible)
+                Render2D.FillRectangle(new Rectangle(Vector2.Zero, Size), Color.Gray);
+
             base.Draw();
 
             // Draw icon
@@ -153,6 +218,7 @@ namespace FlaxEditor.Surface.ContextMenu
         /// <inheritdoc />
         public override void OnDestroy()
         {
+            _cm = null;
             if (_asset != null)
             {
                 _asset.RemoveReference(this);