Changed the tool infrastructure to make the main menu supporting tree…

… nodes. (#104)

* Changed the tool infrastructure to make the main menu supporting tree nodes.

* fixed localized text

src/dev/impl/DevToys/Api/Tools/IToolProviderFactory.cs

@@ -18,21 +18,27 @@ public interface IToolProviderFactory
         IToolViewModel GetToolViewModel(IToolProvider provider);
 
         /// <summary>
-        /// Gets the list of tools available.
+        /// Gets a flat list of tools that match the given query.
         /// </summary>
-        /// <param name="searchQuery">If not null or empty, the method will return items that match the given search query and order them.</param>
-        /// <returns>
-        /// Returns a list of provider along with an array of parts that matched <paramref name="searchQuery"/>.
-        /// </returns>
-        IEnumerable<MatchedToolProvider> GetTools(string? searchQuery);
+        Task<IEnumerable<MatchedToolProvider>> SearchToolsAsync(string searchQuery);
+
+        /// <summary>
+        /// Gets a hierarchical list of available tools. This does not include footer tools.
+        /// </summary>
+        Task<IEnumerable<MatchedToolProvider>> GetToolsTreeAsync();
+
+        /// <summary>
+        /// Gets a flat list containing all the tools available.
+        /// </summary>
+        IEnumerable<MatchedToolProvider> GetAllTools();
 
         /// <summary>
         /// Gets the list of tools available that have the <see cref="IsFooterItemAttribute"/>.
         /// </summary>
-        IEnumerable<MatchedToolProvider> GetFooterTools();
+        Task<IEnumerable<MatchedToolProvider>> GetFooterToolsAsync();
 
         /// <summary>
-        /// Called when the app is shutting down. Asks ever tools to cleanup resources.
+        /// Called when the app is shutting down. Asks every tools to cleanup resources.
         /// </summary>
         Task CleanupAsync();
     }

src/dev/impl/DevToys/Api/Tools/MatchedToolProvider.cs

@@ -1,8 +1,14 @@
 #nullable enable
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Threading.Tasks;
+using DevToys.Shared.Core.Threading;
+using DevToys.Core.Threading;
 using DevToys.Shared.Core;
+using Windows.UI.Xaml.Controls;
+using System.Linq;
 
 namespace DevToys.Api.Tools
 {
@@ -11,6 +17,7 @@ namespace DevToys.Api.Tools
     /// </summary>
     public class MatchedToolProvider : INotifyPropertyChanged
     {
+        private readonly List<MatchedToolProvider> _childrenTools = new();
         private MatchSpan[] _matchedSpans = Array.Empty<MatchSpan>();
 
         /// <summary>
@@ -39,13 +46,73 @@ public MatchSpan[] MatchedSpans
         /// </summary>
         public ToolProviderMetadata Metadata { get; }
 
+        /// <summary>
+        /// Gets whether the tool should be highlighted in the UI following a smart detection that the tool could be useful for the user.
+        /// </summary>
+        public bool IsRecommended { get; private set; }
+
+        public IReadOnlyList<MatchedToolProvider> ChildrenTools
+        {
+            get => _childrenTools;
+            set
+            {
+                _childrenTools.Clear();
+                if (value is not null)
+                {
+                    foreach (MatchedToolProvider item in value)
+                    {
+                        AddChildTool(item);
+                    }
+                }
+            }
+        }
+
+        public bool HasRecommandedChildrenTool => ChildrenTools.Any(item => item.IsRecommended || item.HasRecommandedChildrenTool);
+
+        internal TaskCompletionNotifier<IconElement> Icon => (TaskCompletionNotifier<IconElement>)ToolProvider.IconSource;
+
         public event PropertyChangedEventHandler? PropertyChanged;
 
-        public MatchedToolProvider(ToolProviderMetadata metadata, IToolProvider toolProvider, MatchSpan[] matchedSpans)
+        public MatchedToolProvider(ToolProviderMetadata metadata, IToolProvider toolProvider, MatchSpan[]? matchedSpans = null)
         {
             Metadata = Arguments.NotNull(metadata, nameof(metadata));
             ToolProvider = Arguments.NotNull(toolProvider, nameof(toolProvider));
-            MatchedSpans = Arguments.NotNull(matchedSpans, nameof(matchedSpans));
+            MatchedSpans = matchedSpans ?? Array.Empty<MatchSpan>();
+        }
+
+        internal async Task UpdateIsRecommendedAsync(string clipboardContent)
+        {
+            await TaskScheduler.Default;
+
+            IsRecommended = ToolProvider.CanBeTreatedByTool(clipboardContent);
+
+            ThreadHelper.RunOnUIThreadAsync(() =>
+            {
+                RaisePropertyChanged(nameof(IsRecommended));
+            }).Forget();
+        }
+
+        internal void AddChildTool(MatchedToolProvider child)
+        {
+            Arguments.NotNull(child, nameof(child));
+
+            _childrenTools.Add(child);
+
+            if (child.IsRecommended)
+            {
+                RaisePropertyChanged(nameof(HasRecommandedChildrenTool));
+            }
+
+            child.PropertyChanged += Child_PropertyChanged;
+        }
+
+        private void Child_PropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            if ((e.PropertyName == nameof(IsRecommended) || e.PropertyName == nameof(HasRecommandedChildrenTool))
+                && HasRecommandedChildrenTool)
+            {
+                RaisePropertyChanged(nameof(HasRecommandedChildrenTool));
+            }
         }
 
         protected void RaisePropertyChanged(string propertyName)

src/dev/impl/DevToys/Api/Tools/ParentAttribute.cs

@@ -0,0 +1,23 @@
+#nullable enable
+
+using System;
+using System.Composition;
+
+namespace DevToys.Api.Tools
+{
+    /// <summary>
+    /// Indicates the parent tool of the current one.
+    /// The name should corresponds to an existing <see cref="NameAttribute.Name"/> value, or null if no parent.
+    /// </summary>
+    [MetadataAttribute]
+    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
+    public sealed class ParentAttribute : Attribute
+    {
+        public string Parent { get; set; }
+
+        public ParentAttribute(string? name)
+        {
+            Parent = name ?? string.Empty;
+        }
+    }
+}

src/dev/impl/DevToys/Api/Tools/ToolProviderMetadata.cs

@@ -12,6 +12,12 @@ public sealed class ToolProviderMetadata
         [DefaultValue("Unnamed")]
         public string Name { get; set; } = string.Empty;
 
+        /// <summary>
+        /// Gets or sets the internal non-localized name of the parent provider.
+        /// </summary>
+        [DefaultValue("")]
+        public string Parent { get; set; } = string.Empty;
+
         /// <summary>
         /// Gets or sets the order in which this tool should appear.
         /// </summary>

src/dev/impl/DevToys/Core/Collections/ExtendedObservableCollection.cs

@@ -0,0 +1,27 @@
+#nullable enable
+
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using DevToys.Shared.Core;
+
+namespace DevToys.Core.Collections
+{
+    public class ExtendedObservableCollection<T> : ObservableCollection<T>
+    {
+        /// <summary> 
+        /// Adds the elements of the specified collection to the end of the ObservableCollection(Of T).
+        /// </summary> 
+        internal void AddRange(IEnumerable<T> collection)
+        {
+            Arguments.NotNull(collection, nameof(collection));
+
+            foreach (T item in collection)
+            {
+                Items.Add(item);
+            }
+
+            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
+        }
+    }
+}