1 files changed, 153 insertions, 0 deletions
diff --git a/main/src/addins/MonoDevelop.Refactoring/MonoDevelop.CodeIssues/Pad/GroupingProviderChainControl.cs b/main/src/addins/MonoDevelop.Refactoring/MonoDevelop.CodeIssues/Pad/GroupingProviderChainControl.cs
new file mode 100644
index 0000000000..3449d7b24b
--- /dev/null
+++ b/main/src/addins/MonoDevelop.Refactoring/MonoDevelop.CodeIssues/Pad/GroupingProviderChainControl.cs
@@ -0,0 +1,153 @@
+//
+// GroupingProviderChainControl.cs
+//
+// Author:
+//       Simon Lindgren <simon.n.lindgren@gmail.com>
+//
+// Copyright (c) 2013 Simon Lindgren
+//
+// 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 System.Linq;
+using Xwt;
+using System.Collections.Generic;
+using MonoDevelop.Core;
+
+namespace MonoDevelop.CodeIssues
+{
+	public class GroupingProviderChainControl: HBox
+	{
+		readonly IList<Type> availableProviders;
+		
+		readonly IList<ComboBox> providerPickers = new List<ComboBox>();
+		readonly IList<Label> labels = new List<Label>();
+
+		public GroupingProviderChainControl(IssueGroup rootGroup, IEnumerable<Type> providers)
+		{
+			this.RootGroupingProvider = new GroupingProvider (rootGroup);
+			availableProviders = providers.ToList();
+			
+			BuildUi ();
+		}
+
+		public IGroupingProvider RootGroupingProvider {
+			get;
+			private set;
+		}
+
+		void BuildUi ()
+		{
+			Clear ();
+			var label = new Label ("Group by:");
+			labels.Add (label);
+			PackStart (label);
+			BuildProviderSelectors (RootGroupingProvider, RootGroupingProvider.Next);
+		}
+		
+		void BuildProviderSelectors (IGroupingProvider previousProvider, IGroupingProvider selectedProvider)
+		{
+			var combo = MakeSelector (selectedProvider);
+			combo.SelectionChanged += (sender, e) => {
+				var selectedType = combo.SelectedItem as Type;
+				if (selectedType == null)
+					return;
+				var newProvider = (IGroupingProvider)Activator.CreateInstance(selectedType);
+				
+				if (newProvider.SupportsNext && selectedProvider.SupportsNext) {
+					newProvider.Next = selectedProvider.Next;
+				}
+				previousProvider.Next = newProvider;
+				BuildUi ();
+			};
+			providerPickers.Add (combo);
+			PackStart (combo);
+			
+			if (selectedProvider.SupportsNext) {
+				PackStart (new Label ("then by"));
+				BuildProviderSelectors (selectedProvider, selectedProvider.Next);
+			}
+		}
+
+		ComboBox MakeSelector (IGroupingProvider selectedProvider)
+		{
+			var combo = new ComboBox ();
+			combo.Items.Add (typeof(NullGroupingProvider), "Nothing");
+			combo.Items.Add (ItemSeparator.Instance);
+			foreach (var providerType in availableProviders) {
+				var metadata = (GroupingDescriptionAttribute)providerType.GetCustomAttributes (false).FirstOrDefault (attr => attr is GroupingDescriptionAttribute);
+				if (metadata == null) {
+					LoggingService.LogWarning ("Grouping provider '{0}' does not have a metadata attribute, ignoring provider.", providerType.FullName);
+					continue;
+				}
+				combo.Items.Add (providerType, metadata.Title);
+			}
+			if (selectedProvider != null) {
+				combo.SelectedItem = selectedProvider.GetType ();
+			} else {
+				combo.SelectedItem = typeof(NullGroupingProvider);
+			}
+			return combo;
+		}
+		
+		class GroupingProvider: IGroupingProvider
+		{
+			readonly IssueGroup rootGroup;
+			
+			public GroupingProvider (IssueGroup rootGroup)
+			{
+				this.rootGroup = rootGroup;
+				next = rootGroup.GroupingProvider;
+			}
+		
+			#region IGroupingProvider implementation
+			
+			public event EventHandler<GroupingProviderEventArgs> NextChanged;
+			
+			public IssueGroup GetIssueGroup (IssueGroup parent, IssueSummary issue)
+			{
+				throw new NotImplementedException ();
+			}
+			
+			public void Reset ()
+			{
+				throw new NotImplementedException ();
+			}
+			
+			IGroupingProvider next;
+			public IGroupingProvider Next {
+				get {
+					return next;
+				}
+				set {
+					next = value;
+					rootGroup.GroupingProvider = value;
+				}
+			}
+			
+			public bool SupportsNext {
+				get {
+					return true;
+				}
+			}
+			#endregion
+			
+		}
+	}
+}
+