Index: Core/Plugins/src/Core.Plugins.DotSpatial/DotSpatialGuiPlugin.cs
===================================================================
diff -u -rf665ce5f69f43f2ee4a96a05e44b849d019bb53a -rf2859c13f845d1cb1f654022aad4f48cdb5d908b
--- Core/Plugins/src/Core.Plugins.DotSpatial/DotSpatialGuiPlugin.cs	(.../DotSpatialGuiPlugin.cs)	(revision f665ce5f69f43f2ee4a96a05e44b849d019bb53a)
+++ Core/Plugins/src/Core.Plugins.DotSpatial/DotSpatialGuiPlugin.cs	(.../DotSpatialGuiPlugin.cs)	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -54,6 +54,7 @@
             mapLegendController = CreateLegendController(Gui);
             mapRibbon = CreateMapRibbon();
 
+            mapLegendController.ToggleLegend();
             Gui.ActiveViewChanged += GuiOnActiveViewChanged;
             activated = true;
         }
Index: Core/Plugins/test/Core.Plugins.DotSpatial.Test/Core.Plugins.DotSpatial.Test.csproj
===================================================================
diff -u -r3167b898b071fea4cf86c775bca5467fab086038 -rf2859c13f845d1cb1f654022aad4f48cdb5d908b
--- Core/Plugins/test/Core.Plugins.DotSpatial.Test/Core.Plugins.DotSpatial.Test.csproj	(.../Core.Plugins.DotSpatial.Test.csproj)	(revision 3167b898b071fea4cf86c775bca5467fab086038)
+++ Core/Plugins/test/Core.Plugins.DotSpatial.Test/Core.Plugins.DotSpatial.Test.csproj	(.../Core.Plugins.DotSpatial.Test.csproj)	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -70,6 +70,8 @@
     <Compile Include="Commands\ToggleMapLegendViewCommandTest.cs" />
     <Compile Include="DotSpatialGuiPluginTest.cs" />
     <Compile Include="Forms\MapDataViewTest.cs" />
+    <Compile Include="Legend\MapLegendControllerTest.cs" />
+    <Compile Include="Legend\MapLegendViewTest.cs" />
     <Compile Include="MapRibbonTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="TestMapView.cs">
@@ -81,6 +83,10 @@
       <Project>{3BBFD65B-B277-4E50-AE6D-BD24C3434609}</Project>
       <Name>Core.Common.Base</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\Common\src\Core.Common.Controls.TreeView\Core.Common.Controls.TreeView.csproj">
+      <Project>{1D27F91F-4E62-4EAF-A0A8-A32708B9A9B1}</Project>
+      <Name>Core.Common.Controls.TreeView</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Common\src\Core.Common.Controls\Core.Common.Controls.csproj">
       <Project>{9a2d67e6-26ac-4d17-b11a-2b4372f2f572}</Project>
       <Name>Core.Common.Controls</Name>
@@ -91,6 +97,10 @@
       <Name>Core.Common.Gui</Name>
       <Private>True</Private>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\Common\src\Core.Common.Utils\Core.Common.Utils.csproj">
+      <Project>{F49BD8B2-332A-4C91-A196-8CCE0A2C7D98}</Project>
+      <Name>Core.Common.Utils</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Common\test\Core.Common.TestUtil\Core.Common.TestUtil.csproj">
       <Project>{D749EE4C-CE50-4C17-BF01-9A953028C126}</Project>
       <Name>Core.Common.TestUtil</Name>
Index: Core/Plugins/test/Core.Plugins.DotSpatial.Test/DotSpatialGuiPluginTest.cs
===================================================================
diff -u -r3386076de3df80a7f7a5fd59e82eb8bdb1a7ebcd -rf2859c13f845d1cb1f654022aad4f48cdb5d908b
--- Core/Plugins/test/Core.Plugins.DotSpatial.Test/DotSpatialGuiPluginTest.cs	(.../DotSpatialGuiPluginTest.cs)	(revision 3386076de3df80a7f7a5fd59e82eb8bdb1a7ebcd)
+++ Core/Plugins/test/Core.Plugins.DotSpatial.Test/DotSpatialGuiPluginTest.cs	(.../DotSpatialGuiPluginTest.cs)	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using System.Windows;
+using System.Windows.Forms;
 using Core.Common.Base.Storage;
 using Core.Common.Controls.Views;
 using Core.Common.Gui;
@@ -9,7 +10,9 @@
 using Core.Common.Test.TestObjects;
 using Core.Components.DotSpatial;
 using Core.Components.DotSpatial.Data;
+using Core.Components.DotSpatial.TestUtil;
 using Core.Plugins.DotSpatial.Forms;
+using Core.Plugins.DotSpatial.Legend;
 using NUnit.Framework;
 using Rhino.Mocks;
 
@@ -48,17 +51,38 @@
 
         [Test]
         [RequiresSTA]
-        public void Activate_WithGui_BindsActiveViewChanged()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void Activate_WithGui_InitializeComponentsWithIMapViewAndBindsActiveViewChanged(bool useMapView)
         {
             // Setup
             var mocks = new MockRepository();
 
+            IView view;
+
+            if (useMapView)
+            {
+                var chartView = mocks.Stub<IMapView>();
+                var chart = mocks.Stub<IMap>();
+                chart.Data = new TestMapData();
+                chartView.Stub(v => v.Map).Return(chart);
+                view = chartView;
+            }
+            else
+            {
+                view = mocks.StrictMock<IView>();
+            }
+
             using (var plugin = new DotSpatialGuiPlugin())
             {
                 var gui = mocks.StrictMock<IGui>();
 
+                gui.Stub(g => g.IsToolWindowOpen<MapLegendView>()).Return(false);
+
+                gui.Expect(g => g.OpenToolView(Arg<MapLegendView>.Matches(c => true)));
                 gui.Expect(g => g.ActiveViewChanged += null).IgnoreArguments();
                 gui.Expect(g => g.ActiveViewChanged -= null).IgnoreArguments();
+                gui.Expect(g => g.ActiveView).Return(view);
 
                 mocks.ReplayAll();
 
Index: Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendControllerTest.cs
===================================================================
diff -u
--- Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendControllerTest.cs	(revision 0)
+++ Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendControllerTest.cs	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -0,0 +1,98 @@
+using System;
+using Core.Common.Gui;
+using Core.Plugins.DotSpatial.Legend;
+using NUnit.Framework;
+using Rhino.Mocks;
+
+namespace Core.Plugins.DotSpatial.Test.Legend
+{
+    [TestFixture]
+    public class MapLegendControllerTest
+    {
+        [Test]
+        public void Constructor_WithoutToolViewController_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => new MapLegendController(null);
+
+            // Assert
+            ArgumentNullException exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("toolViewController", exception.ParamName);
+        }
+
+        [Test]
+        public void Constructor_WithToolViewController_DoesNotThrow()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var toolViewController = mocks.StrictMock<IToolViewController>();
+
+            mocks.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new MapLegendController(toolViewController);
+
+            // Assert
+            Assert.DoesNotThrow(test);
+            mocks.VerifyAll();
+        }
+
+        [Test]
+        [TestCase(true)]
+        [TestCase(false)]
+        public void IsLegendViewOpen_LegendViewOpenAndClosedState_ReturnsExpectedState(bool open)
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var plugin = mocks.StrictMock<IToolViewController>();
+            plugin.Expect(p => p.IsToolWindowOpen<MapLegendView>()).Return(open);
+
+            mocks.ReplayAll();
+
+            var controller = new MapLegendController(plugin);
+
+            // Call
+            var result = controller.IsLegendViewOpen();
+
+            // Assert
+            Assert.AreEqual(open, result);
+            mocks.VerifyAll();
+        }
+
+        [Test]
+        [TestCase(true)]
+        [TestCase(false)]
+        public void ToggleLegendView_LegendViewOpenAndClosedState_TogglesStateOfLegendView(bool open)
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var plugin = mocks.StrictMock<IToolViewController>();
+            if (open)
+            {
+                plugin.Expect(p => p.IsToolWindowOpen<MapLegendView>()).Return(false);
+                plugin.Expect(p => p.OpenToolView(Arg<MapLegendView>.Matches(c => true)));
+                plugin.Expect(p => p.CloseToolView(Arg<MapLegendView>.Matches(c => true)));
+            }
+            else
+            {
+                plugin.Expect(p => p.OpenToolView(Arg<MapLegendView>.Matches(c => true)));
+            }
+            plugin.Expect(p => p.IsToolWindowOpen<MapLegendView>()).Return(open);
+
+            mocks.ReplayAll();
+
+            var controller = new MapLegendController(plugin);
+
+            if (open)
+            {
+                controller.ToggleLegend();
+            }
+
+            // Call
+            controller.ToggleLegend();
+
+            // Assert
+            mocks.VerifyAll();
+        }
+    }
+}
\ No newline at end of file
Index: Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendViewTest.cs
===================================================================
diff -u
--- Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendViewTest.cs	(revision 0)
+++ Core/Plugins/test/Core.Plugins.DotSpatial.Test/Legend/MapLegendViewTest.cs	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
+using Core.Common.Controls.TreeView;
+using Core.Common.Controls.Views;
+using Core.Common.Utils.Reflection;
+using Core.Components.DotSpatial.Data;
+using Core.Plugins.DotSpatial.Legend;
+using Core.Plugins.DotSpatial.Properties;
+using NUnit.Framework;
+
+namespace Core.Plugins.DotSpatial.Test.Legend
+{
+    [TestFixture]
+    public class MapLegendViewTest
+    {
+        [Test]
+        public void DefaultConstructor_CreatesUserControl()
+        {
+            // Call
+            var view = new MapLegendView();
+
+            // Assert
+            Assert.IsInstanceOf<UserControl>(view);
+            Assert.IsInstanceOf<IView>(view);
+            Assert.IsNull(view.Data);
+            Assert.AreEqual(Resources.General_Map, view.Text);
+        }
+
+        [Test]
+        public void DefaultConstructor_CreatesTreeViewControl()
+        {
+            // Call
+            var view = new MapLegendView();
+
+            var treeView = TypeUtils.GetField<TreeViewControl>(view, "treeViewControl");
+
+            // Assert
+            Assert.IsNotNull(treeView);
+            Assert.IsInstanceOf<TreeViewControl>(treeView);
+        }
+
+        [Test]
+        public void Data_MapData_DataSet()
+        {
+            // Setup
+            var view = new MapLegendView();
+            var mapData = new MapDataCollection(new List<MapData>());
+
+            // Call
+            view.Data = mapData;
+
+            // Assert
+            Assert.AreSame(mapData, view.Data);
+            Assert.IsInstanceOf<MapData>(view.Data);
+        }
+
+        [Test]
+        public void Data_ForNull_NullSet()
+        {
+            // Setup
+            var view = new MapLegendView();
+
+            // Call
+            view.Data = null;
+
+            // Assert
+            Assert.IsNull(view.Data);
+        }
+
+        [Test]
+        public void Data_OtherObject_ThrowsInvalidCastException()
+        {
+            // Setup 
+            var view = new MapLegendView();
+
+            // Call
+            TestDelegate test = () => view.Data = new object();
+
+            // Assert
+            Assert.Throws<InvalidCastException>(test);
+        }
+
+        [Test]
+        public void RegisterTreeNodes_Always_RegisterMapDataObjects()
+        {
+            // Call
+            var view = new MapLegendView();
+            var treeView = TypeUtils.GetField<TreeViewControl>(view, "treeViewControl");
+
+            // Assert
+            Assert.AreEqual(4, treeView.TreeNodeInfos.Count());
+
+            foreach (var treeNodeInfo in treeView.TreeNodeInfos)
+            {
+                Assert.IsInstanceOf<TreeNodeInfo>(treeNodeInfo);
+            }
+        }
+    }
+}
\ No newline at end of file
Index: Core/Plugins/test/Core.Plugins.DotSpatial.Test/MapRibbonTest.cs
===================================================================
diff -u -r3167b898b071fea4cf86c775bca5467fab086038 -rf2859c13f845d1cb1f654022aad4f48cdb5d908b
--- Core/Plugins/test/Core.Plugins.DotSpatial.Test/MapRibbonTest.cs	(.../MapRibbonTest.cs)	(revision 3167b898b071fea4cf86c775bca5467fab086038)
+++ Core/Plugins/test/Core.Plugins.DotSpatial.Test/MapRibbonTest.cs	(.../MapRibbonTest.cs)	(revision f2859c13f845d1cb1f654022aad4f48cdb5d908b)
@@ -102,6 +102,37 @@
 
         [Test]
         [RequiresSTA]
+        [TestCase(true)]
+        [TestCase(false)]
+        public void ValidateItems_Always_ToggleLegendViewIsCheckedEqualToCommandChecked(bool commandChecked)
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var command = mocks.StrictMock<ICommand>();
+            command.Expect(c => c.Checked).Return(commandChecked);
+
+            mocks.ReplayAll();
+
+            var ribbon = new MapRibbon
+            {
+                ToggleLegendViewCommand = command,
+            };
+
+            var toggleLegendViewButton = ribbon.GetRibbonControl().FindName("ToggleLegendViewButton") as ToggleButton;
+
+            // Precondition
+            Assert.IsNotNull(toggleLegendViewButton, "Ribbon should have a toggle legend view button.");
+
+            // Call
+            ribbon.ValidateItems();
+
+            // Assert
+            Assert.AreEqual(commandChecked, toggleLegendViewButton.IsChecked);
+            mocks.VerifyAll();
+        }
+
+        [Test]
+        [RequiresSTA]
         public void ToggleLegendViewButton_OnClick_ExecutesToggleLegendViewCommand()
         {
             // Setup