Pushing missing changes

MediaBrowser.UI.Controls/BaseModalWindow.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Windows;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Class BaseModalWindow
+    /// </summary>
+    public class BaseModalWindow : BaseWindow
+    {
+        /// <summary>
+        /// Shows the modal.
+        /// </summary>
+        /// <param name="owner">The owner.</param>
+        public void ShowModal(Window owner)
+        {
+            WindowStyle = WindowStyle.None;
+            ResizeMode = ResizeMode.NoResize;
+            ShowInTaskbar = false;
+            WindowStartupLocation = WindowStartupLocation.Manual;
+            AllowsTransparency = true;
+
+            Width = owner.Width;
+            Height = owner.Height;
+            Top = owner.Top;
+            Left = owner.Left;
+            WindowState = owner.WindowState;
+            Owner = owner;
+
+            ShowDialog();
+        }
+
+        /// <summary>
+        /// Called when [browser back].
+        /// </summary>
+        protected override void OnBrowserBack()
+        {
+            base.OnBrowserBack();
+
+            CloseModal();
+        }
+
+        /// <summary>
+        /// Raises the <see cref="E:System.Windows.FrameworkElement.Initialized" /> event. This method is invoked whenever <see cref="P:System.Windows.FrameworkElement.IsInitialized" /> is set to true internally.
+        /// </summary>
+        /// <param name="e">The <see cref="T:System.Windows.RoutedEventArgs" /> that contains the event data.</param>
+        protected override void OnInitialized(EventArgs e)
+        {
+            base.OnInitialized(e);
+
+            DataContext = this;
+        }
+
+        /// <summary>
+        /// Closes the modal.
+        /// </summary>
+        protected virtual void CloseModal()
+        {
+            Close();
+        }
+    }
+}

MediaBrowser.UI.Controls/BaseUserControl.cs

@@ -0,0 +1,21 @@
+using System.ComponentModel;
+using System.Windows.Controls;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Provides a base class for all user controls
+    /// </summary>
+    public abstract class BaseUserControl : UserControl
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public virtual void OnPropertyChanged(string name)
+        {
+            if (PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(name));
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/BaseWindow.cs

@@ -0,0 +1,175 @@
+using System;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Input;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Provides a base class for all Windows
+    /// </summary>
+    public abstract class BaseWindow : Window, INotifyPropertyChanged
+    {
+        /// <summary>
+        /// Occurs when [property changed].
+        /// </summary>
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        /// <summary>
+        /// Called when [property changed].
+        /// </summary>
+        /// <param name="info">The info.</param>
+        public void OnPropertyChanged(String info)
+        {
+            if (PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(info));
+            }
+        }
+
+        /// <summary>
+        /// The _content scale
+        /// </summary>
+        private double _contentScale = 1;
+        /// <summary>
+        /// Gets the content scale.
+        /// </summary>
+        /// <value>The content scale.</value>
+        public double ContentScale
+        {
+            get { return _contentScale; }
+            private set
+            {
+                _contentScale = value;
+                OnPropertyChanged("ContentScale");
+            }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BaseWindow" /> class.
+        /// </summary>
+        protected BaseWindow()
+            : base()
+        {
+            SizeChanged += MainWindow_SizeChanged;
+            Loaded += BaseWindowLoaded;
+        }
+
+        /// <summary>
+        /// Bases the window loaded.
+        /// </summary>
+        /// <param name="sender">The sender.</param>
+        /// <param name="e">The <see cref="RoutedEventArgs" /> instance containing the event data.</param>
+        void BaseWindowLoaded(object sender, RoutedEventArgs e)
+        {
+            OnLoaded();
+        }
+
+        /// <summary>
+        /// Called when [loaded].
+        /// </summary>
+        protected virtual void OnLoaded()
+        {
+            MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
+        }
+
+        /// <summary>
+        /// Handles the SizeChanged event of the MainWindow control.
+        /// </summary>
+        /// <param name="sender">The source of the event.</param>
+        /// <param name="e">The <see cref="SizeChangedEventArgs" /> instance containing the event data.</param>
+        void MainWindow_SizeChanged(object sender, SizeChangedEventArgs e)
+        {
+            ContentScale = e.NewSize.Height / 1080;
+        }
+
+        /// <summary>
+        /// Called when [browser back].
+        /// </summary>
+        protected virtual void OnBrowserBack()
+        {
+            
+        }
+
+        /// <summary>
+        /// Called when [browser forward].
+        /// </summary>
+        protected virtual void OnBrowserForward()
+        {
+
+        }
+
+        /// <summary>
+        /// Invoked when an unhandled <see cref="E:System.Windows.Input.Keyboard.PreviewKeyDown" /> attached event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
+        /// </summary>
+        /// <param name="e">The <see cref="T:System.Windows.Input.KeyEventArgs" /> that contains the event data.</param>
+        protected override void OnPreviewKeyDown(KeyEventArgs e)
+        {
+            if (IsBackPress(e))
+            {
+                e.Handled = true;
+
+                if (!e.IsRepeat)
+                {
+                    OnBrowserBack();
+                }
+            }
+
+            else if (IsForwardPress(e))
+            {
+                e.Handled = true;
+
+                if (!e.IsRepeat)
+                {
+                    OnBrowserForward();
+                }
+            }
+            base.OnPreviewKeyDown(e);
+        }
+
+        /// <summary>
+        /// Determines if a keypress should be treated as a backward press
+        /// </summary>
+        /// <param name="e">The <see cref="KeyEventArgs" /> instance containing the event data.</param>
+        /// <returns><c>true</c> if [is back press] [the specified e]; otherwise, <c>false</c>.</returns>
+        private bool IsBackPress(KeyEventArgs e)
+        {
+            if (e.Key == Key.Escape)
+            {
+                return true;
+            }
+
+            if (e.Key == Key.BrowserBack || e.Key == Key.Back)
+            {
+                return true;
+            }
+
+            if (e.SystemKey == Key.Left && e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Alt))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Determines if a keypress should be treated as a forward press
+        /// </summary>
+        /// <param name="e">The <see cref="KeyEventArgs" /> instance containing the event data.</param>
+        /// <returns><c>true</c> if [is forward press] [the specified e]; otherwise, <c>false</c>.</returns>
+        private bool IsForwardPress(KeyEventArgs e)
+        {
+            if (e.Key == Key.BrowserForward)
+            {
+                return true;
+            }
+
+            if (e.SystemKey == Key.RightAlt && e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Alt))
+            {
+                return true;
+            }
+
+            return false;
+        }
+    }
+}

MediaBrowser.UI.Controls/ExtendedButton.cs

@@ -0,0 +1,49 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// This subclass simply autofocuses itself when the mouse moves over it
+    /// </summary>
+    public class ExtendedButton : Button
+    {
+        private Point? _lastMouseMovePoint;
+
+        /// <summary>
+        /// Handles OnMouseMove to auto-select the item that's being moused over
+        /// </summary>
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+
+            var window = this.GetWindow();
+
+            // If the cursor is currently hidden, don't bother reacting to it
+            if (Cursor == Cursors.None || window.Cursor == Cursors.None)
+            {
+                return;
+            }
+
+            // Store the last position for comparison purposes
+            // Even if the mouse is not moving this event will fire as elements are showing and hiding
+            var pos = e.GetPosition(window);
+
+            if (!_lastMouseMovePoint.HasValue)
+            {
+                _lastMouseMovePoint = pos;
+                return;
+            }
+
+            if (pos == _lastMouseMovePoint)
+            {
+                return;
+            }
+
+            _lastMouseMovePoint = pos;
+
+            Focus();
+        }
+    }
+}

MediaBrowser.UI.Controls/ExtendedCheckbox.cs

@@ -0,0 +1,49 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Extends Checkbox to provide focus on mouse over
+    /// </summary>
+    public class ExtendedCheckbox : CheckBox
+    {
+        private Point? _lastMouseMovePoint;
+
+        /// <summary>
+        /// Handles OnMouseMove to auto-select the item that's being moused over
+        /// </summary>
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+
+            var window = this.GetWindow();
+
+            // If the cursor is currently hidden, don't bother reacting to it
+            if (Cursor == Cursors.None || window.Cursor == Cursors.None)
+            {
+                return;
+            }
+
+            // Store the last position for comparison purposes
+            // Even if the mouse is not moving this event will fire as elements are showing and hiding
+            var pos = e.GetPosition(window);
+
+            if (!_lastMouseMovePoint.HasValue)
+            {
+                _lastMouseMovePoint = pos;
+                return;
+            }
+
+            if (pos == _lastMouseMovePoint)
+            {
+                return;
+            }
+
+            _lastMouseMovePoint = pos;
+
+            Focus();
+        }
+    }
+}

MediaBrowser.UI.Controls/ExtendedListBox.cs

@@ -0,0 +1,260 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Extends the ListBox to provide auto-focus behavior when items are moused over
+    /// This also adds an ItemInvoked event that is fired when an item is clicked or invoked using the enter key
+    /// </summary>
+    public class ExtendedListBox : ListBox
+    {
+        /// <summary>
+        /// Fired when an item is clicked or invoked using the enter key
+        /// </summary>
+        public event EventHandler<ItemEventArgs<object>> ItemInvoked;
+
+        /// <summary>
+        /// Called when [item invoked].
+        /// </summary>
+        /// <param name="boundObject">The bound object.</param>
+        protected virtual void OnItemInvoked(object boundObject)
+        {
+            if (ItemInvoked != null)
+            {
+                ItemInvoked(this, new ItemEventArgs<object> { Argument = boundObject });
+            }
+        }
+
+        /// <summary>
+        /// The _auto focus
+        /// </summary>
+        private bool _autoFocus = true;
+        /// <summary>
+        /// Gets or sets a value indicating if the first list item should be auto-focused on load
+        /// </summary>
+        /// <value><c>true</c> if [auto focus]; otherwise, <c>false</c>.</value>
+        public bool AutoFocus
+        {
+            get { return _autoFocus; }
+            set
+            {
+                _autoFocus = value;
+            }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ExtendedListBox" /> class.
+        /// </summary>
+        public ExtendedListBox()
+            : base()
+        {
+            ItemContainerGenerator.StatusChanged += ItemContainerGeneratorStatusChanged;
+        }
+
+        /// <summary>
+        /// The mouse down object
+        /// </summary>
+        private object mouseDownObject;
+
+        /// <summary>
+        /// Invoked when an unhandled <see cref="E:System.Windows.Input.Mouse.PreviewMouseDown" /> attached routed event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
+        /// </summary>
+        /// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs" /> that contains the event data. The event data reports that one or more mouse buttons were pressed.</param>
+        protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
+        {
+            base.OnPreviewMouseDown(e);
+
+            // Get the item that the mouse down event occurred on
+            mouseDownObject = GetBoundListItemObject((DependencyObject)e.OriginalSource);
+        }
+
+        /// <summary>
+        /// Invoked when an unhandled <see cref="E:System.Windows.UIElement.MouseLeftButtonUp" /> routed event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
+        /// </summary>
+        /// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs" /> that contains the event data. The event data reports that the left mouse button was released.</param>
+        protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
+        {
+            base.OnMouseLeftButtonUp(e);
+
+            // If the mouse up event occurred on the same item as the mousedown event, then fire ItemInvoked
+            if (mouseDownObject != null)
+            {
+                var boundObject = GetBoundListItemObject((DependencyObject)e.OriginalSource);
+
+                if (mouseDownObject == boundObject)
+                {
+                    mouseDownObject = null;
+                    OnItemInvoked(boundObject);
+                }
+            }
+        }
+
+        /// <summary>
+        /// The key down object
+        /// </summary>
+        private object keyDownObject;
+
+        /// <summary>
+        /// Responds to the <see cref="E:System.Windows.UIElement.KeyDown" /> event.
+        /// </summary>
+        /// <param name="e">Provides data for <see cref="T:System.Windows.Input.KeyEventArgs" />.</param>
+        protected override void OnKeyDown(KeyEventArgs e)
+        {
+            if (e.Key == Key.Enter)
+            {
+                if (!e.IsRepeat)
+                {
+                    // Get the item that the keydown event occurred on
+                    keyDownObject = GetBoundListItemObject((DependencyObject)e.OriginalSource);
+                }
+
+                e.Handled = true;
+            }
+
+            base.OnKeyDown(e);
+        }
+
+        /// <summary>
+        /// Invoked when an unhandled <see cref="E:System.Windows.Input.Keyboard.KeyUp" /> attached event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
+        /// </summary>
+        /// <param name="e">The <see cref="T:System.Windows.Input.KeyEventArgs" /> that contains the event data.</param>
+        protected override void OnKeyUp(KeyEventArgs e)
+        {
+            base.OnKeyUp(e);
+
+            // Fire ItemInvoked when enter is pressed on an item
+            if (e.Key == Key.Enter)
+            {
+                if (!e.IsRepeat)
+                {
+                    // If the keyup event occurred on the same item as the keydown event, then fire ItemInvoked
+                    if (keyDownObject != null)
+                    {
+                        var boundObject = GetBoundListItemObject((DependencyObject)e.OriginalSource);
+
+                        if (keyDownObject == boundObject)
+                        {
+                            keyDownObject = null;
+                            OnItemInvoked(boundObject);
+                        }
+                    }
+                }
+
+                e.Handled = true;
+            }
+        }
+
+        /// <summary>
+        /// The _last mouse move point
+        /// </summary>
+        private Point? _lastMouseMovePoint;
+
+        /// <summary>
+        /// Handles OnMouseMove to auto-select the item that's being moused over
+        /// </summary>
+        /// <param name="e">Provides data for <see cref="T:System.Windows.Input.MouseEventArgs" />.</param>
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+
+            var window = this.GetWindow();
+
+            // If the cursor is currently hidden, don't bother reacting to it
+            if (Cursor == Cursors.None || window.Cursor == Cursors.None)
+            {
+                return;
+            }
+
+            // Store the last position for comparison purposes
+            // Even if the mouse is not moving this event will fire as elements are showing and hiding
+            var pos = e.GetPosition(window);
+
+            if (!_lastMouseMovePoint.HasValue)
+            {
+                _lastMouseMovePoint = pos;
+                return;
+            }
+
+            if (pos == _lastMouseMovePoint)
+            {
+                return;
+            }
+
+            _lastMouseMovePoint = pos;
+
+            var dep = (DependencyObject)e.OriginalSource;
+
+            while ((dep != null) && !(dep is ListBoxItem))
+            {
+                dep = VisualTreeHelper.GetParent(dep);
+            }
+
+            if (dep != null)
+            {
+                var listBoxItem = dep as ListBoxItem;
+
+                if (!listBoxItem.IsFocused)
+                {
+                    listBoxItem.Focus();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets the datacontext for a given ListBoxItem
+        /// </summary>
+        /// <param name="dep">The dep.</param>
+        /// <returns>System.Object.</returns>
+        private object GetBoundListItemObject(DependencyObject dep)
+        {
+            while ((dep != null) && !(dep is ListBoxItem))
+            {
+                dep = VisualTreeHelper.GetParent(dep);
+            }
+
+            if (dep == null)
+            {
+                return null;
+            }
+
+            return ItemContainerGenerator.ItemFromContainer(dep);
+        }
+
+        /// <summary>
+        /// Autofocuses the first list item when the list is loaded
+        /// </summary>
+        /// <param name="sender">The sender.</param>
+        /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
+        void ItemContainerGeneratorStatusChanged(object sender, EventArgs e)
+        {
+            if (ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated && AutoFocus)
+            {
+                Dispatcher.InvokeAsync(OnContainersGenerated);
+            }
+        }
+
+        /// <summary>
+        /// Called when [containers generated].
+        /// </summary>
+        void OnContainersGenerated()
+        {
+            var index = 0;
+
+            if (index >= 0)
+            {
+                var item = ItemContainerGenerator.ContainerFromIndex(index) as ListBoxItem;
+
+                if (item != null)
+                {
+                    item.Focus();
+                    ItemContainerGenerator.StatusChanged -= ItemContainerGeneratorStatusChanged;
+                }
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/ExtendedRadioButton.cs

@@ -0,0 +1,49 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Extends RadioButton to provide focus on mouse over, and invoke on enter press
+    /// </summary>
+    public class ExtendedRadioButton : RadioButton
+    {
+        private Point? _lastMouseMovePoint;
+
+        /// <summary>
+        /// Handles OnMouseMove to auto-select the item that's being moused over
+        /// </summary>
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+
+            var window = this.GetWindow();
+
+            // If the cursor is currently hidden, don't bother reacting to it
+            if (Cursor == Cursors.None || window.Cursor == Cursors.None)
+            {
+                return;
+            }
+
+            // Store the last position for comparison purposes
+            // Even if the mouse is not moving this event will fire as elements are showing and hiding
+            var pos = e.GetPosition(window);
+
+            if (!_lastMouseMovePoint.HasValue)
+            {
+                _lastMouseMovePoint = pos;
+                return;
+            }
+
+            if (pos == _lastMouseMovePoint)
+            {
+                return;
+            }
+
+            _lastMouseMovePoint = pos;
+
+            Focus();
+        }
+    }
+}

MediaBrowser.UI.Controls/ExtendedScrollViewer.cs

@@ -0,0 +1,41 @@
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// This subclass solves the problem of ScrollViewers eating KeyDown for all arrow keys
+    /// </summary>
+    public class ExtendedScrollViewer : ScrollViewer
+    {
+        protected override void OnKeyDown(KeyEventArgs e)
+        {
+            if (e.Handled || e.OriginalSource == this)
+            {
+                base.OnKeyDown(e);
+                return;
+            } 
+            
+            // Don't eat left/right if horizontal scrolling is disabled
+            if (e.Key == Key.Left || e.Key == Key.Right)
+            {
+                if (HorizontalScrollBarVisibility == ScrollBarVisibility.Disabled)
+                {
+                    return;
+                }
+            }
+
+            // Don't eat up/down if vertical scrolling is disabled
+            if (e.Key == Key.Up || e.Key == Key.Down)
+            {
+                if (VerticalScrollBarVisibility == ScrollBarVisibility.Disabled)
+                {
+                    return;
+                }
+            }
+
+            // Let the base class do it's thing
+            base.OnKeyDown(e);
+        }
+    }
+}

MediaBrowser.UI.Controls/ItemEventArgs.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Provides a generic EventArgs subclass that can hold any kind of object
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    public class ItemEventArgs<T> : EventArgs
+    {
+        /// <summary>
+        /// Gets or sets the argument.
+        /// </summary>
+        /// <value>The argument.</value>
+        public T Argument { get; set; }
+    }
+}

MediaBrowser.UI.Controls/MediaBrowser.UI.Controls.csproj

@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{1ADFE460-FD95-46FA-8871-CCCB4B62E2E8}</ProjectGuid>
+    <OutputType>library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>MediaBrowser.UI.Controls</RootNamespace>
+    <AssemblyName>MediaBrowser.UI.Controls</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.Expression.Effects">
+      <HintPath>..\ThirdParty\Expression\Microsoft.Expression.Effects.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Expression.Interactions">
+      <HintPath>..\ThirdParty\Expression\Microsoft.Expression.Interactions.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="BaseModalWindow.cs" />
+    <Compile Include="BaseUserControl.cs" />
+    <Compile Include="BaseWindow.cs" />
+    <Compile Include="ExtendedButton.cs" />
+    <Compile Include="ExtendedCheckbox.cs" />
+    <Compile Include="ExtendedListBox.cs" />
+    <Compile Include="ExtendedRadioButton.cs" />
+    <Compile Include="ExtendedScrollViewer.cs" />
+    <Compile Include="ItemEventArgs.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <Compile Include="ScrollingPanel.cs" />
+    <Compile Include="TransitionControl.cs" />
+    <Compile Include="TransitionFrame.cs" />
+    <Compile Include="TreeHelper.cs" />
+    <Compile Include="VirtualizingWrapPanel.cs" />
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <AppDesigner Include="Properties\" />
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="Themes\Generic.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

MediaBrowser.UI.Controls/Properties/AssemblyInfo.cs

@@ -0,0 +1,55 @@
+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("MediaBrowser.UI.Controls")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("MediaBrowser.UI.Controls")]
+[assembly: AssemblyCopyright("Copyright ©  2013")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set 
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly:ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                             //(used if a resource is not found in the page, 
+                             // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                      //(used if a resource is not found in the page, 
+                                      // app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

MediaBrowser.UI.Controls/Properties/Resources.Designer.cs

@@ -0,0 +1,62 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.18033
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace MediaBrowser.UI.Controls.Properties {
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if ((resourceMan == null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("MediaBrowser.UI.Controls.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

MediaBrowser.UI.Controls/Properties/Settings.Designer.cs

@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.18033
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace MediaBrowser.UI.Controls.Properties
+{
+    
+    
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+    {
+        
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+        
+        public static Settings Default
+        {
+            get
+            {
+                return defaultInstance;
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/Properties/Settings.settings

@@ -0,0 +1,7 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>

MediaBrowser.UI.Controls/ScrollingPanel.cs

@@ -0,0 +1,404 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// This started from:
+    /// http://www.switchonthecode.com/tutorials/wpf-tutorial-implementing-iscrollinfo
+    /// Then, after implementing this, content was being displayed in stack panel like manner.
+    /// I then reviewed the source code of ScrollContentPresenter and updated MeasureOverride and ArrangeOverride to match.
+    /// </summary>
+    public class ScrollingPanel : Grid, IScrollInfo
+    {
+        /// <summary>
+        /// The infinite size
+        /// </summary>
+        private static Size InfiniteSize = new Size(double.PositiveInfinity, double.PositiveInfinity);
+        /// <summary>
+        /// The line size
+        /// </summary>
+        private const double LineSize = 16;
+        /// <summary>
+        /// The wheel size
+        /// </summary>
+        private const double WheelSize = 3 * LineSize;
+
+        /// <summary>
+        /// The _ offset
+        /// </summary>
+        private Vector _Offset;
+        /// <summary>
+        /// The _ extent
+        /// </summary>
+        private Size _Extent;
+        /// <summary>
+        /// The _ viewport
+        /// </summary>
+        private Size _Viewport;
+
+        /// <summary>
+        /// The _ animation length
+        /// </summary>
+        private TimeSpan _AnimationLength = TimeSpan.FromMilliseconds(125);
+
+        /// <summary>
+        /// When overridden in a derived class, measures the size in layout required for child elements and determines a size for the <see cref="T:System.Windows.FrameworkElement" />-derived class.
+        /// </summary>
+        /// <param name="availableSize">The available size that this element can give to child elements. Infinity can be specified as a value to indicate that the element will size to whatever content is available.</param>
+        /// <returns>The size that this element determines it needs during layout, based on its calculations of child element sizes.</returns>
+        protected override Size MeasureOverride(Size availableSize)
+        {
+            if (Children == null || Children.Count == 0)
+            {
+                return availableSize;
+            }
+
+            var constraint2 = availableSize;
+            if (CanHorizontallyScroll)
+            {
+                constraint2.Width = double.PositiveInfinity;
+            }
+            if (CanVerticallyScroll)
+            {
+                constraint2.Height = double.PositiveInfinity;
+            }
+
+            var uiElement = Children[0];
+
+            uiElement.Measure(constraint2);
+            var size = uiElement.DesiredSize;
+
+            VerifyScrollData(availableSize, size);
+
+            size.Width = Math.Min(availableSize.Width, size.Width);
+            size.Height = Math.Min(availableSize.Height, size.Height);
+
+            return size;
+        }
+
+        /// <summary>
+        /// Arranges the content of a <see cref="T:System.Windows.Controls.Grid" /> element.
+        /// </summary>
+        /// <param name="arrangeSize">Specifies the size this <see cref="T:System.Windows.Controls.Grid" /> element should use to arrange its child elements.</param>
+        /// <returns><see cref="T:System.Windows.Size" /> that represents the arranged size of this Grid element and its children.</returns>
+        protected override Size ArrangeOverride(Size arrangeSize)
+        {
+            this.VerifyScrollData(arrangeSize, _Extent);
+
+            if (this.Children == null || this.Children.Count == 0)
+            {
+                return arrangeSize;
+            }
+
+            TranslateTransform trans = null;
+
+            var uiElement = Children[0];
+
+            var finalRect = new Rect(uiElement.DesiredSize);
+
+            // ScrollContentPresenter sets these to 0 - current offset
+            // We need to set it to zero in order to make the animation work
+            finalRect.X = 0;
+            finalRect.Y = 0;
+
+            finalRect.Width = Math.Max(finalRect.Width, arrangeSize.Width);
+            finalRect.Height = Math.Max(finalRect.Height, arrangeSize.Height);
+
+            trans = uiElement.RenderTransform as TranslateTransform;
+
+            if (trans == null)
+            {
+                uiElement.RenderTransformOrigin = new Point(0, 0);
+                trans = new TranslateTransform();
+                uiElement.RenderTransform = trans;
+            }
+
+            uiElement.Arrange(finalRect);
+
+            trans.BeginAnimation(TranslateTransform.XProperty,
+              GetAnimation(0 - HorizontalOffset),
+              HandoffBehavior.Compose);
+            trans.BeginAnimation(TranslateTransform.YProperty,
+              GetAnimation(0 - VerticalOffset),
+              HandoffBehavior.Compose);
+
+            return arrangeSize;
+        }
+
+        /// <summary>
+        /// Gets the animation.
+        /// </summary>
+        /// <param name="toValue">To value.</param>
+        /// <returns>DoubleAnimation.</returns>
+        private DoubleAnimation GetAnimation(double toValue)
+        {
+            var animation = new DoubleAnimation(toValue, _AnimationLength);
+
+            animation.EasingFunction = new ExponentialEase { EasingMode = EasingMode.EaseInOut };
+
+            return animation;
+        }
+
+        #region Movement Methods
+        /// <summary>
+        /// Scrolls down within content by one logical unit.
+        /// </summary>
+        public void LineDown()
+        { SetVerticalOffset(VerticalOffset + LineSize); }
+
+        /// <summary>
+        /// Scrolls up within content by one logical unit.
+        /// </summary>
+        public void LineUp()
+        { SetVerticalOffset(VerticalOffset - LineSize); }
+
+        /// <summary>
+        /// Scrolls left within content by one logical unit.
+        /// </summary>
+        public void LineLeft()
+        { SetHorizontalOffset(HorizontalOffset - LineSize); }
+
+        /// <summary>
+        /// Scrolls right within content by one logical unit.
+        /// </summary>
+        public void LineRight()
+        { SetHorizontalOffset(HorizontalOffset + LineSize); }
+
+        /// <summary>
+        /// Scrolls down within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelDown()
+        { SetVerticalOffset(VerticalOffset + WheelSize); }
+
+        /// <summary>
+        /// Scrolls up within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelUp()
+        { SetVerticalOffset(VerticalOffset - WheelSize); }
+
+        /// <summary>
+        /// Scrolls left within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelLeft()
+        { SetHorizontalOffset(HorizontalOffset - WheelSize); }
+
+        /// <summary>
+        /// Scrolls right within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelRight()
+        { SetHorizontalOffset(HorizontalOffset + WheelSize); }
+
+        /// <summary>
+        /// Scrolls down within content by one page.
+        /// </summary>
+        public void PageDown()
+        { SetVerticalOffset(VerticalOffset + ViewportHeight); }
+
+        /// <summary>
+        /// Scrolls up within content by one page.
+        /// </summary>
+        public void PageUp()
+        { SetVerticalOffset(VerticalOffset - ViewportHeight); }
+
+        /// <summary>
+        /// Scrolls left within content by one page.
+        /// </summary>
+        public void PageLeft()
+        { SetHorizontalOffset(HorizontalOffset - ViewportWidth); }
+
+        /// <summary>
+        /// Scrolls right within content by one page.
+        /// </summary>
+        public void PageRight()
+        { SetHorizontalOffset(HorizontalOffset + ViewportWidth); }
+        #endregion
+
+        /// <summary>
+        /// Gets or sets a <see cref="T:System.Windows.Controls.ScrollViewer" /> element that controls scrolling behavior.
+        /// </summary>
+        /// <value>The scroll owner.</value>
+        /// <returns>A <see cref="T:System.Windows.Controls.ScrollViewer" /> element that controls scrolling behavior. This property has no default value.</returns>
+        public ScrollViewer ScrollOwner { get; set; }
+
+        /// <summary>
+        /// Gets or sets a value that indicates whether scrolling on the horizontal axis is possible.
+        /// </summary>
+        /// <value><c>true</c> if this instance can horizontally scroll; otherwise, <c>false</c>.</value>
+        /// <returns>true if scrolling is possible; otherwise, false. This property has no default value.</returns>
+        public bool CanHorizontallyScroll { get; set; }
+
+        /// <summary>
+        /// Gets or sets a value that indicates whether scrolling on the vertical axis is possible.
+        /// </summary>
+        /// <value><c>true</c> if this instance can vertically scroll; otherwise, <c>false</c>.</value>
+        /// <returns>true if scrolling is possible; otherwise, false. This property has no default value.</returns>
+        public bool CanVerticallyScroll { get; set; }
+
+        /// <summary>
+        /// Gets the vertical size of the extent.
+        /// </summary>
+        /// <value>The height of the extent.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the vertical size of the extent.This property has no default value.</returns>
+        public double ExtentHeight
+        { get { return _Extent.Height; } }
+
+        /// <summary>
+        /// Gets the horizontal size of the extent.
+        /// </summary>
+        /// <value>The width of the extent.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the horizontal size of the extent. This property has no default value.</returns>
+        public double ExtentWidth
+        { get { return _Extent.Width; } }
+
+        /// <summary>
+        /// Gets the horizontal offset of the scrolled content.
+        /// </summary>
+        /// <value>The horizontal offset.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the horizontal offset. This property has no default value.</returns>
+        public double HorizontalOffset
+        { get { return _Offset.X; } }
+
+        /// <summary>
+        /// Gets the vertical offset of the scrolled content.
+        /// </summary>
+        /// <value>The vertical offset.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the vertical offset of the scrolled content. Valid values are between zero and the <see cref="P:System.Windows.Controls.Primitives.IScrollInfo.ExtentHeight" /> minus the <see cref="P:System.Windows.Controls.Primitives.IScrollInfo.ViewportHeight" />. This property has no default value.</returns>
+        public double VerticalOffset
+        { get { return _Offset.Y; } }
+
+        /// <summary>
+        /// Gets the vertical size of the viewport for this content.
+        /// </summary>
+        /// <value>The height of the viewport.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the vertical size of the viewport for this content. This property has no default value.</returns>
+        public double ViewportHeight
+        { get { return _Viewport.Height; } }
+
+        /// <summary>
+        /// Gets the horizontal size of the viewport for this content.
+        /// </summary>
+        /// <value>The width of the viewport.</value>
+        /// <returns>A <see cref="T:System.Double" /> that represents, in device independent pixels, the horizontal size of the viewport for this content. This property has no default value.</returns>
+        public double ViewportWidth
+        { get { return _Viewport.Width; } }
+
+        /// <summary>
+        /// Forces content to scroll until the coordinate space of a <see cref="T:System.Windows.Media.Visual" /> object is visible.
+        /// </summary>
+        /// <param name="visual">A <see cref="T:System.Windows.Media.Visual" /> that becomes visible.</param>
+        /// <param name="rectangle">A bounding rectangle that identifies the coordinate space to make visible.</param>
+        /// <returns>A <see cref="T:System.Windows.Rect" /> that is visible.</returns>
+        public Rect MakeVisible(Visual visual, Rect rectangle)
+        {
+            if (rectangle.IsEmpty || visual == null
+              || visual == this || !base.IsAncestorOf(visual))
+            { return Rect.Empty; }
+
+            rectangle = visual.TransformToAncestor(this).TransformBounds(rectangle);
+
+            //rectangle.Inflate(50, 50);
+            rectangle.Scale(1.2, 1.2);
+
+            Rect viewRect = new Rect(HorizontalOffset,
+              VerticalOffset, ViewportWidth, ViewportHeight);
+            rectangle.X += viewRect.X;
+            rectangle.Y += viewRect.Y;
+
+            viewRect.X = CalculateNewScrollOffset(viewRect.Left,
+              viewRect.Right, rectangle.Left, rectangle.Right);
+            viewRect.Y = CalculateNewScrollOffset(viewRect.Top,
+              viewRect.Bottom, rectangle.Top, rectangle.Bottom);
+            SetHorizontalOffset(viewRect.X);
+            SetVerticalOffset(viewRect.Y);
+            rectangle.Intersect(viewRect);
+            rectangle.X -= viewRect.X;
+            rectangle.Y -= viewRect.Y;
+
+            return rectangle;
+        }
+
+        /// <summary>
+        /// Calculates the new scroll offset.
+        /// </summary>
+        /// <param name="topView">The top view.</param>
+        /// <param name="bottomView">The bottom view.</param>
+        /// <param name="topChild">The top child.</param>
+        /// <param name="bottomChild">The bottom child.</param>
+        /// <returns>System.Double.</returns>
+        private static double CalculateNewScrollOffset(double topView,
+          double bottomView, double topChild, double bottomChild)
+        {
+            bool offBottom = topChild < topView && bottomChild < bottomView;
+            bool offTop = bottomChild > bottomView && topChild > topView;
+            bool tooLarge = (bottomChild - topChild) > (bottomView - topView);
+
+            if (!offBottom && !offTop)
+            { return topView; } //Don't do anything, already in view
+
+            if ((offBottom && !tooLarge) || (offTop && tooLarge))
+            { return topChild; }
+
+            return (bottomChild - (bottomView - topView));
+        }
+
+        /// <summary>
+        /// Verifies the scroll data.
+        /// </summary>
+        /// <param name="viewport">The viewport.</param>
+        /// <param name="extent">The extent.</param>
+        protected void VerifyScrollData(Size viewport, Size extent)
+        {
+            if (double.IsInfinity(viewport.Width))
+            { viewport.Width = extent.Width; }
+
+            if (double.IsInfinity(viewport.Height))
+            { viewport.Height = extent.Height; }
+
+            _Extent = extent;
+            _Viewport = viewport;
+
+            _Offset.X = Math.Max(0,
+              Math.Min(_Offset.X, ExtentWidth - ViewportWidth));
+            _Offset.Y = Math.Max(0,
+              Math.Min(_Offset.Y, ExtentHeight - ViewportHeight));
+
+            if (ScrollOwner != null)
+            { ScrollOwner.InvalidateScrollInfo(); }
+        }
+
+        /// <summary>
+        /// Sets the amount of horizontal offset.
+        /// </summary>
+        /// <param name="offset">The degree to which content is horizontally offset from the containing viewport.</param>
+        public void SetHorizontalOffset(double offset)
+        {
+            offset = Math.Max(0,
+              Math.Min(offset, ExtentWidth - ViewportWidth));
+            if (!offset.Equals(_Offset.X))
+            {
+                _Offset.X = offset;
+                InvalidateArrange();
+            }
+        }
+
+        /// <summary>
+        /// Sets the amount of vertical offset.
+        /// </summary>
+        /// <param name="offset">The degree to which content is vertically offset from the containing viewport.</param>
+        public void SetVerticalOffset(double offset)
+        {
+            offset = Math.Max(0,
+              Math.Min(offset, ExtentHeight - ViewportHeight));
+            if (!offset.Equals(_Offset.Y))
+            {
+                _Offset.Y = offset;
+                InvalidateArrange();
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/Themes/Generic.xaml

@@ -0,0 +1,17 @@
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="clr-namespace:MediaBrowser.UI.Controls">
+
+    <Style TargetType="local:TransitionControl">
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="local:TransitionControl">
+                    <Grid>
+                        <ContentPresenter x:Name="ContentPresenter" />
+                    </Grid>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+</ResourceDictionary>

MediaBrowser.UI.Controls/TransitionControl.cs

@@ -0,0 +1,147 @@
+using Microsoft.Expression.Media.Effects;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// http://victorcher.blogspot.com/2012/02/wpf-transactions.html
+    /// </summary>
+    public class TransitionControl : ContentControl
+    {
+        /// <summary>
+        /// The _content presenter
+        /// </summary>
+        private ContentPresenter _contentPresenter;
+
+        /// <summary>
+        /// Initializes static members of the <see cref="TransitionControl" /> class.
+        /// </summary>
+        static TransitionControl()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(
+                typeof(TransitionControl), new FrameworkPropertyMetadata(typeof(TransitionControl)));
+
+            ContentProperty.OverrideMetadata(
+                typeof(TransitionControl), new FrameworkPropertyMetadata(OnContentPropertyChanged));
+        }
+
+        /// <summary>
+        /// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate" />.
+        /// </summary>
+        public override void OnApplyTemplate()
+        {
+            base.OnApplyTemplate();
+            _contentPresenter = (ContentPresenter)Template.FindName("ContentPresenter", this);
+        }
+
+        #region DP TransitionType
+
+        /// <summary>
+        /// Gets or sets the type of the transition.
+        /// </summary>
+        /// <value>The type of the transition.</value>
+        public TransitionEffect TransitionType
+        {
+            get { return (TransitionEffect)GetValue(TransitionTypeProperty); }
+            set { SetValue(TransitionTypeProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for TransitionType.  This enables animation, styling, binding, etc...
+        /// <summary>
+        /// The transition type property
+        /// </summary>
+        public static readonly DependencyProperty TransitionTypeProperty =
+            DependencyProperty.Register("TransitionType", typeof(TransitionEffect), typeof(TransitionControl),
+            new UIPropertyMetadata(new BlindsTransitionEffect()));
+
+        #endregion DP TransitionType
+
+        #region DP Transition Animation
+
+        /// <summary>
+        /// Gets or sets the transition animation.
+        /// </summary>
+        /// <value>The transition animation.</value>
+        public DoubleAnimation TransitionAnimation
+        {
+            get { return (DoubleAnimation)GetValue(TransitionAnimationProperty); }
+            set { SetValue(TransitionAnimationProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for TransitionAnimation.  This enables animation, styling, binding, etc...
+        /// <summary>
+        /// The transition animation property
+        /// </summary>
+        public static readonly DependencyProperty TransitionAnimationProperty =
+            DependencyProperty.Register("TransitionAnimation", typeof(DoubleAnimation), typeof(TransitionControl), new UIPropertyMetadata(null));
+
+        #endregion DP Transition Animation
+
+        /// <summary>
+        /// Called when [content property changed].
+        /// </summary>
+        /// <param name="dp">The dp.</param>
+        /// <param name="args">The <see cref="DependencyPropertyChangedEventArgs" /> instance containing the event data.</param>
+        private static void OnContentPropertyChanged(DependencyObject dp, DependencyPropertyChangedEventArgs args)
+        {
+            var oldContent = args.OldValue;
+            var newContent = args.NewValue;
+
+            var transitionControl = (TransitionControl)dp;
+
+            if (DesignerProperties.GetIsInDesignMode(transitionControl))
+                return;
+
+            if (oldContent != null && newContent != null && transitionControl.IsVisible)
+            {
+                transitionControl.AnimateContent(oldContent, newContent);
+            }
+            else if (newContent != null)
+            {
+                transitionControl.Content = newContent;
+            }
+        }
+
+        /// <summary>
+        /// Animates the content.
+        /// </summary>
+        /// <param name="oldContent">The old content.</param>
+        /// <param name="newContent">The new content.</param>
+        private void AnimateContent(object oldContent, object newContent)
+        {
+            FrameworkElement oldContentVisual;
+
+            try
+            {
+                oldContentVisual = VisualTreeHelper.GetChild(_contentPresenter, 0) as FrameworkElement;
+            }
+            catch
+            {
+                return;
+            }
+
+            var transitionEffect = TransitionType;
+
+            if (transitionEffect == null)
+            {
+                _contentPresenter.Content = newContent;
+                return;
+            }
+
+            var da = TransitionAnimation;
+            da.From = 0;
+            da.To = 1;
+            da.FillBehavior = FillBehavior.HoldEnd;
+
+            transitionEffect.OldImage = new VisualBrush(oldContentVisual);
+            transitionEffect.BeginAnimation(TransitionEffect.ProgressProperty, da);
+
+            _contentPresenter.Effect = transitionEffect;
+            _contentPresenter.Content = newContent;
+        }
+    }
+}

MediaBrowser.UI.Controls/TransitionFrame.cs

@@ -0,0 +1,194 @@
+using Microsoft.Expression.Media.Effects;
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Class TransitionFrame
+    /// </summary>
+    public class TransitionFrame : Frame
+    {
+        /// <summary>
+        /// The _content presenter
+        /// </summary>
+        private ContentPresenter _contentPresenter = null;
+
+        #region DP TransitionType
+
+        /// <summary>
+        /// Gets or sets the type of the transition.
+        /// </summary>
+        /// <value>The type of the transition.</value>
+        public TransitionEffect TransitionType
+        {
+            get { return (TransitionEffect)GetValue(TransitionTypeProperty); }
+            set { SetValue(TransitionTypeProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for TransitionType.  This enables animation, styling, binding, etc...
+        /// <summary>
+        /// The transition type property
+        /// </summary>
+        public static readonly DependencyProperty TransitionTypeProperty =
+            DependencyProperty.Register("TransitionType", typeof(TransitionEffect), typeof(TransitionFrame),
+            new UIPropertyMetadata(new BlindsTransitionEffect()));
+
+        #endregion DP TransitionType
+
+        #region DP Transition Animation
+
+        /// <summary>
+        /// Gets or sets the transition animation.
+        /// </summary>
+        /// <value>The transition animation.</value>
+        public DoubleAnimation TransitionAnimation
+        {
+            get { return (DoubleAnimation)GetValue(TransitionAnimationProperty); }
+            set { SetValue(TransitionAnimationProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for TransitionAnimation.  This enables animation, styling, binding, etc...
+        /// <summary>
+        /// The transition animation property
+        /// </summary>
+        public static readonly DependencyProperty TransitionAnimationProperty =
+            DependencyProperty.Register("TransitionAnimation", typeof(DoubleAnimation), typeof(TransitionFrame), new UIPropertyMetadata(null));
+
+        #endregion DP Transition Animation
+
+        /// <summary>
+        /// Called when the template generation for the visual tree is created.
+        /// </summary>
+        public override void OnApplyTemplate()
+        {
+            // get a reference to the frame's content presenter
+            // this is the element we will fade in and out
+            _contentPresenter = GetTemplateChild("PART_FrameCP") as ContentPresenter;
+            base.OnApplyTemplate();
+        }
+
+        /// <summary>
+        /// Animates the content.
+        /// </summary>
+        /// <param name="navigationAction">The navigation action.</param>
+        /// <param name="checkContent">if set to <c>true</c> [check content].</param>
+        /// <param name="isBack">if set to <c>true</c> [is back].</param>
+        private void AnimateContent(Action navigationAction, bool checkContent = true, bool isBack = false)
+        {
+            if (TransitionType == null || (checkContent && Content == null))
+            {
+                CommandBindings.Clear();
+                navigationAction();
+                CommandBindings.Clear();
+                return;
+            }
+            
+            var oldContentVisual = this as FrameworkElement;
+
+            _contentPresenter.IsHitTestVisible = false;
+
+            var da = TransitionAnimation.Clone();
+            da.From = 0;
+            da.To = 1;
+            da.FillBehavior = FillBehavior.HoldEnd;
+
+            var transitionEffect = TransitionType.Clone() as TransitionEffect;
+
+            if (isBack)
+            {
+                ReverseDirection(transitionEffect);
+            }
+
+            transitionEffect.OldImage = new VisualBrush(oldContentVisual);
+            transitionEffect.BeginAnimation(TransitionEffect.ProgressProperty, da);
+
+            _contentPresenter.Effect = transitionEffect;
+            _contentPresenter.IsHitTestVisible = true;
+
+            // Remove base class bindings to remote buttons
+            CommandBindings.Clear();
+
+            navigationAction();
+
+            CommandBindings.Clear();
+        }
+
+        /// <summary>
+        /// Navigates the with transition.
+        /// </summary>
+        /// <param name="page">The page.</param>
+        public void NavigateWithTransition(Page page)
+        {
+            AnimateContent(() => Navigate(page));
+        }
+
+        /// <summary>
+        /// Navigates the with transition.
+        /// </summary>
+        /// <param name="page">The page.</param>
+        public void NavigateWithTransition(Uri page)
+        {
+            AnimateContent(() => Navigate(page));
+        }
+
+        /// <summary>
+        /// Goes the back with transition.
+        /// </summary>
+        public void GoBackWithTransition()
+        {
+            if (CanGoBack)
+            {
+                AnimateContent(GoBack, false, true);
+            }
+        }
+
+        /// <summary>
+        /// Goes the forward with transition.
+        /// </summary>
+        public void GoForwardWithTransition()
+        {
+            if (CanGoForward)
+            {
+                AnimateContent(GoForward, false);
+            }
+        }
+
+        /// <summary>
+        /// Reverses the direction.
+        /// </summary>
+        /// <param name="transitionEffect">The transition effect.</param>
+        private void ReverseDirection(TransitionEffect transitionEffect)
+        {
+            var circleRevealTransitionEffect = transitionEffect as CircleRevealTransitionEffect;
+
+            if (circleRevealTransitionEffect != null)
+            {
+                circleRevealTransitionEffect.Reverse = true;
+                return;
+            }
+
+            var slideInTransitionEffect = transitionEffect as SlideInTransitionEffect;
+            if (slideInTransitionEffect != null)
+            {
+                if (slideInTransitionEffect.SlideDirection == SlideDirection.RightToLeft)
+                {
+                    slideInTransitionEffect.SlideDirection = SlideDirection.LeftToRight;
+                }
+                return;
+            }
+
+            var wipeTransitionEffect = transitionEffect as WipeTransitionEffect;
+            if (wipeTransitionEffect != null)
+            {
+                if (wipeTransitionEffect.WipeDirection == WipeDirection.RightToLeft)
+                {
+                    wipeTransitionEffect.WipeDirection = WipeDirection.LeftToRight;
+                }
+            }
+        }
+    }
+}

MediaBrowser.UI.Controls/TreeHelper.cs

@@ -0,0 +1,321 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Media;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// Helper methods for UI-related tasks.
+    /// </summary>
+    public static class TreeHelper
+    {
+        /// <summary>
+        /// Gets the window.
+        /// </summary>
+        /// <param name="element">The element.</param>
+        /// <returns>Window.</returns>
+        /// <value>The window.</value>
+        public static Window GetWindow(this FrameworkElement element)
+        {
+            return element.ParentOfType<Window>();
+        }
+
+        /// <summary>
+        /// Gets the parent.
+        /// </summary>
+        /// <param name="element">The element.</param>
+        /// <returns>DependencyObject.</returns>
+        private static DependencyObject GetParent(this DependencyObject element)
+        {
+            DependencyObject parent = VisualTreeHelper.GetParent(element);
+            if (parent == null)
+            {
+                FrameworkElement frameworkElement = element as FrameworkElement;
+                if (frameworkElement != null)
+                {
+                    parent = frameworkElement.Parent;
+                }
+            }
+            return parent;
+        }
+
+        /// <summary>
+        /// Gets the parents.
+        /// </summary>
+        /// <param name="element">The element.</param>
+        /// <returns>IEnumerable{DependencyObject}.</returns>
+        /// <exception cref="System.ArgumentNullException">element</exception>
+        public static IEnumerable<DependencyObject> GetParents(this DependencyObject element)
+        {
+            if (element == null)
+            {
+                throw new ArgumentNullException("element");
+            }
+            while ((element = element.GetParent()) != null)
+            {
+                yield return element;
+            }
+            yield break;
+        }
+
+        /// <summary>
+        /// Parents the type of the of.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="element">The element.</param>
+        /// <returns>``0.</returns>
+        public static T ParentOfType<T>(this DependencyObject element) where T : DependencyObject
+        {
+            if (element == null)
+            {
+                return default(T);
+            }
+            return element.GetParents().OfType<T>().FirstOrDefault<T>();
+        }
+
+        /// <summary>
+        /// Finds a Child of a given item in the visual tree.
+        /// </summary>
+        /// <typeparam name="T">The type of the queried item.</typeparam>
+        /// <param name="parent">A direct parent of the queried item.</param>
+        /// <param name="childName">x:Name or Name of child.</param>
+        /// <returns>The first parent item that matches the submitted type parameter.
+        /// If not matching item can be found,
+        /// a null parent is being returned.</returns>
+        public static T FindChild<T>(DependencyObject parent, string childName)
+           where T : DependencyObject
+        {
+            // Confirm parent and childName are valid. 
+            if (parent == null) return null;
+
+            T foundChild = null;
+
+            int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
+            for (int i = 0; i < childrenCount; i++)
+            {
+                var child = VisualTreeHelper.GetChild(parent, i);
+                // If the child is not of the request child type child
+                T childType = child as T;
+                if (childType == null)
+                {
+                    // recursively drill down the tree
+                    foundChild = FindChild<T>(child, childName);
+
+                    // If the child is found, break so we do not overwrite the found child. 
+                    if (foundChild != null) break;
+                }
+                else if (!string.IsNullOrEmpty(childName))
+                {
+                    var frameworkElement = child as FrameworkElement;
+                    // If the child's name is set for search
+                    if (frameworkElement != null && frameworkElement.Name == childName)
+                    {
+                        // if the child's name is of the request name
+                        foundChild = (T)child;
+                        break;
+                    }
+                }
+                else
+                {
+                    // child element found.
+                    foundChild = (T)child;
+                    break;
+                }
+            }
+
+            return foundChild;
+        }
+
+        /// <summary>
+        /// Gets the visual child.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="referenceVisual">The reference visual.</param>
+        /// <returns>``0.</returns>
+        public static T GetVisualChild<T>(this Visual referenceVisual) where T : Visual
+        {
+            Visual child = null;
+            for (Int32 i = 0; i < VisualTreeHelper.GetChildrenCount(referenceVisual); i++)
+            {
+                child = VisualTreeHelper.GetChild(referenceVisual, i) as Visual;
+                if (child != null && (child.GetType() == typeof(T)))
+                {
+                    break;
+                }
+                else if (child != null)
+                {
+                    child = GetVisualChild<T>(child);
+                    if (child != null && (child.GetType() == typeof(T)))
+                    {
+                        break;
+                    }
+                }
+            }
+            return child as T;
+        }
+
+        #region find parent
+
+        /// <summary>
+        /// Finds a parent of a given item on the visual tree.
+        /// </summary>
+        /// <typeparam name="T">The type of the queried item.</typeparam>
+        /// <param name="child">A direct or indirect child of the
+        /// queried item.</param>
+        /// <returns>The first parent item that matches the submitted
+        /// type parameter. If not matching item can be found, a null
+        /// reference is being returned.</returns>
+        public static T TryFindParent<T>(this DependencyObject child)
+            where T : DependencyObject
+        {
+            //get parent item
+            DependencyObject parentObject = GetParentObject(child);
+
+            //we've reached the end of the tree
+            if (parentObject == null) return null;
+
+            //check if the parent matches the type we're looking for
+            T parent = parentObject as T;
+            if (parent != null)
+            {
+                return parent;
+            }
+
+            //use recursion to proceed with next level
+            return TryFindParent<T>(parentObject);
+        }
+
+        /// <summary>
+        /// This method is an alternative to WPF's
+        /// <see cref="VisualTreeHelper.GetParent" /> method, which also
+        /// supports content elements. Keep in mind that for content element,
+        /// this method falls back to the logical tree of the element!
+        /// </summary>
+        /// <param name="child">The item to be processed.</param>
+        /// <returns>The submitted item's parent, if available. Otherwise
+        /// null.</returns>
+        public static DependencyObject GetParentObject(this DependencyObject child)
+        {
+            if (child == null) return null;
+
+            //handle content elements separately
+            ContentElement contentElement = child as ContentElement;
+            if (contentElement != null)
+            {
+                DependencyObject parent = ContentOperations.GetParent(contentElement);
+                if (parent != null) return parent;
+
+                FrameworkContentElement fce = contentElement as FrameworkContentElement;
+                return fce != null ? fce.Parent : null;
+            }
+
+            //also try searching for parent in framework elements (such as DockPanel, etc)
+            FrameworkElement frameworkElement = child as FrameworkElement;
+            if (frameworkElement != null)
+            {
+                DependencyObject parent = frameworkElement.Parent;
+                if (parent != null) return parent;
+            }
+
+            //if it's not a ContentElement/FrameworkElement, rely on VisualTreeHelper
+            return VisualTreeHelper.GetParent(child);
+        }
+
+        #endregion
+
+        #region find children
+
+        /// <summary>
+        /// Analyzes both visual and logical tree in order to find all elements of a given
+        /// type that are descendants of the <paramref name="source" /> item.
+        /// </summary>
+        /// <typeparam name="T">The type of the queried items.</typeparam>
+        /// <param name="source">The root element that marks the source of the search. If the
+        /// source is already of the requested type, it will not be included in the result.</param>
+        /// <returns>All descendants of <paramref name="source" /> that match the requested type.</returns>
+        public static IEnumerable<T> FindChildren<T>(this DependencyObject source) where T : DependencyObject
+        {
+            if (source != null)
+            {
+                var childs = GetChildObjects(source);
+                foreach (DependencyObject child in childs)
+                {
+                    //analyze if children match the requested type
+                    if (child is T)
+                    {
+                        yield return (T)child;
+                    }
+
+                    //recurse tree
+                    foreach (T descendant in FindChildren<T>(child))
+                    {
+                        yield return descendant;
+                    }
+                }
+            }
+        }
+
+
+        /// <summary>
+        /// This method is an alternative to WPF's
+        /// <see cref="VisualTreeHelper.GetChild" /> method, which also
+        /// supports content elements. Keep in mind that for content elements,
+        /// this method falls back to the logical tree of the element.
+        /// </summary>
+        /// <param name="parent">The item to be processed.</param>
+        /// <returns>The submitted item's child elements, if available.</returns>
+        public static IEnumerable<DependencyObject> GetChildObjects(this DependencyObject parent)
+        {
+            if (parent == null) yield break;
+
+            if (parent is ContentElement || parent is FrameworkElement)
+            {
+                //use the logical tree for content / framework elements
+                foreach (object obj in LogicalTreeHelper.GetChildren(parent))
+                {
+                    var depObj = obj as DependencyObject;
+                    if (depObj != null) yield return (DependencyObject)obj;
+                }
+            }
+            else
+            {
+                //use the visual tree per default
+                int count = VisualTreeHelper.GetChildrenCount(parent);
+                for (int i = 0; i < count; i++)
+                {
+                    yield return VisualTreeHelper.GetChild(parent, i);
+                }
+            }
+        }
+
+        #endregion
+
+        #region find from point
+
+        /// <summary>
+        /// Tries to locate a given item within the visual tree,
+        /// starting with the dependency object at a given position.
+        /// </summary>
+        /// <typeparam name="T">The type of the element to be found
+        /// on the visual tree of the element at the given location.</typeparam>
+        /// <param name="reference">The main element which is used to perform
+        /// hit testing.</param>
+        /// <param name="point">The position to be evaluated on the origin.</param>
+        /// <returns>``0.</returns>
+        public static T TryFindFromPoint<T>(UIElement reference, Point point)
+            where T : DependencyObject
+        {
+            DependencyObject element = reference.InputHitTest(point) as DependencyObject;
+
+            if (element == null) return null;
+
+            if (element is T) return (T)element;
+            
+            return TryFindParent<T>(element);
+        }
+
+        #endregion
+    }
+}

MediaBrowser.UI.Controls/VirtualizingWrapPanel.cs

@@ -0,0 +1,735 @@
+using System;
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Media;
+
+namespace MediaBrowser.UI.Controls
+{
+    /// <summary>
+    /// http://www.codeproject.com/Articles/75847/Virtualizing-WrapPanel
+    /// Positions child elements in sequential position from left to right, breaking content 
+    /// to the next line at the edge of the containing box. Subsequent ordering happens 
+    /// sequentially from top to bottom or from right to left, depending on the value of 
+    /// the Orientation property.
+    /// </summary>
+    [DefaultProperty("Orientation")]
+    public class VirtualizingWrapPanel : VirtualizingPanel, IScrollInfo
+    {
+        /// <summary>
+        /// Identifies the ItemHeight dependency property.
+        /// </summary>
+        public static readonly DependencyProperty ItemHeightProperty = DependencyProperty.Register("ItemHeight", typeof(double), typeof(VirtualizingWrapPanel), new PropertyMetadata(100.0, new PropertyChangedCallback(VirtualizingWrapPanel.OnAppearancePropertyChanged)));
+        /// <summary>
+        /// Identifies the Orientation dependency property.
+        /// </summary>
+        public static readonly DependencyProperty OrientationProperty = DependencyProperty.Register("Orientation", typeof(Orientation), typeof(VirtualizingWrapPanel), new PropertyMetadata(Orientation.Horizontal, new PropertyChangedCallback(VirtualizingWrapPanel.OnAppearancePropertyChanged)));
+        /// <summary>
+        /// Identifies the ItemWidth dependency property.
+        /// </summary>
+        public static readonly DependencyProperty ItemWidthProperty = DependencyProperty.Register("ItemWidth", typeof(double), typeof(VirtualizingWrapPanel), new PropertyMetadata(100.0, new PropertyChangedCallback(VirtualizingWrapPanel.OnAppearancePropertyChanged)));
+        /// <summary>
+        /// Identifies the ScrollStep dependency property.
+        /// </summary>
+        public static readonly DependencyProperty ScrollStepProperty = DependencyProperty.Register("ScrollStep", typeof(double), typeof(VirtualizingWrapPanel), new PropertyMetadata(10.0, new PropertyChangedCallback(VirtualizingWrapPanel.OnAppearancePropertyChanged)));
+        private bool canHorizontallyScroll;
+        private bool canVerticallyScroll;
+        private Size contentExtent = new Size(0.0, 0.0);
+        private Point contentOffset = default(Point);
+        private ScrollViewer scrollOwner;
+        private Size viewport = new Size(0.0, 0.0);
+        private int previousItemCount;
+        /// <summary>
+        /// Gets or sets a value that specifies the height of all items that are 
+        /// contained within a VirtualizingWrapPanel. This is a dependency property.
+        /// </summary>
+        public double ItemHeight
+        {
+            get
+            {
+                return (double)base.GetValue(VirtualizingWrapPanel.ItemHeightProperty);
+            }
+            set
+            {
+                base.SetValue(VirtualizingWrapPanel.ItemHeightProperty, value);
+            }
+        }
+        /// <summary>
+        /// Gets or sets a value that specifies the width of all items that are 
+        /// contained within a VirtualizingWrapPanel. This is a dependency property.
+        /// </summary>
+        public double ItemWidth
+        {
+            get
+            {
+                return (double)base.GetValue(VirtualizingWrapPanel.ItemWidthProperty);
+            }
+            set
+            {
+                base.SetValue(VirtualizingWrapPanel.ItemWidthProperty, value);
+            }
+        }
+        /// <summary>
+        /// Gets or sets a value that specifies the dimension in which child 
+        /// content is arranged. This is a dependency property.
+        /// </summary>
+        public Orientation Orientation
+        {
+            get
+            {
+                return (Orientation)base.GetValue(VirtualizingWrapPanel.OrientationProperty);
+            }
+            set
+            {
+                base.SetValue(VirtualizingWrapPanel.OrientationProperty, value);
+            }
+        }
+        /// <summary>
+        /// Gets or sets a value that indicates whether scrolling on the horizontal axis is possible.
+        /// </summary>
+        public bool CanHorizontallyScroll
+        {
+            get
+            {
+                return this.canHorizontallyScroll;
+            }
+            set
+            {
+                if (this.canHorizontallyScroll != value)
+                {
+                    this.canHorizontallyScroll = value;
+                    base.InvalidateMeasure();
+                }
+            }
+        }
+        /// <summary>
+        /// Gets or sets a value that indicates whether scrolling on the vertical axis is possible.
+        /// </summary>
+        public bool CanVerticallyScroll
+        {
+            get
+            {
+                return this.canVerticallyScroll;
+            }
+            set
+            {
+                if (this.canVerticallyScroll != value)
+                {
+                    this.canVerticallyScroll = value;
+                    base.InvalidateMeasure();
+                }
+            }
+        }
+        /// <summary>
+        /// Gets or sets a ScrollViewer element that controls scrolling behavior.
+        /// </summary>
+        public ScrollViewer ScrollOwner
+        {
+            get
+            {
+                return this.scrollOwner;
+            }
+            set
+            {
+                this.scrollOwner = value;
+            }
+        }
+        /// <summary>
+        /// Gets the vertical offset of the scrolled content.
+        /// </summary>
+        public double VerticalOffset
+        {
+            get
+            {
+                return this.contentOffset.Y;
+            }
+        }
+        /// <summary>
+        /// Gets the vertical size of the viewport for this content.
+        /// </summary>
+        public double ViewportHeight
+        {
+            get
+            {
+                return this.viewport.Height;
+            }
+        }
+        /// <summary>
+        /// Gets the horizontal size of the viewport for this content.
+        /// </summary>
+        public double ViewportWidth
+        {
+            get
+            {
+                return this.viewport.Width;
+            }
+        }
+        /// <summary>
+        /// Gets or sets a value for mouse wheel scroll step.
+        /// </summary>
+        public double ScrollStep
+        {
+            get
+            {
+                return (double)base.GetValue(VirtualizingWrapPanel.ScrollStepProperty);
+            }
+            set
+            {
+                base.SetValue(VirtualizingWrapPanel.ScrollStepProperty, value);
+            }
+        }
+        /// <summary>
+        /// Gets the vertical size of the extent.
+        /// </summary>
+        public double ExtentHeight
+        {
+            get
+            {
+                return this.contentExtent.Height;
+            }
+        }
+        /// <summary>
+        /// Gets the horizontal size of the extent.
+        /// </summary>
+        public double ExtentWidth
+        {
+            get
+            {
+                return this.contentExtent.Width;
+            }
+        }
+        /// <summary>
+        /// Gets the horizontal offset of the scrolled content.
+        /// </summary>
+        public double HorizontalOffset
+        {
+            get
+            {
+                return this.contentOffset.X;
+            }
+        }
+        /// <summary>
+        /// Scrolls down within content by one logical unit.
+        /// </summary>
+        public void LineDown()
+        {
+            this.SetVerticalOffset(this.VerticalOffset + this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls left within content by one logical unit.
+        /// </summary>
+        public void LineLeft()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset - this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls right within content by one logical unit.
+        /// </summary>
+        public void LineRight()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset + this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls up within content by one logical unit.
+        /// </summary>
+        public void LineUp()
+        {
+            this.SetVerticalOffset(this.VerticalOffset - this.ScrollStep);
+        }
+        /// <summary>
+        /// Forces content to scroll until the coordinate space of a Visual object is visible.
+        /// </summary>
+        public Rect MakeVisible(Visual visual, Rect rectangle)
+        {
+            this.MakeVisible(visual as UIElement);
+            return rectangle;
+        }
+        /// <summary>
+        /// Scrolls down within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelDown()
+        {
+            this.SetVerticalOffset(this.VerticalOffset + this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls left within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelLeft()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset - this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls right within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelRight()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset + this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls up within content after a user clicks the wheel button on a mouse.
+        /// </summary>
+        public void MouseWheelUp()
+        {
+            this.SetVerticalOffset(this.VerticalOffset - this.ScrollStep);
+        }
+        /// <summary>
+        /// Scrolls down within content by one page.
+        /// </summary>
+        public void PageDown()
+        {
+            this.SetVerticalOffset(this.VerticalOffset + this.ViewportHeight);
+        }
+        /// <summary>
+        /// Scrolls left within content by one page.
+        /// </summary>
+        public void PageLeft()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset - this.ViewportHeight);
+        }
+        /// <summary>
+        /// Scrolls right within content by one page.
+        /// </summary>
+        public void PageRight()
+        {
+            this.SetHorizontalOffset(this.HorizontalOffset + this.ViewportHeight);
+        }
+        /// <summary>
+        /// Scrolls up within content by one page.
+        /// </summary>
+        public void PageUp()
+        {
+            this.SetVerticalOffset(this.VerticalOffset - this.viewport.Height);
+        }
+        /// <summary>
+        /// Sets the amount of vertical offset.
+        /// </summary>
+        public void SetVerticalOffset(double offset)
+        {
+            if (offset < 0.0 || this.ViewportHeight >= this.ExtentHeight)
+            {
+                offset = 0.0;
+            }
+            else
+            {
+                if (offset + this.ViewportHeight >= this.ExtentHeight)
+                {
+                    offset = this.ExtentHeight - this.ViewportHeight;
+                }
+            }
+            this.contentOffset.Y = offset;
+            if (this.ScrollOwner != null)
+            {
+                this.ScrollOwner.InvalidateScrollInfo();
+            }
+            base.InvalidateMeasure();
+        }
+        /// <summary>
+        /// Sets the amount of horizontal offset.
+        /// </summary>
+        public void SetHorizontalOffset(double offset)
+        {
+            if (offset < 0.0 || this.ViewportWidth >= this.ExtentWidth)
+            {
+                offset = 0.0;
+            }
+            else
+            {
+                if (offset + this.ViewportWidth >= this.ExtentWidth)
+                {
+                    offset = this.ExtentWidth - this.ViewportWidth;
+                }
+            }
+            this.contentOffset.X = offset;
+            if (this.ScrollOwner != null)
+            {
+                this.ScrollOwner.InvalidateScrollInfo();
+            }
+            base.InvalidateMeasure();
+        }
+        /// <summary>
+        /// Note: Works only for vertical.
+        /// </summary>
+        internal void PageLast()
+        {
+            this.contentOffset.Y = this.ExtentHeight;
+            if (this.ScrollOwner != null)
+            {
+                this.ScrollOwner.InvalidateScrollInfo();
+            }
+            base.InvalidateMeasure();
+        }
+        /// <summary>
+        /// Note: Works only for vertical.
+        /// </summary>
+        internal void PageFirst()
+        {
+            this.contentOffset.Y = 0.0;
+            if (this.ScrollOwner != null)
+            {
+                this.ScrollOwner.InvalidateScrollInfo();
+            }
+            base.InvalidateMeasure();
+        }
+        /// <summary>
+        /// When items are removed, remove the corresponding UI if necessary.
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="args"></param>
+        protected override void OnItemsChanged(object sender, ItemsChangedEventArgs args)
+        {
+            switch (args.Action)
+            {
+                case NotifyCollectionChangedAction.Remove:
+                case NotifyCollectionChangedAction.Replace:
+                case NotifyCollectionChangedAction.Move:
+                    base.RemoveInternalChildRange(args.Position.Index, args.ItemUICount);
+                    return;
+                case NotifyCollectionChangedAction.Reset:
+                    {
+                        ItemsControl itemsControl = ItemsControl.GetItemsOwner(this);
+                        if (itemsControl != null)
+                        {
+                            if (this.previousItemCount != itemsControl.Items.Count)
+                            {
+                                if (this.Orientation == Orientation.Horizontal)
+                                {
+                                    this.SetVerticalOffset(0.0);
+                                }
+                                else
+                                {
+                                    this.SetHorizontalOffset(0.0);
+                                }
+                            }
+                            this.previousItemCount = itemsControl.Items.Count;
+                        }
+                        return;
+                    }
+                default:
+                    return;
+            }
+        }
+        /// <summary>
+        /// Measure the children.
+        /// </summary>
+        /// <param name="availableSize">The available size.</param>
+        /// <returns>The desired size.</returns>
+        protected override Size MeasureOverride(Size availableSize)
+        {
+            this.InvalidateScrollInfo(availableSize);
+            int firstVisibleIndex;
+            int lastVisibleIndex;
+            if (this.Orientation == Orientation.Horizontal)
+            {
+                this.GetVerticalVisibleRange(out firstVisibleIndex, out lastVisibleIndex);
+            }
+            else
+            {
+                this.GetHorizontalVisibleRange(out firstVisibleIndex, out lastVisibleIndex);
+            }
+            UIElementCollection children = base.Children;
+            IItemContainerGenerator generator = base.ItemContainerGenerator;
+            if (generator != null)
+            {
+                GeneratorPosition startPos = generator.GeneratorPositionFromIndex(firstVisibleIndex);
+                int childIndex = (startPos.Offset == 0) ? startPos.Index : (startPos.Index + 1);
+                if (childIndex == -1)
+                {
+                    this.RefreshOffset();
+                }
+                using (generator.StartAt(startPos, GeneratorDirection.Forward, true))
+                {
+                    int itemIndex = firstVisibleIndex;
+                    while (itemIndex <= lastVisibleIndex)
+                    {
+                        bool newlyRealized;
+                        UIElement child = generator.GenerateNext(out newlyRealized) as UIElement;
+                        if (newlyRealized)
+                        {
+                            if (childIndex >= children.Count)
+                            {
+                                base.AddInternalChild(child);
+                            }
+                            else
+                            {
+                                base.InsertInternalChild(childIndex, child);
+                            }
+                            generator.PrepareItemContainer(child);
+                        }
+                        if (child != null)
+                        {
+                            child.Measure(new Size(this.ItemWidth, this.ItemHeight));
+                        }
+                        itemIndex++;
+                        childIndex++;
+                    }
+                }
+                this.CleanUpChildren(firstVisibleIndex, lastVisibleIndex);
+            }
+            if (IsCloseTo(availableSize.Height, double.PositiveInfinity) || IsCloseTo(availableSize.Width, double.PositiveInfinity))
+            {
+                return base.MeasureOverride(availableSize);
+            }
+
+            var itemsControl = ItemsControl.GetItemsOwner(this);
+            var numItems = itemsControl.Items.Count;
+
+            var width = availableSize.Width;
+            var height = availableSize.Height;
+
+            if (Orientation == Orientation.Vertical)
+            {
+                var numRows = Math.Floor(availableSize.Height / ItemHeight);
+
+                height = numRows * ItemHeight;
+
+                var requiredColumns = Math.Ceiling(numItems / numRows);
+
+                width = Math.Min(requiredColumns * ItemWidth, width);
+            }
+            else
+            {
+                var numColumns = Math.Floor(availableSize.Width / ItemWidth);
+
+                width = numColumns * ItemWidth;
+
+                //if (numItems > 0 && numItems < numColumns)
+                //{
+                //    width = Math.Min(numColumns, numItems) * ItemWidth;
+                //}
+
+                var requiredRows = Math.Ceiling(numItems / numColumns);
+
+                height = Math.Min(requiredRows * ItemHeight, height);
+            }
+
+            return new Size(width, height);
+        }
+
+        /// <summary>
+        /// Arranges the children.
+        /// </summary>
+        /// <param name="finalSize">The available size.</param>
+        /// <returns>The used size.</returns>
+        protected override Size ArrangeOverride(Size finalSize)
+        {
+            bool isHorizontal = this.Orientation == Orientation.Horizontal;
+            this.InvalidateScrollInfo(finalSize);
+            int i = 0;
+            foreach (object item in base.Children)
+            {
+                this.ArrangeChild(isHorizontal, finalSize, i++, item as UIElement);
+            }
+            return finalSize;
+        }
+        private static void OnAppearancePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            UIElement panel = d as UIElement;
+            if (panel != null)
+            {
+                panel.InvalidateMeasure();
+            }
+        }
+        private void MakeVisible(UIElement element)
+        {
+            ItemContainerGenerator generator = base.ItemContainerGenerator.GetItemContainerGeneratorForPanel(this);
+            if (element != null && generator != null)
+            {
+                for (int itemIndex = generator.IndexFromContainer(element); itemIndex == -1; itemIndex = generator.IndexFromContainer(element))
+                {
+                    element = element.ParentOfType<UIElement>();
+                }
+                ScrollViewer scrollViewer = element.ParentOfType<ScrollViewer>();
+                if (scrollViewer != null)
+                {
+                    GeneralTransform elementTransform = element.TransformToVisual(scrollViewer);
+                    Rect elementRectangle = elementTransform.TransformBounds(new Rect(new Point(0.0, 0.0), element.RenderSize));
+
+                    if (this.Orientation == Orientation.Horizontal)
+                    {
+                        var padding = ItemHeight / 3;
+
+                        if (elementRectangle.Bottom > this.ViewportHeight)
+                        {
+                            this.SetVerticalOffset(this.contentOffset.Y + elementRectangle.Bottom - this.ViewportHeight + padding);
+                            return;
+                        }
+                        if (elementRectangle.Top < 0.0)
+                        {
+                            this.SetVerticalOffset(this.contentOffset.Y + elementRectangle.Top - padding);
+                            return;
+                        }
+                    }
+                    else
+                    {
+                        var padding = ItemWidth / 3;
+
+                        if (elementRectangle.Right > this.ViewportWidth)
+                        {
+                            this.SetHorizontalOffset(this.contentOffset.X + elementRectangle.Right - this.ViewportWidth + padding);
+                            return;
+                        }
+                        if (elementRectangle.Left < 0.0)
+                        {
+                            this.SetHorizontalOffset(this.contentOffset.X + elementRectangle.Left - padding);
+                        }
+                    }
+                }
+            }
+        }
+        private void GetVerticalVisibleRange(out int firstVisibleItemIndex, out int lastVisibleItemIndex)
+        {
+            int childrenPerRow = this.GetVerticalChildrenCountPerRow(this.contentExtent);
+            firstVisibleItemIndex = (int)Math.Floor(this.VerticalOffset / this.ItemHeight) * childrenPerRow;
+            lastVisibleItemIndex = (int)Math.Ceiling((this.VerticalOffset + this.ViewportHeight) / this.ItemHeight) * childrenPerRow - 1;
+            this.AdjustVisibleRange(ref firstVisibleItemIndex, ref lastVisibleItemIndex);
+        }
+        private void GetHorizontalVisibleRange(out int firstVisibleItemIndex, out int lastVisibleItemIndex)
+        {
+            int childrenPerRow = this.GetHorizontalChildrenCountPerRow(this.contentExtent);
+            firstVisibleItemIndex = (int)Math.Floor(this.HorizontalOffset / this.ItemWidth) * childrenPerRow;
+            lastVisibleItemIndex = (int)Math.Ceiling((this.HorizontalOffset + this.ViewportWidth) / this.ItemWidth) * childrenPerRow - 1;
+            this.AdjustVisibleRange(ref firstVisibleItemIndex, ref lastVisibleItemIndex);
+        }
+        private void AdjustVisibleRange(ref int firstVisibleItemIndex, ref int lastVisibleItemIndex)
+        {
+            firstVisibleItemIndex--;
+            lastVisibleItemIndex++;
+            ItemsControl itemsControl = ItemsControl.GetItemsOwner(this);
+            if (itemsControl != null)
+            {
+                if (firstVisibleItemIndex < 0)
+                {
+                    firstVisibleItemIndex = 0;
+                }
+                if (lastVisibleItemIndex >= itemsControl.Items.Count)
+                {
+                    lastVisibleItemIndex = itemsControl.Items.Count - 1;
+                }
+            }
+        }
+        private void CleanUpChildren(int minIndex, int maxIndex)
+        {
+            UIElementCollection children = base.Children;
+            IItemContainerGenerator generator = base.ItemContainerGenerator;
+            for (int i = children.Count - 1; i >= 0; i--)
+            {
+                GeneratorPosition pos = new GeneratorPosition(i, 0);
+                int itemIndex = generator.IndexFromGeneratorPosition(pos);
+                if (itemIndex < minIndex || itemIndex > maxIndex)
+                {
+                    generator.Remove(pos, 1);
+                    base.RemoveInternalChildRange(i, 1);
+                }
+            }
+        }
+        private void ArrangeChild(bool isHorizontal, Size finalSize, int index, UIElement child)
+        {
+            if (child == null)
+            {
+                return;
+            }
+            int count = isHorizontal ? this.GetVerticalChildrenCountPerRow(finalSize) : this.GetHorizontalChildrenCountPerRow(finalSize);
+            int itemIndex = base.ItemContainerGenerator.IndexFromGeneratorPosition(new GeneratorPosition(index, 0));
+            int row = isHorizontal ? (itemIndex / count) : (itemIndex % count);
+            int column = isHorizontal ? (itemIndex % count) : (itemIndex / count);
+            Rect rect = new Rect((double)column * this.ItemWidth, (double)row * this.ItemHeight, this.ItemWidth, this.ItemHeight);
+            if (isHorizontal)
+            {
+                rect.Y -= this.VerticalOffset;
+            }
+            else
+            {
+                rect.X -= this.HorizontalOffset;
+            }
+            child.Arrange(rect);
+        }
+        private void InvalidateScrollInfo(Size availableSize)
+        {
+            ItemsControl ownerItemsControl = ItemsControl.GetItemsOwner(this);
+            if (ownerItemsControl != null)
+            {
+                Size extent = this.GetExtent(availableSize, ownerItemsControl.Items.Count);
+                if (extent != this.contentExtent)
+                {
+                    this.contentExtent = extent;
+                    this.RefreshOffset();
+                }
+                if (availableSize != this.viewport)
+                {
+                    this.viewport = availableSize;
+                    this.InvalidateScrollOwner();
+                }
+            }
+        }
+        private void RefreshOffset()
+        {
+            if (this.Orientation == Orientation.Horizontal)
+            {
+                this.SetVerticalOffset(this.VerticalOffset);
+                return;
+            }
+            this.SetHorizontalOffset(this.HorizontalOffset);
+        }
+        private void InvalidateScrollOwner()
+        {
+            if (this.ScrollOwner != null)
+            {
+                this.ScrollOwner.InvalidateScrollInfo();
+            }
+        }
+        private Size GetExtent(Size availableSize, int itemCount)
+        {
+            if (this.Orientation == Orientation.Horizontal)
+            {
+                int childrenPerRow = this.GetVerticalChildrenCountPerRow(availableSize);
+                return new Size((double)childrenPerRow * this.ItemWidth, this.ItemHeight * Math.Ceiling((double)itemCount / (double)childrenPerRow));
+            }
+            int childrenPerRow2 = this.GetHorizontalChildrenCountPerRow(availableSize);
+            return new Size(this.ItemWidth * Math.Ceiling((double)itemCount / (double)childrenPerRow2), (double)childrenPerRow2 * this.ItemHeight);
+        }
+        private int GetVerticalChildrenCountPerRow(Size availableSize)
+        {
+            int childrenCountPerRow;
+            if (availableSize.Width == double.PositiveInfinity)
+            {
+                childrenCountPerRow = base.Children.Count;
+            }
+            else
+            {
+                childrenCountPerRow = Math.Max(1, (int)Math.Floor(availableSize.Width / this.ItemWidth));
+            }
+            return childrenCountPerRow;
+        }
+        private int GetHorizontalChildrenCountPerRow(Size availableSize)
+        {
+            int childrenCountPerRow;
+            if (availableSize.Height == double.PositiveInfinity)
+            {
+                childrenCountPerRow = base.Children.Count;
+            }
+            else
+            {
+                childrenCountPerRow = Math.Max(1, (int)Math.Floor(availableSize.Height / this.ItemHeight));
+            }
+            return childrenCountPerRow;
+        }
+
+        private static bool IsCloseTo(double value1, double value2)
+        {
+            return AreClose(value1, value2);
+        }
+
+        private static bool AreClose(double value1, double value2)
+        {
+            if (value1 == value2)
+            {
+                return true;
+            }
+            double num = (Math.Abs(value1) + Math.Abs(value2) + 10.0) * 2.2204460492503131E-16;
+            double num2 = value1 - value2;
+            return -num < num2 && num > num2;
+        }
+    }
+}