Merge pull request #81 from HandyOrg/pr/80

Pr/80

src/Shared/HandyControlDemo_Shared/UserControl/Controls/TabControlDemoCtl.xaml

@@ -7,7 +7,7 @@
         <controls:ScrollViewer HorizontalScrollBarVisibility="Auto">
             <StackPanel>
                 <Label Style="{StaticResource LabelPrimary}" Content="Default" Margin="32,32,0,0" HorizontalAlignment="Left"/>
-                <controls:TabControl Margin="32,16,32,0" Width="800" Height="300">
+                <controls:TabControl Margin="32,16,32,0" Width="800" Height="300" IsScrollable="True">
                     <controls:TabItem Header="TabItem1">
                         <controls:SimplePanel Background="White"/>
                     </controls:TabItem>

src/Shared/HandyControl_Shared/Controls/Other/ScrollViewer.cs

@@ -114,7 +114,8 @@ namespace HandyControl.Controls
                 _isRunning = false;
             };
             _isRunning = true;
-            BeginAnimation(CurrentVerticalOffsetProperty, animation);
+
+            BeginAnimation(CurrentVerticalOffsetProperty, animation, HandoffBehavior.Compose);
         }
 
         internal void ScrollToHorizontalOffsetInternal(double offset, double milliseconds = 500)
@@ -131,7 +132,8 @@ namespace HandyControl.Controls
                 _isRunning = false;
             };
             _isRunning = true;
-            BeginAnimation(CurrentHorizontalOffsetProperty, animation);
+
+            BeginAnimation(CurrentHorizontalOffsetProperty, animation, HandoffBehavior.Compose);
         }
 
         protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters) =>
@@ -150,7 +152,7 @@ namespace HandyControl.Controls
 
         public static bool GetIsEnableInertia(DependencyObject element)
         {
-            return (bool) element.GetValue(IsEnableInertiaProperty);
+            return (bool)element.GetValue(IsEnableInertiaProperty);
         }
 
         /// <summary>
@@ -158,7 +160,7 @@ namespace HandyControl.Controls
         /// </summary>
         public bool IsEnableInertia
         {
-            get => (bool)GetValue(IsEnableInertiaProperty);
+            get => (bool) GetValue(IsEnableInertiaProperty);
             set => SetValue(IsEnableInertiaProperty, value);
         }
 
@@ -173,7 +175,7 @@ namespace HandyControl.Controls
         /// </summary>
         public bool IsPenetrating
         {
-            get => (bool)GetValue(IsPenetratingProperty);
+            get => (bool) GetValue(IsPenetratingProperty);
             set => SetValue(IsPenetratingProperty, value);
         }
 

src/Shared/HandyControl_Shared/Controls/TabControl/TabControl.cs

@@ -3,6 +3,7 @@ using System.Collections.Specialized;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
+using System.Windows.Input;
 using HandyControl.Data;
 using HandyControl.Tools.Extension;
 
@@ -10,16 +11,31 @@ namespace HandyControl.Controls
 {
     [TemplatePart(Name = OverflowButtonKey, Type = typeof(ContextMenuToggleButton))]
     [TemplatePart(Name = HeaderPanelKey, Type = typeof(TabPanel))]
+    [TemplatePart(Name = OverflowScrollviewer, Type = typeof(ScrollViewer))]
+    [TemplatePart(Name = ScrollButtonLeft, Type = typeof(Button))]
+    [TemplatePart(Name = ScrollButtonRight, Type = typeof(Button))]
     public class TabControl : System.Windows.Controls.TabControl
     {
         private const string OverflowButtonKey = "PART_OverflowButton";
 
         private const string HeaderPanelKey = "PART_HeaderPanel";
 
+        private const string OverflowScrollviewer = "PART_OverflowScrollviewer";
+
+        private const string ScrollButtonLeft = "PART_ScrollButtonLeft";
+
+        private const string ScrollButtonRight = "PART_ScrollButtonRight";
+
         private ContextMenuToggleButton _buttonOverflow;
 
         private TabPanel _headerPanel;
 
+        private ScrollViewer _scrollviewerOverflow;
+
+        private Button _buttonScrollLeft;
+
+        private Button _buttonScrollRight;
+
         /// <summary>
         ///     是否为内部操作
         /// </summary>
@@ -115,6 +131,21 @@ namespace HandyControl.Controls
             set => SetValue(TabItemHeightProperty, value);
         }
 
+        /// <summary>
+        ///     是否可以滚动
+        /// </summary>
+        public static readonly DependencyProperty IsScrollableProperty = DependencyProperty.Register(
+            "IsScrollable", typeof(bool), typeof(TabControl), new PropertyMetadata(ValueBoxes.FalseBox));
+
+        /// <summary>
+        ///     是否可以滚动
+        /// </summary>
+        public bool IsScrollable
+        {
+            get => (bool) GetValue(IsScrollableProperty);
+            set => SetValue(IsScrollableProperty, value);
+        }
+
         /// <summary>
         ///     可见的标签数量
         /// </summary>
@@ -133,7 +164,7 @@ namespace HandyControl.Controls
             if (!IsEnableTabFill)
             {
                 _itemShowCount = (int)(ActualWidth / TabItemWidth);
-                _buttonOverflow.Show(Items.Count > 0  && Items.Count >= _itemShowCount);
+                _buttonOverflow.Show(Items.Count > 0 && Items.Count >= _itemShowCount);
             }
 
             if (IsInternalAction)
@@ -163,12 +194,33 @@ namespace HandyControl.Controls
 
         public override void OnApplyTemplate()
         {
+            if (_buttonOverflow != null)
+            {
+                if (_buttonOverflow.Menu != null)
+                {
+                    _buttonOverflow.Menu.Closed -= Menu_Closed;
+                    _buttonOverflow.Menu = null;
+                }
+
+                _buttonOverflow.Click -= ButtonOverflow_Click;
+            }
+
+            if (_buttonScrollLeft != null) _buttonScrollLeft.Click -= ButtonScrollLeft_Click;
+            if (_buttonScrollRight != null) _buttonScrollRight.Click -= ButtonScrollRight_Click;
+
             base.OnApplyTemplate();
             _headerPanel = Template.FindName(HeaderPanelKey, this) as TabPanel;
 
             if (IsEnableTabFill) return;
 
             _buttonOverflow = Template.FindName(OverflowButtonKey, this) as ContextMenuToggleButton;
+            _scrollviewerOverflow = Template.FindName(OverflowScrollviewer, this) as ScrollViewer;
+            _buttonScrollLeft = Template.FindName(ScrollButtonLeft, this) as Button;
+            _buttonScrollRight = Template.FindName(ScrollButtonRight, this) as Button;
+
+            if (_buttonScrollLeft != null) _buttonScrollLeft.Click += ButtonScrollLeft_Click;
+            if (_buttonScrollRight != null) _buttonScrollRight.Click += ButtonScrollRight_Click;
+
             if (_buttonOverflow != null)
             {
                 _itemShowCount = (int)(ActualWidth / TabItemWidth);
@@ -179,49 +231,68 @@ namespace HandyControl.Controls
                     Placement = PlacementMode.Bottom,
                     PlacementTarget = _buttonOverflow
                 };
-                menu.Closed += (s, e) => _buttonOverflow.IsChecked = false;
+                menu.Closed += Menu_Closed;
                 _buttonOverflow.Menu = menu;
-                _buttonOverflow.Click += (s, e) =>
+                _buttonOverflow.Click += ButtonOverflow_Click;
-                {
-                    if (_buttonOverflow.IsChecked == true)
-                    {
-                        _buttonOverflow.Menu.Items.Clear();
-                        foreach (TabItem item in Items)
-                        {
-                            var menuItem = new MenuItem
-                            {
-                                Header = item.Header,
-                                Width = TabItemWidth,
-                                IsChecked = item.IsSelected,
-                                IsCheckable = true
-                            };
-                            menuItem.Click += delegate
-                            {
-                                _buttonOverflow.IsChecked = false;
-                                var index = Items.IndexOf(item);
-                                if (index >= _itemShowCount)
-                                {
-                                    Items.Remove(item);
-                                    Items.Insert(0, item);
-                                    if (IsEnableAnimation)
-                                    {
-                                        _headerPanel.ClearValue(TabPanel.FluidMoveDurationProperty);
-                                    }
-                                    else
-                                    {
-                                        _headerPanel.FluidMoveDuration = new Duration(TimeSpan.FromSeconds(0));
-                                    }
-                                    _headerPanel.ForceUpdate = true;
-                                    _headerPanel.Measure(new Size(_headerPanel.DesiredSize.Width, ActualHeight));
-                                    _headerPanel.ForceUpdate = false;
-                                }
-                                item.IsSelected = true;
-                            };
-                            _buttonOverflow.Menu.Items.Add(menuItem);
-                        }
-                    }
-                };
             }
         }
+
+        private void Menu_Closed(object sender, RoutedEventArgs e) => _buttonOverflow.IsChecked = false;
+
+        private void ButtonScrollRight_Click(object sender, RoutedEventArgs e) =>
+            _scrollviewerOverflow.ScrollToHorizontalOffsetInternal(Math.Min(
+                _scrollviewerOverflow.CurrentHorizontalOffset + TabItemWidth, _scrollviewerOverflow.ScrollableWidth));
+
+        private void ButtonScrollLeft_Click(object sender, RoutedEventArgs e) =>
+            _scrollviewerOverflow.ScrollToHorizontalOffsetInternal(Math.Max(
+                _scrollviewerOverflow.CurrentHorizontalOffset - TabItemWidth, 0));
+
+        private void ButtonOverflow_Click(object sender, RoutedEventArgs e)
+        {
+            if (_buttonOverflow.IsChecked == true)
+            {
+                _buttonOverflow.Menu.Items.Clear();
+                foreach (TabItem item in Items)
+                {
+                    var menuItem = new MenuItem
+                    {
+                        Header = item.Header,
+                        Width = TabItemWidth,
+                        IsChecked = item.IsSelected,
+                        IsCheckable = true
+                    };
+                    menuItem.Click += delegate
+                    {
+                        _buttonOverflow.IsChecked = false;
+                        var index = Items.IndexOf(item);
+                        if (index >= _itemShowCount)
+                        {
+                            Items.Remove(item);
+                            Items.Insert(0, item);
+                            if (IsEnableAnimation)
+                            {
+                                _headerPanel.ClearValue(TabPanel.FluidMoveDurationProperty);
+                            }
+                            else
+                            {
+                                _headerPanel.FluidMoveDuration = new Duration(TimeSpan.FromSeconds(0));
+                            }
+                            _headerPanel.ForceUpdate = true;
+                            _headerPanel.Measure(new Size(_headerPanel.DesiredSize.Width, ActualHeight));
+                            _headerPanel.ForceUpdate = false;
+                        }
+                        item.IsSelected = true;
+                    };
+                    _buttonOverflow.Menu.Items.Add(menuItem);
+                }
+            }
+        }
+
+        internal double GetHorizontalOffset() => _scrollviewerOverflow?.CurrentHorizontalOffset ?? 0;
+
+        internal void UpdateScroll() => _scrollviewerOverflow?.RaiseEvent(new MouseWheelEventArgs(Mouse.PrimaryDevice, Environment.TickCount, 0)
+        {
+            RoutedEvent = MouseWheelEvent
+        });
     }
 }

src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs

@@ -87,6 +87,11 @@ namespace HandyControl.Controls
         /// </summary>
         private int _currentIndex;
 
+        /// <summary>
+        ///     标签容器横向滚动距离
+        /// </summary>
+        private double _scrollHorizontalOffset;
+
         /// <summary>
         ///     标签容器
         /// </summary>
@@ -178,17 +183,21 @@ namespace HandyControl.Controls
             base.OnMouseLeftButtonDown(e);
             if (TabControlParent.IsDraggable && !ItemIsDragging && !_isDragging)
             {
+                TabControlParent.UpdateScroll();
                 TabPanel.FluidMoveDuration = new Duration(TimeSpan.FromSeconds(0));
                 _mouseDownOffsetX = RenderTransform.Value.OffsetX;
-                var mx = TranslatePoint(new Point(), TabControlParent).X;
+                _scrollHorizontalOffset = TabControlParent.GetHorizontalOffset();
+                var mx = TranslatePoint(new Point(), TabControlParent).X + _scrollHorizontalOffset;
                 _mouseDownIndex = CalLocationIndex(mx);
-                _maxMoveLeft = -_mouseDownIndex * ItemWidth;
+                var subIndex = _mouseDownIndex - CalLocationIndex(_scrollHorizontalOffset);
+                _maxMoveLeft = -subIndex * ItemWidth;
                 _maxMoveRight = TabControlParent.ActualWidth - ActualWidth + _maxMoveLeft;
 
                 _isDragging = true;
                 ItemIsDragging = true;
                 _isWaiting = true;
                 _dragPoint = e.GetPosition(TabControlParent);
+                _dragPoint = new Point(_dragPoint.X + +_scrollHorizontalOffset, _dragPoint.Y);
                 _mouseDownPoint = _dragPoint;
                 CaptureMouse();
             }
@@ -199,9 +208,10 @@ namespace HandyControl.Controls
             base.OnMouseMove(e);
             if (ItemIsDragging && _isDragging)
             {
-                var subX = TranslatePoint(new Point(), TabControlParent).X;
+                var subX = TranslatePoint(new Point(), TabControlParent).X + _scrollHorizontalOffset;
                 CurrentIndex = CalLocationIndex(subX);
                 var p = e.GetPosition(TabControlParent);
+                p = new Point(p.X + _scrollHorizontalOffset, p.Y);
                 var subLeft = p.X - _dragPoint.X;
                 var totalLeft = p.X - _mouseDownPoint.X;
 
@@ -229,7 +239,7 @@ namespace HandyControl.Controls
             ReleaseMouseCapture();
             if (_isDragged)
             {
-                var subX = TranslatePoint(new Point(), TabControlParent).X;
+                var subX = TranslatePoint(new Point(), TabControlParent).X + _scrollHorizontalOffset;
                 var index = CalLocationIndex(subX);
                 var left = index * ItemWidth;
                 var offsetX = RenderTransform.Value.OffsetX;
@@ -273,7 +283,7 @@ namespace HandyControl.Controls
             animation.Completed += (s1, e1) => AnimationCompleted();
             var f = new TranslateTransform(offsetX, 0);
             RenderTransform = f;
-            f.BeginAnimation(TranslateTransform.XProperty, animation);
+            f.BeginAnimation(TranslateTransform.XProperty, animation, HandoffBehavior.Compose);
         }
 
         /// <summary>

src/Shared/HandyControl_Shared/Themes/Styles/TabControl.xaml

@@ -71,6 +71,85 @@
         </Setter>
     </Style>
 
+    <ControlTemplate x:Key="TabControlPlusTemplate" TargetType="controls:TabControl">
+        <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
+            <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition x:Name="ColumnDefinition0"/>
+                    <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
+                </Grid.ColumnDefinitions>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="*"/>
+                </Grid.RowDefinitions>
+                <Border Background="{TemplateBinding Background}" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource BorderBrush}">
+                    <controls:TabPanel MinHeight="{TemplateBinding TabItemHeight}" TabItemHeight="{TemplateBinding TabItemHeight}" TabItemWidth="{TemplateBinding TabItemWidth}" IsEnableTabFill="{TemplateBinding IsEnableTabFill}" Margin="0,0,-1,-1" x:Name="PART_HeaderPanel" HorizontalAlignment="Left" Background="{DynamicResource SecondaryTextBrush}" IsItemsHost="true" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1">
+                        <interactivity:Interaction.Behaviors>
+                            <interactivity:FluidMoveBehavior AppliesTo="Children" Duration="{Binding FluidMoveDuration,ElementName=PART_HeaderPanel}">
+                                <interactivity:FluidMoveBehavior.EaseX>
+                                    <CubicEase EasingMode="EaseOut"/>
+                                </interactivity:FluidMoveBehavior.EaseX>
+                            </interactivity:FluidMoveBehavior>
+                        </interactivity:Interaction.Behaviors>
+                    </controls:TabPanel>
+                </Border>
+                <Border x:Name="contentPanel" Background="{DynamicResource SecondaryRegionBrush}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
+                    <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                </Border>
+                <Border Visibility="{Binding Visibility,ElementName=PART_OverflowButton}" Margin="0,-1,0,0" Grid.Row="0" Grid.Column="0" BorderThickness="1,0,0,1" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}" HorizontalAlignment="Right">
+                    <controls:ContextMenuToggleButton x:Name="PART_OverflowButton" Visibility="Collapsed" Style="{StaticResource ToggleButtonIconTransparent}" controls:IconSwitchElement.Geometry="{StaticResource DownGeometry}" controls:IconSwitchElement.GeometrySelected="{StaticResource UpGeometry}"/>
+                </Border>
+            </Grid>
+        </Border>
+    </ControlTemplate>
+
+    <ControlTemplate x:Key="TabControlPlusScrollableTemplate" TargetType="controls:TabControl">
+        <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
+            <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto"/>
+                    <ColumnDefinition/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="*"/>
+                </Grid.RowDefinitions>
+                <Border Visibility="{Binding Visibility,ElementName=PART_OverflowButton}" Margin="0,-1,0,0" Grid.Row="0" Grid.Column="0" BorderThickness="0,0,1,1" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}" HorizontalAlignment="Left" Panel.ZIndex="2">
+                    <Border.CacheMode>
+                        <BitmapCache SnapsToDevicePixels="True"/>
+                    </Border.CacheMode>
+                    <Button Style="{StaticResource ButtonIcon}" Padding="8" controls:IconElement.Geometry="{StaticResource LeftGeometry}" Foreground="{DynamicResource PrimaryTextBrush}" Background="{DynamicResource SecondaryRegionBrush}" x:Name="PART_ScrollButtonLeft"/>
+                </Border>
+                <controls:ScrollViewer HorizontalScrollBarVisibility="Hidden" CanMouseWheel="True" Orientation="Horizontal" IsEnableInertia="True" Grid.Row="0" Grid.Column="1" IsDeferredScrollingEnabled="True" x:Name="PART_OverflowScrollviewer">
+                    <Border Background="{TemplateBinding Background}" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource BorderBrush}" >
+                        <controls:TabPanel MinHeight="{TemplateBinding TabItemHeight}" TabItemHeight="{TemplateBinding TabItemHeight}" TabItemWidth="{TemplateBinding TabItemWidth}" IsEnableTabFill="{TemplateBinding IsEnableTabFill}" Margin="0,0,-1,-1" x:Name="PART_HeaderPanel" HorizontalAlignment="Left" Background="{DynamicResource SecondaryTextBrush}" IsItemsHost="true" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1">
+                            <interactivity:Interaction.Behaviors>
+                                <interactivity:FluidMoveBehavior AppliesTo="Children" Duration="{Binding FluidMoveDuration,ElementName=PART_HeaderPanel}">
+                                    <interactivity:FluidMoveBehavior.EaseX>
+                                        <CubicEase EasingMode="EaseOut"/>
+                                    </interactivity:FluidMoveBehavior.EaseX>
+                                </interactivity:FluidMoveBehavior>
+                            </interactivity:Interaction.Behaviors>
+                        </controls:TabPanel>
+                    </Border>
+                </controls:ScrollViewer>
+                <Border Visibility="{Binding Visibility,ElementName=PART_OverflowButton}" Margin="0,-1,0,0" Grid.Row="0" Grid.Column="2" BorderThickness="1,0,0,1" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}" HorizontalAlignment="Right">
+                    <Border.CacheMode>
+                        <BitmapCache SnapsToDevicePixels="True"/>
+                    </Border.CacheMode>
+                    <StackPanel Orientation="Horizontal">
+                        <Button Style="{StaticResource ButtonIcon}" BorderBrush="{DynamicResource BorderBrush}" Padding="8" BorderThickness="0,0,1,0" controls:IconElement.Geometry="{StaticResource RightGeometry}" Foreground="{DynamicResource PrimaryTextBrush}" Background="{DynamicResource SecondaryRegionBrush}" x:Name="PART_ScrollButtonRight"/>
+                        <controls:ContextMenuToggleButton x:Name="PART_OverflowButton" Visibility="Collapsed" Style="{StaticResource ToggleButtonIconTransparent}" controls:IconSwitchElement.Geometry="{StaticResource DownGeometry}" controls:IconSwitchElement.GeometrySelected="{StaticResource UpGeometry}"/>
+                    </StackPanel>
+                </Border>
+                <Border x:Name="contentPanel" Background="{DynamicResource SecondaryRegionBrush}" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
+                    <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                </Border>
+            </Grid>
+        </Border>
+    </ControlTemplate>
+
     <Style TargetType="controls:TabControl">
         <Setter Property="Padding" Value="0"/>
         <Setter Property="Background" Value="{DynamicResource RegionBrush}"/>
@@ -78,41 +157,16 @@
         <Setter Property="HorizontalContentAlignment" Value="Center"/>
         <Setter Property="VerticalContentAlignment" Value="Center"/>
         <Setter Property="BorderThickness" Value="1"/>
-        <Setter Property="Template">
+        <Setter Property="Template" Value="{StaticResource TabControlPlusTemplate}"/>
-            <Setter.Value>
+        <Style.Triggers>
-                <ControlTemplate TargetType="controls:TabControl">
+            <MultiTrigger>
-                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
+                <MultiTrigger.Conditions>
-                        <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
+                    <Condition Property="IsScrollable" Value="True"/>
-                            <Grid.ColumnDefinitions>
+                    <Condition Property="IsEnableTabFill" Value="False"/>
-                                <ColumnDefinition x:Name="ColumnDefinition0"/>
+                </MultiTrigger.Conditions>
-                                <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
+                <Setter Property="Template" Value="{StaticResource TabControlPlusScrollableTemplate}"/>
-                            </Grid.ColumnDefinitions>
+            </MultiTrigger>
-                            <Grid.RowDefinitions>
+        </Style.Triggers>
-                                <RowDefinition x:Name="RowDefinition0" Height="Auto"/>
-                                <RowDefinition x:Name="RowDefinition1" Height="*"/>
-                            </Grid.RowDefinitions>
-                            <Border Background="{TemplateBinding Background}" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource BorderBrush}">
-                                <controls:TabPanel MinHeight="{TemplateBinding TabItemHeight}" TabItemHeight="{TemplateBinding TabItemHeight}" TabItemWidth="{TemplateBinding TabItemWidth}" IsEnableTabFill="{TemplateBinding IsEnableTabFill}" Margin="0,0,-1,-1" x:Name="PART_HeaderPanel" HorizontalAlignment="Left" Background="{DynamicResource SecondaryTextBrush}" IsItemsHost="true" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1">
-                                    <interactivity:Interaction.Behaviors>
-                                        <interactivity:FluidMoveBehavior AppliesTo="Children" Duration="{Binding FluidMoveDuration,ElementName=PART_HeaderPanel}">
-                                            <interactivity:FluidMoveBehavior.EaseX>
-                                                <CubicEase EasingMode="EaseOut"/>
-                                            </interactivity:FluidMoveBehavior.EaseX>
-                                        </interactivity:FluidMoveBehavior>
-                                    </interactivity:Interaction.Behaviors>
-                                </controls:TabPanel>
-                            </Border>
-                            <Border x:Name="contentPanel" Background="{DynamicResource SecondaryRegionBrush}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
-                                <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </Border>
-                            <Border Visibility="{Binding Visibility,ElementName=PART_OverflowButton}" Margin="0,-1,0,0" Grid.Row="0" Grid.Column="0" BorderThickness="1,0,0,1" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}" HorizontalAlignment="Right">
-                                <controls:ContextMenuToggleButton x:Name="PART_OverflowButton" Visibility="Collapsed" Style="{StaticResource ToggleButtonIconTransparent}" controls:IconSwitchElement.Geometry="{StaticResource DownGeometry}" controls:IconSwitchElement.GeometrySelected="{StaticResource UpGeometry}"/>
-                            </Border>
-                        </Grid>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
     </Style>
 
     <Style BasedOn="{StaticResource TabControlBaseStyle}" TargetType="TabControl"/>