improved tabcontrol

src/Shared/HandyControlDemo_Shared/HandyControlDemo_Shared.projitems

@@ -292,6 +292,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Controls\SearchBarDemoViewModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Controls\SideMenuDemoViewModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Controls\StepBarDemoViewModel.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Controls\TabControlDemoViewModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Controls\WindowDemoViewModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\DemoViewModelBase!1.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ViewModel\Main\ContributorsViewModel.cs" />

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

@@ -2,12 +2,22 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              Background="{DynamicResource RegionBrush}"
-             xmlns:controls="clr-namespace:HandyControl.Controls;assembly=HandyControl">
+             DataContext="{Binding TabControlDemo,Source={StaticResource Locator}}"
+             xmlns:controls="clr-namespace:HandyControl.Controls;assembly=HandyControl"
+             xmlns:interactivity="clr-namespace:HandyControl.Interactivity;assembly=HandyControl">
     <controls:TransitioningContentControl>
         <controls:ScrollViewer HorizontalScrollBarVisibility="Auto">
+            <interactivity:Interaction.Triggers>
+                <interactivity:RoutedEventTrigger RoutedEvent="controls:TabItem.Closing">
+                    <interactivity:EventToCommand Command="{Binding ClosingCmd}" PassEventArgsToCommand="True" />
+                </interactivity:RoutedEventTrigger>
+                <interactivity:RoutedEventTrigger RoutedEvent="controls:TabItem.Closed">
+                    <interactivity:EventToCommand Command="{Binding ClosedCmd}" PassEventArgsToCommand="True" />
+                </interactivity:RoutedEventTrigger>
+            </interactivity:Interaction.Triggers>
             <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" IsScrollable="True">
+                <controls:TabControl ShowOverflowButton="False" ShowScrollButton="True" Margin="32,16,32,0" Width="800" Height="300" IsScrollable="True">
                     <controls:TabItem Header="TabItem1">
                         <controls:SimplePanel Background="White"/>
                     </controls:TabItem>

src/Shared/HandyControlDemo_Shared/ViewModel/Controls/TabControlDemoViewModel.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Windows;
+using GalaSoft.MvvmLight;
+using HandyControl.Controls;
+using HandyControl.Data;
+#if netle40
+using GalaSoft.MvvmLight.Command;
+#else
+using GalaSoft.MvvmLight.CommandWpf;
+#endif
+
+namespace HandyControlDemo.ViewModel
+{
+    public class TabControlDemoViewModel : ViewModelBase
+    {
+        public RelayCommand<CancelRoutedEventArgs> ClosingCmd => new Lazy<RelayCommand<CancelRoutedEventArgs>>(() =>
+            new RelayCommand<CancelRoutedEventArgs>(Closing)).Value;
+
+        private void Closing(CancelRoutedEventArgs args)
+        {
+            Growl.Info($"{(args.OriginalSource as TabItem)?.Header} Closing");
+        }
+
+        public RelayCommand<RoutedEventArgs> ClosedCmd => new Lazy<RelayCommand<RoutedEventArgs>>(() =>
+            new RelayCommand<RoutedEventArgs>(Closed)).Value;
+
+        private void Closed(RoutedEventArgs args)
+        {
+            Growl.Info($"{(args.OriginalSource as TabItem)?.Header} Closed");
+        }
+    }
+}

src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs

@@ -34,6 +34,7 @@ namespace HandyControlDemo.ViewModel
             SimpleIoc.Default.Register<InteractiveDialogViewModel>();
             SimpleIoc.Default.Register<BadgeDemoViewModel>();
             SimpleIoc.Default.Register<SideMenuDemoViewModel>();
+            SimpleIoc.Default.Register<TabControlDemoViewModel>();
         }
 
         public static ViewModelLocator Instance => new Lazy<ViewModelLocator>(() =>
@@ -75,6 +76,8 @@ namespace HandyControlDemo.ViewModel
 
         public SideMenuDemoViewModel SideMenuDemo => ServiceLocator.Current.GetInstance<SideMenuDemoViewModel>();
 
+        public TabControlDemoViewModel TabControlDemo => ServiceLocator.Current.GetInstance<TabControlDemoViewModel>();
+
         #endregion
     }
 }

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

@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using System.Collections.Specialized;
 using System.Windows;
 using System.Windows.Controls;
@@ -30,7 +31,7 @@ namespace HandyControl.Controls
 
         private TabPanel _headerPanel;
 
-        private ScrollViewer _scrollviewerOverflow;
+        private ScrollViewer _scrollViewerOverflow;
 
         private Button _buttonScrollLeft;
 
@@ -146,6 +147,36 @@ namespace HandyControl.Controls
             set => SetValue(IsScrollableProperty, value);
         }
 
+        /// <summary>
+        ///     是否显示溢出按钮
+        /// </summary>
+        public static readonly DependencyProperty ShowOverflowButtonProperty = DependencyProperty.Register(
+            "ShowOverflowButton", typeof(bool), typeof(TabControl), new PropertyMetadata(ValueBoxes.TrueBox));
+
+        /// <summary>
+        ///     是否显示溢出按钮
+        /// </summary>
+        public bool ShowOverflowButton
+        {
+            get => (bool) GetValue(ShowOverflowButtonProperty);
+            set => SetValue(ShowOverflowButtonProperty, value);
+        }
+
+        /// <summary>
+        ///     是否显示滚动按钮
+        /// </summary>
+        public static readonly DependencyProperty ShowScrollButtonProperty = DependencyProperty.Register(
+            "ShowScrollButton", typeof(bool), typeof(TabControl), new PropertyMetadata(ValueBoxes.FalseBox));
+
+        /// <summary>
+        ///     是否显示滚动按钮
+        /// </summary>
+        public bool ShowScrollButton
+        {
+            get => (bool) GetValue(ShowScrollButtonProperty);
+            set => SetValue(ShowScrollButtonProperty, value);
+        }
+
         /// <summary>
         ///     可见的标签数量
         /// </summary>
@@ -164,7 +195,7 @@ namespace HandyControl.Controls
             if (!IsEnableTabFill)
             {
                 _itemShowCount = (int)(ActualWidth / TabItemWidth);
-                _buttonOverflow.Show(Items.Count > 0 && Items.Count >= _itemShowCount);
+                _buttonOverflow?.Show(ShowOverflowButton && Items.Count > 0 && Items.Count >= _itemShowCount);
             }
 
             if (IsInternalAction)
@@ -214,7 +245,7 @@ namespace HandyControl.Controls
             if (IsEnableTabFill) return;
 
             _buttonOverflow = GetTemplateChild(OverflowButtonKey) as ContextMenuToggleButton;
-            _scrollviewerOverflow = GetTemplateChild(OverflowScrollviewer) as ScrollViewer;
+            _scrollViewerOverflow = GetTemplateChild(OverflowScrollviewer) as ScrollViewer;
             _buttonScrollLeft = GetTemplateChild(ScrollButtonLeft) as Button;
             _buttonScrollRight = GetTemplateChild(ScrollButtonRight) as Button;
 
@@ -224,7 +255,7 @@ namespace HandyControl.Controls
             if (_buttonOverflow != null)
             {
                 _itemShowCount = (int)(ActualWidth / TabItemWidth);
-                _buttonOverflow.Show(Items.Count > 0 && Items.Count >= _itemShowCount);
+                _buttonOverflow.Show(ShowOverflowButton && Items.Count > 0 && Items.Count >= _itemShowCount);
 
                 var menu = new ContextMenu
                 {
@@ -240,12 +271,12 @@ namespace HandyControl.Controls
         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));
+            _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));
+            _scrollViewerOverflow.ScrollToHorizontalOffsetInternal(Math.Max(
+                _scrollViewerOverflow.CurrentHorizontalOffset - TabItemWidth, 0));
 
         private void ButtonOverflow_Click(object sender, RoutedEventArgs e)
         {
@@ -288,11 +319,37 @@ namespace HandyControl.Controls
             }
         }
 
-        internal double GetHorizontalOffset() => _scrollviewerOverflow?.CurrentHorizontalOffset ?? 0;
+        internal double GetHorizontalOffset() => _scrollViewerOverflow?.CurrentHorizontalOffset ?? 0;
 
-        internal void UpdateScroll() => _scrollviewerOverflow?.RaiseEvent(new MouseWheelEventArgs(Mouse.PrimaryDevice, Environment.TickCount, 0)
+        internal void UpdateScroll() => _scrollViewerOverflow?.RaiseEvent(new MouseWheelEventArgs(Mouse.PrimaryDevice, Environment.TickCount, 0)
         {
             RoutedEvent = MouseWheelEvent
         });
+
+        internal void CloseAllItems() => CloseOtherItems(null);
+
+        internal void CloseOtherItems(TabItem currentItem)
+        {
+            IsInternalAction = true;
+            var enumerator = ((IEnumerable)Items).GetEnumerator();
+            while (enumerator.MoveNext())
+            {
+                var item = enumerator.Current;
+                if (!Equals(item, currentItem) && item != null)
+                {
+                    var argsClosing = new CancelRoutedEventArgs(TabItem.ClosingEvent, item);
+                    var elment = item as UIElement;
+                    if (elment != null)
+                    {
+                        elment.RaiseEvent(argsClosing);
+                        if (argsClosing.Cancel) return;
+                    }
+
+                    elment?.RaiseEvent(new RoutedEventArgs(TabItem.ClosedEvent, item));
+                    Items.Remove(item);
+                    enumerator = ((IEnumerable)Items).GetEnumerator();
+                }
+            }
+        }
     }
 }

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

@@ -1,10 +1,10 @@
 using System;
-using System.Collections;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
+using HandyControl.Data;
 using HandyControl.Interactivity;
 using HandyControl.Tools;
 
@@ -130,26 +130,11 @@ namespace HandyControl.Controls
 
         public TabItem()
         {
-            CommandBindings.Add(new CommandBinding(ControlCommands.Close, Close));
-            CommandBindings.Add(new CommandBinding(ControlCommands.CloseAll, (s, e) =>
-            {
-                TabControlParent.IsInternalAction = true;
-                TabControlParent.Items.Clear();
-            }));
-            CommandBindings.Add(new CommandBinding(ControlCommands.CloseOther, (s, e) =>
-            {
-                TabControlParent.IsInternalAction = true;
-                var enumerator = ((IEnumerable)TabControlParent.Items).GetEnumerator();
-                while (enumerator.MoveNext())
-                {
-                    var item = enumerator.Current;
-                    if (!Equals(item) && item != null)
-                    {
-                        TabControlParent.Items.Remove(item);
-                        enumerator = ((IEnumerable)TabControlParent.Items).GetEnumerator();
-                    }
-                }
-            }));
+            CommandBindings.Add(new CommandBinding(ControlCommands.Close, (s, e) => Close()));
+            CommandBindings.Add(new CommandBinding(ControlCommands.CloseAll,
+                (s, e) => { TabControlParent.CloseAllItems(); }));
+            CommandBindings.Add(new CommandBinding(ControlCommands.CloseOther,
+                (s, e) => { TabControlParent.CloseOtherItems(this); }));
         }
 
         private TabControl TabControlParent => new Lazy<TabControl>(() => ItemsControl.ItemsControlFromItemContainer(this) as TabControl).Value;
@@ -161,11 +146,12 @@ namespace HandyControl.Controls
             Focus();
         }
 
-        /// <summary>
-        ///     关闭
-        /// </summary>
-        private void Close(object sender, RoutedEventArgs e)
+        internal void Close()
         {
+            var argsClosing = new CancelRoutedEventArgs(ClosingEvent, this);
+            RaiseEvent(argsClosing);
+            if (argsClosing.Cancel) return;
+
             if (TabControlParent.IsEnableAnimation)
             {
                 TabPanel.ClearValue(TabPanel.FluidMoveDurationProperty);
@@ -175,6 +161,7 @@ namespace HandyControl.Controls
                 TabPanel.FluidMoveDuration = new Duration(TimeSpan.FromSeconds(0));
             }
             TabControlParent.IsInternalAction = true;
+            RaiseEvent(new RoutedEventArgs(ClosedEvent, this));
             TabControlParent.Items.Remove(this);
         }
 
@@ -300,5 +287,21 @@ namespace HandyControl.Controls
 
             return result > maxIndex ? maxIndex : result;
         }
+
+        public static readonly RoutedEvent ClosingEvent = EventManager.RegisterRoutedEvent("Closing", RoutingStrategy.Bubble, typeof(EventHandler), typeof(TabItem));
+
+        public event EventHandler Closing
+        {
+            add => AddHandler(ClosingEvent, value);
+            remove => RemoveHandler(ClosingEvent, value);
+        }
+
+        public static readonly RoutedEvent ClosedEvent = EventManager.RegisterRoutedEvent("Closed", RoutingStrategy.Bubble, typeof(EventHandler), typeof(TabItem));
+
+        public event EventHandler Closed
+        {
+            add => AddHandler(ClosedEvent, value);
+            remove => RemoveHandler(ClosedEvent, value);
+        }
     }
 }

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

@@ -115,7 +115,7 @@
                     <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 Visibility="{TemplateBinding ShowScrollButton,Converter={StaticResource Boolean2VisibilityConverter}}" 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>
@@ -134,12 +134,13 @@
                         </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 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"/>
+                        <Button Visibility="{TemplateBinding ShowScrollButton,Converter={StaticResource Boolean2VisibilityConverter}}" Style="{StaticResource ButtonIcon}" BorderBrush="{DynamicResource BorderBrush}" Padding="8" controls:IconElement.Geometry="{StaticResource RightGeometry}" Foreground="{DynamicResource PrimaryTextBrush}" Background="{DynamicResource SecondaryRegionBrush}" x:Name="PART_ScrollButtonRight"/>
+                        <Border Visibility="{Binding Visibility,ElementName=PART_OverflowButton}" Width="1" Background="{DynamicResource BorderBrush}"/>
                         <controls:ContextMenuToggleButton x:Name="PART_OverflowButton" Visibility="Collapsed" Style="{StaticResource ToggleButtonIconTransparent}" controls:IconSwitchElement.Geometry="{StaticResource DownGeometry}" controls:IconSwitchElement.GeometrySelected="{StaticResource UpGeometry}"/>
                     </StackPanel>
                 </Border>