improved tabcontrol

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);
+        }
     }
 }