可关闭的TabItem<自定义控件>

可关闭TabItem的Header：

前台代码：

<UserControl x:Class="CloseableTabItem_Test.CloseableTabItemHeader"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Name="columnLabel" Width="*"></ColumnDefinition>
            <ColumnDefinition Name="columnCloseButton" Width="20"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Label Name="lblTitle" Grid.Column="0" Style="{StaticResource CloseableTabItemLabel_RD}"/>
        <Button Name="btnClose" Grid.Column="1" FontFamily="Courier" FontWeight="Bold" Style="{StaticResource CloseableTabItemButton_RD}"/>
    </Grid>
</UserControl>

后台代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace CloseableTabItem_Test
{
    /// <summary>
    /// CloseableTabItemHeader.xaml 的交互逻辑
    /// </summary>
    public partial class CloseableTabItemHeader : UserControl
    {
        /// <summary>
        ///  实例化可关闭标签项
        /// </summary>
        public CloseableTabItemHeader()
        {
            InitializeComponent();
            Title = lblTitle.Content as string;
        }

        /// <summary>
        /// 实例化可关闭标签项(给定标题文本)
        /// </summary>
        /// <param name="title">Title</param>
        public CloseableTabItemHeader(string title)
        {
            InitializeComponent();
            Title = title;
        }

        // 可关闭标签项文本
        private string _title;

        /// <summary>
        /// 设置标题
        /// </summary>
        public string Title
        {
            get { return _title; }
            set
            {
                _title = value;
                lblTitle.Content = _title;
            }
        }

    }
}

资源字典以及App.xml的设置：

CloseableTabStyle.xaml中：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <!--Header中的文字Label样式-->
    <Style x:Key="CloseableTabItemLabel_RD" TargetType="Label">
        <Setter Property="Foreground" Value="White" />
    </Style>
    <!--Header中的Button样式-->
    <Style x:Key="CloseableTabItemButton_RD" TargetType="Button">
        <Setter Property="Foreground" Value="White" />
        <Setter Property="FontFamily" Value="Courier" />
        <Setter Property="FontWeight" Value="Bold" />
        <Setter Property="FontStretch" Value="Normal" />
        <Setter Property="FontSize" Value="14" />
        <Setter Property="Padding" Value="0" />
        <Setter Property="ToolTip" Value="Close" />
        <Setter Property="Content" Value="×" />
        <Setter Property="Height" Value="20" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" Background="#00000000" SnapsToDevicePixels="true">
                        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" TargetName="border" Value="#B3CA0300" />
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter Property="Background" TargetName="border" Value="#F0CA0300" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <!--TabItem样式-->
    <Style x:Key="TabItemStyle" TargetType="{x:Type TabItem}">
        <Setter Property="Background" Value="#0082BC" />
        <Setter Property="Foreground" Value="Black"/>
        <Setter Property="Padding" Value="6,1,6,1"/>
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        <Setter Property="VerticalContentAlignment" Value="Stretch"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type TabItem}">
                    <Grid SnapsToDevicePixels="true">
                        <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1,1,1,0" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}">
                            <ContentPresenter x:Name="Content" ContentSource="Header" HorizontalAlignment="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
                        </Border>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsSelected" Value="true">
                            <Setter Property="Panel.ZIndex" Value="1"/>
                            <Setter Property="Background" TargetName="Bd" Value="#FF8C05"/>
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="false"/>
                                <Condition Property="IsMouseOver" Value="true"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="Bd" Value="#3FA1CD"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="IsMouseOver" Value="true"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="Bd" Value="#FFA337"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="TabStripPlacement" Value="Top"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Margin" Value="-2,-2,-2,-1"/>
                            <Setter Property="Margin" TargetName="Content" Value="0,0,0,1"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="TabStripPlacement" Value="Bottom"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Margin" Value="-2,-1,-2,-2"/>
                            <Setter Property="Margin" TargetName="Content" Value="0,1,0,0"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="TabStripPlacement" Value="Left"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Margin" Value="-2,-2,-1,-2"/>
                            <Setter Property="Margin" TargetName="Content" Value="0,0,1,0"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="TabStripPlacement" Value="Right"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Margin" Value="-1,-2,-2,-2"/>
                            <Setter Property="Margin" TargetName="Content" Value="1,0,0,0"/>
                        </MultiTrigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

App.xml中：

<Application x:Class="CloseableTabItem_Test.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="CloseableTabStyle.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

可关闭TabItem的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace CloseableTabItem_Test
{
    /// <summary>
    /// 是否自动排序
    /// </summary>
    public enum SortWay
    {
        IsAutoSort, NotSort
    }

    public class CloseableTabItem : TabItem
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public delegate void CloseButtonDelegate(object sender, RoutedEventArgs e);

        /// <summary>
        /// 选项卡TabItem关闭时事件
        /// </summary>
        public event RoutedEventHandler TabItemClosing;

        /// <summary>
        /// 实例化标签项
        /// </summary>
        public CloseableTabItem()
            : this("New tab")
        { }

        /// <summary>
        /// 实例化标签项(给定标题)
        /// </summary>
        /// <param name="title">新标签项的标题字符串</param>
        public CloseableTabItem(string title)
            : this(title, SortWay.NotSort)
        {
        }

        /// <summary>
        /// 实例化标签项(给定标题,给定是否自动排序)
        /// </summary>
        /// <param name="title">标题</param>
        /// <param name="isAutoSort">是否自动排序</param>
        public CloseableTabItem(string title, SortWay sortWay)
        {
            //设定样式
            this.Style = (Style)Application.Current.Resources["TabItemStyle"];
            //生产一个可关闭的Header
            CloseableTabItemHeader ctih = createCloseableTabItem();
            //自动排序
            switch (sortWay)
            {
                case SortWay.IsAutoSort:
                    break;
                case SortWay.NotSort:
                    break;
                default:
                    break;
            }
            //设定标题
            ctih.Title = title;
            //设定Header
            this.Header = ctih;
        }

        /// <summary>
        /// 创建一个标签页头
        /// </summary>
        /// <returns>标签页头(自定义控件)</returns>
        private CloseableTabItemHeader createCloseableTabItem()
        {
            //实例化一个Header
            CloseableTabItemHeader ctih = new CloseableTabItemHeader();
            //添加关闭按钮点击事件
            ctih.btnClose.Click += new RoutedEventHandler(btnClose_Click);
            //返回Header
            return ctih;
        }

        /// <summary>
        /// 关闭按钮的点击事件处理方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void btnClose_Click(object sender, RoutedEventArgs e)
        {
            // 触发标签项关闭事件
            if (TabItemClosing != null)
            {
                TabItemClosing.Invoke(sender, e);
            }
            //关闭当前TabItem
            ((TabControl)GetParentObject<TabControl>(this)).Items.Remove(this);
        }

        /// 获得指定元素的父元素  
        /// </summary>  
        /// <typeparam name="T">父级元素类型</typeparam>  
        /// <param name="obj">指定查找元素</param>  
        /// <returns></returns>  
        public T GetParentObject<T>(DependencyObject obj) where T : FrameworkElement
        {
            //返回可视对象的父对象
            DependencyObject parent = VisualTreeHelper.GetParent(obj);
            //按层、类型提取父级
            while (parent != null)
            {
                if (parent is T)
                    return (T)parent;
                parent = VisualTreeHelper.GetParent(parent);
            }
            //返回
            return null;
        }
    }
}

测试：

MainWindow.xaml中：

<Window x:Class="CloseableTabItem_Test.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
    <Grid Name="grid">
        <TabControl Name="tabControl_Grid" TabStripPlacement="Top"/>
    </Grid>
</Window>

MainWindow.cs中：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace CloseableTabItem_Test
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Button button = new Button();
            button.Background = Brushes.Aqua;
            button.Content = "+1";
            button.Width = 50;
            button.Height = 20;
            button.HorizontalAlignment = System.Windows.HorizontalAlignment.Right;
            button.VerticalAlignment = System.Windows.VerticalAlignment.Bottom;
            button.Margin = new Thickness(0,0,50,50);
            button.Click += button_Click;
            grid.Children.Add(button);
        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            tabControl_Grid.Items.Add(new CloseableTabItem("名都不给,你得多懒."));
        }        
    }
}

转载请注明出处，谢谢。

http://blog.csdn.net/u011785544/article/details/45307565

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