从DockingManager关闭防止文件 [英] Prevent document from closing in DockingManager

问题描述

下面是一个示例，它使用 DockingManager （又名 AvalonDock ）从扩展WPF工具包

Here's a sample, which uses DockingManager (a.k.a AvalonDock) from Extended WPF Toolkit.

查看模式：

public class Person
{
    public string Name { get; set; }
    public bool CanClose { get; set; }
}

查看：

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:xcad="http://schemas.xceed.com/wpf/xaml/avalondock"
        xmlns:local="clr-namespace:WpfApplication2">
    <Grid>
        <xcad:DockingManager DocumentsSource="{Binding}">
            <xcad:DockingManager.Resources>
                <DataTemplate DataType="{x:Type local:Person}">
                    <StackPanel>
                        <TextBlock Text="Here's person name:"/>
                        <TextBlock Text="{Binding Name}"/>
                    </StackPanel>
                </DataTemplate>
            </xcad:DockingManager.Resources>

            <xcad:DockingManager.DocumentHeaderTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Content.Name}" />
                </DataTemplate>
            </xcad:DockingManager.DocumentHeaderTemplate>

            <xcad:LayoutRoot>
                <xcad:LayoutPanel Orientation="Horizontal">
                    <xcad:LayoutDocumentPane />
                </xcad:LayoutPanel>
            </xcad:LayoutRoot>
        </xcad:DockingManager>
    </Grid>
</Window>

代码隐藏：

Code-behind:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        DataContext = new[]
        {
            new Person { Name = "John" },
            new Person { Name = "Mary", CanClose = true },
            new Person { Name = "Peter", CanClose = true },
            new Person { Name = "Sarah", CanClose = true },
        };
    }
}

我想阻止文件的通过<$ C关闭$ C> CanClose 在我看来模型属性。
我预期的那样，必须有一些风格文件的容器，所以，我会写这样的：

I want to prevent documents from closing via CanClose property in my view model. I've expected, that there must be some style for documents container, so, I'll write something like:

<Setter Property="CanClose" Value="{Binding Content.CanClose}"/>

和一切都将正常工作。不过貌似有一个在 DockingManager 没有这样的风格。

and everything will work. But looks like there's no such style in DockingManager.

我缺少的东西吗？

更新

当然，我可以写一个附加的行为，这会听 DockingManager.DocumentClosing 事件并将其分派到任何视图模式，这将绑定到 DockingManager 。但在我看来很愚蠢......

Of course, I can write an attached behavior, which will listen to DockingManager.DocumentClosing event and dispatch it to any view model, which will be bound to DockingManager. But it seems to me very stupid...

另一种方法是在视图中处理事件：

Another way is to handle event in the view:

    private void DockingManager_DocumentClosing(object sender, Xceed.Wpf.AvalonDock.DocumentClosingEventArgs e)
    {
        e.Cancel = !((Person)e.Document.Content).CanClose;
    }

但它绝对不是一个MVVM路，我喜欢数据绑定。

But it is definitely not a MVVM-way, and I like data binding.

推荐答案

如果你有一个ContentViewModel - 你可以有一个ICommand关闭{获取;集;}属性，并将其绑定到LayoutItem的关闭命令。

If you have a ContentViewModel - you can have an ICommand Close {get;set;} property and bind it to the LayoutItem's close command.

您可以使用DelegateCommand这个你ContentViewModel它可以被用来确定是否可以关闭该文件或不（设置e.Cancel =真应该停止关闭命令）。

You can use a DelegateCommand for this on your ContentViewModel which can be used to determine if you can close the document or not (setting e.Cancel = true should stop the close command).

这篇关于从DockingManager关闭防止文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！