加载并保存锚点的布局-可见性的绑定

本文关键字：布局 可见性 绑定 保存 加载 | 更新日期: 2023-09-27 18:02:31

我面临的问题是，我无法打开类型的锚定X后，我已经加载了我的旧布局。只有当我在保存布局之前关闭类型X的锚定时，才会发生这种情况。

有没有人有类似的问题与AvalonDock?这是AvalonDock的bug吗?经过多年的调试，我担心在ViewModel中更改IsActive时，绑定<Setter Property="IsActive" Value="{Binding Model.IsActive, Mode=TwoWay}"/>在视图中没有得到正确的更新。AvalonDock应该负责这项任务。但也许问题是加载和保存布局?

<标题> <

视图/strong>

我正在加载保存的布局我的锚定(=工具窗口)在Loaded事件我的DockingManager在我的视图如下(简化):

string savedLayout = Properties.Settings.Default.Layout;
XmlDocument doc = new XmlDocument();
doc.LoadXml(savedLayout);
// very simplified code. load saved xml layout and add anchorables to the dockmanager
doc.SelectNodes("//LayoutAnchorable").OfType<XmlNode>().ToList().ForEach(anchorable =>
{
    this.DockManager.AnchorablesSource.Add(anchorable);
});

我在我的视图中保存MainWindow的Closing事件中锚定的当前布局，如下所示(简化):

XmlDocument doc = new XmlDocument();
XmlLayoutSerializer xmlLayoutSerializer = new XmlLayoutSerializer(this.DockManager);
using (MemoryStream stream = new MemoryStream())
{
    xmlLayoutSerializer.Serialize(stream);
    stream.Seek(0, SeekOrigin.Begin);
    doc.Load(stream);
}
// here happens some magic. i think this code is not responsible for my problem
Properties.Settings.Default.Layout = doc.OuterXml;

ViewModel在XAML中像这样绑定到ViewModel(简化):

<xcad:DockingManager x:Name="DockManager" AnchorablesSource="{Binding Tools}" Loaded="DockManager_Loaded">
    <xcad:DockingManager.LayoutItemContainerStyle>
        <Style TargetType="{x:Type dockctrl:LayoutItem}">
            <Setter Property="Title" Value="{Binding Model.ContentId}" />
            <Setter Property="IsSelected" Value="{Binding Model.IsSelected, Mode=TwoWay}" />
            <Setter Property="CanClose" Value="{Binding Model.CanClose, Mode=TwoWay}" />
            <Setter Property="Visibility" Value="{Binding Model.IsVisible, Mode=TwoWay, Converter={StaticResource Bool2vis}, ConverterParameter={x:Static Visibility.Hidden}}"/>
            <Setter Property="CloseCommand" Value="{Binding Model.CloseCommand}" />
            <Setter Property="IconSource" Value="{Binding Model.IconSource}" />
            <Setter Property="IsActive" Value="{Binding Model.IsActive, Mode=TwoWay}"/>
            <Setter Property="ContentId" Value="{Binding Model.ContentId}" />
        </Style>
    </xcad:DockingManager.LayoutItemContainerStyle>
[...]

ViewModel

锚定在主窗口的ViewModel中打开。下面是消息的示例代码:

public ObservableCollection<ToolBoxViewModelBase> Tools { get; } = new ObservableCollection<ToolBoxViewModelBase>();
public MainWindowViewModel()
{
    // [...]
    this.MessagesWindow = new MessagesWindowViewModel();
    SimpleIoc.Default.Register<MessagesWindowViewModel>(() => this.MessagesWindow);
    this.ShowMessagesWindowCommand = new RelayCommand(() => this.OpenToolBox(this.MessagesWindow));
    // [...]
}
public void OpenToolBox<T>(T viewModel) where T : ToolBoxViewModelBase
{
    // [...]
    viewModel.IsVisible = true;
    viewModel.IsActive = true;
    // [...]
}

只是让我知道，如果你需要更多的信息，或者我错过了添加一些代码!

加载并保存锚点的布局-可见性的绑定

也许我误解了你的问题，但是…IsActive属性不用于打开保存到布局中的工具。该属性用于将工具设置为活动(聚焦)状态。为了打开保存到布局中的工具，您应该处理附件中的layoutSerializer_LayoutSerializationCallback像这样:

var layoutSerializer = new XmlLayoutSerializer(this.DockManager);
layoutSerializer.LayoutSerializationCallback += layoutSerializer_LayoutSerializationCallback;
protected virtual void layoutSerializer_LayoutSerializationCallback(object sender, LayoutSerializationCallbackEventArgs e)
    {
        try
        {
            var model = this.Docs.Union(this.Tools).FirstOrDefault(vm => vm.ContentId == e.Model.ContentId);
            if (model != null)
            {
                e.Content = model;
            }
            else
            {
                // Log load layout error info                    
            }
        }
        catch (Exception ex)
        {
            // Log load layout error info    
        }
    }
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