如何在不选择视图的情况下将视图添加到PRISM TabControl区域？ [英] How to add view to a PRISM TabControl region WITHOUT making it selected?

问题描述

我们有一个使用PRISM的WPF应用程序，其区域类型为TabControl。

 < TabControl pyramid：RegionManager.RegionName = {x：静态inf：RegionNames.ContentRegion}> 
< TabControl.ItemContainerStyle> 
< Style TargetType = {x：Type TabItem}> 
< Setter Property = Header Value = {Binding TabName} /> 
< / Style> 
< /TabControl.ItemContainerStyle> 
< / TabControl> 
  

我们正在用

<$ p注册视图$ p> _regionManager.RegisterViewWithRegion（RegionNames.ContentRegion，typeof（ContentView））;


问题是，这样可以自动选择已注册的选项卡。有没有一种方法可以将视图添加为选项卡但不能选择它？

解决方案

我想出的解决方案是实现

注意：此接口还允许您指定选项卡顺序（如果有）

 公共接口ITabItemView 
 {
 int TabItemIndex {get; } 
 
 bool IsStartupTab {get; } 
} 
 
公共类TabControlRegionAdapter：RegionAdapterBase< TabControl> 
 {
 private ITabItemView startupTab = null; 
 
 public TabControlRegionAdapter（IRegionBehaviorFactory factory）
：base（factory）
 {
 
} 
 
保护重写void Adapt（ IRegion区域，TabControl regionTarget）
 {
 region.Views.CollectionChanged + =（s，e）=> 
 {
 if（e.Action == NotifyCollectionChangedAction.Add）
 {
 var items = regionTarget.Items; 
 
 foreach（e.NewItems中的ITabItemView选项卡）
 {
 if（tab.TabItemIndex> items.Count）
 items.Add（tab）; 
 else 
个项目。Insert（tab.TabItemIndex，tab）; 
 
 if（tab.IsStartupTab）
 {
 if（tab！= startupTab&& startupTab！= null）
 throw new InvalidOperationException（多个tab是启动标签。）; 
 
 startupTab =选项卡； 
 
 regionTarget.SelectedItem =选项卡； 
} 
} 
} 
}; 
} 
 
受保护的覆盖IRegion CreateRegion（）
 {
 return new AllActiveRegion（）; 
} 
} 
  

当然，在您的Bootstrapper类中，您需要

 受保护的重写Microsoft.Practices.Prism.Regions.RegionAdapterMappings ConfigureRegionAdapterMappings（）
 {
 var mappings = base。 ConfigureRegionAdapterMappings（）; 
 mappings.RegisterMapping（typeof（TabControl），Container.Resolve< TabControlRegionAdapter>（））; 
返回映射； 
} 
  

We have a WPF application using PRISM, with a region of type TabControl.

    <TabControl prism:RegionManager.RegionName="{x:Static inf:RegionNames.ContentRegion}">
        <TabControl.ItemContainerStyle>
            <Style TargetType="{x:Type TabItem}">
                <Setter Property="Header" Value="{Binding TabName}" />
            </Style>
        </TabControl.ItemContainerStyle>
    </TabControl>

And we are registering views with

_regionManager.RegisterViewWithRegion(RegionNames.ContentRegion, typeof(ContentView));

Problem is, this way the registered tab automatically gets selected. Is there a way to add a view as tab but NOT select it??

解决方案

The solution I came up with is to implement an interface for each view, and implement a custom RegionAdapter which uses it.

Note: This interface also allows you to specify tab order, if you need it as well.

public interface ITabItemView
{
    int TabItemIndex { get; }

    bool IsStartupTab { get; }
}

public class TabControlRegionAdapter : RegionAdapterBase<TabControl>
{
    private ITabItemView startupTab = null;

    public TabControlRegionAdapter(IRegionBehaviorFactory factory)
        : base(factory)
    {

    }

    protected override void Adapt(IRegion region, TabControl regionTarget)
    {
        region.Views.CollectionChanged += (s, e) =>
            {
                if (e.Action == NotifyCollectionChangedAction.Add)
                {
                    var items = regionTarget.Items;

                    foreach (ITabItemView tab in e.NewItems)
                    {
                        if (tab.TabItemIndex > items.Count)
                            items.Add(tab);
                        else
                            items.Insert(tab.TabItemIndex, tab);

                        if (tab.IsStartupTab)
                        {
                            if (tab != startupTab && startupTab != null)
                                throw new InvalidOperationException("More than one tab is the startup tab.");

                            startupTab = tab;

                            regionTarget.SelectedItem = tab;
                        }
                    }
                }
            };
    }

    protected override IRegion CreateRegion()
    {
        return new AllActiveRegion();
    }
}

And of course in your Bootstrapper class you need

protected override Microsoft.Practices.Prism.Regions.RegionAdapterMappings ConfigureRegionAdapterMappings()
    {
        var mappings = base.ConfigureRegionAdapterMappings();
        mappings.RegisterMapping(typeof(TabControl), Container.Resolve<TabControlRegionAdapter>());
        return mappings;
    }

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