Shell caliburn micro或另一个MVVM框架中有更多活动的屏幕/视图 [英] more active screens / views in shell caliburn micro or another MVVM framework

问题描述

如果我使用caliburn micro，有可能在一个外壳中拥有更多活动屏幕/视图?

It is possible have more active screen / view in one shell if I am using caliburn micro ?

类似这样的代码，用于shell视图-wpf窗口:

Something like this, code for shell view - wpf window:

        <ContentControl x:Name="ActiveItem_1" Grid.Row=1/>

        <ContentControl x:Name="ActiveItem_2" Grid.Row=2/>


        <ContentControl x:Name="ActiveItem_9" Grid.Row=9/>

谢谢您的建议，或者在哪种MVVM中可行?

Thank you for advice, or in which MVVM this possible?

推荐答案

对于AllActive导体，您将在ShellViewModel中继承 Items 集合.调用 ActivateItem(vm)时，视图模型将添加到 Items 集合中；调用 DeactivateItem(vm，close:true)时，视图模型将被删除.然后，在ShellView.xaml中，您可以将 Items (视图模型的集合)绑定到 ItemsControl .

In case of AllActive conductor you will have inherited Items collection in your ShellViewModel. When calling ActivateItem(vm) View Model will be added into Items collection and when calling DeactivateItem(vm, close: true) - removed. Then in ShellView.xaml you can bind Items (collection of View Models) to ItemsControl.

MyView.xaml

<UserControl x:Class="AllActive_Test.MyView"
             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" 
             d:DesignHeight="300" d:DesignWidth="300">
  <Grid>
    <TextBlock Text="{Binding Path=MyProperty}"/>
  </Grid>
</UserControl>

MyViewModel.cs

class MyViewModel : Screen
{
    private int myVar;

    public int MyProperty
    {
        get
        {
            return myVar;
        }
        set
        {
            myVar = value;
            this.NotifyOfPropertyChange(() => MyProperty);
        }
    }
}

ShellView.xaml

<Window x:Class="AllActive_Test.ShellView"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:cal="http://www.caliburnproject.org"
        Width="300" Height="300">

    <Grid Background="White">
    <ItemsControl ItemsSource="{Binding Path=Items}">
      <ItemsControl.ItemTemplate>
        <DataTemplate>
          <ContentControl cal:View.Model="{Binding}"/>
        </DataTemplate>
      </ItemsControl.ItemTemplate>
    </ItemsControl>
    </Grid>
</Window>

ShellViewModel.cs

public class ShellViewModel : Conductor<Screen>.Collection.AllActive, IShell
{
    public ShellViewModel()
    {
        for (int i = 0; i < 3; i++)
        {
            MyViewModel vm = new MyViewModel();
            vm.MyProperty = i;
            ActivateItem(vm);
        }
    }
}

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