Prism InteractionRequest + MahApps.Metro

Question

我想用WPF Prism + MahApps.Metro创建一个弹出窗口或对话框,确认选择(OK,Cancel)

我创建了自定义交互:

<i:Interaction.Triggers>
    <interactionRequest:InteractionRequestTrigger SourceObject="{Binding DeleteConfirmationRequest, Mode=OneWay}">
        <interactionRequest:PopupWindowAction>
            <interactionRequest:PopupWindowAction.WindowContent>
                <confirmation:ConfirmationDialog/>
            </interactionRequest:PopupWindowAction.WindowContent>
        </interactionRequest:PopupWindowAction>
    </interactionRequest:InteractionRequestTrigger>
</i:Interaction.Triggers>

但这将创建一个默认的WPF窗口,它不是城域风格的.如何将其更改为MahApps.Metro窗口？

也许,另一种方法是使用MahApps.Metro Dialogs,但我不知道如何将它与Prism一起使用.

有任何想法吗？

Answer 1

您必须做两件事,创建新的MetroWindow对话框,然后重写PopupWindowAction以使用它们.这听起来很长,但只需要10分钟:

首先,创建自己的确认和通知窗口,继承自MetroWindow,就像任何其他MetroWindow一样.您可以从棱镜源复制原始的确认和通知窗口,并根据mahapps快速启动的建议进行更改.因此确认窗口将是这样的:

<Controls:MetroWindow x:Class="MyApp.DefaultPopupWindows.DefaultConfirmationWindow"
           xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
           xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
           xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
           MinWidth="300" MinHeight="150"
           Title="{Binding Title}" 
           BorderBrush="{DynamicResource AccentColorBrush}"                      
           BorderThickness="1">

    <Grid x:Name="LayoutRoot" Margin="5">
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <ContentControl HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="0" Content="{Binding Content}"/>

        <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Right">
            <Button x:Name="OkButton" Content="OK" Width="75" Height="25" HorizontalAlignment="Right" Margin="0,10,0,0" Click="OkButton_Click" />
            <Button x:Name="CancelButton" Content="Cancel" Width="75" Height="25" HorizontalAlignment="Right" Margin="20,10,0,0" Click="CancelButton_Click" />
        </StackPanel>

    </Grid>
</Controls:MetroWindow>

以及相关代码背后:

using MahApps.Metro.Controls;
using Microsoft.Practices.Prism.Interactivity.InteractionRequest;
using System.Windows;

namespace MyApp.DefaultPopupWindows
{
    /// <summary>
    /// Interaction logic for ConfirmationChildWindow.xaml
    /// </summary>
    public partial class DefaultConfirmationWindow : MetroWindow
    {
        /// <summary>
        /// Creates a new instance of ConfirmationChildWindow.
        /// </summary>
        public DefaultConfirmationWindow()
        {
            InitializeComponent();
        }

        /// <summary>
        /// Sets or gets the <see cref="IConfirmation"/> shown by this window./>
        /// </summary>
        public IConfirmation Confirmation
        {
            get
            {
                return this.DataContext as IConfirmation;
            }
            set
            {
                this.DataContext = value;
            }
        }

        private void OkButton_Click(object sender, RoutedEventArgs e)
        {
            this.Confirmation.Confirmed = true;
            this.Close();
        }

        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            this.Confirmation.Confirmed = false;
            this.Close();
        }
    }
}

接下来,您将创建自己的PopupWindowAction,扩展棱镜中的一个.在该类中,您将覆盖GetWindow函数:

protected override Window GetWindow(INotification notification)
{
    MetroWindow wrapperWindow;

    if (this.WindowContent != null)
    {
        wrapperWindow = new MetroWindow();

        // If the WindowContent does not have its own DataContext, it will inherit this one.
        wrapperWindow.DataContext = notification;
        wrapperWindow.Title = notification.Title;

        this.PrepareContentForWindow(notification, wrapperWindow);
    }
    else
    {
        wrapperWindow = this.CreateDefaultWindow(notification);
    }

    return wrapperWindow;
}

您还必须为"CreateDefaultWindow"提供自己的实现,它将创建适当窗口的新MetroWindow版本:

protected new MetroWindow CreateDefaultWindow(INotification notification)
{
    MetroWindow window = null;

    if (notification is IConfirmation)
    {
        window = new DefaultPopupWindows.DefaultConfirmationWindow() { Confirmation = (IConfirmation)notification };
    }
    else
    {
        window = new DefaultPopupWindows.DefaultNotificationWindow() { Notification = notification };
    }

    return window;
}

最后,在您自己的视图/窗口中的InteractionRequest中,指定这个新的PopupWindowAction,而不是prism版本.