如果源绑定适用,如何访问快速访问工具栏命令"添加到快速访问工具"

Question

如果我有绑定的集合,如何添加快速访问项容器默认为RibbonLibrary.它的抛出操作在ItemSource正在使用时无效,而我是从UI添加快速访问工具项.

<r:Ribbon Name="ribbon">

        <r:Ribbon.QuickAccessToolBar>

            <r:RibbonQuickAccessToolBar ItemsSource ="{Binding QuickMenuItems, Mode=OneWay}">
                <r:RibbonQuickAccessToolBar.ItemTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <r:RibbonButton QuickAccessToolBarId="{Binding RibbonId}" Label="{Binding Label}" SmallImageSource="{Binding ImageUri}" Command="{Binding Command}"/>
                        </StackPanel>
                    </DataTemplate>
                </r:RibbonQuickAccessToolBar.ItemTemplate>
            </r:RibbonQuickAccessToolBar>

        </r:Ribbon.QuickAccessToolBar>

        <r:RibbonTab Header="Home">
            <r:RibbonGroup x:Name="Clipboard" ItemsSource ="{Binding MenuItems, Mode=OneWay}" >

                <r:RibbonGroup.ItemTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <r:RibbonButton QuickAccessToolBarId="{Binding RibbonId}" Label="{Binding Label}" SmallImageSource="{Binding ImageUri}" Command="{Binding Command}"/>
                        </StackPanel>
                    </DataTemplate>
                </r:RibbonGroup.ItemTemplate>

            </r:RibbonGroup>
        </r:RibbonTab>

    </r:Ribbon>


 ObservableCollection<RibbonItem> _MenuItems;
 ObservableCollection<RibbonItem> _QuickMenuItems;

 public ObservableCollection<RibbonItem> MenuItems
 {
      get { return _MenuItems; }
 }
 public ObservableCollection<RibbonItem> QuickMenuItems
 {
      get { return _QuickMenuItems; }
 }
public class RibbonItem
{
    public RibbonItem(string label, string imageUri, ICommand command, string ribbonId)
    {
        Label = label;
        ImageUri = imageUri;
        Command = command;
    }

    public string Label { get; private set; }

    public string ImageUri { get; private set; }

    public ICommand Command { get; private set; }

    public string RibbonId { get; private set; }
}

错误的同时

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Answer 1

这将允许您从功能区控件和 ViewModel 添加快速菜单项。我使用 aListBox作为 ViewModel 和RibbonQuickAccessToolBar. 当项目添加到 时ListBox，视图会将它们添加到RibbonQuickAccessToolBar。

创建一个折叠的ListBox，它将绑定到 ViewModel 中的集合并删除ItemsSource的绑定RibbonQuickAccessToolBar：

<ListBox ItemsSource="{Binding QuickMenuItems, Mode=OneWay}"
            x:Name="ProxyListBox"
            Visibility="Collapsed"/>
<ribbon:Ribbon Name="ribbon">
    <ribbon:Ribbon.QuickAccessToolBar>
        <ribbon:RibbonQuickAccessToolBar x:Name="QuickAccessToolBar" DataContextChanged="QuickAccessToolBar_OnDataContextChanged">
            <ribbon:RibbonQuickAccessToolBar.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <ribbon:RibbonButton QuickAccessToolBarId="{Binding RibbonId}" Label="{Binding Label}" SmallImageSource="{Binding ImageUri}" Command="{Binding Command}"/>
                    </StackPanel>
                </DataTemplate>
            </ribbon:RibbonQuickAccessToolBar.ItemTemplate>
        </ribbon:RibbonQuickAccessToolBar>
    </ribbon:Ribbon.QuickAccessToolBar>
    <ribbon:RibbonTab Header="Home">
        <ribbon:RibbonGroup x:Name="Clipboard" ItemsSource ="{Binding MenuItems, Mode=OneWay}" >
            <ribbon:RibbonGroup.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <ribbon:RibbonButton QuickAccessToolBarId="{Binding RibbonId}" Label="{Binding Label}" SmallImageSource="{Binding ImageUri}" Command="{Binding Command}"/>
                    </StackPanel>
                </DataTemplate>
            </ribbon:RibbonGroup.ItemTemplate>
        </ribbon:RibbonGroup>
    </ribbon:RibbonTab>
</ribbon:Ribbon>

在代码隐藏中，使用 ListBox 的 DataContextChanged 为 ListBox.ItemsSource 的 CollectionChanged 事件附加事件处理程序：

private void ProxyListBox_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
    if (e.NewItems != null)
    {
        foreach (var newItem in e.NewItems)
        {
            QuickAccessToolBar.Items.Add(newItem);
        }
    }

    if (e.OldItems != null)
    {
        foreach (var oldItem in e.OldItems)
        {
            QuickAccessToolBar.Items.Remove(oldItem);
        }
    }
}

private void QuickAccessToolBar_OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
    ((INotifyCollectionChanged)ProxyListBox.Items).CollectionChanged += ProxyListBox_CollectionChanged;
}

ViewModel 与之前相同：

class RibbonViewModel
{
    ObservableCollection<RibbonItem> _MenuItems;

    ObservableCollection<RibbonItem> _QuickMenuItems;

    public ObservableCollection<RibbonItem> MenuItems
    {
        get { return _MenuItems; }
    }

    public ObservableCollection<RibbonItem> QuickMenuItems
    {
        get { return _QuickMenuItems; }
    }

    public RibbonViewModel()
    {
        _QuickMenuItems = new ObservableCollection<RibbonItem>();
        _MenuItems = new ObservableCollection<RibbonItem>();
    }

    public class RibbonItem
    {
        public RibbonItem(string label, string imageUri, ICommand command)
        {
            Label = label;
            ImageUri = imageUri;
            Command = command;
        }

        public string Label { get; private set; }

        public string ImageUri { get; private set; }

        public ICommand Command { get; private set; }

        public string RibbonId { get; private set; }
    }
}