71 lines
2.6 KiB
C#
71 lines
2.6 KiB
C#
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using System;
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using System.Collections;
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using System.Linq;
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using System.Windows;
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using System.Windows.Controls.Primitives;
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namespace Szmedi.RvKits.AttachProps
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{
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class BindingSelectItems
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{
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public static IList GetSelectItemsAttach(DependencyObject obj)
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{
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return (IList)obj.GetValue(SelectItemsAttachProperty);
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}
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public static void SetSelectItemsAttach(DependencyObject obj, IList value)
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{
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obj.SetValue(SelectItemsAttachProperty, value);
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}
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// Using a DependencyProperty as the backing store for SelectItemsAttach. This enables animation, styling, binding, etc...
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public static readonly DependencyProperty SelectItemsAttachProperty =
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DependencyProperty.RegisterAttached("SelectItemsAttach", typeof(IList), typeof(BindingSelectItems), new PropertyMetadata(null));
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public static bool GetSelectedChange(DependencyObject obj)
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{
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return (bool)obj.GetValue(SelectedChangeProperty);
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}
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public static void SetSelectedChange(DependencyObject obj, bool value)
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{
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obj.SetValue(SelectedChangeProperty, value);
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}
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// Using a DependencyProperty as the backing store for SelectedChange. This enables animation, styling, binding, etc...
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public static readonly DependencyProperty SelectedChangeProperty =
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DependencyProperty.RegisterAttached("SelectedChange", typeof(bool), typeof(BindingSelectItems), new PropertyMetadata(false, SelectedChangedCallBack));
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private static void SelectedChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is MultiSelector)
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{
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MultiSelector multiSelector = (MultiSelector)d;
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if ((bool)e.NewValue)
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{
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multiSelector.SelectionChanged += MultiSelector_SelectionChanged;
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}
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else
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{
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multiSelector.SelectionChanged -= MultiSelector_SelectionChanged;
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}
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}
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else
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{
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throw new InvalidOperationException();
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}
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}
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private static void MultiSelector_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
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{
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MultiSelector multiSelector = (MultiSelector)sender;
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SetSelectItemsAttach(multiSelector, multiSelector.SelectedItems);
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System.Windows.Data.BindingExpression bind = multiSelector.GetBindingExpression(SelectItemsAttachProperty);
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bind?.UpdateSource();
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}
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}
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}
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