添加项目文件。

2024-09-22 11:05:41 +08:00
parent fb5d55723a
commit 49ceaae6a8
764 changed files with 78850 additions and 0 deletions
--- a/Wpf.Ui.Extend/UserControls/MultiSelectorHelper.cs
+++ b/Wpf.Ui.Extend/UserControls/MultiSelectorHelper.cs
@@ -0,0 +1,82 @@
+using System;
+using System.Collections;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+
+namespace Wpf.Ui.Extend.UserControls
+{
+    /// <summary>
+    /// 多选控件绑定选中项
+    /// </summary>
+    /// <example>
+    /// <c><DataGrid</c>
+    /// <c>local:MultiSelectorHelper.BindableSelectedItems="{Binding SelectItems, Mode=OneWayToSource}"</c>
+    /// <c>local:MultiSelectorHelper.MonitorSelectionChanged="True" /></c>
+    /// </example>
+    public class MultiSelectorHelper : DependencyObject
+    {
+        public static readonly DependencyProperty BindableSelectedItemsProperty = DependencyProperty.Register(
+            "BindableSelectedItems",
+            typeof(IList),
+            typeof(MultiSelectorHelper),
+            new PropertyMetadata(default(IList))
+        );
+
+        public static IList GetBindableSelectedItems(DependencyObject obj)
+        {
+            return (IList)obj.GetValue(BindableSelectedItemsProperty);
+        }
+
+        public static void SetBindableSelectedItems(DependencyObject obj, IList value)
+        {
+            obj.SetValue(BindableSelectedItemsProperty, value);
+        }
+
+        public static readonly DependencyProperty MonitorSelectionChangedProperty = DependencyProperty.RegisterAttached(
+            "SetMonitorSelectionChanged",
+            typeof(bool),
+            typeof(MultiSelectorHelper),
+            new PropertyMetadata(false, MonitorSelectionChangedPropertyChangedCallBack)
+        );
+
+        private static void MonitorSelectionChangedPropertyChangedCallBack(
+            DependencyObject d,
+            DependencyPropertyChangedEventArgs e
+        )
+        {
+            if (d is not MultiSelector selector)
+            {
+                throw new NotImplementedException();
+            }
+
+            if ((bool)e.NewValue)
+            {
+                selector.SelectionChanged += Selector_SelectionChanged;
+            }
+            else
+            {
+                selector.SelectionChanged -= Selector_SelectionChanged;
+            }
+        }
+
+        private static void Selector_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            if (sender is MultiSelector selector)
+            {
+                SetBindableSelectedItems(selector, selector.SelectedItems);
+                selector.GetBindingExpression(BindableSelectedItemsProperty).UpdateSource();
+            }
+        }
+
+        public static void SetMonitorSelectionChanged(DependencyObject element, bool value)
+        {
+            element.SetValue(MonitorSelectionChangedProperty, value);
+        }
+
+        public static bool GetMonitorSelectionChanged(DependencyObject element)
+        {
+            return (bool)element.GetValue(MonitorSelectionChangedProperty);
+        }
+    }
+}