Merge pull request #770 from dotnet-campus/t/lindexi/GridExtensions

加上给 Grid 行列命名绑定的辅助方法
HandyOrg · Jun 21, 2021 · 0848d2b · 0848d2b
2 parents 667d0d5 + 16c3399
commit 0848d2b
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diff --git a/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems b/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
@@ -143,6 +143,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\ThicknessSplitConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\DependencyObjectExtension.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\FrameworkElementExtension.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\GridExtension.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\LangExtension.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\StringExtension.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Extension\ValueExtension.cs" />

diff --git a/src/Shared/HandyControl_Shared/Tools/Extension/GridExtension.cs b/src/Shared/HandyControl_Shared/Tools/Extension/GridExtension.cs
@@ -0,0 +1,108 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace HandyControl.Tools.Extension
+{
+    public class GridExtensions
+    {
+        public static readonly DependencyProperty NameProperty = DependencyProperty.RegisterAttached(
+            "Name", typeof(string), typeof(GridExtensions), new PropertyMetadata(default(string)));
+
+        public static void SetName(DependencyObject element, string value)
+        {
+            element.SetValue(NameProperty, value);
+        }
+
+        public static string GetName(DependencyObject element)
+        {
+            return (string) element.GetValue(NameProperty);
+        }
+
+        public static readonly DependencyProperty RowNameProperty = DependencyProperty.RegisterAttached(
+            "RowName", typeof(string), typeof(GridExtensions),
+            new PropertyMetadata(default(string), RowName_PropertyChanged));
+
+        private static void RowName_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            if (d is FrameworkElement frameworkElement)
+            {
+                if (e.NewValue is string rowName)
+                {
+                    if (string.IsNullOrEmpty(rowName))
+                    {
+                        return;
+                    }
+
+                    if (frameworkElement.Parent is Grid grid)
+                    {
+                        for (var i = 0; i < grid.RowDefinitions.Count; i++)
+                        {
+                            var gridRowDefinition = grid.RowDefinitions[i];
+                            var gridRowName = GetName(gridRowDefinition);
+                            if (!string.IsNullOrEmpty(gridRowName) &&
+                                gridRowName.Equals(rowName, StringComparison.Ordinal))
+                            {
+                                Grid.SetRow(frameworkElement, i);
+                                return;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        public static void SetRowName(DependencyObject element, string value)
+        {
+            element.SetValue(RowNameProperty, value);
+        }
+
+        public static string GetRowName(DependencyObject element)
+        {
+            return (string) element.GetValue(RowNameProperty);
+        }
+
+        public static readonly DependencyProperty ColumnNameProperty = DependencyProperty.RegisterAttached(
+            "ColumnName", typeof(string), typeof(GridExtensions),
+            new PropertyMetadata(default(string), ColumnName_PropertyChanged));
+
+        private static void ColumnName_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            if (d is FrameworkElement frameworkElement)
+            {
+                if (e.NewValue is string columnName)
+                {
+                    if (string.IsNullOrEmpty(columnName))
+                    {
+                        return;
+                    }
+
+                    if (frameworkElement.Parent is Grid grid)
+                    {
+                        for (var i = 0; i < grid.ColumnDefinitions.Count; i++)
+                        {
+                            var gridColumnDefinition = grid.ColumnDefinitions[i];
+                            var gridColumnName = GetName(gridColumnDefinition);
+                            if (!string.IsNullOrEmpty(gridColumnName) &&
+                                gridColumnName.Equals(columnName, StringComparison.Ordinal))
+                            {
+                                Grid.SetColumn(frameworkElement, i);
+                                return;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        public static void SetColumnName(DependencyObject element, string value)
+        {
+            element.SetValue(ColumnNameProperty, value);
+        }
+
+        public static string GetColumnName(DependencyObject element)
+        {
+            return (string) element.GetValue(ColumnNameProperty);
+        }
+    }
+}