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enhance: add IsTristateSortingEnabled for DataGridAttach.

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This commit is contained in:
NaBian 2024-03-17 22:14:49 +08:00
parent 454434e211
commit f6c7d7a72b
1 changed files with 59 additions and 0 deletions
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59
src/Shared/HandyControl_Shared/Controls/Attach/DataGridAttach.cs
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@ -1,4 +1,5 @@
using System.Collections.Specialized;
using System.ComponentModel;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
@ -342,4 +343,62 @@ public class DataGridAttach
public static bool GetShowSelectAllButton(DependencyObject element)
=> (bool) element.GetValue(ShowSelectAllButtonProperty);
public static readonly DependencyProperty IsTristateSortingEnabledProperty = DependencyProperty.RegisterAttached(
"IsTristateSortingEnabled", typeof(bool), typeof(DataGridAttach), new PropertyMetadata(
ValueBoxes.FalseBox, OnIsTristateSortingEnabledChanged));
private static void OnIsTristateSortingEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is not DataGrid dataGrid)
{
return;
}
if ((bool) e.NewValue)
{
dataGrid.Sorting += DataGridOnSorting;
}
else
{
dataGrid.Sorting -= DataGridOnSorting;
}
}
private static void DataGridOnSorting(object sender, DataGridSortingEventArgs e)
{
if (sender is not DataGrid dataGrid ||
string.IsNullOrEmpty(e.Column.SortMemberPath) ||
e.Column.SortDirection is not ListSortDirection.Descending)
{
return;
}
var description = dataGrid.Items
.SortDescriptions
.FirstOrDefault(item => string.Equals(item.PropertyName, e.Column.SortMemberPath));
var index = dataGrid.Items.SortDescriptions.IndexOf(description);
if (index == -1)
{
return;
}
e.Column.SortDirection = null;
dataGrid.Items.SortDescriptions.RemoveAt(index);
dataGrid.Items.Refresh();
if ((Keyboard.Modifiers & ModifierKeys.Shift) != ModifierKeys.Shift)
{
dataGrid.Items.SortDescriptions.Clear();
dataGrid.Items.Refresh();
}
e.Handled = true;
}
public static void SetIsTristateSortingEnabled(DependencyObject element, bool value)
=> element.SetValue(IsTristateSortingEnabledProperty, ValueBoxes.BooleanBox(value));
public static bool GetIsTristateSortingEnabled(DependencyObject element)
=> (bool) element.GetValue(IsTristateSortingEnabledProperty);
}