AIKKEY_WPFWin7/AIK.Views/MenuPages/TirePressure/TirePressurePage.xaml.cs

using AIK.ViewModels.TirePressure;
using CommunityToolkit.Mvvm.DependencyInjection;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace AIK.Views.MenuPages.TirePressure
{
    /// <summary>
    /// TirePressurePage.xaml 的交互逻辑
    /// </summary>
    public partial class TirePressurePage : UserControl
    {
        public TirePressurePage()
        {
            InitializeComponent();
            DataContext=Ioc.Default.GetService<TirePressureViewModel>();
        }
        // 全局单选：记录当前选中项
        private object _lastSelectedItem;

        // 子项点击 = 全局单选
        private void ItemBorder_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            var border = sender as Border;
            if (border == null) return;

            var clickedItem = border.Tag;

            // 1. 取消上一个选中
            if (_lastSelectedItem is INotifyPropertyChanged oldItem)
            {
                var prop = oldItem.GetType().GetProperty("IsSelected");
                prop?.SetValue(oldItem, false);
            }

            // 2. 设置当前选中
            if (clickedItem is INotifyPropertyChanged newItem)
            {
                var prop = newItem.GetType().GetProperty("IsSelected");
                prop?.SetValue(newItem, true);
                _lastSelectedItem = clickedItem;
            }
        }

        // 手风琴效果
        private void Expander_Expanded(object sender, RoutedEventArgs e)
        {
            if (sender is Expander currentExpander)
            {
                var parent = VisualTreeHelper.GetParent(currentExpander);
                while (parent != null && parent is not ListBox)
                    parent = VisualTreeHelper.GetParent(parent);

                if (parent is ListBox listBox)
                {
                    foreach (var item in listBox.Items)
                    {
                        if (listBox.ItemContainerGenerator.ContainerFromItem(item) is ListBoxItem lbi)
                        {
                            foreach (var exp in FindVisualChildren<Expander>(lbi))
                            {
                                if (exp != currentExpander) exp.IsExpanded = false;
                            }
                        }
                    }
                }
            }
        }

        // 滚动穿透
        private void CarListBox_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (!e.Handled)
            {
                e.Handled = true;
                var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
                eventArg.RoutedEvent = MouseWheelEvent;
                eventArg.Source = sender;
                var parent = ((Control)sender).Parent as UIElement;
                parent.RaiseEvent(eventArg);
            }
        }

        // 查找控件
        private static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
        {
            if (depObj == null) yield break;
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
            {
                var child = VisualTreeHelper.GetChild(depObj, i);
                if (child is T t) yield return t;
                foreach (var c in FindVisualChildren<T>(child)) yield return c;
            }
        }
    }
}