90 lines
2.2 KiB
C#
90 lines
2.2 KiB
C#
using System;
|
|
using System.Windows;
|
|
using System.Windows.Controls;
|
|
using GalaSoft.MvvmLight;
|
|
using GalaSoft.MvvmLight.CommandWpf;
|
|
using GalaSoft.MvvmLight.Messaging;
|
|
using HandyControlDemo.Data;
|
|
using HandyControlDemo.Tools;
|
|
|
|
namespace HandyControlDemo.ViewModel
|
|
{
|
|
public class MainViewModel : ViewModelBase
|
|
{
|
|
#region 字段
|
|
|
|
/// <summary>
|
|
/// 内容标题
|
|
/// </summary>
|
|
private object _contentTitle;
|
|
|
|
/// <summary>
|
|
/// 子内容
|
|
/// </summary>
|
|
private object _subContent;
|
|
|
|
#endregion
|
|
|
|
public MainViewModel()
|
|
{
|
|
Messenger.Default.Register<object>(this, MessageToken.LoadShowContent, obj => SubContent = obj);
|
|
}
|
|
|
|
#region 属性
|
|
|
|
/// <summary>
|
|
/// 子内容
|
|
/// </summary>
|
|
public object SubContent
|
|
{
|
|
get => _subContent;
|
|
set => Set(ref _subContent, value);
|
|
}
|
|
|
|
/// <summary>
|
|
/// 内容标题
|
|
/// </summary>
|
|
public object ContentTitle
|
|
{
|
|
get => _contentTitle;
|
|
set => Set(ref _contentTitle, value);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region 命令
|
|
|
|
/// <summary>
|
|
/// 切换例子命令
|
|
/// </summary>
|
|
public RelayCommand<RoutedPropertyChangedEventArgs<object>> SwitchDemoCmd =>
|
|
new Lazy<RelayCommand<RoutedPropertyChangedEventArgs<object>>>(() =>
|
|
new RelayCommand<RoutedPropertyChangedEventArgs<object>>(SwitchDemo)).Value;
|
|
|
|
#endregion
|
|
|
|
#region 方法
|
|
|
|
/// <summary>
|
|
/// 切换例子
|
|
/// </summary>
|
|
private void SwitchDemo(RoutedPropertyChangedEventArgs<object> e)
|
|
{
|
|
if (e.NewValue is TreeViewItem item)
|
|
{
|
|
if (item.Tag is string tag)
|
|
{
|
|
ContentTitle = item.Header;
|
|
Messenger.Default.Send(AssemblyHelper.CreateInternalInstance($"UserControl.{tag}"), MessageToken.LoadShowContent);
|
|
}
|
|
else
|
|
{
|
|
ContentTitle = null;
|
|
SubContent = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
} |