serein-flow/Workbench/ViewModels/CanvasNodeTreeViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using Serein.Library;
using Serein.Workbench.Services;
using Serein.Workbench.Views;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Serein.Workbench.ViewModels
{
    internal partial class CanvasInfoViewModel : ObservableObject
    {
        private readonly FlowNodeService flowNodeService;

        /// <summary>
        /// 画布数据实体
        /// </summary>
        [ObservableProperty]
        private FlowCanvasDetails _model;

        public CanvasInfoViewModel(FlowNodeService flowNodeService)
        {
            this.flowNodeService = flowNodeService;
            this.flowNodeService.OnViewCanvasChanged += OnViewCanvasChanged;
        }

        /// <summary>
        /// 查看的画布发生改变
        /// </summary>
        /// <param name="flowCanvas"></param>
        private void OnViewCanvasChanged(FlowCanvasView flowCanvas)
        {
            if (flowCanvas.DataContext is FlowCanvasViewModel vm) 
            {
                Model = vm.Model;
            }
        }
    }
}