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https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-03 00:00:49 +08:00
330 lines
11 KiB
C#
330 lines
11 KiB
C#
using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Media;
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using Avalonia.VisualTree;
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using Newtonsoft.Json;
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using Serein.Library;
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using Serein.Library.Api;
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using Serein.Library.Utils;
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using Serein.NodeFlow;
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using Serein.Workbench.Avalonia.Api;
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using Serein.Workbench.Avalonia.Custom.Node.ViewModels;
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using Serein.Workbench.Avalonia.Custom.Node.Views;
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using Serein.Workbench.Avalonia.Custom.Views;
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using Serein.Workbench.Avalonia.Extension;
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using Serein.Workbench.Avalonia.Model;
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Serein.Workbench.Avalonia.Api
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{
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/// <summary>
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/// 提供节点操作的接口
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/// </summary>
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internal interface INodeOperationService
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{
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/// <summary>
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/// 连接数据
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/// </summary>
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ConnectingData ConnectingData { get; }
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/// <summary>
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/// 主画布
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/// </summary>
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Canvas MainCanvas { get; set; }
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/// <summary>
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/// 节点创建事件
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/// </summary>
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event NodeViewCreateHandle OnNodeViewCreate;
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/// <summary>
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/// 创建节点控件
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/// </summary>
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/// <param name="nodeType">控件类型</param>
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/// <param name="position">创建坐标</param>
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/// <param name="methodDetailsInfo">节点方法信息</param>
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public void CreateNodeView(MethodDetailsInfo methodDetailsInfo, PositionOfUI position);
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/// <summary>
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/// 尝试从连接控制点创建连接
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/// </summary>
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/// <param name="startJunction"></param>
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void TryCreateConnectionOnJunction(NodeJunctionView startJunction);
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}
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#region 事件与事件参数
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/// <summary>
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/// 创建节点控件事件
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/// </summary>
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/// <param name="eventArgs"></param>
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internal delegate bool NodeViewCreateHandle(NodeViewCreateEventArgs eventArgs);
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/// <summary>
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/// 创建节点控件事件参数
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/// </summary>
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internal class NodeViewCreateEventArgs : EventArgs
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{
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internal NodeViewCreateEventArgs(INodeControl nodeControl, PositionOfUI position)
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{
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this.NodeControl = nodeControl;
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this.Position = position;
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}
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public INodeControl NodeControl { get; private set; }
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public PositionOfUI Position { get; private set; }
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}
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#endregion
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}
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namespace Serein.Workbench.Avalonia.Services
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{
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/// <summary>
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/// 节点操作相关服务
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/// </summary>
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internal class NodeOperationService : INodeOperationService
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{
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public NodeOperationService(IFlowEnvironment flowEnvironment,
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IFlowEEForwardingService feefService)
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{
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this.flowEnvironment = flowEnvironment;
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this.feefService = feefService;
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NodeMVVMManagement.RegisterUI(NodeControlType.Action, typeof(ActionNodeView), typeof(ActionNodeViewModel)); // 注册动作节点
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ConnectingData = new ConnectingData();
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feefService.OnNodeCreate += FeefService_OnNodeCreate; // 订阅运行环境创建节点事件
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// 手动加载项目
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_ = Task.Run(async delegate
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{
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await Task.Delay(1000);
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var flowEnvironment = App.GetService<IFlowEnvironment>();
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var filePath = @"C:\Users\Az\source\repos\CLBanyunqiState\CLBanyunqiState\bin\debug\net8.0\project.dnf";
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string content = System.IO.File.ReadAllText(filePath); // 读取整个文件内容
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var projectData = JsonConvert.DeserializeObject<SereinProjectData>(content);
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var projectDfilePath = System.IO.Path.GetDirectoryName(filePath)!;
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flowEnvironment.LoadProject(new FlowEnvInfo { Project = projectData }, projectDfilePath);
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}, CancellationToken.None);
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}
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public ConnectingData ConnectingData { get; private set; }
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public Canvas MainCanvas { get; set; }
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#region 私有变量
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/// <summary>
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/// 存储所有与节点有关的控件
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/// </summary>
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private Dictionary<string, INodeControl> NodeControls { get; } = [];
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/// <summary>
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/// 流程运行环境
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/// </summary>
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private readonly IFlowEnvironment flowEnvironment;
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/// <summary>
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/// 流程运行环境事件转发
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/// </summary>
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private readonly IFlowEEForwardingService feefService;
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#endregion
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/// <summary>
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/// 创建了节点控件
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/// </summary>
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public event NodeViewCreateHandle OnNodeViewCreate;
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/// <summary>
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/// 创建节点控件
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/// </summary>
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/// <param name="nodeType">控件类型</param>
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/// <param name="position">创建坐标</param>
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/// <param name="methodDetailsInfo">节点方法信息（基础节点传null）</param>
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public void CreateNodeView(MethodDetailsInfo methodDetailsInfo, PositionOfUI position)
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{
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Task.Run(async () =>
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{
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if (EnumHelper.TryConvertEnum<NodeControlType>(methodDetailsInfo.NodeType, out var nodeType))
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{
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await flowEnvironment.CreateNodeAsync(nodeType, position, methodDetailsInfo);
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}
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});
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}
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/// <summary>
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/// 从工作台事件转发器监听节点创建事件
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/// </summary>
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/// <param name="eventArgs"></param>
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private void FeefService_OnNodeCreate(NodeCreateEventArgs eventArgs)
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{
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var nodeModel = eventArgs.NodeModel;
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if (NodeControls.ContainsKey(nodeModel.Guid))
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{
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SereinEnv.WriteLine(InfoType.WARN, $"OnNodeCreate 事件意外触发，节点Guid重复 - {nodeModel.Guid}");
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return;
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}
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if (!NodeMVVMManagement.TryGetType(nodeModel.ControlType, out var nodeMVVM))
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{
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SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，节点类型尚未注册。");
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return;
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}
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if (nodeMVVM.ControlType == null
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|| nodeMVVM.ViewModelType == null)
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{
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SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，UI类型尚未注册（请通过 NodeMVVMManagement.RegisterUI() 方法进行注册）。");
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return;
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}
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var isSuccessful = TryCreateNodeView(nodeMVVM.ControlType, // 控件UI类型
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nodeMVVM.ViewModelType, // 控件VIewModel类型
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nodeModel, // 控件数据实体
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out var nodeControl); // 成功创建后传出的节点控件实体
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if (!isSuccessful || nodeControl is null)
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{
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SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，节点创建失败。");
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return;
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}
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var e = new NodeViewCreateEventArgs(nodeControl, eventArgs.Position);
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if (OnNodeViewCreate?.Invoke(e) == true)
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{
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// 成功创建
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NodeControls.TryAdd(nodeModel.Guid, nodeControl); // 缓存起来，通知其它地方拿取这个控件
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}
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}
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/// <summary>
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/// 创建节点控件
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/// </summary>
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/// <param name="viewType">节点控件视图控件类型</param>
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/// <param name="viewModelType">节点控件ViewModel类型</param>
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/// <param name="nodeModel">节点Model实例</param>
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/// <param name="nodeView">返回的节点对象</param>
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/// <returns>是否创建成功</returns>
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/// <exception cref="Exception">无法创建节点控件</exception>
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private bool TryCreateNodeView(Type viewType, Type viewModelType, NodeModelBase nodeModel, out INodeControl? nodeView)
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{
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if (string.IsNullOrEmpty(nodeModel.Guid))
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{
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nodeModel.Guid = Guid.NewGuid().ToString();
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}
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var t_ViewModel = Activator.CreateInstance(viewModelType);
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if (t_ViewModel is not NodeViewModelBase viewModelBase)
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{
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nodeView = null;
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return false;
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}
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viewModelBase.NodeModelBase = nodeModel; // 设置节点对象
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var controlObj = Activator.CreateInstance(viewType);
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if (controlObj is not INodeControl nodeControl)
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{
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nodeView = null;
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return false;
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}
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else
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{
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nodeControl.SetNodeModel(nodeModel);
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nodeView = nodeControl;
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return true;
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}
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// 在其它地方验证过了，所以注释
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//if ((viewType is null)
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// || viewModelType is null
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// || nodeModel is null)
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//{
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// nodeView = null;
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// return false;
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//}
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//if (typeof(INodeControl).IsSubclassOf(viewType)
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// || typeof(NodeViewModelBase).IsSubclassOf(viewModelType))
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//{
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// nodeView = null;
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// return false;
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//}
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}
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/// <summary>
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/// 尝试在连接控制点之间创建连接线
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/// </summary>
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public void TryCreateConnectionOnJunction(NodeJunctionView startJunction)
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{
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if (MainCanvas is not null)
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{
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var myData = ConnectingData;
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var junctionSize = startJunction.GetTransformedBounds()!.Value.Bounds.Size;
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var junctionPoint = new Point(junctionSize.Width / 2, junctionSize.Height / 2);
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if (startJunction.TranslatePoint(junctionPoint, MainCanvas) is Point point)
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{
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myData.StartPoint = point;
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}
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else
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{
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return;
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}
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myData.Reset();
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myData.IsCreateing = true; // 表示开始连接
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myData.StartJunction = startJunction;
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myData.CurrentJunction = startJunction;
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var junctionOfConnectionType = startJunction.JunctionType.ToConnectyionType();
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ConnectionLineShape bezierLine; // 类别
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Brush brushColor; // 临时线的颜色
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if (junctionOfConnectionType == JunctionOfConnectionType.Invoke)
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{
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brushColor = ConnectionInvokeType.IsSucceed.ToLineColor();
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}
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else if (junctionOfConnectionType == JunctionOfConnectionType.Arg)
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{
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brushColor = ConnectionArgSourceType.GetOtherNodeData.ToLineColor();
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}
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else
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{
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return;
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}
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bezierLine = new ConnectionLineShape(myData.StartPoint,
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myData.StartPoint,
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brushColor,
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isTop: true); // 绘制临时的线
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//Mouse.OverrideCursor = Cursors.Cross; // 设置鼠标为正在创建连线
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myData.TempLine = new MyLine(MainCanvas, bezierLine);
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}
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}
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}
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}
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