结构调整，便于后续扩展

AIStudio.Wpf.Flowchart/ViewModels/FlowNode.cs

@@ -0,0 +1,165 @@
+using AIStudio.Wpf.BaseDiagram;
+using AIStudio.Wpf.BaseDiagram.Services;
+using AIStudio.Wpf.Flowchart.Models;
+using System.Collections.Generic;
+using System.ComponentModel;
+using Util.DiagramDesigner;
+
+namespace AIStudio.Wpf.Flowchart.ViewModels
+{
+    public class FlowNode : DesignerItemViewModelBase
+    {
+        protected IUIVisualizerService visualiserService;
+
+        public FlowNode(NodeKinds kind) : base()
+        {
+            Kind = kind;
+            Text = Kind.GetDescription();           
+            ItemWidth = 80;
+            ItemHeight = 40;
+
+        }
+
+        public FlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+
+        protected override void Init()
+        {
+            base.Init();
+
+            ShowRotate = false;
+            ShowText = true;
+            IsReadOnlyText = true;
+
+            visualiserService = ApplicationServicesProvider.Instance.Provider.VisualizerService;
+        }
+
+        protected override void LoadDesignerItemViewModel(IDiagramViewModel parent, SelectableDesignerItemBase designerbase)
+        {
+            base.LoadDesignerItemViewModel(parent, designerbase);
+
+            FlowNodeDesignerItem designer = designerbase as FlowNodeDesignerItem;
+            this.Color = designer.Color;
+            this.Kind = designer.Kind;
+            this.StateImage = designer.StateImage;
+
+            if (this is MiddleFlowNode middle)
+            {
+                middle.UserIds = designer.UserIds;
+                middle.RoleIds = designer.RoleIds;
+                middle.ActType = designer.ActType;
+            }
+        }
+
+        private string _color;
+        [Browsable(true)]
+        public string Color
+        {
+            get { return _color; }
+            set
+            {
+                SetProperty(ref _color, value);
+            }
+        } 
+
+        [Browsable(false)]
+        public NodeKinds Kind { get; set; }
+
+        [Browsable(false)]
+        public string StateImage { get; set; }
+
+        #region 没有存起来，仅仅测试使用,实际这些代码应该都在服务端
+        private int _status;
+    
+        public int Status
+        {
+            get { return _status; }
+            set
+            {
+                SetProperty(ref _status, value);
+            }
+        }
+
+        private string _remark;
+        public string Remark
+        {
+            get { return _remark; }
+            set
+            {
+                SetProperty(ref _remark, value);
+            }
+        }
+
+        public List<string> PreStepId { get; set; }
+        public string NextStepId { get; set; }
+        public Dictionary<string, string> SelectNextStep { get; set; } = new Dictionary<string, string>();
+        #endregion
+    }
+
+    public class StartFlowNode : FlowNode
+    {
+        public StartFlowNode() : base(NodeKinds.Start)
+        {
+
+        }
+
+        public StartFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class EndFlowNode : FlowNode
+    {
+        public EndFlowNode() : base(NodeKinds.End)
+        {
+
+        }
+
+        public EndFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class DecideFlowNode : FlowNode
+    {
+        public DecideFlowNode() : base(NodeKinds.Decide)
+        {
+
+        }
+
+        public DecideFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class COBeginFlowNode : FlowNode
+    {
+        public COBeginFlowNode() : base(NodeKinds.COBegin)
+        {
+
+        }
+
+        public COBeginFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class COEndFlowNode : FlowNode
+    {
+        public COEndFlowNode() : base(NodeKinds.COEnd)
+        {
+
+        }
+
+        public COEndFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+}