do redo

2026-03-02 15:50:51 +08:00 · 2023-03-26 23:23:34 +08:00
parent 90e94a7ec0
commit 43b5d82fae
31 changed files with 1692 additions and 518 deletions
--- a/AIStudio.Wpf.DiagramApp/ViewModels/MainWindowViewModel.cs
+++ b/AIStudio.Wpf.DiagramApp/ViewModels/MainWindowViewModel.cs
@@ -1166,14 +1166,14 @@ namespace AIStudio.Wpf.DiagramApp.ViewModels
                //var colors = ColorGallery.GetGradient(ColorGallery.StandardThemeColors[i], 10);
                //for (var j = 9; j >= 0; j--)
                //{
-                //    result.Add(colors[j]);
+                //    result.AddTo(colors[j]);
                //}
            }
            {
                //var colors = ColorGallery.GetGradient(Colors.Black, 10);
                //for (var j = 9; j >= 0; j--)
                //{
-                //    result.Add(colors[j]);
+                //    result.AddTo(colors[j]);
                //}
            }
            return result.ToArray();
--- a/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs
+++ b/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs
@@ -103,24 +103,24 @@ namespace AIStudio.Wpf.Flowchart
            var level1node = MindDiagramViewModel.RootItems.FirstOrDefault();

            MindNode level2node1_1 = new MindNode(DiagramViewModel) { Text = "分支主题1" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level1node, level2node1_1 });
+            level2node1_1.AddTo(level1node, 0, false);

            MindNode level2node1_1_1 = new MindNode(DiagramViewModel) { Text = "分支主题1_1" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level2node1_1, level2node1_1_1 });
+            level2node1_1_1.AddTo(level2node1_1, 0, false);

            MindNode level2node1_1_2 = new MindNode(DiagramViewModel) { Text = "分支主题1_2" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level2node1_1, level2node1_1_2 }); ;
+            level2node1_1_2.AddTo(level2node1_1, 0, false);         

            MindNode level2node1_1_3 = new MindNode(DiagramViewModel) { Text = "分支主题1_3" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level2node1_1, level2node1_1_3 });
+            level2node1_1_3.AddTo(level2node1_1, 0, false);         

            MindNode level2node1_2 = new MindNode(DiagramViewModel) { Text = "分支主题2" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level1node, level2node1_2 });
+            level2node1_2.AddTo(level1node, 0, false); 

            MindNode level2node1_3 = new MindNode(DiagramViewModel) { Text = "分支主题3" };
-            MindDiagramViewModel.AddChildCommand.Execute(new MindNode[] { level1node, level2node1_3 });
+            level2node1_3.AddTo(level1node, 0, false);

-            level1node.LayoutUpdated();
+            DiagramViewModel.Init();
        }

        protected override DiagramViewModel GetDiagramViewModel(string name, DiagramType diagramType)
--- a/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
+++ b/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
@@ -1819,6 +1819,11 @@
                            <Path Width="15" Height="15" Stretch="Uniform" Fill="Black" Data="M992.9 500.1H355c-19.3 0-35 15.7-35 35V660H182V340.8h427.8c32 0 58-26 58-58V58c0-32-25.9-58-58-58H58C26 0 0 26 0 58v224.8c0 32 26 58 58 58h54V689c0 13.3 7.4 24.8 18.2 30.7 6.3 6.3 15.1 10.3 24.8 10.3h165v145.9c0 19.3 15.7 35 35 35h226c19.3 0 35-15.7 35-35s-15.7-35-35-35H390V570.1h567.9V611c0 19.3 15.7 35 35 35s35-15.7 35-35v-75.9c0-19.3-15.7-35-35-35zM70 70h527.8v200.8H70V70zM989 830h-89v-89c0-19.3-15.7-35-35-35s-35 15.7-35 35v89h-89c-19.3 0-35 15.7-35 35s15.7 35 35 35h89v89c0 19.3 15.7 35 35 35s35-15.7 35-35v-89h89c19.3 0 35-15.7 35-35s-15.7-35-35-35z"></Path>
                        </Fluent:Button.Icon>
                    </Fluent:Button>
+                    <Fluent:Button Header="新建根主题" Width="70" VerticalAlignment="Top" Command="{Binding PageViewModel.DiagramViewModel.AddRootCommand}">
+                        <Fluent:Button.LargeIcon>
+                            <Path Width="15" Height="15" Stretch="Uniform" Fill="Black" Data="M696 334.2H326.6c-27.4 0-49.7-22.3-49.7-49.7V114c0-27.4 22.3-49.7 49.7-49.7H696c27.4 0 49.7 22.3 49.7 49.7v170.5c0.1 27.4-22.2 49.7-49.7 49.7zM326.6 106.8c-3.9 0-7.1 3.3-7.1 7.1v170.5c0 3.9 3.3 7.1 7.1 7.1H696c3.9 0 7.1-3.3 7.1-7.1V114c0-3.9-3.3-7.1-7.1-7.1H326.6zM895 960.8H127.7c-27.4 0-49.7-22.3-49.7-49.7V541.6c0-27.4 22.3-49.7 49.7-49.7H895c27.4 0 49.7 22.3 49.7 49.7V911c0 27.5-22.3 49.8-49.7 49.8zM127.7 534.5c-3.9 0-7.1 3.3-7.1 7.1V911c0 3.9 3.3 7.1 7.1 7.1H895c3.9 0 7.1-3.3 7.1-7.1V541.6c0-3.9-3.3-7.1-7.1-7.1H127.7zM511.4 533.1c-11.8 0-21.3-9.5-21.3-21.3l-0.1-198.9c0-11.8 9.5-21.3 21.3-21.3s21.3 9.5 21.3 21.3l0.1 198.9c0 11.8-9.5 21.3-21.3 21.3z"></Path>
+                        </Fluent:Button.LargeIcon>
+                    </Fluent:Button>
                    <Fluent:Button Header="上移" SizeDefinition="Middle" Width="60" VerticalAlignment="Top" Command="{Binding PageViewModel.DiagramViewModel.MoveForwardCommand}">
                        <Fluent:Button.Icon>
                            <Path Width="15" Height="15" Stretch="Uniform" Fill="Black" Data="M62.5 500L312.5 500L312.5 937.5L687.5 937.5L687.5 500L937.5 500L500 62.5Z"></Path>
@@ -1867,11 +1872,11 @@
                        </Fluent:SplitButton.LargeIcon>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="文件地址："></TextBlock>
-                            <TextBox x:Name="imageurl" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.SelectedItem.ImageInfo.Url}"/>
+                            <TextBox x:Name="imageurl" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.ImageInfo.Url}"/>
                        </StackPanel>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="提示文本："></TextBlock>
-                            <TextBox x:Name="imagetext" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.SelectedItem.ImageInfo.Text}"/>
+                            <TextBox x:Name="imagetext" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.ImageInfo.Text}"/>
                        </StackPanel>
                        <Fluent:MenuItem Header="插入图片" Command="{Binding PageViewModel.DiagramViewModel.AddImageCommand}">
                            <MenuItem.CommandParameter>
@@ -1892,7 +1897,7 @@
                        <Fluent:SplitButton.LargeIcon>
                            <iconPacks:PackIconMaterial Kind="TextBoxOutline" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                        </Fluent:SplitButton.LargeIcon>
-                        <TextBox x:Name="remark" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.SelectedItem.Remark}"/>
+                        <TextBox x:Name="remark" Width="300" Height="50" Text="{Binding PageViewModel.DiagramViewModel.Remark}"/>
                        <Fluent:MenuItem Header="插入备注" Command="{Binding PageViewModel.DiagramViewModel.AddRemarkCommand}" CommandParameter="{Binding ElementName=remark,Path=Text}"></Fluent:MenuItem>
                        <Fluent:MenuItem Header="移除已有备注" Command="{Binding PageViewModel.DiagramViewModel.RemoveRemarkCommand}"></Fluent:MenuItem>
                        <Fluent:SplitButton.ToolTip>
--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/LabelsViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/LabelsViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public LabelsViewModel()
        {
-            Title = "Link Labels";
+            Title = "Url Labels";
            Info = "Labels help you show more information through out a link. You can specify a distance or an offset." +
                "The content of the labels is still limited because of Blazor's poor SVG support.";
           
--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/MarkersViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/MarkersViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public MarkersViewModel()
        {
-            Title = "Link Markers";
+            Title = "Url Markers";
            Info = "Markers are SVG Paths that you can put at the beginning or at the end of your links.";

            DiagramViewModel = new DiagramViewModel();
--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/PathGeneratorsViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/PathGeneratorsViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public PathGeneratorsViewModel()
        {
-            Title = "Link Path Generators";
+            Title = "Url Path Generators";
            Info = "Path generators are functions that take as input the calculated route and output SVG paths, " +
                "alongside the markers positions and their angles. There are currently two generators: Straight and Smooth.";

--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/RoutersViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/RoutersViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public RoutersViewModel()
        {
-            Title = "Link Routers";
+            Title = "Url Routers";
            Info = "Routers are functions that take as input the link's vertices and can add points in between. " +
                "There are currently two routers: Normal and Orthogonal.";

--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/SnappingViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/SnappingViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public SnappingViewModel()
        {
-            Title = "Link Snapping";
+            Title = "Url Snapping";
            Info = "While dragging a new link, it will try to find (and link) to the closest target within a radius.";

            DiagramViewModel = new DiagramViewModel();
--- a/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/VerticesViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Links/VerticesViewModel.cs
@@ -9,7 +9,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
    {
        public VerticesViewModel()
        {
-            Title = "Link Vertices";
+            Title = "Url Vertices";
            Info = "Click on a link to create a vertex. Double click on a vertex to delete it. " +
                "You can drag the vertices around.";
         
--- a/AIStudio.Wpf.DiagramDesigner/Controls/DragThumb.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Controls/DragThumb.cs
@@ -4,6 +4,7 @@ using System.Linq;
 using System.Windows;
 using System.Windows.Controls.Primitives;
 using System.Windows.Media;
+using AIStudio.Wpf.DiagramDesigner.Geometrys;

 namespace AIStudio.Wpf.DiagramDesigner.Controls
 {
@@ -16,6 +17,13 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            base.DragCompleted += DragThumb_DragCompleted;
        }

+        public IDiagramViewModel DiagramViewModel
+        {
+            get
+            {
+                return (this.DataContext as SelectableDesignerItemViewModelBase)?.Root;
+            }
+        }
        private List<SelectableDesignerItemViewModelBase> designerItems;

        private bool drag;
@@ -51,11 +59,10 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls

                designerItems = designerItems.Distinct().ToList();

+                DiagramViewModel.DoCommandManager.BeginDo = true;
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
-                {
-                    item.BeginDo = true;
-                    item.SetOldValue(item.Left, nameof(item.Left));
-                    item.SetOldValue(item.Top, nameof(item.Top));
+                {                  
+                    item.SetOldValue(item.TopLeft, nameof(item.TopLeft));
                }

                e.Handled = true;
@@ -75,10 +82,25 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
                {
                    item.SetCellAlignment();
-                    item.BeginDo = false;
-                    item.RaiseTopLeft();
                }

+                Dictionary<DesignerItemViewModelBase, Tuple<PointBase, PointBase>> infos = 
+                    designerItems.OfType<DesignerItemViewModelBase>().ToDictionary(p => p, 
+                    p => new Tuple<PointBase, PointBase>(p.GetOldValue< PointBase >(nameof(p.TopLeft)), p.TopLeft));
+                DiagramViewModel.DoCommandManager.BeginDo = false;
+                DiagramViewModel.DoCommandManager.DoNewCommand(this.ToString(),
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.TopLeft = info.Value.Item2;
+                      }
+                  },
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.TopLeft = info.Value.Item1;
+                      }
+                  });
                e.Handled = true;
            }
        }
--- a/AIStudio.Wpf.DiagramDesigner/Controls/ResizeThumb.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Controls/ResizeThumb.cs
@@ -5,6 +5,7 @@ using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
 using System.Windows.Media;
+using AIStudio.Wpf.DiagramDesigner.Geometrys;

 namespace AIStudio.Wpf.DiagramDesigner.Controls
 {
@@ -17,6 +18,14 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            base.DragCompleted += ResizeThumb_DragCompleted;
        }

+        public IDiagramViewModel DiagramViewModel
+        {
+            get
+            {
+                return (this.DataContext as SelectableDesignerItemViewModelBase)?.Root;
+            }
+        }
+
        private List<SelectableDesignerItemViewModelBase> designerItems;
        IDiagramViewModel diagarmViewModel;

@@ -27,11 +36,11 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            if (designerItem != null && designerItem.IsSelected)
            {
                designerItems = designerItem.Root.SelectedItems.ToList();
+
+                DiagramViewModel.DoCommandManager.BeginDo = true;
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
                {
-                    item.BeginDo = true;
-                    item.SetOldValue(item.ItemWidth, nameof(item.ItemWidth));
-                    item.SetOldValue(item.ItemHeight, nameof(item.ItemHeight));
+                    item.SetOldValue(item.Size, nameof(item.Size));
                }

                e.Handled = true;
@@ -48,10 +57,26 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            {
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
                {
-                    item.BeginDo = false;
-                    item.RaiseItemWidthHeight();
+                 
                }

+                Dictionary<DesignerItemViewModelBase, Tuple<SizeBase, SizeBase>> infos =
+                  designerItems.OfType<DesignerItemViewModelBase>().ToDictionary(p => p,
+                  p => new Tuple<SizeBase, SizeBase>(p.GetOldValue<SizeBase>(nameof(p.Size)), p.Size));
+                DiagramViewModel.DoCommandManager.BeginDo = false;
+                DiagramViewModel.DoCommandManager.DoNewCommand(this.ToString(),
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.Size = info.Value.Item2;
+                      }
+                  },
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.Size = info.Value.Item1;
+                      }
+                  });
                e.Handled = true;
            }
        }
--- a/AIStudio.Wpf.DiagramDesigner/Controls/RotateThumb.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Controls/RotateThumb.cs
@@ -24,6 +24,14 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            DragCompleted += RotateThumb_DragCompleted;
        }

+        public IDiagramViewModel DiagramViewModel
+        {
+            get
+            {
+                return (this.DataContext as SelectableDesignerItemViewModelBase)?.Root;
+            }
+        }
+
        private List<SelectableDesignerItemViewModelBase> designerItems;

        private void RotateThumb_DragStarted(object sender, DragStartedEventArgs e)
@@ -34,9 +42,9 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            {
                designerItems = designerItem.Root.SelectedItems.ToList();

+                DiagramViewModel.DoCommandManager.BeginDo = true;
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
                {
-                    item.BeginDo = true;
                    item.SetOldValue(this.designerItem.Angle, nameof(this.designerItem.Angle));
                }

@@ -69,10 +77,26 @@ namespace AIStudio.Wpf.DiagramDesigner.Controls
            {
                foreach (DesignerItemViewModelBase item in designerItems.OfType<DesignerItemViewModelBase>())
                {
-                    item.BeginDo = false;
-                    item.RaiseAngle();
+                  
                }

+                Dictionary<DesignerItemViewModelBase, Tuple<double, double>> infos =
+                   designerItems.OfType<DesignerItemViewModelBase>().ToDictionary(p => p,
+                   p => new Tuple<double, double>(p.GetOldValue<double>(nameof(p.Angle)), p.Angle));
+                DiagramViewModel.DoCommandManager.BeginDo = false;
+                DiagramViewModel.DoCommandManager.DoNewCommand(this.ToString(),
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.Angle = info.Value.Item2;
+                      }
+                  },
+                  () => {
+                      foreach (var info in infos)
+                      {
+                          info.Key.Angle = info.Value.Item1;
+                      }
+                  });
                e.Handled = true;
            }
        }
--- a/AIStudio.Wpf.DiagramDesigner/Helpers/DoCommandManager.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Helpers/DoCommandManager.cs
@@ -53,7 +53,7 @@ namespace AIStudio.Wpf.DiagramDesigner
            get; private set;
        }

-        public int Capacity { get; set; } = 10;
+        public int Capacity { get; set; } = 100;

        public DoCommandManager()
        {
@@ -66,10 +66,18 @@ namespace AIStudio.Wpf.DiagramDesigner
            UnDoActionStack = new Stack<Command>();
        }

+        public bool BeginDo
+        {
+            get;set;
+        }
+
        private bool _undoing;
        public void DoNewCommand(string name, Action action, Action unDoAction, Action clearAction = null, bool doit = true)
        {
-            if (_undoing == true) return;
+            if (BeginDo == true)
+                return;
+            if (_undoing == true) 
+                return;
            try
            {
                _undoing = true;
@@ -103,7 +111,8 @@ namespace AIStudio.Wpf.DiagramDesigner
            if (!CanUnDo)
                return;

-            if (_undoing == true) return;
+            if (_undoing == true) 
+                return;
            try
            {
                _undoing = true;
@@ -123,7 +132,8 @@ namespace AIStudio.Wpf.DiagramDesigner
            if (!CanReDo)
                return;

-            if (_undoing == true) return;
+            if (_undoing == true)
+                return;
            try
            {
                _undoing = true;
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs
@@ -553,11 +553,6 @@ namespace AIStudio.Wpf.DiagramDesigner
            }
        }

-        public bool BeginDo
-        {
-            get; set;
-        }
-
        public IObservable<NotifyCollectionChangedEventArgs> WhenConnectorsChanged
        {
            get
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs
@@ -319,16 +319,16 @@ namespace AIStudio.Wpf.DiagramDesigner
            }
        }

-        private Size _gridMargin = new Size(28, 28);
+        private Size _gridMarginSize = new Size(28, 28);
        public Size GridMarginSize
        {
            get
            {
-                return _gridMargin;
+                return _gridMarginSize;
            }
            set
            {
-                SetProperty(ref _gridMargin, value);
+                SetProperty(ref _gridMarginSize, value);
            }
        }

@@ -336,11 +336,11 @@ namespace AIStudio.Wpf.DiagramDesigner
        {
            get
            {
-                return _gridMargin.Width;
+                return _gridMarginSize.Width;
            }
            set
            {
-                _gridMargin.Width = value;
+                _gridMarginSize.Width = value;
                RaisePropertyChanged(nameof(GridMarginSize));
            }
        }
@@ -349,11 +349,11 @@ namespace AIStudio.Wpf.DiagramDesigner
        {
            get
            {
-                return _gridMargin.Height;
+                return _gridMarginSize.Height;
            }
            set
            {
-                _gridMargin.Height = value;
+                _gridMarginSize.Height = value;
                RaisePropertyChanged(nameof(GridMarginSize));
            }
        }
@@ -630,7 +630,7 @@ namespace AIStudio.Wpf.DiagramDesigner
            get; set;
        } = true;

-        protected DoCommandManager DoCommandManager = new DoCommandManager();
+        public DoCommandManager DoCommandManager { get; private set; } = new DoCommandManager();

        public event DiagramEventHandler Event;

@@ -1181,7 +1181,7 @@ namespace AIStudio.Wpf.DiagramDesigner
            RaisePropertyChanged("Items");
        }

-        private void Item_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        protected virtual void Item_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            RaisePropertyChanged(sender, e.PropertyName);
            if (e.PropertyName == "IsSelected")
@@ -1189,12 +1189,6 @@ namespace AIStudio.Wpf.DiagramDesigner
                RaisePropertyChanged(nameof(SelectedItem));
            }

-            //连续改变，需要特殊处理，不单独触发属性改变ReDo
-            if (sender is DesignerItemViewModelBase designer)
-            {
-                if (designer.BeginDo) return;
-            }
-
            var selectable = sender as SelectableViewModelBase;

            if (e is ValuePropertyChangedEventArgs valuePropertyChangedEventArgs)
@@ -1211,6 +1205,8 @@ namespace AIStudio.Wpf.DiagramDesigner
            }
        }

+       
+
        //提供给标尺计算，延迟100ms，等布局改变再计算。
        private void OnZoomValueChanged(string obj)
        {
@@ -1392,7 +1388,7 @@ namespace AIStudio.Wpf.DiagramDesigner

        public void ClearSelectedItems()
        {
-            foreach (var item in this.Items.ToList())
+            foreach (var item in this.SelectedItems.ToList())
            {
                item.IsSelected = false;
            }
@@ -2356,6 +2352,8 @@ namespace AIStudio.Wpf.DiagramDesigner
            FitViewModel = new FitViewModel() { BoundingRect = DiagramViewModelHelper.GetBoundingRectangle(selectedItems) };
        }

+
+
        public void UpdateZIndex()
        {
            List<SelectableDesignerItemViewModelBase> ordered = Items.OrderBy(p => p.ZIndex).ToList();
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/IDiagramViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/IDiagramViewModel.cs
@@ -322,6 +322,10 @@ namespace AIStudio.Wpf.DiagramDesigner
        }
        #endregion

+        DoCommandManager DoCommandManager
+        {
+            get; 
+        }
        #region 设置选项
        DiagramOption DiagramOption
        {
--- a/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_0bdyaape_wpftmp.csproj
+++ b/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_0bdyaape_wpftmp.csproj
@@ -0,0 +1,249 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.Mind</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\AIStudio.Wpf.Mind\obj\</MSBuildProjectExtensionsPath>
+    <_TargetAssemblyProjectName>AIStudio.Wpf.Mind</_TargetAssemblyProjectName>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
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--- a/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_5ymptayx_wpftmp.csproj
+++ b/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_5ymptayx_wpftmp.csproj
@@ -0,0 +1,249 @@
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+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.Mind</AssemblyName>
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+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
+    <PackageIconUrl />
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+    <Description>一个Wpf的思维导图控件</Description>
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+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.Mind\obj\Debug\netcoreapp3.1\GeneratedInternalTypeHelper.g.cs" />
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--- a/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_rllyqvfb_wpftmp.csproj
+++ b/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_rllyqvfb_wpftmp.csproj
@@ -0,0 +1,179 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.Mind</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\AIStudio.Wpf.Mind\obj\</MSBuildProjectExtensionsPath>
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+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
+    <PackageIconUrl />
+    <NeutralLanguage />
+    <Version>1.0.6</Version>
+    <Description>一个Wpf的思维导图控件</Description>
+  </PropertyGroup>
+  <ItemGroup>
+    <None Include="A.png">
+      <Pack>True</Pack>
+      <PackagePath>
+      </PackagePath>
+    </None>
+  </ItemGroup>
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+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.Mind\obj\Debug\net461\GeneratedInternalTypeHelper.g.cs" />
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+</Project>
--- a/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml
+++ b/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml
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                        </Button>
                    </UniformGrid>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <UniformGrid Rows="1">
                        <controls:DropDownButton>
                            <controls:DropDownButton.Content>
@@ -107,11 +107,11 @@
                            <controls:DropDownButton.Items>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock Text="链接地址："></TextBlock>
-                                    <TextBox x:Name="link" Width="300" Height="50" Text="{Binding SelectedItem.LinkInfo.Link}"/>
+                                    <TextBox x:Name="link" Width="300" Height="50" Text="{Binding LinkInfo.Url}"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock Text="提示文本："></TextBlock>
-                                    <TextBox x:Name="linktext" Width="300" Height="50" Text="{Binding SelectedItem.LinkInfo.Text}"/>
+                                    <TextBox x:Name="linktext" Width="300" Height="50" Text="{Binding LinkInfo.Text}"/>
                                </StackPanel>
                                <MenuItem Header="插入链接" Command="{Binding AddLinkCommand}">
                                    <MenuItem.CommandParameter>
@@ -134,11 +134,11 @@
                            <controls:DropDownButton.Items>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock Text="文件地址："></TextBlock>
-                                    <TextBox x:Name="imageurl" Width="300" Height="50" Text="{Binding SelectedItem.ImageInfo.Url}"/>
+                                    <TextBox x:Name="imageurl" Width="300" Height="50" Text="{Binding ImageInfo.Url}"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock Text="提示文本："></TextBlock>
-                                    <TextBox x:Name="imagetext" Width="300" Height="50" Text="{Binding SelectedItem.ImageInfo.Text}"/>
+                                    <TextBox x:Name="imagetext" Width="300" Height="50" Text="{Binding ImageInfo.Text}"/>
                                </StackPanel>
                                <MenuItem Header="插入图片" Command="{Binding AddImageCommand}">
                                    <MenuItem.CommandParameter>
@@ -159,13 +159,13 @@
                                </StackPanel>
                            </controls:DropDownButton.Content>
                            <controls:DropDownButton.Items>
-                                <TextBox x:Name="remark" Width="300" Height="50" Text="{Binding SelectedItem.Remark}"/>
+                                <TextBox x:Name="remark" Width="300" Height="50" Text="{Binding Remark}"/>
                                <MenuItem Header="插入备注" Command="{Binding AddRemarkCommand}" CommandParameter="{Binding ElementName=remark,Path=Text}"></MenuItem>
                                <MenuItem Header="移除已有备注" Command="{Binding RemoveRemarkCommand}"></MenuItem>
                            </controls:DropDownButton.Items>
                        </controls:DropDownButton>
                    </UniformGrid>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <UniformGrid Columns="5">
                        <Button Style="{StaticResource FlatButtonStyle}"                 
                                Background="#FFC5BDAE" 
@@ -290,7 +290,7 @@
                            </Path>
                        </Button>
                    </UniformGrid>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <UniformGrid Columns="5">
                        <Button Style="{StaticResource FlatCircleButtonStyle}"
                                Background="Yellow"
@@ -373,6 +373,7 @@
                            <Path Stretch="Uniform" Fill="Green" Data="m 256,76 c 48.1,0 93.3,18.7 127.3,52.7 34,34 52.7,79.2 52.7,127.3 0,48.1 -18.7,93.3 -52.7,127.3 -34,34 -79.2,52.7 -127.3,52.7 -48.1,0 -93.3,-18.7 -127.3,-52.7 C 94.7,349.3 76,304.1 76,256 76,207.9 94.7,162.7 128.7,128.7 162.7,94.7 207.9,76 256,76 m 0,-28 C 141.1,48 48,141.1 48,256 48,370.9 141.1,464 256,464 370.9,464 464,370.9 464,256 464,141.1 370.9,48 256,48 Z M 362.6,192.9 345,174.8 c -0.7,-0.8 -1.8,-1.2 -2.8,-1.2 -1.1,0 -2.1,0.4 -2.8,1.2 L 217.4,297.7 173,253.3 c -0.8,-0.8 -1.8,-1.2 -2.8,-1.2 -1,0 -2,0.4 -2.8,1.2 l -17.8,17.8 c -1.6,1.6 -1.6,4.1 0,5.7 l 56,56 c 3.6,3.6 8,5.7 11.7,5.7 5.3,0 9.9,-3.9 11.6,-5.5 H 229 L 362.7,198.6 c 1.4,-1.7 1.4,-4.2 -0.1,-5.7 z"></Path>
                        </Button>
                    </UniformGrid>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <Grid>
                        <Border BorderBrush="Gray" BorderThickness="1" CornerRadius="3">
                            <Grid>
@@ -425,7 +426,7 @@
                            <MenuItem Header="天盘图" IsCheckable="True" IsEnabled="False" ToolTip="暂未完成" IsChecked="{Binding MindType,Converter={dd:ConverterValueMapToBool Parameter='Celestial'}, ConverterParameter='Celestial'}" />
                        </controls:DropDownButton.Items>
                    </controls:DropDownButton>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <controls:DropDownButton>
                        <controls:DropDownButton.Content>
                            <Border Background="{Binding MindThemeModel.MindThemeLevel1.FillColor,Converter={StaticResource ColorBrushConverter}}" CornerRadius="3">
@@ -454,14 +455,14 @@
                            <MenuItem Header="紧凑黄" Background="#e9df98" Margin="1.5" Command="{Binding ChangeMindThemeCommand}" CommandParameter="紧凑冷"/>
                        </controls:DropDownButton.Items>
                    </controls:DropDownButton>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <Button Style="{StaticResource FlatButtonStyle}" Command="{Binding ResetLayoutCommand}">
                        <StackPanel>
                            <Path Width="18" Height="18" Stretch="Uniform" Fill="Black" Data="M358.4 0a102.4 102.4 0 0 1 102.4 102.4v819.2a102.4 102.4 0 0 1-102.4 102.4H102.4a102.4 102.4 0 0 1-102.4-102.4V102.4a102.4 102.4 0 0 1 102.4-102.4h256z m0 76.8H102.4a25.6 25.6 0 0 0-25.1904 20.992L76.8 102.4v819.2a25.6 25.6 0 0 0 20.992 25.1904L102.4 947.2h256a25.6 25.6 0 0 0 25.1904-20.992L384 921.6V102.4a25.6 25.6 0 0 0-20.992-25.1904L358.4 76.8z m268.288 547.84a38.4 38.4 0 0 1 50.1248-1.8432l4.1472 3.8912a38.4 38.4 0 0 1 1.8432 50.1248L630.272 742.4h333.7216l4.6592 0.3584c16.7936 2.56 29.696 18.5856 29.696 38.0416 0 21.1968-15.36 38.4-34.3552 38.4h-333.6704l52.4288 65.6384 3.2256 4.6592a38.4 38.4 0 0 1-63.232 43.3152l-102.4-128-3.328-4.9152a38.4 38.4 0 0 1 3.328-43.0592l102.4-128zM921.6 0a102.4 102.4 0 0 1 102.4 102.4v256a102.4 102.4 0 0 1-102.4 102.4h-256a102.4 102.4 0 0 1-102.4-102.4V102.4a102.4 102.4 0 0 1 102.4-102.4h256z m0 76.8h-256a25.6 25.6 0 0 0-25.1904 20.992L640 102.4v256a25.6 25.6 0 0 0 20.992 25.1904L665.6 384h256a25.6 25.6 0 0 0 25.1904-20.992L947.2 358.4V102.4a25.6 25.6 0 0 0-20.992-25.1904L921.6 76.8z"></Path>
                            <TextBlock>整理布局</TextBlock>
                        </StackPanel>
                    </Button>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition/>
@@ -490,7 +491,7 @@
                            </StackPanel>
                        </Button>
                    </Grid>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition/>
@@ -611,7 +612,7 @@
                            <MenuItem Header="选择子树" Command="{Binding SelectChildCommand}" />
                        </controls:DropDownButton.Items>
                    </controls:DropDownButton>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <StackPanel Orientation="Horizontal">
                        <Button Style="{StaticResource FlatButtonStyle}" Grid.Column="4" Command="{Binding CenterMoveCommand}">
                            <StackPanel>
@@ -642,7 +643,7 @@
                            </StackPanel>
                        </Button>
                    </StackPanel>
-                    <Line X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
+                    <Line Margin="2,0" X1="0" Y1="0" X2="0" Y2="100" StrokeDashArray="1" Stroke="Gray"  StrokeThickness="1"></Line>
                    <Button Style="{StaticResource FlatButtonStyle}" Command="{Binding SearchDownCommand}" CommandParameter="{Binding ElementName=txtsearch,Path=Text}">
                        <StackPanel>
                            <Path Width="18" Height="18" Stretch="Uniform" Fill="Black" Data="M911.958045 890.721335l-241.415018-246.54112a336.369964 336.369964 0 1 0-58.095828 45.158522l247.029321 252.643623a36.859118 36.859118 0 0 0 51.749225 0 37.103218 37.103218 0 0 0 0.7323-51.261025zM176.240286 404.473897a261.431228 261.431228 0 1 1 261.431228 261.431228A261.675328 261.675328 0 0 1 176.240286 404.473897z"></Path>
--- a/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs
@@ -26,7 +26,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Bottom, true) { XRatio = 0.5, YRatio = 1 };
@@ -42,7 +42,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Top, true) { XRatio = 0.5, YRatio = 0 };
@@ -59,7 +59,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 0.5 };
@@ -80,6 +80,9 @@ namespace AIStudio.Wpf.Mind.Helpers

        public ConnectionViewModel GetOrSetConnectionViewModel(MindNode source, MindNode sink, ConnectionViewModel connector = null)
        {
+            if (source == null || sink == null) 
+                return null;
+
            if (connector == null)
            {
                connector = new ConnectionViewModel(source.Root, source.FirstConnector, sink.FirstConnector, DrawMode.ConnectingLineStraight, RouterMode.RouterOrthogonal);
--- a/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs
@@ -30,7 +30,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Right, true) { XRatio = 1, YRatio = 0.5 };
@@ -45,7 +45,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.BottomLeft, true) { XRatio = 0, YRatio = 1 };
@@ -63,7 +63,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 0.5 };
@@ -88,6 +88,9 @@ namespace AIStudio.Wpf.Mind.Helpers

        public ConnectionViewModel GetOrSetConnectionViewModel(MindNode source, MindNode sink, ConnectionViewModel connector = null)
        {
+            if (source == null || sink == null)
+                return null;
+
            DrawMode drawMode;
            RouterMode routerMode;
            if (source.NodeLevel == 0)
--- a/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs
@@ -26,7 +26,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.None, true) { XRatio = 0.5, YRatio = 0.5 };
@@ -41,7 +41,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 0.5 };
@@ -58,7 +58,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 1 };
@@ -78,6 +78,9 @@ namespace AIStudio.Wpf.Mind.Helpers
        }
        public ConnectionViewModel GetOrSetConnectionViewModel(MindNode source, MindNode sink, ConnectionViewModel connector = null)
        {
+            if (source == null || sink == null)
+                return null;
+
            if (connector == null)
            {
                connector = new ConnectionViewModel(source.Root, source.FirstConnector, sink.FirstConnector, DrawMode.ConnectingLineSmooth, RouterMode.RouterNormal);
--- a/AIStudio.Wpf.Mind/Helpers/MindLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/MindLayout.cs
@@ -26,7 +26,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.None, true) { XRatio = 0.5, YRatio = 0.5 };
@@ -41,7 +41,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 0.5 };
@@ -58,7 +58,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Left, true) { XRatio = 0, YRatio = 1 };
@@ -79,6 +79,9 @@ namespace AIStudio.Wpf.Mind.Helpers

        public ConnectionViewModel GetOrSetConnectionViewModel(MindNode source, MindNode sink, ConnectionViewModel connector = null)
        {
+            if (source == null || sink == null)
+                return null;
+
            if (connector == null)
            {
                connector = new ConnectionViewModel(source.Root, source.FirstConnector, sink.FirstConnector, DrawMode.ConnectingLineSmooth, RouterMode.RouterNormal);
--- a/AIStudio.Wpf.Mind/Helpers/MindThemeHelper.cs
+++ b/AIStudio.Wpf.Mind/Helpers/MindThemeHelper.cs
@@ -5,6 +5,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Media;
 using System.Xml.Linq;
+using AIStudio.Wpf.DiagramDesigner;
 using AIStudio.Wpf.DiagramDesigner.Geometrys;
 using AIStudio.Wpf.Mind.ViewModels;

@@ -569,14 +570,17 @@ namespace AIStudio.Wpf.Mind.Helpers
            };
        }

-        public static void ThemeChange(MindNode mindNode, MindThemeModel mindThemeModel)
+        public static void ThemeChange(MindNode mindNode, MindThemeModel mindThemeModel, bool initAppearance = false)
        {
            switch (mindNode.NodeLevel)
            {
                case 0:
                    {
-                        mindNode.ItemWidth = mindThemeModel.MindThemeLevel1.ItemWidth;
-                        mindNode.ItemHeight = mindThemeModel.MindThemeLevel1.ItemHeight;
+                        if (initAppearance)
+                        {
+                            mindNode.ItemWidth = mindThemeModel.MindThemeLevel1.ItemWidth;
+                            mindNode.ItemHeight = mindThemeModel.MindThemeLevel1.ItemHeight;
+                        }
                        mindNode.ColorViewModel.FillColor.Color = mindThemeModel.MindThemeLevel1.FillColor;
                        mindNode.ColorViewModel.LineColor.Color = mindThemeModel.MindThemeLevel1.LineColor;
                        mindNode.FontViewModel.FontColor = mindThemeModel.MindThemeLevel1.FontColor;
@@ -586,8 +590,11 @@ namespace AIStudio.Wpf.Mind.Helpers
                    }
                case 1:
                    {
-                        mindNode.ItemWidth = mindThemeModel.MindThemeLevel2.ItemWidth;
-                        mindNode.ItemHeight = mindThemeModel.MindThemeLevel2.ItemHeight;
+                        if (initAppearance)
+                        {
+                            mindNode.ItemWidth = mindThemeModel.MindThemeLevel2.ItemWidth;
+                            mindNode.ItemHeight = mindThemeModel.MindThemeLevel2.ItemHeight;
+                        }
                        mindNode.ColorViewModel.FillColor.Color = mindThemeModel.MindThemeLevel2.FillColor;
                        mindNode.ColorViewModel.LineColor.Color = mindThemeModel.MindThemeLevel2.LineColor;
                        mindNode.FontViewModel.FontColor = mindThemeModel.MindThemeLevel2.FontColor;
@@ -597,8 +604,11 @@ namespace AIStudio.Wpf.Mind.Helpers
                    }
                default:
                    {
-                        mindNode.ItemWidth = mindThemeModel.MindThemeLevel3.ItemWidth;
-                        mindNode.ItemHeight = mindThemeModel.MindThemeLevel3.ItemHeight;
+                        if (initAppearance)
+                        {
+                            mindNode.ItemWidth = mindThemeModel.MindThemeLevel3.ItemWidth;
+                            mindNode.ItemHeight = mindThemeModel.MindThemeLevel3.ItemHeight;
+                        }
                        mindNode.ColorViewModel.FillColor.Color = mindThemeModel.MindThemeLevel3.FillColor;
                        mindNode.ColorViewModel.LineColor.Color = mindThemeModel.MindThemeLevel3.LineColor;
                        mindNode.FontViewModel.FontColor = mindThemeModel.MindThemeLevel3.FontColor;
@@ -608,6 +618,49 @@ namespace AIStudio.Wpf.Mind.Helpers
                    }
            }
        }
+
+        public static MindThemeModel GetThemeModel(MindNode mindNode)
+        {
+            MindThemeModel mindThemeModel = new MindThemeModel()
+            {
+                MindThemeLevel1 = new MindTheme()
+                {
+                    ItemWidth = mindNode.ItemWidth,
+                    ItemHeight = mindNode.ItemHeight,
+                    FillColor = mindNode.ColorViewModel.FillColor.Color,
+                    LineColor = mindNode.ColorViewModel.LineColor.Color,
+                    FontColor = mindNode.FontViewModel.FontColor,
+                    FontSize = mindNode.FontViewModel.FontSize,
+                    Spacing = mindNode.Spacing,
+                },
+            };
+            return mindThemeModel;
+        }
+
+        public static void SetThemeModel(MindNode mindNode, MindThemeModel mindThemeModel)
+        {
+            mindNode.ItemWidth = mindThemeModel.MindThemeLevel1.ItemWidth;
+            mindNode.ItemHeight = mindThemeModel.MindThemeLevel1.ItemHeight;
+            mindNode.ColorViewModel.FillColor.Color = mindThemeModel.MindThemeLevel1.FillColor;
+            mindNode.ColorViewModel.LineColor.Color = mindThemeModel.MindThemeLevel1.LineColor;
+            mindNode.FontViewModel.FontColor = mindThemeModel.MindThemeLevel1.FontColor;
+            mindNode.FontViewModel.FontSize = mindThemeModel.MindThemeLevel1.FontSize;
+            mindNode.Spacing = mindThemeModel.MindThemeLevel1.Spacing;
+        }
+
+        public static IColorViewModel GetColorViewModel(MindNode mindNode)
+        {
+            ColorViewModel colorViewModel = new ColorViewModel();
+            CopyHelper.CopyPropertyValue(mindNode.ColorViewModel, colorViewModel);
+            return colorViewModel;
+        }
+
+        public static IFontViewModel GetFontViewModel(MindNode mindNode)
+        {
+            FontViewModel fontViewModel = new FontViewModel();
+            CopyHelper.CopyPropertyValue(mindNode.FontViewModel, fontViewModel);
+            return fontViewModel;
+        }
    }

    public class MindTheme
--- a/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs
@@ -26,7 +26,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Bottom, true) { XRatio = 0.5, YRatio = 1 };
@@ -41,7 +41,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Top, true) { XRatio = 0.5, YRatio = 0 };
@@ -59,7 +59,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                    {
                        if (initAppearance)
                        {
-                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel);
+                            MindThemeHelper.ThemeChange(mindNode, mindThemeModel, initAppearance);

                            mindNode.ClearConnectors();
                            var port1 = new FullyCreatedConnectorInfo(mindNode.Root, mindNode, ConnectorOrientation.Top, true) { XRatio = 0.5, YRatio = 0 };
@@ -80,6 +80,9 @@ namespace AIStudio.Wpf.Mind.Helpers

        public ConnectionViewModel GetOrSetConnectionViewModel(MindNode source, MindNode sink, ConnectionViewModel connector = null)
        {
+            if (source == null || sink == null)
+                return null;
+
            if (connector == null)
            {
                connector = new ConnectionViewModel(source.Root, source.FirstConnector, sink.FirstConnector, DrawMode.ConnectingLineStraight, RouterMode.RouterOrthogonal);
--- a/AIStudio.Wpf.Mind/Models/MindNodeDesignerItem.cs
+++ b/AIStudio.Wpf.Mind/Models/MindNodeDesignerItem.cs
@@ -124,12 +124,12 @@ namespace AIStudio.Wpf.Mind.Models

        public LinkInfoItem(LinkInfo linkinfo) 
        {
-            Link = linkinfo.Link;
+            Url = linkinfo.Url;
            Text = linkinfo.Text;
        }

        [XmlAttribute]
-        public string Link
+        public string Url
        {
            get;set;
        }
--- a/AIStudio.Wpf.Mind/Models/MindNodeModel.cs
+++ b/AIStudio.Wpf.Mind/Models/MindNodeModel.cs
@@ -69,8 +69,8 @@ namespace AIStudio.Wpf.Flowchart.Models
            mindNode.Spacing = Spacing;
            mindNode.Offset = Offset;
            mindNode.IsExpanded = IsExpanded;
-            mindNode.LinkInfo = new LinkInfo(){Link = LinkInfoModel?.Link, Text= LinkInfoModel?.Text};
-            mindNode.ImageInfo = new ImageInfo() { Url= ImageInfoModel?.Url, Text= ImageInfoModel?.Text };
+            mindNode.LinkInfo = new LinkInfo(LinkInfoModel?.Url, LinkInfoModel?.Text);
+            mindNode.ImageInfo = new ImageInfo(ImageInfoModel?.Url, ImageInfoModel?.Text);
            mindNode.Remark = Remark;
            mindNode.Priority = Priority;
            mindNode.Rate = Rate;
@@ -95,11 +95,11 @@ namespace AIStudio.Wpf.Flowchart.Models

        public LinkInfoModel(LinkInfo linkinfo)
        {
-            Link = linkinfo.Link;
+            Url = linkinfo.Url;
            Text = linkinfo.Text;
        }

-        public string Link
+        public string Url
        {
            get; set;
        }
--- a/AIStudio.Wpf.Mind/Themes/MindNode.xaml
+++ b/AIStudio.Wpf.Mind/Themes/MindNode.xaml
@@ -70,7 +70,7 @@
                        <RowDefinition Height="*"/>
                    </Grid.RowDefinitions>
                    <Image x:Name="image" Margin="5" Stretch="Fill" Width="128" Height="128" 
-                           Visibility="{Binding ImageInfo.Url,FallbackValue='',Converter={StaticResource NullableToVisibilityConverter}}"  
+                           Visibility="{Binding ImageInfo,Converter={StaticResource NullableToVisibilityConverter}}"  
                           ToolTip="{Binding ImageInfo.Text}"
                           IsHitTestVisible="False"/>
                    <Grid Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center">
@@ -90,7 +90,7 @@
                                                  IsHitTestVisible="False"/>
                        <dd:TextControl Grid.Column="2" IsHitTestVisible="{Binding IsEditing}"/>
                        <controls:LinkControl Grid.Column="3" 
-                                                  Visibility="{Binding LinkInfo.Link,FallbackValue='',Converter={StaticResource NullableToVisibilityConverter}}" 
+                                                  Visibility="{Binding LinkInfo,Converter={StaticResource NullableToVisibilityConverter}}" 
                                                  Url="{Binding LinkInfo.Link}"
                                                  ToolTip="{Binding LinkInfo.Text}" />
                        <controls:RemarkControl Grid.Column="4"
--- a/AIStudio.Wpf.Mind/ViewModels/MindDiagramViewModel.cs
+++ b/AIStudio.Wpf.Mind/ViewModels/MindDiagramViewModel.cs
--- a/AIStudio.Wpf.Mind/ViewModels/MindNode.cs
+++ b/AIStudio.Wpf.Mind/ViewModels/MindNode.cs
@@ -87,8 +87,6 @@ namespace AIStudio.Wpf.Mind.ViewModels
            MoveBackCommand = (Root as IMindDiagramViewModel)?.MoveBackCommand;
            BuildMenuOptions();
            Tags = new ObservableCollection<string>();
-            LinkInfo = new LinkInfo();
-            ImageInfo = new ImageInfo();
        }

        protected override void InitNew()
@@ -103,14 +101,14 @@ namespace AIStudio.Wpf.Mind.ViewModels

            this.PropertyChanged -= this.Item_PropertyChanged;
            IsInnerConnector = true;
-            MindLayout.Appearance(this, MindThemeModel, initAppearance);          
+            MindLayout.Appearance(this, MindThemeModel, initAppearance);
            this.PropertyChanged += this.Item_PropertyChanged;
        }

        public void ThemeChange()
        {
            MindThemeHelper.ThemeChange(this, MindThemeModel);
-        }
+        }  

        protected override void LoadDesignerItemViewModel(SelectableItemBase designerbase)
        {
@@ -121,8 +119,8 @@ namespace AIStudio.Wpf.Mind.ViewModels
                Spacing = designer.Spacing;
                Offset = designer.Offset;
                IsExpanded = designer.IsExpanded;
-                LinkInfo = new LinkInfo() { Link = designer.LinkInfoItem?.Link, Text = designer.LinkInfoItem?.Text };
-                ImageInfo = new ImageInfo() { Url = designer.ImageInfoItem?.Url, Text = designer.ImageInfoItem?.Text };
+                LinkInfo = new LinkInfo(designer.LinkInfoItem?.Url, designer.LinkInfoItem?.Text);
+                ImageInfo = new ImageInfo(designer.ImageInfoItem?.Url, designer.ImageInfoItem?.Text);
                Remark = designer.Remark;
                Priority = designer.Priority;
                Rate = designer.Rate;
@@ -306,15 +304,7 @@ namespace AIStudio.Wpf.Mind.ViewModels
            }
            set
            {
-                if (_linkInfo != null)
-                {
-                    _linkInfo.PropertyChanged -= Item_PropertyChanged;
-                }
                SetProperty(ref _linkInfo, value);
-                if (_linkInfo != null)
-                {
-                    _linkInfo.PropertyChanged += Item_PropertyChanged; ;
-                }
            }
        }

@@ -327,15 +317,7 @@ namespace AIStudio.Wpf.Mind.ViewModels
            }
            set
            {
-                if (_imageInfo != null)
-                {
-                    _imageInfo.PropertyChanged -= Item_PropertyChanged;
-                }
                SetProperty(ref _imageInfo, value);
-                if (_imageInfo != null)
-                {
-                    _imageInfo.PropertyChanged += Item_PropertyChanged;
-                }
            }
        }

@@ -491,52 +473,35 @@ namespace AIStudio.Wpf.Mind.ViewModels
        #endregion

        #region 操作  
-        public void AddChild(MindNode item, int index = -1)
+        public void AddTo(MindNode parent, int index = -1, bool isSelected = true)
        {
+            //parent为空，为根节点
            if (index >= 0)
            {
-                this.Children.Insert(index, item);
+                parent?.Children.Insert(index, this);
            }
            else
            {
-                this.Children.Add(item);
+                parent?.Children.Add(this);
            }
-            item.Parent = this;
-            item.ParentId = this.Id;
-            item.InitLayout(true);//因为节点的层级不同的样式，所以需要Parent确定后才能初始化
+            this.Parent = parent;
+            this.ParentId = parent?.Id ?? Guid.Empty;
+            this.InitLayout(true);//因为节点的层级不同的样式，所以需要Parent确定后才能初始化
+            this.InitConnectLayout();

-            ConnectionViewModel connector = MindLayout?.GetOrSetConnectionViewModel(this, item);
-            Root?.Add(new SelectableDesignerItemViewModelBase[] { item, connector });
-            connector.ZIndex = -1;
-            connector.IsSelected = false;
-            item.IsSelected = false;
-            this.IsSelected = true;
-        }
+            Root?.Add(this);

-        public void RemoveChild(MindNode item, bool removeall = false)
-        {
-            item.PropertyChanged -= Item_PropertyChanged;
-
-            this.Children.Remove(item);
-
-            var connectors = Root?.Items.OfType<ConnectionViewModel>().Where(p => p.SinkConnectorInfoFully?.DataItem == item).ToList();
-
-            Root?.Remove(item);
-            Root?.Remove(connectors);
-
-            if (removeall)
+            if (isSelected)
            {
-                if (item.Children?.Count > 0)
+                if (parent != null)
                {
-                    foreach (var child in item.Children.ToList())
-                    {
-                        item.RemoveChild(child, removeall);
-                    }
+                    parent.IsSelected = false;
                }
+                this.IsSelected = true;
            }
        }

-        public void Remove(bool removeall = false)
+        public void RemoveFrom()
        {
            this.PropertyChanged -= Item_PropertyChanged;
            if (this.ParentNode != null)
@@ -548,16 +513,16 @@ namespace AIStudio.Wpf.Mind.ViewModels
            Root?.Remove(this);
            Root?.Remove(connectors);

-            if (removeall)
-            {
-                if (this.Children?.Count > 0)
-                {
-                    foreach (var child in this.Children.ToList())
-                    {
-                        child.Remove(removeall);
-                    }
-                }
-            }
+            //if (removeall)
+            //{
+            //    if (this.Children?.Count > 0)
+            //    {
+            //        foreach (var child in this.Children.ToList())
+            //        {
+            //            child.RemoveFrom(removeall);
+            //        }
+            //    }
+            //}
        }

        public void InitConnectLayout()
@@ -570,16 +535,15 @@ namespace AIStudio.Wpf.Mind.ViewModels
            else if (ParentNode != null)
            {
                connector = MindLayout?.GetOrSetConnectionViewModel(ParentNode, this, null);
-                Root?.Add(new SelectableDesignerItemViewModelBase[] {  connector });
+                Root?.Add(new SelectableDesignerItemViewModelBase[] { connector });
                connector.ZIndex = -1;
                connector.IsSelected = false;
            }
        }
        #endregion
-
        private void Item_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
-            if (GetLevel1Node()?.LayoutUpdating == true) return; 
+            if (GetLevel1Node()?.LayoutUpdating == true) return;

            switch (e.PropertyName)
            {
@@ -601,7 +565,6 @@ namespace AIStudio.Wpf.Mind.ViewModels
                case nameof(Rate):
                case nameof(Priority):
                case nameof(Remark):
-                case nameof(LinkInfo.Link):
                    {
                        if (e is ValuePropertyChangedEventArgs valuePropertyChangedEventArgs)
                        {
@@ -616,16 +579,31 @@ namespace AIStudio.Wpf.Mind.ViewModels
                        }
                        break;
                    }
-                case nameof(ImageInfo.Url):
+                case nameof(LinkInfo):
                    {
                        if (e is ValuePropertyChangedEventArgs valuePropertyChangedEventArgs)
                        {
-                            if (string.IsNullOrEmpty(valuePropertyChangedEventArgs.OldValue?.ToString()) && !string.IsNullOrEmpty(valuePropertyChangedEventArgs.NewValue?.ToString()))
+                            if (valuePropertyChangedEventArgs.OldValue == null && valuePropertyChangedEventArgs.NewValue != null)
+                            {
+                                ItemWidth += 24;
+                            }
+                            else if (valuePropertyChangedEventArgs.OldValue != null && valuePropertyChangedEventArgs.NewValue == null)
+                            {
+                                ItemWidth -= 24;
+                            }
+                        }
+                        break;
+                    }
+                case nameof(ImageInfo):
+                    {
+                        if (e is ValuePropertyChangedEventArgs valuePropertyChangedEventArgs)
+                        {
+                            if (valuePropertyChangedEventArgs.OldValue == null && valuePropertyChangedEventArgs.NewValue != null)
                            {
                                ItemWidth = Math.Max(ItemWidth, 160);
                                ItemHeight += 135;
                            }
-                            else if (!string.IsNullOrEmpty(valuePropertyChangedEventArgs.OldValue?.ToString()) && string.IsNullOrEmpty(valuePropertyChangedEventArgs.NewValue?.ToString()))
+                            else if (valuePropertyChangedEventArgs.OldValue != null && valuePropertyChangedEventArgs.NewValue == null)
                            {
                                ItemHeight -= 135;
                            }
@@ -664,6 +642,32 @@ namespace AIStudio.Wpf.Mind.ViewModels
            return node;
        }

+        public List<MindNode> GetParent()
+        {
+            var node = this;
+            List<MindNode> mindnode = new List<MindNode>();
+            while (node.ParentNode != null)
+            {
+                mindnode.Add(node.ParentNode);
+                node = node.ParentNode;
+            }
+            return mindnode;
+        }
+
+        public List<MindNode> GetChildren()
+        {
+            List<MindNode> mindnode = new List<MindNode>();
+            if (this.Children != null)
+            {
+                foreach (var child in this.Children)
+                {
+                    mindnode.Add(child);
+                    mindnode.AddRange(child.GetChildren());
+                }
+            }
+            return mindnode;
+        }
+
        protected void UpdateOffsetX(double oldvalue, double newvalue)
        {
            Offset += new VectorBase(newvalue - oldvalue, 0);
@@ -682,61 +686,63 @@ namespace AIStudio.Wpf.Mind.ViewModels
        #endregion
    }

-    public class LinkInfo : BindableBase
+    public class LinkInfo
    {
-        private string _link;
-        public string Link
+        public string Url
        {
-            get
-            {
-                return _link;
-            }
-            set
-            {
-                SetProperty(ref _link, value);
-            }
+            get; set;
        }

-        private string _text;
        public string Text
        {
-            get
-            {
-                return _text;
-            }
-            set
-            {
-                SetProperty(ref _text, value);
-            }
+            get; set;
+        }
+
+        public LinkInfo()
+        {
+
+        }
+
+        public LinkInfo(string url, string text)
+        {
+            Url = url;
+            Text = text;
+        }
+
+        public LinkInfo(LinkInfo info)
+        {
+            Url = info?.Url;
+            Text = info?.Text;
        }
    }

-    public class ImageInfo : BindableBase
+    public class ImageInfo
    {
-        private string _url;
        public string Url
        {
-            get
-            {
-                return _url;
-            }
-            set
-            {
-                SetProperty(ref _url, value);
-            }
+            get; set;
        }

-        private string _text;
        public string Text
        {
-            get
-            {
-                return _text;
-            }
-            set
-            {
-                SetProperty(ref _text, value);
-            }
+            get; set;
+        }
+
+        public ImageInfo()
+        {
+
+        }
+
+        public ImageInfo(string url, string text)
+        {
+            Url = url;
+            Text = text;
+        }
+
+        public ImageInfo(ImageInfo info)
+        {
+            Url = info?.Url;
+            Text = info?.Text;
        }
    }
 }