aistudio-wpf-diagram/AIStudio.Wpf.Mind/ViewModels/MindDiagramViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Input;
using System.Windows.Media;
using AIStudio.Wpf.DiagramDesigner;
using AIStudio.Wpf.DiagramDesigner.Geometrys;
using AIStudio.Wpf.Mind.Helpers;

namespace AIStudio.Wpf.Mind.ViewModels
{
    public class MindDiagramViewModel : DiagramViewModel, IMindDiagramViewModel
    {
        #region
        private MindType _mindType = Mind.MindType.Mind;
        public MindType MindType
        {
            get
            {
                return _mindType;
            }
            set
            {
                if (SetProperty(ref _mindType, value))
                {
                    ExecutedChangeMindTypeCommand(value);
                }
            }
        }

        private MindThemeModel _mindThemeModel = MindThemeHelper.GetTheme("天空蓝");
        public MindThemeModel MindThemeModel
        {
            get
            {
                return _mindThemeModel;
            }
            set
            {
                SetProperty(ref _mindThemeModel, value);
            }
        }
        public List<MindNode> RootItems
        {
            get
            {
                return Items.OfType<MindNode>().Where(p => p.NodeLevel == 0).ToList();
            }
        }

        public MindNode MindSelectedItem
        {
            get
            {
                return SelectedItem as MindNode;
            }
        }
        #endregion

        #region 命令        
        private ICommand _addRootCommand;
        public ICommand AddRootCommand
        {
            get
            {
                return this._addRootCommand ?? (this._addRootCommand = new SimpleCommand(ExecuteEnable, this.ExecuteAddRootCommand));
            }
        }

        private ICommand _addParentCommand;
        public ICommand AddParentCommand
        {
            get
            {
                return this._addParentCommand ?? (this._addParentCommand = new SimpleCommand(MindLevelEnable, this.ExecuteAddParentCommand));
            }
        }

        private ICommand _addChildCommand;
        public ICommand AddChildCommand
        {
            get
            {
                return this._addChildCommand ?? (this._addChildCommand = new SimpleCommand(MindExecuteEnable, this.ExecuteAddChildCommand));
            }
        }

        private ICommand _AddPearCommand;
        public ICommand AddPearCommand
        {
            get
            {
                return this._AddPearCommand ?? (this._AddPearCommand = new SimpleCommand(MindLevelEnable, this.ExecuteAddPearCommand));
            }
        }

        private ICommand _moveForwardCommand;
        public ICommand MoveForwardCommand
        {
            get
            {
                return this._moveForwardCommand ?? (this._moveForwardCommand = new SimpleCommand(MindExecuteEnable, ExecuteMoveForwardCommand));
            }
        }

        private ICommand _moveBackCommand;
        public ICommand MoveBackCommand
        {
            get
            {
                return this._moveBackCommand ?? (this._moveBackCommand = new SimpleCommand(MindExecuteEnable, ExecuteMoveBackCommand));
            }
        }

        private ICommand _deleteCommand;
        public override ICommand DeleteCommand
        {
            get
            {
                return this._deleteCommand ?? (this._deleteCommand = new SimpleCommand(MindLevelEnable, ExecuteDeleteCommand));
            }
        }

        private ICommand _selectBrotherCommand;
        public ICommand SelectBrotherCommand
        {
            get
            {
                return this._selectBrotherCommand ?? (this._selectBrotherCommand = new SimpleCommand(MindLevelEnable, ExecuteSelectBrotherCommand));
            }
        }

        private ICommand _selectPearCommand;
        public ICommand SelectPearCommand
        {
            get
            {
                return this._selectPearCommand ?? (this._selectPearCommand = new SimpleCommand(MindLevelEnable, ExecuteSelectPearCommand));
            }
        }

        private ICommand _selectRouteCommand;
        public ICommand SelectRouteCommand
        {
            get
            {
                return this._selectRouteCommand ?? (this._selectRouteCommand = new SimpleCommand(MindLevelEnable, ExecuteSelectRouteCommand));
            }
        }

        private ICommand _selectChildCommand;
        public ICommand SelectChildCommand
        {
            get
            {
                return this._selectChildCommand ?? (this._selectChildCommand = new SimpleCommand(MindLevelEnable, ExecuteSelectChildCommand));
            }
        }

        private ICommand _addLinkCommand;
        public ICommand AddLinkCommand
        {
            get
            {
                return this._addLinkCommand ?? (this._addLinkCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddLinkCommand));
            }
        }

        private ICommand _removeLinkCommand;
        public ICommand RemoveLinkCommand
        {
            get
            {
                return this._removeLinkCommand ?? (this._removeLinkCommand = new SimpleCommand(MindExecuteEnable, ExecuteRemoveLinkCommand));
            }
        }

        private ICommand _addImageCommand;
        public ICommand AddImageCommand
        {
            get
            {
                return this._addImageCommand ?? (this._addImageCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddImageCommand));
            }
        }

        private ICommand _removeImageCommand;
        public ICommand RemoveImageCommand
        {
            get
            {
                return this._removeImageCommand ?? (this._removeImageCommand = new SimpleCommand(MindExecuteEnable, ExecuteRemoveImageCommand));
            }
        }

        private ICommand _addRemarkCommand;
        public ICommand AddRemarkCommand
        {
            get
            {
                return this._addRemarkCommand ?? (this._addRemarkCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddRemarkCommand));
            }
        }

        private ICommand _removeRemarkCommand;
        public ICommand RemoveRemarkCommand
        {
            get
            {
                return this._removeRemarkCommand ?? (this._removeRemarkCommand = new SimpleCommand(MindExecuteEnable, ExecuteRemoveRemarkCommand));
            }
        }

        private ICommand _addPriorityCommand;
        public ICommand AddPriorityCommand
        {
            get
            {
                return this._addPriorityCommand ?? (this._addPriorityCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddPriorityCommand));
            }
        }

        private ICommand _addRatioCommand;
        public ICommand AddRatioCommand
        {
            get
            {
                return this._addRatioCommand ?? (this._addRatioCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddRatioCommand));
            }
        }

        private ICommand _addTagCommand;
        public ICommand AddTagCommand
        {
            get
            {
                return this._addTagCommand ?? (this._addTagCommand = new SimpleCommand(MindExecuteEnable, ExecuteAddTagCommand));
            }
        }

        private ICommand _removeTagCommand;
        public ICommand RemoveTagCommand
        {
            get
            {
                return this._removeTagCommand ?? (this._removeTagCommand = new SimpleCommand(MindExecuteEnable, ExecuteRemoveTagCommand));
            }
        }

        private ICommand _changeMindTypeCommand;
        public ICommand ChangeMindTypeCommand
        {
            get
            {
                return this._changeMindTypeCommand ?? (this._changeMindTypeCommand = new SimpleCommand(ExecuteEnable, this.ExecutedChangeMindTypeCommand));
            }
        }

        private ICommand _changeMindThemeCommand;
        public ICommand ChangeMindThemeCommand
        {
            get
            {
                return this._changeMindThemeCommand ?? (this._changeMindThemeCommand = new SimpleCommand(ExecuteEnable, this.ExecutedChangeMindThemeCommand));
            }
        }

        private ICommand _clearThemeCommand;
        public ICommand ClearThemeCommand
        {
            get
            {
                return this._clearThemeCommand ?? (this._clearThemeCommand = new SimpleCommand(ExecuteEnable, this.ExecutedClearThemeCommand));
            }
        }

        private ICommand _copyThemeCommand;
        public ICommand CopyThemeCommand
        {
            get
            {
                return this._copyThemeCommand ?? (this._copyThemeCommand = new SimpleCommand(ExecuteEnable, this.ExecutedCopyThemeCommand));
            }
        }

        private ICommand _pasteThemeCommand;
        public ICommand PasteThemeCommand
        {
            get
            {
                return this._pasteThemeCommand ?? (this._pasteThemeCommand = new SimpleCommand(ExecuteEnable, this.ExecutedPasteThemeCommand));
            }
        }

        private ICommand _expand2LevelCommand;
        public ICommand Expand2LevelCommand
        {
            get
            {
                return this._expand2LevelCommand ?? (this._expand2LevelCommand = new SimpleCommand(ExecuteEnable, this.ExecutedExpand2LevelCommand));
            }
        }
        #endregion

        #region ctor和初始化
        public MindDiagramViewModel()
        {

        }

        public override void Init()
        {
            if (Items.Count == 0)
            {
                InitRootItem();
            }
            ResetChildren(RootItems);
            RootItems?.ForEach(p => p.LayoutUpdated());
            base.Init();
        }

        public void InitRootItem()
        {
            ClearSelectedItemsCommand.Execute(null);
            MindNode level1node = new MindNode(this) { Root = this, Id = Guid.NewGuid(), Text = "思维导图" };
            level1node.InitLayout(true);
            Items.Add(level1node);
            level1node.IsSelected = true;

            CenterMoveCommand.Execute(level1node);
        }

        protected override void ExecutedResetLayoutCommand(object obj)
        {
            foreach (var item in Items.OfType<MindNode>())
            {
                item.Offset = new DiagramDesigner.Geometrys.PointBase();
            }

            RootItems?.ForEach(p => p.LayoutUpdated());
        }

        private void ResetChildren(IEnumerable<MindNode> parents)
        {
            if (parents == null)
                return;

            foreach (var parent in parents)
            {
                parent.Children = new System.Collections.ObjectModel.ObservableCollection<MindNode>(Items.OfType<MindNode>().Where(p => p.ParentId == parent.Id));
                foreach (var item in Items.OfType<MindNode>().Where(p => p.ParentId == parent.Id).ToList())
                {
                    item.Parent = parent;
                    item.InitLayout(false);
                    item.InitConnectLayout();
                }
                ResetChildren(parent.Children);
            }
        }

        private List<MindNode> GetParent(MindNode node)
        {
            List<MindNode> mindnode = new List<MindNode>();
            while (node.ParentNode != null)
            {
                mindnode.Add(node.ParentNode);
                node = node.ParentNode;
            }
            return mindnode;
        }

        private List<MindNode> GetChildren(MindNode parent)
        {
            List<MindNode> mindnode = new List<MindNode>();
            if (parent.Children != null)
            {
                foreach (var child in parent.Children)
                {
                    mindnode.Add(child);
                    mindnode.AddRange(GetChildren(child));
                }
            }
            return mindnode;
        }
        #endregion

        #region 命令使能
        public bool MindExecuteEnable(object para)
        {
            if (ExecuteEnable(para) == false) return false;

            if (SelectedItem is MindNode) return true;

            return false;
        }

        private bool MindLevelEnable(object obj)
        {
            if (MindExecuteEnable(obj) == false) return false;

            return (SelectedItem as MindNode).NodeLevel != 0;
        }
        #endregion

        #region 新增,删除
        public void ExecuteAddRootCommand(object parameter)
        {
            InitRootItem();
        }

        public void ExecuteAddChildCommand(object parameter)
        {
            List<MindNode> items = new List<MindNode>();
            if (parameter is MindNode parent)
            {

            }
            else if (parameter is IEnumerable<MindNode> para)
            {
                parent = para.FirstOrDefault();//第一个固定为父节点
                items = para.Skip(1).ToList();
            }
            else
            {
                parent = SelectedItem as MindNode;
            }

            if (items?.Count == 0)
            {
                var node = new MindNode(this) { Text = $"分支主题{parent.Children.Count + 1}" };
                items.Add(node);
            }

            DoCommandManager.DoNewCommand(this.ToString(),
                () => {
                    foreach (var item in items)
                    {
                        parent.AddChild(item);
                    }
                    parent.LayoutUpdated();
                },
                () => {
                    foreach (var item in items)
                    {
                        parent.RemoveChild(item);
                    }
                    parent.LayoutUpdated();
                });

        }

        public void ExecuteAddParentCommand(object parameter)
        {
            List<MindNode> items = new List<MindNode>();
            if (parameter is MindNode node)
            {

            }
            else if (parameter is IEnumerable<MindNode> para)
            {
                node = para.FirstOrDefault();//第一个固定为父节点
                items = para.Skip(1).ToList();
            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node.Parent is MindNode parent)
            {
                if (items?.Count == 0)
                {
                    items.Add(new MindNode(this) { Text = $"分支主题{parent.Children.Count + 1}" });
                }

                DoCommandManager.DoNewCommand(this.ToString(),
                     () => {
                         int index = parent.Children.IndexOf(node);

                         parent.AddChild(items[0], index + 1);
                         parent.RemoveChild(node);
                         items[0].AddChild(node);

                         parent.LayoutUpdated();
                     },
                     () => {
                         int index = parent.Children.IndexOf(items[0]);
                         items[0].RemoveChild(node);
                         parent.AddChild(node, index + 1);

                         parent.LayoutUpdated();
                     });


            }
        }

        public void ExecuteAddPearCommand(object parameter)
        {
            List<MindNode> items = new List<MindNode>();
            if (parameter is MindNode pear)
            {

            }
            else if (parameter is IEnumerable<MindNode> para)
            {
                pear = para.FirstOrDefault();//第一个固定为同级节点
                items = para.Skip(1).ToList();
            }
            else
            {
                pear = SelectedItem as MindNode;
            }

            if (pear.Parent is MindNode parent)
            {
                if (items?.Count == 0)
                {
                    var node = new MindNode(this) { Text = $"分支主题{parent.Children.Count + 1}" };
                    items.Add(node);
                }

                DoCommandManager.DoNewCommand(this.ToString(),
                    () => {
                        int index = parent.Children.IndexOf(pear);
                        for (int i = 0; i < items.Count; i++)
                        {
                            parent.AddChild(items[i], index + i + 1);
                        }

                        parent.LayoutUpdated();
                    },
                    () => {
                        for (int i = 0; i < items.Count; i++)
                        {
                            parent.RemoveChild(items[i]);
                        }
                        parent.LayoutUpdated();
                    });

            }

        }

        private void ExecuteMoveBackCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node.Parent is MindNode parent)
            {
                DoCommandManager.DoNewCommand(this.ToString(),
                    () => {
                        int index = parent.Children.IndexOf(node);
                        if (index < parent.Children.Count - 1)
                        {
                            parent.RemoveChild(node);
                            parent.AddChild(node, index + 1);
                            parent.LayoutUpdated();
                        }
                    },
                    () => {
                        int index = parent.Children.IndexOf(node);
                        if (index > 0)
                        {
                            parent.RemoveChild(node);
                            parent.AddChild(node, index - 1);
                            parent.LayoutUpdated();
                        }
                    });
            }

        }

        private void ExecuteMoveForwardCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node.Parent is MindNode parent)
            {
                DoCommandManager.DoNewCommand(this.ToString(),
                  () => {
                      int index = parent.Children.IndexOf(node);
                      if (index > 0)
                      {
                          parent.RemoveChild(node);
                          parent.AddChild(node, index - 1);
                          parent.LayoutUpdated();
                      }
                  },
                  () => {
                      int index = parent.Children.IndexOf(node);
                      if (index < parent.Children.Count - 1)
                      {
                          parent.RemoveChild(node);
                          parent.AddChild(node, index + 1);
                          parent.LayoutUpdated();
                      }
                  });
            }

        }

        protected override bool Delete(object parameter)
        {
            List<MindNode> nodes = new List<MindNode>();
            List<SelectableDesignerItemViewModelBase> others = new List<SelectableDesignerItemViewModelBase>();
            if (parameter is MindNode node1)
            {
                nodes.Add(node1);
            }
            else if (parameter is IEnumerable<MindNode> para)
            {
                nodes.AddRange(para);
            }
            else
            {
                nodes.AddRange(SelectedItems.OfType<MindNode>());

                others = SelectedItems.Where(p => !(p is MindNode)).ToList();                
            }

            if (nodes.FirstOrDefault()?.IsEditing != false)
            {
                return false;
            }

            if (nodes.Any())
            {
                Dictionary<MindNode, int> indexs = nodes.ToDictionary(p => p, p => p.ParentNode != null ? p.ParentNode.Children.IndexOf(p) : 0);
                DoCommandManager.DoNewCommand(this.ToString(),
                  () => {
                      foreach (var node in nodes)
                      {
                          node.Remove(true);
                      }
                      RootItems.ForEach(p => p.LayoutUpdated());

                      if (others.Any())
                      {
                          base.Delete(others);
                      }
                  },
                  () => {
                      foreach (var node in nodes)
                      {
                          node.ParentNode.AddChild(node, indexs[node]);
                      }
                      RootItems.ForEach(p => p.LayoutUpdated());
                  });
                return true;
            }
            else
                return false;
        }
        #endregion

        #region 复制,粘贴
        protected override void FixOtherInfo(List<SelectableDesignerItemViewModelBase> items)
        {

            List<MindNode> parents = new List<MindNode>();
            foreach (var item in items.OfType<MindNode>())
            {
                //item.DesiredPosition = new PointBase(item.DesiredPosition?.X ?? 0 + OffsetX, item.DesiredPosition?.Y ?? 0 + OffsetY);
                var parent = Items.OfType<MindNode>().FirstOrDefault(p => p.Id == item.ParentId);
                if (parent != null && !items.Contains(parent))
                {
                    parents.Add(parent);
                }
                else if (item.ParentId == Guid.Empty)
                {
                    item.Offset = new PointBase(OffsetX, OffsetX);
                    parents.Add(item);
                    item.InitLayout(false);
                }
            }
            ResetChildren(parents);
            parents.ForEach(p => p.LayoutUpdated());
        }
        #endregion

        #region 附加信息
        private void ExecuteAddLinkCommand(object obj)
        {
            if (obj is object[] array && array.Length == 2)
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                    if (p.LinkInfo == null)
                        p.LinkInfo = new LinkInfo();

                    p.LinkInfo.Link = array[0]?.ToString();
                    p.LinkInfo.Text = array[1]?.ToString();

                });
            }
        }

        private void ExecuteRemoveLinkCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                if (p.LinkInfo != null)
                {
                    p.LinkInfo.Link = null;
                    p.LinkInfo.Text = null;
                }
            });
        }

        private void ExecuteAddImageCommand(object obj)
        {
            if (obj is object[] array && array.Length == 2)
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                    if (p.ImageInfo == null)
                        p.ImageInfo = new ImageInfo();

                    p.ImageInfo.Url = array[0]?.ToString();
                    p.ImageInfo.Text = array[1]?.ToString();

                });
            }
        }

        private void ExecuteRemoveImageCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                if (p.ImageInfo != null)
                {
                    p.ImageInfo.Url = null;
                    p.ImageInfo.Text = null;
                }
            });
        }

        private void ExecuteAddRemarkCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Remark = obj?.ToString());
        }

        private void ExecuteRemoveRemarkCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Remark = null);
        }

        private void ExecuteAddPriorityCommand(object obj)
        {
            if (double.TryParse(obj.ToString(), out var priority))
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Priority = priority);
            }
            else
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Priority = null);
            }
        }

        private void ExecuteAddRatioCommand(object obj)
        {
            if (double.TryParse(obj.ToString(), out var rate))
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Rate = rate);
            }
            else
            {
                SelectedItems.OfType<MindNode>().ToList().ForEach(p => p.Rate = null);
            }
        }

        private void ExecuteAddTagCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                p.Tags.Add(obj?.ToString());
            });
        }

        private void ExecuteRemoveTagCommand(object obj)
        {
            SelectedItems.OfType<MindNode>().ToList().ForEach(p => {
                p.Tags.Remove(obj?.ToString());
            });
        }
        #endregion

        #region 改变模式，主题
        private void ExecutedChangeMindTypeCommand(object obj)
        {
            if (obj is MindType mindType)
            {
                Items.OfType<MindNode>().ToList().ForEach(item => { item.InitLayout(true); });
                Items.OfType<MindNode>().ToList().ForEach(item => { item.InitConnectLayout(); });
                RootItems?.ForEach(p => p.LayoutUpdated());
            }
        }

        private void ExecutedChangeMindThemeCommand(object obj)
        {
            if (obj is string mindThemeModel)
            {
                MindThemeModel = MindThemeHelper.GetTheme(mindThemeModel);
                if (MindThemeModel?.Dark == true)
                {
                    PageBackground = Colors.Black;
                }
                else
                {
                    PageBackground = Colors.White;
                }
                Items.OfType<MindNode>().ToList().ForEach(item => { item.ThemeChange(); });
            }
        }

        private void ExecutedClearThemeCommand(object parameter)
        {
            List<MindNode> nodes = new List<MindNode>();
            if (parameter is MindNode node1)
            {
                nodes.Add(node1);
            }
            else if (parameter is IEnumerable<MindNode> para)
            {
                nodes.AddRange(para);
            }
            else
            {
                nodes.AddRange(SelectedItems.OfType<MindNode>());
            }

            if (nodes.Any())
            {
                DoCommandManager.DoNewCommand(this.ToString(),
                  () => {
                      foreach (var node in nodes)
                      {
                          node.ThemeChange();
                      }
                  },
                  () => {
                      //ToDo
                  });
            }
        }

        private MindNode _formatNode;
        private void ExecutedCopyThemeCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node != null)
            {
                _formatNode = node;
            }
        }

        private void ExecutedPasteThemeCommand(object parameter)
        {
            if (_formatNode != null)
            {
                List<MindNode> nodes = new List<MindNode>();
                if (parameter is MindNode node1)
                {
                    nodes.Add(node1);
                }
                else if (parameter is IEnumerable<MindNode> para)
                {
                    nodes.AddRange(para);
                }
                else
                {
                    nodes.AddRange(SelectedItems.OfType<MindNode>());
                }

                if (nodes.Any())
                {
                    DoCommandManager.DoNewCommand(this.ToString(),
                      () => {
                          foreach (var node in nodes)
                          {
                              CopyHelper.CopyPropertyValue(_formatNode.ColorViewModel, node.ColorViewModel);
                              CopyHelper.CopyPropertyValue(_formatNode.FontViewModel, node.FontViewModel);
                          }
                      },
                      () => {
                          //ToDo
                      });
                }

            }

        }
        #endregion

        #region 操作
        protected override void ExecuteCenterMoveCommand(object parameter)
        {
            var rootitem = MindSelectedItem?.RootNode;
            if (rootitem != null)
            {
                rootitem.Left = (PageSize.Width - rootitem.ItemWidth) / 2;
                rootitem.Top = (PageSize.Height - rootitem.ItemHeight) / 2;
                rootitem?.LayoutUpdated();
                FitViewModel = new FitViewModel() { BoundingRect = rootitem.GetBounds() };
            }
        }

        private void ExecutedExpand2LevelCommand(object obj)
        {
            int level = 0;
            int.TryParse(obj?.ToString(), out level);
            foreach (var item in Items.OfType<MindNode>())
            {
                if (item.NodeLevel == 0)
                {
                    continue;
                }
                else if (item.NodeLevel < level)
                {
                    item.IsExpanded = true;
                }
                else
                {
                    item.IsExpanded = false;
                }
            }
        }

        protected void ExecuteSelectBrotherCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node != null && node.ParentNode != null)
            {
                foreach (var child in node.ParentNode.Children)
                {
                    child.IsSelected = true;
                }
            }
        }

        protected void ExecuteSelectPearCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node != null)
            {
                foreach (var item in Items.OfType<MindNode>().Where(p => p.NodeLevel == node.NodeLevel))
                {
                    item.IsSelected = true;
                }
            }
        }

        protected void ExecuteSelectRouteCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node != null)
            {
                GetParent(node).ForEach(p => p.IsSelected = true);
            }
        }

        protected void ExecuteSelectChildCommand(object parameter)
        {
            if (parameter is MindNode node)
            {

            }
            else
            {
                node = SelectedItem as MindNode;
            }

            if (node != null)
            {
                GetChildren(node).ForEach(p => p.IsSelected = true);
            }
        }
        #endregion


    }
}