Kepler-Release/Venus/Venus_MainPages/ViewModels/SequenceViewModel.cs

using Aitex.Core.RT.Log;
using Aitex.Core.UI.View.Common;
using Caliburn.Micro.Core;
using MECF.Framework.Common.DataCenter;
using MECF.Framework.Common.Equipment;
using Microsoft.VisualBasic;
using Microsoft.Win32;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using RecipeEditorLib.DGExtension.CustomColumn;
using RecipeEditorLib.RecipeModel.Params;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml;
using Venus_Core;
using Venus_MainPages.PMs;
using Venus_MainPages.Sequence;
using Venus_MainPages.Views;
using WPF.Themes.UserControls;

namespace Venus_MainPages.ViewModels
{
    internal class SequenceViewModel : BindableBase
    {
        #region 私有字段
        //private IUiSequenceManager m_uiSequenceManager = new UiSequenceManager();
        private SequenceView m_SequenceView;
        private bool m_IsPageLoad = true;
        private SequenceData m_CurrentSequence;
        private SequenceColumnBuilder columnBuilder = new SequenceColumnBuilder();
        private SequenceDataProvider provider = new SequenceDataProvider(new UiSequenceManager());
        #endregion

        #region 命令
        private DelegateCommand<Object> m_LoadedCommand;
        public DelegateCommand<Object> LoadedCommand =>
            m_LoadedCommand ?? (m_LoadedCommand = new DelegateCommand<Object>(OnLoaded));
        private DelegateCommand m_AddStepCommand;
        public DelegateCommand AddStepCommand =>
            m_AddStepCommand ?? (m_AddStepCommand = new DelegateCommand(AddStep));

        private DelegateCommand m_InsertCommand;
        public DelegateCommand InsertCommand =>
            m_InsertCommand ?? (m_InsertCommand = new DelegateCommand(InsertStep));

        private DelegateCommand m_CopyCommand;
        public DelegateCommand CopyCommand =>
            m_CopyCommand ?? (m_CopyCommand = new DelegateCommand(CopyStep));

        private DelegateCommand m_PasteCommand;
        public DelegateCommand PasteCommand =>
            m_PasteCommand ?? (m_PasteCommand = new DelegateCommand(PasteStep));

        private DelegateCommand m_DeleteStepCommand;
        public DelegateCommand DeleteStepCommand =>
            m_DeleteStepCommand ?? (m_DeleteStepCommand = new DelegateCommand(DeleteStep));

        private DelegateCommand m_ReloadSequenceCommand;
        public DelegateCommand ReloadSequenceCommand =>
            m_ReloadSequenceCommand ?? (m_ReloadSequenceCommand = new DelegateCommand(ReloadSequence));

        private DelegateCommand m_SaveSequenceCommand;
        public DelegateCommand SaveSequenceCommand =>
            m_SaveSequenceCommand ?? (m_SaveSequenceCommand = new DelegateCommand(SaveSequence));

        private DelegateCommand<object> m_SelectRecipeCommand;
        public DelegateCommand<object> SelectRecipeCommand =>
            m_SelectRecipeCommand ?? (m_SelectRecipeCommand = new DelegateCommand<object>(SelectRecipe));

        private DelegateCommand<Object> m_TreeSelectChangedCommand;
        public DelegateCommand<Object> TreeSelectChangedCommand =>
            m_TreeSelectChangedCommand ?? (m_TreeSelectChangedCommand = new DelegateCommand<Object>(TreeSelectChanged));

        private DelegateCommand<MouseButtonEventArgs> m_TreeRightMouseDownCommand;
        public DelegateCommand<MouseButtonEventArgs> TreeRightMouseDownCommand =>
            m_TreeRightMouseDownCommand ?? (m_TreeRightMouseDownCommand = new DelegateCommand<MouseButtonEventArgs>(TreeRightMouseDown));

        private DelegateCommand m_NewSequenceCommand;
        public DelegateCommand NewSequenceCommand =>
            m_NewSequenceCommand ?? (m_NewSequenceCommand = new DelegateCommand(NewSequence));

        private DelegateCommand m_RenameCommand;
        public DelegateCommand RenameCommand =>
            m_RenameCommand ?? (m_RenameCommand = new DelegateCommand(RenameSequence));

        private DelegateCommand m_DeleteCommand;
        public DelegateCommand DeleteSequenceCommand =>
            m_DeleteCommand ?? (m_DeleteCommand = new DelegateCommand(DeleteSequence));

        private DelegateCommand m_SaveAsCommand;
        public DelegateCommand SaveAsCommand =>
            m_SaveAsCommand ?? (m_SaveAsCommand = new DelegateCommand(SaveAsSequence));

        #endregion

        #region 属性
        ObservableCollection<FileNode> m_Files = new ObservableCollection<FileNode>();
        public ObservableCollection<FileNode> Files
        {
            get { return m_Files; }
            set { SetProperty(ref m_Files, value); }
        }

        private string m_SequenceName = String.Empty;
        public string SequenceName
        {
            get { return m_SequenceName; }
            set
            {
                if (value == m_SequenceName)
                    return;

                SetProperty(ref m_SequenceName, value);
                ApplyFilter();
            }
        }

        public SequenceData CurrentSequence
        {
            get { return m_CurrentSequence; }
            set { SetProperty(ref m_CurrentSequence, value); }
        }
        public FileNode CurrentFileNode { get; private set; }
        public ObservableCollection<EditorDataGridTemplateColumnBase> Columns { get; private set; }
        #endregion

        #region page_load
        private void OnLoaded(Object sequenceView)
        {
            if (m_IsPageLoad)
            {
                m_IsPageLoad = false;
                GetFiles(provider.GetSequenceNameList());
                this.CurrentSequence = new SequenceData();
                this.Columns = this.columnBuilder.Build();
                SequenceColumnBuilder.ApplyTemplate((UserControl)sequenceView, this.Columns);
                m_SequenceView = sequenceView as SequenceView;

                this.Columns.Apply((c) =>
                {
                    c.Header = c;
                    m_SequenceView.dgCustom.Columns.Add(c);
                });

                m_SequenceView.dgCustom.ItemsSource = CurrentSequence.Steps;
                if (Files.Count > 0)
                {
                    this.CurrentFileNode = this.Files[0];
                    this.SelectDefault(this.CurrentFileNode);
                }
            }

        }

        private void GetFiles(List<string> names)
        {
            Files = new ObservableCollection<FileNode>(RecipeSequenceTreeBuilder.GetFiles("", names));
        }
        #endregion

        #region tree action
        public void NewSequence()
        {
            InputFileNameDialogView dialog = new InputFileNameDialogView("Input New Sequence Name")
            {
                Owner = Application.Current.MainWindow
            };
            if (dialog.ShowDialog() == true)
            {
                string fullpath = dialog.FileName;
                if (this.CurrentFileNode.IsFile)
                    fullpath = (string.IsNullOrEmpty(this.CurrentFileNode.Parent.FullPath) ? dialog.FileName : this.CurrentFileNode.Parent.FullPath + "\\" + dialog.FileName);
                else
                    fullpath = (string.IsNullOrEmpty(this.CurrentFileNode.FullPath) ? dialog.FileName : this.CurrentFileNode.FullPath + "\\" + dialog.FileName);

                if (fullpath.Length > 25)
                {
                    WPFMessageBox.ShowError("SequenceName Length can not over 25");
                    return;
                }
                if (string.IsNullOrEmpty(fullpath))
                {
                    MessageBox.Show("SequenceName cannot be null or empty!");
                    return;
                }
                if (this.IsExist(fullpath))
                {
                    MessageBox.Show("Sequence already existed!");
                }
                else
                {
                    SequenceData sequence = new SequenceData();
                    sequence.Name = fullpath;
                    sequence.Creator = "Admin";
                    sequence.CreateTime = DateTime.Now;
                    sequence.Revisor = sequence.Creator;
                    sequence.ReviseTime = DateTime.Now;
                    sequence.Description = string.Empty;

                    if (this.Save(sequence))
                    {
                        this.CurrentSequence.Name = sequence.Name;
                        this.CurrentSequence.Creator = sequence.Creator;
                        this.CurrentSequence.CreateTime = sequence.CreateTime;
                        this.CurrentSequence.Revisor = sequence.Revisor;
                        this.CurrentSequence.ReviseTime = sequence.ReviseTime;
                        this.CurrentSequence.Description = sequence.Description;
                        this.CurrentSequence.Steps.Clear();

                        FileNode file = new FileNode();
                        file.Name = dialog.FileName;
                        file.FullPath = this.CurrentSequence.Name;
                        file.IsFile = true;
                        file.Parent = this.CurrentFileNode.IsFile ? this.CurrentFileNode.Parent : this.CurrentFileNode;
                        if (this.CurrentFileNode.IsFile)
                            this.CurrentFileNode.Parent.Files.Insert(this.FindInsertPosition(this.CurrentFileNode.Parent.Files), file);
                        else
                            this.CurrentFileNode.Files.Insert(this.FindInsertPosition(this.CurrentFileNode.Files), file);
                    }
                }
            }
        }
        public void RenameSequence()
        {
            if (this.CurrentFileNode.IsFile)
            {
                InputFileNameDialogView dialog = new InputFileNameDialogView("Rename Sequence")
                {
                    Owner = Application.Current.MainWindow
                };
                dialog.FileName = this.CurrentFileNode.Name;
                if (dialog.ShowDialog() == true)
                {
                    string fullpath = this.CurrentFileNode.Parent.FullPath == "" ? dialog.FileName : this.CurrentFileNode.Parent.FullPath + "\\" + dialog.FileName;
                    if (fullpath.Length > 25)
                    {
                        WPFMessageBox.ShowError("SequenceName Length can not over 25");
                        return;
                    }
                    if (string.IsNullOrEmpty(fullpath))
                    {
                        MessageBox.Show("SequenceName cannot be null or empty!");
                        return;
                    }
                    if (this.IsExist(fullpath))
                    {
                        MessageBox.Show("Sequence already existed!");
                    }
                    else
                    {
                        this.CurrentSequence.Revisor = "Admin";
                        this.CurrentSequence.ReviseTime = DateTime.Now;
                        if (this.provider.Rename(this.CurrentSequence.Name, fullpath))
                        {
                            this.CurrentFileNode.Name = dialog.FileName;
                            this.CurrentFileNode.FullPath = fullpath;
                            this.CurrentSequence.Name = fullpath;
                        }
                        else
                            MessageBox.Show("Rename failed!");
                    }
                }
            }
        }
        public void DeleteSequence()
        {
            if (this.CurrentFileNode.IsFile)
            {
                if (WPFMessageBox.ShowQuestion($"Do you want to delete this {this.CurrentSequence.Name}?", "删除后无法恢复!!!") == MessageBoxResult.Yes)
                {
                    if (this.provider.Delete(this.CurrentSequence.Name))
                    {
                        this.CurrentFileNode.Parent.Files.Remove(this.CurrentFileNode);
                    }
                }
            }
        }
        public void SaveAsSequence()
        {
            if (this.CurrentFileNode.IsFile)
            {
                InputFileNameDialogView dialog = new InputFileNameDialogView("Input New Sequence Name")
                {
                    Owner = Application.Current.MainWindow
                };
                if (dialog.ShowDialog() == true)
                {
                    string fullpath = (this.CurrentFileNode.Parent.FullPath == "" ? dialog.FileName : this.CurrentFileNode.Parent.FullPath + "\\" + dialog.FileName);

                    if (string.IsNullOrEmpty(fullpath))
                    {
                        MessageBox.Show("SequenceName cannot be null or empty!");
                        return;
                    }
                    if (this.IsExist(fullpath))
                    {
                        MessageBox.Show("Sequence already existed!");
                    }
                    else
                    {
                        this.CurrentSequence.Revisor = "Admin";
                        this.CurrentSequence.ReviseTime = DateTime.Now;
                        string tempname = this.CurrentSequence.Name;
                        this.CurrentSequence.Name = fullpath;
                        if (this.provider.SaveAs(fullpath, this.CurrentSequence))
                        {
                            FileNode node = new FileNode();
                            node.Parent = this.CurrentFileNode.Parent;
                            node.Name = dialog.FileName;
                            node.FullPath = fullpath;
                            node.IsFile = true;
                            this.CurrentFileNode.Parent.Files.Add(node);
                        }
                        else
                        {
                            this.CurrentSequence.Name = tempname;
                            MessageBox.Show("SaveAs failed!");
                        }
                    }
                }
            }
        }
        public void TreeSelectChanged(object selectItem)
        {
            FileNode file = (FileNode)selectItem;
            if (file != null && file.IsFile)
            {
                this.LoadData(file.FullPath);
                this.CurrentFileNode = file;
            }
            else
            {
                this.ClearData();
            }
        }

        private TreeViewItem GetParentObjectEx<TreeViewItem>(DependencyObject obj) where TreeViewItem : FrameworkElement
        {
            DependencyObject parent = VisualTreeHelper.GetParent(obj);
            while (parent != null)
            {
                if (parent is TreeViewItem)
                {
                    return (TreeViewItem)parent;
                }
                parent = VisualTreeHelper.GetParent(parent);
            }
            return null;
        }
        public void TreeRightMouseDown(MouseButtonEventArgs e)
        {
            if (e != null)
            {
                var item = GetParentObjectEx<TreeViewItem>(e.OriginalSource as DependencyObject) as TreeViewItem;
                if (item != null)
                {
                    item.Focus();
                }
            }
        }
        #endregion

        #region sequence action

        public void AddStep()
        {
            this.CurrentSequence.Steps.Add(CurrentSequence.CreateStep(this.Columns));
            int index = 1;
            foreach (ObservableCollection<Param> parameters in this.CurrentSequence.Steps)
            {
                (parameters[0] as StepParam).Value = index.ToString();
                index++;
            }
        }
        public void InsertStep()
        {
            int index = -1;
            bool found = false;
            for (var i = 0; i < this.CurrentSequence.Steps.Count; i++)
            {
                if (this.CurrentSequence.Steps[i][0] is StepParam && ((StepParam)this.CurrentSequence.Steps[i][0]).Checked)
                {
                    index = i;
                    found = true;
                    break;
                }
            }
            if (found)
            {
                this.CurrentSequence.Steps.Insert(index, this.CurrentSequence.CreateStep(this.Columns));
                index = 1;
                foreach (ObservableCollection<Param> parameters in this.CurrentSequence.Steps)
                {
                    (parameters[0] as StepParam).Value = index.ToString();
                    index++;
                }
            }
        }
        private ObservableCollection<ObservableCollection<Param>> copySteps = new ObservableCollection<ObservableCollection<Param>>();
        public void CopyStep()
        {
            this.copySteps.Clear();

            for (var i = 0; i < this.CurrentSequence.Steps.Count; i++)
            {
                if (this.CurrentSequence.Steps[i][0] is StepParam && ((StepParam)this.CurrentSequence.Steps[i][0]).Checked)
                {
                    this.copySteps.Add(this.CurrentSequence.CloneStep(this.Columns, this.CurrentSequence.Steps[i]));
                }
            }
        }
        public void PasteStep()
        {
            if (this.copySteps.Count > 0)
            {
                if (this.CurrentSequence.Steps.Count > 0)
                {
                    for (var i = 0; i < this.CurrentSequence.Steps.Count; i++)
                    {
                        if (this.CurrentSequence.Steps[i][0] is StepParam && ((StepParam)this.CurrentSequence.Steps[i][0]).Checked)
                        {
                            for (var copyindex = 0; copyindex < this.copySteps.Count; copyindex++)
                            {
                                this.CurrentSequence.Steps.Insert(i, this.CurrentSequence.CloneStep(this.Columns, this.copySteps[copyindex]));
                                i++;
                            }
                            break;
                        }
                    }
                }
                else
                {
                    for (var copyindex = 0; copyindex < this.copySteps.Count; copyindex++)
                    {
                        this.CurrentSequence.Steps.Insert(copyindex, this.CurrentSequence.CloneStep(this.Columns, this.copySteps[copyindex]));
                    }
                }
                SetStepIndex();
            }
        }
        public void DeleteStep()
        {
            List<ObservableCollection<Param>> steps = this.CurrentSequence.Steps.ToList();

            for (var i = 0; i < steps.Count; i++)
            {
                if (steps[i][0] is StepParam && ((StepParam)steps[i][0]).Checked)
                {
                    this.CurrentSequence.Steps.Remove(steps[i]);
                }
            }
            SetStepIndex();
        }
        public void ReloadSequence()
        {
            this.LoadData(this.CurrentSequence.Name);
        }
        public void SelectRecipe(object select)
        {
            PathFileParam param = (PathFileParam)select;
            RecipeSequenceSelectView dialog = new RecipeSequenceSelectView()
            {
                Owner = Application.Current.MainWindow
            };
            dialog.Title = "Select Recipe";
            var dataContext = new RecipeSequenceSelectViewModel();
            dialog.DataContext = dataContext;
            ObservableCollection<Param> parameters = param.Parent;
            PositionParam posParam = null;
            for (var index = 0; index < parameters.Count; index++)
            {
                if (parameters[index] is PositionParam)
                {
                    posParam = parameters[index] as PositionParam;
                    break;
                }
            }
            List<string> lstFiles = new List<string>();
            if (param.Name.Contains("Clean"))
            {
                lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[1] == "Clean").ToList();//m_uiSequenceManager.GetRecipesByPath($"{param.PrefixPath}");
            }
            else
            {
                if (param.Name.Contains("PMA"))
                {
                    lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[0] == "PMA" && x.Split('\\')[1] == "Process").ToList();
                }
                else if (param.Name.Contains("PMB"))
                {
                    lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[0] == "PMB" && x.Split('\\')[1] == "Process").ToList();
                }
                else if (param.Name.Contains("PMC"))
                {
                    lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[0] == "PMC" && x.Split('\\')[1] == "Process").ToList();
                }
                else if (param.Name.Contains("PMD"))
                {
                    lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[0] == "PMD" && x.Split('\\')[1] == "Process").ToList();
                }
                else
                {
                    lstFiles = provider.GetRecipesByPath($"{param.PrefixPath}").Where(x => x.Split('\\')[1] == "Process").ToList();
                }
            }

            dataContext.Files = new ObservableCollection<FileNode>(RecipeSequenceTreeBuilder.GetFiles("", lstFiles));

            if (dialog.ShowDialog() == true)
            {
                //param.Value = dialog.FullPath;
                //param.Value = $"{param.PrefixPath}\\" + dialog.FullPath;
                //param.FileName = param.Value;
                string path = dialog.FullPath;
                int index = path.LastIndexOf("\\");
                if (index > -1)
                {
                    param.FileName = path.Substring(index + 1);
                    param.Value = path.Substring(index + 1);
                }
                else
                {
                    param.FileName = path;
                    param.Value = path;
                }

                param.IsSaved = false;
            }
        }
        public void SaveSequence()
        {
            this.Save(this.CurrentSequence);
        }
        private void SetStepIndex()
        {
            int index = 1;
            foreach (ObservableCollection<Param> parameters in this.CurrentSequence.Steps)
            {
                (parameters[0] as StepParam).Value = index.ToString();
                index++;
            }
        }
        #endregion

        #region private

        private void ApplyFilter()
        {
            var sequenceList = provider.GetSequenceNameList() ?? new List<string>();
            GetFiles(sequenceList.Where(p => {
                return string.IsNullOrWhiteSpace(SequenceName) || p.IndexOf(SequenceName, StringComparison.OrdinalIgnoreCase) > -1;
            }).ToList());
        }

        private void ClearData()
        {
            this.CurrentSequence.Steps.Clear();
            this.CurrentSequence.Name = string.Empty;
            this.CurrentSequence.Description = string.Empty;
        }
        private bool Save(SequenceData seq)
        {
            bool result = false;
            if (string.IsNullOrEmpty(seq.Name))
            {
                MessageBox.Show("Sequence name can't be empty");
                return false;
            }

            string ruleCheckMessage = null;
            if (!ValidateSequenceRules(seq, ref ruleCheckMessage))
            {
                MessageBox.Show(string.Format($"{seq.Name} rules check failed, don't allow to save: {ruleCheckMessage}"));
                return false;
            }

            seq.Revisor = "Admin";
            seq.ReviseTime = DateTime.Now;
            result = this.provider.Save(seq);

            if (result)
            {
                foreach (ObservableCollection<Param> parameters in seq.Steps)
                {
                    parameters.Apply(param => param.IsSaved = true);
                }
            }
            else
                MessageBox.Show("Save failed!");
            return result;
        }

        private bool ValidateSequenceRules(SequenceData currentSequence, ref string ruleCheckMessage)
        {
            int preIndex = -1;
            for (var i = 0; i < currentSequence.Steps.Count; i++)
            {
                var stepInfo = currentSequence.Steps[i];
                if (string.IsNullOrEmpty((stepInfo[1] as PositionParam).Value))
                {
                    ruleCheckMessage = $"Step{(stepInfo[0] as StepParam).Value}, Position Is Empty";

                    return false;
                }
                if ((stepInfo[1] as PositionParam).Value == "LL")
                {
                    if (preIndex != -1 && (i - preIndex) == 1)
                    {
                        ruleCheckMessage = $"Step{(stepInfo[0] as StepParam).Value}, The LL is set around the pm ";
                        return false;
                    }
                    preIndex = i;
                }
            }
            return true;
        }

        private XmlAttribute CreateAttribute(XmlNode node, string attributeName, string value)
        {
            try
            {
                XmlDocument doc = node.OwnerDocument;
                XmlAttribute attr = null;
                attr = doc.CreateAttribute(attributeName);
                attr.Value = value;
                node.Attributes.SetNamedItem(attr);
                return attr;
            }
            catch (Exception err)
            {
                string desc = err.Message;
                return null;
            }
        }

        private void SelectDefault(FileNode node)
        {
            if (!node.IsFile)
            {
                if (node.Files.Count > 0)
                {
                    foreach (FileNode file in node.Files)
                    {
                        if (file.IsFile)
                        {
                            this.TreeSelectChanged(file);
                            //break;
                        }
                    }
                }
            }
        }

        public void TreeSelectChanged(FileNode file)
        {
            if (file != null && file.IsFile)
            {
                //if (this.IsChanged)
                //    if (MessageBox.Show("This sequence is changed,do you want to save it?", "", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
                //        this.Save(this.CurrentSequence);
                this.LoadData(file.FullPath);
                this.CurrentFileNode = file;
            }
            else
            {
                //this.ClearData();
                //this.editMode = EditMode.None;
                this.CurrentSequence.Steps.Clear();
            }
            //this.UpdateView();
        }

        private void LoadData(string newSeqName)
        {
            SequenceData Sequence = this.provider.GetSequenceByName(this.Columns, newSeqName);

            this.CurrentSequence.Name = Sequence.Name;
            this.CurrentSequence.Creator = Sequence.Creator;
            this.CurrentSequence.CreateTime = Sequence.CreateTime;
            this.CurrentSequence.Revisor = Sequence.Revisor;
            this.CurrentSequence.ReviseTime = Sequence.ReviseTime;
            this.CurrentSequence.Description = Sequence.Description;

            this.CurrentSequence.Steps.Clear();
            Sequence.Steps.ToList().ForEach(step =>
                this.CurrentSequence.Steps.Add(step));

            //int index = 1;
            //foreach (ObservableCollection<Param> parameters in this.CurrentSequence.Steps)
            //{
            //    (parameters[0] as StepParam).Value = index.ToString();
            //    index++;

            //    foreach (var para in parameters)
            //    {
            //        var pathFile = para as PathFileParam;
            //        if (pathFile != null)
            //        {
            //            pathFile.Value = pathFile.Value.Replace($"{pathFile.PrefixPath}\\", "");
            //        }
            //    }
            //}

            //this.IsSavedDesc = true;
            //this.NotifyOfPropertyChange("IsSavedDesc");

            //this.editMode = EditMode.Normal;
        }

        private bool IsExist(string sequencename)
        {
            bool existed = false;
            FileNode filenode = this.CurrentFileNode.IsFile ? this.CurrentFileNode.Parent : this.CurrentFileNode;
            for (var index = 0; index < filenode.Files.Count; index++)
            {
                if (filenode.Files[index].FullPath.ToLower() == sequencename.ToLower())
                {
                    existed = true;
                    break;
                }
            }
            return existed;
        }

        private int FindInsertPosition(ObservableCollection<FileNode> files)
        {
            int pos = -1;
            if (files.Count == 0)
                pos = 0;
            else
            {
                bool foundfolder = false;
                for (var index = 0; index < files.Count; index++)
                {
                    if (!files[index].IsFile)
                    {
                        foundfolder = true;
                        pos = index;
                        break;
                    }
                }

                if (!foundfolder)
                    pos = files.Count;
            }
            return pos;
        }
        #endregion
    }
}