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Szmedi.RvKits/RvScript/DocumentViewModel.cs
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265
Szmedi.RvKits/RvScript/DocumentViewModel.cs
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using ICSharpCode.AvalonEdit.Document;
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using ICSharpCode.AvalonEdit.Utils;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.Formatting;
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using Microsoft.CodeAnalysis.Text;
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using TextDocument = ICSharpCode.AvalonEdit.Document.TextDocument;
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namespace Szmedi.RvKits.RvScript
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{
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/// <summary>
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/// 每个脚本文件视图的ViewModel
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/// </summary>
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public partial class DocumentViewModel : ObservableObject /*ObservableRecipient, IRecipient<string>*/
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{
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[ObservableProperty]
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private bool _isReadOnly;
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RoslynEditorViewModel RoslynEditorViewModel { get; }
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public DocumentViewModel(RoslynEditorViewModel roslynEditorViewModel, string FilePath)
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{
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RoslynEditorViewModel = roslynEditorViewModel;
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this.FilePath = FilePath;
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Title = FileName;
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}
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// ...
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public DocumentViewModel(RoslynEditorViewModel roslynEditorViewModel)
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{
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//WeakReferenceMessenger.Default.Register<DocumentViewModel, string, string>(this, "RunScript", (r, m) => r.Receive(m));
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RoslynEditorViewModel = roslynEditorViewModel;
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IsDirty = true;
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Title = FileName;
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}
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internal void Initialize(DocumentId id)
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{
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Id = id;
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if (Document != null && Document.TextLength > 0)
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{
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var doc = RoslynEditorViewModel.Host.GetDocument(id);
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if (doc != null)
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{
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RoslynEditorViewModel.Host.UpdateDocument(doc.WithText(SourceText.From(Document.Text)));
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IsDirty = false;
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}
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}
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}
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internal void OnTextChanged(object sender, EventArgs e)
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{
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IsDirty = true;
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}
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public DocumentId Id { get; private set; }
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[ObservableProperty]
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private TextDocument _document = null;
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[ObservableProperty]
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private string title = null;
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[ObservableProperty]
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[NotifyPropertyChangedFor(nameof(FileName))]
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[NotifyPropertyChangedFor(nameof(Title))]
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private bool isDirty = false;
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private string _isReadOnlyReason = string.Empty;
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public string IsReadOnlyReason
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{
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get
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{
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return _isReadOnlyReason;
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}
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protected set
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{
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SetProperty(ref _isReadOnlyReason, value);
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}
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}
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private string _filePath = null;
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public string FilePath
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{
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get { return _filePath; }
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set
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{
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if (_filePath != value)
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{
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_filePath = value;
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OnPropertyChanged(nameof(FilePath));
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OnPropertyChanged(nameof(FileName));
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OnPropertyChanged(nameof(Title));
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if (File.Exists(_filePath))
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{
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Document = new TextDocument();
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IsDirty = false;
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IsReadOnly = false;
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// Check file attributes and set to read-only if file attributes indicate that
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if ((File.GetAttributes(_filePath) & FileAttributes.ReadOnly) != 0)
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{
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IsReadOnly = true;
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IsReadOnlyReason = "无法编辑该文件，另一个进程正在写入\n" +
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"如果你想编辑它，请修改访问许可或另存文件到其他位置。";
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}
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using (FileStream fs = new FileStream(_filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
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{
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using (StreamReader reader = FileReader.OpenStream(fs, System.Text.Encoding.UTF8))
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{
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Document = new TextDocument(reader.ReadToEnd());
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}
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}
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ContentId = _filePath;
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}
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}
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}
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}
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public string FileName
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{
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get
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{
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if (FilePath == null)
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return "未命名脚本" + (IsDirty ? "*" : "");
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return Path.GetFileName(FilePath) + (IsDirty ? "*" : "");
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}
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}
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[ObservableProperty]
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private string _contentId = null;
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[ObservableProperty]
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private bool _isActive = false;
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[ObservableProperty]
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private bool _isSelected = false;
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public string Text { get; set; }
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public bool HasError { get; private set; }
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//private static MethodInfo HasSubmissionResult { get; } =
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// typeof(Compilation).GetMethod(nameof(HasSubmissionResult), BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
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[RelayCommand(CanExecute = nameof(IsDirty))]
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private void Save()
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{
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Text = GetCode();
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RoslynEditorViewModel.Save(this, false);
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}
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private string GetCode()
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{
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var document = RoslynEditorViewModel.Host.GetDocument(Id);
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if (document == null)
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return string.Empty;
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return document.GetTextAsync()?.Result.ToString();
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}
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[RelayCommand(CanExecute = nameof(IsDirty))]
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private void SaveAs()
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{
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Text = GetCode();
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RoslynEditorViewModel.Save(this, true);
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}
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[RelayCommand]
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private void Close()
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{
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RoslynEditorViewModel.Close(this);
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}
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[RelayCommand]
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private void Run()
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{
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Text = GetCode();
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RoslynEditorViewModel.Run(this);
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}
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[RelayCommand]
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private void Format()
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{
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var document = RoslynEditorViewModel.Host.GetDocument(Id);
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var formattedDocument = Formatter.FormatAsync(document).Result;
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RoslynEditorViewModel.Host.UpdateDocument(formattedDocument);
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}
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[RelayCommand]
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private void Comment()
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{
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if (RoslynEditorViewModel.CodeEditor == null)
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{
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return;
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}
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var roslynEditor = RoslynEditorViewModel.CodeEditor;
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var document = roslynEditor.Document;
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var startLine = document.GetLineByOffset(roslynEditor.SelectionStart);
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var endLine = document.GetLineByOffset(roslynEditor.SelectionStart + roslynEditor.SelectionLength);
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document.BeginUpdate();
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var line = startLine;
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while (line != null && line.LineNumber <= endLine.LineNumber)
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{
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var whitespace = TextUtilities.GetLeadingWhitespace(document, line);
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if (line.Length > whitespace.Length)
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{
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var text = document.GetText(whitespace) + "//";
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document.Replace(whitespace.Offset, whitespace.Length, text, OffsetChangeMappingType.RemoveAndInsert);
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}
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line = line.NextLine;
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}
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document.EndUpdate();
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}
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[RelayCommand]
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private void UnComment()
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{
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if (RoslynEditorViewModel.CodeEditor == null)
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{
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return;
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}
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var roslynEditor = RoslynEditorViewModel.CodeEditor;
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var document = roslynEditor.Document;
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var startLine = document.GetLineByOffset(roslynEditor.SelectionStart);
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var endLine = document.GetLineByOffset(roslynEditor.SelectionStart + roslynEditor.SelectionLength);
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document.BeginUpdate();
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var line = startLine;
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while (line != null && line.LineNumber <= endLine.LineNumber)
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{
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var whitespace = TextUtilities.GetLeadingWhitespace(document, line);
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if (line.Length > whitespace.Length + 2)
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{
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var text = document.GetText(whitespace.EndOffset, 2);
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if (text == "//")
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document.Remove(whitespace.EndOffset, 2);
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}
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line = line.NextLine;
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}
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document.EndUpdate();
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}
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//public void Receive(string message)
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//{
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// this.Text = message;
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//}
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}
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}
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