void DisplayTooltip(MouseEventArgs e)
        {
            int line = GetLineFromMousePosition(e);

            if (line == 0)
            {
                return;
            }

            int    startLine;
            bool   added;
            string oldText = changeWatcher.GetOldVersionFromLine(line, out startLine, out added);

            TextEditor editor = this.TextView.GetService <TextEditor>();

            markerService = this.TextView.GetService <ITextMarkerService>();

            LineChangeInfo zeroLineInfo = changeWatcher.GetChange(0);

            int  offset, length;
            bool hasNewVersion = changeWatcher.GetNewVersionFromLine(line, out offset, out length);

            if (line == 1 && zeroLineInfo.Change == ChangeType.Deleted)
            {
                int zeroStartLine; bool zeroAdded;
                startLine = 1;
                string deletedText = changeWatcher.GetOldVersionFromLine(0, out zeroStartLine, out zeroAdded);
                var    docLine     = editor.Document.GetLineByNumber(line);
                string newLine     = DocumentUtilities.GetLineTerminator(changeWatcher.CurrentDocument, 1);
                deletedText += newLine;
                deletedText += editor.Document.GetText(docLine.Offset, docLine.Length);
                if (oldText != null)
                {
                    oldText = deletedText + newLine + oldText;
                }
                else
                {
                    oldText = deletedText;
                }

                if (!hasNewVersion)
                {
                    offset        = 0;
                    length        = docLine.Length;
                    hasNewVersion = true;
                }
            }

            if (hasNewVersion)
            {
                if (marker != null)
                {
                    markerService.Remove(marker);
                }
                if (length <= 0)
                {
                    marker = null;
                    length = 0;
                }
                else
                {
                    marker = markerService.Create(offset, length);
                    marker.BackgroundColor = Colors.LightGreen;
                }
            }

            if (oldText != null)
            {
                LineChangeInfo currLineInfo = changeWatcher.GetChange(startLine);

                if (currLineInfo.Change == ChangeType.Deleted && !(line == 1 && zeroLineInfo.Change == ChangeType.Deleted))
                {
                    var docLine = editor.Document.GetLineByNumber(startLine);
                    if (docLine.DelimiterLength == 0)
                    {
                        oldText = DocumentUtilities.GetLineTerminator(changeWatcher.CurrentDocument, startLine) + oldText;
                    }
                    oldText = editor.Document.GetText(docLine.Offset, docLine.TotalLength) + oldText;
                }

                DiffControl differ = new DiffControl();
                differ.CopyEditorSettingsAndHighlighting(editor);
                differ.editor.Document.Text = oldText;

                if (oldText == string.Empty)
                {
                    differ.editor.Visibility     = Visibility.Collapsed;
                    differ.copyButton.Visibility = Visibility.Collapsed;
                }
                else
                {
                    if (differ.editor.SyntaxHighlighting != null)
                    {
                        var baseDocument     = new ReadOnlyDocument(changeWatcher.BaseDocument, TextView.Document.FileName);
                        var mainHighlighter  = new DocumentHighlighter(baseDocument, differ.editor.SyntaxHighlighting);
                        var popupHighlighter = differ.editor.TextArea.GetService(typeof(IHighlighter)) as DocumentHighlighter;

                        popupHighlighter.InitialSpanStack = mainHighlighter.GetSpanStack(currLineInfo.OldStartLineNumber);
                    }
                }

                differ.revertButton.Click += delegate {
                    if (hasNewVersion)
                    {
                        Document.Replace(offset, length, oldText);
                        tooltip.IsOpen = false;
                    }
                };

                const double borderThickness = 1;
                tooltip.Child = new Border {
                    Child           = differ,
                    BorderBrush     = editor.TextArea.Foreground,
                    BorderThickness = new Thickness(borderThickness)
                };

                if (tooltip.IsOpen)
                {
                    tooltip.IsOpen = false;
                }

                tooltip.Closed += delegate {
                    if (marker != null)
                    {
                        markerService.Remove(marker);
                    }
                };
                tooltip.HorizontalOffset = -borderThickness - TextView.ScrollOffset.X;
                tooltip.VerticalOffset   =
                    TextView.GetVisualTopByDocumentLine(startLine) - TextView.ScrollOffset.Y;
                tooltip.Placement       = PlacementMode.Top;
                tooltip.PlacementTarget = this.TextView;

                tooltip.IsOpen = true;
            }
        }
예제 #2
0
        void DisplayTooltip(MouseEventArgs e)
        {
            int line = GetLineFromMousePosition(e);

            if (line == 0)
            {
                return;
            }

            int    startLine;
            bool   added;
            string oldText = changeWatcher.GetOldVersionFromLine(line, out startLine, out added);

            TextEditor editor = this.TextView.Services.GetService(typeof(TextEditor)) as TextEditor;

            markerService = this.TextView.Services.GetService(typeof(ITextMarkerService)) as ITextMarkerService;

            int  offset, length;
            bool hasNewVersion = changeWatcher.GetNewVersionFromLine(line, out offset, out length);

            if (hasNewVersion)
            {
                if (marker != null)
                {
                    markerService.Remove(marker);
                }
                if (length <= 0)
                {
                    marker = null;
                    length = 0;
                }
                else
                {
                    marker = markerService.Create(offset, length);
                    marker.BackgroundColor = Colors.LightGreen;
                }
            }

            if (oldText != null)
            {
                DiffControl differ = new DiffControl();
                differ.editor.SyntaxHighlighting            = editor.SyntaxHighlighting;
                differ.editor.HorizontalScrollBarVisibility = ScrollBarVisibility.Hidden;
                differ.editor.VerticalScrollBarVisibility   = ScrollBarVisibility.Hidden;
                differ.editor.Document.Text = oldText;
                differ.Background           = Brushes.White;

                // TODO : deletions on line 0 cannot be displayed.

                LineChangeInfo prevLineInfo = changeWatcher.GetChange(startLine - 1);
                LineChangeInfo lineInfo     = changeWatcher.GetChange(startLine);

                if (prevLineInfo.Change == ChangeType.Deleted)
                {
                    var docLine = editor.Document.GetLineByNumber(startLine - 1);
                    differ.editor.Document.Insert(0, editor.Document.GetText(docLine.Offset, docLine.TotalLength));
                }

                if (oldText == string.Empty)
                {
                    differ.editor.Visibility     = Visibility.Collapsed;
                    differ.copyButton.Visibility = Visibility.Collapsed;
                }
                else
                {
                    var baseDocument = new TextDocument(changeWatcher.BaseDocument.Text);
                    if (differ.editor.SyntaxHighlighting != null)
                    {
                        var mainHighlighter  = new DocumentHighlighter(baseDocument, differ.editor.SyntaxHighlighting.MainRuleSet);
                        var popupHighlighter = differ.editor.TextArea.GetService(typeof(IHighlighter)) as DocumentHighlighter;

                        if (prevLineInfo.Change == ChangeType.Deleted)
                        {
                            popupHighlighter.InitialSpanStack = mainHighlighter.GetSpanStack(prevLineInfo.OldStartLineNumber);
                        }
                        else
                        {
                            popupHighlighter.InitialSpanStack = mainHighlighter.GetSpanStack(lineInfo.OldStartLineNumber);
                        }
                    }
                }

                differ.revertButton.Click += delegate {
                    if (hasNewVersion)
                    {
                        int          delimiter = 0;
                        DocumentLine l         = Document.GetLineByOffset(offset + length);
                        if (added)
                        {
                            delimiter = l.DelimiterLength;
                        }
                        if (length == 0)
                        {
                            oldText += DocumentUtilitites.GetLineTerminator(new AvalonEditDocumentAdapter(Document, null), l.LineNumber);
                        }
                        Document.Replace(offset, length + delimiter, oldText);
                        tooltip.IsOpen = false;
                    }
                };

                tooltip.Child = new Border()
                {
                    Child           = differ,
                    BorderBrush     = Brushes.Black,
                    BorderThickness = new Thickness(1)
                };

                if (tooltip.IsOpen)
                {
                    tooltip.IsOpen = false;
                }

                tooltip.IsOpen = true;

                tooltip.Closed += delegate {
                    if (marker != null)
                    {
                        markerService.Remove(marker);
                    }
                };
                tooltip.HorizontalOffset = -10;
                tooltip.VerticalOffset   =
                    TextView.GetVisualTopByDocumentLine(startLine) - TextView.ScrollOffset.Y;
                tooltip.Placement       = PlacementMode.Top;
                tooltip.PlacementTarget = this.TextView;
            }
        }