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;
}
}
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;
}
}