/// <summary>
/// This method is called when a text view is removed from this HighlightingColorizer,
/// and also when the TextDocument on any associated text view changes.
/// </summary>
protected virtual void DeregisterServices(TextView textView)
{
if (highlighter != null)
{
if (isInHighlightingGroup)
{
highlighter.EndHighlighting();
isInHighlightingGroup = false;
}
highlighter.HighlightingStateChanged -= OnHighlightStateChanged;
// remove highlighter if it is registered
if (textView.Services.GetService(typeof(IHighlighter)) == highlighter)
{
textView.Services.RemoveService(typeof(IHighlighter));
}
if (!isFixedHighlighter)
{
if (highlighter != null)
{
highlighter.Dispose();
}
highlighter = null;
}
}
}
/// <summary>
/// Creates a new <see cref="FixedHighlighter"/> for a copy of a portion
/// of the input document (including the original highlighting).
/// </summary>
public static FixedHighlighter CreateView(IHighlighter highlighter, int offset, int endOffset)
{
var oldDocument = highlighter.Document;
// ReadOnlyDocument would be better; but displaying the view in AvalonEdit
// requires a TextDocument
var newDocument = new TextDocument(oldDocument.CreateSnapshot(offset, endOffset - offset));
var oldStartLine = oldDocument.GetLineByOffset(offset);
var oldEndLine = oldDocument.GetLineByOffset(endOffset);
int oldStartLineNumber = oldStartLine.LineNumber;
HighlightedLine[] newLines = new HighlightedLine[oldEndLine.LineNumber - oldStartLineNumber + 1];
highlighter.BeginHighlighting();
try {
for (int i = 0; i < newLines.Length; i++) {
HighlightedLine oldHighlightedLine = highlighter.HighlightLine(oldStartLineNumber + i);
IDocumentLine newLine = newDocument.GetLineByNumber(1 + i);
HighlightedLine newHighlightedLine = new HighlightedLine(newDocument, newLine);
MoveSections(oldHighlightedLine.Sections, -offset, newLine.Offset, newLine.EndOffset, newHighlightedLine.Sections);
newHighlightedLine.ValidateInvariants();
newLines[i] = newHighlightedLine;
}
} finally {
highlighter.EndHighlighting();
}
return new FixedHighlighter(newDocument, newLines);
}
/// <summary>
/// Creates a new <see cref="FixedHighlighter"/> for a copy of a portion
/// of the input document (including the original highlighting).
/// </summary>
public static FixedHighlighter CreateView(IHighlighter highlighter, int offset, int endOffset)
{
var oldDocument = highlighter.Document;
// ReadOnlyDocument would be better; but displaying the view in AvalonEdit
// requires a TextDocument
var newDocument = new TextDocument(oldDocument.CreateSnapshot(offset, endOffset - offset));
var oldStartLine = oldDocument.GetLineByOffset(offset);
var oldEndLine = oldDocument.GetLineByOffset(endOffset);
int oldStartLineNumber = oldStartLine.LineNumber;
HighlightedLine[] newLines = new HighlightedLine[oldEndLine.LineNumber - oldStartLineNumber + 1];
highlighter.BeginHighlighting();
try {
for (int i = 0; i < newLines.Length; i++)
{
HighlightedLine oldHighlightedLine = highlighter.HighlightLine(oldStartLineNumber + i);
IDocumentLine newLine = newDocument.GetLineByNumber(1 + i);
HighlightedLine newHighlightedLine = new HighlightedLine(newDocument, newLine);
MoveSections(oldHighlightedLine.Sections, -offset, newLine.Offset, newLine.EndOffset, newHighlightedLine.Sections);
newHighlightedLine.ValidateInvariants();
newLines[i] = newHighlightedLine;
}
} finally {
highlighter.EndHighlighting();
}
return(new FixedHighlighter(newDocument, newLines));
}
public void EndHighlighting()
{
baseHighlighter.EndHighlighting();
}