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// Copyright (c) 2010 Joe Moorhouse
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Windows;
using System.Windows.Media;
using System.Windows.Threading;
using ICSharpCode.AvalonEdit;
using ICSharpCode.AvalonEdit.Document;
using ICSharpCode.AvalonEdit.Rendering;
using ICSharpCode.AvalonEdit.Highlighting;
namespace PythonConsoleControl
{
/// <summary>
/// Only colourize when text is input
/// </summary>
public class PythonConsoleHighlightingColorizer : HighlightingColorizer
{
TextDocument document;
/// <summary>
/// Creates a new HighlightingColorizer instance.
/// </summary>
/// <param name="ruleSet">The root highlighting rule set.</param>
public PythonConsoleHighlightingColorizer(IHighlightingDefinition highlightingDefinition, TextDocument document)
: base(new DocumentHighlighter(document, highlightingDefinition ))
{
if (document == null)
throw new ArgumentNullException("document");
this.document = document;
}
/// <inheritdoc/>
protected override void ColorizeLine(DocumentLine line)
{
IHighlighter highlighter = CurrentContext.TextView.Services.GetService(typeof(IHighlighter)) as IHighlighter;
string lineString = document.GetText(line);
if (highlighter != null)
{
if (lineString.Length < 3 || lineString.Substring(0, 3) == ">>>" || lineString.Substring(0, 3) == "...") {
HighlightedLine hl = highlighter.HighlightLine(line.LineNumber);
foreach (HighlightedSection section in hl.Sections)
{
ChangeLinePart(section.Offset, section.Offset + section.Length,
visualLineElement => ApplyColorToElement(visualLineElement, section.Color));
}
}
else { // Could add foreground colour functionality here.
}
}
}
}
}
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