} //EditHtmlForm
private void InitializeSyntaxHighlighting()
{
// Match Visual Studio as far as possible
_syntaxPatterns = new List <HtmlSyntaxPattern>();
_reOLE = new RichOLE(this.htmlText);
// Tags within but excluding angled brackets
{
var tags = @"[a-zA-Z][a-zA-Z0-9]*";
var withinAngledBrackets = @"(?<=</?)({0})(?=[/?>| ])";
AddSyntaxPattern(string.Format(withinAngledBrackets, tags), Color.DarkRed);
}
// Attributes within tags
{
var attribs = @"([a-zA-Z][a-zA-Z0-9]*)";
var withinTags = @"(?<=<[^>]+\s)({0})(?=[\s=>])";
AddSyntaxPattern(string.Format(withinTags, attribs), Color.Red);
}
// Attribute values
{
var besideAttrib = @"(?<=<([^>]+))({0})(?=[>/ ])";
// Unquoted values
var values = @"(=\s*.+?)";
AddSyntaxPattern(string.Format(besideAttrib, values), Color.Blue);
// Double quoted values
values = @"\""([^""]|\""\"")*\""";
AddSyntaxPattern(string.Format(besideAttrib, values), Color.Blue);
}
// Angled brackets
AddSyntaxPattern(@"</?", Color.Blue);
AddSyntaxPattern(@"/?>", Color.Blue);
// Comments kept separate to overwrite any other (custom) formatting
_commentsPattern = new HtmlSyntaxPattern(@"(<!--.*?-->)|(<!--.*)", RegexOptions.Singleline, Color.Green, Color.Transparent, FontStyle.Regular);
// Change handling
_changeTimer = new Timer();
_changeTimer.Tick += new EventHandler(OnChangeTimer);
_changeTimer.Interval = 500;
_changeTimer.Start();
this.htmlText.TextChanged += new System.EventHandler(this.OnTextChanged);
}
private void HightlightPattern(HtmlSyntaxPattern syntax)
{
MatchCollection matches = syntax.Pattern.Matches(htmlText.Text);
foreach (Match match in matches)
{
htmlText.SelectionStart = match.Index;
htmlText.SelectionLength = match.Length;
htmlText.SelectionColor = syntax.TextColor;
htmlText.SelectionBackColor = syntax.BackColor;
if (syntax.Style == FontStyle.Regular)
{
htmlText.SelectionFont = htmlText.Font;
}
else
{
htmlText.SelectionFont = new Font(htmlText.Font, syntax.Style);
}
}
}
