public void TextParser_ParseIncremental_CorrectlyHandlesAddedText()
{
var textParser = new TextParser();
var textParserResult = new TextParserTokenStream();
textParser.Parse(@"lorem ipsum |b|dolor|b| sit amet", textParserResult);
TheResultingCollection(textParserResult.Select(x => x.Text)).ShouldBeExactly("lorem", " ", "ipsum", " ", null, "dolor", null, " ", "sit", " ", "amet");
textParser.ParseIncremental(@"lorem ipsum hello world!! |b|dolor|b| sit amet", 12, 14, textParserResult);
TheResultingCollection(textParserResult.Select(x => x.Text)).ShouldBeExactly("lorem", " ", "ipsum", " ", "hello", " ", "world!!", " ", null, "dolor", null, " ", "sit", " ", "amet");
}
public void TextParser_ParseIncremental_CorrectlyHandlesReplacedText()
{
var textParser = new TextParser();
var textParserResult = new TextParserTokenStream();
textParser.Parse(@"lorem ipsum |b|dolor|b| sit amet", textParserResult);
TheResultingCollection(textParserResult.Select(x => x.Text)).ShouldBeExactly("lorem", " ", "ipsum", " ", null, "dolor", null, " ", "sit", " ", "amet");
textParser.ParseIncremental(@"lorem ipsum |b|foo bar baz qux|b| sit amet", 15, 21, textParserResult);
TheResultingCollection(textParserResult.Select(x => x.Text)).ShouldBeExactly("lorem", " ", "ipsum", " ", null, "foo", " ", "bar", " ", "baz", " ", "qux", null, " ", "sit", " ", "amet");
}
/// <summary>
/// Updates the cache which contains the element's parsed text.
/// </summary>
private void UpdateTextParserCache()
{
if (textParserResult != null)
{
textParserResult.Clear();
}
if (View == null)
{
return;
}
var content = Content;
var contentElement = content as UIElement;
if (contentElement == null)
{
if (textParserResult == null)
{
textParserResult = new TextParserTokenStream();
}
var contentAsString = default(String);
var contentFormat = ContentStringFormat;
if (contentFormat == null)
{
contentAsString = (content == null) ? String.Empty : content.ToString();
}
else
{
contentAsString = String.Format(contentFormat, content);
}
View.Resources.TextRenderer.Parse(contentAsString, textParserResult);
}
InvalidateArrange();
}
