public TextLayer(TextView parent, TextDocument textDocument) : base(parent)
{
Document = textDocument;
elementGenerators = new ObserveAddRemoveCollection <VisualLineElementGenerator>(ElementGenerator_Added, ElementGenerator_Removed);
lineTransformers = new ObserveAddRemoveCollection <IVisualLineTransformer>(LineTransformer_Added, LineTransformer_Removed);
heightTree = new HeightTree(textDocument, Skin.DefaultFont.Size);
lines = new Dictionary <DocumentLine, VisualLine>();
GlobalTextRunProperties = new TextRunProperties {
Foreground = Color.Black
};
lineTransformers = new ObserveAddRemoveCollection <IVisualLineTransformer>(LineTransformer_Added, LineTransformer_Removed);
HighlightingDefinition = HighlightingManager.DefaultHighlightingManager.Instance.GetDefinition("C#");
var colorizer = new HighlightingColorizer(highlightingDefinition.MainRuleSet);
lineTransformers.Add(colorizer);
weakLineTracker = WeakLineTracker.Register(textDocument, this);
RebuildDocument();
}
void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
{
if (colorizer != null)
{
this.TextArea.TextView.LineTransformers.Remove(colorizer);
colorizer = null;
}
if (newValue != null)
{
TextView textView = this.TextArea.TextView;
colorizer = new HighlightingColorizer(textView, newValue.MainRuleSet);
textView.LineTransformers.Insert(0, colorizer);
}
}
void UpdatePreview()
{
XshdSyntaxDefinition xshd = (XshdSyntaxDefinition)languageComboBox.SelectedItem;
if (xshd != null)
{
var customizationsForCurrentLanguage = customizationList.Where(c => c.Language == null || c.Language == xshd.Name);
CustomizingHighlighter.ApplyCustomizationsToDefaultElements(textEditor, customizationsForCurrentLanguage);
ApplyToRendering(textEditor, customizationsForCurrentLanguage);
var item = (IHighlightingItem)listBox.SelectedItem;
TextView textView = textEditor.TextArea.TextView;
foldingManager.Clear();
textMarkerService.RemoveAll(m => true);
textView.LineTransformers.Remove(colorizer);
colorizer = null;
if (item != null)
{
if (item.ParentDefinition != null)
{
var highlighter = new CustomizingHighlighter(
new DocumentHighlighter(textView.Document, item.ParentDefinition),
customizationsForCurrentLanguage
);
colorizer = new HighlightingColorizer(highlighter);
textView.LineTransformers.Add(colorizer);
}
textEditor.Select(0, 0);
bracketHighlighter.SetHighlight(null);
textEditor.Options.HighlightCurrentLine = false;
item.ShowExample(textEditor.TextArea);
ITextMarker m = textMarkerService.TextMarkers.SingleOrDefault();
if (m != null && m.Tag != null)
{
((Action <IHighlightingItem, ITextMarker>)m.Tag)(item, m);
}
}
}
}
