/*
* void DemoMode()
* {
* foldingGenerator = new FoldingElementGenerator() { FoldingManager = fm };
* foldingMargin = new FoldingMargin { FoldingManager = fm };
* foldingMarginBorder = new Border {
* Child = foldingMargin,
* Background = new LinearGradientBrush(Colors.White, Colors.Transparent, 0)
* };
* foldingMarginBorder.SizeChanged += UpdateTextViewClip;
* textEditor.TextArea.TextView.ElementGenerators.Add(foldingGenerator);
* textEditor.TextArea.LeftMargins.Add(foldingMarginBorder);
* }
*
* void UpdateTextViewClip(object sender, SizeChangedEventArgs e)
* {
* textEditor.TextArea.TextView.Clip = new RectangleGeometry(
* new Rect(-foldingMarginBorder.ActualWidth,
* 0,
* textEditor.TextArea.TextView.ActualWidth + foldingMarginBorder.ActualWidth,
* textEditor.TextArea.TextView.ActualHeight));
* }
*/
public void Uninstall()
{
Clear();
if (_textArea != null)
{
_textArea.Caret.PositionChanged -= TextArea_Caret_PositionChanged;
_textArea.LeftMargins.Remove(_margin);
_textArea.TextView.ElementGenerators.Remove(_generator);
_textArea.TextView.Services.RemoveService(typeof(FoldingManager));
_margin = null;
_generator = null;
_textArea = null;
}
}
public FoldingManagerInstallation(TextArea textArea) : base(textArea.Document)
{
_textArea = textArea;
_margin = new FoldingMargin {
FoldingManager = this
};
_generator = new FoldingElementGenerator {
FoldingManager = this
};
textArea.LeftMargins.Add(_margin);
textArea.TextView.Services.AddService(typeof(FoldingManager), this);
// HACK: folding only works correctly when it has highest priority
textArea.TextView.ElementGenerators.Insert(0, _generator);
textArea.Caret.PositionChanged += TextArea_Caret_PositionChanged;
}