public void ClosePopup()
{
if (popup != null) {
editor.TextArea.TextView.VisualLinesChanged -= textView_VisualLinesChanged;
popup.IsOpenIfFocused = false;
popup = null;
}
}
public void Show(BracketSearchResult bracketSearchResult)
{
ClosePopup();
if (bracketSearchResult == null || bracketSearchResult.DefinitionHeaderLength == 0)
return;
int startOffset = bracketSearchResult.DefinitionHeaderOffset;
int endOffset = startOffset + bracketSearchResult.DefinitionHeaderLength;
// show whole line even if the definition is only a part:
DocumentLine firstLine = editor.Document.GetLineByOffset(startOffset);
DocumentLine lastLine = editor.Document.GetLineByOffset(endOffset);
TextEditor popupEditor = new TextEditor();
popupEditor.IsReadOnly = true;
popupEditor.HorizontalScrollBarVisibility = ScrollBarVisibility.Hidden;
popupEditor.VerticalScrollBarVisibility = ScrollBarVisibility.Hidden;
popupEditor.CopySettingsFrom(editor);
IHighlighter oldHighlighter = editor.GetRequiredService<IHighlighter>();
FixedHighlighter newHighlighter = FixedHighlighter.CreateView(oldHighlighter, firstLine.Offset, lastLine.EndOffset);
popupEditor.Document = (TextDocument)newHighlighter.Document;
popupEditor.TextArea.TextView.LineTransformers.Add(new HighlightingColorizer(newHighlighter));
popup = new ExtendedPopup(editor.TextArea);
const double borderThickness = 1;
popup.Child = new Border() {
Child = popupEditor,
BorderBrush = editor.TextArea.Foreground,
BorderThickness = new Thickness(borderThickness)
};
popup.HorizontalOffset = -borderThickness - editor.TextArea.TextView.ScrollOffset.X;
popup.Placement = PlacementMode.Top;
popup.PlacementTarget = editor.TextArea.TextView;
this.currentStartOffset = firstLine.Offset;
editor.TextArea.TextView.VisualLinesChanged += textView_VisualLinesChanged;
if (editor.TextArea.TextView.VisualLinesValid)
textView_VisualLinesChanged(null, null); // open popup if necessary
}