org.eclipse.jface.text.CursorLinePainter Java Examples

@Override
protected void configureTextViewer(final TextViewer textViewer)
{
	ThemePlugin.getDefault().getControlThemerFactory().apply(textViewer);

	// Force line highlight color. We need to perform this after the line painter is attached, which happens after
	// the return of this method. Scheduling async seems to work.
	UIUtils.getDisplay().asyncExec(new Runnable()
	{

		public void run()
		{
			CursorLinePainter p = getCursorLinePainterInstalled(textViewer);
			if (p != null)
			{
				p.setHighlightColor(getColorManager().getColor(getCurrentTheme().getLineHighlightAgainstBG()));
			}
		}
	});
}
 

private CursorLinePainter getCursorLinePainterInstalled(TextViewer viewer)
{
	Listener[] listeners = viewer.getTextWidget().getListeners(3001/* StyledText.LineGetBackground */);
	for (Listener listener : listeners)
	{
		if (listener instanceof TypedListener)
		{
			TypedListener typedListener = (TypedListener) listener;
			if (typedListener.getEventListener() instanceof CursorLinePainter)
			{
				return (CursorLinePainter) typedListener.getEventListener();
			}
		}
	}
	return null;
}
 

/**
 * Initialize foreground, background color, current line highlight from the
 * current theme if needed.
 *
 */
private void applyThemeEditorIfNeeded() {
	if (!initializeViewerColors) {
		StyledText styledText = viewer.getTextWidget();
		((ITheme) tokenProvider).initializeViewerColors(styledText);
		initializeViewerColors = true;
	}
	if (updateTextDecorations) {
		return;
	}
	try {
		// Ugly code to update "current line highlight" :
		// - get the PaintManager from the ITextViewer with reflection.
		// - get the list of IPainter of PaintManager with reflection
		// - loop for IPainter to retrieve CursorLinePainter which manages "current line
		// highlight".
		PaintManager paintManager = ClassHelper.getFieldValue(viewer, "fPaintManager", TextViewer.class);
		if (paintManager == null) {
			return;
		}
		List<IPainter> painters = ClassHelper.getFieldValue(paintManager, "fPainters", PaintManager.class);
		if (painters == null) {
			return;
		}
		for (IPainter painter : painters) {
			if (painter instanceof CursorLinePainter) {
				// Update current line highlight
				Color background = tokenProvider.getEditorCurrentLineHighlight();
				if (background != null) {
					((CursorLinePainter) painter).setHighlightColor(background);
				}
				updateTextDecorations = true;
			}
		}
	} catch (Exception e) {
		TMUIPlugin.getDefault().getLog().log(new Status(IStatus.ERROR, TMUIPlugin.PLUGIN_ID, e.getMessage(), e));
	}
}
 

private void createCursorLinePainter() {
    cursorLinePainter = new CursorLinePainter(txtViewer);
    Color color = new Color(Display.getCurrent(),PreferenceConverter.getColor(store,ILogViewerConstants.PREF_CURSORLINE_COLOR));
    cursorLinePainter.setHighlightColor(color);
    ITextViewerExtension2 extension = (ITextViewerExtension2)txtViewer;
    extension.addPainter(cursorLinePainter);
}