bundles/org.eclipse.ui.glance/src/org/eclipse/ui/glance/internal/viewers/ColoredTextViewerBlock.java

/*******************************************************************************
 * Copyright (c) 2017 Exyte
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Yuri Strot - initial API and Implementation
 ******************************************************************************/
package org.eclipse.ui.glance.internal.viewers;

import org.eclipse.jface.text.ITextPresentationListener;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.jface.text.TextViewer;

import org.eclipse.ui.glance.sources.Match;
import org.eclipse.ui.glance.sources.TextChangedEvent;
import org.eclipse.ui.glance.utils.TextUtils;

/**
 * @author Yuri Strot
 * 
 */
public class ColoredTextViewerBlock extends TextViewerBlock implements
		ITextPresentationListener {

	/**
	 * @param viewer
	 */
	public ColoredTextViewerBlock(TextViewer viewer) {
		super(viewer);
	}

	@Override
	protected void addListeners() {
		viewer.addTextPresentationListener(this);
		super.addListeners();
	}

	@Override
	public void dispose() {
		super.dispose();
		refresh();
	}

	@Override
	protected void fireTextChanged(TextChangedEvent changedEvent) {
		matches = Match.EMPTY;
		super.fireTextChanged(changedEvent);
	}

	@Override
	protected void removeListeners() {
		super.removeListeners();
		viewer.removeTextPresentationListener(this);
	}

	public void setMatches(Match[] matches) {
		this.matches = matches;
		refresh();
	}
	
	public void setSelected(Match selected) {
        this.selected = selected;
        refresh();
    }
	
	
	public Match getSelected() {
        return selected;
    }
	
	private void refresh() {
		viewer.invalidateTextPresentation();
	}

	public void applyTextPresentation(TextPresentation presentation) {
		TextUtils.applyStyles(presentation, matches, selected);
	}

	private Match[] matches = Match.EMPTY;
	private Match selected = null;

}