org.antlr.eclipse.ui.AntlrLabelDecorator.java Source code

Introduction

Here is the source code for org.antlr.eclipse.ui.AntlrLabelDecorator.java

Source

/**
 * <small>
 * <p><i>Copyright (C) 2005 Torsten Juergeleit, 
 * All rights reserved. </i></p>
 * 
 * <p>USE OF THIS CONTENT IS GOVERNED BY THE TERMS AND CONDITIONS OF THIS
 * AGREEMENT AND/OR THE TERMS AND CONDITIONS OF LICENSE AGREEMENTS OR NOTICES
 * INDICATED OR REFERENCED BELOW. BY USING THE CONTENT, YOU AGREE THAT YOUR USE
 * OF THE CONTENT IS GOVERNED BY THIS AGREEMENT AND/OR THE TERMS AND CONDITIONS
 * OF ANY APPLICABLE LICENSE AGREEMENTS OR NOTICES INDICATED OR REFERENCED
 * BELOW. IF YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT AND
 * THE TERMS AND CONDITIONS OF ANY APPLICABLE LICENSE AGREEMENTS OR NOTICES
 * INDICATED OR REFERENCED BELOW, THEN YOU MAY NOT USE THE CONTENT.</p>
 * 
 * <p>This Content is Copyright (C) 2005 Torsten Juergeleit, 
 * and is provided to you under the terms and conditions of the Common Public 
 * License Version 1.0 ("CPL"). A copy of the CPL is provided with this Content 
 * and is also available at 
 *     <a href="http://www.eclipse.org/legal/cpl-v10.html">
 *         http://www.eclipse.org/legal/cpl-v10.html </a>.
 * 
 * For purposes of the CPL, "Program" will mean the Content.</p>
 * 
 * <p>Content includes, but is not limited to, source code, object code,
 * documentation and any other files in this distribution.</p>
 * 
 * </small>
 */
package org.antlr.eclipse.ui;

import org.antlr.eclipse.core.builder.AntlrBuilder;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;

/**
 * Decorates the text for generated files
 */
public class AntlrLabelDecorator extends LabelProvider implements ILabelDecorator {
    /** {@inheritDoc} */
    @Override
    public void dispose() {
        super.dispose();
    }

    /** {@inheritDoc} */
    @Override
    public Image decorateImage(final Image anImage, final Object anElement) {
        return anImage;
    }

    /** {@inheritDoc} */
    @Override
    public String decorateText(String aText, final Object anElement) {
        String grammar = getGrammarProperty(anElement);
        if (grammar != null) {
            StringBuilder buf = new StringBuilder(aText);
            buf.append("  <");
            buf.append(grammar);
            buf.append(">");
            aText = buf.toString();
        }
        return aText;
    }

    private String getGrammarProperty(final Object anElement) {
        String grammar = null;
        if (anElement instanceof IResource) {

            if (((IResource) anElement).isAccessible() && !((IResource) anElement).isPhantom()) {
                try {
                    grammar = ((IResource) anElement).getPersistentProperty(AntlrBuilder.GRAMMAR_ECLIPSE_PROPERTY);
                } catch (CoreException e) {
                    AntlrUIPlugin.log(e);
                }
            } else {
                grammar = "(resource not found)";
            }
        }
        return grammar;
    }
}