net.bioclipse.structuredb.viewer.StructureDBLightweightLabelDecorator.java Source code

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Here is the source code for net.bioclipse.structuredb.viewer.StructureDBLightweightLabelDecorator.java

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/* *****************************************************************************
 * Copyright (c) 2009  Jonathan Alvarsson <jonalv@users.sourceforge.net>
 *
 * 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>
 *
 * Contact: http://www.bioclipse.net/
 ******************************************************************************/
package net.bioclipse.structuredb.viewer;

import net.bioclipse.core.util.LogUtils;
import net.bioclipse.structuredb.Activator;
import net.bioclipse.structuredb.Label;
import net.bioclipse.structuredb.StructureDBInstance;
import net.bioclipse.structuredb.business.IStructureDBChangeListener;

import org.apache.log4j.Logger;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.swt.widgets.Display;

/**
 * @author jonalv
 *
 */
public class StructureDBLightweightLabelDecorator extends LabelProvider
        implements ILightweightLabelDecorator, IStructureDBLabelDecoratorChangeListener {

    private Logger logger = Logger.getLogger(this.getClass());

    public StructureDBLightweightLabelDecorator() {
        Activator.getDefault().publishStructureDBDecoratorChangeListener(this);
    }

    public void decorate(Object element, IDecoration decoration) {

        try {
            if (element instanceof StructureDBInstance) {
                int n = ((StructureDBInstance) element).getNumberOfMolecules();
                decoration.addSuffix(" [" + n + "]");
            }
            if (element instanceof Label) {
                int n = ((Label) element).getNumberOfMolecules();
                decoration.addSuffix(" [" + n + "]");
            }
        } catch (Exception e) {
            logger.debug("Exception when trying to decorate StructureDB " + "part of databaseview");
            LogUtils.debugTrace(logger, e);
        }
    }

    public void fireRefresh() {
        Display.getDefault().asyncExec(new Runnable() {

            public void run() {
                fireLabelProviderChanged(new LabelProviderChangedEvent(StructureDBLightweightLabelDecorator.this));
            }
        });
    }
}