com.siemens.ct.mp3m.ui.views.logical.ArtistTreeLabelProvider.java Source code

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Here is the source code for com.siemens.ct.mp3m.ui.views.logical.ArtistTreeLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2009 Siemens AG
 * 
 * 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:
 *    Kai Tdter - initial API and implementation
 *******************************************************************************/

package com.siemens.ct.mp3m.ui.views.logical;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import com.siemens.ct.mp3m.model.logical.Album;
import com.siemens.ct.mp3m.model.logical.Artist;
import com.siemens.ct.mp3m.model.logical.Song;

/**
 * This class provides the labels for the ArtistTableTree application
 */
class ArtistTreeLabelProvider implements ITableLabelProvider {

    private Image artistImage;
    private Image albumImage;
    private Image songImage;

    /**
     * Gets the image for the specified column
     * 
     * @param type
     *            the Artist, Album or Song
     * @param column
     *            the column
     * 
     * @return Image
     */
    public Image getColumnImage(Object type, int column) {
        // This does not work with column 0...
        if (type instanceof Song && column == 0) {
            if (songImage == null) {
                ImageDescriptor imageDescriptor = AbstractUIPlugin
                        .imageDescriptorFromPlugin("com.siemens.ct.mp3m.ui.views.logical", "icons/song.gif");
                songImage = imageDescriptor.createImage();
            }
            return songImage;
        } else if (type instanceof Album && column == 0) {
            if (albumImage == null) {
                ImageDescriptor imageDescriptor = AbstractUIPlugin
                        .imageDescriptorFromPlugin("com.siemens.ct.mp3m.ui.views.logical", "icons/cd.gif");
                albumImage = imageDescriptor.createImage();
            }
            return albumImage;
        } else if (type instanceof Artist && column == 0) {
            if (artistImage == null) {
                ImageDescriptor imageDescriptor = AbstractUIPlugin
                        .imageDescriptorFromPlugin("com.siemens.ct.mp3m.ui.views.logical", "icons/artist.gif");
                artistImage = imageDescriptor.createImage();
            }
            return artistImage;
        }

        return null;
    }

    /**
     * Gets the text for the specified column
     * 
     * @param type
     *            the Artist, Album or Song
     * @param column
     *            the column
     * 
     * @return String
     */
    public String getColumnText(Object type, int column) {
        if (type instanceof Artist && column == 0)
            return ((Artist) type).getName();
        else if (type instanceof Album && column == 0)
            return ((Album) type).getName();
        else if (type instanceof Song)
            if (column == 0) {
                return ((Song) type).getName();
            } else if (column == 1) {
                return ((Song) type).getTrack();
            } else if (column == 2) {
                return ((Song) type).getDuration();
            }

        return ""; //$NON-NLS-1$
    }

    public void addListener(ILabelProviderListener listener) {
    }

    public void dispose() {
        if (songImage != null) {
            songImage.dispose();
        }
    }

    public boolean isLabelProperty(Object element, String property) {
        return false;
    }

    public void removeListener(ILabelProviderListener listener) {
    }
}