eu.geclipse.jsdl.ui.providers.FeatureLabelProvider.java Source code

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Here is the source code for eu.geclipse.jsdl.ui.providers.FeatureLabelProvider.java

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/******************************************************************************
 * Copyright (c) 2007 g-Eclipse consortium
 * 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
 *
 * Initial development of the original code was made for
 * project g-Eclipse founded by European Union
 * project number: FP6-IST-034327  http://www.geclipse.eu/
 *
 * Contributor(s):
 *     UCY (http://www.ucy.cs.ac.cy)
 *      - Nicholas Loulloudes (loulloudes.n@cs.ucy.ac.cy)
 *
 *****************************************************************************/

package eu.geclipse.jsdl.ui.providers;

/**
 * @author nickl
 */

import java.net.URL;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;

import eu.geclipse.jsdl.model.base.FileSystemType;
import eu.geclipse.jsdl.model.posix.ArgumentType;
import eu.geclipse.jsdl.model.posix.EnvironmentType;
import eu.geclipse.jsdl.ui.internal.Activator;

/**
 * This class provided a Label Provider for Structural Features of a JSDL document.
 *  
 *
 */
public class FeatureLabelProvider extends LabelProvider implements ITableLabelProvider {

    /**
     * String Type Constant for Default strings.
     */
    public static final int STRING_TYPE_DEFAULT = 1;
    /**
     * String Type Constant for Job Annotation strings.
     */
    public static final int STRING_TYPE_ANNOTATION = 2;
    /**
     * String Type Constant for Job Project strings.
     */
    public static final int STRING_TYPE_PROJECT = 3;
    /**
     * String Type Constant for Candidate Hosts string.
     */
    public static final int STRING_TYPE_CANDIDATE_HOSTS = 4;

    private Image argsImage;
    private Image candHostsImage;
    private Image projectsImage;
    private Image annotationImage;
    private int stringType;

    /**
     * Class Constructor
     */
    public FeatureLabelProvider() {
        loadImages();
        this.stringType = STRING_TYPE_DEFAULT;
    }

    public Image getColumnImage(final Object element, final int columnIndex) {
        Image image = null;

        switch (columnIndex) {
        case 0:

            if (element instanceof ArgumentType) {
                image = this.argsImage;
            } else if (element instanceof String) {
                switch (this.stringType) {
                case STRING_TYPE_ANNOTATION:
                    image = this.annotationImage;
                    break;
                case STRING_TYPE_PROJECT:
                    image = this.projectsImage;
                    break;
                case STRING_TYPE_CANDIDATE_HOSTS:
                    image = this.candHostsImage;
                    break;
                default:
                    break;
                }

            }

            break;
        default:
            break;
        } // end switch

        return image;

    }

    public String getColumnText(final Object element, final int columnIndex) {

        String text = null;
        Object[] array = null;

        if (element instanceof ArgumentType) {

            ArgumentType argumentType = (ArgumentType) element;
            switch (columnIndex) {
            case 0:
                text = argumentType.getFilesystemName();
                break;
            case 1:
                text = argumentType.getValue();
                break;
            default:
                break;
            }

        } else if (element instanceof EnvironmentType) {

            EnvironmentType environmentType = (EnvironmentType) element;
            switch (columnIndex) {
            case 0:
                text = environmentType.getName();
                break;
            case 1:
                text = environmentType.getFilesystemName();
                break;
            case 2:
                text = environmentType.getValue();
                break;
            default:
                break;

            } // end switch

        } // end else_if EnvironmentType

        else if (element instanceof FileSystemType) {

            FileSystemType fileSystemType = (FileSystemType) element;
            switch (columnIndex) {
            case 0:
                text = fileSystemType.getName();
                break;
            case 1:
                text = fileSystemType.getFileSystemType().toString();
                break;
            case 2:
                text = fileSystemType.getMountPoint();
                break;
            default:
                break;

            } // end switch

        } // end else_if EnvironmentType

        else if (element instanceof Object[]) {

            array = (Object[]) element;

        }

        else {

            switch (columnIndex) {
            case 0:
                text = element.toString();
                break;
            default:
                break;
            } // end switch

        }

        if ((array != null) && (columnIndex < array.length)) {
            text = getText(array[columnIndex]);
        }
        return text;

    }// End String getColumnText()

    /**
     * @param type The FeatureLabelProvide String Type. If not specified the 
     * default string Type is used.
     * 
     */
    public void setStringType(final int type) {
        this.stringType = type;
    }

    void loadImages() {

        URL argsURL = Activator.getDefault().getBundle().getEntry("icons/args.gif"); //$NON-NLS-1$
        URL candHostsURL = Activator.getDefault().getBundle().getEntry("icons/computing_obj.gif"); //$NON-NLS-1$
        URL projectsURL = Activator.getDefault().getBundle().getEntry("icons/gridprojects.gif"); //$NON-NLS-1$
        URL annotationURL = Activator.getDefault().getBundle().getEntry("icons/annotation_obj.gif"); //$NON-NLS-1$
        ImageDescriptor argsDesc = ImageDescriptor.createFromURL(argsURL);
        ImageDescriptor candHostsDesc = ImageDescriptor.createFromURL(candHostsURL);
        ImageDescriptor projectsDesc = ImageDescriptor.createFromURL(projectsURL);
        ImageDescriptor annotDesc = ImageDescriptor.createFromURL(annotationURL);
        this.argsImage = argsDesc.createImage();
        this.candHostsImage = candHostsDesc.createImage();
        this.projectsImage = projectsDesc.createImage();
        this.annotationImage = annotDesc.createImage();

    }

} // End class