net.sf.rcer.cts.ui.TransportLabelProvider.java Source code

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Here is the source code for net.sf.rcer.cts.ui.TransportLabelProvider.java

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/**
 * Copyright (c) 2009, 2010 The RCER Development Team.
 *
 * 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. If redistributing this code,
 * this entire header must remain intact.
 *
 * $Id$
 */
package net.sf.rcer.cts.ui;

import net.sf.rcer.cts.AbstractTransport;

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

/**
 * The {@link LabelProvider} used to display the transport objects in the tree viewer 
 * of the {@link TransportSelectionDialog}-
 * @author vwegert
 *
 */
class TransportLabelProvider extends LabelProvider implements ITableLabelProvider {

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int)
     */
    public Image getColumnImage(Object element, int columnIndex) {
        // We don't have any images to provide (yet).
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int)
     */
    public String getColumnText(Object element, int columnIndex) {
        switch (columnIndex) {
        case 0:
            return getKeyColumnText(element);
        case 1:
            return getOwnerText(element);
        case 2:
            return getDescriptionText(element);
        default:
            return ""; //$NON-NLS-1$
        }
    }

    /**
     * @param element
     * @return the text to be displayed in the key (hierarchy) column.
     */
    private String getKeyColumnText(Object element) {
        if (element instanceof ITreeItem) {
            ITreeItem item = (ITreeItem) element;
            return item.getKeyColumnText();
        }
        if (element instanceof AbstractTransport) {
            return ((AbstractTransport) element).getID();
        }
        return ""; //$NON-NLS-1$
    }

    /**
     * @param element
     * @return the text to be displayed in the owner column.
     */
    private String getOwnerText(Object element) {
        if (element instanceof ITreeItem) {
            return ""; //$NON-NLS-1$
        }
        if (element instanceof AbstractTransport) {
            return ((AbstractTransport) element).getOwner();
        }
        return ""; //$NON-NLS-1$
    }

    /**
     * @param element
     * @return the text to be displayed in the description column
     */
    private String getDescriptionText(Object element) {
        if (element instanceof ITreeItem) {
            ITreeItem item = (ITreeItem) element;
            return item.getDescriptionText();
        }
        if (element instanceof AbstractTransport) {
            return ((AbstractTransport) element).getDescription();
        }
        return ""; //$NON-NLS-1$
    }

}