com.nokia.tools.screen.ui.gef.WidgetLabelProvider.java Source code

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Here is the source code for com.nokia.tools.screen.ui.gef.WidgetLabelProvider.java

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/*
* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies). 
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.tools.screen.ui.gef;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;

import com.nokia.tools.screen.core.IScreenElement;
import com.nokia.tools.screen.core.JEMUtil;

/**
 * This is the JFace label provider for the screen elements. The icon and text
 * are provided by the underlying content data.
 * 
 */
public class WidgetLabelProvider extends LabelProvider {
    private Image image;

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.LabelProvider#getImage(java.lang.Object)
     */
    @Override
    public Image getImage(Object element) {
        if (image != null) {
            image.dispose();
        }
        IScreenElement adapter = JEMUtil.getScreenElement((EObject) element);
        if (adapter != null) {
            image = adapter.getImage();
            return image;
        }

        return null;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object)
     */
    @Override
    public String getText(Object element) {
        IScreenElement adapter = JEMUtil.getScreenElement((EObject) element);
        if (adapter != null) {
            String text = adapter.getText();
            if (text != null) {
                return text;
            }
        }
        return super.getText(element);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.BaseLabelProvider#dispose()
     */
    @Override
    public void dispose() {
        super.dispose();
        if (image != null) {
            image.dispose();
        }
    }
}