com.nokia.tools.variant.confml.ui.dialogs.IconSelectionLabelProvider.java Source code

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Here is the source code for com.nokia.tools.variant.confml.ui.dialogs.IconSelectionLabelProvider.java

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/*
 * Copyright (c) 2009 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: This file is part of com.nokia.tools.variant.confml.ui component.
 */

package com.nokia.tools.variant.confml.ui.dialogs;

import org.eclipse.emf.common.util.URI;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

import com.nokia.tools.vct.common.appmodel.EConfMLLayer;

/**
 * This class provides the labels for the file tree
 */

public class IconSelectionLabelProvider extends LabelProvider {
    private ImageRegistry imageRegistry;

    public IconSelectionLabelProvider() {
        super();
    }

    public Image getImage(Object element) {
        if (element instanceof EConfMLLayer) {
            return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
        } else if (element instanceof URI) {
            String extension = ((URI) element).fileExtension();
            if (imageRegistry == null)
                imageRegistry = new ImageRegistry();
            Image image = imageRegistry.get(extension);
            if (image != null)
                return image;

            Program program = Program.findProgram(extension);
            ImageData imageData = (program == null ? null : program.getImageData());
            if (imageData != null) {
                image = new Image(Display.getCurrent(), imageData);
                imageRegistry.put(extension, image);
            } else {
                image = PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE);
            }
            return image;
        }

        return null;
    }

    public String getText(Object element) {
        if (element instanceof EConfMLLayer) {
            return ((EConfMLLayer) element).getName();
        } else if (element instanceof URI) {
            return element.toString();
        }
        return "Undefined";
    }

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

}