com.eclipsesource.tabris.demos.ui.BooksLabelProvider.java Source code

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Here is the source code for com.eclipsesource.tabris.demos.ui.BooksLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2013 EclipseSource and others.
 * 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:
 *    EclipseSource - initial API and implementation
 ******************************************************************************/
package com.eclipsesource.tabris.demos.ui;

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

public class BooksLabelProvider implements ITableLabelProvider {

    public Image getColumnImage(Object element, int columnIndex) {
        if (element instanceof Book) {
            return resizeImageToHeight(((Book) element).getImage(), 48);
        }
        return null;
    }

    private static Image resizeImageToHeight(Image image, int height) {
        float ratio = (float) image.getBounds().height / (float) image.getBounds().width;
        int width = Math.round(height / ratio);
        return new Image(image.getDevice(), image.getImageData().scaledTo(width, height));
    }

    public String getColumnText(Object element, int columnIndex) {
        String result = null;
        if (columnIndex == 1) {
            if (element instanceof Book) {
                result = ((Book) element).getTitle();
            }
        } else if (columnIndex == 2) {
            if (element instanceof Book) {
                result = ((Book) element).getAuthor();
            }
        }
        return result;
    }

    public void addListener(ILabelProviderListener listener) {
        // nothing to do here
    }

    public void dispose() {
        // nothing to do here
    }

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

    public void removeListener(ILabelProviderListener listener) {
        // nothing to do here
    }
}