org.eclipse.jface.viewers.ArrayContentProvider Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jface Show documentation

JFace is a UI toolkit with classes for handling many common UI programming tasks. JFace is window-system-independent in both its API and implementation, and is designed to work with SWT without hiding it. JFace includes the usual UI toolkit components of image and font registries, text, dialog, preference and wizard frameworks, and progress reporting for long running operations. Two of its more interesting features are actions and viewers. The action mechanism allows user commands to be defined independently from their exact whereabouts in the UI. Viewers are model based adapters for certain SWT widgets, simplifying the presentation of application data structured as lists, tables or trees.

The newest version!

/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.jface.viewers;

import java.util.Collection;

/**
 * This implementation of IStructuredContentProvider handles
 * the case where the viewer input is an unchanging array or collection of elements.
 * 
 * This class is not intended to be subclassed outside the viewer framework.
 *  
 * 
 * @since 2.1
 */
public class ArrayContentProvider implements IStructuredContentProvider {

    /**
     * Returns the elements in the input, which must be either an array or a
     * Collection. 
     */
    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof Object[]) {
			return (Object[]) inputElement;
		}
        if (inputElement instanceof Collection) {
			return ((Collection) inputElement).toArray();
		}
        return new Object[0];
    }

    /**
     * This implementation does nothing.
     */
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        // do nothing.
    }

    /**
     * This implementation does nothing.
     */
    public void dispose() {
        // do nothing.
    }
}