IViewerFilterContributor.java

/**
 * This file Copyright (c) 2005-2010 Aptana, Inc. This program is
 * dual-licensed under both the Aptana Public License and the GNU General
 * Public license. You may elect to use one or the other of these licenses.
 * 
 * This program is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT. Redistribution, except as permitted by whichever of
 * the GPL or APL you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or modify this
 * program under the terms of the GNU General Public License,
 * Version 3, as published by the Free Software Foundation.  You should
 * have received a copy of the GNU General Public License, Version 3 along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Aptana provides a special exception to allow redistribution of this file
 * with certain other free and open source software ("FOSS") code and certain additional terms
 * pursuant to Section 7 of the GPL. You may view the exception and these
 * terms on the web at http://www.aptana.com/legal/gpl/.
 * 
 * 2. For the Aptana Public License (APL), this program and the
 * accompanying materials are made available under the terms of the APL
 * v1.0 which accompanies this distribution, and is available at
 * http://www.aptana.com/legal/apl/.
 * 
 * You may view the GPL, Aptana's exception and additional terms, and the
 * APL in the file titled license.html at the root of the corresponding
 * plugin containing this source file.
 * 
 * Any modifications to this file must keep this entire header intact.
 */
package com.aptana.ide.views;

import org.eclipse.jface.viewers.Viewer;

/**
 * Implementors of this interface allows extending the ViewerFilters. A structured viewer that needs that kind of
 * filtering can ask for the filters by calling the ViewerFilterContributorProvider and getting the needed filters by ID
 * and language.
 * Usually, implementors of this interface will extend the AbstractViewerFilerContributor.
 * 
 * @author Shalom Gibly
 * @since Aptana Studio 1.2.6
 */
public interface IViewerFilterContributor
{
	/**
	 * Returns whether the given element makes it through this filter.
	 * 
	 * @param viewer
	 *            the viewer
	 * @param parentElement
	 *            the parent element
	 * @param element
	 *            the element
	 * @param data
	 *            An extra data instance that can be used by this filter.
	 * @return <code>true</code> if element is included in the filtered set, and <code>false</code> if excluded
	 */
	public boolean select(Viewer viewer, Object parentElement, Object element, Object data);
}