/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file and, per its terms, should not be removed:

 *

 * Copyright (c) 2004 World Wide Web Consortium,

 *

 * (Massachusetts Institute of Technology, European Research Consortium for

 * Informatics and Mathematics, Keio University). All Rights Reserved. This

 * work is distributed under the W3C(r) Software License [1] in the hope that

 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied

 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 *

 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231

 */

package org.w3c.dom;

/**

 * This interface permits a DOM implementer to supply one or more

 * implementations, based upon requested features and versions, as specified

 * in <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#DOMFeatures'>DOM

 * Features</a>. Each implemented <code>DOMImplementationSource</code> object is

 * listed in the binding-specific list of available sources so that its

 * <code>DOMImplementation</code> objects are made available.

 * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.

 * @since DOM Level 3

 */

public interface DOMImplementationSource {

    /**

     *  A method to request the first DOM implementation that supports the

     * specified features.

     * @param features  A string that specifies which features and versions

     *   are required. This is a space separated list in which each feature

     *   is specified by its name optionally followed by a space and a

     *   version number.  This method returns the first item of the list

     *   returned by <code>getDOMImplementationList</code>.  As an example,

     *   the string <code>"XML 3.0 Traversal +Events 2.0"</code> will

     *   request a DOM implementation that supports the module "XML" for its

     *   3.0 version, a module that support of the "Traversal" module for

     *   any version, and the module "Events" for its 2.0 version. The

     *   module "Events" must be accessible using the method

     *   <code>Node.getFeature()</code> and

     *   <code>DOMImplementation.getFeature()</code>.

     * @return The first DOM implementation that support the desired

     *   features, or <code>null</code> if this source has none.

     */

    public DOMImplementation getDOMImplementation(String features);

    /**

     * A method to request a list of DOM implementations that support the

     * specified features and versions, as specified in .

     * @param features A string that specifies which features and versions

     *   are required. This is a space separated list in which each feature

     *   is specified by its name optionally followed by a space and a

     *   version number. This is something like: "XML 3.0 Traversal +Events

     *   2.0"

     * @return A list of DOM implementations that support the desired

     *   features.

     */

    public DOMImplementationList getDOMImplementationList(String features);

}