001    /*
002     * Copyright (c) 2004 World Wide Web Consortium,
003     *
004     * (Massachusetts Institute of Technology, European Research Consortium for
005     * Informatics and Mathematics, Keio University). All Rights Reserved. This
006     * work is distributed under the W3C(r) Software License [1] in the hope that
007     * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
008     * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
009     *
010     * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
011     */
012    
013    package org.w3c.dom;
014    
015    /**
016     * This interface permits a DOM implementer to supply one or more
017     * implementations, based upon requested features and versions, as specified
018     * in . Each implemented <code>DOMImplementationSource</code> object is
019     * listed in the binding-specific list of available sources so that its
020     * <code>DOMImplementation</code> objects are made available.
021     * <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>.
022     * @since DOM Level 3
023     */
024    public interface DOMImplementationSource {
025        /**
026         *  A method to request the first DOM implementation that supports the
027         * specified features.
028         * @param features  A string that specifies which features and versions
029         *   are required. This is a space separated list in which each feature
030         *   is specified by its name optionally followed by a space and a
031         *   version number.  This method returns the first item of the list
032         *   returned by <code>getDOMImplementationList</code>.  As an example,
033         *   the string <code>"XML 3.0 Traversal +Events 2.0"</code> will
034         *   request a DOM implementation that supports the module "XML" for its
035         *   3.0 version, a module that support of the "Traversal" module for
036         *   any version, and the module "Events" for its 2.0 version. The
037         *   module "Events" must be accessible using the method
038         *   <code>Node.getFeature()</code> and
039         *   <code>DOMImplementation.getFeature()</code>.
040         * @return The first DOM implementation that support the desired
041         *   features, or <code>null</code> if this source has none.
042         */
043        public DOMImplementation getDOMImplementation(String features);
044    
045        /**
046         * A method to request a list of DOM implementations that support the
047         * specified features and versions, as specified in .
048         * @param features A string that specifies which features and versions
049         *   are required. This is a space separated list in which each feature
050         *   is specified by its name optionally followed by a space and a
051         *   version number. This is something like: "XML 3.0 Traversal +Events
052         *   2.0"
053         * @return A list of DOM implementations that support the desired
054         *   features.
055         */
056        public DOMImplementationList getDOMImplementationList(String features);
057    
058    }