1/*
2 * Copyright (c) 2004 World Wide Web Consortium,
3 *
4 * (Massachusetts Institute of Technology, European Research Consortium for
5 * Informatics and Mathematics, Keio University). All Rights Reserved. This
6 * work is distributed under the W3C(r) Software License [1] in the hope that
7 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
8 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
9 *
10 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
11 */
12
13package org.w3c.dom;
14
15/**
16 * This interface permits a DOM implementer to supply one or more
17 * implementations, based upon requested features and versions, as specified
18 * in . Each implemented <code>DOMImplementationSource</code> object is
19 * listed in the binding-specific list of available sources so that its
20 * <code>DOMImplementation</code> objects are made available.
21 * <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>.
22 * @since DOM Level 3
23 */
24public interface DOMImplementationSource {
25    /**
26     *  A method to request the first DOM implementation that supports the
27     * specified features.
28     * @param features  A string that specifies which features and versions
29     *   are required. This is a space separated list in which each feature
30     *   is specified by its name optionally followed by a space and a
31     *   version number.  This method returns the first item of the list
32     *   returned by <code>getDOMImplementationList</code>.  As an example,
33     *   the string <code>"XML 3.0 Traversal +Events 2.0"</code> will
34     *   request a DOM implementation that supports the module "XML" for its
35     *   3.0 version, a module that support of the "Traversal" module for
36     *   any version, and the module "Events" for its 2.0 version. The
37     *   module "Events" must be accessible using the method
38     *   <code>Node.getFeature()</code> and
39     *   <code>DOMImplementation.getFeature()</code>.
40     * @return The first DOM implementation that support the desired
41     *   features, or <code>null</code> if this source has none.
42     */
43    public DOMImplementation getDOMImplementation(String features);
44
45    /**
46     * A method to request a list of DOM implementations that support the
47     * specified features and versions, as specified in .
48     * @param features A string that specifies which features and versions
49     *   are required. This is a space separated list in which each feature
50     *   is specified by its name optionally followed by a space and a
51     *   version number. This is something like: "XML 3.0 Traversal +Events
52     *   2.0"
53     * @return A list of DOM implementations that support the desired
54     *   features.
55     */
56    public DOMImplementationList getDOMImplementationList(String features);
57
58}
59