001: /*
002: * The Apache Software License, Version 1.1
003: *
004: *
005: * Copyright (c) 1999,2000 The Apache Software Foundation. All rights
006: * reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: *
012: * 1. Redistributions of source code must retain the above copyright
013: * notice, this list of conditions and the following disclaimer.
014: *
015: * 2. Redistributions in binary form must reproduce the above copyright
016: * notice, this list of conditions and the following disclaimer in
017: * the documentation and/or other materials provided with the
018: * distribution.
019: *
020: * 3. The end-user documentation included with the redistribution,
021: * if any, must include the following acknowledgment:
022: * "This product includes software developed by the
023: * Apache Software Foundation (http://www.apache.org/)."
024: * Alternately, this acknowledgment may appear in the software itself,
025: * if and wherever such third-party acknowledgments normally appear.
026: *
027: * 4. The names "Xerces" and "Apache Software Foundation" must
028: * not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact apache@apache.org.
031: *
032: * 5. Products derived from this software may not be called "Apache",
033: * nor may "Apache" appear in their name, without prior written
034: * permission of the Apache Software Foundation.
035: *
036: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This software consists of voluntary contributions made by many
051: * individuals on behalf of the Apache Software Foundation and was
052: * originally based on software copyright (c) 1999, International
053: * Business Machines, Inc., http://www.apache.org. For more
054: * information on the Apache Software Foundation, please see
055: * <http://www.apache.org/>.
056: */
057: package org.apache.html.dom;
058:
059: import org.w3c.dom.DOMException;
060: import org.w3c.dom.html.*;
061: import org.apache.xerces.dom.DOMImplementationImpl;
062:
063: /**
064: * Provides number of methods for performing operations that are independent
065: * of any particular instance of the document object model. This class is
066: * unconstructable, the only way to obtain an instance of a DOM implementation
067: * is by calling the static method {@link #getDOMImplementation}.
068: *
069: * @version $Revision: 1.3 $ $Date: 2000/02/10 04:00:09 $
070: * @author <a href="mailto:arkin@exoffice.com">Assaf Arkin</a>
071: * @see org.w3c.dom.DOMImplementation
072: */
073: public class HTMLDOMImplementationImpl extends DOMImplementationImpl
074: implements HTMLDOMImplementation {
075:
076: /**
077: * Holds a reference to the single instance of the DOM implementation.
078: * Only one instance is required since this class is multiple entry.
079: */
080: private static HTMLDOMImplementation _instance = new HTMLDOMImplementationImpl();
081:
082: /**
083: * Private constructor assures that an object of this class cannot
084: * be created. The only way to obtain an object is by calling {@link
085: * #getDOMImplementation}.
086: */
087: private HTMLDOMImplementationImpl() {
088: }
089:
090: /**
091: * Create a new HTML document of the specified <TT>TITLE</TT> text.
092: *
093: * @param title The document title text
094: * @return New HTML document
095: */
096: public final HTMLDocument createHTMLDocument(String title)
097: throws DOMException {
098: HTMLDocument doc;
099:
100: if (title == null)
101: throw new NullPointerException(
102: "HTM014 Argument 'title' is null.");
103: doc = new HTMLDocumentImpl();
104: doc.setTitle(title);
105: return doc;
106: }
107:
108: /**
109: * Returns an instance of a {@link HTMLDOMImplementation} that can be
110: * used to perform operations that are not specific to a particular
111: * document instance, e.g. to create a new document.
112: *
113: * @return Reference to a valid DOM implementation
114: */
115: public static HTMLDOMImplementation getHTMLDOMImplementation() {
116: return _instance;
117: }
118:
119: }
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