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From-SVN: r102074
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Tom Tromey
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/* DomImpl.java --
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Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.dom;
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import org.w3c.dom.Document;
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import org.w3c.dom.DocumentType;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.DOMImplementation;
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import org.w3c.dom.Element;
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import org.w3c.dom.ls.DOMImplementationLS;
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import org.w3c.dom.ls.LSInput;
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import org.w3c.dom.ls.LSOutput;
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import org.w3c.dom.ls.LSParser;
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import org.w3c.dom.ls.LSSerializer;
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import gnu.xml.dom.html2.DomHTMLImpl;
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import gnu.xml.dom.ls.DomLSInput;
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import gnu.xml.dom.ls.DomLSOutput;
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import gnu.xml.dom.ls.DomLSParser;
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import gnu.xml.dom.ls.DomLSSerializer;
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/**
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* <p> "DOMImplementation" implementation. </p>
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*
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* <p> At this writing, the following features are supported:
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* "XML" (L1, L2, L3),
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* "Events" (L2), "MutationEvents" (L2), "USER-Events" (a conformant extension),
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* "HTMLEvents" (L2), "UIEvents" (L2), "Traversal" (L2), "XPath" (L3),
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* "LS" (L3) "LS-Async" (L3).
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* It is possible to compile the package so it doesn't support some of these
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* features (notably, Traversal).
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*
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* @author David Brownell
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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public class DomImpl
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implements DOMImplementation, DOMImplementationLS
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{
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/**
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* Constructs a DOMImplementation object which supports
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* "XML" and other DOM Level 2 features.
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*/
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public DomImpl()
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{
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}
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/**
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* <b>DOM L1</b>
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* Returns true if the specified feature and version are
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* supported. Note that the case of the feature name is ignored.
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*/
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public boolean hasFeature(String name, String version)
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{
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if (name.length() == 0)
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{
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return false;
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}
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name = name.toLowerCase();
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if (name.charAt(0) == '+')
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{
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name = name.substring(1);
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}
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if ("xml".equals(name) || "core".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"1.0".equals(version) ||
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"2.0".equals(version) ||
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"3.0".equals(version));
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}
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else if ("ls".equals(name) || "ls-async".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"3.0".equals(version));
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}
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else if ("events".equals(name)
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|| "mutationevents".equals(name)
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|| "uievents".equals(name)
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// || "mouseevents".equals(name)
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|| "htmlevents".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"2.0".equals(version));
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// Extension: "USER-" prefix event types can
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// be created and passed through the DOM.
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}
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else if ("user-events".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"0.1".equals(version));
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// NOTE: "hasFeature" for events is here interpreted to
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// mean the DOM can manufacture those sorts of events,
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// since actually choosing to report the events is more
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// often part of the environment or application. It's
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// only really an issue for mutation events.
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}
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else if (DomNode.reportMutations
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&& "traversal".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"2.0".equals(version));
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}
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else if ("xpath".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"3.0".equals(version));
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}
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else if ("html".equals(name) || "xhtml".equals(name))
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{
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return (version == null ||
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"".equals(version) ||
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"2.0".equals(version));
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}
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// views
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// stylesheets
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// css, css2
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// range
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return false;
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}
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/**
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* <b>DOM L2</b>
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* Creates and returns a DocumentType, associated with this
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* implementation. This DocumentType can have no associated
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* objects(notations, entities) until the DocumentType is
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* first associated with a document.
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*
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* <p> Note that there is no implication that this DTD will
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* be parsed by the DOM, or ever have contents. Moreover, the
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* DocumentType created here can only be added to a document by
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* the createDocument method(below). <em>That means that the only
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* portable way to create a Document object is to start parsing,
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* queue comment and processing instruction (PI) nodes, and then only
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* create a DOM Document after <b>(a)</b> it's known if a DocumentType
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* object is needed, and <b>(b) the name and namespace of the root
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* element is known. Queued comment and PI nodes would then be
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* inserted appropriately in the document prologue, both before and
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* after the DTD node, and additional attributes assigned to the
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* root element.</em>
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*(One hopes that the final DOM REC fixes this serious botch.)
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*/
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public DocumentType createDocumentType(String rootName,
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String publicId,
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String systemId)
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// CR2 deleted internal subset, ensuring DocumentType
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// is 100% useless instead of just 90% so.
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{
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DomDocument.checkNCName(rootName, false);
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return new DomDoctype(this, rootName, publicId, systemId, null);
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}
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/**
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* <b>DOM L2</b>
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* Creates and returns a Document, populated only with a root element and
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* optionally a document type(if that was provided).
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*/
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public Document createDocument(String namespaceURI,
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String rootName,
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DocumentType doctype)
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{
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Document doc = createDocument();
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Element root = null;
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if (rootName != null)
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{
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root = doc.createElementNS(namespaceURI, rootName);
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if (rootName.startsWith("xmlns:"))
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{
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throw new DomDOMException(DOMException.NAMESPACE_ERR,
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"xmlns is reserved", null, 0);
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}
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}
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// Bleech -- L2 seemingly _requires_ omission of xmlns attributes.
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if (doctype != null)
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{
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doc.appendChild(doctype); // handles WRONG_DOCUMENT error
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}
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if (root != null)
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{
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doc.appendChild(root);
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}
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return doc;
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}
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protected Document createDocument()
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{
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return new DomDocument(this);
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}
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// DOM Level 3
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public Object getFeature(String feature, String version)
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{
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if (hasFeature(feature, version))
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{
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if ("html".equalsIgnoreCase(feature) ||
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"xhtml".equalsIgnoreCase(feature))
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{
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return new DomHTMLImpl();
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}
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return this;
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}
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return null;
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}
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// -- DOMImplementationLS --
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public LSParser createLSParser(short mode, String schemaType)
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throws DOMException
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{
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return new DomLSParser(mode, schemaType);
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}
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public LSSerializer createLSSerializer()
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{
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return new DomLSSerializer();
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}
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public LSInput createLSInput()
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{
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return new DomLSInput();
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}
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public LSOutput createLSOutput()
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{
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return new DomLSOutput();
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}
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}
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