diff options
Diffstat (limited to 'libjava/gnu/xml/dom/DomImpl.java')
| -rw-r--r-- | libjava/gnu/xml/dom/DomImpl.java | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/libjava/gnu/xml/dom/DomImpl.java b/libjava/gnu/xml/dom/DomImpl.java new file mode 100644 index 0000000..1a16de3 --- /dev/null +++ b/libjava/gnu/xml/dom/DomImpl.java @@ -0,0 +1,260 @@ +/* DomImpl.java -- + Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.xml.dom; + +import org.w3c.dom.Document; +import org.w3c.dom.DocumentType; +import org.w3c.dom.DOMException; +import org.w3c.dom.DOMImplementation; +import org.w3c.dom.Element; +import org.w3c.dom.ls.DOMImplementationLS; +import org.w3c.dom.ls.LSInput; +import org.w3c.dom.ls.LSOutput; +import org.w3c.dom.ls.LSParser; +import org.w3c.dom.ls.LSSerializer; +import gnu.xml.dom.ls.DomLSInput; +import gnu.xml.dom.ls.DomLSOutput; +import gnu.xml.dom.ls.DomLSParser; +import gnu.xml.dom.ls.DomLSSerializer; + +/** + * <p> "DOMImplementation" implementation. </p> + * + * <p> At this writing, the following features are supported: + * "XML" (L1, L2, L3), + * "Events" (L2), "MutationEvents" (L2), "USER-Events" (a conformant extension), + * "HTMLEvents" (L2), "UIEvents" (L2), "Traversal" (L2), "XPath" (L3), + * "LS" (L3) "LS-Async" (L3). + * It is possible to compile the package so it doesn't support some of these + * features (notably, Traversal). + * + * @author David Brownell + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +public class DomImpl + implements DOMImplementation, DOMImplementationLS +{ + + /** + * Constructs a DOMImplementation object which supports + * "XML" and other DOM Level 2 features. + */ + public DomImpl() + { + } + + /** + * <b>DOM L1</b> + * Returns true if the specified feature and version are + * supported. Note that the case of the feature name is ignored. + */ + public boolean hasFeature(String name, String version) + { + if (name.length() == 0) + { + return false; + } + name = name.toLowerCase(); + if (name.charAt(0) == '+') + { + name = name.substring(1); + } + + if ("xml".equals(name) || "core".equals(name)) + { + return (version == null || + "".equals(version) || + "1.0".equals(version) || + "2.0".equals(version) || + "3.0".equals(version)); + + } + else if ("ls".equals(name) || "ls-async".equals(name)) + { + return (version == null || + "".equals(version) || + "3.0".equals(version)); + } + else if ("events".equals(name) + || "mutationevents".equals(name) + || "uievents".equals(name) + // || "mouseevents".equals(name) + || "htmlevents".equals(name)) + { + return (version == null || + "".equals(version) || + "2.0".equals(version)); + + // Extension: "USER-" prefix event types can + // be created and passed through the DOM. + + } + else if ("user-events".equals(name)) + { + return (version == null || + "".equals(version) || + "0.1".equals(version)); + + // NOTE: "hasFeature" for events is here interpreted to + // mean the DOM can manufacture those sorts of events, + // since actually choosing to report the events is more + // often part of the environment or application. It's + // only really an issue for mutation events. + + } + else if (DomNode.reportMutations + && "traversal".equals(name)) + { + return (version == null || + "".equals(version) || + "2.0".equals(version)); + } + else if ("xpath".equals(name)) + { + return (version == null || + "".equals(version) || + "3.0".equals(version)); + } + + // views + // stylesheets + // css, css2 + // range + + return false; + } + + /** + * <b>DOM L2</b> + * Creates and returns a DocumentType, associated with this + * implementation. This DocumentType can have no associated + * objects(notations, entities) until the DocumentType is + * first associated with a document. + * + * <p> Note that there is no implication that this DTD will + * be parsed by the DOM, or ever have contents. Moreover, the + * DocumentType created here can only be added to a document by + * the createDocument method(below). <em>That means that the only + * portable way to create a Document object is to start parsing, + * queue comment and processing instruction (PI) nodes, and then only + * create a DOM Document after <b>(a)</b> it's known if a DocumentType + * object is needed, and <b>(b) the name and namespace of the root + * element is known. Queued comment and PI nodes would then be + * inserted appropriately in the document prologue, both before and + * after the DTD node, and additional attributes assigned to the + * root element.</em> + *(One hopes that the final DOM REC fixes this serious botch.) + */ + public DocumentType createDocumentType(String rootName, + String publicId, + String systemId) + // CR2 deleted internal subset, ensuring DocumentType + // is 100% useless instead of just 90% so. + { + DomDocument.checkNCName(rootName, false); + return new DomDoctype(this, rootName, publicId, systemId, null); + } + + /** + * <b>DOM L2</b> + * Creates and returns a Document, populated only with a root element and + * optionally a document type(if that was provided). + */ + public Document createDocument(String namespaceURI, + String rootName, + DocumentType doctype) + { + Document doc = new DomDocument(this); + Element root = null; + + if (rootName != null) + { + root = doc.createElementNS(namespaceURI, rootName); + if (rootName.startsWith("xmlns:")) + { + throw new DomEx(DomEx.NAMESPACE_ERR, "xmlns is reserved", null, 0); + } + } + // Bleech -- L2 seemingly _requires_ omission of xmlns attributes. + if (doctype != null) + { + doc.appendChild(doctype); // handles WRONG_DOCUMENT error + } + if (root != null) + { + doc.appendChild(root); + } + return doc; + } + + // DOM Level 3 + + public Object getFeature(String feature, String version) + { + if (hasFeature(feature, version)) + { + return this; + } + return null; + } + + // -- DOMImplementationLS -- + + public LSParser createLSParser(short mode, String schemaType) + throws DOMException + { + return new DomLSParser(mode, schemaType); + } + + public LSSerializer createLSSerializer() + { + return new DomLSSerializer(); + } + + public LSInput createLSInput() + { + return new DomLSInput(); + } + + public LSOutput createLSOutput() + { + return new DomLSOutput(); + } + +} + |