499 lines
13 KiB
Java
499 lines
13 KiB
Java
/* GnomeNode.java -
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Copyright (C) 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.libxmlj.dom;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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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.NamedNodeMap;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import org.w3c.dom.Text;
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import org.w3c.dom.UserDataHandler;
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import gnu.xml.libxmlj.util.StandaloneDocumentType;
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/**
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* A DOM node implemented in libxml2.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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class GnomeNode
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implements Node, Comparable
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{
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/**
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* Maps document pointers to a map of node pointers to node instances.
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*/
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static Map instances;
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/**
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* Retrieves the node instance for the specified node pointer.
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* This creates a new instance and adds it to the cache if required.
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* @param doc the document pointer
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* @param node the node pointer
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* @param type the node type
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*/
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static GnomeNode newInstance(final Object doc, final Object node,
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final int type)
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{
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if (doc == null)
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{
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throw new NullPointerException("doc");
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}
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if (node == null)
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{
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throw new NullPointerException("node");
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}
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if (instances == null)
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{
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instances = new HashMap();
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}
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Map docNodes = (Map) instances.get(doc);
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if (docNodes == null)
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{
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docNodes = new HashMap(1024); // TODO review optimal initial capacity
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instances.put(doc, docNodes);
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}
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GnomeNode nodeInstance = (GnomeNode) docNodes.get(node);
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if (nodeInstance != null)
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{
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return nodeInstance; // Return cached version
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}
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switch (type)
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{
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case ELEMENT_NODE:
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nodeInstance = new GnomeElement(node);
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break;
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case ATTRIBUTE_NODE:
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nodeInstance = new GnomeAttr(node);
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break;
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case TEXT_NODE:
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nodeInstance = new GnomeText(node);
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break;
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case CDATA_SECTION_NODE:
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nodeInstance = new GnomeCDATASection(node);
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break;
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case ENTITY_REFERENCE_NODE:
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nodeInstance = new GnomeEntityReference(node);
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break;
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case ENTITY_NODE:
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nodeInstance = new GnomeEntity(node);
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break;
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case PROCESSING_INSTRUCTION_NODE:
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nodeInstance = new GnomeProcessingInstruction(node);
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break;
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case COMMENT_NODE:
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nodeInstance = new GnomeComment(node);
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break;
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case DOCUMENT_NODE:
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nodeInstance = new GnomeDocument(node);
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break;
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case DOCUMENT_TYPE_NODE:
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nodeInstance = new GnomeDocumentType(node);
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break;
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case DOCUMENT_FRAGMENT_NODE:
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nodeInstance = new GnomeDocumentFragment(node);
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break;
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case NOTATION_NODE:
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nodeInstance = new GnomeNotation(node);
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break;
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default:
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throw new IllegalArgumentException("Unknown node type: " + type);
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}
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docNodes.put(node, nodeInstance);
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return nodeInstance;
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}
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/**
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* Frees the specified document.
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* This removes all its nodes from the cache.
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*/
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static void freeDocument(final Object doc)
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{
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if (instances == null || doc == null)
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{
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return;
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}
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instances.remove(doc);
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//System.out.println("Freed "+instances.remove(doc));
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}
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/**
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* xmlNodePtr
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*/
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final Object id;
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Map userData;
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Map userDataHandlers;
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GnomeNode(final Object id)
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{
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this.id = id;
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}
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public native String getNodeName();
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public native String getNodeValue()
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throws DOMException;
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public native void setNodeValue(String nodeValue)
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throws DOMException;
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public native short getNodeType();
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public native Node getParentNode();
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public NodeList getChildNodes()
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{
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return new GnomeNodeList(id);
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}
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public native Node getFirstChild();
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public native Node getLastChild();
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public native Node getPreviousSibling();
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public native Node getNextSibling();
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public NamedNodeMap getAttributes()
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{
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return new GnomeNamedNodeMap(id, 0);
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}
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public native Document getOwnerDocument();
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public Node insertBefore(Node newChild, Node refChild)
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throws DOMException
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{
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if (newChild instanceof StandaloneDocumentType)
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{
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DocumentType dt = (DocumentType) newChild;
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newChild = ((GnomeDocument) getOwnerDocument())
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.createDocumentType(dt.getName(), dt.getPublicId(),
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dt.getSystemId());
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}
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if (newChild == null)
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{
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throw new GnomeDOMException(DOMException.NOT_FOUND_ERR, null);
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}
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if (!(newChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.WRONG_DOCUMENT_ERR, null);
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}
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if (refChild == null || !(refChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.NOT_FOUND_ERR, null);
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}
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return xmljInsertBefore(newChild, refChild);
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}
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private native Node xmljInsertBefore(Node newChild, Node refChild)
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throws DOMException;
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public Node replaceChild(Node newChild, Node oldChild)
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throws DOMException
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{
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if (newChild instanceof StandaloneDocumentType)
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{
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DocumentType dt = (DocumentType) newChild;
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newChild = ((GnomeDocument) getOwnerDocument())
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.createDocumentType(dt.getName(), dt.getPublicId(),
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dt.getSystemId());
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}
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if (newChild == null)
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{
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throw new GnomeDOMException(DOMException.NOT_FOUND_ERR, null);
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}
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if (!(newChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.WRONG_DOCUMENT_ERR, newChild.toString());
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}
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if (oldChild == null || !(oldChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.NOT_FOUND_ERR, null);
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}
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return xmljReplaceChild(newChild, oldChild);
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}
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private native Node xmljReplaceChild(Node newChild, Node oldChild)
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throws DOMException;
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public Node removeChild(Node oldChild)
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throws DOMException
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{
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if (!(oldChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.WRONG_DOCUMENT_ERR, null);
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}
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return xmljRemoveChild(oldChild);
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}
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private native Node xmljRemoveChild(Node oldChild)
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throws DOMException;
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public Node appendChild(Node newChild)
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throws DOMException
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{
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if (newChild instanceof StandaloneDocumentType)
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{
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DocumentType dt = (DocumentType) newChild;
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newChild = ((GnomeDocument) getOwnerDocument())
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.createDocumentType(dt.getName(), dt.getPublicId(),
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dt.getSystemId());
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}
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if (!(newChild instanceof GnomeNode))
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{
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throw new GnomeDOMException(DOMException.WRONG_DOCUMENT_ERR, null);
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}
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return xmljAppendChild(newChild);
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}
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private native Node xmljAppendChild(Node newChild)
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throws DOMException;
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public native boolean hasChildNodes();
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public Node cloneNode(boolean deep)
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{
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Node ret = xmljCloneNode(deep);
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notifyUserDataHandlers(UserDataHandler.NODE_CLONED, this, ret);
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return ret;
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}
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private native Node xmljCloneNode(boolean deep);
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public native void normalize();
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public boolean isSupported(String feature, String version)
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{
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return getOwnerDocument().getImplementation()
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.hasFeature(feature, version);
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}
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public native String getNamespaceURI();
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public native String getPrefix();
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public native void setPrefix(String prefix)
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throws DOMException;
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public native String getLocalName();
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public native boolean hasAttributes();
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public int hashCode()
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{
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return id.hashCode();
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}
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public boolean equals(Object other)
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{
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if (other == this)
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{
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return true;
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}
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return (other instanceof GnomeNode &&
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((GnomeNode) other).id == id);
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}
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// DOM Level 3 methods
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public native String getBaseURI();
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public short compareDocumentPosition(Node other)
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throws DOMException
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{
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return (short) compareTo(other);
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}
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public final int compareTo(Object other)
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{
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if (other instanceof GnomeNode)
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{
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return xmljCompareTo(other);
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}
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return 0;
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}
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private native int xmljCompareTo(Object other);
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public String getTextContent()
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throws DOMException
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{
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switch (getNodeType())
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{
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case ELEMENT_NODE:
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case ATTRIBUTE_NODE:
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case ENTITY_NODE:
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case ENTITY_REFERENCE_NODE:
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case DOCUMENT_FRAGMENT_NODE:
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StringBuffer buffer = new StringBuffer();
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NodeList children = getChildNodes();
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int len = children.getLength();
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for (int i = 0; i < len; i++)
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{
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Node child = children.item(i);
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String textContent = child.getTextContent();
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if (textContent != null)
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{
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buffer.append(textContent);
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}
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}
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return buffer.toString();
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case TEXT_NODE:
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case CDATA_SECTION_NODE:
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case COMMENT_NODE:
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case PROCESSING_INSTRUCTION_NODE:
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return getNodeValue();
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default:
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return null;
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}
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}
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public void setTextContent(String textContent)
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throws DOMException
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{
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switch (getNodeType())
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{
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case ENTITY_REFERENCE_NODE:
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// entity references are read only
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throw new GnomeDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
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null);
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case ELEMENT_NODE:
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case ATTRIBUTE_NODE:
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case ENTITY_NODE:
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case DOCUMENT_FRAGMENT_NODE:
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NodeList children = getChildNodes();
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int len = children.getLength();
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for (int i = 0; i < len; i++)
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{
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Node child = children.item(i);
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removeChild(child);
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}
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if (textContent != null)
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{
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Text text = getOwnerDocument().createTextNode(textContent);
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appendChild(text);
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}
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break;
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case TEXT_NODE:
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case CDATA_SECTION_NODE:
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case COMMENT_NODE:
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case PROCESSING_INSTRUCTION_NODE:
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setNodeValue(textContent);
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break;
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}
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}
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public boolean isSameNode(Node other)
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{
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return equals(other);
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}
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public native String lookupPrefix(String namespaceURI);
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public native boolean isDefaultNamespace(String namespaceURI);
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public native String lookupNamespaceURI(String prefix);
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public native boolean isEqualNode(Node arg);
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public Object getFeature(String feature, String version)
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{
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return getOwnerDocument().getImplementation()
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.getFeature(feature, version);
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}
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public Object setUserData(String key, Object data, UserDataHandler handler)
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{
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// TODO handler
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if (userData == null)
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{
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userData = new HashMap();
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}
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if (handler != null)
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{
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if (userDataHandlers == null)
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{
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userDataHandlers = new HashMap();
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}
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userDataHandlers.put(key, handler);
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}
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return userData.put(key, data);
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}
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public Object getUserData(String key)
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{
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if (userData == null)
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{
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return null;
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}
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return userData.get(key);
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}
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void notifyUserDataHandlers(short op, Node src, Node dst)
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{
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if (userDataHandlers != null)
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{
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for (Iterator i = userDataHandlers.entrySet().iterator(); i.hasNext(); )
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{
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Map.Entry entry = (Map.Entry) i.next();
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String key = (String) entry.getKey();
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UserDataHandler handler = (UserDataHandler) entry.getValue();
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Object data = userData.get(key);
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handler.handle(op, key, data, src, dst);
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}
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}
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}
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public String toString()
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{
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StringBuffer buffer = new StringBuffer(getClass().getName());
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buffer.append("[nodeName=");
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buffer.append(getNodeName());
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buffer.append("]");
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return buffer.toString();
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}
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}
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