| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 1999-2002,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.sun.org.apache.xerces.internal.dom; |
| |
| import org.w3c.dom.DOMException; |
| import org.w3c.dom.DOMImplementation; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.DocumentType; |
| import org.w3c.dom.Element; |
| |
| |
| |
| /** |
| * The DOMImplementation class is description of a particular |
| * implementation of the Document Object Model. As such its data is |
| * static, shared by all instances of this implementation. |
| * <P> |
| * The DOM API requires that it be a real object rather than static |
| * methods. However, there's nothing that says it can't be a singleton, |
| * so that's how I've implemented it. |
| * |
| * @xerces.internal |
| * |
| * @since PR-DOM-Level-1-19980818. |
| */ |
| public class DOMImplementationImpl extends CoreDOMImplementationImpl |
| implements DOMImplementation { |
| |
| // |
| // Data |
| // |
| |
| // static |
| |
| /** Dom implementation singleton. */ |
| static DOMImplementationImpl singleton = new DOMImplementationImpl(); |
| |
| |
| // |
| // Public methods |
| // |
| |
| /** NON-DOM: Obtain and return the single shared object */ |
| public static DOMImplementation getDOMImplementation() { |
| return singleton; |
| } |
| |
| // |
| // DOMImplementation methods |
| // |
| |
| /** |
| * Test if the DOM implementation supports a specific "feature" -- |
| * currently meaning language and level thereof. |
| * |
| * @param feature The package name of the feature to test. |
| * In Level 1, supported values are "HTML" and "XML" (case-insensitive). |
| * At this writing, com.sun.org.apache.xerces.internal.dom supports only XML. |
| * |
| * @param version The version number of the feature being tested. |
| * This is interpreted as "Version of the DOM API supported for the |
| * specified Feature", and in Level 1 should be "1.0" |
| * |
| * @return true iff this implementation is compatable with the |
| * specified feature and version. |
| */ |
| public boolean hasFeature(String feature, String version) { |
| if (feature == null || feature.length() == 0) { |
| return false; |
| } |
| |
| boolean result = super.hasFeature(feature, version); |
| if (!result) { |
| boolean anyVersion = version == null || version.length() == 0; |
| if (feature.startsWith("+")) { |
| feature = feature.substring(1); |
| } |
| return ( |
| (feature.equalsIgnoreCase("Events") |
| && (anyVersion || version.equals("2.0"))) |
| || (feature.equalsIgnoreCase("MutationEvents") |
| && (anyVersion || version.equals("2.0"))) |
| || (feature.equalsIgnoreCase("Traversal") |
| && (anyVersion || version.equals("2.0"))) |
| || (feature.equalsIgnoreCase("Range") |
| && (anyVersion || version.equals("2.0"))) |
| || (feature.equalsIgnoreCase("MutationEvents") |
| && (anyVersion || version.equals("2.0")))); |
| } |
| return result; |
| } // hasFeature(String,String):boolean |
| |
| |
| |
| /** |
| * Introduced in DOM Level 2. <p> |
| * |
| * Creates an XML Document object of the specified type with its document |
| * element. |
| * |
| * @param namespaceURI The namespace URI of the document |
| * element to create, or null. |
| * @param qualifiedName The qualified name of the document |
| * element to create. |
| * @param doctype The type of document to be created or null.<p> |
| * |
| * When doctype is not null, its |
| * Node.ownerDocument attribute is set to |
| * the document being created. |
| * @return Document A new Document object. |
| * @throws DOMException WRONG_DOCUMENT_ERR: Raised if doctype has |
| * already been used with a different document. |
| * @since WD-DOM-Level-2-19990923 |
| */ |
| public Document createDocument(String namespaceURI, |
| String qualifiedName, |
| DocumentType doctype) |
| throws DOMException |
| { |
| if(namespaceURI == null && qualifiedName == null && doctype == null){ |
| //if namespaceURI, qualifiedName and doctype are null, returned document is empty with |
| //no document element |
| return new DocumentImpl(); |
| } |
| else if (doctype != null && doctype.getOwnerDocument() != null) { |
| String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null); |
| throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg); |
| } |
| DocumentImpl doc = new DocumentImpl(doctype); |
| Element e = doc.createElementNS( namespaceURI, qualifiedName); |
| doc.appendChild(e); |
| return doc; |
| } |
| |
| |
| } // class DOMImplementationImpl |