| /******************************************************************************* |
| * Copyright (c) 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.html.core.internal.htmlcss; |
| |
| |
| |
| import org.eclipse.wst.css.core.internal.provisional.adapters.IStyleDeclarationAdapter; |
| import org.eclipse.wst.css.core.internal.provisional.adapters.IStyleSheetAdapter; |
| import org.eclipse.wst.css.core.internal.provisional.adapters.IStyleSheetListAdapter; |
| import org.eclipse.wst.html.core.internal.provisional.HTML40Namespace; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeAdapterFactory; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; |
| import org.eclipse.wst.xml.core.internal.contentmodel.CMAttributeDeclaration; |
| import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument; |
| import org.eclipse.wst.xml.core.internal.contentmodel.CMElementDeclaration; |
| import org.eclipse.wst.xml.core.internal.contentmodel.CMNamedNodeMap; |
| import org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery; |
| import org.eclipse.wst.xml.core.internal.modelquery.ModelQueryUtil; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| /** |
| */ |
| public class StyleAdapterFactory implements INodeAdapterFactory { |
| |
| private static StyleAdapterFactory instance = null; |
| |
| // private static String CSS_CONTENT_TYPE = "text/css";//$NON-NLS-1$ |
| /** |
| */ |
| private StyleAdapterFactory() { |
| super(); |
| } |
| |
| /** |
| */ |
| public INodeAdapter adapt(INodeNotifier notifier) { |
| if (notifier == null) |
| return null; |
| |
| Node node = (Node) notifier; |
| short nodeType = node.getNodeType(); |
| if (nodeType == Node.DOCUMENT_NODE) { |
| INodeAdapter adapter = notifier.getExistingAdapter(IStyleSheetListAdapter.class); |
| if (adapter != null) |
| return adapter; |
| HTMLDocumentAdapter newAdapter = new HTMLDocumentAdapter(); |
| newAdapter.setDocument((Document) node); |
| notifier.addAdapter(newAdapter); |
| return newAdapter; |
| } |
| if (nodeType != Node.ELEMENT_NODE) |
| return null; |
| |
| Element element = (Element) node; |
| String tagName = element.getTagName(); |
| if (tagName.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE)) { |
| if (!isTagAvailable(element.getOwnerDocument(), HTML40Namespace.ElementName.STYLE)) { |
| return null; |
| } |
| // String type = element.getAttribute(HTML40Namespace.ATTR_NAME_TYPE); |
| // if (type != null && ! type.equalsIgnoreCase(CSS_CONTENT_TYPE)) { |
| // return null; |
| // } |
| INodeAdapter adapter = notifier.getExistingAdapter(IStyleSheetAdapter.class); |
| if (adapter != null) |
| return adapter; |
| StyleElementAdapter newAdapter = new StyleElementAdapter(); |
| newAdapter.setElement(element); |
| notifier.addAdapter(newAdapter); |
| return newAdapter; |
| } |
| else if (tagName.equalsIgnoreCase(HTML40Namespace.ElementName.LINK)) { |
| if (!isTagAvailable(element.getOwnerDocument(), HTML40Namespace.ElementName.LINK)) { |
| return null; |
| } |
| INodeAdapter adapter = notifier.getExistingAdapter(IStyleSheetAdapter.class); |
| if (adapter != null) |
| return adapter; |
| LinkElementAdapter newAdapter = new LinkElementAdapter(); |
| newAdapter.setElement(element); |
| notifier.addAdapter(newAdapter); |
| return newAdapter; |
| } |
| |
| INodeAdapter adapter = notifier.getExistingAdapter(IStyleDeclarationAdapter.class); |
| if (adapter != null) |
| return adapter; |
| |
| if (!isAttributeAvailable(element, HTML40Namespace.ATTR_NAME_STYLE)) { |
| return null; |
| } |
| StyleAttrAdapter newAdapter = new StyleAttrAdapter(); |
| newAdapter.setElement(element); |
| notifier.addAdapter(newAdapter); |
| return newAdapter; |
| } |
| |
| /** |
| */ |
| public synchronized static StyleAdapterFactory getInstance() { |
| if (instance == null) |
| instance = new StyleAdapterFactory(); |
| return instance; |
| } |
| |
| /** |
| */ |
| public boolean isFactoryForType(Object type) { |
| return (type == IStyleSheetAdapter.class || type == IStyleDeclarationAdapter.class || type == IStyleSheetListAdapter.class); |
| } |
| |
| public void release() { |
| // default is to do nothing |
| } |
| |
| private static boolean isTagAvailable(Document document, String elementName) { |
| ModelQuery modelQuery = ModelQueryUtil.getModelQuery(document); |
| if (modelQuery != null) { |
| CMDocument cmdoc = modelQuery.getCorrespondingCMDocument(document); |
| CMNamedNodeMap map = cmdoc.getElements(); |
| if ((CMElementDeclaration) map.getNamedItem(elementName) != null) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| private static boolean isAttributeAvailable(Element element, String attrName) { |
| ModelQuery modelQuery = ModelQueryUtil.getModelQuery(element.getOwnerDocument()); |
| if (modelQuery != null) { |
| CMElementDeclaration decl = modelQuery.getCMElementDeclaration(element); |
| if (decl != null) { |
| CMNamedNodeMap map = decl.getAttributes(); |
| if ((CMAttributeDeclaration) map.getNamedItem(attrName) != null) { |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Overriding Object's clone() method |
| */ |
| public INodeAdapterFactory copy() { |
| return getInstance(); |
| } |
| |
| } |