| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.utils; |
| |
| import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDDocument; |
| import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDElementDeclaration; |
| import org.eclipse.jst.pagedesigner.IJMTConstants; |
| import org.eclipse.wst.html.core.internal.contentmodel.HTMLElementDeclaration; |
| import org.eclipse.wst.html.core.internal.provisional.HTMLCMProperties; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; |
| 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.CMNode; |
| import org.eclipse.wst.xml.core.internal.provisional.contentmodel.CMNodeWrapper; |
| import org.eclipse.wst.xml.core.internal.ssemodelquery.ModelQueryAdapter; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Utility class to content model related information. |
| * |
| * @author mengbo |
| */ |
| public class CMUtil { |
| /** |
| * If the element is a custom tag, get the URI of it. If the element is a |
| * standard JSP tag, return null. If is not jsp tag, then return null |
| * |
| * @param element |
| * @return |
| */ |
| public static String getTagURI(CMElementDeclaration decl) { |
| if (decl instanceof CMNodeWrapper) { |
| decl = (CMElementDeclaration) ((CMNodeWrapper) decl) |
| .getOriginNode(); |
| } |
| if (decl instanceof TLDElementDeclaration) { |
| CMDocument doc = ((TLDElementDeclaration) decl).getOwnerDocument(); |
| if (doc instanceof TLDDocument) { |
| return ((TLDDocument) doc).getUri(); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Test whether this is the JSP core tag. |
| * |
| * @param decl |
| * @return |
| */ |
| public static boolean isJSP(CMElementDeclaration decl) { |
| if (!decl.supports(HTMLCMProperties.IS_JSP)) { |
| return false; |
| } |
| Boolean b = (Boolean) decl.getProperty(HTMLCMProperties.IS_JSP); |
| return b.booleanValue(); |
| } |
| |
| public static boolean isHTML(CMElementDeclaration decl) { |
| if (!isJSP(decl) && (decl instanceof HTMLElementDeclaration)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * get element declaration of specified element |
| * |
| * @param element |
| * @return null if can't get it. |
| */ |
| public static CMElementDeclaration getElementDeclaration(Element element) { |
| if (element == null) { |
| return null; |
| } |
| INodeNotifier notifier = (INodeNotifier) element.getOwnerDocument(); |
| if (notifier == null) { |
| return null; |
| } |
| ModelQueryAdapter mqa = (ModelQueryAdapter) notifier |
| .getAdapterFor(ModelQueryAdapter.class); |
| if (mqa == null) { |
| return null; |
| } |
| return mqa.getModelQuery().getCMElementDeclaration(element); |
| } |
| |
| public static TLDElementDeclaration getTLDElementDeclaration(Element element) { |
| CMNode decl = getElementDeclaration(element); |
| if (decl instanceof CMNodeWrapper) { |
| decl = ((CMNodeWrapper) decl).getOriginNode(); |
| } |
| if (decl instanceof TLDElementDeclaration) { |
| return (TLDElementDeclaration) decl; |
| } |
| return null; |
| } |
| |
| /** |
| * give an element, get its namespace URI. |
| * |
| * @param element |
| * @return |
| */ |
| public static String getElementNamespaceURI(Element element) { |
| CMElementDeclaration decl = getElementDeclaration(element); |
| if (decl == null) { |
| return null; |
| } |
| |
| if (isJSP(decl)) { |
| return IJMTConstants.URI_JSP; |
| } else if (isHTML(decl)) { |
| return IJMTConstants.URI_HTML; |
| } |
| |
| return getTagURI(decl); |
| } |
| |
| /** |
| * @param element |
| * @return |
| */ |
| public static boolean canHaveDirectTextChild(Element element) { |
| CMElementDeclaration decl = getElementDeclaration(element); |
| if (decl == null) { |
| return true; |
| } |
| int contentType = decl.getContentType(); |
| return contentType != CMElementDeclaration.ELEMENT |
| && contentType != CMElementDeclaration.EMPTY; |
| |
| } |
| } |