bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/text/StructuredTextPartitionerForHTML.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004, 2011 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.text;

 import java.util.Locale;

 import org.eclipse.jface.text.IDocumentPartitioner;
 import org.eclipse.wst.css.core.text.ICSSPartitions;
 import org.eclipse.wst.html.core.internal.provisional.HTML40Namespace;
 import org.eclipse.wst.html.core.text.IHTMLPartitions;
 import org.eclipse.wst.sse.core.internal.parser.ForeignRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredTextPartitioner;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
 import org.eclipse.wst.sse.core.internal.text.IRegionComparible;
 import org.eclipse.wst.sse.core.internal.text.rules.IStructuredTypedRegion;
 import org.eclipse.wst.sse.core.internal.util.ScriptLanguageKeys;
 import org.eclipse.wst.sse.core.utils.StringUtils;
 import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
 import org.eclipse.wst.xml.core.internal.text.rules.StructuredTextPartitionerForXML;

 /**
  * Document partitioner for HTML. Client-side scripts of type JavaScript are
  * reported as ST_SCRIPT, all others for <script language="foo" type="foo2">
  * as SCRIPT.language:FOO and SCRIPT.type:FOO2.
  */
 public class StructuredTextPartitionerForHTML extends StructuredTextPartitionerForXML implements IStructuredTextPartitioner {

 	private final static String[] configuredContentTypes = new String[]{IHTMLPartitions.HTML_DEFAULT, IHTMLPartitions.HTML_DECLARATION, IHTMLPartitions.HTML_COMMENT, IHTMLPartitions.SCRIPT, ICSSPartitions.STYLE,IHTMLPartitions.SCRIPT_EVENTHANDLER};

 	public static final String JAVASCRIPT = "javascript"; //$NON-NLS-1$
 	public static final String JAVASCRIPT_APPLICATION = "application/x-javascript"; //$NON-NLS-1$

 	private static final String[] EVENT_ATTRIBUTE_NAMES =
 		{HTML40Namespace.ATTR_NAME_ONCLICK,
 		HTML40Namespace.ATTR_NAME_ONDBLCLICK,
 		HTML40Namespace.ATTR_NAME_ONMOUSEDOWN,
 		HTML40Namespace.ATTR_NAME_ONMOUSEUP,
 		HTML40Namespace.ATTR_NAME_ONMOUSEOVER,
 		HTML40Namespace.ATTR_NAME_ONMOUSEMOVE,
 		HTML40Namespace.ATTR_NAME_ONMOUSEOUT,
 		HTML40Namespace.ATTR_NAME_ONKEYPRESS,
 		HTML40Namespace.ATTR_NAME_ONKEYDOWN,
 		HTML40Namespace.ATTR_NAME_ONKEYUP,
 		HTML40Namespace.ATTR_NAME_ONHELP,
 		HTML40Namespace.ATTR_NAME_ONBLUR,
 		HTML40Namespace.ATTR_NAME_ONFOCUS,
 		HTML40Namespace.ATTR_NAME_ONLOAD,
 		HTML40Namespace.ATTR_NAME_ONUNLOAD,
 		HTML40Namespace.ATTR_NAME_ONSUBMIT};

 	/** array of style attribute names */
 	private static final String[] STYLE_ATTRIBUTE_NAMES =  {HTML40Namespace.ATTR_NAME_STYLE};

 	public StructuredTextPartitionerForHTML() {
 		super();
 	}

 	public IStructuredTypedRegion createPartition(int offset, int length, String type) {
 		if (type == IHTMLPartitions.SCRIPT) {
 			IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
 			if (node != null) {
 				String stype = getScriptingPartitionType(node);
 				return super.createPartition(offset, length, stype);
 			}
 		}
 		return super.createPartition(offset, length, type);
 	}

 	protected void setInternalPartition(int offset, int length, String type) {
 		String localType = type;
 		if (type == IHTMLPartitions.SCRIPT) {
 			IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
 			if (node != null) {
 				localType = getScriptingPartitionType(node);
 			}
 		}
 		super.setInternalPartition(offset, length, localType);
 	}

 	private String getScriptingPartitionType(IStructuredDocumentRegion coreNode) {
 		String language = null;
 		String type = null;
 		String result = IHTMLPartitions.SCRIPT;
 		IStructuredDocumentRegion node = coreNode;
 		ITextRegion attrNameRegion = null;
 		while (node != null && isValidScriptingRegionType(node.getType())) {
 			node = node.getPrevious();
 		}

 		ITextRegionList regions = node.getRegions();
 		if (regions.size() > 4 && regions.get(1).getType() == DOMRegionContext.XML_TAG_NAME) {
 			ITextRegion potentialLanguageRegion = regions.get(1);
 			String potentialLanguageString = node.getText(potentialLanguageRegion);
 			if (potentialLanguageString.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT)) {
 				for (int i = 0; i < regions.size(); i++) {
 					ITextRegion region = regions.get(i);
 					String regionType = region.getType();
 					if (regionType == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME)
 						attrNameRegion = region;
 					else if (regionType == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) {
 						String attrName = node.getText(attrNameRegion);
 						if (attrName.equalsIgnoreCase(HTML40Namespace.ATTR_NAME_LANGUAGE))
 							language = StringUtils.strip(node.getText(region));
 						else if (attrName.equalsIgnoreCase(HTML40Namespace.ATTR_NAME_TYPE)) {
 							type = StringUtils.strip(node.getText(region));
 							/*
 							 * Avoid partition names built with MIME subtypes,
 							 * e.g. type="text/javascript;e4x=1"
 							 */
 							if (type != null) {
 								int index = type.indexOf(';');
 								if (index > 1)
 									type = type.substring(0, index);
 							}
 							break;
 						}
 						attrNameRegion = null;
 					}
 				}
 			}
 		}
 		if (type != null)
 			result = lookupScriptType(type);
 		else if (language != null)
 			result = lookupScriptLanguage(language);
 		return result;
 	}

 	private boolean isValidScriptingRegionType(String type) {
 		return type == DOMRegionContext.BLOCK_TEXT || type == DOMRegionContext.XML_CDATA_OPEN || type == DOMRegionContext.XML_CDATA_TEXT || type == DOMRegionContext.XML_CDATA_CLOSE;
 	}

 	protected void initLegalContentTypes() {
 		fSupportedTypes = getConfiguredContentTypes();
 	}

 	private String lookupScriptType(String type) {
 		for (int i = 0; i < ScriptLanguageKeys.JAVASCRIPT_MIME_TYPE_KEYS.length; i++)
 			if (ScriptLanguageKeys.JAVASCRIPT_MIME_TYPE_KEYS[i].equalsIgnoreCase(type))
 				return IHTMLPartitions.SCRIPT;
 		return IHTMLPartitions.SCRIPT + ".type." + type.toUpperCase(Locale.ENGLISH); //$NON-NLS-1$
 	}

 	private String lookupScriptLanguage(String language) {
 		for (int i = 0; i < ScriptLanguageKeys.JAVASCRIPT_LANGUAGE_KEYS.length; i++)
 			if (ScriptLanguageKeys.JAVASCRIPT_LANGUAGE_KEYS[i].equalsIgnoreCase(language))
 				return IHTMLPartitions.SCRIPT;
 		return IHTMLPartitions.SCRIPT + ".language." + language.toUpperCase(Locale.ENGLISH); //$NON-NLS-1$
 	}

 	public String getPartitionType(ITextRegion region, int offset) {
 		String result = null;
 		if (region.getType() == DOMRegionContext.XML_COMMENT_TEXT || region.getType() == DOMRegionContext.XML_COMMENT_OPEN || region.getType() == DOMRegionContext.XML_COMMENT_CLOSE)
 			result = IHTMLPartitions.HTML_COMMENT;
 		else if (region.getType() == DOMRegionContext.XML_DOCTYPE_DECLARATION || region.getType() == DOMRegionContext.XML_DECLARATION_OPEN)
 			result = IHTMLPartitions.HTML_DECLARATION;
 		else if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE && isScriptAttributeValue(region, offset))
 			result = IHTMLPartitions.SCRIPT_EVENTHANDLER;
 		else if (isStyleAttributeValue(region, offset))
 			result = ICSSPartitions.STYLE;
 		else
 			result = super.getPartitionType(region, offset);
 		return result;
 	}

 	public String getPartitionTypeBetween(IStructuredDocumentRegion previousNode, IStructuredDocumentRegion nextNode) {

 		ITextRegion previousStartTagNameRegion = null;
 		ITextRegion nextEndTagNameRegion = null;

 		ITextRegion[] regions = previousNode.getRegions().toArray();
 		for (int i = 0; i < regions.length; i++) {
 			if(regions[i].getType() == DOMRegionContext.XML_TAG_NAME) {
 				previousStartTagNameRegion = regions[i];
 				break;
 			}
 		}
 		regions = nextNode.getRegions().toArray();
 		for (int i = 0; i < regions.length; i++) {
 			if(regions[i].getType() == DOMRegionContext.XML_TAG_NAME) {
 				nextEndTagNameRegion = regions[i];
 				break;
 			}
 		}

 		if(previousStartTagNameRegion == null || nextEndTagNameRegion == null)
 			return IHTMLPartitions.HTML_DEFAULT;

 		String name1 = previousNode.getText(previousStartTagNameRegion);
 		String name2 = nextNode.getText(nextEndTagNameRegion);
 		if (name1.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT) && name2.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT))
 			//			return ST_SCRIPT;
 			return getScriptingPartitionType(fStructuredDocument.getRegionAtCharacterOffset(previousNode.getStartOffset(previousStartTagNameRegion)));
 		else if (name1.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE) && name2.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE))
 			return ICSSPartitions.STYLE;
 		return super.getPartitionTypeBetween(previousNode, nextNode);
 	}


 	protected String getPartitionType(ForeignRegion region, int offset) {
 		String tagname = region.getSurroundingTag();
 		String result = null;
 		// tagname should not be null,
 		// but see https://w3.opensource.ibm.com/bugzilla/show_bug.cgi?id=4911
 		if (tagname == null) {
 			result = getUnknown();
 		}
 		else if (tagname.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT))
 			result = IHTMLPartitions.SCRIPT;
 		else if (tagname.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE) || isStyleAttributeValue(region,offset))
 			result = ICSSPartitions.STYLE;
 		else if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE && isScriptAttributeValue(region, offset))
 			result = IHTMLPartitions.SCRIPT_EVENTHANDLER;
 		else
 			result = super.getPartitionType(region, offset);

 		return result;
 	}

 	public String getDefaultPartitionType() {
 		return IHTMLPartitions.HTML_DEFAULT;
 	}

 	public IDocumentPartitioner newInstance() {
 		return new StructuredTextPartitionerForHTML();
 	}

 	/**
 	 * @return
 	 */
 	public static String[] getConfiguredContentTypes() {
 		return configuredContentTypes;
 	}

 	private boolean isScriptAttributeValue(ITextRegion region, int offset) {
 		if (region.getType() != DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE)
 			return false;

 		return isAttributeNameForValueInArray(EVENT_ATTRIBUTE_NAMES, region, offset);
 	}

 	/**
 	 * @param region {@link ITextRegion} containing <code>offset</code>
 	 * @param offset offset in the given <code>region</code> to check if it is in
 	 * the attribute value region of a style attribute
 	 * @return <code>true</code> if the given offset in the given region is
 	 * in the value region of a style attribute, <code>false</code> otherwise
 	 */
 	private boolean isStyleAttributeValue(ITextRegion region, int offset) {
 		boolean isStyleAttributeValue = false;
 		if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) {
 			isStyleAttributeValue = isAttributeNameForValueInArray(STYLE_ATTRIBUTE_NAMES, region, offset);
 		}

 		return isStyleAttributeValue;
 	}

 	/**
 	 * <p>determines if the attribute name associated with the given attribute region
 	 * is in the given array of attribute names</p>
 	 *
 	 * @param attributeNames determine if the attribute name associated with the given offset
 	 * is in this array of attribute names
 	 * @param attrValueRegion {@link ITextRegion} of the attribute region containing the given offset
 	 * @param offset offset in an attribute region to determine if it is in the list of given attribute names
 	 * @return <code>true</code> if the attribute name associated with the given offset is in the given
 	 * list of attribute names, <code>false</code> otherwise
 	 */
 	private boolean isAttributeNameForValueInArray(String[] attributeNames, ITextRegion attrValueRegion, int offset) {
 		IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
 		ITextRegionList regionList = node.getRegions();
 		int currentIndex = regionList.indexOf(attrValueRegion);

 		/*
 		 * 4 is the minimum index allowing for the tag's open, name, attribute
 		 * name and equals character to appear first
 		 */
 		if (currentIndex < 4)
 			return false;
 		ITextRegion tagAttrNameRegion = regionList.get(currentIndex - 2);

 		boolean foundAttributeName = false;
 		if (fStructuredDocument instanceof IRegionComparible) {
 			int start = node.getStartOffset(tagAttrNameRegion);
 			for (int i = 0; !foundAttributeName && i < attributeNames.length; i++) {
 				foundAttributeName = ((IRegionComparible) fStructuredDocument).regionMatchesIgnoreCase(start, tagAttrNameRegion.getTextLength(), attributeNames[i]);
 			}
 		}
 		else {
 			String tagAttrName = node.getText(tagAttrNameRegion);
 			foundAttributeName = StringUtils.contains(attributeNames, tagAttrName, false);
 		}
 		return foundAttributeName;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.wst.sse.core.internal.text.rules.StructuredTextPartitioner#getParserSpecificPreviousRegion(org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion)
 	 */
 	protected IStructuredDocumentRegion getParserSpecificPreviousRegion(IStructuredDocumentRegion currentRegion) {
 		if (currentRegion == null)
 			return null;
 		do {
 			currentRegion = currentRegion.getPrevious();
 		} while (currentRegion != null && currentRegion.getType().equals(DOMRegionContext.BLOCK_TEXT));

 		return currentRegion;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004, 2011 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.text;

	import java.util.Locale;

	import org.eclipse.jface.text.IDocumentPartitioner;
	import org.eclipse.wst.css.core.text.ICSSPartitions;
	import org.eclipse.wst.html.core.internal.provisional.HTML40Namespace;
	import org.eclipse.wst.html.core.text.IHTMLPartitions;
	import org.eclipse.wst.sse.core.internal.parser.ForeignRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredTextPartitioner;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
	import org.eclipse.wst.sse.core.internal.text.IRegionComparible;
	import org.eclipse.wst.sse.core.internal.text.rules.IStructuredTypedRegion;
	import org.eclipse.wst.sse.core.internal.util.ScriptLanguageKeys;
	import org.eclipse.wst.sse.core.utils.StringUtils;
	import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
	import org.eclipse.wst.xml.core.internal.text.rules.StructuredTextPartitionerForXML;

	/**
	* Document partitioner for HTML. Client-side scripts of type JavaScript are
	* reported as ST_SCRIPT, all others for <script language="foo" type="foo2">
	* as SCRIPT.language:FOO and SCRIPT.type:FOO2.
	*/
	public class StructuredTextPartitionerForHTML extends StructuredTextPartitionerForXML implements IStructuredTextPartitioner {

	private final static String[] configuredContentTypes = new String[]{IHTMLPartitions.HTML_DEFAULT, IHTMLPartitions.HTML_DECLARATION, IHTMLPartitions.HTML_COMMENT, IHTMLPartitions.SCRIPT, ICSSPartitions.STYLE,IHTMLPartitions.SCRIPT_EVENTHANDLER};

	public static final String JAVASCRIPT = "javascript"; //$NON-NLS-1$
	public static final String JAVASCRIPT_APPLICATION = "application/x-javascript"; //$NON-NLS-1$

	private static final String[] EVENT_ATTRIBUTE_NAMES =
	{HTML40Namespace.ATTR_NAME_ONCLICK,
	HTML40Namespace.ATTR_NAME_ONDBLCLICK,
	HTML40Namespace.ATTR_NAME_ONMOUSEDOWN,
	HTML40Namespace.ATTR_NAME_ONMOUSEUP,
	HTML40Namespace.ATTR_NAME_ONMOUSEOVER,
	HTML40Namespace.ATTR_NAME_ONMOUSEMOVE,
	HTML40Namespace.ATTR_NAME_ONMOUSEOUT,
	HTML40Namespace.ATTR_NAME_ONKEYPRESS,
	HTML40Namespace.ATTR_NAME_ONKEYDOWN,
	HTML40Namespace.ATTR_NAME_ONKEYUP,
	HTML40Namespace.ATTR_NAME_ONHELP,
	HTML40Namespace.ATTR_NAME_ONBLUR,
	HTML40Namespace.ATTR_NAME_ONFOCUS,
	HTML40Namespace.ATTR_NAME_ONLOAD,
	HTML40Namespace.ATTR_NAME_ONUNLOAD,
	HTML40Namespace.ATTR_NAME_ONSUBMIT};

	/** array of style attribute names */
	private static final String[] STYLE_ATTRIBUTE_NAMES = {HTML40Namespace.ATTR_NAME_STYLE};

	public StructuredTextPartitionerForHTML() {
	super();
	}

	public IStructuredTypedRegion createPartition(int offset, int length, String type) {
	if (type == IHTMLPartitions.SCRIPT) {
	IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
	if (node != null) {
	String stype = getScriptingPartitionType(node);
	return super.createPartition(offset, length, stype);
	}
	}
	return super.createPartition(offset, length, type);
	}

	protected void setInternalPartition(int offset, int length, String type) {
	String localType = type;
	if (type == IHTMLPartitions.SCRIPT) {
	IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
	if (node != null) {
	localType = getScriptingPartitionType(node);
	}
	}
	super.setInternalPartition(offset, length, localType);
	}

	private String getScriptingPartitionType(IStructuredDocumentRegion coreNode) {
	String language = null;
	String type = null;
	String result = IHTMLPartitions.SCRIPT;
	IStructuredDocumentRegion node = coreNode;
	ITextRegion attrNameRegion = null;
	while (node != null && isValidScriptingRegionType(node.getType())) {
	node = node.getPrevious();
	}

	ITextRegionList regions = node.getRegions();
	if (regions.size() > 4 && regions.get(1).getType() == DOMRegionContext.XML_TAG_NAME) {
	ITextRegion potentialLanguageRegion = regions.get(1);
	String potentialLanguageString = node.getText(potentialLanguageRegion);
	if (potentialLanguageString.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT)) {
	for (int i = 0; i < regions.size(); i++) {
	ITextRegion region = regions.get(i);
	String regionType = region.getType();
	if (regionType == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME)
	attrNameRegion = region;
	else if (regionType == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) {
	String attrName = node.getText(attrNameRegion);
	if (attrName.equalsIgnoreCase(HTML40Namespace.ATTR_NAME_LANGUAGE))
	language = StringUtils.strip(node.getText(region));
	else if (attrName.equalsIgnoreCase(HTML40Namespace.ATTR_NAME_TYPE)) {
	type = StringUtils.strip(node.getText(region));
	/*
	* Avoid partition names built with MIME subtypes,
	* e.g. type="text/javascript;e4x=1"
	*/
	if (type != null) {
	int index = type.indexOf(';');
	if (index > 1)
	type = type.substring(0, index);
	}
	break;
	}
	attrNameRegion = null;
	}
	}
	}
	}
	if (type != null)
	result = lookupScriptType(type);
	else if (language != null)
	result = lookupScriptLanguage(language);
	return result;
	}

	private boolean isValidScriptingRegionType(String type) {
	return type == DOMRegionContext.BLOCK_TEXT \|\| type == DOMRegionContext.XML_CDATA_OPEN \|\| type == DOMRegionContext.XML_CDATA_TEXT \|\| type == DOMRegionContext.XML_CDATA_CLOSE;
	}

	protected void initLegalContentTypes() {
	fSupportedTypes = getConfiguredContentTypes();
	}

	private String lookupScriptType(String type) {
	for (int i = 0; i < ScriptLanguageKeys.JAVASCRIPT_MIME_TYPE_KEYS.length; i++)
	if (ScriptLanguageKeys.JAVASCRIPT_MIME_TYPE_KEYS[i].equalsIgnoreCase(type))
	return IHTMLPartitions.SCRIPT;
	return IHTMLPartitions.SCRIPT + ".type." + type.toUpperCase(Locale.ENGLISH); //$NON-NLS-1$
	}

	private String lookupScriptLanguage(String language) {
	for (int i = 0; i < ScriptLanguageKeys.JAVASCRIPT_LANGUAGE_KEYS.length; i++)
	if (ScriptLanguageKeys.JAVASCRIPT_LANGUAGE_KEYS[i].equalsIgnoreCase(language))
	return IHTMLPartitions.SCRIPT;
	return IHTMLPartitions.SCRIPT + ".language." + language.toUpperCase(Locale.ENGLISH); //$NON-NLS-1$
	}

	public String getPartitionType(ITextRegion region, int offset) {
	String result = null;
	if (region.getType() == DOMRegionContext.XML_COMMENT_TEXT \|\| region.getType() == DOMRegionContext.XML_COMMENT_OPEN \|\| region.getType() == DOMRegionContext.XML_COMMENT_CLOSE)
	result = IHTMLPartitions.HTML_COMMENT;
	else if (region.getType() == DOMRegionContext.XML_DOCTYPE_DECLARATION \|\| region.getType() == DOMRegionContext.XML_DECLARATION_OPEN)
	result = IHTMLPartitions.HTML_DECLARATION;
	else if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE && isScriptAttributeValue(region, offset))
	result = IHTMLPartitions.SCRIPT_EVENTHANDLER;
	else if (isStyleAttributeValue(region, offset))
	result = ICSSPartitions.STYLE;
	else
	result = super.getPartitionType(region, offset);
	return result;
	}

	public String getPartitionTypeBetween(IStructuredDocumentRegion previousNode, IStructuredDocumentRegion nextNode) {

	ITextRegion previousStartTagNameRegion = null;
	ITextRegion nextEndTagNameRegion = null;

	ITextRegion[] regions = previousNode.getRegions().toArray();
	for (int i = 0; i < regions.length; i++) {
	if(regions[i].getType() == DOMRegionContext.XML_TAG_NAME) {
	previousStartTagNameRegion = regions[i];
	break;
	}
	}
	regions = nextNode.getRegions().toArray();
	for (int i = 0; i < regions.length; i++) {
	if(regions[i].getType() == DOMRegionContext.XML_TAG_NAME) {
	nextEndTagNameRegion = regions[i];
	break;
	}
	}

	if(previousStartTagNameRegion == null \|\| nextEndTagNameRegion == null)
	return IHTMLPartitions.HTML_DEFAULT;

	String name1 = previousNode.getText(previousStartTagNameRegion);
	String name2 = nextNode.getText(nextEndTagNameRegion);
	if (name1.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT) && name2.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT))
	// return ST_SCRIPT;
	return getScriptingPartitionType(fStructuredDocument.getRegionAtCharacterOffset(previousNode.getStartOffset(previousStartTagNameRegion)));
	else if (name1.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE) && name2.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE))
	return ICSSPartitions.STYLE;
	return super.getPartitionTypeBetween(previousNode, nextNode);
	}


	protected String getPartitionType(ForeignRegion region, int offset) {
	String tagname = region.getSurroundingTag();
	String result = null;
	// tagname should not be null,
	// but see https://w3.opensource.ibm.com/bugzilla/show_bug.cgi?id=4911
	if (tagname == null) {
	result = getUnknown();
	}
	else if (tagname.equalsIgnoreCase(HTML40Namespace.ElementName.SCRIPT))
	result = IHTMLPartitions.SCRIPT;
	else if (tagname.equalsIgnoreCase(HTML40Namespace.ElementName.STYLE) \|\| isStyleAttributeValue(region,offset))
	result = ICSSPartitions.STYLE;
	else if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE && isScriptAttributeValue(region, offset))
	result = IHTMLPartitions.SCRIPT_EVENTHANDLER;
	else
	result = super.getPartitionType(region, offset);

	return result;
	}

	public String getDefaultPartitionType() {
	return IHTMLPartitions.HTML_DEFAULT;
	}

	public IDocumentPartitioner newInstance() {
	return new StructuredTextPartitionerForHTML();
	}

	/**
	* @return
	*/
	public static String[] getConfiguredContentTypes() {
	return configuredContentTypes;
	}

	private boolean isScriptAttributeValue(ITextRegion region, int offset) {
	if (region.getType() != DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE)
	return false;

	return isAttributeNameForValueInArray(EVENT_ATTRIBUTE_NAMES, region, offset);
	}

	/**
	* @param region {@link ITextRegion} containing <code>offset</code>
	* @param offset offset in the given <code>region</code> to check if it is in
	* the attribute value region of a style attribute
	* @return <code>true</code> if the given offset in the given region is
	* in the value region of a style attribute, <code>false</code> otherwise
	*/
	private boolean isStyleAttributeValue(ITextRegion region, int offset) {
	boolean isStyleAttributeValue = false;
	if (region.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) {
	isStyleAttributeValue = isAttributeNameForValueInArray(STYLE_ATTRIBUTE_NAMES, region, offset);
	}

	return isStyleAttributeValue;
	}

	/**
	* <p>determines if the attribute name associated with the given attribute region
	* is in the given array of attribute names</p>
	*
	* @param attributeNames determine if the attribute name associated with the given offset
	* is in this array of attribute names
	* @param attrValueRegion {@link ITextRegion} of the attribute region containing the given offset
	* @param offset offset in an attribute region to determine if it is in the list of given attribute names
	* @return <code>true</code> if the attribute name associated with the given offset is in the given
	* list of attribute names, <code>false</code> otherwise
	*/
	private boolean isAttributeNameForValueInArray(String[] attributeNames, ITextRegion attrValueRegion, int offset) {
	IStructuredDocumentRegion node = fStructuredDocument.getRegionAtCharacterOffset(offset);
	ITextRegionList regionList = node.getRegions();
	int currentIndex = regionList.indexOf(attrValueRegion);

	/*
	* 4 is the minimum index allowing for the tag's open, name, attribute
	* name and equals character to appear first
	*/
	if (currentIndex < 4)
	return false;
	ITextRegion tagAttrNameRegion = regionList.get(currentIndex - 2);

	boolean foundAttributeName = false;
	if (fStructuredDocument instanceof IRegionComparible) {
	int start = node.getStartOffset(tagAttrNameRegion);
	for (int i = 0; !foundAttributeName && i < attributeNames.length; i++) {
	foundAttributeName = ((IRegionComparible) fStructuredDocument).regionMatchesIgnoreCase(start, tagAttrNameRegion.getTextLength(), attributeNames[i]);
	}
	}
	else {
	String tagAttrName = node.getText(tagAttrNameRegion);
	foundAttributeName = StringUtils.contains(attributeNames, tagAttrName, false);
	}
	return foundAttributeName;
	}

	/* (non-Javadoc)
	* @see org.eclipse.wst.sse.core.internal.text.rules.StructuredTextPartitioner#getParserSpecificPreviousRegion(org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion)
	*/
	protected IStructuredDocumentRegion getParserSpecificPreviousRegion(IStructuredDocumentRegion currentRegion) {
	if (currentRegion == null)
	return null;
	do {
	currentRegion = currentRegion.getPrevious();
	} while (currentRegion != null && currentRegion.getType().equals(DOMRegionContext.BLOCK_TEXT));

	return currentRegion;
	}
	}