bundles/org.eclipse.jst.jsp.ui/src/org/eclipse/jst/jsp/ui/internal/contentassist/JSPTaglibDirectiveContentAssistProcessor.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2007 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.jst.jsp.ui.internal.contentassist;

 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jst.jsp.core.internal.provisional.JSP11Namespace;
 import org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupport;
 import org.eclipse.jst.jsp.core.taglib.IJarRecord;
 import org.eclipse.jst.jsp.core.taglib.ITLDRecord;
 import org.eclipse.jst.jsp.core.taglib.ITagDirRecord;
 import org.eclipse.jst.jsp.core.taglib.ITaglibDescriptor;
 import org.eclipse.jst.jsp.core.taglib.ITaglibRecord;
 import org.eclipse.jst.jsp.core.taglib.IURLRecord;
 import org.eclipse.jst.jsp.core.taglib.TaglibIndex;
 import org.eclipse.jst.jsp.ui.internal.JSPUIPlugin;
 import org.eclipse.jst.jsp.ui.internal.Logger;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.wst.common.uriresolver.internal.util.URIHelper;
 import org.eclipse.wst.html.core.internal.contentmodel.JSP20Namespace;
 import org.eclipse.wst.sse.core.StructuredModelManager;
 import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionContainer;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
 import org.eclipse.wst.sse.core.utils.StringUtils;
 import org.eclipse.wst.sse.ui.internal.contentassist.CustomCompletionProposal;
 import org.eclipse.wst.sse.ui.internal.contentassist.IRelevanceConstants;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
 import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
 import org.eclipse.wst.xml.ui.internal.contentassist.ContentAssistRequest;
 import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImageHelper;
 import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImages;
 import org.w3c.dom.Node;

 /**
  * @plannedfor 1.0
  */
 public class JSPTaglibDirectiveContentAssistProcessor extends JSPDummyContentAssistProcessor {

 	public JSPTaglibDirectiveContentAssistProcessor() {
 		super();
 	}

 	String getSmallImageURL(ITaglibRecord taglibRecord) {
 		String url = null;
 		switch (taglibRecord.getRecordType()) {
 			case (ITaglibRecord.TLD) : {
 				ITLDRecord record = (ITLDRecord) taglibRecord;
 				IResource file = ResourcesPlugin.getWorkspace().getRoot().getFile(record.getPath());
 				if (file.getLocation() != null && record.getDescriptor().getSmallIcon().length() > 0) {
 					url = "platform:/resource/" + FacetModuleCoreSupport.resolve(file.getFullPath(), record.getDescriptor().getSmallIcon()); //$NON-NLS-1$
 				}
 			}
 				break;
 			case (ITaglibRecord.JAR) : {
 				IJarRecord record = (IJarRecord) taglibRecord;
 				if (record.getDescriptor().getSmallIcon().length() > 0) {
 					// url = "file:" +
 					// URIHelper.normalize(record.getDescriptor().getSmallIcon(),
 					// record.getLocation().toString(), "/"); //$NON-NLS-1$
 				}
 			}
 				break;
 			case (ITaglibRecord.TAGDIR) : {
 			}
 				break;
 			case (ITaglibRecord.URL) : {
 				IURLRecord record = (IURLRecord) taglibRecord;
 				if (record.getDescriptor().getSmallIcon().length() > 0) {
 					url = URIHelper.normalize(record.getDescriptor().getSmallIcon(), record.getURL().toString(), "/"); //$NON-NLS-1$
 				}
 			}
 				break;
 		}
 		return url;
 	}


 	protected void addAttributeValueProposals(ContentAssistRequest contentAssistRequest) {
 		IPath basePath = getBasePath(contentAssistRequest);
 		if (basePath == null)
 			return;

 		IDOMNode node = (IDOMNode) contentAssistRequest.getNode();

 		// Find the attribute name for which this position should have a value
 		IStructuredDocumentRegion open = node.getFirstStructuredDocumentRegion();
 		ITextRegionList openRegions = open.getRegions();
 		int i = openRegions.indexOf(contentAssistRequest.getRegion());
 		if (i < 0)
 			return;
 		ITextRegion nameRegion = null;
 		while (i >= 0) {
 			nameRegion = openRegions.get(i--);
 			if (nameRegion.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME)
 				break;
 		}

 		String attributeName = null;
 		if (nameRegion != null)
 			attributeName = open.getText(nameRegion);

 		String currentValue = null;
 		if (contentAssistRequest.getRegion().getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE)
 			currentValue = contentAssistRequest.getText();
 		else
 			currentValue = ""; //$NON-NLS-1$
 		String matchString = null;
 		// fixups
 		int start = contentAssistRequest.getReplacementBeginPosition();
 		int length = contentAssistRequest.getReplacementLength();
 		if (currentValue.length() > StringUtils.strip(currentValue).length() && (currentValue.startsWith("\"") || currentValue.startsWith("'")) //$NON-NLS-1$ //$NON-NLS-2$
 					&& contentAssistRequest.getMatchString().length() > 0) {
 			matchString = currentValue.substring(1, contentAssistRequest.getMatchString().length());
 		}
 		else
 			matchString = currentValue.substring(0, contentAssistRequest.getMatchString().length());
 		boolean existingComplicatedValue = contentAssistRequest.getRegion() != null && contentAssistRequest.getRegion() instanceof ITextRegionContainer;
 		if (existingComplicatedValue) {
 			contentAssistRequest.getProposals().clear();
 			contentAssistRequest.getMacros().clear();
 		}
 		else {
 			String lowerCaseMatch = matchString.toLowerCase(Locale.US);
 			if (attributeName.equals(JSP11Namespace.ATTR_NAME_URI)) {
 				ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
 				/*
 				 * a simple enough way to remove duplicates (resolution at
 				 * runtime would be nondeterministic anyway)
 				 */
 				Map uriToRecords = new HashMap();
 				for (int taglibRecordNumber = 0; taglibRecordNumber < availableTaglibRecords.length; taglibRecordNumber++) {
 					ITaglibRecord taglibRecord = availableTaglibRecords[taglibRecordNumber];
 					ITaglibDescriptor descriptor = taglibRecord.getDescriptor();
 					String uri = null;
 					switch (taglibRecord.getRecordType()) {
 						case ITaglibRecord.URL :
 							uri = descriptor.getURI();
 							uriToRecords.put(uri, taglibRecord);
 							break;
 						case ITaglibRecord.JAR : {
 							IPath location = ((IJarRecord) taglibRecord).getLocation();
 							IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocation(location);
 							IPath localContextRoot = FacetModuleCoreSupport.computeWebContentRootPath(basePath);
 							for (int fileNumber = 0; localContextRoot != null && fileNumber < files.length; fileNumber++) {
 								if (localContextRoot.isPrefixOf(files[fileNumber].getFullPath())) {
 									uri = IPath.SEPARATOR + files[fileNumber].getFullPath().removeFirstSegments(localContextRoot.segmentCount()).toString();
 									uriToRecords.put(uri, taglibRecord);
 								}
 								else {
 									uri = FacetModuleCoreSupport.getRuntimePath(files[fileNumber].getFullPath()).toString();
 									uriToRecords.put(uri, taglibRecord);
 								}
 							}
 							break;
 						}
 						case ITaglibRecord.TLD : {
 							IPath path = ((ITLDRecord) taglibRecord).getPath();
 							IPath localContextRoot = FacetModuleCoreSupport.computeWebContentRootPath(basePath);
 							if (localContextRoot.isPrefixOf(path)) {
 								uri = IPath.SEPARATOR + path.removeFirstSegments(localContextRoot.segmentCount()).toString();
 								uriToRecords.put(uri, taglibRecord);
 							}
 							else {
 								uri = FacetModuleCoreSupport.getRuntimePath(path).toString();
 								uriToRecords.put(uri, taglibRecord);
 							}
 							break;
 						}
 					}
 				}
 				/*
 				 * use the records and their descriptors to construct
 				 * proposals
 				 */
 				Object[] uris = uriToRecords.keySet().toArray();
 				for (int uriNumber = 0; uriNumber < uris.length; uriNumber++) {
 					String uri = uris[uriNumber].toString();
 					ITaglibRecord taglibRecord = (ITaglibRecord) uriToRecords.get(uri);
 					ITaglibDescriptor descriptor = (taglibRecord).getDescriptor();
 					if (uri != null && uri.length() > 0 && (matchString.length() == 0 || uri.toLowerCase(Locale.US).startsWith(lowerCaseMatch))) {
 						String url = getSmallImageURL(taglibRecord);
 						ImageDescriptor imageDescriptor = JSPUIPlugin.getInstance().getImageRegistry().getDescriptor(url);
 						if (imageDescriptor == null && url != null) {
 							URL imageURL;
 							try {
 								imageURL = new URL(url);
 								imageDescriptor = ImageDescriptor.createFromURL(imageURL);
 								JSPUIPlugin.getInstance().getImageRegistry().put(url, imageDescriptor);
 							}
 							catch (MalformedURLException e) {
 								Logger.logException(e);
 							}
 						}
 						String additionalInfo = descriptor.getDisplayName() + "<br/>" + descriptor.getDescription() + "<br/>" + descriptor.getTlibVersion();
 						Image image = null;
 						try {
 							image = JSPUIPlugin.getInstance().getImageRegistry().get(url);
 						}
 						catch (Exception e) {
 							Logger.logException(e);
 						}
 						if (image == null) {
 							image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
 						}
 						CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + uri + "\"", start, length, uri.length() + 2, image, uri, null, additionalInfo, IRelevanceConstants.R_NONE);
 						contentAssistRequest.addProposal(proposal);
 					}
 				}
 			}
 			else if (attributeName.equals(JSP20Namespace.ATTR_NAME_TAGDIR)) {
 				ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
 				/*
 				 * a simple enough way to remove duplicates (resolution at
 				 * runtime would be nondeterministic anyway)
 				 */
 				Map uriToRecords = new HashMap();
 				for (int taglibRecordNumber = 0; taglibRecordNumber < availableTaglibRecords.length; taglibRecordNumber++) {
 					ITaglibRecord taglibRecord = availableTaglibRecords[taglibRecordNumber];
 					String uri = null;
 					if (taglibRecord.getRecordType() == ITaglibRecord.TAGDIR) {
 						IPath path = ((ITagDirRecord) taglibRecord).getPath();
 						IPath localContextRoot = TaglibIndex.getContextRoot(basePath);
 						if (localContextRoot.isPrefixOf(path)) {
 							uri = IPath.SEPARATOR + path.removeFirstSegments(localContextRoot.segmentCount()).toString();
 							uriToRecords.put(uri, taglibRecord);
 						}
 					}
 				}
 				/*
 				 * use the records and their descriptors to construct
 				 * proposals
 				 */
 				Object[] uris = uriToRecords.keySet().toArray();
 				for (int uriNumber = 0; uriNumber < uris.length; uriNumber++) {
 					String uri = uris[uriNumber].toString();
 					ITaglibRecord taglibRecord = (ITaglibRecord) uriToRecords.get(uri);
 					ITaglibDescriptor descriptor = (taglibRecord).getDescriptor();
 					if (uri != null && uri.length() > 0 && (matchString.length() == 0 || uri.toLowerCase(Locale.US).startsWith(lowerCaseMatch))) {
 						String url = getSmallImageURL(taglibRecord);
 						ImageDescriptor imageDescriptor = null;
 						if (url != null) {
 							imageDescriptor = JSPUIPlugin.getInstance().getImageRegistry().getDescriptor(url);
 						}
 						if (imageDescriptor == null && url != null) {
 							URL imageURL;
 							try {
 								imageURL = new URL(url);
 								imageDescriptor = ImageDescriptor.createFromURL(imageURL);
 								JSPUIPlugin.getInstance().getImageRegistry().put(url, imageDescriptor);
 							}
 							catch (MalformedURLException e) {
 								Logger.logException(e);
 							}
 						}
 						String additionalInfo = descriptor.getDescription() + "<br/>" + descriptor.getTlibVersion();
 						Image image = null;
 						try {
 							image = JSPUIPlugin.getInstance().getImageRegistry().get(url);
 						}
 						catch (Exception e) {
 							Logger.logException(e);
 						}
 						if (image == null) {
 							image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
 						}
 						CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + uri + "\"", start, length, uri.length() + 2, image, uri, null, additionalInfo, IRelevanceConstants.R_NONE);
 						contentAssistRequest.addProposal(proposal);
 					}
 				}
 			}
 			else if (attributeName.equals(JSP11Namespace.ATTR_NAME_PREFIX)) {
 				Node uriAttr = node.getAttributes().getNamedItem(JSP11Namespace.ATTR_NAME_URI);
 				String uri = null;
 				if (uriAttr != null) {
 					uri = uriAttr.getNodeValue();
 					ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
 					Map prefixMap = new HashMap();
 					for (int taglibrecordNumber = 0; taglibrecordNumber < availableTaglibRecords.length; taglibrecordNumber++) {
 						ITaglibDescriptor descriptor = availableTaglibRecords[taglibrecordNumber].getDescriptor();
 						if (descriptor != null && descriptor.getURI() != null && descriptor.getURI().toLowerCase(Locale.US).equals(uri.toLowerCase(Locale.US))) {
 							String shortName = descriptor.getShortName().trim();
 							if (shortName.length() > 0) {
 								boolean valid = true;
 								for (int character = 0; character < shortName.length(); character++) {
 									valid = valid && !Character.isWhitespace(shortName.charAt(character));
 								}
 								if (valid) {
 									prefixMap.put(shortName, descriptor);
 								}
 							}
 						}
 					}
 					Object prefixes[] = prefixMap.keySet().toArray();
 					for (int j = 0; j < prefixes.length; j++) {
 						String prefix = (String) prefixes[j];
 						ITaglibDescriptor descriptor = (ITaglibDescriptor) prefixMap.get(prefix);
 						Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
 						CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + prefix + "\"", start, length, prefix.length() + 2, image, prefix, null, descriptor.getDescription(), IRelevanceConstants.R_NONE);
 						contentAssistRequest.addProposal(proposal);
 					}
 				}
 				else {
 					Node dirAttr = node.getAttributes().getNamedItem(JSP20Namespace.ATTR_NAME_TAGDIR);
 					if (dirAttr != null) {
 						String dir = dirAttr.getNodeValue();
 						if (dir != null) {
 							ITaglibRecord record = TaglibIndex.resolve(basePath.toString(), dir, false);
 							if (record != null) {
 								ITaglibDescriptor descriptor = record.getDescriptor();
 								if (descriptor != null) {
 									String shortName = descriptor.getShortName();

 									Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
 									CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + shortName + "\"", start, length, shortName.length() + 2, image, shortName, null, descriptor.getDescription(), IRelevanceConstants.R_NONE);
 									contentAssistRequest.addProposal(proposal);
 								}
 								else {
 									if (dir.startsWith("/WEB-INF/")) {
 										dir = dir.substring(9);
 									}
 									String prefix = StringUtils.replace(dir, "/", "-");

 									Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
 									CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + prefix + "\"", start, length, prefix.length() + 2, image, prefix, null, null, IRelevanceConstants.R_NONE);
 									contentAssistRequest.addProposal(proposal);
 								}
 							}
 						}
 					}
 				}
 			}
 		}
 	}

 	/**
 	 * Returns project request is in
 	 *
 	 * @param request
 	 * @return
 	 */
 	private IPath getBasePath(ContentAssistRequest request) {
 		IPath baselocation = null;

 		if (request != null) {
 			IStructuredDocumentRegion region = request.getDocumentRegion();
 			if (region != null) {
 				IDocument document = region.getParentDocument();
 				IStructuredModel model = null;
 				try {
 					model = StructuredModelManager.getModelManager().getExistingModelForRead(document);
 					if (model != null) {
 						String location = model.getBaseLocation();
 						if (location != null) {
 							baselocation = new Path(location);
 						}
 					}
 				}
 				finally {
 					if (model != null)
 						model.releaseFromRead();
 				}
 			}
 		}
 		return baselocation;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2006, 2007 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.jst.jsp.ui.internal.contentassist;

	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.HashMap;
	import java.util.Locale;
	import java.util.Map;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jst.jsp.core.internal.provisional.JSP11Namespace;
	import org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupport;
	import org.eclipse.jst.jsp.core.taglib.IJarRecord;
	import org.eclipse.jst.jsp.core.taglib.ITLDRecord;
	import org.eclipse.jst.jsp.core.taglib.ITagDirRecord;
	import org.eclipse.jst.jsp.core.taglib.ITaglibDescriptor;
	import org.eclipse.jst.jsp.core.taglib.ITaglibRecord;
	import org.eclipse.jst.jsp.core.taglib.IURLRecord;
	import org.eclipse.jst.jsp.core.taglib.TaglibIndex;
	import org.eclipse.jst.jsp.ui.internal.JSPUIPlugin;
	import org.eclipse.jst.jsp.ui.internal.Logger;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.wst.common.uriresolver.internal.util.URIHelper;
	import org.eclipse.wst.html.core.internal.contentmodel.JSP20Namespace;
	import org.eclipse.wst.sse.core.StructuredModelManager;
	import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionContainer;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
	import org.eclipse.wst.sse.core.utils.StringUtils;
	import org.eclipse.wst.sse.ui.internal.contentassist.CustomCompletionProposal;
	import org.eclipse.wst.sse.ui.internal.contentassist.IRelevanceConstants;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
	import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
	import org.eclipse.wst.xml.ui.internal.contentassist.ContentAssistRequest;
	import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImageHelper;
	import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImages;
	import org.w3c.dom.Node;

	/**
	* @plannedfor 1.0
	*/
	public class JSPTaglibDirectiveContentAssistProcessor extends JSPDummyContentAssistProcessor {

	public JSPTaglibDirectiveContentAssistProcessor() {
	super();
	}

	String getSmallImageURL(ITaglibRecord taglibRecord) {
	String url = null;
	switch (taglibRecord.getRecordType()) {
	case (ITaglibRecord.TLD) : {
	ITLDRecord record = (ITLDRecord) taglibRecord;
	IResource file = ResourcesPlugin.getWorkspace().getRoot().getFile(record.getPath());
	if (file.getLocation() != null && record.getDescriptor().getSmallIcon().length() > 0) {
	url = "platform:/resource/" + FacetModuleCoreSupport.resolve(file.getFullPath(), record.getDescriptor().getSmallIcon()); //$NON-NLS-1$
	}
	}
	break;
	case (ITaglibRecord.JAR) : {
	IJarRecord record = (IJarRecord) taglibRecord;
	if (record.getDescriptor().getSmallIcon().length() > 0) {
	// url = "file:" +
	// URIHelper.normalize(record.getDescriptor().getSmallIcon(),
	// record.getLocation().toString(), "/"); //$NON-NLS-1$
	}
	}
	break;
	case (ITaglibRecord.TAGDIR) : {
	}
	break;
	case (ITaglibRecord.URL) : {
	IURLRecord record = (IURLRecord) taglibRecord;
	if (record.getDescriptor().getSmallIcon().length() > 0) {
	url = URIHelper.normalize(record.getDescriptor().getSmallIcon(), record.getURL().toString(), "/"); //$NON-NLS-1$
	}
	}
	break;
	}
	return url;
	}


	protected void addAttributeValueProposals(ContentAssistRequest contentAssistRequest) {
	IPath basePath = getBasePath(contentAssistRequest);
	if (basePath == null)
	return;

	IDOMNode node = (IDOMNode) contentAssistRequest.getNode();

	// Find the attribute name for which this position should have a value
	IStructuredDocumentRegion open = node.getFirstStructuredDocumentRegion();
	ITextRegionList openRegions = open.getRegions();
	int i = openRegions.indexOf(contentAssistRequest.getRegion());
	if (i < 0)
	return;
	ITextRegion nameRegion = null;
	while (i >= 0) {
	nameRegion = openRegions.get(i--);
	if (nameRegion.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME)
	break;
	}

	String attributeName = null;
	if (nameRegion != null)
	attributeName = open.getText(nameRegion);

	String currentValue = null;
	if (contentAssistRequest.getRegion().getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE)
	currentValue = contentAssistRequest.getText();
	else
	currentValue = ""; //$NON-NLS-1$
	String matchString = null;
	// fixups
	int start = contentAssistRequest.getReplacementBeginPosition();
	int length = contentAssistRequest.getReplacementLength();
	if (currentValue.length() > StringUtils.strip(currentValue).length() && (currentValue.startsWith("\"") \|\| currentValue.startsWith("'")) //$NON-NLS-1$ //$NON-NLS-2$
	&& contentAssistRequest.getMatchString().length() > 0) {
	matchString = currentValue.substring(1, contentAssistRequest.getMatchString().length());
	}
	else
	matchString = currentValue.substring(0, contentAssistRequest.getMatchString().length());
	boolean existingComplicatedValue = contentAssistRequest.getRegion() != null && contentAssistRequest.getRegion() instanceof ITextRegionContainer;
	if (existingComplicatedValue) {
	contentAssistRequest.getProposals().clear();
	contentAssistRequest.getMacros().clear();
	}
	else {
	String lowerCaseMatch = matchString.toLowerCase(Locale.US);
	if (attributeName.equals(JSP11Namespace.ATTR_NAME_URI)) {
	ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
	/*
	* a simple enough way to remove duplicates (resolution at
	* runtime would be nondeterministic anyway)
	*/
	Map uriToRecords = new HashMap();
	for (int taglibRecordNumber = 0; taglibRecordNumber < availableTaglibRecords.length; taglibRecordNumber++) {
	ITaglibRecord taglibRecord = availableTaglibRecords[taglibRecordNumber];
	ITaglibDescriptor descriptor = taglibRecord.getDescriptor();
	String uri = null;
	switch (taglibRecord.getRecordType()) {
	case ITaglibRecord.URL :
	uri = descriptor.getURI();
	uriToRecords.put(uri, taglibRecord);
	break;
	case ITaglibRecord.JAR : {
	IPath location = ((IJarRecord) taglibRecord).getLocation();
	IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocation(location);
	IPath localContextRoot = FacetModuleCoreSupport.computeWebContentRootPath(basePath);
	for (int fileNumber = 0; localContextRoot != null && fileNumber < files.length; fileNumber++) {
	if (localContextRoot.isPrefixOf(files[fileNumber].getFullPath())) {
	uri = IPath.SEPARATOR + files[fileNumber].getFullPath().removeFirstSegments(localContextRoot.segmentCount()).toString();
	uriToRecords.put(uri, taglibRecord);
	}
	else {
	uri = FacetModuleCoreSupport.getRuntimePath(files[fileNumber].getFullPath()).toString();
	uriToRecords.put(uri, taglibRecord);
	}
	}
	break;
	}
	case ITaglibRecord.TLD : {
	IPath path = ((ITLDRecord) taglibRecord).getPath();
	IPath localContextRoot = FacetModuleCoreSupport.computeWebContentRootPath(basePath);
	if (localContextRoot.isPrefixOf(path)) {
	uri = IPath.SEPARATOR + path.removeFirstSegments(localContextRoot.segmentCount()).toString();
	uriToRecords.put(uri, taglibRecord);
	}
	else {
	uri = FacetModuleCoreSupport.getRuntimePath(path).toString();
	uriToRecords.put(uri, taglibRecord);
	}
	break;
	}
	}
	}
	/*
	* use the records and their descriptors to construct
	* proposals
	*/
	Object[] uris = uriToRecords.keySet().toArray();
	for (int uriNumber = 0; uriNumber < uris.length; uriNumber++) {
	String uri = uris[uriNumber].toString();
	ITaglibRecord taglibRecord = (ITaglibRecord) uriToRecords.get(uri);
	ITaglibDescriptor descriptor = (taglibRecord).getDescriptor();
	if (uri != null && uri.length() > 0 && (matchString.length() == 0 \|\| uri.toLowerCase(Locale.US).startsWith(lowerCaseMatch))) {
	String url = getSmallImageURL(taglibRecord);
	ImageDescriptor imageDescriptor = JSPUIPlugin.getInstance().getImageRegistry().getDescriptor(url);
	if (imageDescriptor == null && url != null) {
	URL imageURL;
	try {
	imageURL = new URL(url);
	imageDescriptor = ImageDescriptor.createFromURL(imageURL);
	JSPUIPlugin.getInstance().getImageRegistry().put(url, imageDescriptor);
	}
	catch (MalformedURLException e) {
	Logger.logException(e);
	}
	}
	String additionalInfo = descriptor.getDisplayName() + "<br/>" + descriptor.getDescription() + "<br/>" + descriptor.getTlibVersion();
	Image image = null;
	try {
	image = JSPUIPlugin.getInstance().getImageRegistry().get(url);
	}
	catch (Exception e) {
	Logger.logException(e);
	}
	if (image == null) {
	image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
	}
	CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + uri + "\"", start, length, uri.length() + 2, image, uri, null, additionalInfo, IRelevanceConstants.R_NONE);
	contentAssistRequest.addProposal(proposal);
	}
	}
	}
	else if (attributeName.equals(JSP20Namespace.ATTR_NAME_TAGDIR)) {
	ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
	/*
	* a simple enough way to remove duplicates (resolution at
	* runtime would be nondeterministic anyway)
	*/
	Map uriToRecords = new HashMap();
	for (int taglibRecordNumber = 0; taglibRecordNumber < availableTaglibRecords.length; taglibRecordNumber++) {
	ITaglibRecord taglibRecord = availableTaglibRecords[taglibRecordNumber];
	String uri = null;
	if (taglibRecord.getRecordType() == ITaglibRecord.TAGDIR) {
	IPath path = ((ITagDirRecord) taglibRecord).getPath();
	IPath localContextRoot = TaglibIndex.getContextRoot(basePath);
	if (localContextRoot.isPrefixOf(path)) {
	uri = IPath.SEPARATOR + path.removeFirstSegments(localContextRoot.segmentCount()).toString();
	uriToRecords.put(uri, taglibRecord);
	}
	}
	}
	/*
	* use the records and their descriptors to construct
	* proposals
	*/
	Object[] uris = uriToRecords.keySet().toArray();
	for (int uriNumber = 0; uriNumber < uris.length; uriNumber++) {
	String uri = uris[uriNumber].toString();
	ITaglibRecord taglibRecord = (ITaglibRecord) uriToRecords.get(uri);
	ITaglibDescriptor descriptor = (taglibRecord).getDescriptor();
	if (uri != null && uri.length() > 0 && (matchString.length() == 0 \|\| uri.toLowerCase(Locale.US).startsWith(lowerCaseMatch))) {
	String url = getSmallImageURL(taglibRecord);
	ImageDescriptor imageDescriptor = null;
	if (url != null) {
	imageDescriptor = JSPUIPlugin.getInstance().getImageRegistry().getDescriptor(url);
	}
	if (imageDescriptor == null && url != null) {
	URL imageURL;
	try {
	imageURL = new URL(url);
	imageDescriptor = ImageDescriptor.createFromURL(imageURL);
	JSPUIPlugin.getInstance().getImageRegistry().put(url, imageDescriptor);
	}
	catch (MalformedURLException e) {
	Logger.logException(e);
	}
	}
	String additionalInfo = descriptor.getDescription() + "<br/>" + descriptor.getTlibVersion();
	Image image = null;
	try {
	image = JSPUIPlugin.getInstance().getImageRegistry().get(url);
	}
	catch (Exception e) {
	Logger.logException(e);
	}
	if (image == null) {
	image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
	}
	CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + uri + "\"", start, length, uri.length() + 2, image, uri, null, additionalInfo, IRelevanceConstants.R_NONE);
	contentAssistRequest.addProposal(proposal);
	}
	}
	}
	else if (attributeName.equals(JSP11Namespace.ATTR_NAME_PREFIX)) {
	Node uriAttr = node.getAttributes().getNamedItem(JSP11Namespace.ATTR_NAME_URI);
	String uri = null;
	if (uriAttr != null) {
	uri = uriAttr.getNodeValue();
	ITaglibRecord[] availableTaglibRecords = TaglibIndex.getAvailableTaglibRecords(basePath);
	Map prefixMap = new HashMap();
	for (int taglibrecordNumber = 0; taglibrecordNumber < availableTaglibRecords.length; taglibrecordNumber++) {
	ITaglibDescriptor descriptor = availableTaglibRecords[taglibrecordNumber].getDescriptor();
	if (descriptor != null && descriptor.getURI() != null && descriptor.getURI().toLowerCase(Locale.US).equals(uri.toLowerCase(Locale.US))) {
	String shortName = descriptor.getShortName().trim();
	if (shortName.length() > 0) {
	boolean valid = true;
	for (int character = 0; character < shortName.length(); character++) {
	valid = valid && !Character.isWhitespace(shortName.charAt(character));
	}
	if (valid) {
	prefixMap.put(shortName, descriptor);
	}
	}
	}
	}
	Object prefixes[] = prefixMap.keySet().toArray();
	for (int j = 0; j < prefixes.length; j++) {
	String prefix = (String) prefixes[j];
	ITaglibDescriptor descriptor = (ITaglibDescriptor) prefixMap.get(prefix);
	Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
	CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + prefix + "\"", start, length, prefix.length() + 2, image, prefix, null, descriptor.getDescription(), IRelevanceConstants.R_NONE);
	contentAssistRequest.addProposal(proposal);
	}
	}
	else {
	Node dirAttr = node.getAttributes().getNamedItem(JSP20Namespace.ATTR_NAME_TAGDIR);
	if (dirAttr != null) {
	String dir = dirAttr.getNodeValue();
	if (dir != null) {
	ITaglibRecord record = TaglibIndex.resolve(basePath.toString(), dir, false);
	if (record != null) {
	ITaglibDescriptor descriptor = record.getDescriptor();
	if (descriptor != null) {
	String shortName = descriptor.getShortName();

	Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
	CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + shortName + "\"", start, length, shortName.length() + 2, image, shortName, null, descriptor.getDescription(), IRelevanceConstants.R_NONE);
	contentAssistRequest.addProposal(proposal);
	}
	else {
	if (dir.startsWith("/WEB-INF/")) {
	dir = dir.substring(9);
	}
	String prefix = StringUtils.replace(dir, "/", "-");

	Image image = XMLEditorPluginImageHelper.getInstance().getImage(XMLEditorPluginImages.IMG_OBJ_ATTRIBUTE);
	CustomCompletionProposal proposal = new CustomCompletionProposal("\"" + prefix + "\"", start, length, prefix.length() + 2, image, prefix, null, null, IRelevanceConstants.R_NONE);
	contentAssistRequest.addProposal(proposal);
	}
	}
	}
	}
	}
	}
	}
	}

	/**
	* Returns project request is in
	*
	* @param request
	* @return
	*/
	private IPath getBasePath(ContentAssistRequest request) {
	IPath baselocation = null;

	if (request != null) {
	IStructuredDocumentRegion region = request.getDocumentRegion();
	if (region != null) {
	IDocument document = region.getParentDocument();
	IStructuredModel model = null;
	try {
	model = StructuredModelManager.getModelManager().getExistingModelForRead(document);
	if (model != null) {
	String location = model.getBaseLocation();
	if (location != null) {
	baselocation = new Path(location);
	}
	}
	}
	finally {
	if (model != null)
	model.releaseFromRead();
	}
	}
	}
	return baselocation;
	}

	}