bundles/org.eclipse.wst.jsdt.web.core/src/org/eclipse/wst/jsdt/web/core/internal/java/JsTranslation.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * 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.jsdt.web.core.internal.java;

 import java.util.ArrayList;
 import java.util.List;
 import java.util.Vector;

 import org.eclipse.core.filebuffers.FileBuffers;
 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.Position;
 import org.eclipse.wst.jsdt.core.IBuffer;
 import org.eclipse.wst.jsdt.core.ICompilationUnit;
 import org.eclipse.wst.jsdt.core.IJavaElement;
 import org.eclipse.wst.jsdt.core.IJavaProject;
 import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
 import org.eclipse.wst.jsdt.core.ISourceRange;
 import org.eclipse.wst.jsdt.core.JavaModelException;
 import org.eclipse.wst.jsdt.core.LibrarySuperType;
 import org.eclipse.wst.jsdt.core.WorkingCopyOwner;
 import org.eclipse.wst.jsdt.internal.core.DocumentContextFragmentRoot;
 import org.eclipse.wst.jsdt.internal.core.SourceRefElement;
 import org.eclipse.wst.jsdt.web.core.internal.Logger;
 import org.eclipse.wst.jsdt.web.core.internal.project.JsWebNature;
 import org.eclipse.wst.sse.core.StructuredModelManager;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;

 /**
  * @author brad childs
  */
 public class JsTranslation implements IJsTranslation {

 	private static final boolean DEBUG;
 	static {
 		String value = Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jsptranslation"); //$NON-NLS-1$
 		DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$
 	}

 	private ICompilationUnit fCompilationUnit = null;
 	private DocumentContextFragmentRoot fDocumentScope;
 	private IJavaProject fJavaProject = null;
 	private byte[] fLock = null;
 	private IProgressMonitor fProgressMonitor = null;
 	private IStructuredDocument fHtmlDocument;
 	private String fModelBaseLocation;


 	private static final String SUPER_TYPE_NAME = "Window";
 	private static final String SUPER_TYPE_LIBRARY = "org.eclipse.wst.jsdt.launching.baseBrowserLibrary";

 	private JsTranslator translator;

 	private String mangledName;
 	private boolean listenForChanges;

 //	public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj) {
 //		fLock = new byte[0];
 //		fJavaProject = javaProj;
 //		fHtmlDocument = htmlDocument;
 //		setBaseLocation();
 //		translator = new JsTranslator(htmlDocument, fModelBaseLocation);
 //		mangledName = createMangledName();
 //		listenForChanges = true;
 //	}

 	public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj, boolean listenForChanges) {
 		fLock = new byte[0];
 		fJavaProject = javaProj;
 		fHtmlDocument = htmlDocument;
 		setBaseLocation();
 		translator = new JsTranslator(htmlDocument, fModelBaseLocation,listenForChanges);
 		mangledName = createMangledName();
 		this.listenForChanges=listenForChanges;
 	}

 	public IJavaProject getJavaProject() {
 		return fJavaProject;
 	}

 	private IPackageFragmentRoot getDocScope(boolean reset) {
 		if(fDocumentScope==null) {
 			IProject project = getJavaProject().getProject();
 			IResource absoluteRoot = ((IContainer)getJavaProject().getResource()).findMember( WebRootFinder.getWebContentFolder(fJavaProject.getProject()));
 			fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, getFile(), WebRootFinder.getWebContentFolder(fJavaProject.getProject()), WebRootFinder.getServerContextRoot(fJavaProject.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
 			fDocumentScope.setIncludedFiles(translator.getRawImports());
 			return fDocumentScope;
 		}

 		if(reset) fDocumentScope.setIncludedFiles(translator.getRawImports());
 		return fDocumentScope;
 	}

 	private void setBaseLocation() {
 		IDOMModel xmlModel=null;
 		try {
 			xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getExistingModelForRead(fHtmlDocument);
 			if(xmlModel==null) {
 				xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getModelForRead(fHtmlDocument);
 			}
 			fModelBaseLocation = xmlModel.getBaseLocation();
 		}finally {
 			if(xmlModel!=null) xmlModel.releaseFromRead();
 		}
 	//	return xmlModel;
 	}

 	public IFile getFile() {
 			return FileBuffers.getWorkspaceFileAtLocation(new Path(fModelBaseLocation));
 	}


 	public IDocument getHtmlDocument() {
 		return fHtmlDocument;
 	}

 	public int getMissingTagStart() {
 		return translator.getMissingEndTagRegionStart();
 	}

 	private String getWebRoot() {
 		return 	WebRootFinder.getWebContentFolder(fJavaProject.getProject()).toString();
 	}

 	public String getDirectoryUnderRoot() {
 		String webRoot = getWebRoot() ;
 		IPath projectWebRootPath = getJavaProject().getPath().append(webRoot);
 		IPath filePath = new Path(fModelBaseLocation).removeLastSegments(1);
 		return filePath.removeFirstSegments(projectWebRootPath.matchingFirstSegments(filePath)).toString();
 	}

 	/**
 	 * Originally from ReconcileStepForJava. Creates an ICompilationUnit from
 	 * the contents of the JSP document.
 	 *
 	 * @return an ICompilationUnit from the contents of the JSP document
 	 */
 	private ICompilationUnit createCompilationUnit() throws JavaModelException {
 		//System.out.println("------------------------- CREATING CU ----------------------------");
 		LibrarySuperType superType = new LibrarySuperType(SUPER_TYPE_LIBRARY, fJavaProject, SUPER_TYPE_NAME);

 		IPackageFragmentRoot root = getDocScope(true);
 		//String directoryUnderWebroot = getDirectoryUnderRoot();
 		ICompilationUnit cu = root.getPackageFragment("").getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
 		//ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION,SUPER_TYPE_NAME).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());

 		IBuffer buffer;
 		try {
 			buffer = cu.getBuffer();
 		} catch (JavaModelException e) {
 			e.printStackTrace();
 			buffer = null;
 		}
 		if (buffer != null) {
 			translator.setBuffer(buffer);
 		}
 		return cu;
 	}

 	public String fixupMangledName(String displayString) {
 		if (displayString == null) {
 			return null;
 		}
 		return displayString.replaceAll(getMangledName() + ".js", getHtmlPageName());
 	}

 	public IJavaElement[] getAllElementsInJsRange(int javaPositionStart, int javaPositionEnd) {
 		IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
 		IJavaElement[] result = EMTPY_RESULT_SET;
 		IJavaElement[] allChildren = null;
 		try {
 			allChildren = getCompilationUnit().getChildren();
 		} catch (JavaModelException e) {
 		}
 		Vector validChildren = new Vector();
 		for (int i = 0; i < allChildren.length; i++) {
 			if (allChildren[i] instanceof IJavaElement && allChildren[i].getElementType() != IJavaElement.PACKAGE_DECLARATION) {
 				ISourceRange range = getJSSourceRangeOf(allChildren[i]);
 				if (javaPositionStart <= range.getOffset() && range.getLength() + range.getOffset() <= (javaPositionEnd)) {
 					validChildren.add(allChildren[i]);
 				} else if (allChildren[i].getElementType() == IJavaElement.TYPE) {
 					validChildren.add(allChildren[i]);
 				}
 			}
 		}
 		if (validChildren.size() > 0) {
 			result = (IJavaElement[]) validChildren.toArray(new IJavaElement[] {});
 		}
 		if (result == null || result.length == 0) {
 			return EMTPY_RESULT_SET;
 		}
 		return result;
 	}

 	public ICompilationUnit getCompilationUnit() {
 		synchronized (fLock) {
 			try {
 				if (fCompilationUnit == null) {
 					fCompilationUnit = createCompilationUnit();
 					return fCompilationUnit;
 				}

 			} catch (JavaModelException jme) {
 				if (JsTranslation.DEBUG) {
 					Logger.logException("error creating JSP working copy... ", jme); //$NON-NLS-1$
 				}
 			}

 		}
 		getDocScope(true);
 		try {
 			fCompilationUnit = fCompilationUnit.getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
 			//fCompilationUnit.makeConsistent(getProgressMonitor());
 		} catch (JavaModelException ex) {
 			// TODO Auto-generated catch block
 			ex.printStackTrace();
 		}
 		return fCompilationUnit;
 	}

 	public IJavaElement[] getElementsFromJsRange(int javaPositionStart, int javaPositionEnd) {
 		IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
 		IJavaElement[] result = EMTPY_RESULT_SET;
 		try {
 			ICompilationUnit cu = getCompilationUnit();
 			if (cu != null) {
 				synchronized (fLock) {
 					int cuDocLength = cu.getBuffer().getLength();
 					int javaLength = javaPositionEnd - javaPositionStart;
 					if (cuDocLength > 0 && javaPositionStart >= 0 && javaLength >= 0 && javaPositionEnd <= cuDocLength) {
 						result = cu.codeSelect(javaPositionStart, javaLength, getWorkingCopyOwner());
 					}
 				}
 			}
 			if (result == null || result.length == 0) {
 				return EMTPY_RESULT_SET;
 			}
 		} catch (JavaModelException x) {
 			Logger.logException(x);
 		}
 		return result;
 	}

 	private String getHtmlPageName() {
 		IPath path = new Path(fModelBaseLocation);
 		return path.lastSegment();

 	}

 	public String getHtmlText() {
 		return fHtmlDocument.get();
 	}

 	public String getJavaPath() {
 		//String webRoot = getWebRoot() ;
 		//IPackageFragmentRoot root = getDocScope(false);
 		//String cuPath = root.getPath().append("/" + getMangledName() + JsDataTypes.BASE_FILE_EXTENSION ).toString();
 		//ICompilationUnit cu = getCompilationUnit();
 		//IPath realCuPath = cu.getPath();
 		IPath rootPath = new Path(fModelBaseLocation).removeLastSegments(1);
 		String cuPath = rootPath.append("/" + getMangledName() + JsDataTypes.BASE_FILE_EXTENSION ).toString();
 		return cuPath;
 	}

 	public IJavaElement getJsElementAtOffset(int jsOffset) {
 		IJavaElement elements = null;
 		try {
 			elements = getCompilationUnit().getElementAt(jsOffset);
 		} catch (JavaModelException e) {
 			// TODO Auto-generated catch block
 			if (JsTranslation.DEBUG) {
 				Logger.logException("error retrieving java elemtnt from compilation unit... ", e); //$NON-NLS-1$
 			}
 			// }
 		}
 		return elements;
 	}

 	private ISourceRange getJSSourceRangeOf(IJavaElement element) {
 		// returns the offset in html of given element
 		ISourceRange range = null;
 		if (element instanceof SourceRefElement) {
 			try {
 				range = ((SourceRefElement) element).getSourceRange();
 			} catch (JavaModelException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();
 			}
 		}
 		return range;
 	}

 	public String getJsText() {
 		return translator.getJsText();
 	}

 	public String getMangledName() {
 		return this.mangledName;
 	}

 	private String createMangledName() {
 		return JsNameManglerUtil.mangle(fModelBaseLocation);
 	}

 	/**
 	 *
 	 * @return the problem requestor for the CompilationUnit in this
 	 *         JSPTranslation
 	 */
 	private JsProblemRequestor getProblemRequestor() {
 		return CompilationUnitHelper.getInstance().getProblemRequestor();
 	}

 	public List getProblems() {
 		List problems = getProblemRequestor().getCollectedProblems();
 		getProblemRequestor().endReporting();
 		return problems != null ? problems : new ArrayList();
 	}

 	private IProgressMonitor getProgressMonitor() {
 		if (fProgressMonitor == null) {
 			fProgressMonitor = new NullProgressMonitor();
 		}
 		return fProgressMonitor;
 	}

 	public WorkingCopyOwner getWorkingCopyOwner() {
 		return CompilationUnitHelper.getInstance().getWorkingCopyOwner();
 	}

 	public boolean ifOffsetInImportNode(int offset) {
 		Position[] importRanges = translator.getImportHtmlRanges();
 		for (int i = 0; i < importRanges.length; i++) {
 			if (importRanges[i].includes(offset)) {
 				return true;
 			}
 		}
 		return false;
 	}

 	public void reconcileCompilationUnit() {
 		// if(true) return;
 		ICompilationUnit cu = getCompilationUnit();
 		if (fCompilationUnit == null) {
 			return;
 		}
 		if (cu != null) {
 			try {
 				synchronized (fLock) {
 					// if(false)
 					//cu.makeConsistent(getProgressMonitor());
 					cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(), getProgressMonitor());
 				}
 			} catch (JavaModelException e) {
 				Logger.logException(e);
 			}
 		}
 	}


 	public void release() {
 		if(translator!=null) translator.release();
 		synchronized (fLock) {
 			if (fCompilationUnit != null) {
 				try {
 					if (JsTranslation.DEBUG) {
 						System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
 						System.out.println("(-) JSPTranslation [" + this + "] discarding CompilationUnit: " + fCompilationUnit); //$NON-NLS-1$ //$NON-NLS-2$
 						System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
 					}
 					fCompilationUnit.discardWorkingCopy();
 				} catch (JavaModelException e) {
 					// we're done w/ it anyway
 				}
 			}
 		}
 	}

 	public void setProblemCollectingActive(boolean collect) {
 		ICompilationUnit cu = getCompilationUnit();
 		if (cu != null) {
 			getProblemRequestor().setIsActive(collect);
 		}
 	}

 	public void classpathChange() {

 		if(fDocumentScope!=null){
 			fDocumentScope.classpathChange();
 		}
 	}
 }
	/*******************************************************************************
	* 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.jsdt.web.core.internal.java;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Vector;

	import org.eclipse.core.filebuffers.FileBuffers;
	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.Position;
	import org.eclipse.wst.jsdt.core.IBuffer;
	import org.eclipse.wst.jsdt.core.ICompilationUnit;
	import org.eclipse.wst.jsdt.core.IJavaElement;
	import org.eclipse.wst.jsdt.core.IJavaProject;
	import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
	import org.eclipse.wst.jsdt.core.ISourceRange;
	import org.eclipse.wst.jsdt.core.JavaModelException;
	import org.eclipse.wst.jsdt.core.LibrarySuperType;
	import org.eclipse.wst.jsdt.core.WorkingCopyOwner;
	import org.eclipse.wst.jsdt.internal.core.DocumentContextFragmentRoot;
	import org.eclipse.wst.jsdt.internal.core.SourceRefElement;
	import org.eclipse.wst.jsdt.web.core.internal.Logger;
	import org.eclipse.wst.jsdt.web.core.internal.project.JsWebNature;
	import org.eclipse.wst.sse.core.StructuredModelManager;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;

	/**
	* @author brad childs
	*/
	public class JsTranslation implements IJsTranslation {

	private static final boolean DEBUG;
	static {
	String value = Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jsptranslation"); //$NON-NLS-1$
	DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$
	}

	private ICompilationUnit fCompilationUnit = null;
	private DocumentContextFragmentRoot fDocumentScope;
	private IJavaProject fJavaProject = null;
	private byte[] fLock = null;
	private IProgressMonitor fProgressMonitor = null;
	private IStructuredDocument fHtmlDocument;
	private String fModelBaseLocation;


	private static final String SUPER_TYPE_NAME = "Window";
	private static final String SUPER_TYPE_LIBRARY = "org.eclipse.wst.jsdt.launching.baseBrowserLibrary";

	private JsTranslator translator;

	private String mangledName;
	private boolean listenForChanges;

	// public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj) {
	// fLock = new byte[0];
	// fJavaProject = javaProj;
	// fHtmlDocument = htmlDocument;
	// setBaseLocation();
	// translator = new JsTranslator(htmlDocument, fModelBaseLocation);
	// mangledName = createMangledName();
	// listenForChanges = true;
	// }

	public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj, boolean listenForChanges) {
	fLock = new byte[0];
	fJavaProject = javaProj;
	fHtmlDocument = htmlDocument;
	setBaseLocation();
	translator = new JsTranslator(htmlDocument, fModelBaseLocation,listenForChanges);
	mangledName = createMangledName();
	this.listenForChanges=listenForChanges;
	}

	public IJavaProject getJavaProject() {
	return fJavaProject;
	}

	private IPackageFragmentRoot getDocScope(boolean reset) {
	if(fDocumentScope==null) {
	IProject project = getJavaProject().getProject();
	IResource absoluteRoot = ((IContainer)getJavaProject().getResource()).findMember( WebRootFinder.getWebContentFolder(fJavaProject.getProject()));
	fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, getFile(), WebRootFinder.getWebContentFolder(fJavaProject.getProject()), WebRootFinder.getServerContextRoot(fJavaProject.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
	fDocumentScope.setIncludedFiles(translator.getRawImports());
	return fDocumentScope;
	}

	if(reset) fDocumentScope.setIncludedFiles(translator.getRawImports());
	return fDocumentScope;
	}

	private void setBaseLocation() {
	IDOMModel xmlModel=null;
	try {
	xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getExistingModelForRead(fHtmlDocument);
	if(xmlModel==null) {
	xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getModelForRead(fHtmlDocument);
	}
	fModelBaseLocation = xmlModel.getBaseLocation();
	}finally {
	if(xmlModel!=null) xmlModel.releaseFromRead();
	}
	// return xmlModel;
	}

	public IFile getFile() {
	return FileBuffers.getWorkspaceFileAtLocation(new Path(fModelBaseLocation));
	}


	public IDocument getHtmlDocument() {
	return fHtmlDocument;
	}

	public int getMissingTagStart() {
	return translator.getMissingEndTagRegionStart();
	}

	private String getWebRoot() {
	return WebRootFinder.getWebContentFolder(fJavaProject.getProject()).toString();
	}

	public String getDirectoryUnderRoot() {
	String webRoot = getWebRoot() ;
	IPath projectWebRootPath = getJavaProject().getPath().append(webRoot);
	IPath filePath = new Path(fModelBaseLocation).removeLastSegments(1);
	return filePath.removeFirstSegments(projectWebRootPath.matchingFirstSegments(filePath)).toString();
	}

	/**
	* Originally from ReconcileStepForJava. Creates an ICompilationUnit from
	* the contents of the JSP document.
	*
	* @return an ICompilationUnit from the contents of the JSP document
	*/
	private ICompilationUnit createCompilationUnit() throws JavaModelException {
	//System.out.println("------------------------- CREATING CU ----------------------------");
	LibrarySuperType superType = new LibrarySuperType(SUPER_TYPE_LIBRARY, fJavaProject, SUPER_TYPE_NAME);

	IPackageFragmentRoot root = getDocScope(true);
	//String directoryUnderWebroot = getDirectoryUnderRoot();
	ICompilationUnit cu = root.getPackageFragment("").getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
	//ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION,SUPER_TYPE_NAME).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());

	IBuffer buffer;
	try {
	buffer = cu.getBuffer();
	} catch (JavaModelException e) {
	e.printStackTrace();
	buffer = null;
	}
	if (buffer != null) {
	translator.setBuffer(buffer);
	}
	return cu;
	}

	public String fixupMangledName(String displayString) {
	if (displayString == null) {
	return null;
	}
	return displayString.replaceAll(getMangledName() + ".js", getHtmlPageName());
	}

	public IJavaElement[] getAllElementsInJsRange(int javaPositionStart, int javaPositionEnd) {
	IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
	IJavaElement[] result = EMTPY_RESULT_SET;
	IJavaElement[] allChildren = null;
	try {
	allChildren = getCompilationUnit().getChildren();
	} catch (JavaModelException e) {
	}
	Vector validChildren = new Vector();
	for (int i = 0; i < allChildren.length; i++) {
	if (allChildren[i] instanceof IJavaElement && allChildren[i].getElementType() != IJavaElement.PACKAGE_DECLARATION) {
	ISourceRange range = getJSSourceRangeOf(allChildren[i]);
	if (javaPositionStart <= range.getOffset() && range.getLength() + range.getOffset() <= (javaPositionEnd)) {
	validChildren.add(allChildren[i]);
	} else if (allChildren[i].getElementType() == IJavaElement.TYPE) {
	validChildren.add(allChildren[i]);
	}
	}
	}
	if (validChildren.size() > 0) {
	result = (IJavaElement[]) validChildren.toArray(new IJavaElement[] {});
	}
	if (result == null \|\| result.length == 0) {
	return EMTPY_RESULT_SET;
	}
	return result;
	}

	public ICompilationUnit getCompilationUnit() {
	synchronized (fLock) {
	try {
	if (fCompilationUnit == null) {
	fCompilationUnit = createCompilationUnit();
	return fCompilationUnit;
	}

	} catch (JavaModelException jme) {
	if (JsTranslation.DEBUG) {
	Logger.logException("error creating JSP working copy... ", jme); //$NON-NLS-1$
	}
	}

	}
	getDocScope(true);
	try {
	fCompilationUnit = fCompilationUnit.getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
	//fCompilationUnit.makeConsistent(getProgressMonitor());
	} catch (JavaModelException ex) {
	// TODO Auto-generated catch block
	ex.printStackTrace();
	}
	return fCompilationUnit;
	}

	public IJavaElement[] getElementsFromJsRange(int javaPositionStart, int javaPositionEnd) {
	IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
	IJavaElement[] result = EMTPY_RESULT_SET;
	try {
	ICompilationUnit cu = getCompilationUnit();
	if (cu != null) {
	synchronized (fLock) {
	int cuDocLength = cu.getBuffer().getLength();
	int javaLength = javaPositionEnd - javaPositionStart;
	if (cuDocLength > 0 && javaPositionStart >= 0 && javaLength >= 0 && javaPositionEnd <= cuDocLength) {
	result = cu.codeSelect(javaPositionStart, javaLength, getWorkingCopyOwner());
	}
	}
	}
	if (result == null \|\| result.length == 0) {
	return EMTPY_RESULT_SET;
	}
	} catch (JavaModelException x) {
	Logger.logException(x);
	}
	return result;
	}

	private String getHtmlPageName() {
	IPath path = new Path(fModelBaseLocation);
	return path.lastSegment();

	}

	public String getHtmlText() {
	return fHtmlDocument.get();
	}

	public String getJavaPath() {
	//String webRoot = getWebRoot() ;
	//IPackageFragmentRoot root = getDocScope(false);
	//String cuPath = root.getPath().append("/" + getMangledName() + JsDataTypes.BASE_FILE_EXTENSION ).toString();
	//ICompilationUnit cu = getCompilationUnit();
	//IPath realCuPath = cu.getPath();
	IPath rootPath = new Path(fModelBaseLocation).removeLastSegments(1);
	String cuPath = rootPath.append("/" + getMangledName() + JsDataTypes.BASE_FILE_EXTENSION ).toString();
	return cuPath;
	}

	public IJavaElement getJsElementAtOffset(int jsOffset) {
	IJavaElement elements = null;
	try {
	elements = getCompilationUnit().getElementAt(jsOffset);
	} catch (JavaModelException e) {
	// TODO Auto-generated catch block
	if (JsTranslation.DEBUG) {
	Logger.logException("error retrieving java elemtnt from compilation unit... ", e); //$NON-NLS-1$
	}
	// }
	}
	return elements;
	}

	private ISourceRange getJSSourceRangeOf(IJavaElement element) {
	// returns the offset in html of given element
	ISourceRange range = null;
	if (element instanceof SourceRefElement) {
	try {
	range = ((SourceRefElement) element).getSourceRange();
	} catch (JavaModelException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	}
	return range;
	}

	public String getJsText() {
	return translator.getJsText();
	}

	public String getMangledName() {
	return this.mangledName;
	}

	private String createMangledName() {
	return JsNameManglerUtil.mangle(fModelBaseLocation);
	}

	/**
	*
	* @return the problem requestor for the CompilationUnit in this
	* JSPTranslation
	*/
	private JsProblemRequestor getProblemRequestor() {
	return CompilationUnitHelper.getInstance().getProblemRequestor();
	}

	public List getProblems() {
	List problems = getProblemRequestor().getCollectedProblems();
	getProblemRequestor().endReporting();
	return problems != null ? problems : new ArrayList();
	}

	private IProgressMonitor getProgressMonitor() {
	if (fProgressMonitor == null) {
	fProgressMonitor = new NullProgressMonitor();
	}
	return fProgressMonitor;
	}

	public WorkingCopyOwner getWorkingCopyOwner() {
	return CompilationUnitHelper.getInstance().getWorkingCopyOwner();
	}

	public boolean ifOffsetInImportNode(int offset) {
	Position[] importRanges = translator.getImportHtmlRanges();
	for (int i = 0; i < importRanges.length; i++) {
	if (importRanges[i].includes(offset)) {
	return true;
	}
	}
	return false;
	}

	public void reconcileCompilationUnit() {
	// if(true) return;
	ICompilationUnit cu = getCompilationUnit();
	if (fCompilationUnit == null) {
	return;
	}
	if (cu != null) {
	try {
	synchronized (fLock) {
	// if(false)
	//cu.makeConsistent(getProgressMonitor());
	cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(), getProgressMonitor());
	}
	} catch (JavaModelException e) {
	Logger.logException(e);
	}
	}
	}


	public void release() {
	if(translator!=null) translator.release();
	synchronized (fLock) {
	if (fCompilationUnit != null) {
	try {
	if (JsTranslation.DEBUG) {
	System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
	System.out.println("(-) JSPTranslation [" + this + "] discarding CompilationUnit: " + fCompilationUnit); //$NON-NLS-1$ //$NON-NLS-2$
	System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
	}
	fCompilationUnit.discardWorkingCopy();
	} catch (JavaModelException e) {
	// we're done w/ it anyway
	}
	}
	}
	}

	public void setProblemCollectingActive(boolean collect) {
	ICompilationUnit cu = getCompilationUnit();
	if (cu != null) {
	getProblemRequestor().setIsActive(collect);
	}
	}

	public void classpathChange() {

	if(fDocumentScope!=null){
	fDocumentScope.classpathChange();
	}
	}
	}