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/*******************************************************************************
* Copyright (c) 2004, 2006 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 org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jst.jsp.core.internal.provisional.JSP11Namespace;
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.xml.core.internal.provisional.document.IDOMNode;
import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
import org.eclipse.wst.xml.ui.internal.contentassist.ContentAssistRequest;
/**
* @plannedfor 1.0
*/
public class JSPUseBeanContentAssistProcessor extends JSPDummyContentAssistProcessor {
public JSPUseBeanContentAssistProcessor() {
super();
}
protected void addAttributeValueProposals(ContentAssistRequest contentAssistRequest) {
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());
start++;
length = matchString.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 {
if (attributeName.equals(JSP11Namespace.ATTR_NAME_CLASS)) {
// class is the concrete implementation class
IResource resource = getResource(contentAssistRequest);
ICompletionProposal[] classProposals = JavaTypeFinder.getClassProposals(resource, start, length);
if (classProposals != null) {
for (int j = 0; j < classProposals.length; j++) {
JavaTypeCompletionProposal proposal = (JavaTypeCompletionProposal) classProposals[j];
if (matchString.length() == 0 || proposal.getQualifiedName().toLowerCase().startsWith(matchString.toLowerCase()) || proposal.getShortName().toLowerCase().startsWith(matchString.toLowerCase()))
contentAssistRequest.addProposal(proposal);
}
}
} else if (attributeName.equals(JSP11Namespace.ATTR_NAME_TYPE)) {
// type is the more general type for the bean
// which means it may be an interface
IResource resource = getResource(contentAssistRequest);
ICompletionProposal[] typeProposals = JavaTypeFinder.getTypeProposals(resource, start, length);
if (typeProposals != null) {
for (int j = 0; j < typeProposals.length; j++) {
JavaTypeCompletionProposal proposal = (JavaTypeCompletionProposal) typeProposals[j];
if (matchString.length() == 0 || proposal.getQualifiedName().toLowerCase().startsWith(matchString.toLowerCase()) || proposal.getShortName().toLowerCase().startsWith(matchString.toLowerCase()))
contentAssistRequest.addProposal(proposal);
}
}
} else if (attributeName.equals(JSP11Namespace.ATTR_NAME_BEAN_NAME)) {
IResource resource = getResource(contentAssistRequest);
ICompletionProposal[] beanNameProposals = JavaTypeFinder.getBeanProposals(resource, start, length);
if (beanNameProposals != null) {
for (int j = 0; j < beanNameProposals.length; j++) {
if (beanNameProposals[j] instanceof CustomCompletionProposal) {
JavaTypeCompletionProposal proposal = (JavaTypeCompletionProposal) beanNameProposals[j];
if (matchString.length() == 0 || proposal.getDisplayString().toLowerCase().startsWith(matchString.toLowerCase()))
contentAssistRequest.addProposal(proposal);
} else if (beanNameProposals[j] instanceof JavaTypeCompletionProposal) {
JavaTypeCompletionProposal proposal = (JavaTypeCompletionProposal) beanNameProposals[j];
if (matchString.length() == 0 || proposal.getQualifiedName().toLowerCase().startsWith(matchString.toLowerCase()) || proposal.getShortName().toLowerCase().startsWith(matchString.toLowerCase()))
contentAssistRequest.addProposal(proposal);
}
}
}
}
}
}
/**
* Returns project request is in
*
* @param request
* @return
*/
private IResource getResource(ContentAssistRequest request) {
IResource resource = null;
String 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) {
baselocation = model.getBaseLocation();
}
} finally {
if (model != null)
model.releaseFromRead();
}
}
}
if (baselocation != null) {
// copied from JSPTranslationAdapter#getJavaProject
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IPath filePath = new Path(baselocation);
IFile file = null;
if (filePath.segmentCount() > 1) {
file = root.getFile(filePath);
}
if (file != null) {
resource = file.getProject();
}
}
return resource;
}
}
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