/*******************************************************************************
* Copyright (c) 2010 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.IResource;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jst.jsp.core.internal.provisional.JSP11Namespace;
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.contentassist.CompletionProposalInvocationContext;
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;
import org.eclipse.wst.xml.ui.internal.contentassist.DefaultXMLCompletionProposalComputer;
/**
* <p>Compute JSP use bean completion proposals</p>
*/
public class JSPUseBeanCompletionProposalComputer extends
DefaultXMLCompletionProposalComputer {
/**
* @see org.eclipse.wst.xml.ui.internal.contentassist.DefaultXMLCompletionProposalComputer#addAttributeValueProposals(org.eclipse.wst.xml.ui.internal.contentassist.ContentAssistRequest, org.eclipse.wst.sse.ui.contentassist.CompletionProposalInvocationContext)
*/
protected void addAttributeValueProposals(
ContentAssistRequest contentAssistRequest,
CompletionProposalInvocationContext context) {
IDOMNode node = (IDOMNode) contentAssistRequest.getNode();
//only add attribute value proposals for specific elements
if(node.getNodeName().equals(JSP11Namespace.ElementName.USEBEAN)) {
// 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 = JSPContentAssistHelper.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 = JSPContentAssistHelper.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 = JSPContentAssistHelper.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);
}
}
}
}
}
}
}
}