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/*******************************************************************************
* Copyright (c) 2008-2010 Sonatype, Inc.
* 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:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.editor.xml;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.ICompletionProposalExtension5;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.apache.maven.model.InputLocation;
import org.apache.maven.model.InputSource;
import org.apache.maven.model.Model;
import org.apache.maven.project.MavenProject;
import org.eclipse.m2e.editor.xml.internal.Messages;
/**
* insertion proposal for ${ expressions
*
* @author mkleint
*/
public class InsertExpressionProposal implements ICompletionProposal, ICompletionProposalExtension5 {
private static final Logger log = LoggerFactory.getLogger(InsertExpressionProposal.class);
private MavenProject project;
private String key;
private Region region;
private int len = 0;
public InsertExpressionProposal(Region region, String key, MavenProject mvnproject) {
assert project != null;
this.region = region;
this.key = key;
this.project = mvnproject;
}
public Object getAdditionalProposalInfo(IProgressMonitor monitor) {
if(project == null) {
return null;
}
String value = PomTemplateContext.simpleInterpolate(project, "${" + key + "}"); //$NON-NLS-1$ //$NON-NLS-2$
MavenProject mavprj = project;
String loc = null;
if(mavprj != null) {
Model mdl = mavprj.getModel();
if(mdl.getProperties() != null && mdl.getProperties().containsKey(key)) {
if(mdl.getLocation("properties") != null) {
InputLocation location = mdl.getLocation("properties").getLocation(key); //$NON-NLS-1$
if(location != null) {
//MNGECLIPSE-2539 apparently you can have an InputLocation with null input source.
// check!
InputSource source = location.getSource();
if(source != null) {
loc = source.getModelId();
}
}
}
}
}
StringBuffer buff = new StringBuffer();
buff.append("<html>"); //$NON-NLS-1$
if(value != null) {
buff.append(NLS.bind(Messages.InsertExpressionProposal_hint1, value));
}
if(loc != null) {
buff.append(NLS.bind(Messages.InsertExpressionProposal_hint2, loc));
}
buff.append("</html>"); //$NON-NLS-1$
return buff.toString();
}
public void apply(IDocument document) {
int offset = region.getOffset();
String replace = "${" + key + "}"; //$NON-NLS-1$ //$NON-NLS-2$
try {
document.replace(offset, region.getLength(), replace);
len = replace.length();
} catch(BadLocationException e) {
log.error("Cannot apply proposal", e);
}
}
public Point getSelection(IDocument document) {
return new Point(region.getOffset() + len, 0);
}
public String getAdditionalProposalInfo() {
//not used anymore
return null;
}
public String getDisplayString() {
return "${" + key + "}"; //$NON-NLS-1$ //$NON-NLS-2$
}
public Image getImage() {
// TODO what kind of icon to use?
return null;
}
public IContextInformation getContextInformation() {
return null;
}
}
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