/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.eclipse.editors;
import java.util.List;
import java.util.Map;
import org.drools.compiler.compiler.DroolsParserException;
import org.drools.eclipse.DRLInfo;
import org.drools.eclipse.DroolsEclipsePlugin;
import org.drools.eclipse.ProcessInfo;
import org.drools.compiler.lang.descr.AttributeDescr;
import org.drools.compiler.lang.descr.BaseDescr;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.hyperlink.IHyperlink;
import org.eclipse.jface.text.hyperlink.IHyperlinkDetector;
import org.jbpm.workflow.core.node.RuleSetNode;
/**
* DRL element hyperlink detector.
*/
public class DRLHyperlinkDetector implements IHyperlinkDetector {
private AbstractRuleEditor editor;
public DRLHyperlinkDetector(final AbstractRuleEditor editor) {
this.editor = editor;
}
public IHyperlink[] detectHyperlinks(ITextViewer textViewer, final IRegion region, boolean canShowMultipleHyperlinks) {
if (region == null || textViewer == null) {
return null;
}
IDocument document = textViewer.getDocument();
if (document == null) {
return null;
}
final BaseDescr descr = getDescr(region.getOffset());
if(descr instanceof AttributeDescr) {
return createHyperlinks((AttributeDescr) descr);
}
return null;
}
protected IHyperlink[] createHyperlinks(AttributeDescr descr) {
if(((AttributeDescr)descr).getName().equals("ruleflow-group")) {
Map<ProcessInfo, List<RuleSetNode>> nodes = DroolsEclipsePlugin.getDefault().getRuleSetNodeByFlowGroup(descr.getValue());
if(nodes.size()>0) {
IHyperlink[] result = new IHyperlink[nodes.size()];
int i = 0;
for (ProcessInfo processInfo : nodes.keySet()) {
result[i++] = new RuleFlowGroupHyperlink(descr,processInfo, nodes.get(processInfo));
}
return result;
}
}
return null;
}
private BaseDescr getDescr(int offset) {
try {
DRLInfo info = DroolsEclipsePlugin.getDefault().parseResource(
editor, true, false);
return DescrUtil.getDescr(info.getPackageDescr(), offset);
} catch (DroolsParserException exc) {
return null;
}
}
}