/*
* 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 org.drools.eclipse.editors.completion.DefaultCompletionProcessor;
import org.drools.eclipse.editors.completion.RuleCompletionProcessor;
import org.drools.eclipse.editors.scanners.DRLPartionScanner;
import org.drools.eclipse.editors.scanners.DRLScanner;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.reconciler.IReconciler;
import org.eclipse.jface.text.reconciler.MonoReconciler;
import org.eclipse.jface.text.rules.BufferedRuleBasedScanner;
import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.source.DefaultAnnotationHover;
import org.eclipse.jface.text.source.IAnnotationHover;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
/**
* Source viewer config wires up the syntax highlighting, partitioning
* and content assistance.
*/
public class DRLSourceViewerConfig extends SourceViewerConfiguration {
private DRLScanner scanner;
private AbstractRuleEditor editor;
public DRLSourceViewerConfig(AbstractRuleEditor editor) {
this.editor = editor;
}
protected AbstractRuleEditor getEditor() {
return editor;
}
protected DRLScanner getScanner() {
if (scanner == null) {
scanner = new DRLScanner();
}
return scanner;
}
/**
* Define reconciler - this has to be done for each partition.
* Currently there are 3 partitions, Inside rule, outside rule and inside comment.
*/
public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
PresentationReconciler reconciler = new PresentationReconciler();
//bucket partition... (everything else outside a rule)
DefaultDamagerRepairer dr = new DefaultDamagerRepairer(getScanner());
reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
//inside a rule partition
dr = new DefaultDamagerRepairer(getScanner());
reconciler.setDamager(dr, DRLPartionScanner.RULE_PART_CONTENT);
reconciler.setRepairer(dr, DRLPartionScanner.RULE_PART_CONTENT);
//finally, inside a multi line comment.
dr = new DefaultDamagerRepairer(new SingleTokenScanner(
new TextAttribute(ColorManager.getInstance().getColor(
ColorManager.SINGLE_LINE_COMMENT))));
reconciler.setDamager(dr, DRLPartionScanner.RULE_COMMENT);
reconciler.setRepairer(dr, DRLPartionScanner.RULE_COMMENT);
return reconciler;
}
/**
* Single token scanner, used for scanning for multiline comments mainly.
*/
static class SingleTokenScanner extends BufferedRuleBasedScanner {
public SingleTokenScanner(TextAttribute attribute) {
setDefaultReturnToken(new Token(attribute));
}
}
/**
* Get the appropriate content assistance, for each partition.
*/
public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
ContentAssistant assistant = new ContentAssistant();
//setup the content assistance, which is
//sensitive to the partition that it is in.
assistant.setContentAssistProcessor(
new DefaultCompletionProcessor(editor), IDocument.DEFAULT_CONTENT_TYPE);
assistant.setContentAssistProcessor(
new RuleCompletionProcessor(editor), DRLPartionScanner.RULE_PART_CONTENT);
assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
return assistant;
}
public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
return DRLPartionScanner.LEGAL_CONTENT_TYPES;
}
public IReconciler getReconciler(ISourceViewer sourceViewer) {
MonoReconciler reconciler = null;
if (sourceViewer != null) {
reconciler = new MonoReconciler(
new DRLReconcilingStrategy(sourceViewer, editor), false);
reconciler.setDelay(500);
reconciler.setProgressMonitor(new NullProgressMonitor());
}
return reconciler;
}
public IAnnotationHover getOverviewRulerAnnotationHover(ISourceViewer sourceViewer) {
return new DefaultAnnotationHover();
}
public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) {
return new DefaultAnnotationHover();
}
}