/*******************************************************************************
* Copyright (c) 2008 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.wst.sse.ui.internal.correction;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jface.text.quickassist.IQuickAssistProcessor;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.wst.sse.core.internal.Logger;
public class QuickFixRegistry {
private static QuickFixRegistry instance;
public synchronized static QuickFixRegistry getInstance() {
if (instance == null) {
instance = new QuickFixRegistry();
new QuickFixRegistryReader().addHelp(instance);
}
return instance;
}
/**
* Table of queries for marker resolutions
*/
private Map resolutionQueries = new HashMap();
/**
* Resolution class attribute name in configuration element
*/
private static final String ATT_CLASS = "class"; //$NON-NLS-1$
/**
* Adds a resolution query to the registry.
*
* @param query
* a marker query
* @param result
* a result for the given query
* @param element
* the configuration element defining the result
*/
void addResolutionQuery(AnnotationQuery query, AnnotationQueryResult result, IConfigurationElement element) {
addQuery(resolutionQueries, query, result, element);
}
/**
* Adds a query to the given table.
*
* @param table
* the table to which the query is added
* @param query
* a marker query
* @param result
* a result for the given query
* @param element
* the configuration element defining the result
*/
private void addQuery(Map table, AnnotationQuery query, AnnotationQueryResult result, IConfigurationElement element) {
// See if the query is already in the table
Map results = (Map) table.get(query);
if (results == null) {
// Create a new results table
results = new HashMap();
// Add the query to the table
table.put(query, results);
}
if (results.containsKey(result)) {
Collection currentElements = (Collection) results.get(result);
currentElements.add(element);
}
else {
Collection elements = new HashSet();
elements.add(element);
// Add the new result
results.put(result, elements);
}
}
public IQuickAssistProcessor[] getQuickFixProcessors(Annotation anno) {
// Collect all matches
List processors = new ArrayList();
for (Iterator iter = resolutionQueries.keySet().iterator(); iter.hasNext();) {
AnnotationQuery query = (AnnotationQuery) iter.next();
AnnotationQueryResult result = null;
try {
/* AnnotationQuery objects are contributed by extension point */
result = query.performQuery(anno);
}
catch (Exception e) {
Logger.logException(e);
}
if (result != null) {
// See if a matching result is registered
Map resultsTable = (Map) resolutionQueries.get(query);
if (resultsTable.containsKey(result)) {
Iterator elements = ((Collection) resultsTable.get(result)).iterator();
while (elements.hasNext()) {
IConfigurationElement element = (IConfigurationElement) elements.next();
IQuickAssistProcessor processor = null;
try {
processor = (IQuickAssistProcessor) element.createExecutableExtension(ATT_CLASS);
}
catch (CoreException e) {
}
if (processor != null) {
processors.add(processor);
}
}
}
}
}
return (IQuickAssistProcessor[]) processors.toArray(new IQuickAssistProcessor[processors.size()]);
}
}