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/*****************************************************************************
* Copyright (c) 2013 CEA LIST.
*
*
* 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:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.services.viewersearch.impl;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.core.services.IService;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.core.services.ServicesRegistry;
import org.eclipse.papyrus.infra.services.viewersearch.Activator;
import org.eclipse.papyrus.infra.services.viewersearch.IExtendedViewerSearcher;
import org.eclipse.papyrus.infra.services.viewersearch.IViewerSearcher;
import org.eclipse.papyrus.infra.services.viewersearch.Messages;
/**
* The actual implementation of the ViewerSearcherService.
*/
public class ViewerSearchService extends AbstractViewerSearcher implements IService {
public final static String EXTENSION_ID = Activator.PLUGIN_ID + ".viewerSearcher"; //$NON-NLS-1$
public final static String VIEWER_SEARCHER_ID = "id"; //$NON-NLS-1$
public final static String VIEWER_SEARCHER_CLASS = "class"; //$NON-NLS-1$
/** The viewerSearchers that contribute to the service. */
private final Map<String, IViewerSearcher> viewerSearchers = new HashMap<String, IViewerSearcher>();
public ViewerSearchService() {
}
/**
* @see org.eclipse.papyrus.infra.core.services.IService#init(org.eclipse.papyrus.infra.core.services.ServicesRegistry)
*
* @param servicesRegistry
* @throws ServiceException
*/
public void init(ServicesRegistry servicesRegistry) throws ServiceException {
}
/**
* @see org.eclipse.papyrus.infra.core.services.IService#startService()
*
* @throws ServiceException
*/
public void startService() throws ServiceException {
IConfigurationElement[] configurations = Platform.getExtensionRegistry().getConfigurationElementsFor(EXTENSION_ID);
readViewerSearchers(configurations);
}
/**
* Parses the available viewerSearcher from the extension point.
*
* @param configurations
* The extension point IConfigurationElements
*/
private void readViewerSearchers(IConfigurationElement[] configurations) {
viewerSearchers.clear();
for (IConfigurationElement config : configurations) {
try {
if ("viewerSearcher".equals(config.getName())) { //$NON-NLS-1$
String viewerSearcherId = config.getAttribute(VIEWER_SEARCHER_ID);
if (viewerSearcherId == null) {
Activator.log.warn(Messages.ViewerSearcherService_2 + config.getContributor() + Messages.ViewerSearcherService_3 + EXTENSION_ID + Messages.ViewerSearcherService_4 + VIEWER_SEARCHER_ID + Messages.ViewerSearcherService_5);
continue;
}
IViewerSearcher viewerSearcherClass = (IViewerSearcher) config.createExecutableExtension(VIEWER_SEARCHER_CLASS);
if (viewerSearcherClass == null) {
Activator.log.warn(Messages.ViewerSearcherService_6 + config.getContributor() + Messages.ViewerSearcherService_7 + EXTENSION_ID + Messages.ViewerSearcherService_8 + VIEWER_SEARCHER_CLASS + Messages.ViewerSearcherService_9);
continue;
}
if (viewerSearchers.containsKey(viewerSearcherId)) {
Activator.log.warn(Messages.ViewerSearcherService_10 + viewerSearcherId + Messages.ViewerSearcherService_11);
continue;
}
/** Associates an empty viewerSearchers to the context */
viewerSearchers.put(viewerSearcherId, viewerSearcherClass);
}
} catch (Exception ex) {
Activator.log.error("The plugin " + config.getContributor() + " contributed an invalid extension for " + EXTENSION_ID, ex); //$NON-NLS-1$//$NON-NLS-2$
}
}
}
/**
* @see org.eclipse.papyrus.infra.core.services.IService#disposeService()
*
* @throws ServiceException
*/
public void disposeService() throws ServiceException {
viewerSearchers.clear();
}
/**
* Collects viewers from the difference viewerSearcher contributors
*
* @see org.eclipse.papyrus.infra.services.viewersearch.impl.AbstractViewerSearcher#getViewers(java.util.Collection, java.util.Collection)
*
* @param modelElements
* @param models
* @return
*/
@Override
public Map<Object, Map<Object, Object>> getViewers(Collection<Object> modelElements, Collection<ModelSet> models) {
Map<Object, Map<Object, Object>> results = new HashMap<Object, Map<Object, Object>>();
for (String key : viewerSearchers.keySet()) {
IViewerSearcher viewerSearcher = viewerSearchers.get(key);
Map<Object, Map<Object, Object>> subResults = viewerSearcher.getViewers(modelElements, models);
if (subResults != null) {
for (Object viewer : subResults.keySet()) {
if (results.containsKey(viewer)) {
Map<Object, Object> viewMappings = subResults.get(viewer);
Map<Object, Object> resultViewMappings = results.get(viewer);
resultViewMappings.putAll(viewMappings);
} else {
results.put(viewer, subResults.get(viewer));
}
}
}
}
return results;
}
/**
* @see org.eclipse.papyrus.infra.services.viewersearch.impl.AbstractViewerSearcher#getViewersInCurrentModel(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EObject, boolean, boolean)
*
* @param element
* @param container
* @param pagesOnly
* @param openPagesOnly
* @return
*/
@Override
public List<Object> getViewersInCurrentModel(EObject element, EObject container, boolean pagesOnly, boolean openPagesOnly) {
List<Object> results = new ArrayList<Object>();
for (String key : viewerSearchers.keySet()) {
IViewerSearcher viewerSearcher = viewerSearchers.get(key);
if (viewerSearcher instanceof IExtendedViewerSearcher) {
List<Object> subResults = ((IExtendedViewerSearcher) viewerSearcher).getViewersInCurrentModel(element, container, pagesOnly, openPagesOnly);
if (subResults != null) {
for (Object object : subResults) {
if (!results.contains(object)) {
results.add(object);
}
}
}
}
}
return results;
}
}
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