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/*******************************************************************************
* Copyright (c) 2003, 2005 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.common.internal.emfworkbench.edit;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jem.util.RegistryReader;
import org.eclipse.wst.common.internal.emfworkbench.integration.EMFWorkbenchEditPlugin;
/**
* @author mdelder
*/
class EditModelExtensionRegistry extends RegistryReader {
private static EditModelExtensionRegistry INSTANCE = null;
public static final String EDIT_MODEL_EXT_ELEMENT = "editModelExtension"; //$NON-NLS-1$
public static final String EDIT_MODEL_ID_ATTR = "editModelID"; //$NON-NLS-1$
public static final String GROUP_ID_ATTR = "functionGroupID"; //$NON-NLS-1$
private Map extensions = null;
protected EditModelExtensionRegistry() {
super(EMFWorkbenchEditPlugin.ID, EMFWorkbenchEditPlugin.EDIT_MODEL_EXTENSION_REGISTRY_EXTENSION_POINT);
}
public static EditModelExtensionRegistry getInstance() {
if (INSTANCE == null) {
INSTANCE = new EditModelExtensionRegistry();
INSTANCE.readRegistry();
}
return INSTANCE;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.common.frameworks.internal.RegistryReader#readElement(org.eclipse.core.runtime.IConfigurationElement)
*/
public boolean readElement(IConfigurationElement element) {
boolean result = false;
Collection extensionsByID = null;
EditModelExtension editModelExtension = null;
if (element.getName().equals(EDIT_MODEL_EXT_ELEMENT)) {
editModelExtension = new EditModelExtension(element);
extensionsByID = (Collection) getExtensions().get(editModelExtension.getEditModelID());
if (extensionsByID == null) {
extensionsByID = new ArrayList();
getExtensions().put(editModelExtension.getEditModelID(), extensionsByID);
}
extensionsByID.add(editModelExtension);
result = true;
}
return result;
}
protected Map getExtensions() {
if (extensions == null)
extensions = new HashMap();
return extensions;
}
/**
* @return
*/
public Collection getEditModelResources(Object editModelID) {
//TODO - Cache the resources
Collection editModelResources = new ArrayList();
Collection editModelExtensions = (Collection) getExtensions().get(editModelID);
if (editModelExtensions == null || editModelExtensions.size() == 0)
return Collections.EMPTY_LIST;
Iterator itr = editModelExtensions.iterator();
while (itr.hasNext()) {
EditModelExtension ext = (EditModelExtension) itr.next();
editModelResources.addAll(ext.getResources());
}
return (!editModelExtensions.isEmpty()) ? editModelResources : Collections.EMPTY_LIST;
}
}
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