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/*******************************************************************************
* Copyright (c) 2006 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.help.internal.extension;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.help.AbstractContentExtensionProvider;
import org.eclipse.help.IContentExtension;
import org.eclipse.help.internal.HelpPlugin;
import org.osgi.framework.Bundle;
/*
* Provides the extensions from content extension XML files registered via
* the org.eclipse.help.contentExtension extension point.
*/
public class ContentExtensionFileProvider extends AbstractContentExtensionProvider {
private static final String EXTENSION_POINT_ID_CONTENT_EXTENSION = HelpPlugin.PLUGIN_ID + ".contentExtension"; //$NON-NLS-1$
private static final String ELEMENT_NAME_CONTENT_EXTENSION = "contentExtension"; //$NON-NLS-1$
private static final String ATTRIBUTE_NAME_FILE = "file"; //$NON-NLS-1$
/* (non-Javadoc)
* @see org.eclipse.help.AbstractContentExtensionProvider#getContentExtensions(java.lang.String)
*/
public IContentExtension[] getContentExtensions(String locale) {
List extensions = new ArrayList();
IExtensionRegistry registry = Platform.getExtensionRegistry();
ContentExtensionFileParser parser = new ContentExtensionFileParser();
IConfigurationElement[] elements = registry.getConfigurationElementsFor(EXTENSION_POINT_ID_CONTENT_EXTENSION);
for (int i=0;i<elements.length;++i) {
if (ELEMENT_NAME_CONTENT_EXTENSION.equals(elements[i].getName())) {
String file = elements[i].getAttribute(ATTRIBUTE_NAME_FILE);
String bundleId = elements[i].getContributor().getName();
Bundle bundle = Platform.getBundle(bundleId);
if (bundle != null) {
try {
IContentExtension[] ext = parser.parse(bundle, file);
for (int j=0;j<ext.length;++j) {
extensions.add(ext[j]);
}
}
catch (Throwable t) {
String msg = "Unable to load user assistance content extension " + file + " from plug-in " + bundleId; //$NON-NLS-1$ //$NON-NLS-2$
HelpPlugin.logError(msg, t);
}
}
}
}
return (IContentExtension[])extensions.toArray(new IContentExtension[extensions.size()]);
}
}
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