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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
*******************************************************************************/
/*
* Created on Jun 13, 2004
*/
package org.eclipse.jst.j2ee.internal.web.jfaces.extension;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jem.util.RegistryReader;
import org.eclipse.jst.j2ee.internal.web.plugin.WebPlugin;
/**
* @author vijayb
*
* This class loads all the extensions that define the correct URL string for the Java Server Faces
* file
*
*/
public class FileURLExtensionReader extends RegistryReader {
static FileURLExtensionReader instance = null;
protected List fileURLExtensions;
/**
* @param registry
* @param pluginID
* @param extensionPoint
*/
public FileURLExtensionReader() {
super(WebPlugin.PLUGIN_ID, "fileURL"); //$NON-NLS-1$
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.common.frameworks.internal.RegistryReader#readElement(org.eclipse.core.runtime.IConfigurationElement)
*/
public boolean readElement(IConfigurationElement element) {
if (FileURLExtension.FILE_URL_EXTENSION.equals(element.getName())) {
addExtension(element);
return true;
}
return false;
}
/**
* Sets the extension point.
*
* @param extensions
* The extensions to set
*/
protected void addExtension(IConfigurationElement newExtension) {
getFileURLExtensions().add(new FileURLExtension(newExtension));
}
/**
* Sets the extension point.
*
* @param extensions
* The extensions to set
*/
protected void addExtensionPoint(FileURLExtensionReader newExtension) {
if (this.fileURLExtensions == null)
this.fileURLExtensions = new ArrayList();
this.fileURLExtensions.add(newExtension);
}
/**
* @return the appropriate handler for the project based on priorities of those which are
* available and enabled
*/
public FileURL getFilesURL() {
FileURLExtension fileURLExt;
for (Iterator fileURLExtItr = getFileURLExtensions().iterator(); fileURLExtItr.hasNext();) {
fileURLExt = (FileURLExtension) fileURLExtItr.next();
return fileURLExt.getInstance();
}
return null;
}
/**
* Gets the instance.
*
* @return Returns a FileURLExtensionReader
*/
public static FileURLExtensionReader getInstance() {
if (instance == null) {
instance = new FileURLExtensionReader();
instance.readRegistry();
}
return instance;
}
/**
* @return Returns the handlerExtensions.
*/
protected List getFileURLExtensions() {
if (this.fileURLExtensions == null)
this.fileURLExtensions = new ArrayList();
return this.fileURLExtensions;
}
}
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