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/****************************************************************************
* Copyright (c) 2006 IBM, Inc and Composent, Inc.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* Contributors: Chris Aniszczyk <zx@us.ibm.com> - initial API and implementation
*
* SPDX-License-Identifier: EPL-2.0
*****************************************************************************/
package org.eclipse.ecf.core;
import java.util.*;
import org.eclipse.core.runtime.IAdapterManager;
import org.eclipse.ecf.core.events.ContainerDisposeEvent;
import org.eclipse.ecf.core.events.IContainerEvent;
import org.eclipse.ecf.core.security.*;
import org.eclipse.ecf.internal.core.ECFPlugin;
/**
* Abstract implementation of IContainer. Provides implementations of listener
* methods that subsclasses may use to avoid having to implement them
* themselves. This class may be subclassed as needed.
*
*/
public abstract class AbstractContainer implements IContainer {
private final List containerListeners = new ArrayList(5);
public void addListener(IContainerListener l) {
synchronized (containerListeners) {
containerListeners.add(l);
}
}
public void removeListener(IContainerListener l) {
synchronized (containerListeners) {
containerListeners.remove(l);
}
}
public void dispose() {
fireContainerEvent(new ContainerDisposeEvent(getID()));
synchronized (containerListeners) {
containerListeners.clear();
}
}
/**
* Fires a container event
*
* @param event event
*/
protected void fireContainerEvent(IContainerEvent event) {
List toNotify = null;
// Copy array
synchronized (containerListeners) {
toNotify = new ArrayList(containerListeners);
}
// Notify all in toNotify
for (Iterator i = toNotify.iterator(); i.hasNext();) {
IContainerListener l = (IContainerListener) i.next();
l.handleEvent(event);
}
}
public Object getAdapter(Class serviceType) {
if (serviceType == null)
return null;
if (serviceType.isInstance(this)) {
return this;
}
ECFPlugin plugin = ECFPlugin.getDefault();
if (plugin == null)
return null;
IAdapterManager adapterManager = plugin.getAdapterManager();
return (adapterManager == null) ? null : adapterManager.loadAdapter(this, serviceType.getName());
}
protected String getPasswordFromConnectContext(IConnectContext connectContext) throws ContainerConnectException {
String pw = null;
try {
Callback[] callbacks = new Callback[1];
callbacks[0] = new ObjectCallback();
if (connectContext != null) {
CallbackHandler handler = connectContext.getCallbackHandler();
if (handler != null) {
handler.handle(callbacks);
}
}
ObjectCallback cb = (ObjectCallback) callbacks[0];
pw = (String) cb.getObject();
} catch (Exception e) {
throw new ContainerConnectException("Exception in CallbackHandler.handle(<callbacks>)", e); //$NON-NLS-1$
}
return pw;
}
}
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