| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Sergey Prigogin (Google) - use parameterized types (bug 442021) |
| *******************************************************************************/ |
| package org.eclipse.core.runtime; |
| |
| import org.eclipse.core.internal.runtime.AdapterManager; |
| |
| /** |
| * An abstract superclass implementing the <code>IAdaptable</code> |
| * interface. <code>getAdapter</code> invocations are directed |
| * to the platform's adapter manager. |
| * <p> |
| * Note: In situations where it would be awkward to subclass this |
| * class, the same effect can be achieved simply by implementing |
| * the {@link IAdaptable} interface and explicitly forwarding |
| * the <code>getAdapter</code> request to an implementation |
| * of the {@link IAdapterManager} service. The method would look like: |
| * </p> |
| * <pre> |
| * public <T> T getAdapter(Class<T> adapter) { |
| * IAdapterManager manager = ...;//lookup the IAdapterManager service |
| * return manager.getAdapter(this, adapter); |
| * } |
| * </pre> |
| * <p> |
| * This class can be used without OSGi running. |
| * </p><p> |
| * Clients may subclass. |
| * </p> |
| * |
| * @see IAdapterManager |
| * @see IAdaptable |
| */ |
| public abstract class PlatformObject implements IAdaptable { |
| /** |
| * Constructs a new platform object. |
| */ |
| public PlatformObject() { |
| super(); |
| } |
| |
| /** |
| * Returns an object which is an instance of the given class |
| * associated with this object. Returns <code>null</code> if |
| * no such object can be found. |
| * <p> |
| * This implementation of the method declared by <code>IAdaptable</code> |
| * passes the request along to the platform's adapter manager; roughly |
| * <code>Platform.getAdapterManager().getAdapter(this, adapter)</code>. |
| * Subclasses may override this method (however, if they do so, they |
| * should invoke the method on their superclass to ensure that the |
| * Platform's adapter manager is consulted). |
| * </p> |
| * |
| * @param adapter the class to adapt to |
| * @return the adapted object or <code>null</code> |
| * @see IAdaptable#getAdapter(Class) |
| */ |
| @Override |
| public <T> T getAdapter(Class<T> adapter) { |
| return AdapterManager.getDefault().getAdapter(this, adapter); |
| } |
| } |