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/*******************************************************************************
* Copyright (c) 2000, 2008 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.ui;
/**
* A part service tracks the creation and activation of parts within a
* workbench page.
* <p>
* This service can be acquired from your service locator:
* <pre>
* IPartService service = (IPartService) getSite().getService(IPartService.class);
* </pre>
* <ul>
* <li>This service is not available globally, only from the workbench window level down.</li>
* </ul>
* </p>
*
* @see IWorkbenchPage
* @see org.eclipse.ui.services.IServiceLocator#getService(Class)
* @noimplement This interface is not intended to be implemented by clients.
*/
public interface IPartService {
/**
* Adds the given listener for part lifecycle events.
* Has no effect if an identical listener is already registered.
* <p>
* <b>Note:</b> listeners should be removed when no longer necessary. If
* not, they will be removed when the IServiceLocator used to acquire this
* service is disposed.
* </p>
*
* @param listener a part listener
* @see #removePartListener(IPartListener)
*/
public void addPartListener(IPartListener listener);
/**
* Adds the given listener for part lifecycle events.
* Has no effect if an identical listener is already registered.
* <p>
* As of 3.5, the IPartListener2 can also implement IPageChangedListener
* to be notified about any parts that implement IPageChangeProvider and
* post PageChangedEvents.
* </p>
* <p>
* <b>Note:</b> listeners should be removed when no longer necessary. If
* not, they will be removed when the IServiceLocator used to acquire this
* service is disposed.
* </p>
*
* @param listener a part listener
* @see #removePartListener(IPartListener2)
* @see org.eclipse.jface.dialogs.IPageChangeProvider
* @see org.eclipse.jface.dialogs.IPageChangedListener
*/
public void addPartListener(IPartListener2 listener);
/**
* Returns the active part.
*
* @return the active part, or <code>null</code> if no part is currently active
*/
public IWorkbenchPart getActivePart();
/**
* Returns the active part reference.
*
* @return the active part reference, or <code>null</code> if no part
* is currently active
*/
public IWorkbenchPartReference getActivePartReference();
/**
* Removes the given part listener.
* Has no effect if an identical listener is not registered.
*
* @param listener a part listener
*/
public void removePartListener(IPartListener listener);
/**
* Removes the given part listener.
* Has no effect if an identical listener is not registered.
*
* @param listener a part listener
*/
public void removePartListener(IPartListener2 listener);
}
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