| /******************************************************************************* |
| * 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; |
| |
| import org.eclipse.jface.viewers.ISelection; |
| |
| /** |
| * A selection service tracks the selection within an object. |
| * <p> |
| * A listener that wants to be notified when the selection becomes |
| * <code>null</code> must implement the <code>INullSelectionListener</code> |
| * interface. |
| * </p> |
| * <p> |
| * This service can be acquired from your service locator: |
| * <pre> |
| * ISelectionService service = (ISelectionService) getSite().getService(ISelectionService.class); |
| * </pre> |
| * <ul> |
| * <li>This service is not available globally, only from the workbench window level down.</li> |
| * </ul> |
| * </p> |
| * |
| * @see org.eclipse.ui.ISelectionListener |
| * @see org.eclipse.ui.INullSelectionListener |
| * @see org.eclipse.ui.services.IServiceLocator#getService(Class) |
| * @noimplement This interface is not intended to be implemented by clients. |
| */ |
| public interface ISelectionService { |
| /** |
| * Adds the given selection listener. |
| * 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 selection listener |
| * @see #removeSelectionListener(ISelectionListener) |
| */ |
| public void addSelectionListener(ISelectionListener listener); |
| |
| /** |
| * Adds a part-specific selection listener which is notified when selection changes |
| * in the part with the given id. This is independent of part activation - the part |
| * need not be active for notification to be sent. |
| * <p> |
| * When the part is created, the listener is passed the part's initial selection. |
| * When the part is disposed, the listener is passed a <code>null</code> selection, |
| * but only if the listener implements <code>INullSelectionListener</code>. |
| * </p> |
| * <p> |
| * Note: This will not correctly track editor parts as each editor does |
| * not have a unique partId. |
| * </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 partId the id of the part to track |
| * @param listener a selection listener |
| * @since 2.0 |
| * @see #removeSelectionListener(String, ISelectionListener) |
| */ |
| public void addSelectionListener(String partId, ISelectionListener listener); |
| |
| /** |
| * Adds the given post selection listener.It is equivalent to selection |
| * changed if the selection was triggered by the mouse but it has a |
| * delay if the selection is triggered by the keyboard arrows. |
| * Has no effect if an identical listener is already registered. |
| * |
| * Note: Works only for StructuredViewer(s). |
| * <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 selection listener |
| * @see #removePostSelectionListener(ISelectionListener) |
| */ |
| public void addPostSelectionListener(ISelectionListener listener); |
| |
| /** |
| * Adds a part-specific selection listener which is notified when selection changes |
| * in the part with the given id. This is independent of part activation - the part |
| * need not be active for notification to be sent. |
| * <p> |
| * When the part is created, the listener is passed the part's initial selection. |
| * When the part is disposed, the listener is passed a <code>null</code> selection, |
| * but only if the listener implements <code>INullSelectionListener</code>. |
| * </p> |
| * <p> |
| * Note: This will not correctly track editor parts as each editor does |
| * not have a unique partId. |
| * </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 partId the id of the part to track |
| * @param listener a selection listener |
| * @since 2.0 |
| * @see #removePostSelectionListener(String, ISelectionListener) |
| */ |
| public void addPostSelectionListener(String partId, |
| ISelectionListener listener); |
| |
| /** |
| * Returns the current selection in the active part. If the selection in the |
| * active part is <em>undefined</em> (the active part has no selection provider) |
| * the result will be <code>null</code>. |
| * |
| * @return the current selection, or <code>null</code> if undefined |
| */ |
| public ISelection getSelection(); |
| |
| /** |
| * Returns the current selection in the part with the given id. If the part is not open, |
| * or if the selection in the active part is <em>undefined</em> (the active part has no selection provider) |
| * the result will be <code>null</code>. |
| * |
| * @param partId the id of the part |
| * @return the current selection, or <code>null</code> if undefined |
| * @since 2.0 |
| */ |
| public ISelection getSelection(String partId); |
| |
| /** |
| * Removes the given selection listener. |
| * Has no effect if an identical listener is not registered. |
| * |
| * @param listener a selection listener |
| */ |
| public void removeSelectionListener(ISelectionListener listener); |
| |
| /** |
| * Removes the given part-specific selection listener. |
| * Has no effect if an identical listener is not registered for the given part id. |
| * |
| * @param partId the id of the part to track |
| * @param listener a selection listener |
| * @since 2.0 |
| */ |
| public void removeSelectionListener(String partId, |
| ISelectionListener listener); |
| |
| /** |
| * Removes the given post selection listener. |
| * Has no effect if an identical listener is not registered. |
| * |
| * @param listener a selection listener |
| */ |
| public void removePostSelectionListener(ISelectionListener listener); |
| |
| /** |
| * Removes the given part-specific post selection listener. |
| * Has no effect if an identical listener is not registered for the given part id. |
| * |
| * @param partId the id of the part to track |
| * @param listener a selection listener |
| * @since 2.0 |
| */ |
| public void removePostSelectionListener(String partId, |
| ISelectionListener listener); |
| } |