| /******************************************************************************* |
| * Copyright (c) 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.jdt.internal.ui.actions; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| |
| import org.eclipse.jdt.ui.actions.SelectionDispatchAction; |
| |
| /** |
| * A simple default implementation of a {@link ISelectionProvider}. It stores |
| * the selection and notifies all selection change listeners when the selection |
| * is set. |
| * |
| * Instances of this class can be used as special selection provider |
| * for {@link SelectionDispatchAction}s |
| * |
| * @since 3.4 |
| */ |
| public class SimpleSelectionProvider implements ISelectionProvider { |
| |
| private final ListenerList fSelectionChangedListeners; |
| private ISelection fSelection; |
| |
| /** |
| * Create a new SimpleSelectionProvider |
| */ |
| public SimpleSelectionProvider() { |
| fSelectionChangedListeners= new ListenerList(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection() |
| */ |
| public ISelection getSelection() { |
| return fSelection; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection) |
| */ |
| public void setSelection(ISelection selection) { |
| fSelection= selection; |
| |
| Object[] listeners= fSelectionChangedListeners.getListeners(); |
| for (int i= 0; i < listeners.length; i++) { |
| ((ISelectionChangedListener) listeners[i]).selectionChanged(new SelectionChangedEvent(this, selection)); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) |
| */ |
| public void removeSelectionChangedListener(ISelectionChangedListener listener) { |
| fSelectionChangedListeners.remove(listener); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) |
| */ |
| public void addSelectionChangedListener(ISelectionChangedListener listener) { |
| fSelectionChangedListeners.add(listener); |
| } |
| } |