| /******************************************************************************* |
| * Copyright (c) 2000, 2008 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 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| |
| import org.eclipse.ui.IElementFactory; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.IPersistableElement; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.JavaCore; |
| |
| /** |
| * The JavaElementFactory is used to save and recreate an IJavaElement object. |
| * As such, it implements the IPersistableElement interface for storage |
| * and the IElementFactory interface for recreation. |
| * |
| * @see IMemento |
| * @see IPersistableElement |
| * @see IElementFactory |
| */ |
| public class PersistableJavaElementFactory implements IElementFactory, IPersistableElement { |
| |
| private static final String KEY= "elementID"; //$NON-NLS-1$ |
| private static final String FACTORY_ID= "org.eclipse.jdt.ui.PersistableJavaElementFactory"; //$NON-NLS-1$ |
| |
| private IJavaElement fElement; |
| |
| /** |
| * Create a JavaElementFactory. |
| */ |
| public PersistableJavaElementFactory() { |
| } |
| |
| /** |
| * Create a JavaElementFactory. This constructor is typically used |
| * for our IPersistableElement side. |
| */ |
| public PersistableJavaElementFactory(IJavaElement element) { |
| fElement= element; |
| } |
| |
| /* |
| * @see IElementFactory |
| */ |
| @Override |
| public IAdaptable createElement(IMemento memento) { |
| |
| String identifier= memento.getString(KEY); |
| if (identifier != null) { |
| return JavaCore.create(identifier); |
| } |
| return null; |
| } |
| |
| /* |
| * @see IPersistableElement. |
| */ |
| @Override |
| public String getFactoryId() { |
| return FACTORY_ID; |
| } |
| /* |
| * @see IPersistableElement |
| */ |
| @Override |
| public void saveState(IMemento memento) { |
| memento.putString(KEY, fElement.getHandleIdentifier()); |
| } |
| } |