| /******************************************************************************* |
| * Copyright (c) 2000, 2016 IBM Corporation and others. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| *******************************************************************************/ |
| package org.eclipse.dltk.internal.ui.workingsets; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.ui.IElementFactory; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.IPersistableElement; |
| import org.eclipse.ui.PlatformUI; |
| |
| public class Mementos { |
| |
| public static final String TAG_FACTORY_ID = "factoryID"; //$NON-NLS-1$ |
| public static final String TAG_ITEM = "item"; //$NON-NLS-1$ |
| |
| public static void saveItem(IMemento memento, IAdaptable element) { |
| IPersistableElement persistable = element |
| .getAdapter(IPersistableElement.class); |
| if (persistable != null) { |
| memento.putString( |
| TAG_FACTORY_ID, |
| persistable.getFactoryId()); |
| persistable.saveState(memento); |
| } |
| |
| } |
| |
| public static IAdaptable restoreItem(IMemento memento) { |
| return restoreItem(memento, TAG_FACTORY_ID); |
| } |
| |
| public static IAdaptable restoreItem(IMemento memento, String factoryTag) { |
| if (memento == null) |
| return null; |
| String factoryID = memento.getString(factoryTag); |
| if (factoryID == null) return null; |
| IElementFactory factory = PlatformUI.getWorkbench().getElementFactory(factoryID); |
| if (factory == null) return null; |
| return factory.createElement(memento); |
| } |
| } |