| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.internal.ide.dialogs; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.ui.IElementFactory; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.internal.ide.AboutInfo; |
| |
| /** |
| * A simple factory for the welcome editor |
| */ |
| public class WelcomeEditorInputFactory implements IElementFactory { |
| /** |
| * WelcomeEditorInputFactory constructor comment. |
| */ |
| public WelcomeEditorInputFactory() { |
| super(); |
| } |
| |
| /** |
| * Re-creates and returns an object from the state captured within the given |
| * memento. |
| * <p> |
| * Under normal circumstances, the resulting object can be expected to be |
| * persistable; that is, |
| * <pre> |
| * result.getAdapter(org.eclipse.ui.IPersistableElement.class) |
| * </pre> |
| * should not return <code>null</code>. |
| * </p> |
| * |
| * @param memento a memento containing the state for the object |
| * @return an object, or <code>null</code> if the element could not be created |
| */ |
| public IAdaptable createElement(IMemento memento) { |
| // Get the feature id. |
| String versionedFeatureId = memento |
| .getString(WelcomeEditorInput.FEATURE_ID); |
| if (versionedFeatureId == null) { |
| return null; |
| } |
| int colonPos = versionedFeatureId.indexOf(':'); |
| if (colonPos == -1) { |
| // assume the memento is stale or mangled |
| return null; |
| } |
| String featureId = versionedFeatureId.substring(0, colonPos); |
| String versionId = versionedFeatureId.substring(colonPos + 1); |
| // @issue using feature id for plug-in id |
| AboutInfo info = AboutInfo.readFeatureInfo(featureId, versionId); |
| if (info == null) { |
| return null; |
| } |
| return new WelcomeEditorInput(info); |
| } |
| } |