| /******************************************************************************* |
| * 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.model; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IWorkspaceRoot; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.ui.IElementFactory; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.IPersistableElement; |
| |
| /** |
| * The ResourceFactory is used to save and recreate an IResource object. |
| * As such, it implements the IPersistableElement interface for storage |
| * and the IElementFactory interface for recreation. |
| * |
| * @see IMemento |
| * @see IPersistableElement |
| * @see IElementFactory |
| */ |
| public class ResourceFactory implements IElementFactory, IPersistableElement { |
| |
| // These persistence constants are stored in XML. Do not |
| // change them. |
| private static final String TAG_PATH = "path";//$NON-NLS-1$ |
| |
| private static final String TAG_TYPE = "type";//$NON-NLS-1$ |
| |
| private static final String FACTORY_ID = "org.eclipse.ui.internal.model.ResourceFactory";//$NON-NLS-1$ |
| |
| // IPersistable data. |
| private IResource res; |
| |
| /** |
| * Create a ResourceFactory. This constructor is typically used |
| * for our IElementFactory side. |
| */ |
| public ResourceFactory() { |
| } |
| |
| /** |
| * Create a ResourceFactory. This constructor is typically used |
| * for our IPersistableElement side. |
| */ |
| public ResourceFactory(IResource input) { |
| res = input; |
| } |
| |
| /** |
| * @see IElementFactory |
| */ |
| public IAdaptable createElement(IMemento memento) { |
| // Get the file name. |
| String fileName = memento.getString(TAG_PATH); |
| if (fileName == null) |
| return null; |
| |
| IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot(); |
| String type = memento.getString(TAG_TYPE); |
| if (type == null) { |
| // Old format memento. Create an IResource using findMember. |
| // Will return null for resources in closed projects. |
| res = root.findMember(new Path(fileName)); |
| } else { |
| int resourceType = Integer.parseInt(type); |
| |
| if (resourceType == IResource.ROOT) |
| res = root; |
| else if (resourceType == IResource.PROJECT) |
| res = root.getProject(fileName); |
| else if (resourceType == IResource.FOLDER) |
| res = root.getFolder(new Path(fileName)); |
| else if (resourceType == IResource.FILE) |
| res = root.getFile(new Path(fileName)); |
| } |
| return res; |
| } |
| |
| /** |
| * @see IPersistableElement |
| */ |
| public String getFactoryId() { |
| return FACTORY_ID; |
| } |
| |
| /** |
| * @see IPersistableElement |
| */ |
| public void saveState(IMemento memento) { |
| memento.putString(TAG_PATH, res.getFullPath().toString()); |
| memento.putString(TAG_TYPE, Integer.toString(res.getType())); |
| } |
| } |