| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.wizards.datatransfer; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.jface.operation.ModalContext; |
| import org.eclipse.ui.dialogs.FileSystemElement; |
| |
| /** |
| * The PopulateFilesOperation is an operation used to populate a FileSystemElement one |
| * level deep rather than the whole way. |
| */ |
| public class PopulateRootOperation extends SelectFilesOperation { |
| /** |
| * Create a new <code>PopulateFilesOperation</code>. |
| * @param rootObject the object to be populated |
| * @param structureProvider the object that defines how we are to populate it. |
| */ |
| public PopulateRootOperation(Object rootObject, |
| IImportStructureProvider structureProvider) { |
| super(rootObject, structureProvider); |
| } |
| |
| /** |
| * Creates and returns a <code>FileSystemElement</code> if the specified |
| * file system object merits one. The criteria for this are: |
| * - if the file system object is a container then it must have either a |
| * child container or an associated file |
| * - if the file system object is a file then it must have an extension |
| * suitable for selection |
| */ |
| protected FileSystemElement createElement(FileSystemElement parent, |
| Object fileSystemObject) throws InterruptedException { |
| |
| //Iterate on level deep |
| return createElement(parent, fileSystemObject, 2); |
| |
| } |
| |
| /** |
| * Creates and returns a <code>FileSystemElement</code> if the specified |
| * file system object merits one. The criteria for this are: |
| * - if the file system object is a container then it must have either a |
| * child container or an associated file |
| * - if the file system object is a file then it must have an extension |
| * suitable for selection |
| * recurse down for depth to populate children |
| */ |
| protected FileSystemElement createElement(FileSystemElement parent, |
| Object fileSystemObject, int depth) throws InterruptedException { |
| ModalContext.checkCanceled(monitor); |
| boolean isContainer = provider.isFolder(fileSystemObject); |
| String elementLabel = parent == null ? provider |
| .getFullPath(fileSystemObject) : provider |
| .getLabel(fileSystemObject); |
| |
| MinimizedFileSystemElement result = new MinimizedFileSystemElement( |
| elementLabel, parent, isContainer); |
| result.setFileSystemObject(fileSystemObject); |
| |
| if (isContainer) { |
| if (depth > 0) { |
| List children = provider.getChildren(fileSystemObject); |
| if (children == null) |
| children = new ArrayList(1); |
| Iterator childrenEnum = children.iterator(); |
| while (childrenEnum.hasNext()) { |
| createElement(result, childrenEnum.next(), depth - 1); |
| } |
| result.setPopulated(); |
| } |
| |
| } |
| |
| return result; |
| } |
| } |