| /******************************************************************************* |
| * Copyright (c) 2007 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.pde.internal.ui.util; |
| |
| import java.util.HashSet; |
| import java.util.Locale; |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| |
| /** |
| * FileExtensionsFilter |
| * |
| */ |
| public class FileExtensionsFilter extends ViewerFilter { |
| |
| private HashSet fExtensions; |
| |
| /** |
| * |
| */ |
| public FileExtensionsFilter() { |
| fExtensions = new HashSet(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| public boolean select(Viewer viewer, Object parentElement, Object element) { |
| // Select based on type |
| if (element instanceof IFile) { |
| // Files (IFile) |
| return processFile((IFile) element); |
| } else if (element instanceof IContainer) { |
| // Projects (IProject), Folders (IFolder) |
| return processContainer((IContainer) element, viewer, parentElement); |
| } |
| return false; |
| } |
| |
| /** |
| * @param element |
| * @return |
| */ |
| private boolean processContainer(IContainer container, Viewer viewer, Object parentElement) { |
| // Skip closed projects |
| if ((container instanceof IProject) && (((IProject) container).isOpen() == false)) { |
| return false; |
| } |
| // Process the container's members |
| try { |
| IResource[] resources = container.members(); |
| for (int i = 0; i < resources.length; i++) { |
| if (select(viewer, parentElement, resources[i])) { |
| return true; |
| } |
| } |
| } catch (CoreException e) { |
| // Ignore |
| } |
| return false; |
| } |
| |
| /** |
| * @param element |
| */ |
| private boolean processFile(IFile file) { |
| // Get the file's name (including extension) |
| String fileName = file.getName().toLowerCase(Locale.ENGLISH); |
| // Get the index of the last '.' |
| int lastDotIndex = fileName.lastIndexOf('.'); |
| int lastIndex = fileName.length() - 1; |
| // Validate index |
| if (lastDotIndex < 0) { |
| return false; |
| } else if (lastDotIndex >= lastIndex) { |
| return false; |
| } |
| // Get the file's extension (remove dot) |
| String extension = fileName.substring(lastDotIndex + 1); |
| // Check to see if the extension should be filtered |
| return fExtensions.contains(extension); |
| } |
| |
| /** |
| * @param extension |
| */ |
| public void addFileExtension(String extension) { |
| fExtensions.add(extension); |
| } |
| |
| } |