| /******************************************************************************* |
| * Copyright (c) 2003, 2006 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.ant.internal.ui.preferences; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.ant.internal.ui.AntUIPlugin; |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| import org.eclipse.swt.custom.BusyIndicator; |
| |
| public class FileFilter extends ViewerFilter { |
| |
| /** |
| * Objects to filter |
| */ |
| private List fFilter; |
| |
| /** |
| * Collection of files and containers to display |
| */ |
| private Set fFiles; |
| |
| private String fExtension; |
| |
| private boolean fConsiderExtension= true; |
| |
| /** |
| * Creates a new filter that filters the given |
| * objects. |
| * Note: considerExtension must be called to initialize the filter |
| */ |
| public FileFilter(List objects, String extension) { |
| fFilter = objects; |
| fExtension= extension; |
| } |
| |
| /* (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) { |
| return fFiles.contains(element) && !fFilter.contains(element); |
| } |
| |
| /** |
| * Search for all the matching files in the workspace. |
| */ |
| private void init() { |
| BusyIndicator.showWhile(AntUIPlugin.getStandardDisplay(), new Runnable() { |
| public void run() { |
| fFiles = new HashSet(); |
| traverse(ResourcesPlugin.getWorkspace().getRoot(), fFiles); |
| } |
| }); |
| } |
| |
| /** |
| * Traverse the given container, adding files to the given set. |
| * Returns whether any files were added |
| */ |
| private boolean traverse(IContainer container, Set set) { |
| boolean added = false; |
| try { |
| IResource[] resources = container.members(); |
| for (int i = 0; i < resources.length; i++) { |
| IResource resource = resources[i]; |
| if (resource instanceof IFile) { |
| IFile file = (IFile) resource; |
| String ext = file.getFileExtension(); |
| if (!fConsiderExtension || (ext != null && ext.equalsIgnoreCase(fExtension))) { |
| set.add(file); |
| added = true; |
| } |
| } else if (resource instanceof IContainer) { |
| if (traverse((IContainer) resource, set)) { |
| set.add(resource); |
| added = true; |
| } |
| } |
| } |
| } catch (CoreException e) { |
| } |
| return added; |
| } |
| |
| /** |
| * Sets whether this filter will filter based on extension. |
| * @param considerExtension whether to consider a file's extension when filtering |
| */ |
| public void considerExtension(boolean considerExtension) { |
| fConsiderExtension= considerExtension; |
| init(); |
| } |
| } |