/******************************************************************************* * 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.ganoro.phing.ui.internal.preferences; import java.util.HashSet; import java.util.List; import java.util.Set; 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; import org.ganoro.phing.ui.PhingUi; 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(PhingUi.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(); } }