/*******************************************************************************
* Copyright (c) 2010 Neil Bartlett.
* 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:
* Neil Bartlett - initial API and implementation
*******************************************************************************/
package bndtools.utils;
import java.util.Locale;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
public class FileExtensionFilter extends ViewerFilter {
private final String[] extensions;
private final boolean caseInsensitive;
/**
* Construct a filter from a list of supported extensions.
*/
public FileExtensionFilter(String[] extensions, boolean caseInsensitive) {
this.caseInsensitive = caseInsensitive;
this.extensions = new String[extensions.length];
for (int i = 0; i < extensions.length; i++) {
if (extensions[i].length() > 0 && extensions[i].charAt(0) == '.')
this.extensions[i] = extensions[i];
else
this.extensions[i] = "." + extensions[i];
if (caseInsensitive)
this.extensions[i] = this.extensions[i].toLowerCase();
}
}
/**
* Construct a filter from a single supported extension.
*/
public FileExtensionFilter(String extension, boolean caseInsensitive) {
this(new String[] {
extension
}, caseInsensitive);
}
/**
* Construct a case-insensitive filter from a list of supported extensions.
*
* @param extensions
*/
public FileExtensionFilter(String[] extensions) {
this(extensions, true);
}
/**
* Construct a case-insensitive filter from a single supported extension.
*
* @param extension
*/
public FileExtensionFilter(String extension) {
this(extension, true);
}
@Override
public boolean select(Viewer viewer, Object parent, Object element) {
if (element instanceof IFile) {
String fileName = ((IFile) element).getName();
if (caseInsensitive)
fileName = fileName.toLowerCase(Locale.ENGLISH);
for (String extension : this.extensions) {
if (fileName.endsWith(extension))
return true;
}
return false;
}
if (element instanceof IProject && !((IProject) element).isOpen())
return false;
if (element instanceof IContainer) {
try {
IResource[] resources = ((IContainer) element).members();
for (int i = 0; i < resources.length; i++) {
if (select(viewer, parent, resources[i]))
return true;
}
} catch (CoreException e) {}
}
return false;
}
}