org.eclipse.ui.editors/src/org/eclipse/ui/internal/editors/text/RemoveTrailingWhitespaceHandler.java

/*******************************************************************************
 * Copyright (c) 2000, 2004 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.internal.editors.text;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;

import org.eclipse.core.filebuffers.FileBuffers;
import org.eclipse.core.filebuffers.ITextFileBufferManager;
import org.eclipse.core.filebuffers.manipulation.RemoveTrailingWhitespaceOperation;

import org.eclipse.jface.window.Window;

import org.eclipse.ui.editors.text.FileBufferOperationHandler;


/**
 * Not yet for public use. API under construction.
 * 
 * @since 3.1
 */
public class RemoveTrailingWhitespaceHandler extends FileBufferOperationHandler {
		
	public RemoveTrailingWhitespaceHandler() {
		super(new RemoveTrailingWhitespaceOperation());
	}
		
	/*
	 * @see org.eclipse.ui.editors.text.FileBufferOperationHandler#isAcceptableLocation(org.eclipse.core.runtime.IPath)
	 */
	protected boolean isAcceptableLocation(IPath location) {
		ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager();
		return manager.isTextFileLocation(location);
	}
	
	/*
	 * @see org.eclipse.ui.editors.text.FileBufferOperationHandler#collectFiles(org.eclipse.core.resources.IResource[])
	 */
	protected IFile[] collectFiles(IResource[] resources) {
		
		IFile[] files= super.collectFiles(resources);
		if (files != null && resources != null && files.length == resources.length)
			return files;
		
		SelectResourcesDialog dialog= new SelectResourcesDialog(getShell(), TextEditorMessages.getString("RemoveTrailingWhitespaceHandler.dialog.title"), TextEditorMessages.getString("RemoveTrailingWhitespaceHandler.dialog.description")); //$NON-NLS-1$ //$NON-NLS-2$
		dialog.setInput(resources);
		int result= dialog.open();
		if (Window.OK == result) {
			IResource[] selectedResources= dialog.getSelectedResources();
			return super.collectFiles(selectedResources);
		}
		return null;
	}	
}