MethodNameListener.java

/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the CPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the CPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/

package org.rubypeople.rdt.refactoring.ui.pages.extractmethod;

import java.util.Observable;

import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.widgets.Text;
import org.rubypeople.rdt.refactoring.core.extractmethod.MethodExtractor;
import org.rubypeople.rdt.refactoring.util.NameValidator;

public class MethodNameListener extends Observable implements ModifyListener {

	private final MethodExtractor extractor;

	private final IValidationController validationController;

	public MethodNameListener(MethodExtractor extractor, IValidationController validationController) {
		this.extractor = extractor;
		this.validationController = validationController;
	}

	public void modifyText(ModifyEvent e) {
		String name = ((Text) e.widget).getText();
		extractor.getExtractedMethod().setMethodName(name);
		checkInput(name);
		setChanged();
		notifyObservers(name);
	}

	private void checkInput(String name) {
		if (NameValidator.isValidMethodName(name)) {
			validationController.setError(null);
			validationController.setComplete(this, true);
		} else {
			validationController.setError('\'' + name + Messages.MethodNameListener_IsNotValidName);
			validationController.setComplete(this, false);
		}
	}

}