/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.guvnor.client.util;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.user.client.ui.TextBox;
/**
*
* @author rikkola
*
*/
public class NumbericFilterKeyPressHandler
implements
KeyPressHandler {
private final TextBox box;
public NumbericFilterKeyPressHandler(TextBox box) {
this.box = box;
}
public void onKeyPress(KeyPressEvent event) {
char c = event.getCharCode();
TextBox w = (TextBox) event.getSource();
if ( Character.isLetter( c ) && c != '=' && !(box.getText().startsWith( "=" )) ) {
((TextBox) w).cancelKey();
}
}
}