com.google.gwt.libideas.validation.client.validator.USPhoneValidator.java Source code

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Here is the source code for com.google.gwt.libideas.validation.client.validator.USPhoneValidator.java

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/*
 * Copyright 2006 Google 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 com.google.gwt.libideas.validation.client.validator;

import com.google.gwt.libideas.validation.client.ErrorHandler;
import com.google.gwt.libideas.validation.client.Subject;

/**
 * United States Phone validator. Modifies the output if its "close enough";
 */
public class USPhoneValidator extends RegExValidator {
    static char[] PHONE_FILLERS = { '(', ')', '-', ' ' };
    static char[] NUMBERS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0' };

    private static boolean inArray(char a, char[] array) {
        for (int i = 0; i < array.length; i++) {
            if (a == array[i]) {
                return true;
            }
        }
        return false;
    }

    public USPhoneValidator() {
        super("[(][0-9]{3}[)] [0-9]{3}-[0-9]{4}");
    }

    public void checkValid(Subject subject, ErrorHandler handler) {
        String s = subject.getValue().toString();
        if (!s.matches(regEx)) {
            if (!graunchable(s, subject)) {
                handler.reportError(subject, createErrorMessage(subject.getLabel(), s));
            }
        }
    }

    public String createErrorMessage(String fieldName, String answer) {
        return getMessages().phone(fieldName, answer);
    }

    /**
     * See if the phone number can be graunched into shape.
     */
    private boolean graunchable(String s, Subject subject) {
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < s.length(); i++) {
            char cur = s.charAt(i);
            if (i == 0 && cur == '1') {
                continue;
            } else if (inArray(cur, PHONE_FILLERS)) {
                continue;
            } else if (inArray(cur, NUMBERS)) {
                buf.append(cur);
            } else {
                return false;
            }
        }
        if (buf.length() != 10) {
            return false;
        } else {
            buf.insert(0, "(");
            buf.insert(4, ") ");
            buf.insert(9, "-");
            subject.setValue(buf.toString());
            return true;
        }
    }
}