/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.communications.util.prefs;
import java.io.PrintWriter;
import java.util.prefs.Preferences;
import org.rhq.enterprise.communications.i18n.CommI18NFactory;
import org.rhq.enterprise.communications.i18n.CommI18NResourceKeys;
/**
* A setup validity checker that validates that the new value is a valid integer within an optionally specified range.
*
* @author John Mazzitelli
*/
public class IntegerSetupValidityChecker implements SetupValidityChecker {
private Integer m_min;
private Integer m_max;
/**
* Defines the checker that validates the new value as an integer that is between <code>min_value_allowed</code> and
* <code>max_value_allowed</code> inclusive. If either the min or max is <code>null</code>, it will not be checked
* (that is to say, you can have the value limited only on a floor or ceiling value, or you can limit it for both).
*
* @param min_value_allowed if not <code>null</code>, the minimum value the value is allowed to be
* @param max_value_allowed if not <code>null</code>, the maximum value the value is allowed to be
*/
public IntegerSetupValidityChecker(Integer min_value_allowed, Integer max_value_allowed) {
m_min = min_value_allowed;
m_max = max_value_allowed;
}
/**
* Checks to make sure the <code>value_to_check</code> is a valid integer within the defined range.
*
* @see SetupValidityChecker#checkValidity(String, String, java.util.prefs.Preferences, PrintWriter)
*/
public boolean checkValidity(String pref_name, String value_to_check, Preferences preferences, PrintWriter out) {
try {
int new_int = Integer.parseInt(value_to_check);
if (m_min != null) {
if (new_int < m_min.intValue()) {
out.println(CommI18NFactory.getMsg().getMsg(CommI18NResourceKeys.SETUP_NUMBER_TOO_LOW,
value_to_check, m_min));
return false;
}
}
if (m_max != null) {
if (new_int > m_max.intValue()) {
out.println(CommI18NFactory.getMsg().getMsg(CommI18NResourceKeys.SETUP_NUMBER_TOO_HIGH,
value_to_check, m_max));
return false;
}
}
} catch (NumberFormatException e) {
out.println(CommI18NFactory.getMsg().getMsg(CommI18NResourceKeys.SETUP_NOT_AN_INTEGER, value_to_check));
return false;
}
return true;
}
}