001// Copyright 2007, 2008, 2012 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.validator;
016
017import org.apache.tapestry5.Field;
018import org.apache.tapestry5.MarkupWriter;
019import org.apache.tapestry5.ValidationException;
020import org.apache.tapestry5.commons.MessageFormatter;
021import org.apache.tapestry5.services.FormSupport;
022import org.apache.tapestry5.services.Html5Support;
023import org.apache.tapestry5.services.javascript.DataConstants;
024import org.apache.tapestry5.services.javascript.JavaScriptSupport;
025
026/**
027 * Enforces a maximum integer value.
028 */
029public class Max extends AbstractValidator<Long, Number>
030{
031    
032    final private Html5Support html5Support;
033    
034    public Max(JavaScriptSupport javaScriptSupport, Html5Support html5Support)
035    {
036        super(Long.class, Number.class, "max-integer", javaScriptSupport);
037        this.html5Support = html5Support;
038    }
039
040    public void validate(Field field, Long constraintValue, MessageFormatter formatter, Number value)
041            throws ValidationException
042    {
043        if (value.longValue() > constraintValue)
044            throw new ValidationException(buildMessage(formatter, field, constraintValue));
045    }
046
047    private String buildMessage(MessageFormatter formatter, Field field, Long constraintValue)
048    {
049        return formatter.format(constraintValue, field.getLabel());
050    }
051
052    public void render(Field field, Long constraintValue, MessageFormatter formatter, MarkupWriter writer,
053                       FormSupport formSupport)
054    {
055        if (formSupport.isClientValidationEnabled())
056        {
057            javaScriptSupport.require("t5/core/validation");
058
059            writer.attributes(DataConstants.VALIDATION_ATTRIBUTE, true,
060                    "data-validate-max", constraintValue.toString(),
061                    "data-max-message", buildMessage(formatter, field, constraintValue));
062        }
063        if (html5Support.isHtml5SupportEnabled())
064        {
065            writer.getElement().forceAttributes("type", "number", "max", String.valueOf(constraintValue));
066        }
067    }
068
069}