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.ioc.MessageFormatter; 021import org.apache.tapestry5.services.FormSupport; 022import org.apache.tapestry5.services.javascript.DataConstants; 023import org.apache.tapestry5.services.javascript.JavaScriptSupport; 024 025/* A vaidator that enforces that a number is greater than some minimum integer value. */ 026public class Min extends AbstractValidator<Long, Number> 027{ 028 public Min(JavaScriptSupport javaScriptSupport) 029 { 030 super(Long.class, Number.class, "min-integer", javaScriptSupport); 031 } 032 033 public void validate(Field field, Long constraintValue, MessageFormatter formatter, Number value) 034 throws ValidationException 035 { 036 if (value.longValue() < constraintValue) 037 throw new ValidationException(buildMessage(formatter, field, constraintValue)); 038 } 039 040 private String buildMessage(MessageFormatter formatter, Field field, Long constraintValue) 041 { 042 return formatter.format(constraintValue, field.getLabel()); 043 } 044 045 public void render(Field field, Long constraintValue, MessageFormatter formatter, MarkupWriter writer, 046 FormSupport formSupport) 047 { 048 if (formSupport.isClientValidationEnabled()) 049 { 050 javaScriptSupport.require("t5/core/validation"); 051 writer.attributes(DataConstants.VALIDATION_ATTRIBUTE, true, 052 "data-validate-min", constraintValue.toString(), 053 "data-min-message", buildMessage(formatter, field, constraintValue)); 054 } 055 } 056}