001// Copyright 2005 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.tapestry.form.validator; 016 017import org.apache.tapestry.IMarkupWriter; 018import org.apache.tapestry.IRequestCycle; 019import org.apache.tapestry.form.FormComponentContributorContext; 020import org.apache.tapestry.form.IFormComponent; 021import org.apache.tapestry.form.ValidationMessages; 022import org.apache.tapestry.valid.ValidatorException; 023 024/** 025 * Abstract implementation of {@link org.apache.tapestry.form.validator.Validator} that delegates to 026 * some other object. 027 * 028 * @author Howard Lewis Ship 029 * @since 4.0 030 */ 031public abstract class AbstractValidatorWrapper implements Validator 032{ 033 protected abstract Validator getDelegate(); 034 035 public void validate(IFormComponent field, ValidationMessages messages, Object object) 036 throws ValidatorException 037 { 038 getDelegate().validate(field, messages, object); 039 } 040 041 public boolean getAcceptsNull() 042 { 043 return getDelegate().getAcceptsNull(); 044 } 045 046 public boolean isRequired() 047 { 048 return getDelegate().isRequired(); 049 } 050 051 public void renderContribution(IMarkupWriter writer, IRequestCycle cycle, 052 FormComponentContributorContext context, IFormComponent field) 053 { 054 getDelegate().renderContribution(writer, cycle, context, field); 055 } 056 057}