001package votorola.g.web.wic; // Copyright 2008-2009, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE. 002 003import org.apache.wicket.request.cycle.RequestCycle; 004import org.apache.wicket.markup.html.form.FormComponent; 005import org.apache.wicket.validation.*; 006import votorola.g.locale.BundleFormatter; 007import votorola.g.lang.*; 008 009 010/** A validator that limits character sequences to a maximum length. For use only with 011 * models that hold character sequences. (Otherwise, the associated IConverter should 012 * eagerly enforce its own constraints, at conversion time.) 013 */ 014public @ThreadRestricted("wicket") final class MaxLengthValidator implements IValidator<CharSequence> 015{ 016 017 018 /** Constructs a MaxLengthValidator. 019 * 020 * @see #maxLength() 021 */ 022 public MaxLengthValidator( int _maxLength ) { maxLength = _maxLength; } 023 024 025 026 // ------------------------------------------------------------------------------------ 027 028 029 /** The maximum length. 030 */ 031 public int maxLength() { return maxLength; } 032 033 034 private final int maxLength; 035 036 037 038 // - I - V a l i d a t o r ------------------------------------------------------------ 039 040 041 /** @throws ClassCastException if the value is not a CharSequence 042 */ 043 public void validate( final IValidatable<CharSequence> v ) throws ClassCastException 044 { 045 final CharSequence value = v.getValue(); // not null, inless INullAcceptingValidator 046 final int length = value.length(); 047 if( length > maxLength ) 048 { 049 v.error( new ValidationError1( ((BundleFormatter.GProvider)RequestCycle.get()).bunG().l( 050 "g.inputTooLong", value.subSequence(0,16) + "...", length, maxLength ))); 051 } 052 } 053 054 055 056}