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.enhance; 016 017import org.apache.hivemind.Location; 018import org.apache.tapestry.IBinding; 019import org.apache.tapestry.IComponent; 020import org.apache.tapestry.binding.BindingConstants; 021import org.apache.tapestry.binding.BindingSource; 022 023/** 024 * Encapsulates information needed to construct an initial value binding for a specified property 025 * (with an initial value). 026 * 027 * @author Howard M. Lewis Ship 028 * @since 4.0 029 */ 030public class InitialValueBindingCreator 031{ 032 private BindingSource _bindingSource; 033 034 private String _description; 035 036 private String _initialValue; 037 038 private Location _location; 039 040 /** 041 * This method is just implemented for testing purposes. 042 */ 043 044 public boolean equals(Object obj) 045 { 046 InitialValueBindingCreator c = (InitialValueBindingCreator) obj; 047 048 return _bindingSource == c._bindingSource && _description.equals(c._description) 049 && _initialValue.equals(c._initialValue) && _location.equals(c._location); 050 } 051 052 public InitialValueBindingCreator(BindingSource bindingSource, String description, 053 String initialValue, Location location) 054 { 055 _bindingSource = bindingSource; 056 _description = description; 057 _initialValue = initialValue; 058 _location = location; 059 } 060 061 public IBinding createBinding(IComponent component) 062 { 063 return _bindingSource.createBinding(component, _description, _initialValue, BindingConstants.OGNL_PREFIX, _location); 064 } 065}