001// Copyright 2007, 2008, 2009 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.internal.bindings; 016 017import org.apache.tapestry5.Asset; 018import org.apache.tapestry5.Binding; 019import org.apache.tapestry5.ComponentResources; 020import org.apache.tapestry5.ioc.Location; 021import org.apache.tapestry5.services.AssetSource; 022import org.apache.tapestry5.services.BindingFactory; 023 024/** 025 * Binding factory where the expression is a reference to an asset. 026 * 027 * @see org.apache.tapestry5.services.AssetSource 028 * @see org.apache.tapestry5.internal.bindings.ContextBindingFactory 029 */ 030public class AssetBindingFactory implements BindingFactory 031{ 032 private final AssetSource source; 033 034 public AssetBindingFactory(AssetSource source) 035 { 036 this.source = source; 037 } 038 039 public Binding newBinding(String description, ComponentResources container, ComponentResources component, 040 String expression, Location location) 041 { 042 // There's some possibility this isn't quite right when it appears in a base class and a 043 // sub-class gets instantiated, because relative path for the asset should be relative to the 044 // base class, but will instead by relative to the subclass. 045 046 Asset asset = source.getComponentAsset(container, expression); 047 048 return new AssetBinding(location, description, asset); 049 } 050}