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.asset; 016 017import java.util.Locale; 018 019import org.apache.hivemind.ApplicationRuntimeException; 020import org.apache.hivemind.ClassResolver; 021import org.apache.hivemind.Location; 022import org.apache.hivemind.Resource; 023import org.apache.hivemind.util.ClasspathResource; 024import org.apache.tapestry.IAsset; 025import org.apache.tapestry.engine.IEngineService; 026import org.apache.tapestry.l10n.ResourceLocalizer; 027 028/** 029 * Creates instances of {@link org.apache.tapestry.asset.PrivateAsset}, which are the holders of 030 * classpath: resources. 031 * 032 * @author Howard M. Lewis Ship 033 * @since 4.0 034 */ 035public class ClasspathAssetFactory implements AssetFactory 036{ 037 private ClassResolver _classResolver; 038 039 private IEngineService _assetService; 040 041 private ResourceLocalizer _localizer; 042 043 public IAsset createAsset(Resource baseResource, String path, Locale locale, Location location) 044 { 045 Resource asset = baseResource.getRelativeResource(path); 046 Resource localized = _localizer.findLocalization(asset, locale); 047 048 if (localized == null) 049 throw new ApplicationRuntimeException(AssetMessages.missingAsset(path, baseResource), 050 location, null); 051 052 return createAsset(localized, location); 053 } 054 055 public IAsset createAbsoluteAsset(String path, Locale locale, Location location) 056 { 057 Resource base = new ClasspathResource(_classResolver, path); 058 Resource localized = _localizer.findLocalization(base, locale); 059 060 if (localized == null) 061 throw new ApplicationRuntimeException(AssetMessages.missingClasspathResource(path), 062 location, null); 063 064 return createAsset(localized, location); 065 } 066 067 public IAsset createAsset(Resource resource, Location location) 068 { 069 ClasspathResource cr = (ClasspathResource) resource; 070 071 return new PrivateAsset(cr, _assetService, location); 072 } 073 074 public void setAssetService(IEngineService assetService) 075 { 076 _assetService = assetService; 077 } 078 079 public void setClassResolver(ClassResolver classResolver) 080 { 081 _classResolver = classResolver; 082 } 083 084 public void setLocalizer(ResourceLocalizer localizer) 085 { 086 _localizer = localizer; 087 } 088}