001// Copyright 2010 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.services.javascript; 016 017import java.util.List; 018 019import org.apache.tapestry5.Asset; 020import org.apache.tapestry5.SymbolConstants; 021import org.apache.tapestry5.func.F; 022import org.apache.tapestry5.func.Mapper; 023import org.apache.tapestry5.internal.services.RequestConstants; 024import org.apache.tapestry5.ioc.annotations.Symbol; 025import org.apache.tapestry5.ioc.internal.util.CollectionFactory; 026import org.apache.tapestry5.ioc.services.ThreadLocale; 027import org.apache.tapestry5.services.assets.AssetPathConstructor; 028import org.apache.tapestry5.services.javascript.JavaScriptStack; 029import org.apache.tapestry5.services.javascript.JavaScriptStackSource; 030 031public class JavaScriptStackPathConstructorImpl implements JavaScriptStackPathConstructor 032{ 033 private final ThreadLocale threadLocale; 034 035 private final AssetPathConstructor assetPathConstructor; 036 037 private final JavaScriptStackSource javascriptStackSource; 038 039 private final boolean combineScripts; 040 041 private final Mapper<Asset, String> toPath = new Mapper<Asset, String>() 042 { 043 public String map(Asset input) 044 { 045 return input.toClientURL(); 046 } 047 }; 048 049 public JavaScriptStackPathConstructorImpl(ThreadLocale threadLocale, AssetPathConstructor assetPathConstructor, 050 JavaScriptStackSource javascriptStackSource, 051 052 @Symbol(SymbolConstants.COMBINE_SCRIPTS) 053 boolean combineScripts) 054 { 055 this.threadLocale = threadLocale; 056 this.assetPathConstructor = assetPathConstructor; 057 this.javascriptStackSource = javascriptStackSource; 058 this.combineScripts = combineScripts; 059 } 060 061 public List<String> constructPathsForJavaScriptStack(String stackName) 062 { 063 JavaScriptStack stack = javascriptStackSource.getStack(stackName); 064 065 List<Asset> assets = stack.getJavaScriptLibraries(); 066 067 if (assets.size() > 1 && combineScripts) 068 return combinedStackURL(stackName); 069 070 return toPaths(assets); 071 } 072 073 private List<String> toPaths(List<Asset> assets) 074 { 075 assert assets != null; 076 return F.flow(assets).map(toPath).toList(); 077 } 078 079 private List<String> combinedStackURL(String stackName) 080 { 081 String path = String.format("%s/%s.js", threadLocale.getLocale().toString(), stackName); 082 083 String stackURL = assetPathConstructor.constructAssetPath(RequestConstants.STACK_FOLDER, path); 084 085 return CollectionFactory.newList(stackURL); 086 } 087 088}