001// Copyright 2010-2013 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 org.apache.tapestry5.func.F; 018import org.apache.tapestry5.ioc.util.AvailableValues; 019import org.apache.tapestry5.ioc.util.UnknownValueException; 020import org.apache.tapestry5.services.javascript.JavaScriptStack; 021import org.apache.tapestry5.services.javascript.JavaScriptStackSource; 022 023import java.util.List; 024import java.util.Map; 025 026public class JavaScriptStackSourceImpl implements JavaScriptStackSource 027{ 028 private final Map<String, JavaScriptStack> configuration; 029 030 public JavaScriptStackSourceImpl(Map<String, JavaScriptStack> configuration) 031 { 032 this.configuration = configuration; 033 } 034 035 public JavaScriptStack getStack(String name) 036 { 037 JavaScriptStack stack = findStack(name); 038 039 if (stack == null) 040 { 041 throw new UnknownValueException(String.format("No JavaScriptStack with name '%s'.", name), 042 new AvailableValues("Configured JavaScript stacks", configuration)); 043 } 044 045 return stack; 046 } 047 048 public JavaScriptStack findStack(String name) 049 { 050 return configuration.get(name); 051 } 052 053 public List<String> getStackNames() 054 { 055 return F.flow(configuration.keySet()).sort().toList(); 056 } 057}