001// Copyright 2011 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.services.javascript;
016
017import org.apache.tapestry5.ioc.services.SymbolSource;
018import org.apache.tapestry5.services.AssetSource;
019
020/**
021 * Defines the types of extensions to a JavaScript stack that can be contributed to an extensible JavaScript stack.
022 * 
023 * @since 5.3
024 * @see StackExtension
025 * @see ExtensibleJavaScriptStack
026 */
027public enum StackExtensionType
028{
029    /**
030     * A JavaScript library. The extension value will be converted using {@link AssetSource#getExpandedAsset(String)},
031     * meaning that {@linkplain SymbolSource symbols} will be expanded.
032     */
033    LIBRARY,
034
035    /**
036     * A stylesheet. The extension value will be converted using {@link AssetSource#getExpandedAsset(String)},
037     * meaning that {@linkplain SymbolSource symbols} will be expanded.
038     */
039    STYLESHEET,
040
041    /** Extra JavaScript initialization (rarely used). No symbol expansion takes place. */
042    INITIALIZATION;
043}