    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
    015    package org.apache.tapestry5.services.javascript;
    016
    017    import org.apache.tapestry5.ioc.services.SymbolSource;
    018    import 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     */
    027    public 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    }