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.services.javascript; 016 017/** 018 * Sets the priority for JavaScript initialization scripting. InitializationPriority allows coarse-grained control 019 * over the order in which initialization occurs on the client. The default is normally {@link #NORMAL}. Starting in 5.4, 020 * these values have less meaning, as the {@linkplain JavaScriptSupport#require(String) dynamic loading of modules} may 021 * have unexpected effects on the exact order in which initialization occurs as some initializations may be deferred until 022 * a referenced module, or a dependency of a referenced module, has been loaded. 023 * 024 * @since 5.2.0 025 */ 026public enum InitializationPriority 027{ 028 /** 029 * Provided JavaScript will be executed immediately (it is not deferred until the page loads). Execution occur via 030 * JavaScript's {@code eval}, and occurs once all {@linkplain JavaScriptSupport#importJavaScriptLibrary(org.apache.tapestry5.Asset) JavaScript libraries} 031 * (but not modules) for the page have been loaded. 032 * <p/> 033 * 034 * @deprecated Deprecated in 5.4; this is now treated as "earlier than {@linkplain #EARLY early}". 035 */ 036 IMMEDIATE, 037 038 /** 039 * All early execution occurs before {@link #NORMAL}. 040 */ 041 EARLY, 042 043 /** 044 * This is the typical priority. 045 */ 046 NORMAL, 047 048 /** 049 * Execution occurs after {@link #NORMAL}. 050 */ 051 LATE 052}