| /* |
| * Copyright 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package com.google.gwt.dev.shell; |
| |
| import com.google.gwt.core.ext.TreeLogger; |
| |
| /** |
| * Holds the expected version number for the hosted.html file and a check |
| * for it. |
| */ |
| public class HostedHtmlVersion { |
| /** |
| * The version number that should be passed into gwtOnLoad. Must match the |
| * version in hosted.html. |
| */ |
| public static final String EXPECTED_GWT_ONLOAD_VERSION = "2.1"; |
| |
| /** |
| * Validate that the supplied hosted.html version matches. |
| * |
| * This is to detect cases where users upgrade to a new version but forget to |
| * update the generated hosted.html file. |
| * |
| * @param logger to report errors on |
| * @param version version supplied by hosted.html file |
| * @return true if the version is valid, false otherwise |
| */ |
| public static boolean validHostedHtmlVersion(TreeLogger logger, |
| String version) { |
| if (!EXPECTED_GWT_ONLOAD_VERSION.equals(version)) { |
| logger.log(TreeLogger.ERROR, |
| "Invalid version number \"" + version |
| + "\" passed to external.gwtOnLoad(), expected \"" |
| + EXPECTED_GWT_ONLOAD_VERSION |
| + "\"; your development mode bootstrap file may be out of date; " |
| + "if you are using -noserver try recompiling and redeploying " |
| + "your app; if you just switched to a different version of " |
| + "GWT, try clearing your browser cache"); |
| return false; |
| } |
| return true; |
| } |
| |
| // prevent instantiation |
| private HostedHtmlVersion() { |
| } |
| } |