| /* |
| * Copyright 2011 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.core.client.impl; |
| |
| import com.google.gwt.core.client.GWT; |
| |
| /** |
| * Helper class to query if SourceMaps are enabled and capable of working on the current user |
| * agent. |
| */ |
| public class SourceMapProperty { |
| |
| static class SourceMapEnabled extends SourceMapImpl { |
| |
| public native boolean doesBrowserSupportSourceMaps() /*-{ |
| // Chrome only for now, future Firefoxes have promised support |
| return navigator.userAgent.indexOf('Chrome') > -1; |
| }-*/; |
| |
| public boolean isSourceMapGenerationOn() { |
| return true; |
| } |
| } |
| |
| static class SourceMapEmulated extends SourceMapEnabled { |
| |
| public boolean shouldUseSourceMaps() { |
| // pretend emulated stack is a sourcemap |
| return true; |
| } |
| } |
| |
| /** |
| * Interface to provide both the compile time and runtime <code>user.agent</code> selection |
| * property value. |
| */ |
| static class SourceMapImpl { |
| |
| public boolean doesBrowserSupportSourceMaps() { |
| return false; |
| } |
| |
| public boolean isSourceMapGenerationOn() { |
| return false; |
| } |
| |
| public boolean shouldUseSourceMaps() { |
| return isSourceMapGenerationOn() && doesBrowserSupportSourceMaps(); |
| } |
| } |
| |
| private static final SourceMapImpl IMPL = GWT.create(SourceMapImpl.class); |
| |
| public static boolean doesBrowserSupportSourceMaps() { |
| return IMPL.doesBrowserSupportSourceMaps(); |
| } |
| |
| /** |
| * True if fully accurate stack traces are possible. True for DevMode, emulated stack traces, and |
| * cases where sourceMaps can work with detailed browser stack trace support. |
| */ |
| public static boolean isDetailedDeobfuscatedStackTraceSupported() { |
| return !GWT.isScript() || shouldUseSourceMaps(); |
| } |
| |
| public static boolean isSourceMapGenerationOn() { |
| return IMPL.isSourceMapGenerationOn(); |
| } |
| |
| public static boolean shouldUseSourceMaps() { |
| return IMPL.shouldUseSourceMaps(); |
| } |
| } |