mirror of
https://github.com/schibo/1964js.git
synced 2025-04-02 10:52:54 -04:00
3823 lines
No EOL
121 KiB
JavaScript
3823 lines
No EOL
121 KiB
JavaScript
// Copyright 2006 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview Bootstrap for the Google JS Library (Closure).
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*
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* In uncompiled mode base.js will attempt to load Closure's deps file, unless
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* the global <code>CLOSURE_NO_DEPS</code> is set to true. This allows projects
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* to include their own deps file(s) from different locations.
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*
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* Avoid including base.js more than once. This is strictly discouraged and not
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* supported. goog.require(...) won't work properly in that case.
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*
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* @provideGoog
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*/
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/**
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* @define {boolean} Overridden to true by the compiler.
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*/
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var COMPILED = false;
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/**
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* Base namespace for the Closure library. Checks to see goog is already
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* defined in the current scope before assigning to prevent clobbering if
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* base.js is loaded more than once.
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*
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* @const
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*/
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var goog = goog || {};
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/**
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* Reference to the global context. In most cases this will be 'window'.
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* @const
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* @suppress {newCheckTypes}
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*/
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goog.global = this;
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/**
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* A hook for overriding the define values in uncompiled mode.
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*
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* In uncompiled mode, `CLOSURE_UNCOMPILED_DEFINES` may be defined before
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* loading base.js. If a key is defined in `CLOSURE_UNCOMPILED_DEFINES`,
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* `goog.define` will use the value instead of the default value. This
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* allows flags to be overwritten without compilation (this is normally
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* accomplished with the compiler's "define" flag).
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*
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* Example:
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* <pre>
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* var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};
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* </pre>
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*
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* @type {Object<string, (string|number|boolean)>|undefined}
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*/
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goog.global.CLOSURE_UNCOMPILED_DEFINES;
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/**
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* A hook for overriding the define values in uncompiled or compiled mode,
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* like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code. In
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* uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence.
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*
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* Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or
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* string literals or the compiler will emit an error.
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*
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* While any @define value may be set, only those set with goog.define will be
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* effective for uncompiled code.
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*
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* Example:
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* <pre>
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* var CLOSURE_DEFINES = {'goog.DEBUG': false} ;
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* </pre>
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*
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* @type {Object<string, (string|number|boolean)>|undefined}
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*/
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goog.global.CLOSURE_DEFINES;
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/**
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* Returns true if the specified value is not undefined.
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*
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* @param {?} val Variable to test.
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* @return {boolean} Whether variable is defined.
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*/
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goog.isDef = function(val) {
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// void 0 always evaluates to undefined and hence we do not need to depend on
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// the definition of the global variable named 'undefined'.
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return val !== void 0;
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};
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/**
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* Returns true if the specified value is a string.
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* @param {?} val Variable to test.
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* @return {boolean} Whether variable is a string.
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*/
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goog.isString = function(val) {
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return typeof val == 'string';
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};
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/**
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* Returns true if the specified value is a boolean.
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* @param {?} val Variable to test.
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* @return {boolean} Whether variable is boolean.
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*/
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goog.isBoolean = function(val) {
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return typeof val == 'boolean';
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};
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/**
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* Returns true if the specified value is a number.
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* @param {?} val Variable to test.
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* @return {boolean} Whether variable is a number.
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*/
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goog.isNumber = function(val) {
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return typeof val == 'number';
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};
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/**
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* Builds an object structure for the provided namespace path, ensuring that
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* names that already exist are not overwritten. For example:
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* "a.b.c" -> a = {};a.b={};a.b.c={};
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* Used by goog.provide and goog.exportSymbol.
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* @param {string} name name of the object that this file defines.
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* @param {*=} opt_object the object to expose at the end of the path.
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* @param {Object=} opt_objectToExportTo The object to add the path to; default
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* is `goog.global`.
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* @private
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*/
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goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) {
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var parts = name.split('.');
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var cur = opt_objectToExportTo || goog.global;
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||
// Internet Explorer exhibits strange behavior when throwing errors from
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// methods externed in this manner. See the testExportSymbolExceptions in
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// base_test.html for an example.
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if (!(parts[0] in cur) && typeof cur.execScript != 'undefined') {
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cur.execScript('var ' + parts[0]);
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}
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for (var part; parts.length && (part = parts.shift());) {
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if (!parts.length && goog.isDef(opt_object)) {
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||
// last part and we have an object; use it
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cur[part] = opt_object;
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} else if (cur[part] && cur[part] !== Object.prototype[part]) {
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cur = cur[part];
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||
} else {
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cur = cur[part] = {};
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}
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}
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};
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/**
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* Defines a named value. In uncompiled mode, the value is retrieved from
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* CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and
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* has the property specified, and otherwise used the defined defaultValue.
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* When compiled the default can be overridden using the compiler
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* options or the value set in the CLOSURE_DEFINES object.
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*
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* @param {string} name The distinguished name to provide.
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* @param {string|number|boolean} defaultValue
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*/
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goog.define = function(name, defaultValue) {
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var value = defaultValue;
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if (!COMPILED) {
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var uncompiledDefines = goog.global.CLOSURE_UNCOMPILED_DEFINES;
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var defines = goog.global.CLOSURE_DEFINES;
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if (uncompiledDefines &&
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// Anti DOM-clobbering runtime check (b/37736576).
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/** @type {?} */ (uncompiledDefines).nodeType === undefined &&
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Object.prototype.hasOwnProperty.call(uncompiledDefines, name)) {
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value = uncompiledDefines[name];
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} else if (
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defines &&
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||
// Anti DOM-clobbering runtime check (b/37736576).
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/** @type {?} */ (defines).nodeType === undefined &&
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Object.prototype.hasOwnProperty.call(defines, name)) {
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value = defines[name];
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}
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}
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goog.exportPath_(name, value);
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};
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/**
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* @define {boolean} DEBUG is provided as a convenience so that debugging code
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* that should not be included in a production. It can be easily stripped
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* by specifying --define goog.DEBUG=false to the Closure Compiler aka
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* JSCompiler. For example, most toString() methods should be declared inside an
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* "if (goog.DEBUG)" conditional because they are generally used for debugging
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* purposes and it is difficult for the JSCompiler to statically determine
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* whether they are used.
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*/
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goog.define('goog.DEBUG', true);
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/**
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* @define {string} LOCALE defines the locale being used for compilation. It is
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* used to select locale specific data to be compiled in js binary. BUILD rule
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* can specify this value by "--define goog.LOCALE=<locale_name>" as a compiler
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* option.
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*
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||
* Take into account that the locale code format is important. You should use
|
||
* the canonical Unicode format with hyphen as a delimiter. Language must be
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||
* lowercase, Language Script - Capitalized, Region - UPPERCASE.
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||
* There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.
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*
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||
* See more info about locale codes here:
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* http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers
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||
*
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||
* For language codes you should use values defined by ISO 693-1. See it here
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* http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from
|
||
* this rule: the Hebrew language. For legacy reasons the old code (iw) should
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* be used instead of the new code (he).
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*
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*/
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goog.define('goog.LOCALE', 'en'); // default to en
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/**
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* @define {boolean} Whether this code is running on trusted sites.
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*
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* On untrusted sites, several native functions can be defined or overridden by
|
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* external libraries like Prototype, Datejs, and JQuery and setting this flag
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* to false forces closure to use its own implementations when possible.
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*
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||
* If your JavaScript can be loaded by a third party site and you are wary about
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||
* relying on non-standard implementations, specify
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||
* "--define goog.TRUSTED_SITE=false" to the compiler.
|
||
*/
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||
goog.define('goog.TRUSTED_SITE', true);
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/**
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* @define {boolean} Whether a project is expected to be running in strict mode.
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||
*
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||
* This define can be used to trigger alternate implementations compatible with
|
||
* running in EcmaScript Strict mode or warn about unavailable functionality.
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||
* @see https://goo.gl/PudQ4y
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||
*
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||
*/
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goog.define('goog.STRICT_MODE_COMPATIBLE', false);
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/**
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* @define {boolean} Whether code that calls {@link goog.setTestOnly} should
|
||
* be disallowed in the compilation unit.
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||
*/
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||
goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG);
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||
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||
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||
/**
|
||
* @define {boolean} Whether to use a Chrome app CSP-compliant method for
|
||
* loading scripts via goog.require. @see appendScriptSrcNode_.
|
||
*/
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||
goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false);
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||
|
||
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||
/**
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||
* Defines a namespace in Closure.
|
||
*
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||
* A namespace may only be defined once in a codebase. It may be defined using
|
||
* goog.provide() or goog.module().
|
||
*
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||
* The presence of one or more goog.provide() calls in a file indicates
|
||
* that the file defines the given objects/namespaces.
|
||
* Provided symbols must not be null or undefined.
|
||
*
|
||
* In addition, goog.provide() creates the object stubs for a namespace
|
||
* (for example, goog.provide("goog.foo.bar") will create the object
|
||
* goog.foo.bar if it does not already exist).
|
||
*
|
||
* Build tools also scan for provide/require/module statements
|
||
* to discern dependencies, build dependency files (see deps.js), etc.
|
||
*
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||
* @see goog.require
|
||
* @see goog.module
|
||
* @param {string} name Namespace provided by this file in the form
|
||
* "goog.package.part".
|
||
*/
|
||
goog.provide = function(name) {
|
||
if (goog.isInModuleLoader_()) {
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||
throw new Error('goog.provide can not be used within a module.');
|
||
}
|
||
if (!COMPILED) {
|
||
// Ensure that the same namespace isn't provided twice.
|
||
// A goog.module/goog.provide maps a goog.require to a specific file
|
||
if (goog.isProvided_(name)) {
|
||
throw new Error('Namespace "' + name + '" already declared.');
|
||
}
|
||
}
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||
|
||
goog.constructNamespace_(name);
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} name Namespace provided by this file in the form
|
||
* "goog.package.part".
|
||
* @param {Object=} opt_obj The object to embed in the namespace.
|
||
* @private
|
||
*/
|
||
goog.constructNamespace_ = function(name, opt_obj) {
|
||
if (!COMPILED) {
|
||
delete goog.implicitNamespaces_[name];
|
||
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||
var namespace = name;
|
||
while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {
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||
if (goog.getObjectByName(namespace)) {
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||
break;
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||
}
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||
goog.implicitNamespaces_[namespace] = true;
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||
}
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||
}
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||
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||
goog.exportPath_(name, opt_obj);
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns CSP nonce, if set for any script tag.
|
||
* @return {string} CSP nonce or empty string if no nonce is present.
|
||
*/
|
||
goog.getScriptNonce = function() {
|
||
if (goog.cspNonce_ === null) {
|
||
goog.cspNonce_ = goog.getScriptNonce_(goog.global.document) || '';
|
||
}
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||
return goog.cspNonce_;
|
||
};
|
||
|
||
|
||
/**
|
||
* According to the CSP3 spec a nonce must be a valid base64 string.
|
||
* @see https://www.w3.org/TR/CSP3/#grammardef-base64-value
|
||
* @private @const
|
||
*/
|
||
goog.NONCE_PATTERN_ = /^[\w+/_-]+[=]{0,2}$/;
|
||
|
||
|
||
/**
|
||
* @private {?string}
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||
*/
|
||
goog.cspNonce_ = null;
|
||
|
||
|
||
/**
|
||
* Returns CSP nonce, if set for any script tag.
|
||
* @param {!Document} doc
|
||
* @return {?string} CSP nonce or null if no nonce is present.
|
||
* @private
|
||
*/
|
||
goog.getScriptNonce_ = function(doc) {
|
||
var script = doc.querySelector('script[nonce]');
|
||
if (script) {
|
||
var nonce = script['nonce'] || script.getAttribute('nonce');
|
||
if (nonce && goog.NONCE_PATTERN_.test(nonce)) {
|
||
return nonce;
|
||
}
|
||
}
|
||
return null;
|
||
};
|
||
|
||
|
||
/**
|
||
* Module identifier validation regexp.
|
||
* Note: This is a conservative check, it is very possible to be more lenient,
|
||
* the primary exclusion here is "/" and "\" and a leading ".", these
|
||
* restrictions are intended to leave the door open for using goog.require
|
||
* with relative file paths rather than module identifiers.
|
||
* @private
|
||
*/
|
||
goog.VALID_MODULE_RE_ = /^[a-zA-Z_$][a-zA-Z0-9._$]*$/;
|
||
|
||
|
||
/**
|
||
* Defines a module in Closure.
|
||
*
|
||
* Marks that this file must be loaded as a module and claims the namespace.
|
||
*
|
||
* A namespace may only be defined once in a codebase. It may be defined using
|
||
* goog.provide() or goog.module().
|
||
*
|
||
* goog.module() has three requirements:
|
||
* - goog.module may not be used in the same file as goog.provide.
|
||
* - goog.module must be the first statement in the file.
|
||
* - only one goog.module is allowed per file.
|
||
*
|
||
* When a goog.module annotated file is loaded, it is enclosed in
|
||
* a strict function closure. This means that:
|
||
* - any variables declared in a goog.module file are private to the file
|
||
* (not global), though the compiler is expected to inline the module.
|
||
* - The code must obey all the rules of "strict" JavaScript.
|
||
* - the file will be marked as "use strict"
|
||
*
|
||
* NOTE: unlike goog.provide, goog.module does not declare any symbols by
|
||
* itself. If declared symbols are desired, use
|
||
* goog.module.declareLegacyNamespace().
|
||
*
|
||
*
|
||
* See the public goog.module proposal: http://goo.gl/Va1hin
|
||
*
|
||
* @param {string} name Namespace provided by this file in the form
|
||
* "goog.package.part", is expected but not required.
|
||
* @return {void}
|
||
*/
|
||
goog.module = function(name) {
|
||
if (!goog.isString(name) || !name ||
|
||
name.search(goog.VALID_MODULE_RE_) == -1) {
|
||
throw new Error('Invalid module identifier');
|
||
}
|
||
if (!goog.isInGoogModuleLoader_()) {
|
||
throw new Error(
|
||
'Module ' + name + ' has been loaded incorrectly. Note, ' +
|
||
'modules cannot be loaded as normal scripts. They require some kind of ' +
|
||
'pre-processing step. You\'re likely trying to load a module via a ' +
|
||
'script tag or as a part of a concatenated bundle without rewriting the ' +
|
||
'module. For more info see: ' +
|
||
'https://github.com/google/closure-library/wiki/goog.module:-an-ES6-module-like-alternative-to-goog.provide.');
|
||
}
|
||
if (goog.moduleLoaderState_.moduleName) {
|
||
throw new Error('goog.module may only be called once per module.');
|
||
}
|
||
|
||
// Store the module name for the loader.
|
||
goog.moduleLoaderState_.moduleName = name;
|
||
if (!COMPILED) {
|
||
// Ensure that the same namespace isn't provided twice.
|
||
// A goog.module/goog.provide maps a goog.require to a specific file
|
||
if (goog.isProvided_(name)) {
|
||
throw new Error('Namespace "' + name + '" already declared.');
|
||
}
|
||
delete goog.implicitNamespaces_[name];
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} name The module identifier.
|
||
* @return {?} The module exports for an already loaded module or null.
|
||
*
|
||
* Note: This is not an alternative to goog.require, it does not
|
||
* indicate a hard dependency, instead it is used to indicate
|
||
* an optional dependency or to access the exports of a module
|
||
* that has already been loaded.
|
||
* @suppress {missingProvide}
|
||
*/
|
||
goog.module.get = function(name) {
|
||
if (!COMPILED && name in goog.loadedModules_) {
|
||
if (goog.loadedModules_[name].type != goog.ModuleType.GOOG) {
|
||
throw new Error('Can only goog.module.get for goog.modules.');
|
||
}
|
||
if (goog.loadedModules_[name].moduleId != name) {
|
||
throw new Error('Cannot goog.module.get by path.');
|
||
}
|
||
}
|
||
|
||
return goog.module.getInternal_(name);
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} name The module identifier.
|
||
* @return {?} The module exports for an already loaded module or null.
|
||
* @private
|
||
*/
|
||
goog.module.getInternal_ = function(name) {
|
||
if (!COMPILED) {
|
||
if (name in goog.loadedModules_) {
|
||
return goog.loadedModules_[name].exports;
|
||
} else if (!goog.implicitNamespaces_[name]) {
|
||
var ns = goog.getObjectByName(name);
|
||
return ns != null ? ns : null;
|
||
}
|
||
}
|
||
return null;
|
||
};
|
||
|
||
|
||
/**
|
||
* Types of modules the debug loader can load.
|
||
* @enum {string}
|
||
*/
|
||
goog.ModuleType = {
|
||
ES6: 'es6',
|
||
GOOG: 'goog'
|
||
};
|
||
|
||
|
||
/**
|
||
* @private {?{
|
||
* moduleName: (string|undefined),
|
||
* declareLegacyNamespace:boolean,
|
||
* path:(string|undefined),
|
||
* type: goog.ModuleType
|
||
* }}
|
||
*/
|
||
goog.moduleLoaderState_ = null;
|
||
|
||
|
||
/**
|
||
* @private
|
||
* @return {boolean} Whether a is currently being initialized.
|
||
*/
|
||
goog.isInModuleLoader_ = function() {
|
||
return goog.isInGoogModuleLoader_() || goog.isInEs6ModuleLoader_();
|
||
};
|
||
|
||
|
||
/**
|
||
* @private
|
||
* @return {boolean} Whether a goog.module is currently being initialized.
|
||
*/
|
||
goog.isInGoogModuleLoader_ = function() {
|
||
return !!goog.moduleLoaderState_ &&
|
||
goog.moduleLoaderState_.type == goog.ModuleType.GOOG;
|
||
};
|
||
|
||
|
||
/**
|
||
* @private
|
||
* @return {boolean} Whether an es6 module is currently being initialized.
|
||
*/
|
||
goog.isInEs6ModuleLoader_ = function() {
|
||
return !!goog.moduleLoaderState_ &&
|
||
goog.moduleLoaderState_.type == goog.ModuleType.ES6;
|
||
};
|
||
|
||
|
||
/**
|
||
* @private
|
||
* @return {?string|undefined} Path of the current module being initialized.
|
||
*/
|
||
goog.getModulePath_ = function() {
|
||
return goog.moduleLoaderState_ && goog.moduleLoaderState_.path;
|
||
};
|
||
|
||
|
||
/**
|
||
* Provide the module's exports as a globally accessible object under the
|
||
* module's declared name. This is intended to ease migration to goog.module
|
||
* for files that have existing usages.
|
||
* @suppress {missingProvide}
|
||
*/
|
||
goog.module.declareLegacyNamespace = function() {
|
||
if (!COMPILED && !goog.isInGoogModuleLoader_()) {
|
||
throw new Error(
|
||
'goog.module.declareLegacyNamespace must be called from ' +
|
||
'within a goog.module');
|
||
}
|
||
if (!COMPILED && !goog.moduleLoaderState_.moduleName) {
|
||
throw new Error(
|
||
'goog.module must be called prior to ' +
|
||
'goog.module.declareLegacyNamespace.');
|
||
}
|
||
goog.moduleLoaderState_.declareLegacyNamespace = true;
|
||
};
|
||
|
||
|
||
/**
|
||
* Marks that the current file should only be used for testing, and never for
|
||
* live code in production.
|
||
*
|
||
* In the case of unit tests, the message may optionally be an exact namespace
|
||
* for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra
|
||
* provide (if not explicitly defined in the code).
|
||
*
|
||
* @param {string=} opt_message Optional message to add to the error that's
|
||
* raised when used in production code.
|
||
*/
|
||
goog.setTestOnly = function(opt_message) {
|
||
if (goog.DISALLOW_TEST_ONLY_CODE) {
|
||
opt_message = opt_message || '';
|
||
throw new Error(
|
||
'Importing test-only code into non-debug environment' +
|
||
(opt_message ? ': ' + opt_message : '.'));
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Forward declares a symbol. This is an indication to the compiler that the
|
||
* symbol may be used in the source yet is not required and may not be provided
|
||
* in compilation.
|
||
*
|
||
* The most common usage of forward declaration is code that takes a type as a
|
||
* function parameter but does not need to require it. By forward declaring
|
||
* instead of requiring, no hard dependency is made, and (if not required
|
||
* elsewhere) the namespace may never be required and thus, not be pulled
|
||
* into the JavaScript binary. If it is required elsewhere, it will be type
|
||
* checked as normal.
|
||
*
|
||
* Before using goog.forwardDeclare, please read the documentation at
|
||
* https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation to
|
||
* understand the options and tradeoffs when working with forward declarations.
|
||
*
|
||
* @param {string} name The namespace to forward declare in the form of
|
||
* "goog.package.part".
|
||
*/
|
||
goog.forwardDeclare = function(name) {};
|
||
|
||
|
||
/**
|
||
* Forward declare type information. Used to assign types to goog.global
|
||
* referenced object that would otherwise result in unknown type references
|
||
* and thus block property disambiguation.
|
||
*/
|
||
goog.forwardDeclare('Document');
|
||
goog.forwardDeclare('HTMLScriptElement');
|
||
goog.forwardDeclare('XMLHttpRequest');
|
||
|
||
|
||
if (!COMPILED) {
|
||
/**
|
||
* Check if the given name has been goog.provided. This will return false for
|
||
* names that are available only as implicit namespaces.
|
||
* @param {string} name name of the object to look for.
|
||
* @return {boolean} Whether the name has been provided.
|
||
* @private
|
||
*/
|
||
goog.isProvided_ = function(name) {
|
||
return (name in goog.loadedModules_) ||
|
||
(!goog.implicitNamespaces_[name] &&
|
||
goog.isDefAndNotNull(goog.getObjectByName(name)));
|
||
};
|
||
|
||
/**
|
||
* Namespaces implicitly defined by goog.provide. For example,
|
||
* goog.provide('goog.events.Event') implicitly declares that 'goog' and
|
||
* 'goog.events' must be namespaces.
|
||
*
|
||
* @type {!Object<string, (boolean|undefined)>}
|
||
* @private
|
||
*/
|
||
goog.implicitNamespaces_ = {'goog.module': true};
|
||
|
||
// NOTE: We add goog.module as an implicit namespace as goog.module is defined
|
||
// here and because the existing module package has not been moved yet out of
|
||
// the goog.module namespace. This satisifies both the debug loader and
|
||
// ahead-of-time dependency management.
|
||
}
|
||
|
||
|
||
/**
|
||
* Returns an object based on its fully qualified external name. The object
|
||
* is not found if null or undefined. If you are using a compilation pass that
|
||
* renames property names beware that using this function will not find renamed
|
||
* properties.
|
||
*
|
||
* @param {string} name The fully qualified name.
|
||
* @param {Object=} opt_obj The object within which to look; default is
|
||
* |goog.global|.
|
||
* @return {?} The value (object or primitive) or, if not found, null.
|
||
*/
|
||
goog.getObjectByName = function(name, opt_obj) {
|
||
var parts = name.split('.');
|
||
var cur = opt_obj || goog.global;
|
||
for (var i = 0; i < parts.length; i++) {
|
||
cur = cur[parts[i]];
|
||
if (!goog.isDefAndNotNull(cur)) {
|
||
return null;
|
||
}
|
||
}
|
||
return cur;
|
||
};
|
||
|
||
|
||
/**
|
||
* Globalizes a whole namespace, such as goog or goog.lang.
|
||
*
|
||
* @param {!Object} obj The namespace to globalize.
|
||
* @param {Object=} opt_global The object to add the properties to.
|
||
* @deprecated Properties may be explicitly exported to the global scope, but
|
||
* this should no longer be done in bulk.
|
||
*/
|
||
goog.globalize = function(obj, opt_global) {
|
||
var global = opt_global || goog.global;
|
||
for (var x in obj) {
|
||
global[x] = obj[x];
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Adds a dependency from a file to the files it requires.
|
||
* @param {string} relPath The path to the js file.
|
||
* @param {!Array<string>} provides An array of strings with
|
||
* the names of the objects this file provides.
|
||
* @param {!Array<string>} requires An array of strings with
|
||
* the names of the objects this file requires.
|
||
* @param {boolean|!Object<string>=} opt_loadFlags Parameters indicating
|
||
* how the file must be loaded. The boolean 'true' is equivalent
|
||
* to {'module': 'goog'} for backwards-compatibility. Valid properties
|
||
* and values include {'module': 'goog'} and {'lang': 'es6'}.
|
||
*/
|
||
goog.addDependency = function(relPath, provides, requires, opt_loadFlags) {
|
||
if (!COMPILED && goog.DEPENDENCIES_ENABLED) {
|
||
goog.debugLoader_.addDependency(relPath, provides, requires, opt_loadFlags);
|
||
}
|
||
};
|
||
|
||
|
||
|
||
|
||
// NOTE(nnaze): The debug DOM loader was included in base.js as an original way
|
||
// to do "debug-mode" development. The dependency system can sometimes be
|
||
// confusing, as can the debug DOM loader's asynchronous nature.
|
||
//
|
||
// With the DOM loader, a call to goog.require() is not blocking -- the script
|
||
// will not load until some point after the current script. If a namespace is
|
||
// needed at runtime, it needs to be defined in a previous script, or loaded via
|
||
// require() with its registered dependencies.
|
||
//
|
||
// User-defined namespaces may need their own deps file. For a reference on
|
||
// creating a deps file, see:
|
||
// Externally: https://developers.google.com/closure/library/docs/depswriter
|
||
//
|
||
// Because of legacy clients, the DOM loader can't be easily removed from
|
||
// base.js. Work was done to make it disableable or replaceable for
|
||
// different environments (DOM-less JavaScript interpreters like Rhino or V8,
|
||
// for example). See bootstrap/ for more information.
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether to enable the debug loader.
|
||
*
|
||
* If enabled, a call to goog.require() will attempt to load the namespace by
|
||
* appending a script tag to the DOM (if the namespace has been registered).
|
||
*
|
||
* If disabled, goog.require() will simply assert that the namespace has been
|
||
* provided (and depend on the fact that some outside tool correctly ordered
|
||
* the script).
|
||
*/
|
||
goog.define('goog.ENABLE_DEBUG_LOADER', true);
|
||
|
||
|
||
/**
|
||
* @param {string} msg
|
||
* @private
|
||
*/
|
||
goog.logToConsole_ = function(msg) {
|
||
if (goog.global.console) {
|
||
goog.global.console['error'](msg);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} requireOrPath
|
||
* @return {boolean}
|
||
* @private
|
||
*/
|
||
goog.isPath_ = function(requireOrPath) {
|
||
// Paths must be relative.
|
||
return requireOrPath.indexOf('./') == 0 || requireOrPath.indexOf('../') == 0;
|
||
};
|
||
|
||
|
||
/**
|
||
* Implements a system for the dynamic resolution of dependencies that works in
|
||
* parallel with the BUILD system. Note that all calls to goog.require will be
|
||
* stripped by the compiler.
|
||
* @see goog.provide
|
||
* @param {string} name Namespace to include (as was given in goog.provide()) in
|
||
* the form "goog.package.part".
|
||
* @return {?} If called within a goog.module file, the associated namespace or
|
||
* module otherwise null.
|
||
*/
|
||
goog.require = function(name) {
|
||
if (goog.isPath_(name)) {
|
||
if (goog.isInGoogModuleLoader_()) {
|
||
if (!goog.getModulePath_()) {
|
||
throw new Error(
|
||
'Current module has no path information. Was it loaded via ' +
|
||
'goog.loadModule without a path argument?');
|
||
}
|
||
|
||
name = goog.normalizePath_(goog.getModulePath_() + '/../' + name);
|
||
} else {
|
||
throw new Error('Cannot require by path outside of goog.modules.');
|
||
}
|
||
}
|
||
|
||
if (!COMPILED) {
|
||
// Might need to lazy load on old IE.
|
||
if (goog.ENABLE_DEBUG_LOADER) {
|
||
goog.debugLoader_.requested(name);
|
||
}
|
||
|
||
// If the object already exists we do not need to do anything.
|
||
if (goog.isProvided_(name)) {
|
||
if (goog.isInModuleLoader_()) {
|
||
return goog.module.getInternal_(name);
|
||
}
|
||
} else if (goog.ENABLE_DEBUG_LOADER) {
|
||
var moduleLoaderState = goog.moduleLoaderState_;
|
||
goog.moduleLoaderState_ = null;
|
||
try {
|
||
goog.debugLoader_.load_(name);
|
||
} finally {
|
||
goog.moduleLoaderState_ = moduleLoaderState;
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Path for included scripts.
|
||
* @type {string}
|
||
*/
|
||
goog.basePath = '';
|
||
|
||
|
||
/**
|
||
* A hook for overriding the base path.
|
||
* @type {string|undefined}
|
||
*/
|
||
goog.global.CLOSURE_BASE_PATH;
|
||
|
||
|
||
/**
|
||
* Whether to attempt to load Closure's deps file. By default, when uncompiled,
|
||
* deps files will attempt to be loaded.
|
||
* @type {boolean|undefined}
|
||
*/
|
||
goog.global.CLOSURE_NO_DEPS;
|
||
|
||
|
||
/**
|
||
* A function to import a single script. This is meant to be overridden when
|
||
* Closure is being run in non-HTML contexts, such as web workers. It's defined
|
||
* in the global scope so that it can be set before base.js is loaded, which
|
||
* allows deps.js to be imported properly.
|
||
*
|
||
* The first parameter the script source, which is a relative URI. The second,
|
||
* optional parameter is the script contents, in the event the script needed
|
||
* transformation. It should return true if the script was imported, false
|
||
* otherwise.
|
||
* @type {(function(string, string=): boolean)|undefined}
|
||
*/
|
||
goog.global.CLOSURE_IMPORT_SCRIPT;
|
||
|
||
|
||
/**
|
||
* Null function used for default values of callbacks, etc.
|
||
* @return {void} Nothing.
|
||
*/
|
||
goog.nullFunction = function() {};
|
||
|
||
|
||
/**
|
||
* When defining a class Foo with an abstract method bar(), you can do:
|
||
* Foo.prototype.bar = goog.abstractMethod
|
||
*
|
||
* Now if a subclass of Foo fails to override bar(), an error will be thrown
|
||
* when bar() is invoked.
|
||
*
|
||
* @type {!Function}
|
||
* @throws {Error} when invoked to indicate the method should be overridden.
|
||
*/
|
||
goog.abstractMethod = function() {
|
||
throw new Error('unimplemented abstract method');
|
||
};
|
||
|
||
|
||
/**
|
||
* Adds a `getInstance` static method that always returns the same
|
||
* instance object.
|
||
* @param {!Function} ctor The constructor for the class to add the static
|
||
* method to.
|
||
* @suppress {missingProperties} 'instance_' isn't a property on 'Function'
|
||
* but we don't have a better type to use here.
|
||
*/
|
||
goog.addSingletonGetter = function(ctor) {
|
||
// instance_ is immediately set to prevent issues with sealed constructors
|
||
// such as are encountered when a constructor is returned as the export object
|
||
// of a goog.module in unoptimized code.
|
||
ctor.instance_ = undefined;
|
||
ctor.getInstance = function() {
|
||
if (ctor.instance_) {
|
||
return ctor.instance_;
|
||
}
|
||
if (goog.DEBUG) {
|
||
// NOTE: JSCompiler can't optimize away Array#push.
|
||
goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;
|
||
}
|
||
return ctor.instance_ = new ctor;
|
||
};
|
||
};
|
||
|
||
|
||
/**
|
||
* All singleton classes that have been instantiated, for testing. Don't read
|
||
* it directly, use the `goog.testing.singleton` module. The compiler
|
||
* removes this variable if unused.
|
||
* @type {!Array<!Function>}
|
||
* @private
|
||
*/
|
||
goog.instantiatedSingletons_ = [];
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether to load goog.modules using `eval` when using
|
||
* the debug loader. This provides a better debugging experience as the
|
||
* source is unmodified and can be edited using Chrome Workspaces or similar.
|
||
* However in some environments the use of `eval` is banned
|
||
* so we provide an alternative.
|
||
*/
|
||
goog.define('goog.LOAD_MODULE_USING_EVAL', true);
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether the exports of goog.modules should be sealed when
|
||
* possible.
|
||
*/
|
||
goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG);
|
||
|
||
|
||
/**
|
||
* The registry of initialized modules:
|
||
* The module identifier or path to module exports map.
|
||
* @private @const {!Object<string, {exports:?,type:string,moduleId:string}>}
|
||
*/
|
||
goog.loadedModules_ = {};
|
||
|
||
|
||
/**
|
||
* True if the debug loader enabled and used.
|
||
* @const {boolean}
|
||
*/
|
||
goog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;
|
||
|
||
|
||
/**
|
||
* @define {string} How to decide whether to transpile. Valid values
|
||
* are 'always', 'never', and 'detect'. The default ('detect') is to
|
||
* use feature detection to determine which language levels need
|
||
* transpilation.
|
||
*/
|
||
// NOTE(user): we could expand this to accept a language level to bypass
|
||
// detection: e.g. goog.TRANSPILE == 'es5' would transpile ES6 files but
|
||
// would leave ES3 and ES5 files alone.
|
||
goog.define('goog.TRANSPILE', 'detect');
|
||
|
||
|
||
/**
|
||
* @define {string} Path to the transpiler. Executing the script at this
|
||
* path (relative to base.js) should define a function $jscomp.transpile.
|
||
*/
|
||
goog.define('goog.TRANSPILER', 'transpile.js');
|
||
|
||
|
||
/**
|
||
* @package {?boolean}
|
||
* Visible for testing.
|
||
*/
|
||
goog.hasBadLetScoping = null;
|
||
|
||
|
||
/**
|
||
* @return {boolean}
|
||
* @package Visible for testing.
|
||
*/
|
||
goog.useSafari10Workaround = function() {
|
||
if (goog.hasBadLetScoping == null) {
|
||
var hasBadLetScoping;
|
||
try {
|
||
hasBadLetScoping = !eval(
|
||
'"use strict";' +
|
||
'let x = 1; function f() { return typeof x; };' +
|
||
'f() == "number";');
|
||
} catch (e) {
|
||
// Assume that ES6 syntax isn't supported.
|
||
hasBadLetScoping = false;
|
||
}
|
||
goog.hasBadLetScoping = hasBadLetScoping;
|
||
}
|
||
return goog.hasBadLetScoping;
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} moduleDef
|
||
* @return {string}
|
||
* @package Visible for testing.
|
||
*/
|
||
goog.workaroundSafari10EvalBug = function(moduleDef) {
|
||
return '(function(){' + moduleDef +
|
||
'\n' + // Terminate any trailing single line comment.
|
||
';' + // Terminate any trailing expression.
|
||
'})();\n';
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {function(?):?|string} moduleDef The module definition.
|
||
* @param {string=} opt_path Path of this module. Required to goog.require ES6
|
||
* modules by path.
|
||
*/
|
||
goog.loadModule = function(moduleDef, opt_path) {
|
||
// NOTE: we allow function definitions to be either in the from
|
||
// of a string to eval (which keeps the original source intact) or
|
||
// in a eval forbidden environment (CSP) we allow a function definition
|
||
// which in its body must call `goog.module`, and return the exports
|
||
// of the module.
|
||
var previousState = goog.moduleLoaderState_;
|
||
try {
|
||
goog.moduleLoaderState_ = {
|
||
moduleName: '',
|
||
declareLegacyNamespace: false,
|
||
type: goog.ModuleType.GOOG,
|
||
path: opt_path
|
||
};
|
||
var exports;
|
||
if (goog.isFunction(moduleDef)) {
|
||
exports = moduleDef.call(undefined, {});
|
||
} else if (goog.isString(moduleDef)) {
|
||
if (goog.useSafari10Workaround()) {
|
||
moduleDef = goog.workaroundSafari10EvalBug(moduleDef);
|
||
}
|
||
|
||
exports = goog.loadModuleFromSource_.call(undefined, moduleDef);
|
||
} else {
|
||
throw new Error('Invalid module definition');
|
||
}
|
||
|
||
var moduleName = goog.moduleLoaderState_.moduleName;
|
||
if (goog.isString(moduleName) && moduleName) {
|
||
// Don't seal legacy namespaces as they may be used as a parent of
|
||
// another namespace
|
||
if (goog.moduleLoaderState_.declareLegacyNamespace) {
|
||
goog.constructNamespace_(moduleName, exports);
|
||
} else if (
|
||
goog.SEAL_MODULE_EXPORTS && Object.seal &&
|
||
typeof exports == 'object' && exports != null) {
|
||
Object.seal(exports);
|
||
}
|
||
|
||
var data = {
|
||
exports: exports,
|
||
type: goog.ModuleType.GOOG,
|
||
moduleId: goog.moduleLoaderState_.moduleName
|
||
};
|
||
goog.loadedModules_[moduleName] = data;
|
||
opt_path && (goog.loadedModules_[opt_path] = data);
|
||
} else {
|
||
throw new Error('Invalid module name \"' + moduleName + '\"');
|
||
}
|
||
} finally {
|
||
goog.moduleLoaderState_ = previousState;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @private @const
|
||
*/
|
||
goog.loadModuleFromSource_ = /** @type {function(string):?} */ (function() {
|
||
// NOTE: we avoid declaring parameters or local variables here to avoid
|
||
// masking globals or leaking values into the module definition.
|
||
'use strict';
|
||
var exports = {};
|
||
eval(arguments[0]);
|
||
return exports;
|
||
});
|
||
|
||
|
||
/**
|
||
* Normalize a file path by removing redundant ".." and extraneous "." file
|
||
* path components.
|
||
* @param {string} path
|
||
* @return {string}
|
||
* @private
|
||
*/
|
||
goog.normalizePath_ = function(path) {
|
||
var components = path.split('/');
|
||
var i = 0;
|
||
while (i < components.length) {
|
||
if (components[i] == '.') {
|
||
components.splice(i, 1);
|
||
} else if (
|
||
i && components[i] == '..' && components[i - 1] &&
|
||
components[i - 1] != '..') {
|
||
components.splice(--i, 2);
|
||
} else {
|
||
i++;
|
||
}
|
||
}
|
||
return components.join('/');
|
||
};
|
||
|
||
|
||
/**
|
||
* Provides a hook for loading a file when using Closure's goog.require() API
|
||
* with goog.modules. In particular this hook is provided to support Node.js.
|
||
*
|
||
* @type {(function(string):string)|undefined}
|
||
*/
|
||
goog.global.CLOSURE_LOAD_FILE_SYNC;
|
||
|
||
|
||
/**
|
||
* Loads file by synchronous XHR. Should not be used in production environments.
|
||
* @param {string} src Source URL.
|
||
* @return {?string} File contents, or null if load failed.
|
||
* @private
|
||
*/
|
||
goog.loadFileSync_ = function(src) {
|
||
if (goog.global.CLOSURE_LOAD_FILE_SYNC) {
|
||
return goog.global.CLOSURE_LOAD_FILE_SYNC(src);
|
||
} else {
|
||
try {
|
||
/** @type {XMLHttpRequest} */
|
||
var xhr = new goog.global['XMLHttpRequest']();
|
||
xhr.open('get', src, false);
|
||
xhr.send();
|
||
// NOTE: Successful http: requests have a status of 200, but successful
|
||
// file: requests may have a status of zero. Any other status, or a
|
||
// thrown exception (particularly in case of file: requests) indicates
|
||
// some sort of error, which we treat as a missing or unavailable file.
|
||
return xhr.status == 0 || xhr.status == 200 ? xhr.responseText : null;
|
||
} catch (err) {
|
||
// No need to rethrow or log, since errors should show up on their own.
|
||
return null;
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Lazily retrieves the transpiler and applies it to the source.
|
||
* @param {string} code JS code.
|
||
* @param {string} path Path to the code.
|
||
* @return {string} The transpiled code.
|
||
* @private
|
||
*/
|
||
goog.transpile_ = function(code, path) {
|
||
var jscomp = goog.global['$jscomp'];
|
||
if (!jscomp) {
|
||
goog.global['$jscomp'] = jscomp = {};
|
||
}
|
||
var transpile = jscomp.transpile;
|
||
if (!transpile) {
|
||
var transpilerPath = goog.basePath + goog.TRANSPILER;
|
||
var transpilerCode = goog.loadFileSync_(transpilerPath);
|
||
if (transpilerCode) {
|
||
// This must be executed synchronously, since by the time we know we
|
||
// need it, we're about to load and write the ES6 code synchronously,
|
||
// so a normal script-tag load will be too slow. Wrapped in a function
|
||
// so that code is eval'd in the global scope.
|
||
(function() {
|
||
eval(transpilerCode + '\n//# sourceURL=' + transpilerPath);
|
||
}).call(goog.global);
|
||
// Even though the transpiler is optional, if $gwtExport is found, it's
|
||
// a sign the transpiler was loaded and the $jscomp.transpile *should*
|
||
// be there.
|
||
if (goog.global['$gwtExport'] && goog.global['$gwtExport']['$jscomp'] &&
|
||
!goog.global['$gwtExport']['$jscomp']['transpile']) {
|
||
throw new Error(
|
||
'The transpiler did not properly export the "transpile" ' +
|
||
'method. $gwtExport: ' + JSON.stringify(goog.global['$gwtExport']));
|
||
}
|
||
// transpile.js only exports a single $jscomp function, transpile. We
|
||
// grab just that and add it to the existing definition of $jscomp which
|
||
// contains the polyfills.
|
||
goog.global['$jscomp'].transpile =
|
||
goog.global['$gwtExport']['$jscomp']['transpile'];
|
||
jscomp = goog.global['$jscomp'];
|
||
transpile = jscomp.transpile;
|
||
}
|
||
}
|
||
if (!transpile) {
|
||
// The transpiler is an optional component. If it's not available then
|
||
// replace it with a pass-through function that simply logs.
|
||
var suffix = ' requires transpilation but no transpiler was found.';
|
||
transpile = jscomp.transpile = function(code, path) {
|
||
// TODO(user): figure out some way to get this error to show up
|
||
// in test results, noting that the failure may occur in many
|
||
// different ways, including in loadModule() before the test
|
||
// runner even comes up.
|
||
goog.logToConsole_(path + suffix);
|
||
return code;
|
||
};
|
||
}
|
||
// Note: any transpilation errors/warnings will be logged to the console.
|
||
return transpile(code, path);
|
||
};
|
||
|
||
//==============================================================================
|
||
// Language Enhancements
|
||
//==============================================================================
|
||
|
||
|
||
/**
|
||
* This is a "fixed" version of the typeof operator. It differs from the typeof
|
||
* operator in such a way that null returns 'null' and arrays return 'array'.
|
||
* @param {?} value The value to get the type of.
|
||
* @return {string} The name of the type.
|
||
*/
|
||
goog.typeOf = function(value) {
|
||
var s = typeof value;
|
||
if (s == 'object') {
|
||
if (value) {
|
||
// Check these first, so we can avoid calling Object.prototype.toString if
|
||
// possible.
|
||
//
|
||
// IE improperly marshals typeof across execution contexts, but a
|
||
// cross-context object will still return false for "instanceof Object".
|
||
if (value instanceof Array) {
|
||
return 'array';
|
||
} else if (value instanceof Object) {
|
||
return s;
|
||
}
|
||
|
||
// HACK: In order to use an Object prototype method on the arbitrary
|
||
// value, the compiler requires the value be cast to type Object,
|
||
// even though the ECMA spec explicitly allows it.
|
||
var className = Object.prototype.toString.call(
|
||
/** @type {!Object} */ (value));
|
||
// In Firefox 3.6, attempting to access iframe window objects' length
|
||
// property throws an NS_ERROR_FAILURE, so we need to special-case it
|
||
// here.
|
||
if (className == '[object Window]') {
|
||
return 'object';
|
||
}
|
||
|
||
// We cannot always use constructor == Array or instanceof Array because
|
||
// different frames have different Array objects. In IE6, if the iframe
|
||
// where the array was created is destroyed, the array loses its
|
||
// prototype. Then dereferencing val.splice here throws an exception, so
|
||
// we can't use goog.isFunction. Calling typeof directly returns 'unknown'
|
||
// so that will work. In this case, this function will return false and
|
||
// most array functions will still work because the array is still
|
||
// array-like (supports length and []) even though it has lost its
|
||
// prototype.
|
||
// Mark Miller noticed that Object.prototype.toString
|
||
// allows access to the unforgeable [[Class]] property.
|
||
// 15.2.4.2 Object.prototype.toString ( )
|
||
// When the toString method is called, the following steps are taken:
|
||
// 1. Get the [[Class]] property of this object.
|
||
// 2. Compute a string value by concatenating the three strings
|
||
// "[object ", Result(1), and "]".
|
||
// 3. Return Result(2).
|
||
// and this behavior survives the destruction of the execution context.
|
||
if ((className == '[object Array]' ||
|
||
// In IE all non value types are wrapped as objects across window
|
||
// boundaries (not iframe though) so we have to do object detection
|
||
// for this edge case.
|
||
typeof value.length == 'number' &&
|
||
typeof value.splice != 'undefined' &&
|
||
typeof value.propertyIsEnumerable != 'undefined' &&
|
||
!value.propertyIsEnumerable('splice')
|
||
|
||
)) {
|
||
return 'array';
|
||
}
|
||
// HACK: There is still an array case that fails.
|
||
// function ArrayImpostor() {}
|
||
// ArrayImpostor.prototype = [];
|
||
// var impostor = new ArrayImpostor;
|
||
// this can be fixed by getting rid of the fast path
|
||
// (value instanceof Array) and solely relying on
|
||
// (value && Object.prototype.toString.vall(value) === '[object Array]')
|
||
// but that would require many more function calls and is not warranted
|
||
// unless closure code is receiving objects from untrusted sources.
|
||
|
||
// IE in cross-window calls does not correctly marshal the function type
|
||
// (it appears just as an object) so we cannot use just typeof val ==
|
||
// 'function'. However, if the object has a call property, it is a
|
||
// function.
|
||
if ((className == '[object Function]' ||
|
||
typeof value.call != 'undefined' &&
|
||
typeof value.propertyIsEnumerable != 'undefined' &&
|
||
!value.propertyIsEnumerable('call'))) {
|
||
return 'function';
|
||
}
|
||
|
||
} else {
|
||
return 'null';
|
||
}
|
||
|
||
} else if (s == 'function' && typeof value.call == 'undefined') {
|
||
// In Safari typeof nodeList returns 'function', and on Firefox typeof
|
||
// behaves similarly for HTML{Applet,Embed,Object}, Elements and RegExps. We
|
||
// would like to return object for those and we can detect an invalid
|
||
// function by making sure that the function object has a call method.
|
||
return 'object';
|
||
}
|
||
return s;
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the specified value is null.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is null.
|
||
*/
|
||
goog.isNull = function(val) {
|
||
return val === null;
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the specified value is defined and not null.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is defined and not null.
|
||
*/
|
||
goog.isDefAndNotNull = function(val) {
|
||
// Note that undefined == null.
|
||
return val != null;
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the specified value is an array.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is an array.
|
||
*/
|
||
goog.isArray = function(val) {
|
||
return goog.typeOf(val) == 'array';
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the object looks like an array. To qualify as array like
|
||
* the value needs to be either a NodeList or an object with a Number length
|
||
* property. Note that for this function neither strings nor functions are
|
||
* considered "array-like".
|
||
*
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is an array.
|
||
*/
|
||
goog.isArrayLike = function(val) {
|
||
var type = goog.typeOf(val);
|
||
// We do not use goog.isObject here in order to exclude function values.
|
||
return type == 'array' || type == 'object' && typeof val.length == 'number';
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the object looks like a Date. To qualify as Date-like the
|
||
* value needs to be an object and have a getFullYear() function.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is a like a Date.
|
||
*/
|
||
goog.isDateLike = function(val) {
|
||
return goog.isObject(val) && typeof val.getFullYear == 'function';
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the specified value is a function.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is a function.
|
||
*/
|
||
goog.isFunction = function(val) {
|
||
return goog.typeOf(val) == 'function';
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns true if the specified value is an object. This includes arrays and
|
||
* functions.
|
||
* @param {?} val Variable to test.
|
||
* @return {boolean} Whether variable is an object.
|
||
*/
|
||
goog.isObject = function(val) {
|
||
var type = typeof val;
|
||
return type == 'object' && val != null || type == 'function';
|
||
// return Object(val) === val also works, but is slower, especially if val is
|
||
// not an object.
|
||
};
|
||
|
||
|
||
/**
|
||
* Gets a unique ID for an object. This mutates the object so that further calls
|
||
* with the same object as a parameter returns the same value. The unique ID is
|
||
* guaranteed to be unique across the current session amongst objects that are
|
||
* passed into `getUid`. There is no guarantee that the ID is unique or
|
||
* consistent across sessions. It is unsafe to generate unique ID for function
|
||
* prototypes.
|
||
*
|
||
* @param {Object} obj The object to get the unique ID for.
|
||
* @return {number} The unique ID for the object.
|
||
*/
|
||
goog.getUid = function(obj) {
|
||
// TODO(arv): Make the type stricter, do not accept null.
|
||
|
||
// In Opera window.hasOwnProperty exists but always returns false so we avoid
|
||
// using it. As a consequence the unique ID generated for BaseClass.prototype
|
||
// and SubClass.prototype will be the same.
|
||
return obj[goog.UID_PROPERTY_] ||
|
||
(obj[goog.UID_PROPERTY_] = ++goog.uidCounter_);
|
||
};
|
||
|
||
|
||
/**
|
||
* Whether the given object is already assigned a unique ID.
|
||
*
|
||
* This does not modify the object.
|
||
*
|
||
* @param {!Object} obj The object to check.
|
||
* @return {boolean} Whether there is an assigned unique id for the object.
|
||
*/
|
||
goog.hasUid = function(obj) {
|
||
return !!obj[goog.UID_PROPERTY_];
|
||
};
|
||
|
||
|
||
/**
|
||
* Removes the unique ID from an object. This is useful if the object was
|
||
* previously mutated using `goog.getUid` in which case the mutation is
|
||
* undone.
|
||
* @param {Object} obj The object to remove the unique ID field from.
|
||
*/
|
||
goog.removeUid = function(obj) {
|
||
// TODO(arv): Make the type stricter, do not accept null.
|
||
|
||
// In IE, DOM nodes are not instances of Object and throw an exception if we
|
||
// try to delete. Instead we try to use removeAttribute.
|
||
if (obj !== null && 'removeAttribute' in obj) {
|
||
obj.removeAttribute(goog.UID_PROPERTY_);
|
||
}
|
||
|
||
try {
|
||
delete obj[goog.UID_PROPERTY_];
|
||
} catch (ex) {
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Name for unique ID property. Initialized in a way to help avoid collisions
|
||
* with other closure JavaScript on the same page.
|
||
* @type {string}
|
||
* @private
|
||
*/
|
||
goog.UID_PROPERTY_ = 'closure_uid_' + ((Math.random() * 1e9) >>> 0);
|
||
|
||
|
||
/**
|
||
* Counter for UID.
|
||
* @type {number}
|
||
* @private
|
||
*/
|
||
goog.uidCounter_ = 0;
|
||
|
||
|
||
/**
|
||
* Adds a hash code field to an object. The hash code is unique for the
|
||
* given object.
|
||
* @param {Object} obj The object to get the hash code for.
|
||
* @return {number} The hash code for the object.
|
||
* @deprecated Use goog.getUid instead.
|
||
*/
|
||
goog.getHashCode = goog.getUid;
|
||
|
||
|
||
/**
|
||
* Removes the hash code field from an object.
|
||
* @param {Object} obj The object to remove the field from.
|
||
* @deprecated Use goog.removeUid instead.
|
||
*/
|
||
goog.removeHashCode = goog.removeUid;
|
||
|
||
|
||
/**
|
||
* Clones a value. The input may be an Object, Array, or basic type. Objects and
|
||
* arrays will be cloned recursively.
|
||
*
|
||
* WARNINGS:
|
||
* <code>goog.cloneObject</code> does not detect reference loops. Objects that
|
||
* refer to themselves will cause infinite recursion.
|
||
*
|
||
* <code>goog.cloneObject</code> is unaware of unique identifiers, and copies
|
||
* UIDs created by <code>getUid</code> into cloned results.
|
||
*
|
||
* @param {*} obj The value to clone.
|
||
* @return {*} A clone of the input value.
|
||
* @deprecated goog.cloneObject is unsafe. Prefer the goog.object methods.
|
||
*/
|
||
goog.cloneObject = function(obj) {
|
||
var type = goog.typeOf(obj);
|
||
if (type == 'object' || type == 'array') {
|
||
if (typeof obj.clone === 'function') {
|
||
return obj.clone();
|
||
}
|
||
var clone = type == 'array' ? [] : {};
|
||
for (var key in obj) {
|
||
clone[key] = goog.cloneObject(obj[key]);
|
||
}
|
||
return clone;
|
||
}
|
||
|
||
return obj;
|
||
};
|
||
|
||
|
||
/**
|
||
* A native implementation of goog.bind.
|
||
* @param {?function(this:T, ...)} fn A function to partially apply.
|
||
* @param {T} selfObj Specifies the object which this should point to when the
|
||
* function is run.
|
||
* @param {...*} var_args Additional arguments that are partially applied to the
|
||
* function.
|
||
* @return {!Function} A partially-applied form of the function goog.bind() was
|
||
* invoked as a method of.
|
||
* @template T
|
||
* @private
|
||
*/
|
||
goog.bindNative_ = function(fn, selfObj, var_args) {
|
||
return /** @type {!Function} */ (fn.call.apply(fn.bind, arguments));
|
||
};
|
||
|
||
|
||
/**
|
||
* A pure-JS implementation of goog.bind.
|
||
* @param {?function(this:T, ...)} fn A function to partially apply.
|
||
* @param {T} selfObj Specifies the object which this should point to when the
|
||
* function is run.
|
||
* @param {...*} var_args Additional arguments that are partially applied to the
|
||
* function.
|
||
* @return {!Function} A partially-applied form of the function goog.bind() was
|
||
* invoked as a method of.
|
||
* @template T
|
||
* @private
|
||
*/
|
||
goog.bindJs_ = function(fn, selfObj, var_args) {
|
||
if (!fn) {
|
||
throw new Error();
|
||
}
|
||
|
||
if (arguments.length > 2) {
|
||
var boundArgs = Array.prototype.slice.call(arguments, 2);
|
||
return function() {
|
||
// Prepend the bound arguments to the current arguments.
|
||
var newArgs = Array.prototype.slice.call(arguments);
|
||
Array.prototype.unshift.apply(newArgs, boundArgs);
|
||
return fn.apply(selfObj, newArgs);
|
||
};
|
||
|
||
} else {
|
||
return function() {
|
||
return fn.apply(selfObj, arguments);
|
||
};
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Partially applies this function to a particular 'this object' and zero or
|
||
* more arguments. The result is a new function with some arguments of the first
|
||
* function pre-filled and the value of this 'pre-specified'.
|
||
*
|
||
* Remaining arguments specified at call-time are appended to the pre-specified
|
||
* ones.
|
||
*
|
||
* Also see: {@link #partial}.
|
||
*
|
||
* Usage:
|
||
* <pre>var barMethBound = goog.bind(myFunction, myObj, 'arg1', 'arg2');
|
||
* barMethBound('arg3', 'arg4');</pre>
|
||
*
|
||
* @param {?function(this:T, ...)} fn A function to partially apply.
|
||
* @param {T} selfObj Specifies the object which this should point to when the
|
||
* function is run.
|
||
* @param {...*} var_args Additional arguments that are partially applied to the
|
||
* function.
|
||
* @return {!Function} A partially-applied form of the function goog.bind() was
|
||
* invoked as a method of.
|
||
* @template T
|
||
* @suppress {deprecated} See above.
|
||
*/
|
||
goog.bind = function(fn, selfObj, var_args) {
|
||
// TODO(nicksantos): narrow the type signature.
|
||
if (Function.prototype.bind &&
|
||
// NOTE(nicksantos): Somebody pulled base.js into the default Chrome
|
||
// extension environment. This means that for Chrome extensions, they get
|
||
// the implementation of Function.prototype.bind that calls goog.bind
|
||
// instead of the native one. Even worse, we don't want to introduce a
|
||
// circular dependency between goog.bind and Function.prototype.bind, so
|
||
// we have to hack this to make sure it works correctly.
|
||
Function.prototype.bind.toString().indexOf('native code') != -1) {
|
||
goog.bind = goog.bindNative_;
|
||
} else {
|
||
goog.bind = goog.bindJs_;
|
||
}
|
||
return goog.bind.apply(null, arguments);
|
||
};
|
||
|
||
|
||
/**
|
||
* Like goog.bind(), except that a 'this object' is not required. Useful when
|
||
* the target function is already bound.
|
||
*
|
||
* Usage:
|
||
* var g = goog.partial(f, arg1, arg2);
|
||
* g(arg3, arg4);
|
||
*
|
||
* @param {Function} fn A function to partially apply.
|
||
* @param {...*} var_args Additional arguments that are partially applied to fn.
|
||
* @return {!Function} A partially-applied form of the function goog.partial()
|
||
* was invoked as a method of.
|
||
*/
|
||
goog.partial = function(fn, var_args) {
|
||
var args = Array.prototype.slice.call(arguments, 1);
|
||
return function() {
|
||
// Clone the array (with slice()) and append additional arguments
|
||
// to the existing arguments.
|
||
var newArgs = args.slice();
|
||
newArgs.push.apply(newArgs, arguments);
|
||
return fn.apply(this, newArgs);
|
||
};
|
||
};
|
||
|
||
|
||
/**
|
||
* Copies all the members of a source object to a target object. This method
|
||
* does not work on all browsers for all objects that contain keys such as
|
||
* toString or hasOwnProperty. Use goog.object.extend for this purpose.
|
||
* @param {Object} target Target.
|
||
* @param {Object} source Source.
|
||
*/
|
||
goog.mixin = function(target, source) {
|
||
for (var x in source) {
|
||
target[x] = source[x];
|
||
}
|
||
|
||
// For IE7 or lower, the for-in-loop does not contain any properties that are
|
||
// not enumerable on the prototype object (for example, isPrototypeOf from
|
||
// Object.prototype) but also it will not include 'replace' on objects that
|
||
// extend String and change 'replace' (not that it is common for anyone to
|
||
// extend anything except Object).
|
||
};
|
||
|
||
|
||
/**
|
||
* @return {number} An integer value representing the number of milliseconds
|
||
* between midnight, January 1, 1970 and the current time.
|
||
*/
|
||
goog.now = (goog.TRUSTED_SITE && Date.now) || (function() {
|
||
// Unary plus operator converts its operand to a number which in
|
||
// the case of
|
||
// a date is done by calling getTime().
|
||
return +new Date();
|
||
});
|
||
|
||
|
||
/**
|
||
* Evals JavaScript in the global scope. In IE this uses execScript, other
|
||
* browsers use goog.global.eval. If goog.global.eval does not evaluate in the
|
||
* global scope (for example, in Safari), appends a script tag instead.
|
||
* Throws an exception if neither execScript or eval is defined.
|
||
* @param {string} script JavaScript string.
|
||
*/
|
||
goog.globalEval = function(script) {
|
||
if (goog.global.execScript) {
|
||
goog.global.execScript(script, 'JavaScript');
|
||
} else if (goog.global.eval) {
|
||
// Test to see if eval works
|
||
if (goog.evalWorksForGlobals_ == null) {
|
||
try {
|
||
goog.global.eval('var _evalTest_ = 1;');
|
||
} catch (ignore) {
|
||
}
|
||
if (typeof goog.global['_evalTest_'] != 'undefined') {
|
||
try {
|
||
delete goog.global['_evalTest_'];
|
||
} catch (ignore) {
|
||
// Microsoft edge fails the deletion above in strict mode.
|
||
}
|
||
goog.evalWorksForGlobals_ = true;
|
||
} else {
|
||
goog.evalWorksForGlobals_ = false;
|
||
}
|
||
}
|
||
|
||
if (goog.evalWorksForGlobals_) {
|
||
goog.global.eval(script);
|
||
} else {
|
||
/** @type {!Document} */
|
||
var doc = goog.global.document;
|
||
var scriptElt =
|
||
/** @type {!HTMLScriptElement} */ (doc.createElement('SCRIPT'));
|
||
scriptElt.type = 'text/javascript';
|
||
scriptElt.defer = false;
|
||
// Note(user): can't use .innerHTML since "t('<test>')" will fail and
|
||
// .text doesn't work in Safari 2. Therefore we append a text node.
|
||
scriptElt.appendChild(doc.createTextNode(script));
|
||
doc.head.appendChild(scriptElt);
|
||
doc.head.removeChild(scriptElt);
|
||
}
|
||
} else {
|
||
throw new Error('goog.globalEval not available');
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Indicates whether or not we can call 'eval' directly to eval code in the
|
||
* global scope. Set to a Boolean by the first call to goog.globalEval (which
|
||
* empirically tests whether eval works for globals). @see goog.globalEval
|
||
* @type {?boolean}
|
||
* @private
|
||
*/
|
||
goog.evalWorksForGlobals_ = null;
|
||
|
||
|
||
/**
|
||
* Optional map of CSS class names to obfuscated names used with
|
||
* goog.getCssName().
|
||
* @private {!Object<string, string>|undefined}
|
||
* @see goog.setCssNameMapping
|
||
*/
|
||
goog.cssNameMapping_;
|
||
|
||
|
||
/**
|
||
* Optional obfuscation style for CSS class names. Should be set to either
|
||
* 'BY_WHOLE' or 'BY_PART' if defined.
|
||
* @type {string|undefined}
|
||
* @private
|
||
* @see goog.setCssNameMapping
|
||
*/
|
||
goog.cssNameMappingStyle_;
|
||
|
||
|
||
|
||
/**
|
||
* A hook for modifying the default behavior goog.getCssName. The function
|
||
* if present, will receive the standard output of the goog.getCssName as
|
||
* its input.
|
||
*
|
||
* @type {(function(string):string)|undefined}
|
||
*/
|
||
goog.global.CLOSURE_CSS_NAME_MAP_FN;
|
||
|
||
|
||
/**
|
||
* Handles strings that are intended to be used as CSS class names.
|
||
*
|
||
* This function works in tandem with @see goog.setCssNameMapping.
|
||
*
|
||
* Without any mapping set, the arguments are simple joined with a hyphen and
|
||
* passed through unaltered.
|
||
*
|
||
* When there is a mapping, there are two possible styles in which these
|
||
* mappings are used. In the BY_PART style, each part (i.e. in between hyphens)
|
||
* of the passed in css name is rewritten according to the map. In the BY_WHOLE
|
||
* style, the full css name is looked up in the map directly. If a rewrite is
|
||
* not specified by the map, the compiler will output a warning.
|
||
*
|
||
* When the mapping is passed to the compiler, it will replace calls to
|
||
* goog.getCssName with the strings from the mapping, e.g.
|
||
* var x = goog.getCssName('foo');
|
||
* var y = goog.getCssName(this.baseClass, 'active');
|
||
* becomes:
|
||
* var x = 'foo';
|
||
* var y = this.baseClass + '-active';
|
||
*
|
||
* If one argument is passed it will be processed, if two are passed only the
|
||
* modifier will be processed, as it is assumed the first argument was generated
|
||
* as a result of calling goog.getCssName.
|
||
*
|
||
* @param {string} className The class name.
|
||
* @param {string=} opt_modifier A modifier to be appended to the class name.
|
||
* @return {string} The class name or the concatenation of the class name and
|
||
* the modifier.
|
||
*/
|
||
goog.getCssName = function(className, opt_modifier) {
|
||
// String() is used for compatibility with compiled soy where the passed
|
||
// className can be non-string objects.
|
||
if (String(className).charAt(0) == '.') {
|
||
throw new Error(
|
||
'className passed in goog.getCssName must not start with ".".' +
|
||
' You passed: ' + className);
|
||
}
|
||
|
||
var getMapping = function(cssName) {
|
||
return goog.cssNameMapping_[cssName] || cssName;
|
||
};
|
||
|
||
var renameByParts = function(cssName) {
|
||
// Remap all the parts individually.
|
||
var parts = cssName.split('-');
|
||
var mapped = [];
|
||
for (var i = 0; i < parts.length; i++) {
|
||
mapped.push(getMapping(parts[i]));
|
||
}
|
||
return mapped.join('-');
|
||
};
|
||
|
||
var rename;
|
||
if (goog.cssNameMapping_) {
|
||
rename =
|
||
goog.cssNameMappingStyle_ == 'BY_WHOLE' ? getMapping : renameByParts;
|
||
} else {
|
||
rename = function(a) {
|
||
return a;
|
||
};
|
||
}
|
||
|
||
var result =
|
||
opt_modifier ? className + '-' + rename(opt_modifier) : rename(className);
|
||
|
||
// The special CLOSURE_CSS_NAME_MAP_FN allows users to specify further
|
||
// processing of the class name.
|
||
if (goog.global.CLOSURE_CSS_NAME_MAP_FN) {
|
||
return goog.global.CLOSURE_CSS_NAME_MAP_FN(result);
|
||
}
|
||
|
||
return result;
|
||
};
|
||
|
||
|
||
/**
|
||
* Sets the map to check when returning a value from goog.getCssName(). Example:
|
||
* <pre>
|
||
* goog.setCssNameMapping({
|
||
* "goog": "a",
|
||
* "disabled": "b",
|
||
* });
|
||
*
|
||
* var x = goog.getCssName('goog');
|
||
* // The following evaluates to: "a a-b".
|
||
* goog.getCssName('goog') + ' ' + goog.getCssName(x, 'disabled')
|
||
* </pre>
|
||
* When declared as a map of string literals to string literals, the JSCompiler
|
||
* will replace all calls to goog.getCssName() using the supplied map if the
|
||
* --process_closure_primitives flag is set.
|
||
*
|
||
* @param {!Object} mapping A map of strings to strings where keys are possible
|
||
* arguments to goog.getCssName() and values are the corresponding values
|
||
* that should be returned.
|
||
* @param {string=} opt_style The style of css name mapping. There are two valid
|
||
* options: 'BY_PART', and 'BY_WHOLE'.
|
||
* @see goog.getCssName for a description.
|
||
*/
|
||
goog.setCssNameMapping = function(mapping, opt_style) {
|
||
goog.cssNameMapping_ = mapping;
|
||
goog.cssNameMappingStyle_ = opt_style;
|
||
};
|
||
|
||
|
||
/**
|
||
* To use CSS renaming in compiled mode, one of the input files should have a
|
||
* call to goog.setCssNameMapping() with an object literal that the JSCompiler
|
||
* can extract and use to replace all calls to goog.getCssName(). In uncompiled
|
||
* mode, JavaScript code should be loaded before this base.js file that declares
|
||
* a global variable, CLOSURE_CSS_NAME_MAPPING, which is used below. This is
|
||
* to ensure that the mapping is loaded before any calls to goog.getCssName()
|
||
* are made in uncompiled mode.
|
||
*
|
||
* A hook for overriding the CSS name mapping.
|
||
* @type {!Object<string, string>|undefined}
|
||
*/
|
||
goog.global.CLOSURE_CSS_NAME_MAPPING;
|
||
|
||
|
||
if (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {
|
||
// This does not call goog.setCssNameMapping() because the JSCompiler
|
||
// requires that goog.setCssNameMapping() be called with an object literal.
|
||
goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;
|
||
}
|
||
|
||
|
||
/**
|
||
* Gets a localized message.
|
||
*
|
||
* This function is a compiler primitive. If you give the compiler a localized
|
||
* message bundle, it will replace the string at compile-time with a localized
|
||
* version, and expand goog.getMsg call to a concatenated string.
|
||
*
|
||
* Messages must be initialized in the form:
|
||
* <code>
|
||
* var MSG_NAME = goog.getMsg('Hello {$placeholder}', {'placeholder': 'world'});
|
||
* </code>
|
||
*
|
||
* This function produces a string which should be treated as plain text. Use
|
||
* {@link goog.html.SafeHtmlFormatter} in conjunction with goog.getMsg to
|
||
* produce SafeHtml.
|
||
*
|
||
* @param {string} str Translatable string, places holders in the form {$foo}.
|
||
* @param {Object<string, string>=} opt_values Maps place holder name to value.
|
||
* @return {string} message with placeholders filled.
|
||
*/
|
||
goog.getMsg = function(str, opt_values) {
|
||
if (opt_values) {
|
||
str = str.replace(/\{\$([^}]+)}/g, function(match, key) {
|
||
return (opt_values != null && key in opt_values) ? opt_values[key] :
|
||
match;
|
||
});
|
||
}
|
||
return str;
|
||
};
|
||
|
||
|
||
/**
|
||
* Gets a localized message. If the message does not have a translation, gives a
|
||
* fallback message.
|
||
*
|
||
* This is useful when introducing a new message that has not yet been
|
||
* translated into all languages.
|
||
*
|
||
* This function is a compiler primitive. Must be used in the form:
|
||
* <code>var x = goog.getMsgWithFallback(MSG_A, MSG_B);</code>
|
||
* where MSG_A and MSG_B were initialized with goog.getMsg.
|
||
*
|
||
* @param {string} a The preferred message.
|
||
* @param {string} b The fallback message.
|
||
* @return {string} The best translated message.
|
||
*/
|
||
goog.getMsgWithFallback = function(a, b) {
|
||
return a;
|
||
};
|
||
|
||
|
||
/**
|
||
* Exposes an unobfuscated global namespace path for the given object.
|
||
* Note that fields of the exported object *will* be obfuscated, unless they are
|
||
* exported in turn via this function or goog.exportProperty.
|
||
*
|
||
* Also handy for making public items that are defined in anonymous closures.
|
||
*
|
||
* ex. goog.exportSymbol('public.path.Foo', Foo);
|
||
*
|
||
* ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);
|
||
* public.path.Foo.staticFunction();
|
||
*
|
||
* ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',
|
||
* Foo.prototype.myMethod);
|
||
* new public.path.Foo().myMethod();
|
||
*
|
||
* @param {string} publicPath Unobfuscated name to export.
|
||
* @param {*} object Object the name should point to.
|
||
* @param {Object=} opt_objectToExportTo The object to add the path to; default
|
||
* is goog.global.
|
||
*/
|
||
goog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {
|
||
goog.exportPath_(publicPath, object, opt_objectToExportTo);
|
||
};
|
||
|
||
|
||
/**
|
||
* Exports a property unobfuscated into the object's namespace.
|
||
* ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);
|
||
* ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);
|
||
* @param {Object} object Object whose static property is being exported.
|
||
* @param {string} publicName Unobfuscated name to export.
|
||
* @param {*} symbol Object the name should point to.
|
||
*/
|
||
goog.exportProperty = function(object, publicName, symbol) {
|
||
object[publicName] = symbol;
|
||
};
|
||
|
||
|
||
/**
|
||
* Inherit the prototype methods from one constructor into another.
|
||
*
|
||
* Usage:
|
||
* <pre>
|
||
* function ParentClass(a, b) { }
|
||
* ParentClass.prototype.foo = function(a) { };
|
||
*
|
||
* function ChildClass(a, b, c) {
|
||
* ChildClass.base(this, 'constructor', a, b);
|
||
* }
|
||
* goog.inherits(ChildClass, ParentClass);
|
||
*
|
||
* var child = new ChildClass('a', 'b', 'see');
|
||
* child.foo(); // This works.
|
||
* </pre>
|
||
*
|
||
* @param {!Function} childCtor Child class.
|
||
* @param {!Function} parentCtor Parent class.
|
||
* @suppress {strictMissingProperties} superClass_ and base is not defined on
|
||
* Function.
|
||
*/
|
||
goog.inherits = function(childCtor, parentCtor) {
|
||
/** @constructor */
|
||
function tempCtor() {}
|
||
tempCtor.prototype = parentCtor.prototype;
|
||
childCtor.superClass_ = parentCtor.prototype;
|
||
childCtor.prototype = new tempCtor();
|
||
/** @override */
|
||
childCtor.prototype.constructor = childCtor;
|
||
|
||
/**
|
||
* Calls superclass constructor/method.
|
||
*
|
||
* This function is only available if you use goog.inherits to
|
||
* express inheritance relationships between classes.
|
||
*
|
||
* NOTE: This is a replacement for goog.base and for superClass_
|
||
* property defined in childCtor.
|
||
*
|
||
* @param {!Object} me Should always be "this".
|
||
* @param {string} methodName The method name to call. Calling
|
||
* superclass constructor can be done with the special string
|
||
* 'constructor'.
|
||
* @param {...*} var_args The arguments to pass to superclass
|
||
* method/constructor.
|
||
* @return {*} The return value of the superclass method/constructor.
|
||
*/
|
||
childCtor.base = function(me, methodName, var_args) {
|
||
// Copying using loop to avoid deop due to passing arguments object to
|
||
// function. This is faster in many JS engines as of late 2014.
|
||
var args = new Array(arguments.length - 2);
|
||
for (var i = 2; i < arguments.length; i++) {
|
||
args[i - 2] = arguments[i];
|
||
}
|
||
return parentCtor.prototype[methodName].apply(me, args);
|
||
};
|
||
};
|
||
|
||
|
||
/**
|
||
* Call up to the superclass.
|
||
*
|
||
* If this is called from a constructor, then this calls the superclass
|
||
* constructor with arguments 1-N.
|
||
*
|
||
* If this is called from a prototype method, then you must pass the name of the
|
||
* method as the second argument to this function. If you do not, you will get a
|
||
* runtime error. This calls the superclass' method with arguments 2-N.
|
||
*
|
||
* This function only works if you use goog.inherits to express inheritance
|
||
* relationships between your classes.
|
||
*
|
||
* This function is a compiler primitive. At compile-time, the compiler will do
|
||
* macro expansion to remove a lot of the extra overhead that this function
|
||
* introduces. The compiler will also enforce a lot of the assumptions that this
|
||
* function makes, and treat it as a compiler error if you break them.
|
||
*
|
||
* @param {!Object} me Should always be "this".
|
||
* @param {*=} opt_methodName The method name if calling a super method.
|
||
* @param {...*} var_args The rest of the arguments.
|
||
* @return {*} The return value of the superclass method.
|
||
* @suppress {es5Strict} This method can not be used in strict mode, but
|
||
* all Closure Library consumers must depend on this file.
|
||
* @deprecated goog.base is not strict mode compatible. Prefer the static
|
||
* "base" method added to the constructor by goog.inherits
|
||
* or ES6 classes and the "super" keyword.
|
||
*/
|
||
goog.base = function(me, opt_methodName, var_args) {
|
||
var caller = arguments.callee.caller;
|
||
|
||
if (goog.STRICT_MODE_COMPATIBLE || (goog.DEBUG && !caller)) {
|
||
throw new Error(
|
||
'arguments.caller not defined. goog.base() cannot be used ' +
|
||
'with strict mode code. See ' +
|
||
'http://www.ecma-international.org/ecma-262/5.1/#sec-C');
|
||
}
|
||
|
||
if (typeof caller.superClass_ !== 'undefined') {
|
||
// Copying using loop to avoid deop due to passing arguments object to
|
||
// function. This is faster in many JS engines as of late 2014.
|
||
var ctorArgs = new Array(arguments.length - 1);
|
||
for (var i = 1; i < arguments.length; i++) {
|
||
ctorArgs[i - 1] = arguments[i];
|
||
}
|
||
// This is a constructor. Call the superclass constructor.
|
||
return caller.superClass_.constructor.apply(me, ctorArgs);
|
||
}
|
||
|
||
if (typeof opt_methodName != 'string' && typeof opt_methodName != 'symbol') {
|
||
throw new Error(
|
||
'method names provided to goog.base must be a string or a symbol');
|
||
}
|
||
|
||
// Copying using loop to avoid deop due to passing arguments object to
|
||
// function. This is faster in many JS engines as of late 2014.
|
||
var args = new Array(arguments.length - 2);
|
||
for (var i = 2; i < arguments.length; i++) {
|
||
args[i - 2] = arguments[i];
|
||
}
|
||
var foundCaller = false;
|
||
for (var ctor = me.constructor; ctor;
|
||
ctor = ctor.superClass_ && ctor.superClass_.constructor) {
|
||
if (ctor.prototype[opt_methodName] === caller) {
|
||
foundCaller = true;
|
||
} else if (foundCaller) {
|
||
return ctor.prototype[opt_methodName].apply(me, args);
|
||
}
|
||
}
|
||
|
||
// If we did not find the caller in the prototype chain, then one of two
|
||
// things happened:
|
||
// 1) The caller is an instance method.
|
||
// 2) This method was not called by the right caller.
|
||
if (me[opt_methodName] === caller) {
|
||
return me.constructor.prototype[opt_methodName].apply(me, args);
|
||
} else {
|
||
throw new Error(
|
||
'goog.base called from a method of one name ' +
|
||
'to a method of a different name');
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Allow for aliasing within scope functions. This function exists for
|
||
* uncompiled code - in compiled code the calls will be inlined and the aliases
|
||
* applied. In uncompiled code the function is simply run since the aliases as
|
||
* written are valid JavaScript.
|
||
*
|
||
*
|
||
* @param {function()} fn Function to call. This function can contain aliases
|
||
* to namespaces (e.g. "var dom = goog.dom") or classes
|
||
* (e.g. "var Timer = goog.Timer").
|
||
*/
|
||
goog.scope = function(fn) {
|
||
if (goog.isInModuleLoader_()) {
|
||
throw new Error('goog.scope is not supported within a module.');
|
||
}
|
||
fn.call(goog.global);
|
||
};
|
||
|
||
|
||
/*
|
||
* To support uncompiled, strict mode bundles that use eval to divide source
|
||
* like so:
|
||
* eval('someSource;//# sourceUrl sourcefile.js');
|
||
* We need to export the globally defined symbols "goog" and "COMPILED".
|
||
* Exporting "goog" breaks the compiler optimizations, so we required that
|
||
* be defined externally.
|
||
* NOTE: We don't use goog.exportSymbol here because we don't want to trigger
|
||
* extern generation when that compiler option is enabled.
|
||
*/
|
||
if (!COMPILED) {
|
||
goog.global['COMPILED'] = COMPILED;
|
||
}
|
||
|
||
|
||
//==============================================================================
|
||
// goog.defineClass implementation
|
||
//==============================================================================
|
||
|
||
|
||
/**
|
||
* Creates a restricted form of a Closure "class":
|
||
* - from the compiler's perspective, the instance returned from the
|
||
* constructor is sealed (no new properties may be added). This enables
|
||
* better checks.
|
||
* - the compiler will rewrite this definition to a form that is optimal
|
||
* for type checking and optimization (initially this will be a more
|
||
* traditional form).
|
||
*
|
||
* @param {Function} superClass The superclass, Object or null.
|
||
* @param {goog.defineClass.ClassDescriptor} def
|
||
* An object literal describing
|
||
* the class. It may have the following properties:
|
||
* "constructor": the constructor function
|
||
* "statics": an object literal containing methods to add to the constructor
|
||
* as "static" methods or a function that will receive the constructor
|
||
* function as its only parameter to which static properties can
|
||
* be added.
|
||
* all other properties are added to the prototype.
|
||
* @return {!Function} The class constructor.
|
||
*/
|
||
goog.defineClass = function(superClass, def) {
|
||
// TODO(johnlenz): consider making the superClass an optional parameter.
|
||
var constructor = def.constructor;
|
||
var statics = def.statics;
|
||
// Wrap the constructor prior to setting up the prototype and static methods.
|
||
if (!constructor || constructor == Object.prototype.constructor) {
|
||
constructor = function() {
|
||
throw new Error(
|
||
'cannot instantiate an interface (no constructor defined).');
|
||
};
|
||
}
|
||
|
||
var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);
|
||
if (superClass) {
|
||
goog.inherits(cls, superClass);
|
||
}
|
||
|
||
// Remove all the properties that should not be copied to the prototype.
|
||
delete def.constructor;
|
||
delete def.statics;
|
||
|
||
goog.defineClass.applyProperties_(cls.prototype, def);
|
||
if (statics != null) {
|
||
if (statics instanceof Function) {
|
||
statics(cls);
|
||
} else {
|
||
goog.defineClass.applyProperties_(cls, statics);
|
||
}
|
||
}
|
||
|
||
return cls;
|
||
};
|
||
|
||
|
||
/**
|
||
* @typedef {{
|
||
* constructor: (!Function|undefined),
|
||
* statics: (Object|undefined|function(Function):void)
|
||
* }}
|
||
*/
|
||
goog.defineClass.ClassDescriptor;
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether the instances returned by goog.defineClass should
|
||
* be sealed when possible.
|
||
*
|
||
* When sealing is disabled the constructor function will not be wrapped by
|
||
* goog.defineClass, making it incompatible with ES6 class methods.
|
||
*/
|
||
goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);
|
||
|
||
|
||
/**
|
||
* If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is
|
||
* defined, this function will wrap the constructor in a function that seals the
|
||
* results of the provided constructor function.
|
||
*
|
||
* @param {!Function} ctr The constructor whose results maybe be sealed.
|
||
* @param {Function} superClass The superclass constructor.
|
||
* @return {!Function} The replacement constructor.
|
||
* @private
|
||
*/
|
||
goog.defineClass.createSealingConstructor_ = function(ctr, superClass) {
|
||
if (!goog.defineClass.SEAL_CLASS_INSTANCES) {
|
||
// Do now wrap the constructor when sealing is disabled. Angular code
|
||
// depends on this for injection to work properly.
|
||
return ctr;
|
||
}
|
||
|
||
// Compute whether the constructor is sealable at definition time, rather
|
||
// than when the instance is being constructed.
|
||
var superclassSealable = !goog.defineClass.isUnsealable_(superClass);
|
||
|
||
/**
|
||
* @this {Object}
|
||
* @return {?}
|
||
*/
|
||
var wrappedCtr = function() {
|
||
// Don't seal an instance of a subclass when it calls the constructor of
|
||
// its super class as there is most likely still setup to do.
|
||
var instance = ctr.apply(this, arguments) || this;
|
||
instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];
|
||
|
||
if (this.constructor === wrappedCtr && superclassSealable &&
|
||
Object.seal instanceof Function) {
|
||
Object.seal(instance);
|
||
}
|
||
return instance;
|
||
};
|
||
|
||
return wrappedCtr;
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {Function} ctr The constructor to test.
|
||
* @return {boolean} Whether the constructor has been tagged as unsealable
|
||
* using goog.tagUnsealableClass.
|
||
* @private
|
||
*/
|
||
goog.defineClass.isUnsealable_ = function(ctr) {
|
||
return ctr && ctr.prototype &&
|
||
ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_];
|
||
};
|
||
|
||
|
||
// TODO(johnlenz): share these values with the goog.object
|
||
/**
|
||
* The names of the fields that are defined on Object.prototype.
|
||
* @type {!Array<string>}
|
||
* @private
|
||
* @const
|
||
*/
|
||
goog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [
|
||
'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
|
||
'toLocaleString', 'toString', 'valueOf'
|
||
];
|
||
|
||
|
||
// TODO(johnlenz): share this function with the goog.object
|
||
/**
|
||
* @param {!Object} target The object to add properties to.
|
||
* @param {!Object} source The object to copy properties from.
|
||
* @private
|
||
*/
|
||
goog.defineClass.applyProperties_ = function(target, source) {
|
||
// TODO(johnlenz): update this to support ES5 getters/setters
|
||
|
||
var key;
|
||
for (key in source) {
|
||
if (Object.prototype.hasOwnProperty.call(source, key)) {
|
||
target[key] = source[key];
|
||
}
|
||
}
|
||
|
||
// For IE the for-in-loop does not contain any properties that are not
|
||
// enumerable on the prototype object (for example isPrototypeOf from
|
||
// Object.prototype) and it will also not include 'replace' on objects that
|
||
// extend String and change 'replace' (not that it is common for anyone to
|
||
// extend anything except Object).
|
||
for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {
|
||
key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];
|
||
if (Object.prototype.hasOwnProperty.call(source, key)) {
|
||
target[key] = source[key];
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Sealing classes breaks the older idiom of assigning properties on the
|
||
* prototype rather than in the constructor. As such, goog.defineClass
|
||
* must not seal subclasses of these old-style classes until they are fixed.
|
||
* Until then, this marks a class as "broken", instructing defineClass
|
||
* not to seal subclasses.
|
||
* @param {!Function} ctr The legacy constructor to tag as unsealable.
|
||
*/
|
||
goog.tagUnsealableClass = function(ctr) {
|
||
if (!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES) {
|
||
ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = true;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Name for unsealable tag property.
|
||
* @const @private {string}
|
||
*/
|
||
goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = 'goog_defineClass_legacy_unsealable';
|
||
|
||
|
||
// There's a bug in the compiler where without collapse properties the
|
||
// Closure namespace defines do not guard code correctly. To help reduce code
|
||
// size also check for !COMPILED even though it redundant until this is fixed.
|
||
if (!COMPILED && goog.DEPENDENCIES_ENABLED) {
|
||
|
||
/**
|
||
* Tries to detect whether is in the context of an HTML document.
|
||
* @return {boolean} True if it looks like HTML document.
|
||
* @private
|
||
*/
|
||
goog.inHtmlDocument_ = function() {
|
||
/** @type {!Document} */
|
||
var doc = goog.global.document;
|
||
return doc != null && 'write' in doc; // XULDocument misses write.
|
||
};
|
||
|
||
|
||
/**
|
||
* We'd like to check for if the document readyState is 'loading'; however
|
||
* there are bugs on IE 10 and below where the readyState being anything other
|
||
* than 'complete' is not reliable.
|
||
* @return {boolean}
|
||
* @private
|
||
*/
|
||
goog.isDocumentLoading_ = function() {
|
||
// attachEvent is available on IE 6 thru 10 only, and thus can be used to
|
||
// detect those browsers.
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
return doc.attachEvent ? doc.readyState != 'complete' :
|
||
doc.readyState == 'loading';
|
||
};
|
||
|
||
|
||
/**
|
||
* Tries to detect the base path of base.js script that bootstraps Closure.
|
||
* @private
|
||
*/
|
||
goog.findBasePath_ = function() {
|
||
if (goog.isDef(goog.global.CLOSURE_BASE_PATH) &&
|
||
// Anti DOM-clobbering runtime check (b/37736576).
|
||
goog.isString(goog.global.CLOSURE_BASE_PATH)) {
|
||
goog.basePath = goog.global.CLOSURE_BASE_PATH;
|
||
return;
|
||
} else if (!goog.inHtmlDocument_()) {
|
||
return;
|
||
}
|
||
/** @type {!Document} */
|
||
var doc = goog.global.document;
|
||
// If we have a currentScript available, use it exclusively.
|
||
var currentScript = doc.currentScript;
|
||
if (currentScript) {
|
||
var scripts = [currentScript];
|
||
} else {
|
||
var scripts = doc.getElementsByTagName('SCRIPT');
|
||
}
|
||
// Search backwards since the current script is in almost all cases the one
|
||
// that has base.js.
|
||
for (var i = scripts.length - 1; i >= 0; --i) {
|
||
var script = /** @type {!HTMLScriptElement} */ (scripts[i]);
|
||
var src = script.src;
|
||
var qmark = src.lastIndexOf('?');
|
||
var l = qmark == -1 ? src.length : qmark;
|
||
if (src.substr(l - 7, 7) == 'base.js') {
|
||
goog.basePath = src.substr(0, l - 7);
|
||
return;
|
||
}
|
||
}
|
||
};
|
||
|
||
goog.findBasePath_();
|
||
|
||
/** @struct @constructor @final */
|
||
goog.Transpiler = function() {
|
||
/** @private {?Object<string, boolean>} */
|
||
this.requiresTranspilation_ = null;
|
||
};
|
||
|
||
|
||
/**
|
||
* Returns a newly created map from language mode string to a boolean
|
||
* indicating whether transpilation should be done for that mode.
|
||
*
|
||
* Guaranteed invariant:
|
||
* For any two modes, l1 and l2 where l2 is a newer mode than l1,
|
||
* `map[l1] == true` implies that `map[l2] == true`.
|
||
*
|
||
* Note this method is extracted and used elsewhere, so it cannot rely on
|
||
* anything external (it should easily be able to be transformed into a
|
||
* standalone, top level function).
|
||
*
|
||
* @private
|
||
* @return {!Object<string, boolean>}
|
||
*/
|
||
goog.Transpiler.prototype.createRequiresTranspilation_ = function() {
|
||
var /** !Object<string, boolean> */ requiresTranspilation = {'es3': false};
|
||
var transpilationRequiredForAllLaterModes = false;
|
||
|
||
/**
|
||
* Adds an entry to requiresTranspliation for the given language mode.
|
||
*
|
||
* IMPORTANT: Calls must be made in order from oldest to newest language
|
||
* mode.
|
||
* @param {string} modeName
|
||
* @param {function(): boolean} isSupported Returns true if the JS engine
|
||
* supports the given mode.
|
||
*/
|
||
function addNewerLanguageTranspilationCheck(modeName, isSupported) {
|
||
if (transpilationRequiredForAllLaterModes) {
|
||
requiresTranspilation[modeName] = true;
|
||
} else if (isSupported()) {
|
||
requiresTranspilation[modeName] = false;
|
||
} else {
|
||
requiresTranspilation[modeName] = true;
|
||
transpilationRequiredForAllLaterModes = true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Does the given code evaluate without syntax errors and return a truthy
|
||
* result?
|
||
*/
|
||
function /** boolean */ evalCheck(/** string */ code) {
|
||
try {
|
||
return !!eval(code);
|
||
} catch (ignored) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
var userAgent = goog.global.navigator && goog.global.navigator.userAgent ?
|
||
goog.global.navigator.userAgent :
|
||
'';
|
||
|
||
// Identify ES3-only browsers by their incorrect treatment of commas.
|
||
addNewerLanguageTranspilationCheck('es5', function() {
|
||
return evalCheck('[1,].length==1');
|
||
});
|
||
addNewerLanguageTranspilationCheck('es6', function() {
|
||
// Edge has a non-deterministic (i.e., not reproducible) bug with ES6:
|
||
// https://github.com/Microsoft/ChakraCore/issues/1496.
|
||
var re = /Edge\/(\d+)(\.\d)*/i;
|
||
var edgeUserAgent = userAgent.match(re);
|
||
if (edgeUserAgent && Number(edgeUserAgent[1]) < 15) {
|
||
return false;
|
||
}
|
||
// Test es6: [FF50 (?), Edge 14 (?), Chrome 50]
|
||
// (a) default params (specifically shadowing locals),
|
||
// (b) destructuring, (c) block-scoped functions,
|
||
// (d) for-of (const), (e) new.target/Reflect.construct
|
||
var es6fullTest =
|
||
'class X{constructor(){if(new.target!=String)throw 1;this.x=42}}' +
|
||
'let q=Reflect.construct(X,[],String);if(q.x!=42||!(q instanceof ' +
|
||
'String))throw 1;for(const a of[2,3]){if(a==2)continue;function ' +
|
||
'f(z={a}){let a=0;return z.a}{function f(){return 0;}}return f()' +
|
||
'==3}';
|
||
|
||
return evalCheck('(()=>{"use strict";' + es6fullTest + '})()');
|
||
});
|
||
// TODO(joeltine): Remove es6-impl references for b/31340605.
|
||
// Consider es6-impl (widely-implemented es6 features) to be supported
|
||
// whenever es6 is supported. Technically es6-impl is a lower level of
|
||
// support than es6, but we don't have tests specifically for it.
|
||
addNewerLanguageTranspilationCheck('es6-impl', function() {
|
||
return true;
|
||
});
|
||
// ** and **= are the only new features in 'es7'
|
||
addNewerLanguageTranspilationCheck('es7', function() {
|
||
return evalCheck('2 ** 2 == 4');
|
||
});
|
||
// async functions are the only new features in 'es8'
|
||
addNewerLanguageTranspilationCheck('es8', function() {
|
||
return evalCheck('async () => 1, true');
|
||
});
|
||
addNewerLanguageTranspilationCheck('es9', function() {
|
||
return evalCheck('({...rest} = {}), true');
|
||
});
|
||
addNewerLanguageTranspilationCheck('es_next', function() {
|
||
return evalCheck('({...rest} = {}), true');
|
||
});
|
||
return requiresTranspilation;
|
||
};
|
||
|
||
|
||
/**
|
||
* Determines whether the given language needs to be transpiled.
|
||
* @param {string} lang
|
||
* @param {string|undefined} module
|
||
* @return {boolean}
|
||
*/
|
||
goog.Transpiler.prototype.needsTranspile = function(lang, module) {
|
||
// TODO(user): ES6 module support detection.
|
||
if (goog.TRANSPILE == 'always') {
|
||
return true;
|
||
} else if (goog.TRANSPILE == 'never') {
|
||
return false;
|
||
} else if (!this.requiresTranspilation_) {
|
||
this.requiresTranspilation_ = this.createRequiresTranspilation_();
|
||
}
|
||
if (lang in this.requiresTranspilation_) {
|
||
return this.requiresTranspilation_[lang];
|
||
} else {
|
||
throw new Error('Unknown language mode: ' + lang);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Lazily retrieves the transpiler and applies it to the source.
|
||
* @param {string} code JS code.
|
||
* @param {string} path Path to the code.
|
||
* @return {string} The transpiled code.
|
||
*/
|
||
goog.Transpiler.prototype.transpile = function(code, path) {
|
||
// TODO(user): We should delete goog.transpile_ and just have this
|
||
// function. But there's some compile error atm where goog.global is being
|
||
// stripped incorrectly without this.
|
||
return goog.transpile_(code, path);
|
||
};
|
||
|
||
|
||
/** @private @final {!goog.Transpiler} */
|
||
goog.transpiler_ = new goog.Transpiler();
|
||
|
||
/**
|
||
* Rewrites closing script tags in input to avoid ending an enclosing script
|
||
* tag.
|
||
*
|
||
* @param {string} str
|
||
* @return {string}
|
||
* @private
|
||
*/
|
||
goog.protectScriptTag_ = function(str) {
|
||
return str.replace(/<\/(SCRIPT)/ig, '\\x3c/$1');
|
||
};
|
||
|
||
|
||
/**
|
||
* A debug loader is responsible for downloading and executing javascript
|
||
* files in an unbundled, uncompiled environment.
|
||
*
|
||
* This can be custimized via the setDependencyFactory method, or by
|
||
* CLOSURE_IMPORT_SCRIPT/CLOSURE_LOAD_FILE_SYNC.
|
||
*
|
||
* @struct @constructor @final @private
|
||
*/
|
||
goog.DebugLoader_ = function() {
|
||
/** @private @const {!Object<string, !goog.Dependency>} */
|
||
this.dependencies_ = {};
|
||
/** @private @const {!Object<string, string>} */
|
||
this.idToPath_ = {};
|
||
/** @private @const {!Object<string, boolean>} */
|
||
this.written_ = {};
|
||
/** @private @const {!Array<!goog.Dependency>} */
|
||
this.loadingDeps_ = [];
|
||
/** @private {!Array<!goog.Dependency>} */
|
||
this.depsToLoad_ = [];
|
||
/** @private {boolean} */
|
||
this.paused_ = false;
|
||
/** @private {!goog.DependencyFactory} */
|
||
this.factory_ = new goog.DependencyFactory(goog.transpiler_);
|
||
/** @private @const {!Object<string, !Function>} */
|
||
this.deferredCallbacks_ = {};
|
||
/** @private @const {!Array<string>} */
|
||
this.deferredQueue_ = [];
|
||
};
|
||
|
||
/**
|
||
* @param {!Array<string>} namespaces
|
||
* @param {function(): undefined} callback Function to call once all the
|
||
* namespaces have loaded.
|
||
*/
|
||
goog.DebugLoader_.prototype.bootstrap = function(namespaces, callback) {
|
||
var cb = callback;
|
||
function resolve() {
|
||
if (cb) {
|
||
goog.global.setTimeout(cb, 0);
|
||
cb = null;
|
||
}
|
||
}
|
||
|
||
if (!namespaces.length) {
|
||
resolve();
|
||
return;
|
||
}
|
||
|
||
var deps = [];
|
||
for (var i = 0; i < namespaces.length; i++) {
|
||
var path = this.getPathFromDeps_(namespaces[i]);
|
||
if (!path) {
|
||
throw new Error('Unregonized namespace: ' + namespaces[i]);
|
||
}
|
||
deps.push(this.dependencies_[path]);
|
||
}
|
||
|
||
var require = goog.require;
|
||
var loaded = 0;
|
||
for (var i = 0; i < namespaces.length; i++) {
|
||
require(namespaces[i]);
|
||
deps[i].onLoad(function() {
|
||
if (++loaded == namespaces.length) {
|
||
resolve();
|
||
}
|
||
});
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Loads the Closure Dependency file.
|
||
*
|
||
* Exposed a public function so CLOSURE_NO_DEPS can be set to false, base
|
||
* loaded, setDependencyFactory called, and then this called. i.e. allows
|
||
* custom loading of the deps file.
|
||
*/
|
||
goog.DebugLoader_.prototype.loadClosureDeps = function() {
|
||
// Circumvent addDependency, which would try to transpile deps.js if
|
||
// transpile is set to always.
|
||
var relPath = 'deps.js';
|
||
this.depsToLoad_.push(this.factory_.createDependency(
|
||
goog.normalizePath_(goog.basePath + relPath), relPath, [], [], {},
|
||
false));
|
||
this.loadDeps_();
|
||
};
|
||
|
||
|
||
/**
|
||
* Notifies the debug loader when a dependency has been requested.
|
||
*
|
||
* @param {string} absPathOrId Path of the dependency or goog id.
|
||
* @param {boolean=} opt_force
|
||
*/
|
||
goog.DebugLoader_.prototype.requested = function(absPathOrId, opt_force) {
|
||
var path = this.getPathFromDeps_(absPathOrId);
|
||
if (path &&
|
||
(opt_force || this.areDepsLoaded_(this.dependencies_[path].requires))) {
|
||
var callback = this.deferredCallbacks_[path];
|
||
if (callback) {
|
||
delete this.deferredCallbacks_[path];
|
||
callback();
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Sets the dependency factory, which can be used to create custom
|
||
* goog.Dependency implementations to control how dependencies are loaded.
|
||
*
|
||
* @param {!goog.DependencyFactory} factory
|
||
*/
|
||
goog.DebugLoader_.prototype.setDependencyFactory = function(factory) {
|
||
this.factory_ = factory;
|
||
};
|
||
|
||
|
||
/**
|
||
* Travserses the dependency graph and queues the given dependency, and all of
|
||
* its transitive dependencies, for loading and then starts loading if not
|
||
* paused.
|
||
*
|
||
* @param {string} absPathOrId
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.load_ = function(absPathOrId) {
|
||
if (!this.getPathFromDeps_(absPathOrId)) {
|
||
var errorMessage = 'goog.require could not find: ' + absPathOrId;
|
||
|
||
goog.logToConsole_(errorMessage);
|
||
throw Error(errorMessage);
|
||
} else {
|
||
var loader = this;
|
||
|
||
var deps = [];
|
||
|
||
/** @param {string} absPathOrId */
|
||
var visit = function(absPathOrId) {
|
||
var path = loader.getPathFromDeps_(absPathOrId);
|
||
|
||
if (!path) {
|
||
throw new Error('Bad dependency path or symbol: ' + absPathOrId);
|
||
}
|
||
|
||
if (loader.written_[path]) {
|
||
return;
|
||
}
|
||
|
||
loader.written_[path] = true;
|
||
|
||
var dep = loader.dependencies_[path];
|
||
for (var i = 0; i < dep.requires.length; i++) {
|
||
if (!goog.isProvided_(dep.requires[i])) {
|
||
visit(dep.requires[i]);
|
||
}
|
||
}
|
||
|
||
deps.push(dep);
|
||
};
|
||
|
||
visit(absPathOrId);
|
||
|
||
var wasLoading = !!this.depsToLoad_.length;
|
||
this.depsToLoad_ = this.depsToLoad_.concat(deps);
|
||
|
||
if (!this.paused_ && !wasLoading) {
|
||
this.loadDeps_();
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Loads any queued dependencies until they are all loaded or paused.
|
||
*
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.loadDeps_ = function() {
|
||
var loader = this;
|
||
var paused = this.paused_;
|
||
|
||
while (this.depsToLoad_.length && !paused) {
|
||
(function() {
|
||
var loadCallDone = false;
|
||
var dep = loader.depsToLoad_.shift();
|
||
|
||
var loaded = false;
|
||
loader.loading_(dep);
|
||
|
||
var controller = {
|
||
pause: function() {
|
||
if (loadCallDone) {
|
||
throw new Error('Cannot call pause after the call to load.');
|
||
} else {
|
||
paused = true;
|
||
}
|
||
},
|
||
resume: function() {
|
||
if (loadCallDone) {
|
||
loader.resume_();
|
||
} else {
|
||
// Some dep called pause and then resume in the same load call.
|
||
// Just keep running this same loop.
|
||
paused = false;
|
||
}
|
||
},
|
||
loaded: function() {
|
||
if (loaded) {
|
||
throw new Error('Double call to loaded.');
|
||
}
|
||
|
||
loaded = true;
|
||
loader.loaded_(dep);
|
||
},
|
||
pending: function() {
|
||
// Defensive copy.
|
||
var pending = [];
|
||
for (var i = 0; i < loader.loadingDeps_.length; i++) {
|
||
pending.push(loader.loadingDeps_[i]);
|
||
}
|
||
return pending;
|
||
},
|
||
/**
|
||
* @param {string} path
|
||
* @param {goog.ModuleType} type
|
||
*/
|
||
setModuleState: function(path, type) {
|
||
goog.moduleLoaderState_ = {
|
||
path: path,
|
||
type: type,
|
||
moduleName: '',
|
||
declareLegacyNamespace: false
|
||
};
|
||
},
|
||
registerEs6ModuleExports: function(path, exports) {
|
||
goog.loadedModules_[path] = {
|
||
exports: exports,
|
||
type: goog.ModuleType.ES6,
|
||
moduleId: ''
|
||
};
|
||
},
|
||
registerGoogModuleExports: function(moduleId, exports) {
|
||
goog.loadedModules_[moduleId] = {
|
||
exports: exports,
|
||
type: goog.ModuleType.GOOG,
|
||
moduleId: moduleId
|
||
};
|
||
},
|
||
clearModuleState: function() {
|
||
goog.moduleLoaderState_ = null;
|
||
},
|
||
defer: function(callback) {
|
||
if (loadCallDone) {
|
||
throw new Error(
|
||
'Cannot register with defer after the call to load.');
|
||
}
|
||
loader.defer_(dep, callback);
|
||
},
|
||
areDepsLoaded: function() {
|
||
return loader.areDepsLoaded_(dep.requires);
|
||
}
|
||
};
|
||
|
||
try {
|
||
dep.load(controller);
|
||
} finally {
|
||
loadCallDone = true;
|
||
}
|
||
})();
|
||
}
|
||
|
||
if (paused) {
|
||
this.pause_();
|
||
}
|
||
};
|
||
|
||
|
||
/** @private */
|
||
goog.DebugLoader_.prototype.pause_ = function() {
|
||
this.paused_ = true;
|
||
};
|
||
|
||
|
||
/** @private */
|
||
goog.DebugLoader_.prototype.resume_ = function() {
|
||
if (this.paused_) {
|
||
this.paused_ = false;
|
||
this.loadDeps_();
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Marks the given dependency as loading (load has been called but it has not
|
||
* yet marked itself as finished). Useful for dependencies that want to know
|
||
* what else is loading. Example: goog.modules cannot eval if there are
|
||
* loading dependencies.
|
||
*
|
||
* @param {!goog.Dependency} dep
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.loading_ = function(dep) {
|
||
this.loadingDeps_.push(dep);
|
||
};
|
||
|
||
|
||
/**
|
||
* Marks the given dependency as having finished loading and being available
|
||
* for require.
|
||
*
|
||
* @param {!goog.Dependency} dep
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.loaded_ = function(dep) {
|
||
for (var i = 0; i < this.loadingDeps_.length; i++) {
|
||
if (this.loadingDeps_[i] == dep) {
|
||
this.loadingDeps_.splice(i, 1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
for (var i = 0; i < this.deferredQueue_.length; i++) {
|
||
if (this.deferredQueue_[i] == dep.path) {
|
||
this.deferredQueue_.splice(i, 1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (this.loadingDeps_.length == this.deferredQueue_.length &&
|
||
!this.depsToLoad_.length) {
|
||
// Something has asked to load these, but they may not be directly
|
||
// required again later, so load them now that we know we're done loading
|
||
// everything else. e.g. a goog module entry point.
|
||
while (this.deferredQueue_.length) {
|
||
this.requested(this.deferredQueue_.shift(), true);
|
||
}
|
||
}
|
||
|
||
dep.loaded();
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {!Array<string>} pathsOrIds
|
||
* @return {boolean}
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.areDepsLoaded_ = function(pathsOrIds) {
|
||
for (var i = 0; i < pathsOrIds.length; i++) {
|
||
var path = this.getPathFromDeps_(pathsOrIds[i]);
|
||
if (!path ||
|
||
(!(path in this.deferredCallbacks_) &&
|
||
!goog.isProvided_(pathsOrIds[i]))) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} absPathOrId
|
||
* @return {?string}
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.getPathFromDeps_ = function(absPathOrId) {
|
||
if (absPathOrId in this.idToPath_) {
|
||
return this.idToPath_[absPathOrId];
|
||
} else if (absPathOrId in this.dependencies_) {
|
||
return absPathOrId;
|
||
} else {
|
||
return null;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {!goog.Dependency} dependency
|
||
* @param {!Function} callback
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.defer_ = function(dependency, callback) {
|
||
this.deferredCallbacks_[dependency.path] = callback;
|
||
this.deferredQueue_.push(dependency.path);
|
||
};
|
||
|
||
|
||
/**
|
||
* Interface for goog.Dependency implementations to have some control over
|
||
* loading of dependencies.
|
||
*
|
||
* @record
|
||
*/
|
||
goog.LoadController = function() {};
|
||
|
||
|
||
/**
|
||
* Tells the controller to halt loading of more dependencies.
|
||
*/
|
||
goog.LoadController.prototype.pause = function() {};
|
||
|
||
|
||
/**
|
||
* Tells the controller to resume loading of more dependencies if paused.
|
||
*/
|
||
goog.LoadController.prototype.resume = function() {};
|
||
|
||
|
||
/**
|
||
* Tells the controller that this dependency has finished loading.
|
||
*
|
||
* This causes this to be removed from pending() and any load callbacks to
|
||
* fire.
|
||
*/
|
||
goog.LoadController.prototype.loaded = function() {};
|
||
|
||
|
||
/**
|
||
* List of dependencies on which load has been called but which have not
|
||
* called loaded on their controller. This includes the current dependency.
|
||
*
|
||
* @return {!Array<!goog.Dependency>}
|
||
*/
|
||
goog.LoadController.prototype.pending = function() {};
|
||
|
||
|
||
/**
|
||
* Registers an object as an ES6 module's exports so that goog.modules may
|
||
* require it by path.
|
||
*
|
||
* @param {string} path Full path of the module.
|
||
* @param {?} exports
|
||
*/
|
||
goog.LoadController.prototype.registerEs6ModuleExports = function(
|
||
path, exports) {};
|
||
|
||
|
||
/**
|
||
* Sets the current module state. Allows goog.modules to require by path
|
||
* and lets goog.require return values.
|
||
*
|
||
* @param {string} path Full path of the current module.
|
||
* @param {goog.ModuleType} type Type of module.
|
||
*/
|
||
goog.LoadController.prototype.setModuleState = function(path, type) {};
|
||
|
||
|
||
/**
|
||
* Clears the current module state.
|
||
*/
|
||
goog.LoadController.prototype.clearModuleState = function() {};
|
||
|
||
|
||
/**
|
||
* Registers a callback to call once the dependency is actually requested
|
||
* via goog.require + all of the immediate dependencies have been loaded or
|
||
* all other files have been loaded. Allows for lazy loading until
|
||
* require'd without pausing dependency loading, which is needed on old IE.
|
||
*
|
||
* @param {!Function} callback
|
||
*/
|
||
goog.LoadController.prototype.defer = function(callback) {};
|
||
|
||
|
||
/**
|
||
* @return {boolean}
|
||
*/
|
||
goog.LoadController.prototype.areDepsLoaded = function() {};
|
||
|
||
|
||
/**
|
||
* Basic super class for all dependencies Closure Library can load.
|
||
*
|
||
* This default implementation is designed to load untranspiled, non-module
|
||
* scripts in a web broswer.
|
||
*
|
||
* For transpiled non-goog.module files {@see goog.TranspiledDependency}.
|
||
* For goog.modules see {@see goog.GoogModuleDependency}.
|
||
* For untranspiled ES6 modules {@see goog.Es6ModuleDependency}.
|
||
*
|
||
* @param {string} path Absolute path of this script.
|
||
* @param {string} relativePath Path of this script relative to goog.basePath.
|
||
* @param {!Array<string>} provides goog.provided or goog.module symbols
|
||
* in this file.
|
||
* @param {!Array<string>} requires goog symbols or relative paths to Closure
|
||
* this depends on.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @struct @constructor
|
||
*/
|
||
goog.Dependency = function(
|
||
path, relativePath, provides, requires, loadFlags) {
|
||
/** @const */
|
||
this.path = path;
|
||
/** @const */
|
||
this.relativePath = relativePath;
|
||
/** @const */
|
||
this.provides = provides;
|
||
/** @const */
|
||
this.requires = requires;
|
||
/** @const */
|
||
this.loadFlags = loadFlags;
|
||
/** @private {boolean} */
|
||
this.loaded_ = false;
|
||
/** @private {!Array<function()>} */
|
||
this.loadCallbacks_ = [];
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {function()} callback Callback to fire as soon as this has loaded.
|
||
* @final
|
||
*/
|
||
goog.Dependency.prototype.onLoad = function(callback) {
|
||
if (this.loaded_) {
|
||
callback();
|
||
} else {
|
||
this.loadCallbacks_.push(callback);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Marks this dependency as loaded and fires any callbacks registered with
|
||
* onLoad.
|
||
* @final
|
||
*/
|
||
goog.Dependency.prototype.loaded = function() {
|
||
this.loaded_ = true;
|
||
var callbacks = this.loadCallbacks_;
|
||
this.loadCallbacks_ = [];
|
||
for (var i = 0; i < callbacks.length; i++) {
|
||
callbacks[i]();
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Whether or not document.written / appended script tags should be deferred.
|
||
*
|
||
* @private {boolean}
|
||
*/
|
||
goog.Dependency.defer_ = false;
|
||
|
||
|
||
/**
|
||
* Map of script ready / state change callbacks. Old IE cannot handle putting
|
||
* these properties on goog.global.
|
||
*
|
||
* @private @const {!Object<string, function(?):undefined>}
|
||
*/
|
||
goog.Dependency.callbackMap_ = {};
|
||
|
||
|
||
/**
|
||
* @param {function(...?):?} callback
|
||
* @return {string}
|
||
* @private
|
||
*/
|
||
goog.Dependency.registerCallback_ = function(callback) {
|
||
var key = Math.random().toString(32);
|
||
goog.Dependency.callbackMap_[key] = callback;
|
||
return key;
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} key
|
||
* @private
|
||
*/
|
||
goog.Dependency.unregisterCallback_ = function(key) {
|
||
delete goog.Dependency.callbackMap_[key];
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} key
|
||
* @param {...?} var_args
|
||
* @private
|
||
* @suppress {unusedPrivateMembers}
|
||
*/
|
||
goog.Dependency.callback_ = function(key, var_args) {
|
||
if (key in goog.Dependency.callbackMap_) {
|
||
var callback = goog.Dependency.callbackMap_[key];
|
||
var args = [];
|
||
for (var i = 1; i < arguments.length; i++) {
|
||
args.push(arguments[i]);
|
||
}
|
||
callback.apply(undefined, args);
|
||
} else {
|
||
var errorMessage = 'Callback key ' + key +
|
||
' does not exist (was base.js loaded more than once?).';
|
||
throw Error(errorMessage);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Starts loading this dependency. This dependency can pause loading if it
|
||
* needs to and resume it later via the controller interface.
|
||
*
|
||
* When this is loaded it should call controller.loaded(). Note that this will
|
||
* end up calling the loaded method of this dependency; there is no need to
|
||
* call it explicitly.
|
||
*
|
||
* @param {!goog.LoadController} controller
|
||
*/
|
||
goog.Dependency.prototype.load = function(controller) {
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT) {
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {
|
||
controller.loaded();
|
||
} else {
|
||
controller.pause();
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (!goog.inHtmlDocument_()) {
|
||
goog.logToConsole_(
|
||
'Cannot use default debug loader outside of HTML documents.');
|
||
if (this.relativePath == 'deps.js') {
|
||
// Some old code is relying on base.js auto loading deps.js failing with
|
||
// no error before later setting CLOSURE_IMPORT_SCRIPT.
|
||
// CLOSURE_IMPORT_SCRIPT should be set *before* base.js is loaded, or
|
||
// CLOSURE_NO_DEPS set to true.
|
||
goog.logToConsole_(
|
||
'Consider setting CLOSURE_IMPORT_SCRIPT before loading base.js, ' +
|
||
'or seting CLOSURE_NO_DEPS to true.');
|
||
controller.loaded();
|
||
} else {
|
||
controller.pause();
|
||
}
|
||
return;
|
||
}
|
||
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
|
||
// If the user tries to require a new symbol after document load,
|
||
// something has gone terribly wrong. Doing a document.write would
|
||
// wipe out the page. This does not apply to the CSP-compliant method
|
||
// of writing script tags.
|
||
if (doc.readyState == 'complete' &&
|
||
!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING) {
|
||
// Certain test frameworks load base.js multiple times, which tries
|
||
// to write deps.js each time. If that happens, just fail silently.
|
||
// These frameworks wipe the page between each load of base.js, so this
|
||
// is OK.
|
||
var isDeps = /\bdeps.js$/.test(this.path);
|
||
if (isDeps) {
|
||
controller.loaded();
|
||
return;
|
||
} else {
|
||
throw Error('Cannot write "' + this.path + '" after document load');
|
||
}
|
||
}
|
||
|
||
if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&
|
||
goog.isDocumentLoading_()) {
|
||
var key = goog.Dependency.registerCallback_(function(script) {
|
||
if (!goog.DebugLoader_.IS_OLD_IE_ || script.readyState == 'complete') {
|
||
goog.Dependency.unregisterCallback_(key);
|
||
controller.loaded();
|
||
}
|
||
});
|
||
|
||
var event =
|
||
goog.DebugLoader_.IS_OLD_IE_ ? 'onreadystatechange' : 'onload';
|
||
var defer = goog.Dependency.defer_ ? 'defer' : '';
|
||
doc.write(
|
||
'<script src="' + this.path + '" ' + event +
|
||
'="goog.Dependency.callback_(\'' + key +
|
||
'\', this)" type="text/javascript" ' + defer + '><' +
|
||
'/script>');
|
||
} else {
|
||
var scriptEl =
|
||
/** @type {!HTMLScriptElement} */ (doc.createElement('script'));
|
||
scriptEl.defer = goog.Dependency.defer_;
|
||
scriptEl.async = false;
|
||
scriptEl.type = 'text/javascript';
|
||
|
||
// If CSP nonces are used, propagate them to dynamically created scripts.
|
||
// This is necessary to allow nonce-based CSPs without 'strict-dynamic'.
|
||
var nonce = goog.getScriptNonce();
|
||
if (nonce) {
|
||
scriptEl.nonce = nonce;
|
||
}
|
||
|
||
if (goog.DebugLoader_.IS_OLD_IE_) {
|
||
// Execution order is not guaranteed on old IE, halt loading and write
|
||
// these scripts one at a time, after each loads.
|
||
controller.pause();
|
||
scriptEl.onreadystatechange = function() {
|
||
if (scriptEl.readyState == 'loaded' ||
|
||
scriptEl.readyState == 'complete') {
|
||
controller.loaded();
|
||
controller.resume();
|
||
}
|
||
};
|
||
} else {
|
||
scriptEl.onload = function() {
|
||
scriptEl.onload = null;
|
||
controller.loaded();
|
||
};
|
||
}
|
||
|
||
scriptEl.src = this.path;
|
||
doc.head.appendChild(scriptEl);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} path Absolute path of this script.
|
||
* @param {string} relativePath Path of this script relative to goog.basePath.
|
||
* @param {!Array<string>} requires goog symbols or relative paths to Closure
|
||
* this depends on.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @struct @constructor
|
||
* @extends {goog.Dependency}
|
||
*/
|
||
goog.Es6ModuleDependency = function(path, relativePath, requires, loadFlags) {
|
||
goog.Es6ModuleDependency.base(
|
||
this, 'constructor', path, relativePath, [], requires, loadFlags);
|
||
};
|
||
goog.inherits(goog.Es6ModuleDependency, goog.Dependency);
|
||
|
||
|
||
/** @override */
|
||
goog.Es6ModuleDependency.prototype.load = function(controller) {
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT) {
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {
|
||
controller.loaded();
|
||
} else {
|
||
controller.pause();
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (!goog.inHtmlDocument_()) {
|
||
goog.logToConsole_(
|
||
'Cannot use default debug loader outside of HTML documents.');
|
||
controller.pause();
|
||
return;
|
||
}
|
||
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
|
||
var dep = this;
|
||
|
||
// TODO(user): Does document.writing really speed up anything? Any
|
||
// difference between this and just waiting for interactive mode and then
|
||
// appending?
|
||
function write(src, contents) {
|
||
if (contents) {
|
||
doc.write(
|
||
'<script type="module" crossorigin>' + contents + '</' +
|
||
'script>');
|
||
} else {
|
||
doc.write(
|
||
'<script type="module" crossorigin src="' + src + '"></' +
|
||
'script>');
|
||
}
|
||
}
|
||
|
||
function append(src, contents) {
|
||
var scriptEl =
|
||
/** @type {!HTMLScriptElement} */ (doc.createElement('script'));
|
||
scriptEl.defer = true;
|
||
scriptEl.async = false;
|
||
scriptEl.type = 'module';
|
||
scriptEl.setAttribute('crossorigin', true);
|
||
|
||
// If CSP nonces are used, propagate them to dynamically created scripts.
|
||
// This is necessary to allow nonce-based CSPs without 'strict-dynamic'.
|
||
var nonce = goog.getScriptNonce();
|
||
if (nonce) {
|
||
scriptEl.nonce = nonce;
|
||
}
|
||
|
||
if (contents) {
|
||
scriptEl.textContent = contents;
|
||
} else {
|
||
scriptEl.src = src;
|
||
}
|
||
|
||
doc.head.appendChild(scriptEl);
|
||
}
|
||
|
||
var create;
|
||
|
||
if (goog.isDocumentLoading_()) {
|
||
create = write;
|
||
// We can ONLY call document.write if we are guaranteed that any
|
||
// non-module script tags document.written after this are deferred.
|
||
// Small optimization, in theory document.writing is faster.
|
||
goog.Dependency.defer_ = true;
|
||
} else {
|
||
create = append;
|
||
}
|
||
|
||
// Write 4 separate tags here:
|
||
// 1) Sets the module state at the correct time (just before execution).
|
||
// 2) A src node for this, which just hopefully lets the browser load it a
|
||
// little early (no need to parse #3).
|
||
// 3) Import the module and register it.
|
||
// 4) Clear the module state at the correct time. Guarnteed to run even
|
||
// if there is an error in the module (#3 will not run if there is an
|
||
// error in the module).
|
||
var beforeKey = goog.Dependency.registerCallback_(function() {
|
||
goog.Dependency.unregisterCallback_(beforeKey);
|
||
controller.setModuleState(dep.path, goog.ModuleType.ES6);
|
||
});
|
||
create(undefined, 'goog.Dependency.callback_("' + beforeKey + '")');
|
||
|
||
// TODO(user): Does this really speed up anything?
|
||
create(this.path, undefined);
|
||
|
||
var registerKey = goog.Dependency.registerCallback_(function(exports) {
|
||
goog.Dependency.unregisterCallback_(registerKey);
|
||
controller.registerEs6ModuleExports(dep.path, exports);
|
||
});
|
||
create(
|
||
undefined,
|
||
'import * as m from "' + this.path + '"; goog.Dependency.callback_("' +
|
||
registerKey + '", m)');
|
||
|
||
var afterKey = goog.Dependency.registerCallback_(function() {
|
||
goog.Dependency.unregisterCallback_(afterKey);
|
||
controller.clearModuleState();
|
||
controller.loaded();
|
||
});
|
||
create(undefined, 'goog.Dependency.callback_("' + afterKey + '")');
|
||
};
|
||
|
||
|
||
/**
|
||
* Superclass of any dependency that needs to be loaded into memory,
|
||
* transformed, and then eval'd (goog.modules and transpiled files).
|
||
*
|
||
* @param {string} path Absolute path of this script.
|
||
* @param {string} relativePath Path of this script relative to goog.basePath.
|
||
* @param {!Array<string>} provides goog.provided or goog.module symbols
|
||
* in this file.
|
||
* @param {!Array<string>} requires goog symbols or relative paths to Closure
|
||
* this depends on.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @struct @constructor @abstract
|
||
* @extends {goog.Dependency}
|
||
*/
|
||
goog.TransformedDependency = function(
|
||
path, relativePath, provides, requires, loadFlags) {
|
||
goog.TransformedDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
/** @private {?string} */
|
||
this.contents_ = null;
|
||
};
|
||
goog.inherits(goog.TransformedDependency, goog.Dependency);
|
||
|
||
|
||
/** @override */
|
||
goog.TransformedDependency.prototype.load = function(controller) {
|
||
if (!goog.global.CLOSURE_IMPORT_SCRIPT && goog.inHtmlDocument_() &&
|
||
goog.isDocumentLoading_()) {
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
// Required on some older browsers to load the contents in its own script
|
||
// tag. Otherwise the document.write acts like an eval apparently?
|
||
var dep = this;
|
||
|
||
var key = goog.Dependency.registerCallback_(function() {
|
||
goog.Dependency.unregisterCallback_(key);
|
||
dep.loadImpl_(controller);
|
||
});
|
||
|
||
doc.write(
|
||
'<script type="text/javascript">' +
|
||
goog.protectScriptTag_('goog.Dependency.callback_("' + key + '");') +
|
||
'</' +
|
||
'script>');
|
||
} else {
|
||
this.loadImpl_(controller);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {!goog.LoadController} controller
|
||
* @private
|
||
*/
|
||
goog.TransformedDependency.prototype.loadImpl_ = function(controller) {
|
||
this.contents_ = goog.loadFileSync_(this.path);
|
||
|
||
if (this.contents_) {
|
||
this.contents_ = this.transform(this.contents_);
|
||
if (this.contents_) {
|
||
this.contents_ += '\n//# sourceURL=' + this.path;
|
||
}
|
||
}
|
||
|
||
if (!this.contents_) {
|
||
// loadFileSync_ or transform are responsible. Assume they logged an
|
||
// error.
|
||
controller.pause();
|
||
return;
|
||
}
|
||
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT) {
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT('', this.contents_)) {
|
||
this.contents_ = null;
|
||
controller.loaded();
|
||
} else {
|
||
controller.pause();
|
||
}
|
||
return;
|
||
}
|
||
|
||
var dep = this;
|
||
var isEs6 = this.loadFlags['module'] == goog.ModuleType.ES6;
|
||
|
||
function load(shouldEval) {
|
||
if (!dep.contents_) {
|
||
return;
|
||
}
|
||
|
||
if (isEs6) {
|
||
controller.setModuleState(dep.path, goog.ModuleType.ES6);
|
||
}
|
||
|
||
try {
|
||
var contents = dep.contents_;
|
||
dep.contents_ = null;
|
||
if (shouldEval) {
|
||
goog.globalEval(contents);
|
||
} else {
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
doc.write(
|
||
'<script type="text/javascript">' +
|
||
goog.protectScriptTag_(contents) + '</' +
|
||
'script>');
|
||
}
|
||
} finally {
|
||
if (isEs6) {
|
||
controller.clearModuleState();
|
||
}
|
||
}
|
||
|
||
if (isEs6) {
|
||
// Due to circular dependencies this may not be available for require
|
||
// right now.
|
||
goog.global['$jscomp']['require']['ensure']([dep.path], function() {
|
||
controller.registerEs6ModuleExports(
|
||
dep.path, goog.global['$jscomp']['require'](dep.path));
|
||
});
|
||
}
|
||
|
||
controller.loaded();
|
||
}
|
||
|
||
var pending = controller.pending();
|
||
// If one thing is pending it is this.
|
||
if (pending.length > 1 && goog.DebugLoader_.IS_OLD_IE_) {
|
||
// If anything else is loading we need to lazy load due to bugs in old IE.
|
||
// Do not pause here; it breaks old IE as well.
|
||
controller.defer(function() {
|
||
load(true);
|
||
});
|
||
return;
|
||
}
|
||
|
||
if (isEs6 && goog.inHtmlDocument_() && goog.isDocumentLoading_()) {
|
||
// TODO(user): Externs are missing onreadystatechange for
|
||
// HTMLDocument.
|
||
/** @type {?} */
|
||
var doc = goog.global.document;
|
||
// Transpiled ES6 modules still need to load like regular ES6 modules,
|
||
// aka only after the document is interactive.
|
||
controller.pause();
|
||
var oldCallback = doc.onreadystatechange;
|
||
doc.onreadystatechange = function() {
|
||
if (doc.attachEvent ? doc.readyState == 'complete' :
|
||
doc.readyState == 'interactive') {
|
||
doc.onreadystatechange = oldCallback;
|
||
load(true);
|
||
controller.resume();
|
||
}
|
||
if (goog.isFunction(oldCallback)) {
|
||
oldCallback.apply(undefined, arguments);
|
||
}
|
||
};
|
||
} else {
|
||
// Always eval on old IE.
|
||
load(
|
||
goog.DebugLoader_.IS_OLD_IE_ || !goog.inHtmlDocument_() ||
|
||
!goog.isDocumentLoading_());
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} contents
|
||
* @return {string}
|
||
* @abstract
|
||
*/
|
||
goog.TransformedDependency.prototype.transform = function(contents) {};
|
||
|
||
|
||
/**
|
||
* Any non-goog.module dependency which needs to be transpiled before eval.
|
||
*
|
||
* @param {string} path Absolute path of this script.
|
||
* @param {string} relativePath Path of this script relative to goog.basePath.
|
||
* @param {!Array<string>} provides goog.provided or goog.module symbols
|
||
* in this file.
|
||
* @param {!Array<string>} requires goog symbols or relative paths to Closure
|
||
* this depends on.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @param {!goog.Transpiler} transpiler
|
||
* @struct @constructor
|
||
* @extends {goog.TransformedDependency}
|
||
*/
|
||
goog.TranspiledDependency = function(
|
||
path, relativePath, provides, requires, loadFlags, transpiler) {
|
||
goog.TranspiledDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
/** @protected @const*/
|
||
this.transpiler = transpiler;
|
||
};
|
||
goog.inherits(goog.TranspiledDependency, goog.TransformedDependency);
|
||
|
||
|
||
/** @override */
|
||
goog.TranspiledDependency.prototype.transform = function(contents) {
|
||
return this.transpiler.transpile(contents, this.path);
|
||
};
|
||
|
||
|
||
/**
|
||
* A goog.module, transpiled or not. Will always perform some minimal
|
||
* transformation even when not transpiled to wrap in a goog.loadModule
|
||
* statement.
|
||
*
|
||
* @param {string} path Absolute path of this script.
|
||
* @param {string} relativePath Path of this script relative to goog.basePath.
|
||
* @param {!Array<string>} provides goog.provided or goog.module symbols
|
||
* in this file.
|
||
* @param {!Array<string>} requires goog symbols or relative paths to Closure
|
||
* this depends on.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @param {boolean} needsTranspile
|
||
* @param {!goog.Transpiler} transpiler
|
||
* @struct @constructor
|
||
* @extends {goog.TransformedDependency}
|
||
*/
|
||
goog.GoogModuleDependency = function(
|
||
path, relativePath, provides, requires, loadFlags, needsTranspile,
|
||
transpiler) {
|
||
goog.GoogModuleDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
/** @private @const */
|
||
this.needsTranspile_ = needsTranspile;
|
||
/** @private @const */
|
||
this.transpiler_ = transpiler;
|
||
};
|
||
goog.inherits(goog.GoogModuleDependency, goog.TransformedDependency);
|
||
|
||
|
||
/** @override */
|
||
goog.GoogModuleDependency.prototype.transform = function(contents) {
|
||
if (this.needsTranspile_) {
|
||
contents = this.transpiler_.transpile(contents, this.path);
|
||
}
|
||
|
||
if (!goog.LOAD_MODULE_USING_EVAL || !goog.isDef(goog.global.JSON)) {
|
||
return '' +
|
||
'goog.loadModule(function(exports) {' +
|
||
'"use strict";' + contents +
|
||
'\n' + // terminate any trailing single line comment.
|
||
';return exports' +
|
||
'}, "' + this.path + '");' +
|
||
'\n//# sourceURL=' + this.path + '\n';
|
||
} else {
|
||
return '' +
|
||
'goog.loadModule(' +
|
||
goog.global.JSON.stringify(
|
||
contents + '\n//# sourceURL=' + this.path + '\n') +
|
||
', "' + this.path + '");';
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Whether the browser is IE9 or earlier, which needs special handling
|
||
* for deferred modules.
|
||
* @const @private {boolean}
|
||
*/
|
||
goog.DebugLoader_.IS_OLD_IE_ =
|
||
!!(!goog.global.atob && goog.global.document && goog.global.document.all);
|
||
|
||
|
||
/**
|
||
* @param {string} relPath
|
||
* @param {!Array<string>|undefined} provides
|
||
* @param {!Array<string>} requires
|
||
* @param {boolean|!Object<string>=} opt_loadFlags
|
||
* @see goog.addDependency
|
||
*/
|
||
goog.DebugLoader_.prototype.addDependency = function(
|
||
relPath, provides, requires, opt_loadFlags) {
|
||
provides = provides || [];
|
||
relPath = relPath.replace(/\\/g, '/');
|
||
var path = goog.normalizePath_(goog.basePath + relPath);
|
||
if (!opt_loadFlags || typeof opt_loadFlags === 'boolean') {
|
||
opt_loadFlags = opt_loadFlags ? {'module': goog.ModuleType.GOOG} : {};
|
||
}
|
||
var dep = this.factory_.createDependency(
|
||
path, relPath, provides, requires, opt_loadFlags,
|
||
goog.transpiler_.needsTranspile(
|
||
opt_loadFlags['lang'] || 'es3', opt_loadFlags['module']));
|
||
this.dependencies_[path] = dep;
|
||
for (var i = 0; i < provides.length; i++) {
|
||
this.idToPath_[provides[i]] = path;
|
||
}
|
||
this.idToPath_[relPath] = path;
|
||
};
|
||
|
||
/**
|
||
* Creates goog.Dependency instances for the debug loader to load.
|
||
*
|
||
* Should be overridden to have the debug loader use custom subclasses of
|
||
* goog.Dependency.
|
||
*
|
||
* @param {!goog.Transpiler} transpiler
|
||
* @struct @constructor
|
||
*/
|
||
goog.DependencyFactory = function(transpiler) {
|
||
/** @protected @const */
|
||
this.transpiler = transpiler;
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} path Absolute path of the file.
|
||
* @param {string} relativePath Path relative to closure’s base.js.
|
||
* @param {!Array<string>} provides Array of provided goog.provide/module ids.
|
||
* @param {!Array<string>} requires Array of required goog.provide/module /
|
||
* relative ES6 module paths.
|
||
* @param {!Object<string, string>} loadFlags
|
||
* @param {boolean} needsTranspile True if the file needs to be transpiled
|
||
* per the goog.Transpiler.
|
||
* @return {!goog.Dependency}
|
||
*/
|
||
goog.DependencyFactory.prototype.createDependency = function(
|
||
path, relativePath, provides, requires, loadFlags, needsTranspile) {
|
||
if (loadFlags['module'] == goog.ModuleType.ES6) {
|
||
throw new Error(
|
||
'ES6 modules are not currently supported by the debug loader.');
|
||
}
|
||
|
||
if (loadFlags['module'] == goog.ModuleType.GOOG) {
|
||
return new goog.GoogModuleDependency(
|
||
path, relativePath, provides, requires, loadFlags, needsTranspile,
|
||
this.transpiler);
|
||
} else if (needsTranspile) {
|
||
return new goog.TranspiledDependency(
|
||
path, relativePath, provides, requires, loadFlags, this.transpiler);
|
||
} else {
|
||
if (loadFlags['module'] == goog.ModuleType.ES6) {
|
||
return new goog.Es6ModuleDependency(
|
||
path, relativePath, requires, loadFlags);
|
||
} else {
|
||
return new goog.Dependency(
|
||
path, relativePath, provides, requires, loadFlags);
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/** @private @const */
|
||
goog.debugLoader_ = new goog.DebugLoader_();
|
||
|
||
|
||
/**
|
||
* Loads the Closure Dependency file.
|
||
*
|
||
* Exposed a public function so CLOSURE_NO_DEPS can be set to false, base
|
||
* loaded, setDependencyFactory called, and then this called. i.e. allows
|
||
* custom loading of the deps file.
|
||
*/
|
||
goog.loadClosureDeps = function() {
|
||
goog.debugLoader_.loadClosureDeps();
|
||
};
|
||
|
||
|
||
/**
|
||
* Sets the dependency factory, which can be used to create custom
|
||
* goog.Dependency implementations to control how dependencies are loaded.
|
||
*
|
||
* Note: if you wish to call this function and provide your own implemnetation
|
||
* it is a wise idea to set CLOSURE_NO_DEPS to true, otherwise the dependency
|
||
* file and all of its goog.addDependency calls will use the default factory.
|
||
* You can call goog.loadClosureDeps to load the Closure dependency file
|
||
* later, after your factory is injected.
|
||
*
|
||
* @param {!goog.DependencyFactory} factory
|
||
*/
|
||
goog.setDependencyFactory = function(factory) {
|
||
goog.debugLoader_.setDependencyFactory(factory);
|
||
};
|
||
|
||
|
||
if (!goog.global.CLOSURE_NO_DEPS) {
|
||
goog.debugLoader_.loadClosureDeps();
|
||
}
|
||
|
||
|
||
/**
|
||
* Bootstraps the given namespaces and calls the callback once they are
|
||
* available either via goog.require. This is a replacement for using
|
||
* `goog.require` to bootstrap Closure Javascript. Previously a `goog.require`
|
||
* in an HTML file would guarantee that the require'd namespace was available
|
||
* in the next immediate script tag. With ES6 modules this no longer a
|
||
* guarantee.
|
||
*
|
||
* @param {!Array<string>} namespaces
|
||
* @param {function(): ?} callback Function to call once all the namespaces
|
||
* have loaded. Always called asynchronously.
|
||
*/
|
||
goog.bootstrap = function(namespaces, callback) {
|
||
goog.debugLoader_.bootstrap(namespaces, callback);
|
||
};
|
||
} |