3551 lines
112 KiB
JavaScript
3551 lines
112 KiB
JavaScript
/**
|
||
* @license
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* Copyright The Closure Library Authors.
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* SPDX-License-Identifier: Apache-2.0
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*/
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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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* @suppress {deprecated} Users cannot remove deprecated uses here.
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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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/**
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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 object.
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* https://www.ecma-international.org/ecma-262/9.0/index.html#sec-global-object
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*
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* More info on this implementation here:
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||
* https://docs.google.com/document/d/1NAeW4Wk7I7FV0Y2tcUFvQdGMc89k2vdgSXInw8_nvCI/edit
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||
*
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||
* @const
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* @suppress {undefinedVars} self won't be referenced unless `this` is falsy.
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* @type {!Global}
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*/
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goog.global =
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||
// Check `this` first for backwards compatibility.
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||
// Valid unless running as an ES module or in a function wrapper called
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// without setting `this` properly.
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||
// Note that base.js can't usefully be imported as an ES module, but it may
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// be compiled into bundles that are loadable as ES modules.
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this ||
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// https://developer.mozilla.org/en-US/docs/Web/API/Window/self
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// For in-page browser environments and workers.
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self;
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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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||
* Currently the Closure Compiler will only recognize very simple definitions of
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* this value when looking for values to apply to compiled code and ignore all
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||
* other references. Specifically, it looks the value defined at the variable
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* declaration, as with the example above.
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*
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* TODO(user): Improve the recognized definitions.
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*
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* @type {!Object<string, (string|number|boolean)>|null|undefined}
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*/
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goog.global.CLOSURE_DEFINES;
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||
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/**
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||
* Builds an object structure for the provided namespace path, ensuring that
|
||
* 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 The name of the object that this file defines.
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||
* @param {*=} object The object to expose at the end of the path.
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||
* @param {boolean=} overwriteImplicit If object is set and a previous call
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||
* implicitly constructed the namespace given by name, this parameter
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||
* controls whether object should overwrite the implicitly constructed
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||
* namespace or be merged into it. Defaults to false.
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||
* @param {?Object=} objectToExportTo The object to add the path to; if this
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* field is not specified, its value defaults to `goog.global`.
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* @private
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||
*/
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||
goog.exportPath_ = function(name, object, overwriteImplicit, objectToExportTo) {
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||
var parts = name.split('.');
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||
var cur = 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
|
||
// 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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||
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||
for (var part; parts.length && (part = parts.shift());) {
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||
if (!parts.length && object !== undefined) {
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||
if (!overwriteImplicit && goog.isObject(object) &&
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||
goog.isObject(cur[part])) {
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||
// Merge properties on object (the input parameter) with the existing
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||
// implicitly defined namespace, so as to not clobber previously
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// defined child namespaces.
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||
for (var prop in object) {
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||
if (object.hasOwnProperty(prop)) {
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||
cur[part][prop] = object[prop];
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||
}
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||
}
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||
} else {
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||
// Either there is no existing implicit namespace, or overwriteImplicit
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// is set to true, so directly assign object (the input parameter) to
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// the namespace.
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||
cur[part] = object;
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||
}
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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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||
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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 options or the
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||
* value set in the CLOSURE_DEFINES object. Returns the defined value so that it
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* can be used safely in modules. Note that the value type MUST be either
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* boolean, number, or string.
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||
*
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* @param {string} name The distinguished name to provide.
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||
* @param {T} defaultValue
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* @return {T} The defined value.
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* @template T
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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 (
|
||
defines &&
|
||
// Anti DOM-clobbering runtime check (b/37736576).
|
||
/** @type {?} */ (defines).nodeType === undefined &&
|
||
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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||
return value;
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||
};
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||
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||
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||
/**
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||
* @define {number} Integer year indicating the set of browser features that are
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||
* guaranteed to be present. This is defined to include exactly features that
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||
* work correctly on all "modern" browsers that are stable on January 1 of the
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* specified year. For example,
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* ```js
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||
* if (goog.FEATURESET_YEAR >= 2019) {
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||
* // use APIs known to be available on all major stable browsers Jan 1, 2019
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||
* } else {
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||
* // polyfill for older browsers
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||
* }
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||
* ```
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||
* This is intended to be the primary define for removing
|
||
* unnecessary browser compatibility code (such as ponyfills and workarounds),
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||
* and should inform the default value for most other defines:
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||
* ```js
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||
* const ASSUME_NATIVE_PROMISE =
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* goog.define('ASSUME_NATIVE_PROMISE', goog.FEATURESET_YEAR >= 2016);
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||
* ```
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||
*
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||
* The default assumption is that IE9 is the lowest supported browser, which was
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* first available Jan 1, 2012.
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*
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||
* TODO(user): Reference more thorough documentation when it's available.
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*/
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goog.FEATURESET_YEAR = goog.define('goog.FEATURESET_YEAR', 2012);
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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
|
||
* by specifying --define goog.DEBUG=false to the Closure Compiler aka
|
||
* JSCompiler. For example, most toString() methods should be declared inside an
|
||
* "if (goog.DEBUG)" conditional because they are generally used for debugging
|
||
* purposes and it is difficult for the JSCompiler to statically determine
|
||
* whether they are used.
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||
*/
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||
goog.DEBUG = goog.define('goog.DEBUG', true);
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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
|
||
* can specify this value by "--define goog.LOCALE=<locale_name>" as a compiler
|
||
* option.
|
||
*
|
||
* 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
|
||
* lowercase, Language Script - Capitalized, Region - UPPERCASE.
|
||
* There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.
|
||
*
|
||
* See more info about locale codes here:
|
||
* http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers
|
||
*
|
||
* For language codes you should use values defined by ISO 693-1. See it here
|
||
* 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
|
||
* be used instead of the new code (he).
|
||
*
|
||
*/
|
||
goog.LOCALE = goog.define('goog.LOCALE', 'en'); // default to en
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether this code is running on trusted sites.
|
||
*
|
||
* On untrusted sites, several native functions can be defined or overridden by
|
||
* external libraries like Prototype, Datejs, and JQuery and setting this flag
|
||
* to false forces closure to use its own implementations when possible.
|
||
*
|
||
* If your JavaScript can be loaded by a third party site and you are wary about
|
||
* relying on non-standard implementations, specify
|
||
* "--define goog.TRUSTED_SITE=false" to the compiler.
|
||
*/
|
||
goog.TRUSTED_SITE = goog.define('goog.TRUSTED_SITE', true);
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether code that calls {@link goog.setTestOnly} should
|
||
* be disallowed in the compilation unit.
|
||
*/
|
||
goog.DISALLOW_TEST_ONLY_CODE =
|
||
goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG);
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether to use a Chrome app CSP-compliant method for
|
||
* loading scripts via goog.require. @see appendScriptSrcNode_.
|
||
*/
|
||
goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING =
|
||
goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false);
|
||
|
||
|
||
/**
|
||
* Defines a namespace in Closure.
|
||
*
|
||
* A namespace may only be defined once in a codebase. It may be defined using
|
||
* goog.provide() or goog.module().
|
||
*
|
||
* 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.
|
||
*
|
||
* @see goog.require
|
||
* @see goog.module
|
||
* @param {string} name Namespace provided by this file in the form
|
||
* "goog.package.part".
|
||
* deprecated Use goog.module (see b/159289405)
|
||
*/
|
||
goog.provide = function(name) {
|
||
if (goog.isInModuleLoader_()) {
|
||
throw new Error('goog.provide cannot 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.');
|
||
}
|
||
}
|
||
|
||
goog.constructNamespace_(name);
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} name Namespace provided by this file in the form
|
||
* "goog.package.part".
|
||
* @param {?Object=} object The object to embed in the namespace.
|
||
* @param {boolean=} overwriteImplicit If object is set and a previous call
|
||
* implicitly constructed the namespace given by name, this parameter
|
||
* controls whether opt_obj should overwrite the implicitly constructed
|
||
* namespace or be merged into it. Defaults to false.
|
||
* @private
|
||
*/
|
||
goog.constructNamespace_ = function(name, object, overwriteImplicit) {
|
||
if (!COMPILED) {
|
||
delete goog.implicitNamespaces_[name];
|
||
|
||
var namespace = name;
|
||
while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {
|
||
if (goog.getObjectByName(namespace)) {
|
||
break;
|
||
}
|
||
goog.implicitNamespaces_[namespace] = true;
|
||
}
|
||
}
|
||
|
||
goog.exportPath_(name, object, overwriteImplicit);
|
||
};
|
||
|
||
|
||
/**
|
||
* 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}$/;
|
||
|
||
|
||
/**
|
||
* Returns CSP nonce, if set for any script tag.
|
||
* @param {?Window=} opt_window The window context used to retrieve the nonce.
|
||
* Defaults to global context.
|
||
* @return {string} CSP nonce or empty string if no nonce is present.
|
||
* @private
|
||
*/
|
||
goog.getScriptNonce_ = function(opt_window) {
|
||
var doc = (opt_window || goog.global).document;
|
||
var script = doc.querySelector && doc.querySelector('script[nonce]');
|
||
if (script) {
|
||
// Try to get the nonce from the IDL property first, because browsers that
|
||
// implement additional nonce protection features (currently only Chrome) to
|
||
// prevent nonce stealing via CSS do not expose the nonce via attributes.
|
||
// See https://github.com/whatwg/html/issues/2369
|
||
var nonce = script['nonce'] || script.getAttribute('nonce');
|
||
if (nonce && goog.NONCE_PATTERN_.test(nonce)) {
|
||
return nonce;
|
||
}
|
||
}
|
||
return '';
|
||
};
|
||
|
||
|
||
/**
|
||
* Module identifier validation regexp.
|
||
* Note: This is a conservative check, it is very possible to be more lenient,
|
||
* the primary exclusion here is "/" and "\" and a leading ".", these
|
||
* restrictions are intended to leave the door open for using goog.require
|
||
* with relative file paths rather than module identifiers.
|
||
* @private
|
||
*/
|
||
goog.VALID_MODULE_RE_ = /^[a-zA-Z_$][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 (typeof name !== 'string' || !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) {
|
||
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,
|
||
* type: ?goog.ModuleType
|
||
* }}
|
||
*/
|
||
goog.moduleLoaderState_ = null;
|
||
|
||
|
||
/**
|
||
* @private
|
||
* @return {boolean} Whether a goog.module or an es6 module 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() {
|
||
var inLoader = !!goog.moduleLoaderState_ &&
|
||
goog.moduleLoaderState_.type == goog.ModuleType.ES6;
|
||
|
||
if (inLoader) {
|
||
return true;
|
||
}
|
||
|
||
var jscomp = goog.global['$jscomp'];
|
||
|
||
if (jscomp) {
|
||
// jscomp may not have getCurrentModulePath if this is a compiled bundle
|
||
// that has some of the runtime, but not all of it. This can happen if
|
||
// optimizations are turned on so the unused runtime is removed but renaming
|
||
// and Closure pass are off (so $jscomp is still named $jscomp and the
|
||
// goog.provide/require calls still exist).
|
||
if (typeof jscomp.getCurrentModulePath != 'function') {
|
||
return false;
|
||
}
|
||
|
||
// Bundled ES6 module.
|
||
return !!jscomp.getCurrentModulePath();
|
||
}
|
||
|
||
return false;
|
||
};
|
||
|
||
|
||
/**
|
||
* 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;
|
||
};
|
||
|
||
|
||
/**
|
||
* Associates an ES6 module with a Closure module ID so that is available via
|
||
* goog.require. The associated ID acts like a goog.module ID - it does not
|
||
* create any global names, it is merely available via goog.require /
|
||
* goog.module.get / goog.forwardDeclare / goog.requireType. goog.require and
|
||
* goog.module.get will return the entire module as if it was import *'d. This
|
||
* allows Closure files to reference ES6 modules for the sake of migration.
|
||
*
|
||
* @param {string} namespace
|
||
* @suppress {missingProvide}
|
||
*/
|
||
goog.declareModuleId = function(namespace) {
|
||
if (!COMPILED) {
|
||
if (!goog.isInEs6ModuleLoader_()) {
|
||
throw new Error(
|
||
'goog.declareModuleId may only be called from ' +
|
||
'within an ES6 module');
|
||
}
|
||
if (goog.moduleLoaderState_ && goog.moduleLoaderState_.moduleName) {
|
||
throw new Error(
|
||
'goog.declareModuleId may only be called once per module.');
|
||
}
|
||
if (namespace in goog.loadedModules_) {
|
||
throw new Error(
|
||
'Module with namespace "' + namespace + '" already exists.');
|
||
}
|
||
}
|
||
if (goog.moduleLoaderState_) {
|
||
// Not bundled - debug loading.
|
||
goog.moduleLoaderState_.moduleName = namespace;
|
||
} else {
|
||
// Bundled - not debug loading, no module loader state.
|
||
var jscomp = goog.global['$jscomp'];
|
||
if (!jscomp || typeof jscomp.getCurrentModulePath != 'function') {
|
||
throw new Error(
|
||
'Module with namespace "' + namespace +
|
||
'" has been loaded incorrectly.');
|
||
}
|
||
var exports = jscomp.require(jscomp.getCurrentModulePath());
|
||
goog.loadedModules_[namespace] = {
|
||
exports: exports,
|
||
type: goog.ModuleType.ES6,
|
||
moduleId: namespace
|
||
};
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* 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".
|
||
* @deprecated See go/noforwarddeclaration, Use `goog.requireType` instead.
|
||
*/
|
||
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.getObjectByName(name) != null);
|
||
};
|
||
|
||
/**
|
||
* 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 (cur == null) {
|
||
return null;
|
||
}
|
||
}
|
||
return cur;
|
||
};
|
||
|
||
|
||
/**
|
||
* 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.ENABLE_DEBUG_LOADER = goog.define('goog.ENABLE_DEBUG_LOADER', true);
|
||
|
||
|
||
/**
|
||
* @param {string} msg
|
||
* @private
|
||
*/
|
||
goog.logToConsole_ = function(msg) {
|
||
if (goog.global.console) {
|
||
goog.global.console['error'](msg);
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* 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} namespace Namespace (as was given in goog.provide,
|
||
* goog.module, or goog.declareModuleId) in the form
|
||
* "goog.package.part".
|
||
* @return {?} If called within a goog.module or ES6 module file, the associated
|
||
* namespace or module otherwise null.
|
||
*/
|
||
goog.require = function(namespace) {
|
||
if (!COMPILED) {
|
||
// Might need to lazy load on old IE.
|
||
if (goog.ENABLE_DEBUG_LOADER) {
|
||
goog.debugLoader_.requested(namespace);
|
||
}
|
||
|
||
// If the object already exists we do not need to do anything.
|
||
if (goog.isProvided_(namespace)) {
|
||
if (goog.isInModuleLoader_()) {
|
||
return goog.module.getInternal_(namespace);
|
||
}
|
||
} else if (goog.ENABLE_DEBUG_LOADER) {
|
||
var moduleLoaderState = goog.moduleLoaderState_;
|
||
goog.moduleLoaderState_ = null;
|
||
try {
|
||
goog.debugLoader_.load_(namespace);
|
||
} finally {
|
||
goog.moduleLoaderState_ = moduleLoaderState;
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* Requires a symbol for its type information. This is an indication to the
|
||
* compiler that the symbol may appear in type annotations, yet it is not
|
||
* referenced at runtime.
|
||
*
|
||
* When called within a goog.module or ES6 module file, the return value may be
|
||
* assigned to or destructured into a variable, but it may not be otherwise used
|
||
* in code outside of a type annotation.
|
||
*
|
||
* Note that all calls to goog.requireType will be stripped by the compiler.
|
||
*
|
||
* @param {string} namespace Namespace (as was given in goog.provide,
|
||
* goog.module, or goog.declareModuleId) in the form
|
||
* "goog.package.part".
|
||
* @return {?}
|
||
*/
|
||
goog.requireType = function(namespace) {
|
||
// Return an empty object so that single-level destructuring of the return
|
||
// value doesn't crash at runtime when using the debug loader. Multi-level
|
||
// destructuring isn't supported.
|
||
return {};
|
||
};
|
||
|
||
|
||
/**
|
||
* 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;
|
||
|
||
|
||
/**
|
||
* 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.
|
||
* @deprecated Use "@abstract" annotation instead of goog.abstractMethod in new
|
||
* code. See
|
||
* https://github.com/google/closure-compiler/wiki/@abstract-classes-and-methods
|
||
*/
|
||
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.
|
||
// Delcare type to avoid conformance violations that ctor.instance_ is unknown
|
||
/** @type {undefined|!Object} @suppress {underscore} */
|
||
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;
|
||
}
|
||
// Cast to avoid conformance violations that ctor.instance_ is unknown
|
||
return /** @type {!Object|undefined} */ (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.LOAD_MODULE_USING_EVAL = goog.define('goog.LOAD_MODULE_USING_EVAL', true);
|
||
|
||
|
||
/**
|
||
* @define {boolean} Whether the exports of goog.modules should be sealed when
|
||
* possible.
|
||
*/
|
||
goog.SEAL_MODULE_EXPORTS = 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(sdh): 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.TRANSPILE = goog.define('goog.TRANSPILE', 'detect');
|
||
|
||
/**
|
||
* @define {boolean} If true assume that ES modules have already been
|
||
* transpiled by the jscompiler (in the same way that transpile.js would
|
||
* transpile them - to jscomp modules). Useful only for servers that wish to use
|
||
* the debug loader and transpile server side. Thus this is only respected if
|
||
* goog.TRANSPILE is "never".
|
||
*/
|
||
goog.ASSUME_ES_MODULES_TRANSPILED =
|
||
goog.define('goog.ASSUME_ES_MODULES_TRANSPILED', false);
|
||
|
||
|
||
/**
|
||
* @define {string} Trusted Types policy name. If non-empty then Closure will
|
||
* use Trusted Types.
|
||
*/
|
||
goog.TRUSTED_TYPES_POLICY_NAME =
|
||
goog.define('goog.TRUSTED_TYPES_POLICY_NAME', 'goog');
|
||
|
||
|
||
/**
|
||
* @package {?boolean}
|
||
* Visible for testing.
|
||
*/
|
||
goog.hasBadLetScoping = null;
|
||
|
||
|
||
/**
|
||
* @param {function(?):?|string} moduleDef The module definition.
|
||
*/
|
||
goog.loadModule = function(moduleDef) {
|
||
// 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
|
||
};
|
||
var origExports = {};
|
||
var exports = origExports;
|
||
if (typeof moduleDef === 'function') {
|
||
exports = moduleDef.call(undefined, exports);
|
||
} else if (typeof moduleDef === 'string') {
|
||
exports = goog.loadModuleFromSource_.call(undefined, exports, moduleDef);
|
||
} else {
|
||
throw new Error('Invalid module definition');
|
||
}
|
||
|
||
var moduleName = goog.moduleLoaderState_.moduleName;
|
||
if (typeof moduleName === 'string' && moduleName) {
|
||
// Don't seal legacy namespaces as they may be used as a parent of
|
||
// another namespace
|
||
if (goog.moduleLoaderState_.declareLegacyNamespace) {
|
||
// Whether exports was overwritten via default export assignment.
|
||
// This is important for legacy namespaces as it dictates whether
|
||
// previously a previously loaded implicit namespace should be clobbered
|
||
// or not.
|
||
var isDefaultExport = origExports !== exports;
|
||
goog.constructNamespace_(moduleName, exports, isDefaultExport);
|
||
} 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;
|
||
} else {
|
||
throw new Error('Invalid module name \"' + moduleName + '\"');
|
||
}
|
||
} finally {
|
||
goog.moduleLoaderState_ = previousState;
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @private @const
|
||
*/
|
||
goog.loadModuleFromSource_ =
|
||
/** @type {function(!Object, string):?} */ (function(exports) {
|
||
// NOTE: we avoid declaring parameters or local variables here to avoid
|
||
// masking globals or leaking values into the module definition.
|
||
'use strict';
|
||
eval(goog.CLOSURE_EVAL_PREFILTER_.createScript(arguments[1]));
|
||
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;
|
||
}
|
||
}
|
||
};
|
||
|
||
//==============================================================================
|
||
// 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') {
|
||
return s;
|
||
}
|
||
|
||
if (!value) {
|
||
return 'null';
|
||
}
|
||
|
||
if (Array.isArray(value)) {
|
||
return 'array';
|
||
}
|
||
return s;
|
||
};
|
||
|
||
|
||
/**
|
||
* 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 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.
|
||
return Object.prototype.hasOwnProperty.call(obj, goog.UID_PROPERTY_) &&
|
||
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;
|
||
|
||
|
||
/**
|
||
* 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();
|
||
}
|
||
if (typeof Map !== 'undefined' && obj instanceof Map) {
|
||
return new Map(obj);
|
||
} else if (typeof Set !== 'undefined' && obj instanceof Set) {
|
||
return new Set(obj);
|
||
}
|
||
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.
|
||
* @deprecated use `=> {}` or Function.prototype.bind instead.
|
||
*/
|
||
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(/** @type {?} */ (this), newArgs);
|
||
};
|
||
};
|
||
|
||
|
||
/**
|
||
* @return {number} An integer value representing the number of milliseconds
|
||
* between midnight, January 1, 1970 and the current time.
|
||
* @deprecated Use Date.now
|
||
*/
|
||
goog.now = function() {
|
||
return Date.now();
|
||
};
|
||
|
||
|
||
/**
|
||
* Evals JavaScript in the global scope.
|
||
*
|
||
* Throws an exception if neither execScript or eval is defined.
|
||
* @param {string|!TrustedScript} script JavaScript string.
|
||
*/
|
||
goog.globalEval = function(script) {
|
||
(0, eval)(script);
|
||
};
|
||
|
||
|
||
/**
|
||
* 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;
|
||
}
|
||
|
||
/**
|
||
* Options bag type for `goog.getMsg()` third argument.
|
||
*
|
||
* It is important to note that these options need to be known at compile time,
|
||
* so they must always be provided to `goog.getMsg()` as an actual object
|
||
* literal in the function call. Otherwise, closure-compiler will report an
|
||
* error.
|
||
* @record
|
||
*/
|
||
goog.GetMsgOptions = function() {};
|
||
|
||
/**
|
||
* If `true`, escape '<' in the message string to '<'.
|
||
*
|
||
* Used by Closure Templates where the generated code size and performance is
|
||
* critical which is why {@link goog.html.SafeHtmlFormatter} is not used.
|
||
* The value must be literal `true` or `false`.
|
||
* @type {boolean|undefined}
|
||
*/
|
||
goog.GetMsgOptions.prototype.html;
|
||
|
||
/**
|
||
* If `true`, unescape common html entities: >, <, ', " and
|
||
* &.
|
||
*
|
||
* Used for messages not in HTML context, such as with the `textContent`
|
||
* property.
|
||
* The value must be literal `true` or `false`.
|
||
* @type {boolean|undefined}
|
||
*/
|
||
goog.GetMsgOptions.prototype.unescapeHtmlEntities;
|
||
|
||
/**
|
||
* Associates placeholder names with strings showing how their values are
|
||
* obtained.
|
||
*
|
||
* This field is intended for use in automatically generated JS code.
|
||
* Human-written code should use meaningful placeholder names instead.
|
||
*
|
||
* closure-compiler uses this as the contents of the `<ph>` tag in the
|
||
* XMB file it generates or defaults to `-` for historical reasons.
|
||
*
|
||
* Must be an object literal.
|
||
* Ignored at runtime.
|
||
* Keys are placeholder names.
|
||
* Values are string literals indicating how the value is obtained.
|
||
* Typically this is a snippet of source code.
|
||
* @type {!Object<string, string>|undefined}
|
||
*/
|
||
goog.GetMsgOptions.prototype.original_code;
|
||
|
||
/**
|
||
* Associates placeholder names with example values.
|
||
*
|
||
* closure-compiler uses this as the contents of the `<ex>` tag in the
|
||
* XMB file it generates or defaults to `-` for historical reasons.
|
||
*
|
||
* Must be an object literal.
|
||
* Ignored at runtime.
|
||
* Keys are placeholder names.
|
||
* Values are string literals containing example placeholder values.
|
||
* (e.g. "George McFly" for a name placeholder)
|
||
* @type {!Object<string, string>|undefined}
|
||
*/
|
||
goog.GetMsgOptions.prototype.example;
|
||
|
||
/**
|
||
* 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.
|
||
* @param {!goog.GetMsgOptions=} opt_options see `goog.GetMsgOptions`
|
||
* @return {string} message with placeholders filled.
|
||
*/
|
||
goog.getMsg = function(str, opt_values, opt_options) {
|
||
if (opt_options && opt_options.html) {
|
||
// Note that '&' is not replaced because the translation can contain HTML
|
||
// entities.
|
||
str = str.replace(/</g, '<');
|
||
}
|
||
if (opt_options && opt_options.unescapeHtmlEntities) {
|
||
// Note that "&" must be the last to avoid "creating" new entities.
|
||
str = str.replace(/</g, '<')
|
||
.replace(/>/g, '>')
|
||
.replace(/'/g, '\'')
|
||
.replace(/"/g, '"')
|
||
.replace(/&/g, '&');
|
||
}
|
||
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=} objectToExportTo The object to add the path to; default
|
||
* is goog.global.
|
||
*/
|
||
goog.exportSymbol = function(publicPath, object, objectToExportTo) {
|
||
goog.exportPath_(
|
||
publicPath, object, /* overwriteImplicit= */ true, 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.
|
||
* @deprecated Use ECMAScript class syntax instead.
|
||
*/
|
||
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);
|
||
};
|
||
};
|
||
|
||
|
||
/**
|
||
* 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").
|
||
* @deprecated Use goog.module instead.
|
||
*/
|
||
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.
|
||
* @deprecated Use ECMAScript class syntax instead.
|
||
*/
|
||
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.defineClass.SEAL_CLASS_INSTANCES =
|
||
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;
|
||
}
|
||
|
||
// NOTE: The sealing behavior has been removed
|
||
|
||
/**
|
||
* @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_];
|
||
|
||
return instance;
|
||
};
|
||
|
||
return wrappedCtr;
|
||
};
|
||
|
||
|
||
|
||
// 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];
|
||
}
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Returns the parameter.
|
||
* @param {string} s
|
||
* @return {string}
|
||
* @private
|
||
*/
|
||
goog.identity_ = function(s) {
|
||
return s;
|
||
};
|
||
|
||
|
||
/**
|
||
* Creates Trusted Types policy if Trusted Types are supported by the browser.
|
||
* The policy just blesses any string as a Trusted Type. It is not visibility
|
||
* restricted because anyone can also call trustedTypes.createPolicy directly.
|
||
* However, the allowed names should be restricted by a HTTP header and the
|
||
* reference to the created policy should be visibility restricted.
|
||
* @param {string} name
|
||
* @return {?TrustedTypePolicy}
|
||
*/
|
||
goog.createTrustedTypesPolicy = function(name) {
|
||
var policy = null;
|
||
var policyFactory = goog.global.trustedTypes;
|
||
if (!policyFactory || !policyFactory.createPolicy) {
|
||
return policy;
|
||
}
|
||
// trustedTypes.createPolicy throws if called with a name that is already
|
||
// registered, even in report-only mode. Until the API changes, catch the
|
||
// error not to break the applications functionally. In such case, the code
|
||
// will fall back to using regular Safe Types.
|
||
// TODO(koto): Remove catching once createPolicy API stops throwing.
|
||
try {
|
||
policy = policyFactory.createPolicy(name, {
|
||
createHTML: goog.identity_,
|
||
createScript: goog.identity_,
|
||
createScriptURL: goog.identity_
|
||
});
|
||
} catch (e) {
|
||
goog.logToConsole_(e.message);
|
||
}
|
||
return policy;
|
||
};
|
||
|
||
// 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 the current browser is Edge, based on the user
|
||
* agent. This matches only pre-Chromium Edge.
|
||
* @see https://docs.microsoft.com/en-us/microsoft-edge/web-platform/user-agent-string
|
||
* @return {boolean} True if the current browser is Edge.
|
||
* @private
|
||
*/
|
||
goog.isEdge_ = function() {
|
||
var userAgent = goog.global.navigator && goog.global.navigator.userAgent ?
|
||
goog.global.navigator.userAgent :
|
||
'';
|
||
var edgeRe = /Edge\/(\d+)(\.\d)*/i;
|
||
return !!userAgent.match(edgeRe);
|
||
};
|
||
|
||
|
||
/**
|
||
* 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.global.CLOSURE_BASE_PATH != undefined &&
|
||
// Anti DOM-clobbering runtime check (b/37736576).
|
||
typeof goog.global.CLOSURE_BASE_PATH === 'string') {
|
||
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.slice(l - 7, l) == 'base.js') {
|
||
goog.basePath = src.slice(0, l - 7);
|
||
return;
|
||
}
|
||
}
|
||
};
|
||
|
||
goog.findBasePath_();
|
||
|
||
/**
|
||
* 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();
|
||
/** @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, [], [], {}));
|
||
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} namespace
|
||
* @private
|
||
*/
|
||
goog.DebugLoader_.prototype.load_ = function(namespace) {
|
||
if (!this.getPathFromDeps_(namespace)) {
|
||
var errorMessage = 'goog.require could not find: ' + namespace;
|
||
goog.logToConsole_(errorMessage);
|
||
} else {
|
||
var loader = this;
|
||
|
||
var deps = [];
|
||
|
||
/** @param {string} namespace */
|
||
var visit = function(namespace) {
|
||
var path = loader.getPathFromDeps_(namespace);
|
||
|
||
if (!path) {
|
||
throw new Error('Bad dependency path or symbol: ' + namespace);
|
||
}
|
||
|
||
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(namespace);
|
||
|
||
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 {goog.ModuleType} type
|
||
*/
|
||
setModuleState: function(type) {
|
||
goog.moduleLoaderState_ = {
|
||
type: type,
|
||
moduleName: '',
|
||
declareLegacyNamespace: false
|
||
};
|
||
},
|
||
/** @type {function(string, string, string=)} */
|
||
registerEs6ModuleExports: function(
|
||
path, exports, opt_closureNamespace) {
|
||
if (opt_closureNamespace) {
|
||
goog.loadedModules_[opt_closureNamespace] = {
|
||
exports: exports,
|
||
type: goog.ModuleType.ES6,
|
||
moduleId: opt_closureNamespace || ''
|
||
};
|
||
}
|
||
},
|
||
/** @type {function(string, ?)} */
|
||
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
|
||
* @param {string=} opt_closureNamespace Closure namespace to associate with
|
||
* this module.
|
||
*/
|
||
goog.LoadController.prototype.registerEs6ModuleExports = function(
|
||
path, exports, opt_closureNamespace) {};
|
||
|
||
|
||
/**
|
||
* Sets the current module state.
|
||
*
|
||
* @param {goog.ModuleType} type Type of module.
|
||
*/
|
||
goog.LoadController.prototype.setModuleState = function(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 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_ = [];
|
||
};
|
||
|
||
|
||
/**
|
||
* @return {string} The pathname part of this dependency's path if it is a
|
||
* URI.
|
||
*/
|
||
goog.Dependency.prototype.getPathName = function() {
|
||
var pathName = this.path;
|
||
var protocolIndex = pathName.indexOf('://');
|
||
if (protocolIndex >= 0) {
|
||
pathName = pathName.substring(protocolIndex + 3);
|
||
var slashIndex = pathName.indexOf('/');
|
||
if (slashIndex >= 0) {
|
||
pathName = pathName.substring(slashIndex + 1);
|
||
}
|
||
}
|
||
return pathName;
|
||
};
|
||
|
||
|
||
/**
|
||
* @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 setting 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');
|
||
}
|
||
}
|
||
|
||
var nonce = goog.getScriptNonce_();
|
||
if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&
|
||
goog.isDocumentLoading_()) {
|
||
var key;
|
||
var callback = function(script) {
|
||
if (script.readyState && script.readyState != 'complete') {
|
||
script.onload = callback;
|
||
return;
|
||
}
|
||
goog.Dependency.unregisterCallback_(key);
|
||
controller.loaded();
|
||
};
|
||
key = goog.Dependency.registerCallback_(callback);
|
||
|
||
var defer = goog.Dependency.defer_ ? ' defer' : '';
|
||
var nonceAttr = nonce ? ' nonce="' + nonce + '"' : '';
|
||
var script = '<script src="' + this.path + '"' + nonceAttr + defer +
|
||
' id="script-' + key + '"><\/script>';
|
||
|
||
script += '<script' + nonceAttr + '>';
|
||
|
||
if (goog.Dependency.defer_) {
|
||
script += 'document.getElementById(\'script-' + key +
|
||
'\').onload = function() {\n' +
|
||
' goog.Dependency.callback_(\'' + key + '\', this);\n' +
|
||
'};\n';
|
||
} else {
|
||
script += 'goog.Dependency.callback_(\'' + key +
|
||
'\', document.getElementById(\'script-' + key + '\'));';
|
||
}
|
||
|
||
script += '<\/script>';
|
||
|
||
doc.write(
|
||
goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createHTML(script) :
|
||
script);
|
||
} else {
|
||
var scriptEl =
|
||
/** @type {!HTMLScriptElement} */ (doc.createElement('script'));
|
||
scriptEl.defer = goog.Dependency.defer_;
|
||
scriptEl.async = false;
|
||
|
||
// If CSP nonces are used, propagate them to dynamically created scripts.
|
||
// This is necessary to allow nonce-based CSPs without 'strict-dynamic'.
|
||
if (nonce) {
|
||
scriptEl.nonce = nonce;
|
||
}
|
||
|
||
scriptEl.onload = function() {
|
||
scriptEl.onload = null;
|
||
controller.loaded();
|
||
};
|
||
|
||
scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createScriptURL(this.path) :
|
||
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>} provides Should be an empty array.
|
||
* TODO(johnplaisted) add support for adding closure namespaces to ES6
|
||
* modules for interop purposes.
|
||
* @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, provides, requires, loadFlags) {
|
||
goog.Es6ModuleDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
};
|
||
goog.inherits(goog.Es6ModuleDependency, goog.Dependency);
|
||
|
||
|
||
/**
|
||
* @override
|
||
* @param {!goog.LoadController} controller
|
||
*/
|
||
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(johnplaisted): Does document.writing really speed up anything? Any
|
||
// difference between this and just waiting for interactive mode and then
|
||
// appending?
|
||
function write(src, contents) {
|
||
var nonceAttr = '';
|
||
var nonce = goog.getScriptNonce_();
|
||
if (nonce) {
|
||
nonceAttr = ' nonce="' + nonce + '"';
|
||
}
|
||
|
||
if (contents) {
|
||
var script = '<script type="module" crossorigin' + nonceAttr + '>' +
|
||
contents + '</' +
|
||
'script>';
|
||
doc.write(
|
||
goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createHTML(script) :
|
||
script);
|
||
} else {
|
||
var script = '<script type="module" crossorigin src="' + src + '"' +
|
||
nonceAttr + '></' +
|
||
'script>';
|
||
doc.write(
|
||
goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createHTML(script) :
|
||
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.text = goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createScript(contents) :
|
||
contents;
|
||
} else {
|
||
scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createScriptURL(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. Guaranteed 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(goog.ModuleType.ES6);
|
||
});
|
||
create(undefined, 'goog.Dependency.callback_("' + beforeKey + '")');
|
||
|
||
// TODO(johnplaisted): 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, goog.moduleLoaderState_.moduleName);
|
||
});
|
||
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;
|
||
|
||
/**
|
||
* Whether to lazily make the synchronous XHR (when goog.require'd) or make
|
||
* the synchronous XHR when initially loading. On FireFox 61 there is a bug
|
||
* where an ES6 module cannot make a synchronous XHR (rather, it can, but if
|
||
* it does then no other ES6 modules will load after).
|
||
*
|
||
* tl;dr we lazy load due to bugs on older browsers and eager load due to
|
||
* bugs on newer ones.
|
||
*
|
||
* https://bugzilla.mozilla.org/show_bug.cgi?id=1477090
|
||
*
|
||
* @private @const {boolean}
|
||
*/
|
||
this.lazyFetch_ = !goog.inHtmlDocument_() ||
|
||
!('noModule' in goog.global.document.createElement('script'));
|
||
};
|
||
goog.inherits(goog.TransformedDependency, goog.Dependency);
|
||
|
||
|
||
/**
|
||
* @override
|
||
* @param {!goog.LoadController} controller
|
||
*/
|
||
goog.TransformedDependency.prototype.load = function(controller) {
|
||
var dep = this;
|
||
|
||
function fetch() {
|
||
dep.contents_ = goog.loadFileSync_(dep.path);
|
||
|
||
if (dep.contents_) {
|
||
dep.contents_ = dep.transform(dep.contents_);
|
||
if (dep.contents_) {
|
||
dep.contents_ += '\n//# sourceURL=' + dep.path;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (goog.global.CLOSURE_IMPORT_SCRIPT) {
|
||
fetch();
|
||
if (this.contents_ &&
|
||
goog.global.CLOSURE_IMPORT_SCRIPT('', this.contents_)) {
|
||
this.contents_ = null;
|
||
controller.loaded();
|
||
} else {
|
||
controller.pause();
|
||
}
|
||
return;
|
||
}
|
||
|
||
|
||
var isEs6 = this.loadFlags['module'] == goog.ModuleType.ES6;
|
||
|
||
if (!this.lazyFetch_) {
|
||
fetch();
|
||
}
|
||
|
||
function load() {
|
||
if (dep.lazyFetch_) {
|
||
fetch();
|
||
}
|
||
|
||
if (!dep.contents_) {
|
||
// loadFileSync_ or transform are responsible. Assume they logged an
|
||
// error.
|
||
return;
|
||
}
|
||
|
||
if (isEs6) {
|
||
controller.setModuleState(goog.ModuleType.ES6);
|
||
}
|
||
|
||
var namespace;
|
||
|
||
try {
|
||
var contents = dep.contents_;
|
||
dep.contents_ = null;
|
||
goog.globalEval(goog.CLOSURE_EVAL_PREFILTER_.createScript(contents));
|
||
if (isEs6) {
|
||
namespace = goog.moduleLoaderState_.moduleName;
|
||
}
|
||
} finally {
|
||
if (isEs6) {
|
||
controller.clearModuleState();
|
||
}
|
||
}
|
||
|
||
if (isEs6) {
|
||
// Due to circular dependencies this may not be available for require
|
||
// right now.
|
||
goog.global['$jscomp']['require']['ensure'](
|
||
[dep.getPathName()], function() {
|
||
controller.registerEs6ModuleExports(
|
||
dep.path,
|
||
goog.global['$jscomp']['require'](dep.getPathName()),
|
||
namespace);
|
||
});
|
||
}
|
||
|
||
controller.loaded();
|
||
}
|
||
|
||
// Do not fetch now; in FireFox 47 the synchronous XHR doesn't block all
|
||
// events. If we fetched now and then document.write'd the contents the
|
||
// document.write would be an eval and would execute too soon! Instead write
|
||
// a script tag to fetch and eval synchronously at the correct time.
|
||
function fetchInOwnScriptThenLoad() {
|
||
/** @type {!HTMLDocument} */
|
||
var doc = goog.global.document;
|
||
|
||
var key = goog.Dependency.registerCallback_(function() {
|
||
goog.Dependency.unregisterCallback_(key);
|
||
load();
|
||
});
|
||
|
||
var nonce = goog.getScriptNonce_();
|
||
var nonceAttr = nonce ? ' nonce="' + nonce + '"' : '';
|
||
var script = '<script' + nonceAttr + '>' +
|
||
goog.protectScriptTag_('goog.Dependency.callback_("' + key + '");') +
|
||
'</' +
|
||
'script>';
|
||
doc.write(
|
||
goog.TRUSTED_TYPES_POLICY_ ?
|
||
goog.TRUSTED_TYPES_POLICY_.createHTML(script) :
|
||
script);
|
||
}
|
||
|
||
// If one thing is pending it is this.
|
||
var anythingElsePending = controller.pending().length > 1;
|
||
|
||
// Additionally if we are meant to defer scripts but the page is still
|
||
// loading (e.g. an ES6 module is loading) then also defer. Or if we are
|
||
// meant to defer and anything else is pending then defer (those may be
|
||
// scripts that did not need transformation and are just script tags with
|
||
// defer set to true, and we need to evaluate after that deferred script).
|
||
var needsAsyncLoading = goog.Dependency.defer_ &&
|
||
(anythingElsePending || goog.isDocumentLoading_());
|
||
|
||
if (needsAsyncLoading) {
|
||
// Note that we only defer when we have to rather than 100% of the time.
|
||
// Always defering would work, but then in theory the order of
|
||
// goog.require calls would then matter. We want to enforce that most of
|
||
// the time the order of the require calls does not matter.
|
||
controller.defer(function() {
|
||
load();
|
||
});
|
||
return;
|
||
}
|
||
// TODO(johnplaisted): Externs are missing onreadystatechange for
|
||
// HTMLDocument.
|
||
/** @type {?} */
|
||
var doc = goog.global.document;
|
||
|
||
var isInternetExplorerOrEdge = goog.inHtmlDocument_() &&
|
||
('ActiveXObject' in goog.global || goog.isEdge_());
|
||
|
||
// Don't delay in any version of IE or pre-Chromium Edge. There's a bug
|
||
// around this that will cause out of order script execution. This means
|
||
// that on older IE ES6 modules will load too early (while the document is
|
||
// still loading + the dom is not available). The other option is to load
|
||
// too late (when the document is complete and the onload even will never
|
||
// fire). This seems to be the lesser of two evils as scripts already act
|
||
// like the former.
|
||
if (isEs6 && goog.inHtmlDocument_() && goog.isDocumentLoading_() &&
|
||
!isInternetExplorerOrEdge) {
|
||
goog.Dependency.defer_ = true;
|
||
// 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.readyState == 'interactive') {
|
||
doc.onreadystatechange = oldCallback;
|
||
load();
|
||
controller.resume();
|
||
}
|
||
if (typeof oldCallback === 'function') {
|
||
oldCallback.apply(undefined, arguments);
|
||
}
|
||
};
|
||
} else {
|
||
// Always eval on old IE.
|
||
if (!goog.inHtmlDocument_() || !goog.isDocumentLoading_()) {
|
||
load();
|
||
} else {
|
||
fetchInOwnScriptThenLoad();
|
||
}
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @param {string} contents
|
||
* @return {string}
|
||
* @abstract
|
||
*/
|
||
goog.TransformedDependency.prototype.transform = function(contents) {};
|
||
|
||
|
||
/**
|
||
* An ES6 module dependency that was transpiled to a jscomp module outside
|
||
* of the debug loader, e.g. server side.
|
||
*
|
||
* @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
|
||
* @extends {goog.TransformedDependency}
|
||
*/
|
||
goog.PreTranspiledEs6ModuleDependency = function(
|
||
path, relativePath, provides, requires, loadFlags) {
|
||
goog.PreTranspiledEs6ModuleDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
};
|
||
goog.inherits(
|
||
goog.PreTranspiledEs6ModuleDependency, goog.TransformedDependency);
|
||
|
||
|
||
/**
|
||
* @override
|
||
* @param {string} contents
|
||
* @return {string}
|
||
*/
|
||
goog.PreTranspiledEs6ModuleDependency.prototype.transform = function(
|
||
contents) {
|
||
return contents;
|
||
};
|
||
|
||
|
||
/**
|
||
* 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
|
||
* @struct @constructor
|
||
* @extends {goog.TransformedDependency}
|
||
*/
|
||
goog.GoogModuleDependency = function(
|
||
path, relativePath, provides, requires, loadFlags) {
|
||
goog.GoogModuleDependency.base(
|
||
this, 'constructor', path, relativePath, provides, requires, loadFlags);
|
||
};
|
||
goog.inherits(goog.GoogModuleDependency, goog.TransformedDependency);
|
||
|
||
|
||
/**
|
||
* @override
|
||
* @param {string} contents
|
||
* @return {string}
|
||
*/
|
||
goog.GoogModuleDependency.prototype.transform = function(contents) {
|
||
if (!goog.LOAD_MODULE_USING_EVAL || goog.global.JSON === undefined) {
|
||
return '' +
|
||
'goog.loadModule(function(exports) {' +
|
||
'"use strict";' + contents +
|
||
'\n' + // terminate any trailing single line comment.
|
||
';return exports' +
|
||
'});' +
|
||
'\n//# sourceURL=' + this.path + '\n';
|
||
} else {
|
||
return '' +
|
||
'goog.loadModule(' +
|
||
goog.global.JSON.stringify(
|
||
contents + '\n//# sourceURL=' + this.path + '\n') +
|
||
');';
|
||
}
|
||
};
|
||
|
||
|
||
/**
|
||
* @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);
|
||
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.
|
||
*
|
||
* @struct @constructor
|
||
*/
|
||
goog.DependencyFactory = function() {};
|
||
|
||
|
||
/**
|
||
* @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
|
||
* @return {!goog.Dependency}
|
||
*/
|
||
goog.DependencyFactory.prototype.createDependency = function(
|
||
path, relativePath, provides, requires, loadFlags) {
|
||
|
||
if (loadFlags['module'] == goog.ModuleType.GOOG) {
|
||
return new goog.GoogModuleDependency(
|
||
path, relativePath, provides, requires, loadFlags);
|
||
} else {
|
||
if (loadFlags['module'] == goog.ModuleType.ES6) {
|
||
if (goog.ASSUME_ES_MODULES_TRANSPILED) {
|
||
return new goog.PreTranspiledEs6ModuleDependency(
|
||
path, relativePath, provides, requires, loadFlags);
|
||
} else {
|
||
return new goog.Es6ModuleDependency(
|
||
path, relativePath, provides, 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);
|
||
};
|
||
|
||
|
||
/**
|
||
* Trusted Types policy for the debug loader.
|
||
* @private @const {?TrustedTypePolicy}
|
||
*/
|
||
goog.TRUSTED_TYPES_POLICY_ = goog.TRUSTED_TYPES_POLICY_NAME ?
|
||
goog.createTrustedTypesPolicy(goog.TRUSTED_TYPES_POLICY_NAME + '#base') :
|
||
null;
|
||
|
||
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);
|
||
};
|
||
}
|
||
|
||
|
||
if (!COMPILED) {
|
||
var isChrome87 = false;
|
||
// Cannot run check for Chrome <87 bug in case of strict CSP environments.
|
||
// TODO(user): Remove once Chrome <87 bug is no longer a problem.
|
||
try {
|
||
isChrome87 = eval(goog.global.trustedTypes.emptyScript) !==
|
||
goog.global.trustedTypes.emptyScript;
|
||
} catch (err) {
|
||
}
|
||
|
||
/**
|
||
* Trusted Types for running dev servers.
|
||
*
|
||
* @private @const
|
||
*/
|
||
goog.CLOSURE_EVAL_PREFILTER_ =
|
||
// Detect Chrome <87 bug with TT and eval.
|
||
goog.global.trustedTypes && isChrome87 &&
|
||
goog.createTrustedTypesPolicy('goog#base#devonly#eval') ||
|
||
{createScript: goog.identity_};
|
||
}
|