The Tor Browser / file comparison
comparison: toolkit/components/url-classifier/content/moz/lang.js
toolkit/components/url-classifier/content/moz/lang.js
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:42dbc4ef06e8 |
|---|---|
| 1 # This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 # License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 # file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 | |
| 5 | |
| 6 /** | |
| 7 * lang.js - Some missing JavaScript language features | |
| 8 */ | |
| 9 | |
| 10 /** | |
| 11 * Partially applies a function to a particular "this object" and zero or | |
| 12 * more arguments. The result is a new function with some arguments of the first | |
| 13 * function pre-filled and the value of |this| "pre-specified". | |
| 14 * | |
| 15 * Remaining arguments specified at call-time are appended to the pre- | |
| 16 * specified ones. | |
| 17 * | |
| 18 * Usage: | |
| 19 * var barMethBound = BindToObject(myFunction, myObj, "arg1", "arg2"); | |
| 20 * barMethBound("arg3", "arg4"); | |
| 21 * | |
| 22 * @param fn {string} Reference to the function to be bound | |
| 23 * | |
| 24 * @param self {object} Specifies the object which |this| should point to | |
| 25 * when the function is run. If the value is null or undefined, it will default | |
| 26 * to the global object. | |
| 27 * | |
| 28 * @returns {function} A partially-applied form of the speficied function. | |
| 29 */ | |
| 30 function BindToObject(fn, self, opt_args) { | |
| 31 var boundargs = fn.boundArgs_ || []; | |
| 32 boundargs = boundargs.concat(Array.slice(arguments, 2, arguments.length)); | |
| 33 | |
| 34 if (fn.boundSelf_) | |
| 35 self = fn.boundSelf_; | |
| 36 if (fn.boundFn_) | |
| 37 fn = fn.boundFn_; | |
| 38 | |
| 39 var newfn = function() { | |
| 40 // Combine the static args and the new args into one big array | |
| 41 var args = boundargs.concat(Array.slice(arguments)); | |
| 42 return fn.apply(self, args); | |
| 43 } | |
| 44 | |
| 45 newfn.boundArgs_ = boundargs; | |
| 46 newfn.boundSelf_ = self; | |
| 47 newfn.boundFn_ = fn; | |
| 48 | |
| 49 return newfn; | |
| 50 } | |
| 51 | |
| 52 /** | |
| 53 * Inherit the prototype methods from one constructor into another. | |
| 54 * | |
| 55 * Usage: | |
| 56 * | |
| 57 * function ParentClass(a, b) { } | |
| 58 * ParentClass.prototype.foo = function(a) { } | |
| 59 * | |
| 60 * function ChildClass(a, b, c) { | |
| 61 * ParentClass.call(this, a, b); | |
| 62 * } | |
| 63 * | |
| 64 * ChildClass.inherits(ParentClass); | |
| 65 * | |
| 66 * var child = new ChildClass("a", "b", "see"); | |
| 67 * child.foo(); // works | |
| 68 * | |
| 69 * In addition, a superclass' implementation of a method can be invoked | |
| 70 * as follows: | |
| 71 * | |
| 72 * ChildClass.prototype.foo = function(a) { | |
| 73 * ChildClass.superClass_.foo.call(this, a); | |
| 74 * // other code | |
| 75 * }; | |
| 76 */ | |
| 77 Function.prototype.inherits = function(parentCtor) { | |
| 78 var tempCtor = function(){}; | |
| 79 tempCtor.prototype = parentCtor.prototype; | |
| 80 this.superClass_ = parentCtor.prototype; | |
| 81 this.prototype = new tempCtor(); | |
| 82 } |
