mirror of
https://github.com/cappuccino/cappuccino.git
synced 2026-08-25 21:17:03 +00:00
283 lines
8.4 KiB
JavaScript
283 lines
8.4 KiB
JavaScript
/*
|
|
* OldBrowserCompatibility.js
|
|
* Objective-J
|
|
*
|
|
* Created by Martin Carlberg.
|
|
* Copyright 2013, Martin Carlberg.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
// This is for IE8 support. It doesn't have the Object.create function.
|
|
if (!Object.create)
|
|
{
|
|
Object.create = function(o)
|
|
{
|
|
if (arguments.length > 1)
|
|
throw new Error('Object.create implementation only accepts the first parameter.');
|
|
|
|
function F() {}
|
|
F.prototype = o;
|
|
return new F();
|
|
};
|
|
}
|
|
|
|
// This is for IE8 support. It doesn't have the Object.keys function.
|
|
if (!Object.keys)
|
|
{
|
|
Object.keys = (function()
|
|
{
|
|
var hasOwnProperty = Object.prototype.hasOwnProperty,
|
|
hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
|
|
dontEnums = [
|
|
'toString',
|
|
'toLocaleString',
|
|
'valueOf',
|
|
'hasOwnProperty',
|
|
'isPrototypeOf',
|
|
'propertyIsEnumerable',
|
|
'constructor'
|
|
],
|
|
dontEnumsLength = dontEnums.length;
|
|
|
|
return function (obj)
|
|
{
|
|
if (typeof obj !== 'object' && typeof obj !== 'function' || obj === null)
|
|
throw new TypeError('Object.keys called on non-object');
|
|
|
|
var result = [];
|
|
|
|
for (var prop in obj)
|
|
{
|
|
if (hasOwnProperty.call(obj, prop))
|
|
result.push(prop);
|
|
}
|
|
|
|
if (hasDontEnumBug)
|
|
{
|
|
for (var i = 0; i < dontEnumsLength; i++)
|
|
{
|
|
if (hasOwnProperty.call(obj, dontEnums[i]))
|
|
result.push(dontEnums[i]);
|
|
}
|
|
}
|
|
return result;
|
|
};
|
|
})();
|
|
}
|
|
|
|
// This is for IE8 support. It doesn't have the Array.prototype.indexOf function.
|
|
if (!Array.prototype.indexOf)
|
|
{
|
|
Array.prototype.indexOf = function(searchElement /*, fromIndex */ )
|
|
{
|
|
"use strict";
|
|
if (this === null)
|
|
throw new TypeError();
|
|
|
|
var t = new Object(this),
|
|
len = t.length >>> 0;
|
|
|
|
if (len === 0)
|
|
return -1;
|
|
|
|
var n = 0;
|
|
if (arguments.length > 1)
|
|
{
|
|
n = Number(arguments[1]);
|
|
if (n != n) // shortcut for verifying if it's NaN
|
|
n = 0;
|
|
else if (n !== 0 && n != Infinity && n != -Infinity)
|
|
n = (n > 0 || -1) * Math.floor(Math.abs(n));
|
|
}
|
|
|
|
if (n >= len)
|
|
return -1;
|
|
|
|
var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);
|
|
for (; k < len; k++)
|
|
{
|
|
if (k in t && t[k] === searchElement)
|
|
return k;
|
|
}
|
|
return -1;
|
|
};
|
|
}
|
|
|
|
// https://tc39.github.io/ecma262/#sec-array.prototype.findindex
|
|
if (!Array.prototype.findIndex) {
|
|
Object.defineProperty(Array.prototype, 'findIndex', {
|
|
value: function(predicate) {
|
|
// 1. Let O be ? ToObject(this value).
|
|
if (this == null) {
|
|
throw new TypeError('"this" is null or not defined');
|
|
}
|
|
|
|
var o = Object(this);
|
|
|
|
// 2. Let len be ? ToLength(? Get(O, "length")).
|
|
var len = o.length >>> 0;
|
|
|
|
// 3. If IsCallable(predicate) is false, throw a TypeError exception.
|
|
if (typeof predicate !== 'function') {
|
|
throw new TypeError('predicate must be a function');
|
|
}
|
|
|
|
// 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
|
|
var thisArg = arguments[1];
|
|
|
|
// 5. Let k be 0.
|
|
var k = 0;
|
|
|
|
// 6. Repeat, while k < len
|
|
while (k < len) {
|
|
// a. Let Pk be ! ToString(k).
|
|
// b. Let kValue be ? Get(O, Pk).
|
|
// c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
|
|
// d. If testResult is true, return k.
|
|
var kValue = o[k];
|
|
if (predicate.call(thisArg, kValue, k, o)) {
|
|
return k;
|
|
}
|
|
// e. Increase k by 1.
|
|
k++;
|
|
}
|
|
|
|
// 7. Return -1.
|
|
return -1;
|
|
},
|
|
configurable: true,
|
|
writable: true
|
|
});
|
|
}
|
|
|
|
// ECMAScript 6 has added this. It is copied from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
|
|
if (!String.prototype.startsWith) {
|
|
String.prototype.startsWith = function(searchString, position){
|
|
position = position || 0;
|
|
return this.substr(position, searchString.length) === searchString;
|
|
};
|
|
}
|
|
|
|
// ECMAScript 6 has added this. It is copied from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
|
|
if (!String.prototype.endsWith) {
|
|
String.prototype.endsWith = function(searchString, position) {
|
|
var subjectString = this.toString();
|
|
if (typeof position !== 'number' || !isFinite(position) || Math.floor(position) !== position || position > subjectString.length) {
|
|
position = subjectString.length;
|
|
}
|
|
position -= searchString.length;
|
|
var lastIndex = subjectString.indexOf(searchString, position);
|
|
return lastIndex !== -1 && lastIndex === position;
|
|
};
|
|
};
|
|
|
|
// ECMAScript 6 has added this. It is copied from https://developer.mozilla.org/nl/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
|
|
// https://tc39.github.io/ecma262/#sec-array.prototype.includes
|
|
if (!Array.prototype.includes) {
|
|
Object.defineProperty(Array.prototype, 'includes', {
|
|
value: function(searchElement, fromIndex) {
|
|
|
|
// 1. Let O be ? ToObject(this value).
|
|
if (this == null) {
|
|
throw new TypeError('"this" is null or not defined');
|
|
}
|
|
|
|
var o = Object(this);
|
|
|
|
// 2. Let len be ? ToLength(? Get(O, "length")).
|
|
var len = o.length >>> 0;
|
|
|
|
// 3. If len is 0, return false.
|
|
if (len === 0) {
|
|
return false;
|
|
}
|
|
|
|
// 4. Let n be ? ToInteger(fromIndex).
|
|
// (If fromIndex is undefined, this step produces the value 0.)
|
|
var n = fromIndex | 0;
|
|
|
|
// 5. If n ≥ 0, then
|
|
// a. Let k be n.
|
|
// 6. Else n < 0,
|
|
// a. Let k be len + n.
|
|
// b. If k < 0, let k be 0.
|
|
var k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
|
|
|
|
// 7. Repeat, while k < len
|
|
while (k < len) {
|
|
// a. Let elementK be the result of ? Get(O, ! ToString(k)).
|
|
// b. If SameValueZero(searchElement, elementK) is true, return true.
|
|
// c. Increase k by 1.
|
|
// NOTE: === provides the correct "SameValueZero" comparison needed here.
|
|
if (o[k] === searchElement) {
|
|
return true;
|
|
}
|
|
k++;
|
|
}
|
|
|
|
// 8. Return false
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
// https://tc39.github.io/ecma262/#sec-array.prototype.find
|
|
if (!Array.prototype.find) {
|
|
Object.defineProperty(Array.prototype, 'find', {
|
|
value: function(predicate) {
|
|
// 1. Let O be ? ToObject(this value).
|
|
if (this == null) {
|
|
throw TypeError('"this" is null or not defined');
|
|
}
|
|
|
|
var o = Object(this);
|
|
|
|
// 2. Let len be ? ToLength(? Get(O, "length")).
|
|
var len = o.length >>> 0;
|
|
|
|
// 3. If IsCallable(predicate) is false, throw a TypeError exception.
|
|
if (typeof predicate !== 'function') {
|
|
throw TypeError('predicate must be a function');
|
|
}
|
|
|
|
// 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
|
|
var thisArg = arguments[1];
|
|
|
|
// 5. Let k be 0.
|
|
var k = 0;
|
|
|
|
// 6. Repeat, while k < len
|
|
while (k < len) {
|
|
// a. Let Pk be ! ToString(k).
|
|
// b. Let kValue be ? Get(O, Pk).
|
|
// c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
|
|
// d. If testResult is true, return kValue.
|
|
var kValue = o[k];
|
|
if (predicate.call(thisArg, kValue, k, o)) {
|
|
return kValue;
|
|
}
|
|
// e. Increase k by 1.
|
|
k++;
|
|
}
|
|
|
|
// 7. Return undefined.
|
|
return undefined;
|
|
},
|
|
configurable: true,
|
|
writable: true
|
|
});
|
|
}
|