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Merge pull request #1849 from kingsquare/master

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Fix for web worker test in Safari
This commit is contained in:
Yury Delendik 2012-06-28 03:05:04 -07:00
commit 665ff0d36f
2 changed files with 43 additions and 12 deletions
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23
web/compatibility.js
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@ -6,6 +6,16 @@
// Checking if the typed arrays are supported
(function checkTypedArrayCompatibility() {
if (typeof Uint8Array !== 'undefined') {
// some mobile versions do not support subarray (e.g. safari 5 / iOS)
if (typeof Uint8Array.prototype.subarray === 'undefined') {
Uint8Array.prototype.subarray = function subarray(start, end) {
return new Uint8Array(this.slice(start, end));
};
Float32Array.prototype.subarray = function subarray(start, end) {
return new Float32Array(this.slice(start, end));
};
}
// some mobile version might not support Float64Array
if (typeof Float64Array === 'undefined')
window.Float64Array = Float32Array;
@ -69,8 +79,17 @@
// Object.defineProperty() ?
(function checkObjectDefinePropertyCompatibility() {
if (typeof Object.defineProperty !== 'undefined')
return;
if (typeof Object.defineProperty !== 'undefined') {
// some browsers (e.g. safari) cannot use defineProperty() on DOM objects
// and thus the native version is not sufficient
var definePropertyPossible = true;
try {
Object.defineProperty(new Image(), 'id', { value: 'test' });
} catch (e) {
definePropertyPossible = false;
}
if (definePropertyPossible) return;
}
Object.defineProperty = function objectDefineProperty(obj, name, def) {
delete obj[name];