Sakurai/pdf.js
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We should use feature detection. Thanks @brendandahl

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This commit is contained in:
Tim de Koning 2012-06-27 18:30:43 +02:00
parent d70e6ab40c
commit a30199527e
1 changed files with 13 additions and 5 deletions
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18
web/compatibility.js
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@ -10,10 +10,10 @@
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
@ -79,9 +79,17 @@
// Object.defineProperty() ?
(function checkObjectDefinePropertyCompatibility() {
// safari 5 and 6 cannot use this on DOM objects and thus it's unusable,
if ((typeof Object.defineProperty !== 'undefined') &&
!/Safari/.test(navigator.userAgent)) 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];