[Pkg-javascript-commits] [pdf.js] 192/210: Update web/compatibility.js
David Prévot
taffit at moszumanska.debian.org
Thu Jun 5 14:21:17 UTC 2014
This is an automated email from the git hooks/post-receive script.
taffit pushed a commit to branch upstream
in repository pdf.js.
commit 85291dd8da18b806a91a5d31a247accd37a8a605
Author: Michał Gołębiowski <m.goleb at gmail.com>
Date: Thu May 15 17:28:09 2014 +0200
Update web/compatibility.js
1) Remove obsolete workarounds
2) Add support comments
---
web/compatibility.js | 148 +++++++++++++--------------------------------------
1 file changed, 37 insertions(+), 111 deletions(-)
diff --git a/web/compatibility.js b/web/compatibility.js
index 98dc839..fd9f215 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -25,9 +25,10 @@ if (typeof PDFJS === 'undefined') {
}
// Checking if the typed arrays are supported
+// Support: iOS<6.0 (subarray), IE<10, Android<4.0
(function checkTypedArrayCompatibility() {
if (typeof Uint8Array !== 'undefined') {
- // some mobile versions do not support subarray (e.g. safari 5 / iOS)
+ // Support: iOS<6.0
if (typeof Uint8Array.prototype.subarray === 'undefined') {
Uint8Array.prototype.subarray = function subarray(start, end) {
return new Uint8Array(this.slice(start, end));
@@ -37,7 +38,7 @@ if (typeof PDFJS === 'undefined') {
};
}
- // some mobile version might not support Float64Array
+ // Support: Android<4.1
if (typeof Float64Array === 'undefined') {
window.Float64Array = Float32Array;
}
@@ -97,26 +98,15 @@ if (typeof PDFJS === 'undefined') {
})();
// URL = URL || webkitURL
+// Support: Safari<7, Android 4.2+
(function normalizeURLObject() {
if (!window.URL) {
window.URL = window.webkitURL;
}
})();
-// Object.create() ?
-(function checkObjectCreateCompatibility() {
- if (typeof Object.create !== 'undefined') {
- return;
- }
-
- Object.create = function objectCreate(proto) {
- function Constructor() {}
- Constructor.prototype = proto;
- return new Constructor();
- };
-})();
-
-// Object.defineProperty() ?
+// Object.defineProperty()?
+// Support: Android<4.0, Safari<5.1
(function checkObjectDefinePropertyCompatibility() {
if (typeof Object.defineProperty !== 'undefined') {
var definePropertyPossible = true;
@@ -157,78 +147,23 @@ if (typeof PDFJS === 'undefined') {
};
})();
-// Object.keys() ?
-(function checkObjectKeysCompatibility() {
- if (typeof Object.keys !== 'undefined') {
- return;
- }
- Object.keys = function objectKeys(obj) {
- var result = [];
- for (var i in obj) {
- if (obj.hasOwnProperty(i)) {
- result.push(i);
- }
- }
- return result;
- };
-})();
-
-// No readAsArrayBuffer ?
-(function checkFileReaderReadAsArrayBuffer() {
- if (typeof FileReader === 'undefined') {
- return; // FileReader is not implemented
- }
- var frPrototype = FileReader.prototype;
- // Older versions of Firefox might not have readAsArrayBuffer
- if ('readAsArrayBuffer' in frPrototype) {
- return; // readAsArrayBuffer is implemented
- }
- Object.defineProperty(frPrototype, 'readAsArrayBuffer', {
- value: function fileReaderReadAsArrayBuffer(blob) {
- var fileReader = new FileReader();
- var originalReader = this;
- fileReader.onload = function fileReaderOnload(evt) {
- var data = evt.target.result;
- var buffer = new ArrayBuffer(data.length);
- var uint8Array = new Uint8Array(buffer);
-
- for (var i = 0, ii = data.length; i < ii; i++) {
- uint8Array[i] = data.charCodeAt(i);
- }
-
- Object.defineProperty(originalReader, 'result', {
- value: buffer,
- enumerable: true,
- writable: false,
- configurable: true
- });
-
- var event = document.createEvent('HTMLEvents');
- event.initEvent('load', false, false);
- originalReader.dispatchEvent(event);
- };
- fileReader.readAsBinaryString(blob);
- }
- });
-})();
-
-// No XMLHttpRequest.response ?
+// No XMLHttpRequest#response?
+// Support: IE<11, Android <4.0
(function checkXMLHttpRequestResponseCompatibility() {
var xhrPrototype = XMLHttpRequest.prototype;
- if (!('overrideMimeType' in xhrPrototype)) {
+ var xhr = new XMLHttpRequest();
+ if (!('overrideMimeType' in xhr)) {
// IE10 might have response, but not overrideMimeType
+ // Support: IE10
Object.defineProperty(xhrPrototype, 'overrideMimeType', {
value: function xmlHttpRequestOverrideMimeType(mimeType) {}
});
}
- if ('response' in xhrPrototype ||
- 'mozResponseArrayBuffer' in xhrPrototype ||
- 'mozResponse' in xhrPrototype ||
- 'responseArrayBuffer' in xhrPrototype) {
+ if ('response' in xhr || 'responseArrayBuffer' in xhr) {
return;
}
- // IE9 ?
+ // Support: IE9
if (typeof VBArray !== 'undefined') {
Object.defineProperty(xhrPrototype, 'response', {
get: function xmlHttpRequestResponseGet() {
@@ -243,7 +178,7 @@ if (typeof PDFJS === 'undefined') {
// will be only called to set "arraybuffer"
this.overrideMimeType('text/plain; charset=x-user-defined');
}
- if (typeof xhrPrototype.overrideMimeType === 'function') {
+ if (typeof xhr.overrideMimeType === 'function') {
Object.defineProperty(xhrPrototype, 'responseType',
{ set: responseTypeSetter });
}
@@ -260,6 +195,7 @@ if (typeof PDFJS === 'undefined') {
})();
// window.btoa (base64 encode function) ?
+// Support: IE<10
(function checkWindowBtoaCompatibility() {
if ('btoa' in window) {
return;
@@ -285,7 +221,8 @@ if (typeof PDFJS === 'undefined') {
};
})();
-// window.atob (base64 encode function) ?
+// window.atob (base64 encode function)?
+// Support: IE<10
(function checkWindowAtobCompatibility() {
if ('atob' in window) {
return;
@@ -318,7 +255,8 @@ if (typeof PDFJS === 'undefined') {
};
})();
-// Function.prototype.bind ?
+// Function.prototype.bind?
+// Support: Android<4.0, iOS<6.0
(function checkFunctionPrototypeBindCompatibility() {
if (typeof Function.prototype.bind !== 'undefined') {
return;
@@ -335,6 +273,7 @@ if (typeof PDFJS === 'undefined') {
})();
// HTMLElement dataset property
+// Support: IE<11, Safari<5.1, Android<4.0
(function checkDatasetProperty() {
var div = document.createElement('div');
if ('dataset' in div) {
@@ -372,6 +311,7 @@ if (typeof PDFJS === 'undefined') {
})();
// HTMLElement classList property
+// Support: IE<10, Android<4.0, iOS<5.0
(function checkClassListProperty() {
var div = document.createElement('div');
if ('classList' in div) {
@@ -435,6 +375,9 @@ if (typeof PDFJS === 'undefined') {
})();
// Check console compatibility
+// In older IE versions the console object is not available
+// unless console is open.
+// Support: IE<10
(function checkConsoleCompatibility() {
if (!('console' in window)) {
window.console = {
@@ -457,6 +400,7 @@ if (typeof PDFJS === 'undefined') {
})();
// Check onclick compatibility in Opera
+// Support: Opera<15
(function checkOnClickCompatibility() {
// workaround for reported Opera bug DSK-354448:
// onclick fires on disabled buttons with opaque content
@@ -475,6 +419,7 @@ if (typeof PDFJS === 'undefined') {
})();
// Checks if possible to use URL.createObjectURL()
+// Support: IE
(function checkOnBlobSupport() {
// sometimes IE loosing the data created with createObjectURL(), see #3977
if (navigator.userAgent.indexOf('Trident') >= 0) {
@@ -504,6 +449,7 @@ if (typeof PDFJS === 'undefined') {
// Safari has issues with cached range requests see:
// https://github.com/mozilla/pdf.js/issues/3260
// Last tested with version 6.0.4.
+ // Support: Safari 6.0+
var isSafari = Object.prototype.toString.call(
window.HTMLElement).indexOf('Constructor') > 0;
@@ -511,6 +457,7 @@ if (typeof PDFJS === 'undefined') {
// https://github.com/mozilla/pdf.js/issues/3381.
// Make sure that we only match webkit-based Android browsers,
// since Firefox/Fennec works as expected.
+ // Support: Android<3.0
var regex = /Android\s[0-2][^\d]/;
var isOldAndroid = regex.test(navigator.userAgent);
@@ -520,12 +467,18 @@ if (typeof PDFJS === 'undefined') {
})();
// Check if the browser supports manipulation of the history.
+// Support: IE<10, Android<4.2
(function checkHistoryManipulation() {
- if (!window.history.pushState) {
+ // Android 2.x has so buggy pushState support that it was removed in
+ // Android 3.0 and restored as late as in Android 4.2.
+ // Support: Android 2.x
+ if (!history.pushState || navigator.userAgent.indexOf('Android 2.') >= 0) {
PDFJS.disableHistory = true;
}
})();
+// TODO CanvasPixelArray is deprecated; use Uint8ClampedArray
+// once it's supported.
(function checkSetPresenceInImageData() {
if (window.CanvasPixelArray) {
if (typeof window.CanvasPixelArray.prototype.set !== 'function') {
@@ -538,39 +491,12 @@ if (typeof PDFJS === 'undefined') {
}
})();
-(function checkStorages() {
- // Feature test as per http://diveintohtml5.info/storage.html
- // The additional localStorage call is to get around a FF quirk, see
- // bug #495747 in bugzilla
- try {
- if ('localStorage' in window && window['localStorage'] !== null) {
- return;
- }
- } catch (e) { }
- // When the generic viewer is used in Firefox the following code will fail
- // when the preference 'network.cookie.lifetimePolicy' is set to 1,
- // see Mozilla bug 365772.
- try {
- window.localStorage = {
- data: Object.create(null),
- getItem: function (key) {
- return this.data[key];
- },
- setItem: function (key, value) {
- this.data[key] = value;
- }
- };
- } catch (e) {
- console.log('Unable to create polyfill for localStorage');
- }
-})();
-
+// Support: IE<10, Android<4.0, iOS<5.0
(function checkRequestAnimationFrame() {
if ('requestAnimationFrame' in window) {
return;
}
- window.requestAnimationFrame =
- window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame ||
+ window.requestAnimationFrame = window.webkitRequestAnimationFrame ||
(function fakeRequestAnimationFrame(callback) {
window.setTimeout(callback, 20);
});
--
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