Merge pull request #9170 from Snuffleupagus/rm-polyfills
Remove more polyfills for old browsers
This commit is contained in:
Tim van der Meij
GitHub
commit
58760edba9
@ -13,7 +13,7 @@
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* limitations under the License.
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*/
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/* eslint-disable no-extend-native */
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/* globals VBArray, PDFJS, global */
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/* globals PDFJS */
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// Skip compatibility checks for the extensions and if we already ran
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// this module.
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@ -30,7 +30,6 @@ var isChrome = userAgent.indexOf('Chrom') >= 0;
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var isIOSChrome = userAgent.indexOf('CriOS') >= 0;
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var isIE = userAgent.indexOf('Trident') >= 0;
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var isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
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var isOpera = userAgent.indexOf('Opera') >= 0;
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var isSafari = /Safari\//.test(userAgent) &&
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!/(Chrome\/|Android\s)/.test(userAgent);
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@ -52,51 +51,6 @@ PDFJS.compatibilityChecked = true;
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}
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})();
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// Object.defineProperty()?
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// Support: Android<4.0, Safari<5.1
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(function checkObjectDefinePropertyCompatibility() {
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if (typeof Object.defineProperty !== 'undefined') {
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var definePropertyPossible = true;
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try {
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if (hasDOM) {
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// some browsers (e.g. safari) cannot use defineProperty() on DOM
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// objects and thus the native version is not sufficient
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Object.defineProperty(new Image(), 'id', { value: 'test', });
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}
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// ... another test for android gb browser for non-DOM objects
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var Test = function Test() {};
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Test.prototype = { get id() { }, };
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Object.defineProperty(new Test(), 'id',
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{ value: '', configurable: true, enumerable: true, writable: false, });
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} catch (e) {
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definePropertyPossible = false;
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}
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if (definePropertyPossible) {
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return;
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}
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}
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Object.defineProperty = function objectDefineProperty(obj, name, def) {
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delete obj[name];
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if ('get' in def) {
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obj.__defineGetter__(name, def['get']);
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}
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if ('set' in def) {
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obj.__defineSetter__(name, def['set']);
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}
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if ('value' in def) {
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obj.__defineSetter__(name, function objectDefinePropertySetter(value) {
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this.__defineGetter__(name, function objectDefinePropertyGetter() {
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return value;
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});
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return value;
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});
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obj[name] = def.value;
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}
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};
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})();
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// No XMLHttpRequest#response?
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// Support: IE<11, Android <4.0
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(function checkXMLHttpRequestResponseCompatibility() {
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@ -131,19 +85,6 @@ PDFJS.compatibilityChecked = true;
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},
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});
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// Support: IE9
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if (typeof VBArray !== 'undefined') {
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Object.defineProperty(xhrPrototype, 'response', {
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get: function xmlHttpRequestResponseGet() {
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if (this.responseType === 'arraybuffer') {
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return new Uint8Array(new VBArray(this.responseBody).toArray());
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}
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return this.responseText;
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},
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});
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return;
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}
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Object.defineProperty(xhrPrototype, 'response', {
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get: function xmlHttpRequestResponseGet() {
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if (this.responseType !== 'arraybuffer') {
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@ -160,84 +101,6 @@ PDFJS.compatibilityChecked = true;
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});
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})();
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// window.btoa (base64 encode function) ?
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// Support: IE<10
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(function checkWindowBtoaCompatibility() {
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if ('btoa' in globalScope) {
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return;
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}
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var digits =
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
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globalScope.btoa = function (chars) {
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var buffer = '';
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var i, n;
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for (i = 0, n = chars.length; i < n; i += 3) {
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var b1 = chars.charCodeAt(i) & 0xFF;
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var b2 = chars.charCodeAt(i + 1) & 0xFF;
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var b3 = chars.charCodeAt(i + 2) & 0xFF;
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var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
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var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
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var d4 = i + 2 < n ? (b3 & 0x3F) : 64;
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buffer += (digits.charAt(d1) + digits.charAt(d2) +
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digits.charAt(d3) + digits.charAt(d4));
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}
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return buffer;
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};
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})();
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// window.atob (base64 encode function)?
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// Support: IE<10
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(function checkWindowAtobCompatibility() {
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if ('atob' in globalScope) {
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return;
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}
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// https://github.com/davidchambers/Base64.js
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var digits =
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
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globalScope.atob = function (input) {
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input = input.replace(/=+$/, '');
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if (input.length % 4 === 1) {
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throw new Error('bad atob input');
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}
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for (
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// initialize result and counters
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var bc = 0, bs, buffer, idx = 0, output = '';
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// get next character
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(buffer = input.charAt(idx++));
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// character found in table?
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// initialize bit storage and add its ascii value
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~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
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// and if not first of each 4 characters,
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// convert the first 8 bits to one ascii character
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bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
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) {
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// try to find character in table (0-63, not found => -1)
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buffer = digits.indexOf(buffer);
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}
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return output;
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};
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})();
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// Function.prototype.bind?
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// Support: Android<4.0, iOS<6.0
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(function checkFunctionPrototypeBindCompatibility() {
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if (typeof Function.prototype.bind !== 'undefined') {
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return;
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}
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Function.prototype.bind = function functionPrototypeBind(obj) {
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var fn = this, headArgs = Array.prototype.slice.call(arguments, 1);
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var bound = function functionPrototypeBindBound() {
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var args = headArgs.concat(Array.prototype.slice.call(arguments));
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return fn.apply(obj, args);
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};
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return bound;
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};
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})();
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// HTMLElement dataset property
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// Support: IE<11, Safari<5.1, Android<4.0
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(function checkDatasetProperty() {
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@ -279,93 +142,6 @@ PDFJS.compatibilityChecked = true;
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});
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})();
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// HTMLElement classList property
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// Support: IE<10, Android<4.0, iOS<5.0
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(function checkClassListProperty() {
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function changeList(element, itemName, add, remove) {
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var s = element.className || '';
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var list = s.split(/\s+/g);
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if (list[0] === '') {
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list.shift();
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}
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var index = list.indexOf(itemName);
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if (index < 0 && add) {
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list.push(itemName);
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}
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if (index >= 0 && remove) {
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list.splice(index, 1);
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}
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element.className = list.join(' ');
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return (index >= 0);
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}
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if (!hasDOM) {
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return;
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}
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var div = document.createElement('div');
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if ('classList' in div) {
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return; // classList property exists
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}
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var classListPrototype = {
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add(name) {
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changeList(this.element, name, true, false);
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},
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contains(name) {
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return changeList(this.element, name, false, false);
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},
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remove(name) {
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changeList(this.element, name, false, true);
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},
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toggle(name) {
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changeList(this.element, name, true, true);
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},
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};
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Object.defineProperty(HTMLElement.prototype, 'classList', {
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get() {
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if (this._classList) {
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return this._classList;
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}
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var classList = Object.create(classListPrototype, {
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element: {
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value: this,
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writable: false,
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enumerable: true,
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},
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});
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Object.defineProperty(this, '_classList', {
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value: classList,
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writable: false,
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enumerable: false,
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});
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return classList;
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},
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enumerable: true,
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});
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})();
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// Check onclick compatibility in Opera
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// Support: Opera<15
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(function checkOnClickCompatibility() {
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// workaround for reported Opera bug DSK-354448:
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// onclick fires on disabled buttons with opaque content
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function ignoreIfTargetDisabled(event) {
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if (isDisabled(event.target)) {
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event.stopPropagation();
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}
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}
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function isDisabled(node) {
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return node.disabled || (node.parentNode && isDisabled(node.parentNode));
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}
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if (isOpera) {
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// use browser detection since we cannot feature-check this bug
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document.addEventListener('click', ignoreIfTargetDisabled, true);
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}
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})();
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// Checks if possible to use URL.createObjectURL()
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// Support: IE, Chrome on iOS
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(function checkOnBlobSupport() {
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