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@@ -17,6 +17,19 @@
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(function compatibilityWrapper() {
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'use strict';
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+var userAgent = navigator.userAgent;
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+
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+var isAndroid = /Android/.test(userAgent);
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+var isAndroidPre3 = /Android\s[0-2][^\d]/.test(userAgent);
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+var isAndroidPre5 = /Android\s[0-4][^\d]/.test(userAgent);
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+var isChrome = userAgent.indexOf('Chrom') >= 0;
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+var isChromeWithRangeBug = /Chrome\/(39|40)\./.test(userAgent);
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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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+
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// Initializing PDFJS global object here, it case if we need to change/disable
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// some PDF.js features, e.g. range requests
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if (typeof PDFJS === 'undefined') {
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@@ -29,12 +42,12 @@ if (typeof PDFJS === 'undefined') {
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if (typeof Uint8Array !== 'undefined') {
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// Support: iOS<6.0
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if (typeof Uint8Array.prototype.subarray === 'undefined') {
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- Uint8Array.prototype.subarray = function subarray(start, end) {
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- return new Uint8Array(this.slice(start, end));
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- };
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- Float32Array.prototype.subarray = function subarray(start, end) {
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- return new Float32Array(this.slice(start, end));
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- };
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+ Uint8Array.prototype.subarray = function subarray(start, end) {
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+ return new Uint8Array(this.slice(start, end));
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+ };
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+ Float32Array.prototype.subarray = function subarray(start, end) {
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+ return new Float32Array(this.slice(start, end));
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+ };
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}
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// Support: Android<4.1
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@@ -429,7 +442,7 @@ if (typeof PDFJS === 'undefined') {
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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 (navigator.userAgent.indexOf('Opera') !== -1) {
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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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@@ -439,7 +452,7 @@ if (typeof PDFJS === 'undefined') {
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// Support: IE
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(function checkOnBlobSupport() {
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// sometimes IE loosing the data created with createObjectURL(), see #3977
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- if (navigator.userAgent.indexOf('Trident') >= 0) {
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+ if (isIE) {
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PDFJS.disableCreateObjectURL = true;
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}
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})();
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@@ -452,25 +465,19 @@ if (typeof PDFJS === 'undefined') {
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PDFJS.locale = navigator.userLanguage || 'en-US';
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})();
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+// Support: Safari 6.0+, Android<3.0, Chrome 39/40, iOS
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(function checkRangeRequests() {
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// Safari has issues with cached range requests see:
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// https://github.com/mozilla/pdf.js/issues/3260
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// Last tested with version 6.0.4.
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- // Support: Safari 6.0+
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- var isSafari = /Safari\//.test(navigator.userAgent) &&
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- !/(Chrome\/|Android\s)/.test(navigator.userAgent);
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// Older versions of Android (pre 3.0) has issues with range requests, see:
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// https://github.com/mozilla/pdf.js/issues/3381.
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// Make sure that we only match webkit-based Android browsers,
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// since Firefox/Fennec works as expected.
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- // Support: Android<3.0
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- var isOldAndroid = /Android\s[0-2][^\d]/.test(navigator.userAgent);
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// Range requests are broken in Chrome 39 and 40, https://crbug.com/442318
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- var isChromeWithRangeBug = /Chrome\/(39|40)\./.test(navigator.userAgent);
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-
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- if (isSafari || isOldAndroid || isChromeWithRangeBug) {
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+ if (isSafari || isAndroidPre3 || isChromeWithRangeBug || isIOS) {
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PDFJS.disableRange = true;
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PDFJS.disableStream = true;
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}
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@@ -482,7 +489,7 @@ if (typeof PDFJS === 'undefined') {
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// Android 2.x has so buggy pushState support that it was removed in
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// Android 3.0 and restored as late as in Android 4.2.
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// Support: Android 2.x
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- if (!history.pushState || navigator.userAgent.indexOf('Android 2.') >= 0) {
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+ if (!history.pushState || isAndroidPre3) {
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PDFJS.disableHistory = true;
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}
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})();
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@@ -502,17 +509,17 @@ if (typeof PDFJS === 'undefined') {
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// Old Chrome and Android use an inaccessible CanvasPixelArray prototype.
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// Because we cannot feature detect it, we rely on user agent parsing.
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var polyfill = false, versionMatch;
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- if (navigator.userAgent.indexOf('Chrom') >= 0) {
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- versionMatch = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
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+ if (isChrome) {
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+ versionMatch = userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
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// Chrome < 21 lacks the set function.
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polyfill = versionMatch && parseInt(versionMatch[2]) < 21;
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- } else if (navigator.userAgent.indexOf('Android') >= 0) {
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+ } else if (isAndroid) {
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// Android < 4.4 lacks the set function.
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// Android >= 4.4 will contain Chrome in the user agent,
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// thus pass the Chrome check above and not reach this block.
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- polyfill = /Android\s[0-4][^\d]/g.test(navigator.userAgent);
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- } else if (navigator.userAgent.indexOf('Safari') >= 0) {
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- versionMatch = navigator.userAgent.
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+ polyfill = isAndroidPre5;
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+ } else if (isSafari) {
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+ versionMatch = userAgent.
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match(/Version\/([0-9]+)\.([0-9]+)\.([0-9]+) Safari\//);
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// Safari < 6 lacks the set function.
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polyfill = versionMatch && parseInt(versionMatch[1]) < 6;
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@@ -542,7 +549,6 @@ if (typeof PDFJS === 'undefined') {
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window.setTimeout(callback, 20);
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}
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- var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
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if (isIOS) {
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// requestAnimationFrame on iOS is broken, replacing with fake one.
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window.requestAnimationFrame = fakeRequestAnimationFrame;
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@@ -557,9 +563,8 @@ if (typeof PDFJS === 'undefined') {
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fakeRequestAnimationFrame;
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})();
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+// Support: Android, iOS
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(function checkCanvasSizeLimitation() {
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- var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
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- var isAndroid = /Android/g.test(navigator.userAgent);
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if (isIOS || isAndroid) {
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// 5MP
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PDFJS.maxCanvasPixels = 5242880;
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@@ -569,9 +574,7 @@ if (typeof PDFJS === 'undefined') {
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// Disable fullscreen support for certain problematic configurations.
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// Support: IE11+ (when embedded).
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(function checkFullscreenSupport() {
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- var isEmbeddedIE = (navigator.userAgent.indexOf('Trident') >= 0 &&
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- window.parent !== window);
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- if (isEmbeddedIE) {
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+ if (isIE && window.parent !== window) {
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PDFJS.disableFullscreen = true;
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}
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})();
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