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@@ -25,9 +25,10 @@ if (typeof PDFJS === 'undefined') {
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}
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// Checking if the typed arrays are supported
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+// Support: iOS<6.0 (subarray), IE<10, Android<4.0
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(function checkTypedArrayCompatibility() {
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if (typeof Uint8Array !== 'undefined') {
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- // some mobile versions do not support subarray (e.g. safari 5 / iOS)
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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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@@ -37,7 +38,7 @@ if (typeof PDFJS === 'undefined') {
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};
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}
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- // some mobile version might not support Float64Array
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+ // Support: Android<4.1
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if (typeof Float64Array === 'undefined') {
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window.Float64Array = Float32Array;
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}
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@@ -97,26 +98,15 @@ if (typeof PDFJS === 'undefined') {
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})();
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// URL = URL || webkitURL
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+// Support: Safari<7, Android 4.2+
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(function normalizeURLObject() {
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if (!window.URL) {
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window.URL = window.webkitURL;
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}
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})();
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-// Object.create() ?
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-(function checkObjectCreateCompatibility() {
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- if (typeof Object.create !== 'undefined') {
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- return;
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- }
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-
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- Object.create = function objectCreate(proto) {
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- function Constructor() {}
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- Constructor.prototype = proto;
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- return new Constructor();
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- };
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-})();
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-
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-// Object.defineProperty() ?
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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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@@ -157,78 +147,23 @@ if (typeof PDFJS === 'undefined') {
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};
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})();
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-// Object.keys() ?
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-(function checkObjectKeysCompatibility() {
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- if (typeof Object.keys !== 'undefined') {
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- return;
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- }
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- Object.keys = function objectKeys(obj) {
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- var result = [];
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- for (var i in obj) {
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- if (obj.hasOwnProperty(i)) {
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- result.push(i);
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- }
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- }
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- return result;
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- };
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-})();
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-
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-// No readAsArrayBuffer ?
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-(function checkFileReaderReadAsArrayBuffer() {
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- if (typeof FileReader === 'undefined') {
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- return; // FileReader is not implemented
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- }
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- var frPrototype = FileReader.prototype;
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- // Older versions of Firefox might not have readAsArrayBuffer
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- if ('readAsArrayBuffer' in frPrototype) {
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- return; // readAsArrayBuffer is implemented
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- }
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- Object.defineProperty(frPrototype, 'readAsArrayBuffer', {
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- value: function fileReaderReadAsArrayBuffer(blob) {
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- var fileReader = new FileReader();
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- var originalReader = this;
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- fileReader.onload = function fileReaderOnload(evt) {
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- var data = evt.target.result;
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- var buffer = new ArrayBuffer(data.length);
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- var uint8Array = new Uint8Array(buffer);
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-
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- for (var i = 0, ii = data.length; i < ii; i++) {
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- uint8Array[i] = data.charCodeAt(i);
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- }
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-
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- Object.defineProperty(originalReader, 'result', {
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- value: buffer,
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- enumerable: true,
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- writable: false,
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- configurable: true
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- });
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-
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- var event = document.createEvent('HTMLEvents');
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- event.initEvent('load', false, false);
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- originalReader.dispatchEvent(event);
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- };
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- fileReader.readAsBinaryString(blob);
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- }
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- });
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-})();
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-
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-// No XMLHttpRequest.response ?
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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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var xhrPrototype = XMLHttpRequest.prototype;
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- if (!('overrideMimeType' in xhrPrototype)) {
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+ var xhr = new XMLHttpRequest();
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+ if (!('overrideMimeType' in xhr)) {
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// IE10 might have response, but not overrideMimeType
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+ // Support: IE10
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Object.defineProperty(xhrPrototype, 'overrideMimeType', {
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value: function xmlHttpRequestOverrideMimeType(mimeType) {}
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});
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}
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- if ('response' in xhrPrototype ||
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- 'mozResponseArrayBuffer' in xhrPrototype ||
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- 'mozResponse' in xhrPrototype ||
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- 'responseArrayBuffer' in xhrPrototype) {
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+ if ('response' in xhr || 'responseArrayBuffer' in xhr) {
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return;
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}
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- // IE9 ?
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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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@@ -243,7 +178,7 @@ if (typeof PDFJS === 'undefined') {
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// will be only called to set "arraybuffer"
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this.overrideMimeType('text/plain; charset=x-user-defined');
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}
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- if (typeof xhrPrototype.overrideMimeType === 'function') {
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+ if (typeof xhr.overrideMimeType === 'function') {
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Object.defineProperty(xhrPrototype, 'responseType',
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{ set: responseTypeSetter });
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}
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@@ -260,6 +195,7 @@ if (typeof PDFJS === 'undefined') {
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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 window) {
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return;
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@@ -285,7 +221,8 @@ if (typeof PDFJS === 'undefined') {
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};
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})();
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-// window.atob (base64 encode function) ?
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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 window) {
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return;
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@@ -318,7 +255,8 @@ if (typeof PDFJS === 'undefined') {
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};
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})();
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-// Function.prototype.bind ?
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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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@@ -335,6 +273,7 @@ if (typeof PDFJS === 'undefined') {
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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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var div = document.createElement('div');
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if ('dataset' in div) {
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@@ -372,6 +311,7 @@ if (typeof PDFJS === 'undefined') {
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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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var div = document.createElement('div');
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if ('classList' in div) {
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@@ -435,6 +375,9 @@ if (typeof PDFJS === 'undefined') {
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})();
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// Check console compatibility
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+// In older IE versions the console object is not available
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+// unless console is open.
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+// Support: IE<10
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(function checkConsoleCompatibility() {
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if (!('console' in window)) {
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window.console = {
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@@ -457,6 +400,7 @@ if (typeof PDFJS === 'undefined') {
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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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@@ -475,6 +419,7 @@ if (typeof PDFJS === 'undefined') {
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})();
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// Checks if possible to use URL.createObjectURL()
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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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@@ -504,6 +449,7 @@ if (typeof PDFJS === 'undefined') {
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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 = Object.prototype.toString.call(
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window.HTMLElement).indexOf('Constructor') > 0;
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@@ -511,6 +457,7 @@ if (typeof PDFJS === 'undefined') {
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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 regex = /Android\s[0-2][^\d]/;
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var isOldAndroid = regex.test(navigator.userAgent);
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@@ -520,12 +467,18 @@ if (typeof PDFJS === 'undefined') {
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})();
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// Check if the browser supports manipulation of the history.
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+// Support: IE<10, Android<4.2
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(function checkHistoryManipulation() {
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- if (!window.history.pushState) {
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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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PDFJS.disableHistory = true;
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}
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})();
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+// TODO CanvasPixelArray is deprecated; use Uint8ClampedArray
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+// once it's supported.
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(function checkSetPresenceInImageData() {
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if (window.CanvasPixelArray) {
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if (typeof window.CanvasPixelArray.prototype.set !== 'function') {
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@@ -538,39 +491,12 @@ if (typeof PDFJS === 'undefined') {
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}
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})();
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-(function checkStorages() {
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- // Feature test as per http://diveintohtml5.info/storage.html
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- // The additional localStorage call is to get around a FF quirk, see
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- // bug #495747 in bugzilla
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- try {
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- if ('localStorage' in window && window['localStorage'] !== null) {
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- return;
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- }
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- } catch (e) { }
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- // When the generic viewer is used in Firefox the following code will fail
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- // when the preference 'network.cookie.lifetimePolicy' is set to 1,
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- // see Mozilla bug 365772.
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- try {
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- window.localStorage = {
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- data: Object.create(null),
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- getItem: function (key) {
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- return this.data[key];
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- },
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- setItem: function (key, value) {
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- this.data[key] = value;
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- }
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- };
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- } catch (e) {
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- console.log('Unable to create polyfill for localStorage');
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- }
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-})();
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-
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+// Support: IE<10, Android<4.0, iOS<5.0
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(function checkRequestAnimationFrame() {
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if ('requestAnimationFrame' in window) {
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return;
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}
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- window.requestAnimationFrame =
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- window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame ||
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+ window.requestAnimationFrame = window.webkitRequestAnimationFrame ||
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(function fakeRequestAnimationFrame(callback) {
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window.setTimeout(callback, 20);
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});
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