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Fix coding style in web/compatibility.js

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This commit is contained in:
Jonas Jenwald 2014-03-08 23:30:17 +01:00
parent 047a82a07e
commit 665b862b7f
1 changed files with 62 additions and 31 deletions
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93
web/compatibility.js
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@ -38,9 +38,9 @@ if (typeof PDFJS === 'undefined') {
}
// some mobile version might not support Float64Array
if (typeof Float64Array === 'undefined')
if (typeof Float64Array === 'undefined') {
window.Float64Array = Float32Array;
}
return;
}
@ -49,18 +49,21 @@ if (typeof PDFJS === 'undefined') {
}
function setArrayOffset(array, offset) {
if (arguments.length < 2)
if (arguments.length < 2) {
offset = 0;
for (var i = 0, n = array.length; i < n; ++i, ++offset)
}
for (var i = 0, n = array.length; i < n; ++i, ++offset) {
this[offset] = array[i] & 0xFF;
}
}
function TypedArray(arg1) {
var result;
if (typeof arg1 === 'number') {
result = [];
for (var i = 0; i < arg1; ++i)
for (var i = 0; i < arg1; ++i) {
result[i] = 0;
}
} else if ('slice' in arg1) {
result = arg1.slice(0);
} else {
@ -75,9 +78,9 @@ if (typeof PDFJS === 'undefined') {
result.byteLength = result.length;
result.set = setArrayOffset;
if (typeof arg1 === 'object' && arg1.buffer)
if (typeof arg1 === 'object' && arg1.buffer) {
result.buffer = arg1.buffer;
}
return result;
}
@ -101,8 +104,9 @@ if (typeof PDFJS === 'undefined') {
// Object.create() ?
(function checkObjectCreateCompatibility() {
if (typeof Object.create !== 'undefined')
if (typeof Object.create !== 'undefined') {
return;
}
Object.create = function objectCreate(proto) {
function Constructor() {}
@ -127,15 +131,19 @@ if (typeof PDFJS === 'undefined') {
} catch (e) {
definePropertyPossible = false;
}
if (definePropertyPossible) return;
if (definePropertyPossible) {
return;
}
}
Object.defineProperty = function objectDefineProperty(obj, name, def) {
delete obj[name];
if ('get' in def)
if ('get' in def) {
obj.__defineGetter__(name, def['get']);
if ('set' in def)
}
if ('set' in def) {
obj.__defineSetter__(name, def['set']);
}
if ('value' in def) {
obj.__defineSetter__(name, function objectDefinePropertySetter(value) {
this.__defineGetter__(name, function objectDefinePropertyGetter() {
@ -150,14 +158,16 @@ if (typeof PDFJS === 'undefined') {
// Object.keys() ?
(function checkObjectKeysCompatibility() {
if (typeof Object.keys !== 'undefined')
if (typeof Object.keys !== 'undefined') {
return;
}
Object.keys = function objectKeys(obj) {
var result = [];
for (var i in obj) {
if (obj.hasOwnProperty(i))
if (obj.hasOwnProperty(i)) {
result.push(i);
}
}
return result;
};
@ -165,12 +175,14 @@ if (typeof PDFJS === 'undefined') {
// No readAsArrayBuffer ?
(function checkFileReaderReadAsArrayBuffer() {
if (typeof FileReader === 'undefined')
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)
if ('readAsArrayBuffer' in frPrototype) {
return; // readAsArrayBuffer is implemented
}
Object.defineProperty(frPrototype, 'readAsArrayBuffer', {
value: function fileReaderReadAsArrayBuffer(blob) {
var fileReader = new FileReader();
@ -180,8 +192,9 @@ if (typeof PDFJS === 'undefined') {
var buffer = new ArrayBuffer(data.length);
var uint8Array = new Uint8Array(buffer);
for (var i = 0, ii = data.length; i < ii; i++)
for (var i = 0, ii = data.length; i < ii; i++) {
uint8Array[i] = data.charCodeAt(i);
}
Object.defineProperty(originalReader, 'result', {
value: buffer,
@ -211,8 +224,9 @@ if (typeof PDFJS === 'undefined') {
if ('response' in xhrPrototype ||
'mozResponseArrayBuffer' in xhrPrototype ||
'mozResponse' in xhrPrototype ||
'responseArrayBuffer' in xhrPrototype)
'responseArrayBuffer' in xhrPrototype) {
return;
}
// IE9 ?
if (typeof VBArray !== 'undefined') {
Object.defineProperty(xhrPrototype, 'response', {
@ -236,8 +250,9 @@ if (typeof PDFJS === 'undefined') {
var text = this.responseText;
var i, n = text.length;
var result = new Uint8Array(n);
for (i = 0; i < n; ++i)
for (i = 0; i < n; ++i) {
result[i] = text.charCodeAt(i) & 0xFF;
}
return result;
}
Object.defineProperty(xhrPrototype, 'response', { get: responseGetter });
@ -245,8 +260,9 @@ if (typeof PDFJS === 'undefined') {
// window.btoa (base64 encode function) ?
(function checkWindowBtoaCompatibility() {
if ('btoa' in window)
if ('btoa' in window) {
return;
}
var digits =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
@ -270,15 +286,18 @@ if (typeof PDFJS === 'undefined') {
// window.atob (base64 encode function) ?
(function checkWindowAtobCompatibility() {
if ('atob' in window)
if ('atob' in window) {
return;
}
// https://github.com/davidchambers/Base64.js
var digits =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
window.atob = function (input) {
input = input.replace(/=+$/, '');
if (input.length % 4 == 1) throw new Error('bad atob input');
if (input.length % 4 == 1) {
throw new Error('bad atob input');
}
for (
// initialize result and counters
var bc = 0, bs, buffer, idx = 0, output = '';
@ -300,8 +319,9 @@ if (typeof PDFJS === 'undefined') {
// Function.prototype.bind ?
(function checkFunctionPrototypeBindCompatibility() {
if (typeof Function.prototype.bind !== 'undefined')
if (typeof Function.prototype.bind !== 'undefined') {
return;
}
Function.prototype.bind = function functionPrototypeBind(obj) {
var fn = this, headArgs = Array.prototype.slice.call(arguments, 1);
@ -316,21 +336,26 @@ if (typeof PDFJS === 'undefined') {
// HTMLElement dataset property
(function checkDatasetProperty() {
var div = document.createElement('div');
if ('dataset' in div)
if ('dataset' in div) {
return; // dataset property exists
}
Object.defineProperty(HTMLElement.prototype, 'dataset', {
get: function() {
if (this._dataset)
if (this._dataset) {
return this._dataset;
}
var dataset = {};
for (var j = 0, jj = this.attributes.length; j < jj; j++) {
var attribute = this.attributes[j];
if (attribute.name.substring(0, 5) != 'data-')
if (attribute.name.substring(0, 5) != 'data-') {
continue;
}
var key = attribute.name.substring(5).replace(/\-([a-z])/g,
function(all, ch) { return ch.toUpperCase(); });
function(all, ch) {
return ch.toUpperCase();
});
dataset[key] = attribute.value;
}
@ -348,18 +373,23 @@ if (typeof PDFJS === 'undefined') {
// HTMLElement classList property
(function checkClassListProperty() {
var div = document.createElement('div');
if ('classList' in div)
if ('classList' in div) {
return; // classList property exists
}
function changeList(element, itemName, add, remove) {
var s = element.className || '';
var list = s.split(/\s+/g);
if (list[0] === '') list.shift();
if (list[0] === '') {
list.shift();
}
var index = list.indexOf(itemName);
if (index < 0 && add)
if (index < 0 && add) {
list.push(itemName);
if (index >= 0 && remove)
}
if (index >= 0 && remove) {
list.splice(index, 1);
}
element.className = list.join(' ');
return (index >= 0);
}
@ -381,8 +411,9 @@ if (typeof PDFJS === 'undefined') {
Object.defineProperty(HTMLElement.prototype, 'classList', {
get: function() {
if (this._classList)
if (this._classList) {
return this._classList;
}
var classList = Object.create(classListPrototype, {
element: {