Polyfill classList api for browsers lacking support

This commit is contained in:
Timothy Warren 2016-02-09 20:57:40 -05:00
parent 12d05dd71a
commit 0b6269edd6
2 changed files with 228 additions and 3 deletions

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@ -18,10 +18,8 @@
*/ */
return [ return [
'base' => [ 'base' => [
'base/classList.js',
'base/AnimeClient.js', 'base/AnimeClient.js',
//'base/base.js',
//'base/event.js',
//'base/ajax.js',
], ],
'event' => [ 'event' => [
'base/events.js', 'base/events.js',

227
public/js/base/classList.js Normal file
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@ -0,0 +1,227 @@
/*
* classList.js: Cross-browser full element.classList implementation.
* 2014-07-23
*
* By Eli Grey, http://eligrey.com
* Public Domain.
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
*/
/*global self, document, DOMException */
/*! @source http://purl.eligrey.com/github/classList.js/blob/master/classList.js*/
if ("document" in self) {
// Full polyfill for browsers with no classList support
if (!("classList" in document.createElement("_"))) {
(function(view) {
"use strict";
if (!('Element' in view)) return;
var
classListProp = "classList",
protoProp = "prototype",
elemCtrProto = view.Element[protoProp],
objCtr = Object,
strTrim = String[protoProp].trim || function() {
return this.replace(/^\s+|\s+$/g, "");
},
arrIndexOf = Array[protoProp].indexOf || function(item) {
var
i = 0,
len = this.length;
for (; i < len; i++) {
if (i in this && this[i] === item) {
return i;
}
}
return -1;
}
// Vendors: please allow content code to instantiate DOMExceptions
,
DOMEx = function(type, message) {
this.name = type;
this.code = DOMException[type];
this.message = message;
},
checkTokenAndGetIndex = function(classList, token) {
if (token === "") {
throw new DOMEx(
"SYNTAX_ERR", "An invalid or illegal string was specified"
);
}
if (/\s/.test(token)) {
throw new DOMEx(
"INVALID_CHARACTER_ERR", "String contains an invalid character"
);
}
return arrIndexOf.call(classList, token);
},
ClassList = function(elem) {
var
trimmedClasses = strTrim.call(elem.getAttribute("class") || ""),
classes = trimmedClasses ? trimmedClasses.split(/\s+/) : [],
i = 0,
len = classes.length;
for (; i < len; i++) {
this.push(classes[i]);
}
this._updateClassName = function() {
elem.setAttribute("class", this.toString());
};
},
classListProto = ClassList[protoProp] = [],
classListGetter = function() {
return new ClassList(this);
};
// Most DOMException implementations don't allow calling DOMException's toString()
// on non-DOMExceptions. Error's toString() is sufficient here.
DOMEx[protoProp] = Error[protoProp];
classListProto.item = function(i) {
return this[i] || null;
};
classListProto.contains = function(token) {
token += "";
return checkTokenAndGetIndex(this, token) !== -1;
};
classListProto.add = function() {
var
tokens = arguments,
i = 0,
l = tokens.length,
token, updated = false;
do {
token = tokens[i] + "";
if (checkTokenAndGetIndex(this, token) === -1) {
this.push(token);
updated = true;
}
}
while (++i < l);
if (updated) {
this._updateClassName();
}
};
classListProto.remove = function() {
var
tokens = arguments,
i = 0,
l = tokens.length,
token, updated = false,
index;
do {
token = tokens[i] + "";
index = checkTokenAndGetIndex(this, token);
while (index !== -1) {
this.splice(index, 1);
updated = true;
index = checkTokenAndGetIndex(this, token);
}
}
while (++i < l);
if (updated) {
this._updateClassName();
}
};
classListProto.toggle = function(token, force) {
token += "";
var
result = this.contains(token),
method = result ?
force !== true && "remove" :
force !== false && "add";
if (method) {
this[method](token);
}
if (force === true || force === false) {
return force;
} else {
return !result;
}
};
classListProto.toString = function() {
return this.join(" ");
};
if (objCtr.defineProperty) {
var classListPropDesc = {
get: classListGetter,
enumerable: true,
configurable: true
};
try {
objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc);
} catch (ex) { // IE 8 doesn't support enumerable:true
if (ex.number === -0x7FF5EC54) {
classListPropDesc.enumerable = false;
objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc);
}
}
} else if (objCtr[protoProp].__defineGetter__) {
elemCtrProto.__defineGetter__(classListProp, classListGetter);
}
}(self));
} else {
// There is full or partial native classList support, so just check if we need
// to normalize the add/remove and toggle APIs.
(function() {
"use strict";
var testElement = document.createElement("_");
testElement.classList.add("c1", "c2");
// Polyfill for IE 10/11 and Firefox <26, where classList.add and
// classList.remove exist but support only one argument at a time.
if (!testElement.classList.contains("c2")) {
var createMethod = function(method) {
var original = DOMTokenList.prototype[method];
DOMTokenList.prototype[method] = function(token) {
var i, len = arguments.length;
for (i = 0; i < len; i++) {
token = arguments[i];
original.call(this, token);
}
};
};
createMethod('add');
createMethod('remove');
}
testElement.classList.toggle("c3", false);
// Polyfill for IE 10 and Firefox <24, where classList.toggle does not
// support the second argument.
if (testElement.classList.contains("c3")) {
var _toggle = DOMTokenList.prototype.toggle;
DOMTokenList.prototype.toggle = function(token, force) {
if (1 in arguments && !this.contains(token) === !force) {
return force;
} else {
return _toggle.call(this, token);
}
};
}
testElement = null;
}());
}
}