kis-js/kis-lite-dom.js

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/**
Kis JS Keep It Simple JS Library
Copyright Timothy J. Warren
License Public Domain
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Version 0.6.0
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*/
(function (){
"use strict";
// Most functions rely on a string selector
// which returns html elements. This requires
// document.querySelectorAll or a custom
// selector engine. I choose to just use the
// browser feature, since it is present in
// IE 8+, and all other major browsers
if (typeof document.querySelector === "undefined")
{
return;
}
var $_, $, dcopy, sel;
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/**
* $_
*
* Constructor function
*
* @constuctor
* @namespace
* @param string selector
* @return object
*/
$_ = function(s)
{
//Have documentElement be default selector, just in case
if(typeof s === "undefined")
{
//Defines a "global" selector for that instance
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sel = (typeof $_.el !== "undefined")
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? $_.el
: document.documentElement;
}
else
{
sel = (typeof s !== "object") ? $(s) : s;
}
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// Add the selector to the prototype
$_.prototype.el = sel;
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// Use the $_ object as it's own prototype
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var self = dcopy($_);
// Give sel to each extension.
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for(var i in self)
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{
if(typeof self[i] === "object")
{
self[i].el = sel;
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}
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}
self.el = sel;
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return self;
};
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/**
* Simple DOM selector function
*
* @memberOf $_
* @param string selector
* @param object context
* @return object
* @type object
*/
$ = function (a, context)
{
var x, c;
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if (typeof a != "string" || typeof a === "undefined"){ return a;}
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//Check for a context of a specific element, otherwise, just run on the document
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c = (context != null && context.nodeType === 1)
? context
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: document;
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//Pick the quickest method for each kind of selector
if (a.match(/^#([\w\-]+$)/))
{
return document.getElementById(a.split('#')[1]);
}
else
{
x = c.querySelectorAll(a);
}
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//Return the single object if applicable
return (x.length === 1) ? x[0] : x;
};
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/**
* Deep copy/prototypical constructor function
*
* @param object obj
* @private
* @return object
* @type object
*/
dcopy = function(obj)
{
var type, F;
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if(typeof obj === "undefined")
{
return;
}
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if(typeof Object.create !== "undefined")
{
return Object.create(obj);
}
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type = typeof obj;
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if(type !== "object" && type !== "function")
{
return;
}
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/**
* @private
*/
F = function(){};
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F.prototype = obj;
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return new F();
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};
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/**
* Adds the property `obj` to the $_ object, calling it `name`
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*
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* @param string name
* @param object obj
*/
$_.ext = function(name, obj)
{
obj.el = sel;
$_[name] = obj;
};
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/**
* Iterates over a $_ object, applying a callback to each item
*
* @name $_.each
* @function
* @param function callback
*/
$_.ext('each', function (callback)
{
if(typeof sel.length !== "undefined" && sel !== window)
{
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// Use the native method, if it exists
if(typeof Array.prototype.forEach !== 'undefined')
{
[].forEach.call(sel, callback);
return;
}
// Otherwise, fall back to a for loop
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var len = sel.length;
if (len === 0)
{
return;
}
var selx;
for (var x = 0; x < len; x++)
{
selx = (sel.item(x)) ? sel.item(x) : sel[x];
callback.call(selx, selx);
}
}
else
{
callback.call(sel, sel);
}
});
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/**
* Retrieves the type of the passed variable
*
* @param mixed obj
* @return string
* @type string
*/
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$_.type = function(obj)
{
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if((function() {return obj && (obj !== this)}).call(obj))
{
//fallback on 'typeof' for truthy primitive values
return (typeof obj).toLowerCase();
}
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//Strip x from [object x] and return
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return ({}).toString.call(obj).match(/\s([a-z|A-Z]+)/)[1].toLowerCase();
};
//Set global variables
$_ = window.$_ = window.$_ || $_;
$_.$ = $;
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}());
// --------------------------------------------------------------------------
/**
* A module of various browser polyfills
* @file polyfill.js
*/
// Console.log polyfill for IE 8 stupidity
if(typeof window.console === "undefined")
{
window.console = {
log:function(){}
};
}
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// --------------------------------------------------------------------------
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/**
* String trim function polyfill
*/
if(typeof String.prototype.trim === "undefined")
{
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/**
* @private
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*/
String.prototype.trim = function()
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{
return this.replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, "");
};
}
// --------------------------------------------------------------------------
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/**
* event.preventDefault/e.stopPropagation polyfill
* @private
*/
if(typeof Event.preventDefault === "undefined" && typeof window.event !== "undefined")
{
Event.prototype.preventDefault = function()
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{
window.event.returnValue = false;
},
Event.prototype.stopPropagation = function()
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{
window.event.cancelBubble = true;
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}
}
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// --------------------------------------------------------------------------
/**
* Array.isArray polyfill
*/
if (typeof Array.isArray === "undefined")
{
Array.isArray = function(v)
{
return Object.prototype.toString.apply(v) === '[object Array]';
}
}
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// --------------------------------------------------------------------------
/**
* Ajax
*
* Module for making ajax requests
*/
(function (){
"use strict";
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// Don't bother even defining the object if the XMLHttpRequest isn't available
if(typeof window.XMLHttpRequest === "undefined")
{
return;
}
var ajax = {
_do: function (url, data, callback, isPost)
{
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var type,
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request = new XMLHttpRequest();
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if (typeof callback === "undefined")
{
/**
* @private
*/
callback = function (){};
}
type = (isPost) ? "POST" : "GET";
url += (type === "GET") ? "?"+this._serialize(data) : '';
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request.open(type, url);
request.onreadystatechange = function ()
{
if (request.readyState === 4)
{
callback(request.responseText);
}
};
if (type === "POST")
{
request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
request.send(this._serialize(data));
}
else
{
request.send(null);
}
},
_serialize: function (data)
{
var name,
value,
pairs = [];
for (name in data)
{
if (!data.hasOwnProperty(name))
{
continue;
}
if (typeof data[name] === "function")
{
continue;
}
value = data[name].toString();
name = encodeURIComponent(name);
value = encodeURIComponent(value);
pairs.push(name + "=" + value);
}
return pairs.join("&");
}
};
/**
* Sends a GET type ajax request
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*
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* @name get
* @function
* @memberOf $_
* @param string url
* @param object data
* @param function callback
*/
$_.ext('get', function (url, data, callback){
ajax._do(url, data, callback, false);
});
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/**
* Sends a POST type ajax request
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*
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* @name post
* @function
* @memberOf $_
* @param string url
* @param object data
* @param function callback
*/
$_.ext('post', function (url, data, callback){
ajax._do(url, data, callback, true);
});
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/**
* Watches for server-sent events, or falls back to ajax polling
* - defaults to 30 second intervals
*
* @name sse
* @function
* @memberOf $_
* @param string url
* @param function callback
* @param [int] 30000
*/
$_.ext('sse', function(url, callback, poll_rate){
var source;
//Check for server-sent event support
if (typeof EventSource !== 'undefined')
{
source = new EventSource(url);
// Apply the callback
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source.onmessage = function(event){
callback(event.data);
};
}
else // Ajax polling fallback
{
poll_rate = poll_rate || 30000;
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setInterval($_.get, poll_rate, url, {}, function(res){
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res.trim().replace(/data:/gim, '');
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res.replace(/^(event|id|retry)?\:(.*)$/gim, '');
callback.call(res, res);
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});
}
});
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}());
// --------------------------------------------------------------------------
/**
* Event
*
* Event api wrapper
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* @todo Add method for triggering events
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*/
(function (){
"use strict";
// Property name for expandos on DOM objects
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var kis_expando = "KIS_0_6_0";
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var _attach, _remove, _add_remove, e, _attach_delegate;
// Define the proper _attach and _remove functions
// based on browser support
if(typeof document.addEventListener !== "undefined")
{
/**
* @private
*/
_attach = function (sel, event, callback)
{
if(typeof sel.addEventListener !== "undefined")
{
// Duplicated events are dropped, per the specification
sel.addEventListener(event, callback, false);
}
};
/**
* @private
*/
_remove = function (sel, event, callback)
{
if(typeof sel.removeEventListener !== "undefined")
{
sel.removeEventListener(event, callback, false);
}
};
}
// typeof function doesn't work in IE where attachEvent is available: brute force it
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else if(typeof document.attachEvent !== "undefined")
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{
/**
* @private
*/
_attach = function (sel, event, callback)
{
function _listener () {
// Internet Explorer fails to correctly set the 'this' object
// for event listeners, so we need to set it ourselves.
callback.apply(arguments[0]);
}
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if (typeof sel.attachEvent !== "undefined")
{
_remove(event, callback); // Make sure we don't have duplicate listeners
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sel.attachEvent("on" + event, _listener);
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// Store our listener so we can remove it later
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var expando = sel[kis_expando] = sel[kis_expando] || {};
expando.listeners = expando.listeners || {};
expando.listeners[event] = expando.listeners[event] || [];
expando.listeners[event].push({
callback: callback,
_listener: _listener
});
}
else
{
console.log("Failed to _attach event:"+event+" on "+sel);
}
};
/**
* @private
*/
_remove = function (sel, event, callback)
{
if(typeof sel.detachEvent !== "undefined")
{
var expando = sel[kis_expando];
if (expando && expando.listeners
&& expando.listeners[event])
{
var listeners = expando.listeners[event];
var len = listeners.length;
for (var i=0; i<len; i++)
{
if (listeners[i].callback === callback)
{
sel.detachEvent("on" + event, listeners[i]._listener);
listeners.splice(i, 1);
if(listeners.length === 0)
{
delete expando.listeners[event];
}
return;
}
}
}
}
};
}
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_add_remove = function (sel, event, callback, add)
{
var i, len;
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if(typeof sel === "undefined")
{
console.log(arguments);
console.log(event);
return false;
}
// Multiple events? Run recursively!
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if ( ! event.match(/^([\w\-]+)$/))
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{
event = event.split(" ");
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len = event.length;
for (i = 0; i < len; i++)
{
_add_remove(sel, event[i], callback, add);
}
return;
}
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if(add === true)
{
_attach(sel, event, callback);
}
else
{
_remove(sel, event, callback);
}
};
_attach_delegate = function(sel, target, event, callback)
{
// attach the listener to the parent object
_add_remove(sel, event, function(e){
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var elem, t, tar;
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// IE 8 doesn't have event bound to element
e = e || window.event;
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// Get the live version of the target selector
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t = $_.$(target, sel);
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// Check each element to see if it matches the target
for(elem in t)
{
// IE 8 doesn't have target in the event object
tar = e.target || e.srcElement;
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// Fire target callback when event bubbles from target
if(tar == t[elem])
{
// Trigger the event callback
callback.call(t[elem], e);
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// Stop event propegation
e.stopPropagation();
}
}
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}, true);
};
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// --------------------------------------------------------------------------
/**
* Event Listener module
*
* @namespace
* @name event
* @memberOf $_
*/
e = {
/**
* Adds an event that returns a callback when triggered on the selected
* event and selector
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*
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* @memberOf $_.event
* @name add
* @function
* @example Eg. $_("#selector").event.add("click", do_something());
* @param string event
* @param function callback
*/
add: function (event, callback)
{
$_.each(function(e){
_add_remove(e, event, callback, true);
});
},
/**
* Removes an event bound the the specified selector, event type, and callback
*
* @memberOf $_.event
* @name remove
* @function
* @example Eg. $_("#selector").event.remove("click", do_something());
* @param string event
* @param string callback
*/
remove: function (event, callback)
{
$_.each(function(e){
_add_remove(e, event, callback, false);
});
},
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/**
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* Binds a persistent event to the document
*
* @memberOf $_.event
* @name live
* @function
* @example Eg. $_.event.live(".button", "click", do_something());
* @param string target
* @param string event
* @param function callback
*/
live: function (target, event, callback)
{
_attach_delegate(document.documentElement, target, event, callback);
},
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/**
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* Binds an event to a parent object
*
* @memberOf $_.event
* @name delegate
* @function
* @example Eg. $_("#parent").delegate(".button", "click", do_something());
* @param string target
* @param string event_type
* @param function callback
*/
delegate: function (target, event, callback)
{
$_.each(function(e){
_attach_delegate(e, target, event, callback);
});
}
};
$_.ext('event', e);
}());
// --------------------------------------------------------------------------
//This is used so IE 8 can use the classList api
/*
* classList.js: Cross-browser full element.classList implementation.
* 2011-06-15
*
* By Eli Grey, http://eligrey.com
* Public Domain.
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
*/
if (typeof document !== "undefined" && !("classList" in document.createElement("a")))
{
(function (view){
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var classListProp = "classList",
protoProp = "prototype",
elemCtrProto = (view.HTMLElement || view.Element)[protoProp],
objCtr = Object,
strTrim = String[protoProp].trim ||
function ()
{
return this.replace(/^\s+|\s+$/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
,
/**
* @private
*/
DOMEx = function (type, message)
{
this.name = type;
this.code = DOMException[type];
this.message = message;
},
/**
* @private
*/
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);
},
/**
* @private
*/
ClassList = function (elem)
{
var
trimmedClasses = strTrim.call(elem.className),
classes = trimmedClasses ? trimmedClasses.split(/\s+/) : [],
i = 0,
len = classes.length;
for (; i < len; i++)
{
this.push(classes[i]);
}
this._updateClassName = function ()
{
elem.className = this.toString();
};
},
classListProto = ClassList[protoProp] = [],
/**
* @private
*/
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 (token)
{
token += "";
if (checkTokenAndGetIndex(this, token) === -1)
{
this.push(token);
this._updateClassName();
}
};
classListProto.remove = function (token)
{
token += "";
var index = checkTokenAndGetIndex(this, token);
if (index !== -1)
{
this.splice(index, 1);
this._updateClassName();
}
};
classListProto.toggle = function (token)
{
token += "";
if (checkTokenAndGetIndex(this, token) === -1)
{
this.add(token);
}
else
{
this.remove(token);
}
};
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));
}
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/**
* DOM
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*
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* Dom manipulation module
*/
(function (){
"use strict";
var d;
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//Private function for getting/setting attributes/properties
function _attr(sel, name, value)
{
var oldVal, doAttr;
//Get the value of the attribute, if it exists
if (typeof sel.hasAttribute !== "undefined")
{
if (sel.hasAttribute(name))
{
oldVal = sel.getAttribute(name);
}
doAttr = true;
}
else if (typeof sel[name] !== "undefined")
{
oldVal = sel[name];
doAttr = false;
}
else if (name === "class" && typeof sel.className !== "undefined") //className attribute
{
name = "className";
oldVal = sel.className;
doAttr = false;
}
//Well, I guess that attribute doesn't exist
if (typeof oldVal === "undefined" && (typeof value === "undefined" || value === null))
{
console.log(value);
console.log(sel);
console.log("Element does not have the selected attribute");
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return null;
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}
//No value to set? Return the current value
if (typeof value === "undefined")
{
return oldVal;
}
//Determine what to do with the attribute
if (typeof value !== "undefined" && value !== null)
{
if(doAttr === true)
{
sel.setAttribute(name, value);
}
else
{
sel[name] = value;
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}
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}
else if (value === null)
{
if(doAttr === true)
{
sel.removeAttribute(name);
}
else
{
delete sel[name];
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}
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}
return (typeof value !== "undefined") ? value : oldVal;
}
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/**
* Change css property name to it's
* javascript camel case equivalent
*/
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function _toCamel(s)
{
return s.replace(/(\-[a-z])/g, function($1){
return $1.toUpperCase().replace('-','');
});
}
function _css(sel, prop, val)
{
var equi;
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//Camel-case
prop = _toCamel(prop);
//Equivalent properties for 'special' browsers
equi = {
outerHeight: "offsetHeight",
outerWidth: "offsetWidth",
top: "posTop"
};
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//If you don't define a value, try returning the existing value
if(typeof val === "undefined" && sel.style[prop] !== "undefined")
{
return sel.style[prop];
}
else if(typeof val === "undefined" && sel.style[equi[prop]] !== "undefined")
{
return sel.style[equi[prop]];
}
//Let's try the easy way first
if(typeof sel.style[prop] !== "undefined")
{
sel.style[prop] = val;
//Short circuit
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return null;
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}
else if(sel.style[equi[prop]])
{
sel.style[equi[prop]] = val;
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return null;
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}
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//No matches? Well, lets log it for now
console.log("Property " + prop + " nor an equivalent seems to exist");
}
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// --------------------------------------------------------------------------
/**
* DOM
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*
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* Dom manipulation module
* @namespace
* @memberOf $_
* @name dom
*/
d = {
/**
* Adds a class to the element(s) specified by the current
* selector
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*
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* @name addClass
* @memberOf $_.dom
* @function
* @param string class
*/
addClass: function (c)
{
$_.each(function (e){
e.classList.add(c);
});
},
/**
* Removes a class from the element(s) specified by the current
* selector
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*
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* @name removeClass
* @memberOf $_.dom
* @function
* @param string class
*/
removeClass: function (c)
{
$_.each(function (e){
e.classList.remove(c);
});
},
/**
* Hides the element(s) specified by the current selector
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*
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* @name hide
* @memberOf $_.dom
* @function
*/
hide: function ()
{
this.css('display', 'none');
},
/**
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* Shows the element(s) specified by the current selector.
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* if type is specified, the element will have it's style
* property set to "display:[your type]". If type is not
* specified, the element is set to "display:block".
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*
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* @name show
* @memberOf $_.dom
* @function
* @param [string] type
*/
show: function (type)
{
if (typeof type === "undefined")
{
type = "block";
}
this.css("display", type);
},
/**
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* Sets attributes on element(s) specified by the current
* selector, or, if name is not specified, returns the
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* value of the attribute of the element specified by the
* current selector.
*
* @name attr
* @memberOf $_.dom
* @function
* @param string name
* @param [string] value
* @return string
* @type string
*/
attr: function (name, value)
{
var sel = this.el;
//Make sure you don't try to get a bunch of elements
if (sel.length > 1 && typeof value === "undefined")
{
console.log(sel);
console.log("Must be a singular element");
return;
}
else if (sel.length > 1 && typeof value !== "undefined") //You can set a bunch, though
{
$_.each(function (e){
return _attr(e, name, value);
});
}
else //Normal behavior
{
return _attr(sel, name, value);
}
},
/**
* Sets or retrieves the text content of the element
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* specified by the current selector. If a value is
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* passed, it will set that value on the current element,
* otherwise it will return the value of the current element
*
* @name text
* @memberOf $_.dom
* @function
* @param [string] value
* @return string
* @type string
*/
text: function (value)
{
var oldValue, set, type, sel;
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sel = this.el;
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set = (typeof value !== "undefined") ? true : false;
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type = (typeof sel.textContent !== "undefined")
? "textContent"
: (typeof sel.innerText !== "undefined")
? "innerText"
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: "innerHTML";
oldValue = sel[type];
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if(set)
{
sel[type] = value;
return value;
}
else
{
return oldValue;
}
},
/**
* Sets or retrieves a css property of the element
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* specified by the current selector. If a value is
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* passed, it will set that value on the current element,
* otherwise it will return the value of the css property
* on the current element
*
* @name css
* @memberOf $_.dom
* @function
* @param string property
* @param [string] value
* @return string
* @type string
*/
css: function (prop, val)
{
//Return the current value if a value is not set
if(typeof val === "undefined")
{
return _css(this.el, prop);
}
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$_.each(function (e){
_css(e, prop, val);
});
},
/**
* Adds to the innerHTML of the current element, after the last child.
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*
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* @example $_("ul").dom.append("&lt;li&gt;&lt;/li&gt;") adds an li element to the end of the selected ul element
* @name append
* @memberOf $_.dom
* @function
* @param string htm
*/
append: function(htm)
{
if(typeof document.insertAdjacentHTML !== "undefined")
{
this.el.insertAdjacentHTML('beforeend', htm);
}
else
{
this.el.innerHTML += htm;
}
},
/**
* Adds to the innerHTML of the selected element, before the current children
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*
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* @name prepend
* @memberOf $_.dom
* @function
* @param string htm
*/
prepend: function(htm)
{
if(typeof document.insertAdjacentHTML !== "undefined")
{
this.el.insertAdjacentHTML('afterbegin', htm);
}
else
{
this.el.innerHTML = htm + this.el.innerHTML;
}
},
/**
* Sets or gets the innerHTML propery of the element(s) passed
*
* @name html
* @memberOf $_.dom
* @function
* @param [string] htm
* @return string
* @type string
*/
html: function(htm)
{
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if(typeof htm !== "undefined")
{
this.el.innerHTML = htm;
}
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//If the parameter is undefined, just return the current value
return this.el.innerHTML;
}
};
$_.ext('dom', d);
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}());