kis-js/kis-lite.js

637 lines
12 KiB
JavaScript
Executable File

/**
Kis JS Keep It Simple JS Library
Copyright Timothy J. Warren
License Public Domain
Version 0.5.0
*/
(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;
/**
* $_
*
* 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
sel = (typeof $_.el !== "undefined")
? $_.el
: document.documentElement;
}
else
{
sel = (typeof s !== "object") ? $(s) : s;
}
// Add the selector to the prototype
$_.prototype.el = sel;
// Make a copy before adding properties
var self = dcopy($_);
// Give sel to each extension.
for(var i in self)
{
if(typeof self[i] === "object")
{
self[i].el = sel;
}
}
self.el = sel;
return self;
};
/**
* Simple DOM selector function
*
* @memberOf $_
* @param string selector
* @param object context
* @return object
* @type object
*/
$ = function (a, context)
{
var x, c;
if (typeof a != "string" || typeof a === "undefined"){ return a;}
//Check for a context of a specific element, otherwise, just run on the document
c = (context != null && context.nodeType === 1)
? context
: document;
//Pick the quickest method for each kind of selector
if (a.match(/^#([\w\-]+$)/))
{
return document.getElementById(a.split('#')[1]);
}
else
{
x = c.querySelectorAll(a);
}
//Return the single object if applicable
return (x.length === 1) ? x[0] : x;
};
/**
* Deep copy/prototypical constructor function
*
* @param object obj
* @private
* @return object
* @type object
*/
dcopy = function(obj)
{
var type, F;
if(typeof obj === "undefined")
{
return;
}
if(typeof Object.create !== "undefined")
{
return Object.create(obj);
}
type = typeof obj;
if(type !== "object" && type !== "function")
{
return;
}
/**
* @private
*/
F = function(){};
F.prototype = obj;
return new F();
};
/**
* Adds the property `obj` to the $_ object, calling it `name`
*
* @param string name
* @param object obj
*/
$_.ext = function(name, obj)
{
obj.el = sel;
$_[name] = obj;
};
/**
* 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)
{
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);
}
});
/**
* Retrieves the type of the passed variable
*
* @param mixed obj
* @return string
* @type string
*/
$_.type = function(obj)
{
if((function() {return obj && (obj !== this)}).call(obj))
{
//fallback on 'typeof' for truthy primitive values
return (typeof obj).toLowerCase();
}
//Strip x from [object x] and return
return ({}).toString.call(obj).match(/\s([a-z|A-Z]+)/)[1].toLowerCase();
};
//Set global variables
$_ = window.$_ = window.$_ || $_;
$_.$ = $;
}());
// --------------------------------------------------------------------------
/**
* A module of various browser polyfills
* @file polyfill.js
*/
(function(){
"use strict";
// Console.log polyfill for IE 8 stupidity
if(typeof window.console === "undefined")
{
window.console = {
log:function(){}
};
}
// --------------------------------------------------------------------------
/**
* String trim function polyfill
*/
if(typeof String.prototype.trim === "undefined")
{
/**
* @private
*/
String.prototype.trim = function()
{
return this.replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, "");
};
}
// --------------------------------------------------------------------------
/**
* event.preventDefault/e.stopPropagation polyfill
* @private
*/
if(typeof Event.preventDefault === "undefined" && typeof window.event !== "undefined")
{
Event.prototype.preventDefault = function()
{
window.event.returnValue = false;
},
Event.prototype.stopPropagation = function()
{
window.event.cancelBubble = true;
}
}
}());
// --------------------------------------------------------------------------
/**
* Ajax
*
* Module for making ajax requests
*/
(function (){
"use strict";
// 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)
{
var type,
request = new XMLHttpRequest();
if (typeof callback === "undefined")
{
/**
* @private
*/
callback = function (){};
}
type = (isPost) ? "POST" : "GET";
url += (type === "GET") ? "?"+this._serialize(data) : '';
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
*
* @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);
});
/**
* Sends a POST type ajax request
*
* @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);
});
}());
// --------------------------------------------------------------------------
/**
* Event
*
* Event api wrapper
*/
(function (){
"use strict";
// Property name for expandos on DOM objects
var kis_expando = "KIS_0_5_0";
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
else if(typeof document.attachEvent !== "undefined")
{
/**
* @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]);
}
if (typeof sel.attachEvent !== "undefined")
{
_remove(event, callback); // Make sure we don't have duplicate listeners
sel.attachEvent("on" + event, _listener);
// Store our listener so we can remove it later
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;
}
}
}
}
};
}
_add_remove = function (sel, event, callback, add)
{
var i, len;
if(typeof sel === "undefined")
{
console.log(arguments);
console.log(event);
return false;
}
// Multiple events? Run recursively!
if ( ! event.match(/^([\w\-]+)$/))
{
event = event.split(" ");
len = event.length;
for (i = 0; i < len; i++)
{
_add_remove(sel, event[i], callback, add);
}
return;
}
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){
var elem, t, tar;
// IE 8 doesn't have event bound to element
e = e || window.event;
// Get the live version of the target selector
t = $_.$(target, sel);
// 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;
// Fire target callback when event bubbles from target
if(tar == t[elem])
{
// Trigger the event callback
callback.call(t[elem], e);
// Stop event propegation
e.stopPropagation();
}
}
}, true);
};
// --------------------------------------------------------------------------
/**
* Event Listener module
*
* @namespace
* @name event
* @memberOf $_
*/
e = {
/**
* Adds an event that returns a callback when triggered on the selected
* event and selector
*
* @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);
});
},
/**
* 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);
},
/**
* 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);
}());