/*
Copyright (c) 2007 Brian Dillard and Brad Neuberg:
Brian Dillard | Project Lead | bdillard@pathf.com | http://blogs.pathf.com/agileajax/
Brad Neuberg | Original Project Creator | http://codinginparadise.org
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
dhtmlHistory: An object that provides history, history data, and bookmarking for DHTML and Ajax applications.
dependencies:
* the historyStorage object included in this file.
*/
window.dhtmlHistory = {
/*Public: User-agent booleans*/
isIE: false,
isOpera: false,
isSafari: false,
isKonquerer: false,
isGecko: false,
isSupported: false,
/*Public: Create the DHTML history infrastructure*/
create: function(options) {
/*
options - object to store initialization parameters
options.debugMode - boolean that causes hidden form fields to be shown for development purposes.
options.toJSON - function to override default JSON stringifier
options.fromJSON - function to override default JSON parser
*/
var that = this;
/*set user-agent flags*/
var UA = navigator.userAgent.toLowerCase();
var platform = navigator.platform.toLowerCase();
var vendor = navigator.vendor || "";
if (vendor === "KDE") {
this.isKonqueror = true;
this.isSupported = false;
} else if (typeof window.opera !== "undefined") {
this.isOpera = true;
this.isSupported = true;
} else if (typeof document.all !== "undefined") {
this.isIE = true;
this.isSupported = true;
} else if (vendor.indexOf("Apple Computer, Inc.") > -1) {
this.isSafari = true;
this.isSupported = (platform.indexOf("mac") > -1);
} else if (UA.indexOf("gecko") != -1) {
this.isGecko = true;
this.isSupported = true;
}
/*Set up the historyStorage object; pass in init parameters*/
window.historyStorage.setup(options);
/*Execute browser-specific setup methods*/
if (this.isSafari) {
this.createSafari();
} else if (this.isOpera) {
this.createOpera();
}
/*Get our initial location*/
var initialHash = this.getCurrentLocation();
/*Save it as our current location*/
this.currentLocation = initialHash;
/*Now that we have a hash, create IE-specific code*/
if (this.isIE) {
this.createIE(initialHash);
}
/*Add an unload listener for the page; this is needed for FF 1.5+ because this browser caches all dynamic updates to the
page, which can break some of our logic related to testing whether this is the first instance a page has loaded or whether
it is being pulled from the cache*/
var unloadHandler = function() {
that.firstLoad = null;
};
this.addEventListener(window,'unload',unloadHandler);
/*Determine if this is our first page load; for IE, we do this in this.iframeLoaded(), which is fired on pageload. We do it
there because we have no historyStorage at this point, which only exists after the page is finished loading in IE*/
if (this.isIE) {
/*The iframe will get loaded on page load, and we want to ignore this fact*/
this.ignoreLocationChange = true;
} else {
if (!historyStorage.hasKey(this.PAGELOADEDSTRING)) {
/*This is our first page load, so ignore the location change and add our special history entry*/
this.ignoreLocationChange = true;
this.firstLoad = true;
historyStorage.put(this.PAGELOADEDSTRING, true);
} else {
/*This isn't our first page load, so indicate that we want to pay attention to this location change*/
this.ignoreLocationChange = false;
/*For browsers other than IE, fire a history change event; on IE, the event will be thrown automatically when its
hidden iframe reloads on page load. Unfortunately, we don't have any listeners yet; indicate that we want to fire
an event when a listener is added.*/
this.fireOnNewListener = true;
}
}
/*Other browsers can use a location handler that checks at regular intervals as their primary mechanism; we use it for IE as
well to handle an important edge case; see checkLocation() for details*/
var locationHandler = function() {
that.checkLocation();
};
setInterval(locationHandler, 100);
},
/*Public: Initialize our DHTML history. You must call this after the page is finished loading.*/
initialize: function() {
/*IE needs to be explicitly initialized. IE doesn't autofill form data until the page is finished loading, so we have to wait*/
if (this.isIE) {
/*If this is the first time this page has loaded*/
if (!historyStorage.hasKey(this.PAGELOADEDSTRING)) {
/*For IE, we do this in initialize(); for other browsers, we do it in create()*/
this.fireOnNewListener = false;
this.firstLoad = true;
historyStorage.put(this.PAGELOADEDSTRING, true);
}
/*Else if this is a fake onload event*/
else {
this.fireOnNewListener = true;
this.firstLoad = false;
}
}
},
/*Public: Adds a history change listener. Note that only one listener is supported at this time.*/
addListener: function(listener) {
this.listener = listener;
/*If the page was just loaded and we should not ignore it, fire an event to our new listener now*/
if (this.fireOnNewListener) {
this.fireHistoryEvent(this.currentLocation);
this.fireOnNewListener = false;
}
},
/*Public: Generic utility function for attaching events*/
addEventListener: function(o,e,l) {
if (o.addEventListener) {
o.addEventListener(e,l,false);
} else if (o.attachEvent) {
o.attachEvent('on'+e,function() {
l(window.event);
});
}
},
/*Public: Add a history point.*/
add: function(newLocation, historyData) {
if (this.isSafari) {
/*Remove any leading hash symbols on newLocation*/
newLocation = this.removeHash(newLocation);
/*Store the history data into history storage*/
historyStorage.put(newLocation, historyData);
/*Save this as our current location*/
this.currentLocation = newLocation;
/*Change the browser location*/
window.location.hash = newLocation;
/*Save this to the Safari form field*/
this.putSafariState(newLocation);
} else {
/*Most browsers require that we wait a certain amount of time before changing the location, such
as 200 MS; rather than forcing external callers to use window.setTimeout to account for this,
we internally handle it by putting requests in a queue.*/
var that = this;
var addImpl = function() {
/*Indicate that the current wait time is now less*/
if (that.currentWaitTime > 0) {
that.currentWaitTime = that.currentWaitTime - that.waitTime;
}
/*Remove any leading hash symbols on newLocation*/
newLocation = that.removeHash(newLocation);
/*IE has a strange bug; if the newLocation is the same as _any_ preexisting id in the
document, then the history action gets recorded twice; throw a programmer exception if
there is an element with this ID*/
if (document.getElementById(newLocation) && that.debugMode) {
var e = "Exception: History locations can not have the same value as _any_ IDs that might be in the document,"
+ " due to a bug in IE; please ask the developer to choose a history location that does not match any HTML"
+ " IDs in this document. The following ID is already taken and cannot be a location: " + newLocation;
throw new Error(e);
}
/*Store the history data into history storage*/
historyStorage.put(newLocation, historyData);
/*Indicate to the browser to ignore this upcomming location change since we're making it programmatically*/
that.ignoreLocationChange = true;
/*Indicate to IE that this is an atomic location change block*/
that.ieAtomicLocationChange = true;
/*Save this as our current location*/
that.currentLocation = newLocation;
/*Change the browser location*/
window.location.hash = newLocation;
/*Change the hidden iframe's location if on IE*/
if (that.isIE) {
that.iframe.src = "/blank.html?" + newLocation;
}
/*End of atomic location change block for IE*/
that.ieAtomicLocationChange = false;
};
/*Now queue up this add request*/
window.setTimeout(addImpl, this.currentWaitTime);
/*Indicate that the next request will have to wait for awhile*/
this.currentWaitTime = this.currentWaitTime + this.waitTime;
}
},
/*Public*/
isFirstLoad: function() {
return this.firstLoad;
},
/*Public*/
getVersion: function() {
return "0.6";
},
/*Get browser's current hash location; for Safari, read value from a hidden form field*/
/*Public*/
getCurrentLocation: function() {
var r = (this.isSafari
? this.getSafariState()
: this.getCurrentHash()
);
return r;
},
/*Public: Manually parse the current url for a hash; tip of the hat to YUI*/
getCurrentHash: function() {
var r = window.location.href;
var i = r.indexOf("#");
return (i >= 0
? r.substr(i+1)
: ""
);
},
/*- - - - - - - - - - - -*/
/*Private: Constant for our own internal history event called when the page is loaded*/
PAGELOADEDSTRING: "DhtmlHistory_pageLoaded",
/*Private: Our history change listener.*/
listener: null,
/*Private: MS to wait between add requests - will be reset for certain browsers*/
waitTime: 200,
/*Private: MS before an add request can execute*/
currentWaitTime: 0,
/*Private: Our current hash location, without the "#" symbol.*/
currentLocation: null,
/*Private: Hidden iframe used to IE to detect history changes*/
iframe: null,
/*Private: Flags and DOM references used only by Safari*/
safariHistoryStartPoint: null,
safariStack: null,
safariLength: null,
/*Private: Flag used to keep checkLocation() from doing anything when it discovers location changes we've made ourselves
programmatically with the add() method. Basically, add() sets this to true. When checkLocation() discovers it's true,
it refrains from firing our listener, then resets the flag to false for next cycle. That way, our listener only gets fired on
history change events triggered by the user via back/forward buttons and manual hash changes. This flag also helps us set up
IE's special iframe-based method of handling history changes.*/
ignoreLocationChange: null,
/*Private: A flag that indicates that we should fire a history change event when we are ready, i.e. after we are initialized and
we have a history change listener. This is needed due to an edge case in browsers other than IE; if you leave a page entirely
then return, we must fire this as a history change event. Unfortunately, we have lost all references to listeners from earlier,
because JavaScript clears out.*/
fireOnNewListener: null,
/*Private: A variable that indicates whether this is the first time this page has been loaded. If you go to a web page, leave it
for another one, and then return, the page's onload listener fires again. We need a way to differentiate between the first page
load and subsequent ones. This variable works hand in hand with the pageLoaded variable we store into historyStorage.*/
firstLoad: null,
/*Private: A variable to handle an important edge case in IE. In IE, if a user manually types an address into their browser's
location bar, we must intercept this by calling checkLocation() at regular intervals. However, if we are programmatically
changing the location bar ourselves using the add() method, we need to ignore these changes in checkLocation(). Unfortunately,
these changes take several lines of code to complete, so for the duration of those lines of code, we set this variable to true.
That signals to checkLocation() to ignore the change-in-progress. Once we're done with our chunk of location-change code in
add(), we set this back to false. We'll do the same thing when capturing user-entered address changes in checkLocation itself.*/
ieAtomicLocationChange: null,
/*Private: Create IE-specific DOM nodes and overrides*/
createIE: function(initialHash) {
/*write out a hidden iframe for IE and set the amount of time to wait between add() requests*/
this.waitTime = 400;/*IE needs longer between history updates*/
var styles = (historyStorage.debugMode
? 'width: 800px;height:80px;border:1px solid black;'
: historyStorage.hideStyles
);
var iframeID = "rshHistoryFrame";
var iframeHTML = '';
document.write(iframeHTML);
this.iframe = document.getElementById(iframeID);
},
/*Private: Create Opera-specific DOM nodes and overrides*/
createOpera: function() {
this.waitTime = 400;/*Opera needs longer between history updates*/
var imgHTML = ';\';)
';
document.write(imgHTML);
},
/*Private: Create Safari-specific DOM nodes and overrides*/
createSafari: function() {
var formID = "rshSafariForm";
var stackID = "rshSafariStack";
var lengthID = "rshSafariLength";
var formStyles = historyStorage.debugMode ? historyStorage.showStyles : historyStorage.hideStyles;
var inputStyles = (historyStorage.debugMode
? 'width:800px;height:20px;border:1px solid black;margin:0;padding:0;'
: historyStorage.hideStyles
);
var safariHTML = '';
document.write(safariHTML);
this.safariStack = document.getElementById(stackID);
this.safariLength = document.getElementById(lengthID);
if (!historyStorage.hasKey(this.PAGELOADEDSTRING)) {
this.safariHistoryStartPoint = history.length;
this.safariLength.value = this.safariHistoryStartPoint;
} else {
this.safariHistoryStartPoint = this.safariLength.value;
}
},
/*Private: Safari method to read the history stack from a hidden form field*/
getSafariStack: function() {
var r = this.safariStack.value;
return historyStorage.fromJSON(r);
},
/*Private: Safari method to read from the history stack*/
getSafariState: function() {
var stack = this.getSafariStack();
var state = stack[history.length - this.safariHistoryStartPoint - 1];
return state;
},
/*Private: Safari method to write the history stack to a hidden form field*/
putSafariState: function(newLocation) {
var stack = this.getSafariStack();
stack[history.length - this.safariHistoryStartPoint] = newLocation;
this.safariStack.value = historyStorage.toJSON(stack);
},
/*Private: Notify the listener of new history changes.*/
fireHistoryEvent: function(newHash) {
/*extract the value from our history storage for this hash*/
var historyData = historyStorage.get(newHash);
/*call our listener*/
this.listener.call(null, newHash, historyData);
},
/*Private: See if the browser has changed location. This is the primary history mechanism for Firefox. For IE, we use this to
handle an important edge case: if a user manually types in a new hash value into their IE location bar and press enter, we want to
to intercept this and notify any history listener.*/
checkLocation: function() {
/*Ignore any location changes that we made ourselves for browsers other than IE*/
if (!this.isIE && this.ignoreLocationChange) {
this.ignoreLocationChange = false;
return;
}
/*If we are dealing with IE and we are in the middle of making a location change from an iframe, ignore it*/
if (!this.isIE && this.ieAtomicLocationChange) {
return;
}
/*Get hash location*/
var hash = this.getCurrentLocation();
/*Do nothing if there's been no change*/
if (hash == this.currentLocation) {
return;
}
/*In IE, users manually entering locations into the browser; we do this by comparing the browser's location against the
iframe's location; if they differ, we are dealing with a manual event and need to place it inside our history, otherwise
we can return*/
this.ieAtomicLocationChange = true;
if (this.isIE && this.getIframeHash() != hash) {
this.iframe.src = "/blank.html?" + hash;
}
else if (this.isIE) {
/*the iframe is unchanged*/
return;
}
/*Save this new location*/
this.currentLocation = hash;
this.ieAtomicLocationChange = false;
/*Notify listeners of the change*/
this.fireHistoryEvent(hash);
},
/*Private: Get the current location of IE's hidden iframe.*/
getIframeHash: function() {
var doc = this.iframe.contentWindow.document;
var hash = String(doc.location.search);
if (hash.length == 1 && hash.charAt(0) == "?") {
hash = "";
}
else if (hash.length >= 2 && hash.charAt(0) == "?") {
hash = hash.substring(1);
}
return hash;
},
/*Private: Remove any leading hash that might be on a location.*/
removeHash: function(hashValue) {
var r;
if (hashValue === null || hashValue === undefined) {
r = null;
}
else if (hashValue === "") {
r = "";
}
else if (hashValue.length == 1 && hashValue.charAt(0) == "#") {
r = "";
}
else if (hashValue.length > 1 && hashValue.charAt(0) == "#") {
r = hashValue.substring(1);
}
else {
r = hashValue;
}
return r;
},
/*Private: For IE, tell when the hidden iframe has finished loading.*/
iframeLoaded: function(newLocation) {
/*ignore any location changes that we made ourselves*/
if (this.ignoreLocationChange) {
this.ignoreLocationChange = false;
return;
}
/*Get the new location*/
var hash = String(newLocation.search);
if (hash.length == 1 && hash.charAt(0) == "?") {
hash = "";
}
else if (hash.length >= 2 && hash.charAt(0) == "?") {
hash = hash.substring(1);
}
/*Keep the browser location bar in sync with the iframe hash*/
window.location.hash = hash;
/*Notify listeners of the change*/
this.fireHistoryEvent(hash);
}
};
/*
historyStorage: An object that uses a hidden form to store history state across page loads. The mechanism for doing so relies on
the fact that browsers save the text in form data for the life of the browser session, which means the text is still there when
the user navigates back to the page. This object can be used independently of the dhtmlHistory object for caching of Ajax
session information.
dependencies:
* json2007.js (included in a separate file) or alternate JSON methods passed in through an options bundle.
*/
window.historyStorage = {
/*Public: Set up our historyStorage object for use by dhtmlHistory or other objects*/
setup: function(options) {
/*
options - object to store initialization parameters - passed in from dhtmlHistory or directly into historyStorage
options.debugMode - boolean that causes hidden form fields to be shown for development purposes.
options.toJSON - function to override default JSON stringifier
options.fromJSON - function to override default JSON parser
*/
/*process init parameters*/
if (typeof options !== "undefined") {
if (options.debugMode) {
this.debugMode = options.debugMode;
}
if (options.toJSON) {
this.toJSON = options.toJSON;
}
if (options.fromJSON) {
this.fromJSON = options.fromJSON;
}
}
/*write a hidden form and textarea into the page; we'll stow our history stack here*/
var formID = "rshStorageForm";
var textareaID = "rshStorageField";
var formStyles = this.debugMode ? historyStorage.showStyles : historyStorage.hideStyles;
var textareaStyles = (historyStorage.debugMode
? 'width: 800px;height:80px;border:1px solid black;'
: historyStorage.hideStyles
);
var textareaHTML = '';
document.write(textareaHTML);
this.storageField = document.getElementById(textareaID);
if (typeof window.opera !== "undefined") {
this.storageField.focus();/*Opera needs to focus this element before persisting values in it*/
}
},
/*Public*/
put: function(key, value) {
this.assertValidKey(key);
/*if we already have a value for this, remove the value before adding the new one*/
if (this.hasKey(key)) {
this.remove(key);
}
/*store this new key*/
this.storageHash[key] = value;
/*save and serialize the hashtable into the form*/
this.saveHashTable();
},
/*Public*/
get: function(key) {
this.assertValidKey(key);
/*make sure the hash table has been loaded from the form*/
this.loadHashTable();
var value = this.storageHash[key];
if (value === undefined) {
value = null;
}
return value;
},
/*Public*/
remove: function(key) {
this.assertValidKey(key);
/*make sure the hash table has been loaded from the form*/
this.loadHashTable();
/*delete the value*/
delete this.storageHash[key];
/*serialize and save the hash table into the form*/
this.saveHashTable();
},
/*Public: Clears out all saved data.*/
reset: function() {
this.storageField.value = "";
this.storageHash = {};
},
/*Public*/
hasKey: function(key) {
this.assertValidKey(key);
/*make sure the hash table has been loaded from the form*/
this.loadHashTable();
return (typeof this.storageHash[key] !== "undefined");
},
/*Public*/
isValidKey: function(key) {
return (typeof key === "string");
},
/*Public - CSS strings utilized by both objects to hide or show behind-the-scenes DOM elements*/
showStyles: 'border:0;margin:0;padding:0;',
hideStyles: 'left:-1000px;top:-1000px;width:1px;height:1px;border:0;position:absolute;',
/*Public - debug mode flag*/
debugMode: false,
/*- - - - - - - - - - - -*/
/*Private: Our hash of key name/values.*/
storageHash: {},
/*Private: If true, we have loaded our hash table out of the storage form.*/
hashLoaded: false,
/*Private: DOM reference to our history field*/
storageField: null,
/*Private: Assert that a key is valid; throw an exception if it not.*/
assertValidKey: function(key) {
var isValid = this.isValidKey(key);
if (!isValid && this.debugMode) {
throw new Error("Please provide a valid key for window.historyStorage. Invalid key = " + key + ".");
}
},
/*Private: Load the hash table up from the form.*/
loadHashTable: function() {
if (!this.hashLoaded) {
var serializedHashTable = this.storageField.value;
if (serializedHashTable !== "" && serializedHashTable !== null) {
this.storageHash = this.fromJSON(serializedHashTable);
this.hashLoaded = true;
}
}
},
/*Private: Save the hash table into the form.*/
saveHashTable: function() {
this.loadHashTable();
var serializedHashTable = this.toJSON(this.storageHash);
this.storageField.value = serializedHashTable;
},
/*Private: Bridges for our JSON implementations - both rely on 2007 JSON.org library - can be overridden by options bundle*/
toJSON: function(o) {
if(o.toJSONString)
return o.toJSONString();
else if (o.toJSON)
return o.toJSON();
else if (Object.toJSON)
return Object.toJSON(o);
else
throw "No JSON stringify method defined.";
},
fromJSON: function(s) {
if(s.parseJSON)
return s.parseJSON();
else if (s.evalJSON)
return s.evalJSON(true);
else
throw "NO JSON parse method defined.";
}
};
/* Prototype JavaScript framework, version 1.6.0.1
* (c) 2005-2007 Sam Stephenson
*
* Prototype is freely distributable under the terms of an MIT-style license.
* For details, see the Prototype web site: http://www.prototypejs.org/
*
*--------------------------------------------------------------------------*/
var Prototype = {
Version: '1.6.0.1',
Browser: {
IE: !!(window.attachEvent && !window.opera),
Opera: !!window.opera,
WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
},
BrowserFeatures: {
XPath: !!document.evaluate,
ElementExtensions: !!window.HTMLElement,
SpecificElementExtensions:
document.createElement('div').__proto__ &&
document.createElement('div').__proto__ !==
document.createElement('form').__proto__
},
ScriptFragment: ']*>([\\S\\s]*?)<\/script>',
JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
emptyFunction: function() { },
K: function(x) { return x }
};
if (Prototype.Browser.MobileSafari)
Prototype.BrowserFeatures.SpecificElementExtensions = false;
/* Based on Alex Arnell's inheritance implementation. */
var Class = {
create: function() {
var parent = null, properties = $A(arguments);
if (Object.isFunction(properties[0]))
parent = properties.shift();
function klass() {
this.initialize.apply(this, arguments);
}
Object.extend(klass, Class.Methods);
klass.superclass = parent;
klass.subclasses = [];
if (parent) {
var subclass = function() { };
subclass.prototype = parent.prototype;
klass.prototype = new subclass;
parent.subclasses.push(klass);
}
for (var i = 0; i < properties.length; i++)
klass.addMethods(properties[i]);
if (!klass.prototype.initialize)
klass.prototype.initialize = Prototype.emptyFunction;
klass.prototype.constructor = klass;
return klass;
}
};
Class.Methods = {
addMethods: function(source) {
var ancestor = this.superclass && this.superclass.prototype;
var properties = Object.keys(source);
if (!Object.keys({ toString: true }).length)
properties.push("toString", "valueOf");
for (var i = 0, length = properties.length; i < length; i++) {
var property = properties[i], value = source[property];
if (ancestor && Object.isFunction(value) &&
value.argumentNames().first() == "$super") {
var method = value, value = Object.extend((function(m) {
return function() { return ancestor[m].apply(this, arguments) };
})(property).wrap(method), {
valueOf: function() { return method },
toString: function() { return method.toString() }
});
}
this.prototype[property] = value;
}
return this;
}
};
var Abstract = { };
Object.extend = function(destination, source) {
for (var property in source)
destination[property] = source[property];
return destination;
};
Object.extend(Object, {
inspect: function(object) {
try {
if (Object.isUndefined(object)) return 'undefined';
if (object === null) return 'null';
return object.inspect ? object.inspect() : object.toString();
} catch (e) {
if (e instanceof RangeError) return '...';
throw e;
}
},
toJSON: function(object) {
var type = typeof object;
switch (type) {
case 'undefined':
case 'function':
case 'unknown': return;
case 'boolean': return object.toString();
}
if (object === null) return 'null';
if (object.toJSON) return object.toJSON();
if (Object.isElement(object)) return;
var results = [];
for (var property in object) {
var value = Object.toJSON(object[property]);
if (!Object.isUndefined(value))
results.push(property.toJSON() + ': ' + value);
}
return '{' + results.join(', ') + '}';
},
toQueryString: function(object) {
return $H(object).toQueryString();
},
toHTML: function(object) {
return object && object.toHTML ? object.toHTML() : String.interpret(object);
},
keys: function(object) {
var keys = [];
for (var property in object)
keys.push(property);
return keys;
},
values: function(object) {
var values = [];
for (var property in object)
values.push(object[property]);
return values;
},
clone: function(object) {
return Object.extend({ }, object);
},
isElement: function(object) {
return object && object.nodeType == 1;
},
isArray: function(object) {
return object && object.constructor === Array;
},
isHash: function(object) {
return object instanceof Hash;
},
isFunction: function(object) {
return typeof object == "function";
},
isString: function(object) {
return typeof object == "string";
},
isNumber: function(object) {
return typeof object == "number";
},
isUndefined: function(object) {
return typeof object == "undefined";
}
});
Object.extend(Function.prototype, {
argumentNames: function() {
var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
return names.length == 1 && !names[0] ? [] : names;
},
bind: function() {
if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
var __method = this, args = $A(arguments), object = args.shift();
return function() {
return __method.apply(object, args.concat($A(arguments)));
}
},
bindAsEventListener: function() {
var __method = this, args = $A(arguments), object = args.shift();
return function(event) {
return __method.apply(object, [event || window.event].concat(args));
}
},
curry: function() {
if (!arguments.length) return this;
var __method = this, args = $A(arguments);
return function() {
return __method.apply(this, args.concat($A(arguments)));
}
},
delay: function() {
var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
return window.setTimeout(function() {
return __method.apply(__method, args);
}, timeout);
},
wrap: function(wrapper) {
var __method = this;
return function() {
return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
}
},
methodize: function() {
if (this._methodized) return this._methodized;
var __method = this;
return this._methodized = function() {
return __method.apply(null, [this].concat($A(arguments)));
};
}
});
Function.prototype.defer = Function.prototype.delay.curry(0.01);
Date.prototype.toJSON = function() {
return '"' + this.getUTCFullYear() + '-' +
(this.getUTCMonth() + 1).toPaddedString(2) + '-' +
this.getUTCDate().toPaddedString(2) + 'T' +
this.getUTCHours().toPaddedString(2) + ':' +
this.getUTCMinutes().toPaddedString(2) + ':' +
this.getUTCSeconds().toPaddedString(2) + 'Z"';
};
var Try = {
these: function() {
var returnValue;
for (var i = 0, length = arguments.length; i < length; i++) {
var lambda = arguments[i];
try {
returnValue = lambda();
break;
} catch (e) { }
}
return returnValue;
}
};
RegExp.prototype.match = RegExp.prototype.test;
RegExp.escape = function(str) {
return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
/*--------------------------------------------------------------------------*/
var PeriodicalExecuter = Class.create({
initialize: function(callback, frequency) {
this.callback = callback;
this.frequency = frequency;
this.currentlyExecuting = false;
this.registerCallback();
},
registerCallback: function() {
this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
},
execute: function() {
this.callback(this);
},
stop: function() {
if (!this.timer) return;
clearInterval(this.timer);
this.timer = null;
},
onTimerEvent: function() {
if (!this.currentlyExecuting) {
try {
this.currentlyExecuting = true;
this.execute();
} finally {
this.currentlyExecuting = false;
}
}
}
});
Object.extend(String, {
interpret: function(value) {
return value == null ? '' : String(value);
},
specialChar: {
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'\\': '\\\\'
}
});
Object.extend(String.prototype, {
gsub: function(pattern, replacement) {
var result = '', source = this, match;
replacement = arguments.callee.prepareReplacement(replacement);
while (source.length > 0) {
if (match = source.match(pattern)) {
result += source.slice(0, match.index);
result += String.interpret(replacement(match));
source = source.slice(match.index + match[0].length);
} else {
result += source, source = '';
}
}
return result;
},
sub: function(pattern, replacement, count) {
replacement = this.gsub.prepareReplacement(replacement);
count = Object.isUndefined(count) ? 1 : count;
return this.gsub(pattern, function(match) {
if (--count < 0) return match[0];
return replacement(match);
});
},
scan: function(pattern, iterator) {
this.gsub(pattern, iterator);
return String(this);
},
truncate: function(length, truncation) {
length = length || 30;
truncation = Object.isUndefined(truncation) ? '...' : truncation;
return this.length > length ?
this.slice(0, length - truncation.length) + truncation : String(this);
},
strip: function() {
return this.replace(/^\s+/, '').replace(/\s+$/, '');
},
stripTags: function() {
return this.replace(/<\/?[^>]+>/gi, '');
},
stripScripts: function() {
return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
},
extractScripts: function() {
var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
return (this.match(matchAll) || []).map(function(scriptTag) {
return (scriptTag.match(matchOne) || ['', ''])[1];
});
},
evalScripts: function() {
return this.extractScripts().map(function(script) { return eval(script) });
},
escapeHTML: function() {
var self = arguments.callee;
self.text.data = this;
return self.div.innerHTML;
},
unescapeHTML: function() {
var div = new Element('div');
div.innerHTML = this.stripTags();
return div.childNodes[0] ? (div.childNodes.length > 1 ?
$A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
div.childNodes[0].nodeValue) : '';
},
toQueryParams: function(separator) {
var match = this.strip().match(/([^?#]*)(#.*)?$/);
if (!match) return { };
return match[1].split(separator || '&').inject({ }, function(hash, pair) {
if ((pair = pair.split('='))[0]) {
var key = decodeURIComponent(pair.shift());
var value = pair.length > 1 ? pair.join('=') : pair[0];
if (value != undefined) value = decodeURIComponent(value);
if (key in hash) {
if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
hash[key].push(value);
}
else hash[key] = value;
}
return hash;
});
},
toArray: function() {
return this.split('');
},
succ: function() {
return this.slice(0, this.length - 1) +
String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
},
times: function(count) {
return count < 1 ? '' : new Array(count + 1).join(this);
},
camelize: function() {
var parts = this.split('-'), len = parts.length;
if (len == 1) return parts[0];
var camelized = this.charAt(0) == '-'
? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
: parts[0];
for (var i = 1; i < len; i++)
camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
return camelized;
},
capitalize: function() {
return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
},
underscore: function() {
return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
},
dasherize: function() {
return this.gsub(/_/,'-');
},
inspect: function(useDoubleQuotes) {
var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
var character = String.specialChar[match[0]];
return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
});
if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
return "'" + escapedString.replace(/'/g, '\\\'') + "'";
},
toJSON: function() {
return this.inspect(true);
},
unfilterJSON: function(filter) {
return this.sub(filter || Prototype.JSONFilter, '#{1}');
},
isJSON: function() {
var str = this;
if (str.blank()) return false;
str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
},
evalJSON: function(sanitize) {
var json = this.unfilterJSON();
try {
if (!sanitize || json.isJSON()) return eval('(' + json + ')');
} catch (e) { }
throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
},
include: function(pattern) {
return this.indexOf(pattern) > -1;
},
startsWith: function(pattern) {
return this.indexOf(pattern) === 0;
},
endsWith: function(pattern) {
var d = this.length - pattern.length;
return d >= 0 && this.lastIndexOf(pattern) === d;
},
empty: function() {
return this == '';
},
blank: function() {
return /^\s*$/.test(this);
},
interpolate: function(object, pattern) {
return new Template(this, pattern).evaluate(object);
}
});
if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
escapeHTML: function() {
return this.replace(/&/g,'&').replace(//g,'>');
},
unescapeHTML: function() {
return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
}
});
String.prototype.gsub.prepareReplacement = function(replacement) {
if (Object.isFunction(replacement)) return replacement;
var template = new Template(replacement);
return function(match) { return template.evaluate(match) };
};
String.prototype.parseQuery = String.prototype.toQueryParams;
Object.extend(String.prototype.escapeHTML, {
div: document.createElement('div'),
text: document.createTextNode('')
});
with (String.prototype.escapeHTML) div.appendChild(text);
var Template = Class.create({
initialize: function(template, pattern) {
this.template = template.toString();
this.pattern = pattern || Template.Pattern;
},
evaluate: function(object) {
if (Object.isFunction(object.toTemplateReplacements))
object = object.toTemplateReplacements();
return this.template.gsub(this.pattern, function(match) {
if (object == null) return '';
var before = match[1] || '';
if (before == '\\') return match[2];
var ctx = object, expr = match[3];
var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
match = pattern.exec(expr);
if (match == null) return before;
while (match != null) {
var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
ctx = ctx[comp];
if (null == ctx || '' == match[3]) break;
expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
match = pattern.exec(expr);
}
return before + String.interpret(ctx);
}.bind(this));
}
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
var $break = { };
var Enumerable = {
each: function(iterator, context) {
var index = 0;
iterator = iterator.bind(context);
try {
this._each(function(value) {
iterator(value, index++);
});
} catch (e) {
if (e != $break) throw e;
}
return this;
},
eachSlice: function(number, iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var index = -number, slices = [], array = this.toArray();
while ((index += number) < array.length)
slices.push(array.slice(index, index+number));
return slices.collect(iterator, context);
},
all: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var result = true;
this.each(function(value, index) {
result = result && !!iterator(value, index);
if (!result) throw $break;
});
return result;
},
any: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var result = false;
this.each(function(value, index) {
if (result = !!iterator(value, index))
throw $break;
});
return result;
},
collect: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var results = [];
this.each(function(value, index) {
results.push(iterator(value, index));
});
return results;
},
detect: function(iterator, context) {
iterator = iterator.bind(context);
var result;
this.each(function(value, index) {
if (iterator(value, index)) {
result = value;
throw $break;
}
});
return result;
},
findAll: function(iterator, context) {
iterator = iterator.bind(context);
var results = [];
this.each(function(value, index) {
if (iterator(value, index))
results.push(value);
});
return results;
},
grep: function(filter, iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var results = [];
if (Object.isString(filter))
filter = new RegExp(filter);
this.each(function(value, index) {
if (filter.match(value))
results.push(iterator(value, index));
});
return results;
},
include: function(object) {
if (Object.isFunction(this.indexOf))
if (this.indexOf(object) != -1) return true;
var found = false;
this.each(function(value) {
if (value == object) {
found = true;
throw $break;
}
});
return found;
},
inGroupsOf: function(number, fillWith) {
fillWith = Object.isUndefined(fillWith) ? null : fillWith;
return this.eachSlice(number, function(slice) {
while(slice.length < number) slice.push(fillWith);
return slice;
});
},
inject: function(memo, iterator, context) {
iterator = iterator.bind(context);
this.each(function(value, index) {
memo = iterator(memo, value, index);
});
return memo;
},
invoke: function(method) {
var args = $A(arguments).slice(1);
return this.map(function(value) {
return value[method].apply(value, args);
});
},
max: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var result;
this.each(function(value, index) {
value = iterator(value, index);
if (result == null || value >= result)
result = value;
});
return result;
},
min: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var result;
this.each(function(value, index) {
value = iterator(value, index);
if (result == null || value < result)
result = value;
});
return result;
},
partition: function(iterator, context) {
iterator = iterator ? iterator.bind(context) : Prototype.K;
var trues = [], falses = [];
this.each(function(value, index) {
(iterator(value, index) ?
trues : falses).push(value);
});
return [trues, falses];
},
pluck: function(property) {
var results = [];
this.each(function(value) {
results.push(value[property]);
});
return results;
},
reject: function(iterator, context) {
iterator = iterator.bind(context);
var results = [];
this.each(function(value, index) {
if (!iterator(value, index))
results.push(value);
});
return results;
},
sortBy: function(iterator, context) {
iterator = iterator.bind(context);
return this.map(function(value, index) {
return {value: value, criteria: iterator(value, index)};
}).sort(function(left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
}).pluck('value');
},
toArray: function() {
return this.map();
},
zip: function() {
var iterator = Prototype.K, args = $A(arguments);
if (Object.isFunction(args.last()))
iterator = args.pop();
var collections = [this].concat(args).map($A);
return this.map(function(value, index) {
return iterator(collections.pluck(index));
});
},
size: function() {
return this.toArray().length;
},
inspect: function() {
return '#';
}
};
Object.extend(Enumerable, {
map: Enumerable.collect,
find: Enumerable.detect,
select: Enumerable.findAll,
filter: Enumerable.findAll,
member: Enumerable.include,
entries: Enumerable.toArray,
every: Enumerable.all,
some: Enumerable.any
});
function $A(iterable) {
if (!iterable) return [];
if (iterable.toArray) return iterable.toArray();
var length = iterable.length || 0, results = new Array(length);
while (length--) results[length] = iterable[length];
return results;
}
if (Prototype.Browser.WebKit) {
function $A(iterable) {
if (!iterable) return [];
if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
iterable.toArray) return iterable.toArray();
var length = iterable.length || 0, results = new Array(length);
while (length--) results[length] = iterable[length];
return results;
}
}
Array.from = $A;
Object.extend(Array.prototype, Enumerable);
if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
Object.extend(Array.prototype, {
_each: function(iterator) {
for (var i = 0, length = this.length; i < length; i++)
iterator(this[i]);
},
clear: function() {
this.length = 0;
return this;
},
first: function() {
return this[0];
},
last: function() {
return this[this.length - 1];
},
compact: function() {
return this.select(function(value) {
return value != null;
});
},
flatten: function() {
return this.inject([], function(array, value) {
return array.concat(Object.isArray(value) ?
value.flatten() : [value]);
});
},
without: function() {
var values = $A(arguments);
return this.select(function(value) {
return !values.include(value);
});
},
reverse: function(inline) {
return (inline !== false ? this : this.toArray())._reverse();
},
reduce: function() {
return this.length > 1 ? this : this[0];
},
uniq: function(sorted) {
return this.inject([], function(array, value, index) {
if (0 == index || (sorted ? array.last() != value : !array.include(value)))
array.push(value);
return array;
});
},
intersect: function(array) {
return this.uniq().findAll(function(item) {
return array.detect(function(value) { return item === value });
});
},
clone: function() {
return [].concat(this);
},
size: function() {
return this.length;
},
inspect: function() {
return '[' + this.map(Object.inspect).join(', ') + ']';
},
toJSON: function() {
var results = [];
this.each(function(object) {
var value = Object.toJSON(object);
if (!Object.isUndefined(value)) results.push(value);
});
return '[' + results.join(', ') + ']';
}
});
// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
Array.prototype._each = Array.prototype.forEach;
if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
i || (i = 0);
var length = this.length;
if (i < 0) i = length + i;
for (; i < length; i++)
if (this[i] === item) return i;
return -1;
};
if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
var n = this.slice(0, i).reverse().indexOf(item);
return (n < 0) ? n : i - n - 1;
};
Array.prototype.toArray = Array.prototype.clone;
function $w(string) {
if (!Object.isString(string)) return [];
string = string.strip();
return string ? string.split(/\s+/) : [];
}
if (Prototype.Browser.Opera){
Array.prototype.concat = function() {
var array = [];
for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
for (var i = 0, length = arguments.length; i < length; i++) {
if (Object.isArray(arguments[i])) {
for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
array.push(arguments[i][j]);
} else {
array.push(arguments[i]);
}
}
return array;
};
}
Object.extend(Number.prototype, {
toColorPart: function() {
return this.toPaddedString(2, 16);
},
succ: function() {
return this + 1;
},
times: function(iterator) {
$R(0, this, true).each(iterator);
return this;
},
toPaddedString: function(length, radix) {
var string = this.toString(radix || 10);
return '0'.times(length - string.length) + string;
},
toJSON: function() {
return isFinite(this) ? this.toString() : 'null';
}
});
$w('abs round ceil floor').each(function(method){
Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
return new Hash(object);
};
var Hash = Class.create(Enumerable, (function() {
function toQueryPair(key, value) {
if (Object.isUndefined(value)) return key;
return key + '=' + encodeURIComponent(String.interpret(value));
}
return {
initialize: function(object) {
this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
},
_each: function(iterator) {
for (var key in this._object) {
var value = this._object[key], pair = [key, value];
pair.key = key;
pair.value = value;
iterator(pair);
}
},
set: function(key, value) {
return this._object[key] = value;
},
get: function(key) {
return this._object[key];
},
unset: function(key) {
var value = this._object[key];
delete this._object[key];
return value;
},
toObject: function() {
return Object.clone(this._object);
},
keys: function() {
return this.pluck('key');
},
values: function() {
return this.pluck('value');
},
index: function(value) {
var match = this.detect(function(pair) {
return pair.value === value;
});
return match && match.key;
},
merge: function(object) {
return this.clone().update(object);
},
update: function(object) {
return new Hash(object).inject(this, function(result, pair) {
result.set(pair.key, pair.value);
return result;
});
},
toQueryString: function() {
return this.map(function(pair) {
var key = encodeURIComponent(pair.key), values = pair.value;
if (values && typeof values == 'object') {
if (Object.isArray(values))
return values.map(toQueryPair.curry(key)).join('&');
}
return toQueryPair(key, values);
}).join('&');
},
inspect: function() {
return '#';
},
toJSON: function() {
return Object.toJSON(this.toObject());
},
clone: function() {
return new Hash(this);
}
}
})());
Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
initialize: function(start, end, exclusive) {
this.start = start;
this.end = end;
this.exclusive = exclusive;
},
_each: function(iterator) {
var value = this.start;
while (this.include(value)) {
iterator(value);
value = value.succ();
}
},
include: function(value) {
if (value < this.start)
return false;
if (this.exclusive)
return value < this.end;
return value <= this.end;
}
});
var $R = function(start, end, exclusive) {
return new ObjectRange(start, end, exclusive);
};
var Ajax = {
getTransport: function() {
return Try.these(
function() {return new XMLHttpRequest()},
function() {return new ActiveXObject('Msxml2.XMLHTTP')},
function() {return new ActiveXObject('Microsoft.XMLHTTP')}
) || false;
},
activeRequestCount: 0
};
Ajax.Responders = {
responders: [],
_each: function(iterator) {
this.responders._each(iterator);
},
register: function(responder) {
if (!this.include(responder))
this.responders.push(responder);
},
unregister: function(responder) {
this.responders = this.responders.without(responder);
},
dispatch: function(callback, request, transport, json) {
this.each(function(responder) {
if (Object.isFunction(responder[callback])) {
try {
responder[callback].apply(responder, [request, transport, json]);
} catch (e) { }
}
});
}
};
Object.extend(Ajax.Responders, Enumerable);
Ajax.Responders.register({
onCreate: function() { Ajax.activeRequestCount++ },
onComplete: function() { Ajax.activeRequestCount-- }
});
Ajax.Base = Class.create({
initialize: function(options) {
this.options = {
method: 'post',
asynchronous: true,
contentType: 'application/x-www-form-urlencoded',
encoding: 'UTF-8',
parameters: '',
evalJSON: true,
evalJS: true
};
Object.extend(this.options, options || { });
this.options.method = this.options.method.toLowerCase();
if (Object.isString(this.options.parameters))
this.options.parameters = this.options.parameters.toQueryParams();
else if (Object.isHash(this.options.parameters))
this.options.parameters = this.options.parameters.toObject();
}
});
Ajax.Request = Class.create(Ajax.Base, {
_complete: false,
initialize: function($super, url, options) {
$super(options);
this.transport = Ajax.getTransport();
this.request(url);
},
request: function(url) {
this.url = url;
this.method = this.options.method;
var params = Object.clone(this.options.parameters);
if (!['get', 'post'].include(this.method)) {
// simulate other verbs over post
params['_method'] = this.method;
this.method = 'post';
}
this.parameters = params;
if (params = Object.toQueryString(params)) {
// when GET, append parameters to URL
if (this.method == 'get')
this.url += (this.url.include('?') ? '&' : '?') + params;
else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
params += '&_=';
}
try {
var response = new Ajax.Response(this);
if (this.options.onCreate) this.options.onCreate(response);
Ajax.Responders.dispatch('onCreate', this, response);
this.transport.open(this.method.toUpperCase(), this.url,
this.options.asynchronous);
if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
this.transport.onreadystatechange = this.onStateChange.bind(this);
this.setRequestHeaders();
this.body = this.method == 'post' ? (this.options.postBody || params) : null;
this.transport.send(this.body);
/* Force Firefox to handle ready state 4 for synchronous requests */
if (!this.options.asynchronous && this.transport.overrideMimeType)
this.onStateChange();
}
catch (e) {
this.dispatchException(e);
}
},
onStateChange: function() {
var readyState = this.transport.readyState;
if (readyState > 1 && !((readyState == 4) && this._complete))
this.respondToReadyState(this.transport.readyState);
},
setRequestHeaders: function() {
var headers = {
'X-Requested-With': 'XMLHttpRequest',
'X-Prototype-Version': Prototype.Version,
'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
};
if (this.method == 'post') {
headers['Content-type'] = this.options.contentType +
(this.options.encoding ? '; charset=' + this.options.encoding : '');
/* Force "Connection: close" for older Mozilla browsers to work
* around a bug where XMLHttpRequest sends an incorrect
* Content-length header. See Mozilla Bugzilla #246651.
*/
if (this.transport.overrideMimeType &&
(navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
headers['Connection'] = 'close';
}
// user-defined headers
if (typeof this.options.requestHeaders == 'object') {
var extras = this.options.requestHeaders;
if (Object.isFunction(extras.push))
for (var i = 0, length = extras.length; i < length; i += 2)
headers[extras[i]] = extras[i+1];
else
$H(extras).each(function(pair) { headers[pair.key] = pair.value });
}
for (var name in headers)
this.transport.setRequestHeader(name, headers[name]);
},
success: function() {
var status = this.getStatus();
return !status || (status >= 200 && status < 300);
},
getStatus: function() {
try {
return this.transport.status || 0;
} catch (e) { return 0 }
},
respondToReadyState: function(readyState) {
var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
if (state == 'Complete') {
try {
this._complete = true;
(this.options['on' + response.status]
|| this.options['on' + (this.success() ? 'Success' : 'Failure')]
|| Prototype.emptyFunction)(response, response.headerJSON);
} catch (e) {
this.dispatchException(e);
}
var contentType = response.getHeader('Content-type');
if (this.options.evalJS == 'force'
|| (this.options.evalJS && contentType
&& contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
this.evalResponse();
}
try {
(this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
} catch (e) {
this.dispatchException(e);
}
if (state == 'Complete') {
// avoid memory leak in MSIE: clean up
this.transport.onreadystatechange = Prototype.emptyFunction;
}
},
getHeader: function(name) {
try {
return this.transport.getResponseHeader(name) || null;
} catch (e) { return null }
},
evalResponse: function() {
try {
return eval((this.transport.responseText || '').unfilterJSON());
} catch (e) {
this.dispatchException(e);
}
},
dispatchException: function(exception) {
(this.options.onException || Prototype.emptyFunction)(this, exception);
Ajax.Responders.dispatch('onException', this, exception);
}
});
Ajax.Request.Events =
['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Response = Class.create({
initialize: function(request){
this.request = request;
var transport = this.transport = request.transport,
readyState = this.readyState = transport.readyState;
if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
this.status = this.getStatus();
this.statusText = this.getStatusText();
this.responseText = String.interpret(transport.responseText);
this.headerJSON = this._getHeaderJSON();
}
if(readyState == 4) {
var xml = transport.responseXML;
this.responseXML = Object.isUndefined(xml) ? null : xml;
this.responseJSON = this._getResponseJSON();
}
},
status: 0,
statusText: '',
getStatus: Ajax.Request.prototype.getStatus,
getStatusText: function() {
try {
return this.transport.statusText || '';
} catch (e) { return '' }
},
getHeader: Ajax.Request.prototype.getHeader,
getAllHeaders: function() {
try {
return this.getAllResponseHeaders();
} catch (e) { return null }
},
getResponseHeader: function(name) {
return this.transport.getResponseHeader(name);
},
getAllResponseHeaders: function() {
return this.transport.getAllResponseHeaders();
},
_getHeaderJSON: function() {
var json = this.getHeader('X-JSON');
if (!json) return null;
json = decodeURIComponent(escape(json));
try {
return json.evalJSON(this.request.options.sanitizeJSON);
} catch (e) {
this.request.dispatchException(e);
}
},
_getResponseJSON: function() {
var options = this.request.options;
if (!options.evalJSON || (options.evalJSON != 'force' &&
!(this.getHeader('Content-type') || '').include('application/json')) ||
this.responseText.blank())
return null;
try {
return this.responseText.evalJSON(options.sanitizeJSON);
} catch (e) {
this.request.dispatchException(e);
}
}
});
Ajax.Updater = Class.create(Ajax.Request, {
initialize: function($super, container, url, options) {
this.container = {
success: (container.success || container),
failure: (container.failure || (container.success ? null : container))
};
options = Object.clone(options);
var onComplete = options.onComplete;
options.onComplete = (function(response, json) {
this.updateContent(response.responseText);
if (Object.isFunction(onComplete)) onComplete(response, json);
}).bind(this);
$super(url, options);
},
updateContent: function(responseText) {
var receiver = this.container[this.success() ? 'success' : 'failure'],
options = this.options;
if (!options.evalScripts) responseText = responseText.stripScripts();
if (receiver = $(receiver)) {
if (options.insertion) {
if (Object.isString(options.insertion)) {
var insertion = { }; insertion[options.insertion] = responseText;
receiver.insert(insertion);
}
else options.insertion(receiver, responseText);
}
else receiver.update(responseText);
}
}
});
Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
initialize: function($super, container, url, options) {
$super(options);
this.onComplete = this.options.onComplete;
this.frequency = (this.options.frequency || 2);
this.decay = (this.options.decay || 1);
this.updater = { };
this.container = container;
this.url = url;
this.start();
},
start: function() {
this.options.onComplete = this.updateComplete.bind(this);
this.onTimerEvent();
},
stop: function() {
this.updater.options.onComplete = undefined;
clearTimeout(this.timer);
(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
},
updateComplete: function(response) {
if (this.options.decay) {
this.decay = (response.responseText == this.lastText ?
this.decay * this.options.decay : 1);
this.lastText = response.responseText;
}
this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
},
onTimerEvent: function() {
this.updater = new Ajax.Updater(this.container, this.url, this.options);
}
});
function $(element) {
if (arguments.length > 1) {
for (var i = 0, elements = [], length = arguments.length; i < length; i++)
elements.push($(arguments[i]));
return elements;
}
if (Object.isString(element))
element = document.getElementById(element);
return Element.extend(element);
}
if (Prototype.BrowserFeatures.XPath) {
document._getElementsByXPath = function(expression, parentElement) {
var results = [];
var query = document.evaluate(expression, $(parentElement) || document,
null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (var i = 0, length = query.snapshotLength; i < length; i++)
results.push(Element.extend(query.snapshotItem(i)));
return results;
};
}
/*--------------------------------------------------------------------------*/
if (!window.Node) var Node = { };
if (!Node.ELEMENT_NODE) {
// DOM level 2 ECMAScript Language Binding
Object.extend(Node, {
ELEMENT_NODE: 1,
ATTRIBUTE_NODE: 2,
TEXT_NODE: 3,
CDATA_SECTION_NODE: 4,
ENTITY_REFERENCE_NODE: 5,
ENTITY_NODE: 6,
PROCESSING_INSTRUCTION_NODE: 7,
COMMENT_NODE: 8,
DOCUMENT_NODE: 9,
DOCUMENT_TYPE_NODE: 10,
DOCUMENT_FRAGMENT_NODE: 11,
NOTATION_NODE: 12
});
}
(function() {
var element = this.Element;
this.Element = function(tagName, attributes) {
attributes = attributes || { };
tagName = tagName.toLowerCase();
var cache = Element.cache;
if (Prototype.Browser.IE && attributes.name) {
tagName = '<' + tagName + ' name="' + attributes.name + '">';
delete attributes.name;
return Element.writeAttribute(document.createElement(tagName), attributes);
}
if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
};
Object.extend(this.Element, element || { });
}).call(window);
Element.cache = { };
Element.Methods = {
visible: function(element) {
return $(element).style.display != 'none';
},
toggle: function(element) {
element = $(element);
Element[Element.visible(element) ? 'hide' : 'show'](element);
return element;
},
hide: function(element) {
$(element).style.display = 'none';
return element;
},
show: function(element) {
$(element).style.display = '';
return element;
},
remove: function(element) {
element = $(element);
element.parentNode.removeChild(element);
return element;
},
update: function(element, content) {
element = $(element);
if (content && content.toElement) content = content.toElement();
if (Object.isElement(content)) return element.update().insert(content);
content = Object.toHTML(content);
element.innerHTML = content.stripScripts();
content.evalScripts.bind(content).defer();
return element;
},
replace: function(element, content) {
element = $(element);
if (content && content.toElement) content = content.toElement();
else if (!Object.isElement(content)) {
content = Object.toHTML(content);
var range = element.ownerDocument.createRange();
range.selectNode(element);
content.evalScripts.bind(content).defer();
content = range.createContextualFragment(content.stripScripts());
}
element.parentNode.replaceChild(content, element);
return element;
},
insert: function(element, insertions) {
element = $(element);
if (Object.isString(insertions) || Object.isNumber(insertions) ||
Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
insertions = {bottom:insertions};
var content, insert, tagName, childNodes;
for (position in insertions) {
content = insertions[position];
position = position.toLowerCase();
insert = Element._insertionTranslations[position];
if (content && content.toElement) content = content.toElement();
if (Object.isElement(content)) {
insert(element, content);
continue;
}
content = Object.toHTML(content);
tagName = ((position == 'before' || position == 'after')
? element.parentNode : element).tagName.toUpperCase();
childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
if (position == 'top' || position == 'after') childNodes.reverse();
childNodes.each(insert.curry(element));
content.evalScripts.bind(content).defer();
}
return element;
},
wrap: function(element, wrapper, attributes) {
element = $(element);
if (Object.isElement(wrapper))
$(wrapper).writeAttribute(attributes || { });
else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
else wrapper = new Element('div', wrapper);
if (element.parentNode)
element.parentNode.replaceChild(wrapper, element);
wrapper.appendChild(element);
return wrapper;
},
inspect: function(element) {
element = $(element);
var result = '<' + element.tagName.toLowerCase();
$H({'id': 'id', 'className': 'class'}).each(function(pair) {
var property = pair.first(), attribute = pair.last();
var value = (element[property] || '').toString();
if (value) result += ' ' + attribute + '=' + value.inspect(true);
});
return result + '>';
},
recursivelyCollect: function(element, property) {
element = $(element);
var elements = [];
while (element = element[property])
if (element.nodeType == 1)
elements.push(Element.extend(element));
return elements;
},
ancestors: function(element) {
return $(element).recursivelyCollect('parentNode');
},
descendants: function(element) {
return $(element).getElementsBySelector("*");
},
firstDescendant: function(element) {
element = $(element).firstChild;
while (element && element.nodeType != 1) element = element.nextSibling;
return $(element);
},
immediateDescendants: function(element) {
if (!(element = $(element).firstChild)) return [];
while (element && element.nodeType != 1) element = element.nextSibling;
if (element) return [element].concat($(element).nextSiblings());
return [];
},
previousSiblings: function(element) {
return $(element).recursivelyCollect('previousSibling');
},
nextSiblings: function(element) {
return $(element).recursivelyCollect('nextSibling');
},
siblings: function(element) {
element = $(element);
return element.previousSiblings().reverse().concat(element.nextSiblings());
},
match: function(element, selector) {
if (Object.isString(selector))
selector = new Selector(selector);
return selector.match($(element));
},
up: function(element, expression, index) {
element = $(element);
if (arguments.length == 1) return $(element.parentNode);
var ancestors = element.ancestors();
return Object.isNumber(expression) ? ancestors[expression] :
Selector.findElement(ancestors, expression, index);
},
down: function(element, expression, index) {
element = $(element);
if (arguments.length == 1) return element.firstDescendant();
return Object.isNumber(expression) ? element.descendants()[expression] :
element.select(expression)[index || 0];
},
previous: function(element, expression, index) {
element = $(element);
if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
var previousSiblings = element.previousSiblings();
return Object.isNumber(expression) ? previousSiblings[expression] :
Selector.findElement(previousSiblings, expression, index);
},
next: function(element, expression, index) {
element = $(element);
if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
var nextSiblings = element.nextSiblings();
return Object.isNumber(expression) ? nextSiblings[expression] :
Selector.findElement(nextSiblings, expression, index);
},
select: function() {
var args = $A(arguments), element = $(args.shift());
return Selector.findChildElements(element, args);
},
adjacent: function() {
var args = $A(arguments), element = $(args.shift());
return Selector.findChildElements(element.parentNode, args).without(element);
},
identify: function(element) {
element = $(element);
var id = element.readAttribute('id'), self = arguments.callee;
if (id) return id;
do { id = 'anonymous_element_' + self.counter++ } while ($(id));
element.writeAttribute('id', id);
return id;
},
readAttribute: function(element, name) {
element = $(element);
if (Prototype.Browser.IE) {
var t = Element._attributeTranslations.read;
if (t.values[name]) return t.values[name](element, name);
if (t.names[name]) name = t.names[name];
if (name.include(':')) {
return (!element.attributes || !element.attributes[name]) ? null :
element.attributes[name].value;
}
}
return element.getAttribute(name);
},
writeAttribute: function(element, name, value) {
element = $(element);
var attributes = { }, t = Element._attributeTranslations.write;
if (typeof name == 'object') attributes = name;
else attributes[name] = Object.isUndefined(value) ? true : value;
for (var attr in attributes) {
name = t.names[attr] || attr;
value = attributes[attr];
if (t.values[attr]) name = t.values[attr](element, value);
if (value === false || value === null)
element.removeAttribute(name);
else if (value === true)
element.setAttribute(name, name);
else element.setAttribute(name, value);
}
return element;
},
getHeight: function(element) {
return $(element).getDimensions().height;
},
getWidth: function(element) {
return $(element).getDimensions().width;
},
classNames: function(element) {
return new Element.ClassNames(element);
},
hasClassName: function(element, className) {
if (!(element = $(element))) return;
var elementClassName = element.className;
return (elementClassName.length > 0 && (elementClassName == className ||
new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
},
addClassName: function(element, className) {
if (!(element = $(element))) return;
if (!element.hasClassName(className))
element.className += (element.className ? ' ' : '') + className;
return element;
},
removeClassName: function(element, className) {
if (!(element = $(element))) return;
element.className = element.className.replace(
new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
return element;
},
toggleClassName: function(element, className) {
if (!(element = $(element))) return;
return element[element.hasClassName(className) ?
'removeClassName' : 'addClassName'](className);
},
// removes whitespace-only text node children
cleanWhitespace: function(element) {
element = $(element);
var node = element.firstChild;
while (node) {
var nextNode = node.nextSibling;
if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
element.removeChild(node);
node = nextNode;
}
return element;
},
empty: function(element) {
return $(element).innerHTML.blank();
},
descendantOf: function(element, ancestor) {
element = $(element), ancestor = $(ancestor);
var originalAncestor = ancestor;
if (element.compareDocumentPosition)
return (element.compareDocumentPosition(ancestor) & 8) === 8;
if (element.sourceIndex && !Prototype.Browser.Opera) {
var e = element.sourceIndex, a = ancestor.sourceIndex,
nextAncestor = ancestor.nextSibling;
if (!nextAncestor) {
do { ancestor = ancestor.parentNode; }
while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
}
if (nextAncestor) return (e > a && e < nextAncestor.sourceIndex);
}
while (element = element.parentNode)
if (element == originalAncestor) return true;
return false;
},
scrollTo: function(element) {
element = $(element);
var pos = element.cumulativeOffset();
window.scrollTo(pos[0], pos[1]);
return element;
},
getStyle: function(element, style) {
element = $(element);
style = style == 'float' ? 'cssFloat' : style.camelize();
var value = element.style[style];
if (!value) {
var css = document.defaultView.getComputedStyle(element, null);
value = css ? css[style] : null;
}
if (style == 'opacity') return value ? parseFloat(value) : 1.0;
return value == 'auto' ? null : value;
},
getOpacity: function(element) {
return $(element).getStyle('opacity');
},
setStyle: function(element, styles) {
element = $(element);
var elementStyle = element.style, match;
if (Object.isString(styles)) {
element.style.cssText += ';' + styles;
return styles.include('opacity') ?
element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
}
for (var property in styles)
if (property == 'opacity') element.setOpacity(styles[property]);
else
elementStyle[(property == 'float' || property == 'cssFloat') ?
(Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
property] = styles[property];
return element;
},
setOpacity: function(element, value) {
element = $(element);
element.style.opacity = (value == 1 || value === '') ? '' :
(value < 0.00001) ? 0 : value;
return element;
},
getDimensions: function(element) {
element = $(element);
var display = $(element).getStyle('display');
if (display != 'none' && display != null) // Safari bug
return {width: element.offsetWidth, height: element.offsetHeight};
// All *Width and *Height properties give 0 on elements with display none,
// so enable the element temporarily
var els = element.style;
var originalVisibility = els.visibility;
var originalPosition = els.position;
var originalDisplay = els.display;
els.visibility = 'hidden';
els.position = 'absolute';
els.display = 'block';
var originalWidth = element.clientWidth;
var originalHeight = element.clientHeight;
els.display = originalDisplay;
els.position = originalPosition;
els.visibility = originalVisibility;
return {width: originalWidth, height: originalHeight};
},
makePositioned: function(element) {
element = $(element);
var pos = Element.getStyle(element, 'position');
if (pos == 'static' || !pos) {
element._madePositioned = true;
element.style.position = 'relative';
// Opera returns the offset relative to the positioning context, when an
// element is position relative but top and left have not been defined
if (window.opera) {
element.style.top = 0;
element.style.left = 0;
}
}
return element;
},
undoPositioned: function(element) {
element = $(element);
if (element._madePositioned) {
element._madePositioned = undefined;
element.style.position =
element.style.top =
element.style.left =
element.style.bottom =
element.style.right = '';
}
return element;
},
makeClipping: function(element) {
element = $(element);
if (element._overflow) return element;
element._overflow = Element.getStyle(element, 'overflow') || 'auto';
if (element._overflow !== 'hidden')
element.style.overflow = 'hidden';
return element;
},
undoClipping: function(element) {
element = $(element);
if (!element._overflow) return element;
element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
element._overflow = null;
return element;
},
cumulativeOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
element = element.offsetParent;
} while (element);
return Element._returnOffset(valueL, valueT);
},
positionedOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
element = element.offsetParent;
if (element) {
if (element.tagName == 'BODY') break;
var p = Element.getStyle(element, 'position');
if (p == 'relative' || p == 'absolute') break;
}
} while (element);
return Element._returnOffset(valueL, valueT);
},
absolutize: function(element) {
element = $(element);
if (element.getStyle('position') == 'absolute') return;
// Position.prepare(); // To be done manually by Scripty when it needs it.
var offsets = element.positionedOffset();
var top = offsets[1];
var left = offsets[0];
var width = element.clientWidth;
var height = element.clientHeight;
element._originalLeft = left - parseFloat(element.style.left || 0);
element._originalTop = top - parseFloat(element.style.top || 0);
element._originalWidth = element.style.width;
element._originalHeight = element.style.height;
element.style.position = 'absolute';
element.style.top = top + 'px';
element.style.left = left + 'px';
element.style.width = width + 'px';
element.style.height = height + 'px';
return element;
},
relativize: function(element) {
element = $(element);
if (element.getStyle('position') == 'relative') return;
// Position.prepare(); // To be done manually by Scripty when it needs it.
element.style.position = 'relative';
var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
element.style.top = top + 'px';
element.style.left = left + 'px';
element.style.height = element._originalHeight;
element.style.width = element._originalWidth;
return element;
},
cumulativeScrollOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.scrollTop || 0;
valueL += element.scrollLeft || 0;
element = element.parentNode;
} while (element);
return Element._returnOffset(valueL, valueT);
},
getOffsetParent: function(element) {
if (element.offsetParent) return $(element.offsetParent);
if (element == document.body) return $(element);
while ((element = element.parentNode) && element != document.body)
if (Element.getStyle(element, 'position') != 'static')
return $(element);
return $(document.body);
},
viewportOffset: function(forElement) {
var valueT = 0, valueL = 0;
var element = forElement;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
// Safari fix
if (element.offsetParent == document.body &&
Element.getStyle(element, 'position') == 'absolute') break;
} while (element = element.offsetParent);
element = forElement;
do {
if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
valueT -= element.scrollTop || 0;
valueL -= element.scrollLeft || 0;
}
} while (element = element.parentNode);
return Element._returnOffset(valueL, valueT);
},
clonePosition: function(element, source) {
var options = Object.extend({
setLeft: true,
setTop: true,
setWidth: true,
setHeight: true,
offsetTop: 0,
offsetLeft: 0
}, arguments[2] || { });
// find page position of source
source = $(source);
var p = source.viewportOffset();
// find coordinate system to use
element = $(element);
var delta = [0, 0];
var parent = null;
// delta [0,0] will do fine with position: fixed elements,
// position:absolute needs offsetParent deltas
if (Element.getStyle(element, 'position') == 'absolute') {
parent = element.getOffsetParent();
delta = parent.viewportOffset();
}
// correct by body offsets (fixes Safari)
if (parent == document.body) {
delta[0] -= document.body.offsetLeft;
delta[1] -= document.body.offsetTop;
}
// set position
if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
if (options.setWidth) element.style.width = source.offsetWidth + 'px';
if (options.setHeight) element.style.height = source.offsetHeight + 'px';
return element;
}
};
Element.Methods.identify.counter = 1;
Object.extend(Element.Methods, {
getElementsBySelector: Element.Methods.select,
childElements: Element.Methods.immediateDescendants
});
Element._attributeTranslations = {
write: {
names: {
className: 'class',
htmlFor: 'for'
},
values: { }
}
};
if (Prototype.Browser.Opera) {
Element.Methods.getStyle = Element.Methods.getStyle.wrap(
function(proceed, element, style) {
switch (style) {
case 'left': case 'top': case 'right': case 'bottom':
if (proceed(element, 'position') === 'static') return null;
case 'height': case 'width':
// returns '0px' for hidden elements; we want it to return null
if (!Element.visible(element)) return null;
// returns the border-box dimensions rather than the content-box
// dimensions, so we subtract padding and borders from the value
var dim = parseInt(proceed(element, style), 10);
if (dim !== element['offset' + style.capitalize()])
return dim + 'px';
var properties;
if (style === 'height') {
properties = ['border-top-width', 'padding-top',
'padding-bottom', 'border-bottom-width'];
}
else {
properties = ['border-left-width', 'padding-left',
'padding-right', 'border-right-width'];
}
return properties.inject(dim, function(memo, property) {
var val = proceed(element, property);
return val === null ? memo : memo - parseInt(val, 10);
}) + 'px';
default: return proceed(element, style);
}
}
);
Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
function(proceed, element, attribute) {
if (attribute === 'title') return element.title;
return proceed(element, attribute);
}
);
}
else if (Prototype.Browser.IE) {
$w('positionedOffset getOffsetParent viewportOffset').each(function(method) {
Element.Methods[method] = Element.Methods[method].wrap(
function(proceed, element) {
element = $(element);
var position = element.getStyle('position');
if (position != 'static') return proceed(element);
element.setStyle({ position: 'relative' });
var value = proceed(element);
element.setStyle({ position: position });
return value;
}
);
});
Element.Methods.getStyle = function(element, style) {
element = $(element);
style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
var value = element.style[style];
if (!value && element.currentStyle) value = element.currentStyle[style];
if (style == 'opacity') {
if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
if (value[1]) return parseFloat(value[1]) / 100;
return 1.0;
}
if (value == 'auto') {
if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
return element['offset' + style.capitalize()] + 'px';
return null;
}
return value;
};
Element.Methods.setOpacity = function(element, value) {
function stripAlpha(filter){
return filter.replace(/alpha\([^\)]*\)/gi,'');
}
element = $(element);
var currentStyle = element.currentStyle;
if ((currentStyle && !currentStyle.hasLayout) ||
(!currentStyle && element.style.zoom == 'normal'))
element.style.zoom = 1;
var filter = element.getStyle('filter'), style = element.style;
if (value == 1 || value === '') {
(filter = stripAlpha(filter)) ?
style.filter = filter : style.removeAttribute('filter');
return element;
} else if (value < 0.00001) value = 0;
style.filter = stripAlpha(filter) +
'alpha(opacity=' + (value * 100) + ')';
return element;
};
Element._attributeTranslations = {
read: {
names: {
'class': 'className',
'for': 'htmlFor'
},
values: {
_getAttr: function(element, attribute) {
return element.getAttribute(attribute, 2);
},
_getAttrNode: function(element, attribute) {
var node = element.getAttributeNode(attribute);
return node ? node.value : "";
},
_getEv: function(element, attribute) {
attribute = element.getAttribute(attribute);
return attribute ? attribute.toString().slice(23, -2) : null;
},
_flag: function(element, attribute) {
return $(element).hasAttribute(attribute) ? attribute : null;
},
style: function(element) {
return element.style.cssText.toLowerCase();
},
title: function(element) {
return element.title;
}
}
}
};
Element._attributeTranslations.write = {
names: Object.clone(Element._attributeTranslations.read.names),
values: {
checked: function(element, value) {
element.checked = !!value;
},
style: function(element, value) {
element.style.cssText = value ? value : '';
}
}
};
Element._attributeTranslations.has = {};
$w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
'encType maxLength readOnly longDesc').each(function(attr) {
Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
Element._attributeTranslations.has[attr.toLowerCase()] = attr;
});
(function(v) {
Object.extend(v, {
href: v._getAttr,
src: v._getAttr,
type: v._getAttr,
action: v._getAttrNode,
disabled: v._flag,
checked: v._flag,
readonly: v._flag,
multiple: v._flag,
onload: v._getEv,
onunload: v._getEv,
onclick: v._getEv,
ondblclick: v._getEv,
onmousedown: v._getEv,
onmouseup: v._getEv,
onmouseover: v._getEv,
onmousemove: v._getEv,
onmouseout: v._getEv,
onfocus: v._getEv,
onblur: v._getEv,
onkeypress: v._getEv,
onkeydown: v._getEv,
onkeyup: v._getEv,
onsubmit: v._getEv,
onreset: v._getEv,
onselect: v._getEv,
onchange: v._getEv
});
})(Element._attributeTranslations.read.values);
}
else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
Element.Methods.setOpacity = function(element, value) {
element = $(element);
element.style.opacity = (value == 1) ? 0.999999 :
(value === '') ? '' : (value < 0.00001) ? 0 : value;
return element;
};
}
else if (Prototype.Browser.WebKit) {
Element.Methods.setOpacity = function(element, value) {
element = $(element);
element.style.opacity = (value == 1 || value === '') ? '' :
(value < 0.00001) ? 0 : value;
if (value == 1)
if(element.tagName == 'IMG' && element.width) {
element.width++; element.width--;
} else try {
var n = document.createTextNode(' ');
element.appendChild(n);
element.removeChild(n);
} catch (e) { }
return element;
};
// Safari returns margins on body which is incorrect if the child is absolutely
// positioned. For performance reasons, redefine Element#cumulativeOffset for
// KHTML/WebKit only.
Element.Methods.cumulativeOffset = function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
if (element.offsetParent == document.body)
if (Element.getStyle(element, 'position') == 'absolute') break;
element = element.offsetParent;
} while (element);
return Element._returnOffset(valueL, valueT);
};
}
if (Prototype.Browser.IE || Prototype.Browser.Opera) {
// IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
Element.Methods.update = function(element, content) {
element = $(element);
if (content && content.toElement) content = content.toElement();
if (Object.isElement(content)) return element.update().insert(content);
content = Object.toHTML(content);
var tagName = element.tagName.toUpperCase();
if (tagName in Element._insertionTranslations.tags) {
$A(element.childNodes).each(function(node) { element.removeChild(node) });
Element._getContentFromAnonymousElement(tagName, content.stripScripts())
.each(function(node) { element.appendChild(node) });
}
else element.innerHTML = content.stripScripts();
content.evalScripts.bind(content).defer();
return element;
};
}
if (document.createElement('div').outerHTML) {
Element.Methods.replace = function(element, content) {
element = $(element);
if (content && content.toElement) content = content.toElement();
if (Object.isElement(content)) {
element.parentNode.replaceChild(content, element);
return element;
}
content = Object.toHTML(content);
var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
if (Element._insertionTranslations.tags[tagName]) {
var nextSibling = element.next();
var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
parent.removeChild(element);
if (nextSibling)
fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
else
fragments.each(function(node) { parent.appendChild(node) });
}
else element.outerHTML = content.stripScripts();
content.evalScripts.bind(content).defer();
return element;
};
}
Element._returnOffset = function(l, t) {
var result = [l, t];
result.left = l;
result.top = t;
return result;
};
Element._getContentFromAnonymousElement = function(tagName, html) {
var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
if (t) {
div.innerHTML = t[0] + html + t[1];
t[2].times(function() { div = div.firstChild });
} else div.innerHTML = html;
return $A(div.childNodes);
};
Element._insertionTranslations = {
before: function(element, node) {
element.parentNode.insertBefore(node, element);
},
top: function(element, node) {
element.insertBefore(node, element.firstChild);
},
bottom: function(element, node) {
element.appendChild(node);
},
after: function(element, node) {
element.parentNode.insertBefore(node, element.nextSibling);
},
tags: {
TABLE: ['', 1],
TBODY: ['', 2],
TR: ['', 3],
TD: ['', 4],
SELECT: ['', 1]
}
};
(function() {
Object.extend(this.tags, {
THEAD: this.tags.TBODY,
TFOOT: this.tags.TBODY,
TH: this.tags.TD
});
}).call(Element._insertionTranslations);
Element.Methods.Simulated = {
hasAttribute: function(element, attribute) {
attribute = Element._attributeTranslations.has[attribute] || attribute;
var node = $(element).getAttributeNode(attribute);
return node && node.specified;
}
};
Element.Methods.ByTag = { };
Object.extend(Element, Element.Methods);
if (!Prototype.BrowserFeatures.ElementExtensions &&
document.createElement('div').__proto__) {
window.HTMLElement = { };
window.HTMLElement.prototype = document.createElement('div').__proto__;
Prototype.BrowserFeatures.ElementExtensions = true;
}
Element.extend = (function() {
if (Prototype.BrowserFeatures.SpecificElementExtensions)
return Prototype.K;
var Methods = { }, ByTag = Element.Methods.ByTag;
var extend = Object.extend(function(element) {
if (!element || element._extendedByPrototype ||
element.nodeType != 1 || element == window) return element;
var methods = Object.clone(Methods),
tagName = element.tagName, property, value;
// extend methods for specific tags
if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
for (property in methods) {
value = methods[property];
if (Object.isFunction(value) && !(property in element))
element[property] = value.methodize();
}
element._extendedByPrototype = Prototype.emptyFunction;
return element;
}, {
refresh: function() {
// extend methods for all tags (Safari doesn't need this)
if (!Prototype.BrowserFeatures.ElementExtensions) {
Object.extend(Methods, Element.Methods);
Object.extend(Methods, Element.Methods.Simulated);
}
}
});
extend.refresh();
return extend;
})();
Element.hasAttribute = function(element, attribute) {
if (element.hasAttribute) return element.hasAttribute(attribute);
return Element.Methods.Simulated.hasAttribute(element, attribute);
};
Element.addMethods = function(methods) {
var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
if (!methods) {
Object.extend(Form, Form.Methods);
Object.extend(Form.Element, Form.Element.Methods);
Object.extend(Element.Methods.ByTag, {
"FORM": Object.clone(Form.Methods),
"INPUT": Object.clone(Form.Element.Methods),
"SELECT": Object.clone(Form.Element.Methods),
"TEXTAREA": Object.clone(Form.Element.Methods)
});
}
if (arguments.length == 2) {
var tagName = methods;
methods = arguments[1];
}
if (!tagName) Object.extend(Element.Methods, methods || { });
else {
if (Object.isArray(tagName)) tagName.each(extend);
else extend(tagName);
}
function extend(tagName) {
tagName = tagName.toUpperCase();
if (!Element.Methods.ByTag[tagName])
Element.Methods.ByTag[tagName] = { };
Object.extend(Element.Methods.ByTag[tagName], methods);
}
function copy(methods, destination, onlyIfAbsent) {
onlyIfAbsent = onlyIfAbsent || false;
for (var property in methods) {
var value = methods[property];
if (!Object.isFunction(value)) continue;
if (!onlyIfAbsent || !(property in destination))
destination[property] = value.methodize();
}
}
function findDOMClass(tagName) {
var klass;
var trans = {
"OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
"FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
"DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
"H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
"INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
"TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
"TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
"TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
"FrameSet", "IFRAME": "IFrame"
};
if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
if (window[klass]) return window[klass];
klass = 'HTML' + tagName + 'Element';
if (window[klass]) return window[klass];
klass = 'HTML' + tagName.capitalize() + 'Element';
if (window[klass]) return window[klass];
window[klass] = { };
window[klass].prototype = document.createElement(tagName).__proto__;
return window[klass];
}
if (F.ElementExtensions) {
copy(Element.Methods, HTMLElement.prototype);
copy(Element.Methods.Simulated, HTMLElement.prototype, true);
}
if (F.SpecificElementExtensions) {
for (var tag in Element.Methods.ByTag) {
var klass = findDOMClass(tag);
if (Object.isUndefined(klass)) continue;
copy(T[tag], klass.prototype);
}
}
Object.extend(Element, Element.Methods);
delete Element.ByTag;
if (Element.extend.refresh) Element.extend.refresh();
Element.cache = { };
};
document.viewport = {
getDimensions: function() {
var dimensions = { };
var B = Prototype.Browser;
$w('width height').each(function(d) {
var D = d.capitalize();
dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
(B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
});
return dimensions;
},
getWidth: function() {
return this.getDimensions().width;
},
getHeight: function() {
return this.getDimensions().height;
},
getScrollOffsets: function() {
return Element._returnOffset(
window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
}
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
* part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
* license. Please see http://www.yui-ext.com/ for more information. */
var Selector = Class.create({
initialize: function(expression) {
this.expression = expression.strip();
this.compileMatcher();
},
shouldUseXPath: function() {
if (!Prototype.BrowserFeatures.XPath) return false;
var e = this.expression;
// Safari 3 chokes on :*-of-type and :empty
if (Prototype.Browser.WebKit &&
(e.include("-of-type") || e.include(":empty")))
return false;
// XPath can't do namespaced attributes, nor can it read
// the "checked" property from DOM nodes
if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
return false;
return true;
},
compileMatcher: function() {
if (this.shouldUseXPath())
return this.compileXPathMatcher();
var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
c = Selector.criteria, le, p, m;
if (Selector._cache[e]) {
this.matcher = Selector._cache[e];
return;
}
this.matcher = ["this.matcher = function(root) {",
"var r = root, h = Selector.handlers, c = false, n;"];
while (e && le != e && (/\S/).test(e)) {
le = e;
for (var i in ps) {
p = ps[i];
if (m = e.match(p)) {
this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
new Template(c[i]).evaluate(m));
e = e.replace(m[0], '');
break;
}
}
}
this.matcher.push("return h.unique(n);\n}");
eval(this.matcher.join('\n'));
Selector._cache[this.expression] = this.matcher;
},
compileXPathMatcher: function() {
var e = this.expression, ps = Selector.patterns,
x = Selector.xpath, le, m;
if (Selector._cache[e]) {
this.xpath = Selector._cache[e]; return;
}
this.matcher = ['.//*'];
while (e && le != e && (/\S/).test(e)) {
le = e;
for (var i in ps) {
if (m = e.match(ps[i])) {
this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
new Template(x[i]).evaluate(m));
e = e.replace(m[0], '');
break;
}
}
}
this.xpath = this.matcher.join('');
Selector._cache[this.expression] = this.xpath;
},
findElements: function(root) {
root = root || document;
if (this.xpath) return document._getElementsByXPath(this.xpath, root);
return this.matcher(root);
},
match: function(element) {
this.tokens = [];
var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
var le, p, m;
while (e && le !== e && (/\S/).test(e)) {
le = e;
for (var i in ps) {
p = ps[i];
if (m = e.match(p)) {
// use the Selector.assertions methods unless the selector
// is too complex.
if (as[i]) {
this.tokens.push([i, Object.clone(m)]);
e = e.replace(m[0], '');
} else {
// reluctantly do a document-wide search
// and look for a match in the array
return this.findElements(document).include(element);
}
}
}
}
var match = true, name, matches;
for (var i = 0, token; token = this.tokens[i]; i++) {
name = token[0], matches = token[1];
if (!Selector.assertions[name](element, matches)) {
match = false; break;
}
}
return match;
},
toString: function() {
return this.expression;
},
inspect: function() {
return "#";
}
});
Object.extend(Selector, {
_cache: { },
xpath: {
descendant: "//*",
child: "/*",
adjacent: "/following-sibling::*[1]",
laterSibling: '/following-sibling::*',
tagName: function(m) {
if (m[1] == '*') return '';
return "[local-name()='" + m[1].toLowerCase() +
"' or local-name()='" + m[1].toUpperCase() + "']";
},
className: "[contains(concat(' ', @class, ' '), ' #{1} ')]",
id: "[@id='#{1}']",
attrPresence: function(m) {
m[1] = m[1].toLowerCase();
return new Template("[@#{1}]").evaluate(m);
},
attr: function(m) {
m[1] = m[1].toLowerCase();
m[3] = m[5] || m[6];
return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
},
pseudo: function(m) {
var h = Selector.xpath.pseudos[m[1]];
if (!h) return '';
if (Object.isFunction(h)) return h(m);
return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
},
operators: {
'=': "[@#{1}='#{3}']",
'!=': "[@#{1}!='#{3}']",
'^=': "[starts-with(@#{1}, '#{3}')]",
'$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
'*=': "[contains(@#{1}, '#{3}')]",
'~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
'|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
},
pseudos: {
'first-child': '[not(preceding-sibling::*)]',
'last-child': '[not(following-sibling::*)]',
'only-child': '[not(preceding-sibling::* or following-sibling::*)]',
'empty': "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
'checked': "[@checked]",
'disabled': "[@disabled]",
'enabled': "[not(@disabled)]",
'not': function(m) {
var e = m[6], p = Selector.patterns,
x = Selector.xpath, le, v;
var exclusion = [];
while (e && le != e && (/\S/).test(e)) {
le = e;
for (var i in p) {
if (m = e.match(p[i])) {
v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
exclusion.push("(" + v.substring(1, v.length - 1) + ")");
e = e.replace(m[0], '');
break;
}
}
}
return "[not(" + exclusion.join(" and ") + ")]";
},
'nth-child': function(m) {
return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
},
'nth-last-child': function(m) {
return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
},
'nth-of-type': function(m) {
return Selector.xpath.pseudos.nth("position() ", m);
},
'nth-last-of-type': function(m) {
return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
},
'first-of-type': function(m) {
m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
},
'last-of-type': function(m) {
m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
},
'only-of-type': function(m) {
var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
},
nth: function(fragment, m) {
var mm, formula = m[6], predicate;
if (formula == 'even') formula = '2n+0';
if (formula == 'odd') formula = '2n+1';
if (mm = formula.match(/^(\d+)$/)) // digit only
return '[' + fragment + "= " + mm[1] + ']';
if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
if (mm[1] == "-") mm[1] = -1;
var a = mm[1] ? Number(mm[1]) : 1;
var b = mm[2] ? Number(mm[2]) : 0;
predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
"((#{fragment} - #{b}) div #{a} >= 0)]";
return new Template(predicate).evaluate({
fragment: fragment, a: a, b: b });
}
}
}
},
criteria: {
tagName: 'n = h.tagName(n, r, "#{1}", c); c = false;',
className: 'n = h.className(n, r, "#{1}", c); c = false;',
id: 'n = h.id(n, r, "#{1}", c); c = false;',
attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;',
attr: function(m) {
m[3] = (m[5] || m[6]);
return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m);
},
pseudo: function(m) {
if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
},
descendant: 'c = "descendant";',
child: 'c = "child";',
adjacent: 'c = "adjacent";',
laterSibling: 'c = "laterSibling";'
},
patterns: {
// combinators must be listed first
// (and descendant needs to be last combinator)
laterSibling: /^\s*~\s*/,
child: /^\s*>\s*/,
adjacent: /^\s*\+\s*/,
descendant: /^\s/,
// selectors follow
tagName: /^\s*(\*|[\w\-]+)(\b|$)?/,
id: /^#([\w\-\*]+)(\b|$)/,
className: /^\.([\w\-\*]+)(\b|$)/,
pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
attrPresence: /^\[([\w]+)\]/,
attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
},
// for Selector.match and Element#match
assertions: {
tagName: function(element, matches) {
return matches[1].toUpperCase() == element.tagName.toUpperCase();
},
className: function(element, matches) {
return Element.hasClassName(element, matches[1]);
},
id: function(element, matches) {
return element.id === matches[1];
},
attrPresence: function(element, matches) {
return Element.hasAttribute(element, matches[1]);
},
attr: function(element, matches) {
var nodeValue = Element.readAttribute(element, matches[1]);
return Selector.operators[matches[2]](nodeValue, matches[3]);
}
},
handlers: {
// UTILITY FUNCTIONS
// joins two collections
concat: function(a, b) {
for (var i = 0, node; node = b[i]; i++)
a.push(node);
return a;
},
// marks an array of nodes for counting
mark: function(nodes) {
for (var i = 0, node; node = nodes[i]; i++)
node._counted = true;
return nodes;
},
unmark: function(nodes) {
for (var i = 0, node; node = nodes[i]; i++)
node._counted = undefined;
return nodes;
},
// mark each child node with its position (for nth calls)
// "ofType" flag indicates whether we're indexing for nth-of-type
// rather than nth-child
index: function(parentNode, reverse, ofType) {
parentNode._counted = true;
if (reverse) {
for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
var node = nodes[i];
if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
}
} else {
for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
}
},
// filters out duplicates and extends all nodes
unique: function(nodes) {
if (nodes.length == 0) return nodes;
var results = [], n;
for (var i = 0, l = nodes.length; i < l; i++)
if (!(n = nodes[i])._counted) {
n._counted = true;
results.push(Element.extend(n));
}
return Selector.handlers.unmark(results);
},
// COMBINATOR FUNCTIONS
descendant: function(nodes) {
var h = Selector.handlers;
for (var i = 0, results = [], node; node = nodes[i]; i++)
h.concat(results, node.getElementsByTagName('*'));
return results;
},
child: function(nodes) {
var h = Selector.handlers;
for (var i = 0, results = [], node; node = nodes[i]; i++) {
for (var j = 0, child; child = node.childNodes[j]; j++)
if (child.nodeType == 1 && child.tagName != '!') results.push(child);
}
return results;
},
adjacent: function(nodes) {
for (var i = 0, results = [], node; node = nodes[i]; i++) {
var next = this.nextElementSibling(node);
if (next) results.push(next);
}
return results;
},
laterSibling: function(nodes) {
var h = Selector.handlers;
for (var i = 0, results = [], node; node = nodes[i]; i++)
h.concat(results, Element.nextSiblings(node));
return results;
},
nextElementSibling: function(node) {
while (node = node.nextSibling)
if (node.nodeType == 1) return node;
return null;
},
previousElementSibling: function(node) {
while (node = node.previousSibling)
if (node.nodeType == 1) return node;
return null;
},
// TOKEN FUNCTIONS
tagName: function(nodes, root, tagName, combinator) {
var uTagName = tagName.toUpperCase();
var results = [], h = Selector.handlers;
if (nodes) {
if (combinator) {
// fastlane for ordinary descendant combinators
if (combinator == "descendant") {
for (var i = 0, node; node = nodes[i]; i++)
h.concat(results, node.getElementsByTagName(tagName));
return results;
} else nodes = this[combinator](nodes);
if (tagName == "*") return nodes;
}
for (var i = 0, node; node = nodes[i]; i++)
if (node.tagName.toUpperCase() === uTagName) results.push(node);
return results;
} else return root.getElementsByTagName(tagName);
},
id: function(nodes, root, id, combinator) {
var targetNode = $(id), h = Selector.handlers;
if (!targetNode) return [];
if (!nodes && root == document) return [targetNode];
if (nodes) {
if (combinator) {
if (combinator == 'child') {
for (var i = 0, node; node = nodes[i]; i++)
if (targetNode.parentNode == node) return [targetNode];
} else if (combinator == 'descendant') {
for (var i = 0, node; node = nodes[i]; i++)
if (Element.descendantOf(targetNode, node)) return [targetNode];
} else if (combinator == 'adjacent') {
for (var i = 0, node; node = nodes[i]; i++)
if (Selector.handlers.previousElementSibling(targetNode) == node)
return [targetNode];
} else nodes = h[combinator](nodes);
}
for (var i = 0, node; node = nodes[i]; i++)
if (node == targetNode) return [targetNode];
return [];
}
return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
},
className: function(nodes, root, className, combinator) {
if (nodes && combinator) nodes = this[combinator](nodes);
return Selector.handlers.byClassName(nodes, root, className);
},
byClassName: function(nodes, root, className) {
if (!nodes) nodes = Selector.handlers.descendant([root]);
var needle = ' ' + className + ' ';
for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
nodeClassName = node.className;
if (nodeClassName.length == 0) continue;
if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
results.push(node);
}
return results;
},
attrPresence: function(nodes, root, attr) {
if (!nodes) nodes = root.getElementsByTagName("*");
var results = [];
for (var i = 0, node; node = nodes[i]; i++)
if (Element.hasAttribute(node, attr)) results.push(node);
return results;
},
attr: function(nodes, root, attr, value, operator) {
if (!nodes) nodes = root.getElementsByTagName("*");
var handler = Selector.operators[operator], results = [];
for (var i = 0, node; node = nodes[i]; i++) {
var nodeValue = Element.readAttribute(node, attr);
if (nodeValue === null) continue;
if (handler(nodeValue, value)) results.push(node);
}
return results;
},
pseudo: function(nodes, name, value, root, combinator) {
if (nodes && combinator) nodes = this[combinator](nodes);
if (!nodes) nodes = root.getElementsByTagName("*");
return Selector.pseudos[name](nodes, value, root);
}
},
pseudos: {
'first-child': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++) {
if (Selector.handlers.previousElementSibling(node)) continue;
results.push(node);
}
return results;
},
'last-child': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++) {
if (Selector.handlers.nextElementSibling(node)) continue;
results.push(node);
}
return results;
},
'only-child': function(nodes, value, root) {
var h = Selector.handlers;
for (var i = 0, results = [], node; node = nodes[i]; i++)
if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
results.push(node);
return results;
},
'nth-child': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, formula, root);
},
'nth-last-child': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, formula, root, true);
},
'nth-of-type': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, formula, root, false, true);
},
'nth-last-of-type': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, formula, root, true, true);
},
'first-of-type': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, "1", root, false, true);
},
'last-of-type': function(nodes, formula, root) {
return Selector.pseudos.nth(nodes, "1", root, true, true);
},
'only-of-type': function(nodes, formula, root) {
var p = Selector.pseudos;
return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
},
// handles the an+b logic
getIndices: function(a, b, total) {
if (a == 0) return b > 0 ? [b] : [];
return $R(1, total).inject([], function(memo, i) {
if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
return memo;
});
},
// handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
nth: function(nodes, formula, root, reverse, ofType) {
if (nodes.length == 0) return [];
if (formula == 'even') formula = '2n+0';
if (formula == 'odd') formula = '2n+1';
var h = Selector.handlers, results = [], indexed = [], m;
h.mark(nodes);
for (var i = 0, node; node = nodes[i]; i++) {
if (!node.parentNode._counted) {
h.index(node.parentNode, reverse, ofType);
indexed.push(node.parentNode);
}
}
if (formula.match(/^\d+$/)) { // just a number
formula = Number(formula);
for (var i = 0, node; node = nodes[i]; i++)
if (node.nodeIndex == formula) results.push(node);
} else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
if (m[1] == "-") m[1] = -1;
var a = m[1] ? Number(m[1]) : 1;
var b = m[2] ? Number(m[2]) : 0;
var indices = Selector.pseudos.getIndices(a, b, nodes.length);
for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
for (var j = 0; j < l; j++)
if (node.nodeIndex == indices[j]) results.push(node);
}
}
h.unmark(nodes);
h.unmark(indexed);
return results;
},
'empty': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++) {
// IE treats comments as element nodes
if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
results.push(node);
}
return results;
},
'not': function(nodes, selector, root) {
var h = Selector.handlers, selectorType, m;
var exclusions = new Selector(selector).findElements(root);
h.mark(exclusions);
for (var i = 0, results = [], node; node = nodes[i]; i++)
if (!node._counted) results.push(node);
h.unmark(exclusions);
return results;
},
'enabled': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++)
if (!node.disabled) results.push(node);
return results;
},
'disabled': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++)
if (node.disabled) results.push(node);
return results;
},
'checked': function(nodes, value, root) {
for (var i = 0, results = [], node; node = nodes[i]; i++)
if (node.checked) results.push(node);
return results;
}
},
operators: {
'=': function(nv, v) { return nv == v; },
'!=': function(nv, v) { return nv != v; },
'^=': function(nv, v) { return nv.startsWith(v); },
'$=': function(nv, v) { return nv.endsWith(v); },
'*=': function(nv, v) { return nv.include(v); },
'~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
'|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
},
matchElements: function(elements, expression) {
var matches = new Selector(expression).findElements(), h = Selector.handlers;
h.mark(matches);
for (var i = 0, results = [], element; element = elements[i]; i++)
if (element._counted) results.push(element);
h.unmark(matches);
return results;
},
findElement: function(elements, expression, index) {
if (Object.isNumber(expression)) {
index = expression; expression = false;
}
return Selector.matchElements(elements, expression || '*')[index || 0];
},
findChildElements: function(element, expressions) {
var exprs = expressions.join(',');
expressions = [];
exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
expressions.push(m[1].strip());
});
var results = [], h = Selector.handlers;
for (var i = 0, l = expressions.length, selector; i < l; i++) {
selector = new Selector(expressions[i].strip());
h.concat(results, selector.findElements(element));
}
return (l > 1) ? h.unique(results) : results;
}
});
if (Prototype.Browser.IE) {
// IE returns comment nodes on getElementsByTagName("*").
// Filter them out.
Selector.handlers.concat = function(a, b) {
for (var i = 0, node; node = b[i]; i++)
if (node.tagName !== "!") a.push(node);
return a;
};
}
function $$() {
return Selector.findChildElements(document, $A(arguments));
}
var Form = {
reset: function(form) {
$(form).reset();
return form;
},
serializeElements: function(elements, options) {
if (typeof options != 'object') options = { hash: !!options };
else if (Object.isUndefined(options.hash)) options.hash = true;
var key, value, submitted = false, submit = options.submit;
var data = elements.inject({ }, function(result, element) {
if (!element.disabled && element.name) {
key = element.name; value = $(element).getValue();
if (value != null && (element.type != 'submit' || (!submitted &&
submit !== false && (!submit || key == submit) && (submitted = true)))) {
if (key in result) {
// a key is already present; construct an array of values
if (!Object.isArray(result[key])) result[key] = [result[key]];
result[key].push(value);
}
else result[key] = value;
}
}
return result;
});
return options.hash ? data : Object.toQueryString(data);
}
};
Form.Methods = {
serialize: function(form, options) {
return Form.serializeElements(Form.getElements(form), options);
},
getElements: function(form) {
return $A($(form).getElementsByTagName('*')).inject([],
function(elements, child) {
if (Form.Element.Serializers[child.tagName.toLowerCase()])
elements.push(Element.extend(child));
return elements;
}
);
},
getInputs: function(form, typeName, name) {
form = $(form);
var inputs = form.getElementsByTagName('input');
if (!typeName && !name) return $A(inputs).map(Element.extend);
for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
var input = inputs[i];
if ((typeName && input.type != typeName) || (name && input.name != name))
continue;
matchingInputs.push(Element.extend(input));
}
return matchingInputs;
},
disable: function(form) {
form = $(form);
Form.getElements(form).invoke('disable');
return form;
},
enable: function(form) {
form = $(form);
Form.getElements(form).invoke('enable');
return form;
},
findFirstElement: function(form) {
var elements = $(form).getElements().findAll(function(element) {
return 'hidden' != element.type && !element.disabled;
});
var firstByIndex = elements.findAll(function(element) {
return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
}).sortBy(function(element) { return element.tabIndex }).first();
return firstByIndex ? firstByIndex : elements.find(function(element) {
return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
});
},
focusFirstElement: function(form) {
form = $(form);
form.findFirstElement().activate();
return form;
},
request: function(form, options) {
form = $(form), options = Object.clone(options || { });
var params = options.parameters, action = form.readAttribute('action') || '';
if (action.blank()) action = window.location.href;
options.parameters = form.serialize(true);
if (params) {
if (Object.isString(params)) params = params.toQueryParams();
Object.extend(options.parameters, params);
}
if (form.hasAttribute('method') && !options.method)
options.method = form.method;
return new Ajax.Request(action, options);
}
};
/*--------------------------------------------------------------------------*/
Form.Element = {
focus: function(element) {
$(element).focus();
return element;
},
select: function(element) {
$(element).select();
return element;
}
};
Form.Element.Methods = {
serialize: function(element) {
element = $(element);
if (!element.disabled && element.name) {
var value = element.getValue();
if (value != undefined) {
var pair = { };
pair[element.name] = value;
return Object.toQueryString(pair);
}
}
return '';
},
getValue: function(element) {
element = $(element);
var method = element.tagName.toLowerCase();
return Form.Element.Serializers[method](element);
},
setValue: function(element, value) {
element = $(element);
var method = element.tagName.toLowerCase();
Form.Element.Serializers[method](element, value);
return element;
},
clear: function(element) {
$(element).value = '';
return element;
},
present: function(element) {
return $(element).value != '';
},
activate: function(element) {
element = $(element);
try {
element.focus();
if (element.select && (element.tagName.toLowerCase() != 'input' ||
!['button', 'reset', 'submit'].include(element.type)))
element.select();
} catch (e) { }
return element;
},
disable: function(element) {
element = $(element);
element.blur();
element.disabled = true;
return element;
},
enable: function(element) {
element = $(element);
element.disabled = false;
return element;
}
};
/*--------------------------------------------------------------------------*/
var Field = Form.Element;
var $F = Form.Element.Methods.getValue;
/*--------------------------------------------------------------------------*/
Form.Element.Serializers = {
input: function(element, value) {
switch (element.type.toLowerCase()) {
case 'checkbox':
case 'radio':
return Form.Element.Serializers.inputSelector(element, value);
default:
return Form.Element.Serializers.textarea(element, value);
}
},
inputSelector: function(element, value) {
if (Object.isUndefined(value)) return element.checked ? element.value : null;
else element.checked = !!value;
},
textarea: function(element, value) {
if (Object.isUndefined(value)) return element.value;
else element.value = value;
},
select: function(element, index) {
if (Object.isUndefined(index))
return this[element.type == 'select-one' ?
'selectOne' : 'selectMany'](element);
else {
var opt, value, single = !Object.isArray(index);
for (var i = 0, length = element.length; i < length; i++) {
opt = element.options[i];
value = this.optionValue(opt);
if (single) {
if (value == index) {
opt.selected = true;
return;
}
}
else opt.selected = index.include(value);
}
}
},
selectOne: function(element) {
var index = element.selectedIndex;
return index >= 0 ? this.optionValue(element.options[index]) : null;
},
selectMany: function(element) {
var values, length = element.length;
if (!length) return null;
for (var i = 0, values = []; i < length; i++) {
var opt = element.options[i];
if (opt.selected) values.push(this.optionValue(opt));
}
return values;
},
optionValue: function(opt) {
// extend element because hasAttribute may not be native
return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
}
};
/*--------------------------------------------------------------------------*/
Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
initialize: function($super, element, frequency, callback) {
$super(callback, frequency);
this.element = $(element);
this.lastValue = this.getValue();
},
execute: function() {
var value = this.getValue();
if (Object.isString(this.lastValue) && Object.isString(value) ?
this.lastValue != value : String(this.lastValue) != String(value)) {
this.callback(this.element, value);
this.lastValue = value;
}
}
});
Form.Element.Observer = Class.create(Abstract.TimedObserver, {
getValue: function() {
return Form.Element.getValue(this.element);
}
});
Form.Observer = Class.create(Abstract.TimedObserver, {
getValue: function() {
return Form.serialize(this.element);
}
});
/*--------------------------------------------------------------------------*/
Abstract.EventObserver = Class.create({
initialize: function(element, callback) {
this.element = $(element);
this.callback = callback;
this.lastValue = this.getValue();
if (this.element.tagName.toLowerCase() == 'form')
this.registerFormCallbacks();
else
this.registerCallback(this.element);
},
onElementEvent: function() {
var value = this.getValue();
if (this.lastValue != value) {
this.callback(this.element, value);
this.lastValue = value;
}
},
registerFormCallbacks: function() {
Form.getElements(this.element).each(this.registerCallback, this);
},
registerCallback: function(element) {
if (element.type) {
switch (element.type.toLowerCase()) {
case 'checkbox':
case 'radio':
Event.observe(element, 'click', this.onElementEvent.bind(this));
break;
default:
Event.observe(element, 'change', this.onElementEvent.bind(this));
break;
}
}
}
});
Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
getValue: function() {
return Form.Element.getValue(this.element);
}
});
Form.EventObserver = Class.create(Abstract.EventObserver, {
getValue: function() {
return Form.serialize(this.element);
}
});
if (!window.Event) var Event = { };
Object.extend(Event, {
KEY_BACKSPACE: 8,
KEY_TAB: 9,
KEY_RETURN: 13,
KEY_ESC: 27,
KEY_LEFT: 37,
KEY_UP: 38,
KEY_RIGHT: 39,
KEY_DOWN: 40,
KEY_DELETE: 46,
KEY_HOME: 36,
KEY_END: 35,
KEY_PAGEUP: 33,
KEY_PAGEDOWN: 34,
KEY_INSERT: 45,
cache: { },
relatedTarget: function(event) {
var element;
switch(event.type) {
case 'mouseover': element = event.fromElement; break;
case 'mouseout': element = event.toElement; break;
default: return null;
}
return Element.extend(element);
}
});
Event.Methods = (function() {
var isButton;
if (Prototype.Browser.IE) {
var buttonMap = { 0: 1, 1: 4, 2: 2 };
isButton = function(event, code) {
return event.button == buttonMap[code];
};
} else if (Prototype.Browser.WebKit) {
isButton = function(event, code) {
switch (code) {
case 0: return event.which == 1 && !event.metaKey;
case 1: return event.which == 1 && event.metaKey;
default: return false;
}
};
} else {
isButton = function(event, code) {
return event.which ? (event.which === code + 1) : (event.button === code);
};
}
return {
isLeftClick: function(event) { return isButton(event, 0) },
isMiddleClick: function(event) { return isButton(event, 1) },
isRightClick: function(event) { return isButton(event, 2) },
element: function(event) {
var node = Event.extend(event).target;
return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
},
findElement: function(event, expression) {
var element = Event.element(event);
if (!expression) return element;
var elements = [element].concat(element.ancestors());
return Selector.findElement(elements, expression, 0);
},
pointer: function(event) {
return {
x: event.pageX || (event.clientX +
(document.documentElement.scrollLeft || document.body.scrollLeft)),
y: event.pageY || (event.clientY +
(document.documentElement.scrollTop || document.body.scrollTop))
};
},
pointerX: function(event) { return Event.pointer(event).x },
pointerY: function(event) { return Event.pointer(event).y },
stop: function(event) {
Event.extend(event);
event.preventDefault();
event.stopPropagation();
event.stopped = true;
}
};
})();
Event.extend = (function() {
var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
m[name] = Event.Methods[name].methodize();
return m;
});
if (Prototype.Browser.IE) {
Object.extend(methods, {
stopPropagation: function() { this.cancelBubble = true },
preventDefault: function() { this.returnValue = false },
inspect: function() { return "[object Event]" }
});
return function(event) {
if (!event) return false;
if (event._extendedByPrototype) return event;
event._extendedByPrototype = Prototype.emptyFunction;
var pointer = Event.pointer(event);
Object.extend(event, {
target: event.srcElement,
relatedTarget: Event.relatedTarget(event),
pageX: pointer.x,
pageY: pointer.y
});
return Object.extend(event, methods);
};
} else {
Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
Object.extend(Event.prototype, methods);
return Prototype.K;
}
})();
Object.extend(Event, (function() {
var cache = Event.cache;
function getEventID(element) {
if (element._eventID) return element._eventID;
arguments.callee.id = arguments.callee.id || 1;
return element._eventID = ++arguments.callee.id;
}
function getDOMEventName(eventName) {
if (eventName && eventName.include(':')) return "dataavailable";
return eventName;
}
function getCacheForID(id) {
return cache[id] = cache[id] || { };
}
function getWrappersForEventName(id, eventName) {
var c = getCacheForID(id);
return c[eventName] = c[eventName] || [];
}
function createWrapper(element, eventName, handler) {
var id = getEventID(element);
var c = getWrappersForEventName(id, eventName);
if (c.pluck("handler").include(handler)) return false;
var wrapper = function(event) {
if (!Event || !Event.extend ||
(event.eventName && event.eventName != eventName))
return false;
Event.extend(event);
handler.call(element, event);
};
wrapper.handler = handler;
c.push(wrapper);
return wrapper;
}
function findWrapper(id, eventName, handler) {
var c = getWrappersForEventName(id, eventName);
return c.find(function(wrapper) { return wrapper.handler == handler });
}
function destroyWrapper(id, eventName, handler) {
var c = getCacheForID(id);
if (!c[eventName]) return false;
c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
}
function destroyCache() {
for (var id in cache)
for (var eventName in cache[id])
cache[id][eventName] = null;
}
if (window.attachEvent) {
window.attachEvent("onunload", destroyCache);
}
return {
observe: function(element, eventName, handler) {
element = $(element);
var name = getDOMEventName(eventName);
var wrapper = createWrapper(element, eventName, handler);
if (!wrapper) return element;
if (element.addEventListener) {
element.addEventListener(name, wrapper, false);
} else {
element.attachEvent("on" + name, wrapper);
}
return element;
},
stopObserving: function(element, eventName, handler) {
element = $(element);
var id = getEventID(element), name = getDOMEventName(eventName);
if (!handler && eventName) {
getWrappersForEventName(id, eventName).each(function(wrapper) {
element.stopObserving(eventName, wrapper.handler);
});
return element;
} else if (!eventName) {
Object.keys(getCacheForID(id)).each(function(eventName) {
element.stopObserving(eventName);
});
return element;
}
var wrapper = findWrapper(id, eventName, handler);
if (!wrapper) return element;
if (element.removeEventListener) {
element.removeEventListener(name, wrapper, false);
} else {
element.detachEvent("on" + name, wrapper);
}
destroyWrapper(id, eventName, handler);
return element;
},
fire: function(element, eventName, memo) {
element = $(element);
if (element == document && document.createEvent && !element.dispatchEvent)
element = document.documentElement;
var event;
if (document.createEvent) {
event = document.createEvent("HTMLEvents");
event.initEvent("dataavailable", true, true);
} else {
event = document.createEventObject();
event.eventType = "ondataavailable";
}
event.eventName = eventName;
event.memo = memo || { };
if (document.createEvent) {
element.dispatchEvent(event);
} else {
element.fireEvent(event.eventType, event);
}
return Event.extend(event);
}
};
})());
Object.extend(Event, Event.Methods);
Element.addMethods({
fire: Event.fire,
observe: Event.observe,
stopObserving: Event.stopObserving
});
Object.extend(document, {
fire: Element.Methods.fire.methodize(),
observe: Element.Methods.observe.methodize(),
stopObserving: Element.Methods.stopObserving.methodize(),
loaded: false
});
(function() {
/* Support for the DOMContentLoaded event is based on work by Dan Webb,
Matthias Miller, Dean Edwards and John Resig. */
var timer;
function fireContentLoadedEvent() {
if (document.loaded) return;
if (timer) window.clearInterval(timer);
document.fire("dom:loaded");
document.loaded = true;
}
if (document.addEventListener) {
if (Prototype.Browser.WebKit) {
timer = window.setInterval(function() {
if (/loaded|complete/.test(document.readyState))
fireContentLoadedEvent();
}, 0);
Event.observe(window, "load", fireContentLoadedEvent);
} else {
document.addEventListener("DOMContentLoaded",
fireContentLoadedEvent, false);
}
} else {
document.write("