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JavaScript
/*
json2.js
2012-10-08
Public Domain.
NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
See http://www.JSON.org/js.html
This code should be minified before deployment.
See http://javascript.crockford.com/jsmin.html
USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
NOT CONTROL.
This file creates a global JSON object containing two methods: stringify
and parse.
JSON.stringify(value, replacer, space)
value any JavaScript value, usually an object or array.
replacer an optional parameter that determines how object
values are stringified for objects. It can be a
function or an array of strings.
space an optional parameter that specifies the indentation
of nested structures. If it is omitted, the text will
be packed without extra whitespace. If it is a number,
it will specify the number of spaces to indent at each
level. If it is a string (such as '\t' or ' '),
it contains the characters used to indent at each level.
This method produces a JSON text from a JavaScript value.
When an object value is found, if the object contains a toJSON
method, its toJSON method will be called and the result will be
stringified. A toJSON method does not serialize: it returns the
value represented by the name/value pair that should be serialized,
or undefined if nothing should be serialized. The toJSON method
will be passed the key associated with the value, and this will be
bound to the value
For example, this would serialize Dates as ISO strings.
Date.prototype.toJSON = function (key) {
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
return this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z';
};
You can provide an optional replacer method. It will be passed the
key and value of each member, with this bound to the containing
object. The value that is returned from your method will be
serialized. If your method returns undefined, then the member will
be excluded from the serialization.
If the replacer parameter is an array of strings, then it will be
used to select the members to be serialized. It filters the results
such that only members with keys listed in the replacer array are
stringified.
Values that do not have JSON representations, such as undefined or
functions, will not be serialized. Such values in objects will be
dropped; in arrays they will be replaced with null. You can use
a replacer function to replace those with JSON values.
JSON.stringify(undefined) returns undefined.
The optional space parameter produces a stringification of the
value that is filled with line breaks and indentation to make it
easier to read.
If the space parameter is a non-empty string, then that string will
be used for indentation. If the space parameter is a number, then
the indentation will be that many spaces.
Example:
text = JSON.stringify(['e', {pluribus: 'unum'}]);
// text is '["e",{"pluribus":"unum"}]'
text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
// text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
text = JSON.stringify([new Date()], function (key, value) {
return this[key] instanceof Date ?
'Date(' + this[key] + ')' : value;
});
// text is '["Date(---current time---)"]'
JSON.parse(text, reviver)
This method parses a JSON text to produce an object or array.
It can throw a SyntaxError exception.
The optional reviver parameter is a function that can filter and
transform the results. It receives each of the keys and values,
and its return value is used instead of the original value.
If it returns what it received, then the structure is not modified.
If it returns undefined then the member is deleted.
Example:
// Parse the text. Values that look like ISO date strings will
// be converted to Date objects.
myData = JSON.parse(text, function (key, value) {
var a;
if (typeof value === 'string') {
a =
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
if (a) {
return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+a[5], +a[6]));
}
}
return value;
});
myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
var d;
if (typeof value === 'string' &&
value.slice(0, 5) === 'Date(' &&
value.slice(-1) === ')') {
d = new Date(value.slice(5, -1));
if (d) {
return d;
}
}
return value;
});
This is a reference implementation. You are free to copy, modify, or
redistribute.
*/
/*jslint evil: true, regexp: true */
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
lastIndex, length, parse, prototype, push, replace, slice, stringify,
test, toJSON, toString, valueOf
*/
// Create a JSON object only if one does not already exist. We create the
// methods in a closure to avoid creating global variables.
if (typeof JSON !== 'object') {
JSON = {};
}
(function () {
'use strict';
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
if (typeof Date.prototype.toJSON !== 'function') {
Date.prototype.toJSON = function (key) {
return isFinite(this.valueOf())
? this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z'
: null;
};
String.prototype.toJSON =
Number.prototype.toJSON =
Boolean.prototype.toJSON = function (key) {
return this.valueOf();
};
}
var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
gap,
indent,
meta = { // table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
},
rep;
function quote(string) {
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.
escapable.lastIndex = 0;
return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
var c = meta[a];
return typeof c === 'string'
? c
: '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
}) + '"' : '"' + string + '"';
}
function str(key, holder) {
// Produce a string from holder[key].
var i, // The loop counter.
k, // The member key.
v, // The member value.
length,
mind = gap,
partial,
value = holder[key];
// If the value has a toJSON method, call it to obtain a replacement value.
if (value && typeof value === 'object' &&
typeof value.toJSON === 'function') {
value = value.toJSON(key);
}
// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.
if (typeof rep === 'function') {
value = rep.call(holder, key, value);
}
// What happens next depends on the value's type.
switch (typeof value) {
case 'string':
return quote(value);
case 'number':
// JSON numbers must be finite. Encode non-finite numbers as null.
return isFinite(value) ? String(value) : 'null';
case 'boolean':
case 'null':
// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.
return String(value);
// If the type is 'object', we might be dealing with an object or an array or
// null.
case 'object':
// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.
if (!value) {
return 'null';
}
// Make an array to hold the partial results of stringifying this object value.
gap += indent;
partial = [];
// Is the value an array?
if (Object.prototype.toString.apply(value) === '[object Array]') {
// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.
length = value.length;
for (i = 0; i < length; i += 1) {
partial[i] = str(i, value) || 'null';
}
// Join all of the elements together, separated with commas, and wrap them in
// brackets.
v = partial.length === 0
? '[]'
: gap
? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
: '[' + partial.join(',') + ']';
gap = mind;
return v;
}
// If the replacer is an array, use it to select the members to be stringified.
if (rep && typeof rep === 'object') {
length = rep.length;
for (i = 0; i < length; i += 1) {
if (typeof rep[i] === 'string') {
k = rep[i];
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
} else {
// Otherwise, iterate through all of the keys in the object.
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
}
// Join all of the member texts together, separated with commas,
// and wrap them in braces.
v = partial.length === 0
? '{}'
: gap
? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
: '{' + partial.join(',') + '}';
gap = mind;
return v;
}
}
// If the JSON object does not yet have a stringify method, give it one.
if (typeof JSON.stringify !== 'function') {
JSON.stringify = function (value, replacer, space) {
// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.
var i;
gap = '';
indent = '';
// If the space parameter is a number, make an indent string containing that
// many spaces.
if (typeof space === 'number') {
for (i = 0; i < space; i += 1) {
indent += ' ';
}
// If the space parameter is a string, it will be used as the indent string.
} else if (typeof space === 'string') {
indent = space;
}
// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.
rep = replacer;
if (replacer && typeof replacer !== 'function' &&
(typeof replacer !== 'object' ||
typeof replacer.length !== 'number')) {
throw new Error('JSON.stringify');
}
// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.
return str('', {'': value});
};
}
// If the JSON object does not yet have a parse method, give it one.
if (typeof JSON.parse !== 'function') {
JSON.parse = function (text, reviver) {
// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.
var j;
function walk(holder, key) {
// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.
var k, v, value = holder[key];
if (value && typeof value === 'object') {
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = walk(value, k);
if (v !== undefined) {
value[k] = v;
} else {
delete value[k];
}
}
}
}
return reviver.call(holder, key, value);
}
// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.
text = String(text);
cx.lastIndex = 0;
if (cx.test(text)) {
text = text.replace(cx, function (a) {
return '\\u' +
('0000' + a.charCodeAt(0).toString(16)).slice(-4);
});
}
// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.
// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
if (/^[\],:{}\s]*$/
.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
.replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.
j = eval('(' + text + ')');
// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.
return typeof reviver === 'function'
? walk({'': j}, '')
: j;
}
// If the text is not JSON parseable, then a SyntaxError is thrown.
throw new SyntaxError('JSON.parse');
};
}
}());/**
* History.js ExtJS Adapter
* @author Sean Adkinson <sean.adkinson@gmail.com>
* @copyright 2012 Sean Adkinson <sean.adkinson@gmail.com>
* @license New BSD License <http://creativecommons.org/licenses/BSD/>
*/
// Closure
(function(window,undefined){
"use strict";
// Localise Globals
var
History = window.History = window.History||{},
Ext = window.Ext;
window.JSON = {
stringify: Ext.JSON.encode,
parse: Ext.JSON.decode
};
// Check Existence
if ( typeof History.Adapter !== 'undefined' ) {
throw new Error('History.js Adapter has already been loaded...');
}
// Add the Adapter
History.Adapter = {
observables: {},
/**
* History.Adapter.bind(el,event,callback)
* @param {Element|string} el
* @param {string} event - custom and standard events
* @param {function} callback
* @param {Object} scope
* @return {void}
*/
bind: function(element,eventName,callback,scope){
Ext.EventManager.addListener(element, eventName, callback, scope);
//bind an observable to the element that will let us "trigger" events on it
var id = Ext.id(element, 'history-'), observable = this.observables[id];
if (!observable) {
observable = Ext.create('Ext.util.Observable');
this.observables[id] = observable;
}
observable.on(eventName, callback, scope);
},
/**
* History.Adapter.trigger(el,event)
* @param {Element|string} el
* @param {string} event - custom and standard events
* @param {Object=} extra - a object of extra event data (optional)
* @return {void}
*/
trigger: function(element,eventName,extra){
var id = Ext.id(element, 'history-'), observable = this.observables[id];
if (observable) {
observable.fireEvent(eventName, extra);
}
},
/**
* History.Adapter.extractEventData(key,event,extra)
* @param {string} key - key for the event data to extract
* @param {string} event - custom and standard events
* @param {Object=} extra - a object of extra event data (optional)
* @return {mixed}
*/
extractEventData: function(key,event,extra){
var result = (event && event.browserEvent && event.browserEvent[key]) || (extra && extra[key]) || undefined;
return result;
},
/**
* History.Adapter.onDomLoad(callback)
* @param {function} callback
* @return {void}
*/
onDomLoad: function(callback) {
Ext.onReady(callback);
}
};
// Try and Initialise History
if ( typeof History.init !== 'undefined' ) {
History.init();
}
})(window);/**
* History.js HTML4 Support
* Depends on the HTML5 Support
* @author Benjamin Arthur Lupton <contact@balupton.com>
* @copyright 2010-2011 Benjamin Arthur Lupton <contact@balupton.com>
* @license New BSD License <http://creativecommons.org/licenses/BSD/>
*/
(function(window,undefined){
"use strict";
// ========================================================================
// Initialise
// Localise Globals
var
document = window.document, // Make sure we are using the correct document
setTimeout = window.setTimeout||setTimeout,
clearTimeout = window.clearTimeout||clearTimeout,
setInterval = window.setInterval||setInterval,
History = window.History = window.History||{}; // Public History Object
// Check Existence
if ( typeof History.initHtml4 !== 'undefined' ) {
throw new Error('History.js HTML4 Support has already been loaded...');
}
// ========================================================================
// Initialise HTML4 Support
// Initialise HTML4 Support
History.initHtml4 = function(){
// Initialise
if ( typeof History.initHtml4.initialized !== 'undefined' ) {
// Already Loaded
return false;
}
else {
History.initHtml4.initialized = true;
}
// ====================================================================
// Properties
/**
* History.enabled
* Is History enabled?
*/
History.enabled = true;
// ====================================================================
// Hash Storage
/**
* History.savedHashes
* Store the hashes in an array
*/
History.savedHashes = [];
/**
* History.isLastHash(newHash)
* Checks if the hash is the last hash
* @param {string} newHash
* @return {boolean} true
*/
History.isLastHash = function(newHash){
// Prepare
var oldHash = History.getHashByIndex(),
isLast;
// Check
isLast = newHash === oldHash;
// Return isLast
return isLast;
};
/**
* History.isHashEqual(newHash, oldHash)
* Checks to see if two hashes are functionally equal
* @param {string} newHash
* @param {string} oldHash
* @return {boolean} true
*/
History.isHashEqual = function(newHash, oldHash){
newHash = encodeURIComponent(newHash).replace(/%25/g, "%");
oldHash = encodeURIComponent(oldHash).replace(/%25/g, "%");
return newHash === oldHash;
};
/**
* History.saveHash(newHash)
* Push a Hash
* @param {string} newHash
* @return {boolean} true
*/
History.saveHash = function(newHash){
// Check Hash
if ( History.isLastHash(newHash) ) {
return false;
}
// Push the Hash
History.savedHashes.push(newHash);
// Return true
return true;
};
/**
* History.getHashByIndex()
* Gets a hash by the index
* @param {integer} index
* @return {string}
*/
History.getHashByIndex = function(index){
// Prepare
var hash = null;
// Handle
if ( typeof index === 'undefined' ) {
// Get the last inserted
hash = History.savedHashes[History.savedHashes.length-1];
}
else if ( index < 0 ) {
// Get from the end
hash = History.savedHashes[History.savedHashes.length+index];
}
else {
// Get from the beginning
hash = History.savedHashes[index];
}
// Return hash
return hash;
};
// ====================================================================
// Discarded States
/**
* History.discardedHashes
* A hashed array of discarded hashes
*/
History.discardedHashes = {};
/**
* History.discardedStates
* A hashed array of discarded states
*/
History.discardedStates = {};
/**
* History.discardState(State)
* Discards the state by ignoring it through History
* @param {object} State
* @return {true}
*/
History.discardState = function(discardedState,forwardState,backState){
//History.debug('History.discardState', arguments);
// Prepare
var discardedStateHash = History.getHashByState(discardedState),
discardObject;
// Create Discard Object
discardObject = {
'discardedState': discardedState,
'backState': backState,
'forwardState': forwardState
};
// Add to DiscardedStates
History.discardedStates[discardedStateHash] = discardObject;
// Return true
return true;
};
/**
* History.discardHash(hash)
* Discards the hash by ignoring it through History
* @param {string} hash
* @return {true}
*/
History.discardHash = function(discardedHash,forwardState,backState){
//History.debug('History.discardState', arguments);
// Create Discard Object
var discardObject = {
'discardedHash': discardedHash,
'backState': backState,
'forwardState': forwardState
};
// Add to discardedHash
History.discardedHashes[discardedHash] = discardObject;
// Return true
return true;
};
/**
* History.discardedState(State)
* Checks to see if the state is discarded
* @param {object} State
* @return {bool}
*/
History.discardedState = function(State){
// Prepare
var StateHash = History.getHashByState(State),
discarded;
// Check
discarded = History.discardedStates[StateHash]||false;
// Return true
return discarded;
};
/**
* History.discardedHash(hash)
* Checks to see if the state is discarded
* @param {string} State
* @return {bool}
*/
History.discardedHash = function(hash){
// Check
var discarded = History.discardedHashes[hash]||false;
// Return true
return discarded;
};
/**
* History.recycleState(State)
* Allows a discarded state to be used again
* @param {object} data
* @param {string} title
* @param {string} url
* @return {true}
*/
History.recycleState = function(State){
//History.debug('History.recycleState', arguments);
// Prepare
var StateHash = History.getHashByState(State);
// Remove from DiscardedStates
if ( History.discardedState(State) ) {
delete History.discardedStates[StateHash];
}
// Return true
return true;
};
// ====================================================================
// HTML4 HashChange Support
if ( History.emulated.hashChange ) {
/*
* We must emulate the HTML4 HashChange Support by manually checking for hash changes
*/
/**
* History.hashChangeInit()
* Init the HashChange Emulation
*/
History.hashChangeInit = function(){
// Define our Checker Function
History.checkerFunction = null;
// Define some variables that will help in our checker function
var lastDocumentHash = '',
iframeId, iframe,
lastIframeHash, checkerRunning,
startedWithHash = Boolean(History.getHash());
// Handle depending on the browser
if ( History.isInternetExplorer() ) {
// IE6 and IE7
// We need to use an iframe to emulate the back and forward buttons
// Create iFrame
iframeId = 'historyjs-iframe';
iframe = document.createElement('iframe');
// Adjust iFarme
// IE 6 requires iframe to have a src on HTTPS pages, otherwise it will throw a
// "This page contains both secure and nonsecure items" warning.
iframe.setAttribute('id', iframeId);
iframe.setAttribute('src', '#');
iframe.style.display = 'none';
// Append iFrame
document.body.appendChild(iframe);
// Create initial history entry
iframe.contentWindow.document.open();
iframe.contentWindow.document.close();
// Define some variables that will help in our checker function
lastIframeHash = '';
checkerRunning = false;
// Define the checker function
History.checkerFunction = function(){
// Check Running
if ( checkerRunning ) {
return false;
}
// Update Running
checkerRunning = true;
// Fetch
var
documentHash = History.getHash(),
iframeHash = History.getHash(iframe.contentWindow.document);
// The Document Hash has changed (application caused)
if ( documentHash !== lastDocumentHash ) {
// Equalise
lastDocumentHash = documentHash;
// Create a history entry in the iframe
if ( iframeHash !== documentHash ) {
//History.debug('hashchange.checker: iframe hash change', 'documentHash (new):', documentHash, 'iframeHash (old):', iframeHash);
// Equalise
lastIframeHash = iframeHash = documentHash;
// Create History Entry
iframe.contentWindow.document.open();
iframe.contentWindow.document.close();
// Update the iframe's hash
iframe.contentWindow.document.location.hash = History.escapeHash(documentHash);
}
// Trigger Hashchange Event
History.Adapter.trigger(window,'hashchange');
}
// The iFrame Hash has changed (back button caused)
else if ( iframeHash !== lastIframeHash ) {
//History.debug('hashchange.checker: iframe hash out of sync', 'iframeHash (new):', iframeHash, 'documentHash (old):', documentHash);
// Equalise
lastIframeHash = iframeHash;
// If there is no iframe hash that means we're at the original
// iframe state.
// And if there was a hash on the original request, the original
// iframe state was replaced instantly, so skip this state and take
// the user back to where they came from.
if (startedWithHash && iframeHash === '') {
History.back();
}
else {
// Update the Hash
History.setHash(iframeHash,false);
}
}
// Reset Running
checkerRunning = false;
// Return true
return true;
};
}
else {
// We are not IE
// Firefox 1 or 2, Opera
// Define the checker function
History.checkerFunction = function(){
// Prepare
var documentHash = History.getHash()||'';
// The Document Hash has changed (application caused)
if ( documentHash !== lastDocumentHash ) {
// Equalise
lastDocumentHash = documentHash;
// Trigger Hashchange Event
History.Adapter.trigger(window,'hashchange');
}
// Return true
return true;
};
}
// Apply the checker function
History.intervalList.push(setInterval(History.checkerFunction, History.options.hashChangeInterval));
// Done
return true;
}; // History.hashChangeInit
// Bind hashChangeInit
History.Adapter.onDomLoad(History.hashChangeInit);
} // History.emulated.hashChange
// ====================================================================
// HTML5 State Support
// Non-Native pushState Implementation
if ( History.emulated.pushState ) {
/*
* We must emulate the HTML5 State Management by using HTML4 HashChange
*/
/**
* History.onHashChange(event)
* Trigger HTML5's window.onpopstate via HTML4 HashChange Support
*/
History.onHashChange = function(event){
//History.debug('History.onHashChange', arguments);
// Prepare
var currentUrl = ((event && event.newURL) || History.getLocationHref()),
currentHash = History.getHashByUrl(currentUrl),
currentState = null,
currentStateHash = null,
currentStateHashExits = null,
discardObject;
// Check if we are the same state
if ( History.isLastHash(currentHash) ) {
// There has been no change (just the page's hash has finally propagated)
//History.debug('History.onHashChange: no change');
History.busy(false);
return false;
}
// Reset the double check
History.doubleCheckComplete();
// Store our location for use in detecting back/forward direction
History.saveHash(currentHash);
// Expand Hash
if ( currentHash && History.isTraditionalAnchor(currentHash) ) {
//History.debug('History.onHashChange: traditional anchor', currentHash);
// Traditional Anchor Hash
History.Adapter.trigger(window,'anchorchange');
History.busy(false);
return false;
}
// Create State
currentState = History.extractState(History.getFullUrl(currentHash||History.getLocationHref()),true);
// Check if we are the same state
if ( History.isLastSavedState(currentState) ) {
//History.debug('History.onHashChange: no change');
// There has been no change (just the page's hash has finally propagated)
History.busy(false);
return false;
}
// Create the state Hash
currentStateHash = History.getHashByState(currentState);
// Check if we are DiscardedState
discardObject = History.discardedState(currentState);
if ( discardObject ) {
// Ignore this state as it has been discarded and go back to the state before it
if ( History.getHashByIndex(-2) === History.getHashByState(discardObject.forwardState) ) {
// We are going backwards
//History.debug('History.onHashChange: go backwards');
History.back(false);
} else {
// We are going forwards
//History.debug('History.onHashChange: go forwards');
History.forward(false);
}
return false;
}
// Push the new HTML5 State
//History.debug('History.onHashChange: success hashchange');
History.pushState(currentState.data,currentState.title,encodeURI(currentState.url),false);
// End onHashChange closure
return true;
};
History.Adapter.bind(window,'hashchange',History.onHashChange);
/**
* History.pushState(data,title,url)
* Add a new State to the history object, become it, and trigger onpopstate
* We have to trigger for HTML4 compatibility
* @param {object} data
* @param {string} title
* @param {string} url
* @return {true}
*/
History.pushState = function(data,title,url,queue){
//History.debug('History.pushState: called', arguments);
// We assume that the URL passed in is URI-encoded, but this makes
// sure that it's fully URI encoded; any '%'s that are encoded are
// converted back into '%'s
url = encodeURI(url).replace(/%25/g, "%");
// Check the State
if ( History.getHashByUrl(url) ) {
throw new Error('History.js does not support states with fragment-identifiers (hashes/anchors).');
}
// Handle Queueing
if ( queue !== false && History.busy() ) {
// Wait + Push to Queue
//History.debug('History.pushState: we must wait', arguments);
History.pushQueue({
scope: History,
callback: History.pushState,
args: arguments,
queue: queue
});
return false;
}
// Make Busy
History.busy(true);
// Fetch the State Object
var newState = History.createStateObject(data,title,url),
newStateHash = History.getHashByState(newState),
oldState = History.getState(false),
oldStateHash = History.getHashByState(oldState),
html4Hash = History.getHash(),
wasExpected = History.expectedStateId == newState.id;
// Store the newState
History.storeState(newState);
History.expectedStateId = newState.id;
// Recycle the State
History.recycleState(newState);
// Force update of the title
History.setTitle(newState);
// Check if we are the same State
if ( newStateHash === oldStateHash ) {
//History.debug('History.pushState: no change', newStateHash);
History.busy(false);
return false;
}
// Update HTML5 State
History.saveState(newState);
// Fire HTML5 Event
if(!wasExpected)
History.Adapter.trigger(window,'statechange');
// Update HTML4 Hash
if ( !History.isHashEqual(newStateHash, html4Hash) && !History.isHashEqual(newStateHash, History.getShortUrl(History.getLocationHref())) ) {
History.setHash(newStateHash,false);
}
History.busy(false);
// End pushState closure
return true;
};
/**
* History.replaceState(data,title,url)
* Replace the State and trigger onpopstate
* We have to trigger for HTML4 compatibility
* @param {object} data
* @param {string} title
* @param {string} url
* @return {true}
*/
History.replaceState = function(data,title,url,queue){
//History.debug('History.replaceState: called', arguments);
// We assume that the URL passed in is URI-encoded, but this makes
// sure that it's fully URI encoded; any '%'s that are encoded are
// converted back into '%'s
url = encodeURI(url).replace(/%25/g, "%");
// Check the State
if ( History.getHashByUrl(url) ) {
throw new Error('History.js does not support states with fragment-identifiers (hashes/anchors).');
}
// Handle Queueing
if ( queue !== false && History.busy() ) {
// Wait + Push to Queue
//History.debug('History.replaceState: we must wait', arguments);
History.pushQueue({
scope: History,
callback: History.replaceState,
args: arguments,
queue: queue
});
return false;
}
// Make Busy
History.busy(true);
// Fetch the State Objects
var newState = History.createStateObject(data,title,url),
newStateHash = History.getHashByState(newState),
oldState = History.getState(false),
oldStateHash = History.getHashByState(oldState),
previousState = History.getStateByIndex(-2);
// Discard Old State
History.discardState(oldState,newState,previousState);
// If the url hasn't changed, just store and save the state
// and fire a statechange event to be consistent with the
// html 5 api
if ( newStateHash === oldStateHash ) {
// Store the newState
History.storeState(newState);
History.expectedStateId = newState.id;
// Recycle the State
History.recycleState(newState);
// Force update of the title
History.setTitle(newState);
// Update HTML5 State
History.saveState(newState);
// Fire HTML5 Event
//History.debug('History.pushState: trigger popstate');
History.Adapter.trigger(window,'statechange');
History.busy(false);
}
else {
// Alias to PushState
History.pushState(newState.data,newState.title,newState.url,false);
}
// End replaceState closure
return true;
};
} // History.emulated.pushState
// ====================================================================
// Initialise
// Non-Native pushState Implementation
if ( History.emulated.pushState ) {
/**
* Ensure initial state is handled correctly
*/
if ( History.getHash() && !History.emulated.hashChange ) {
History.Adapter.onDomLoad(function(){
History.Adapter.trigger(window,'hashchange');
});
}
} // History.emulated.pushState
}; // History.initHtml4
// Try to Initialise History
if ( typeof History.init !== 'undefined' ) {
History.init();
}
})(window);
/**
* History.js Core
* @author Benjamin Arthur Lupton <contact@balupton.com>
* @copyright 2010-2011 Benjamin Arthur Lupton <contact@balupton.com>
* @license New BSD License <http://creativecommons.org/licenses/BSD/>
*/
(function(window,undefined){
"use strict";
// ========================================================================
// Initialise
// Localise Globals
var
console = window.console||undefined, // Prevent a JSLint complain
document = window.document, // Make sure we are using the correct document
navigator = window.navigator, // Make sure we are using the correct navigator
sessionStorage = window.sessionStorage||false, // sessionStorage
setTimeout = window.setTimeout,
clearTimeout = window.clearTimeout,
setInterval = window.setInterval,
clearInterval = window.clearInterval,
JSON = window.JSON,
alert = window.alert,
History = window.History = window.History||{}, // Public History Object
history = window.history; // Old History Object
try {
sessionStorage.setItem('TEST', '1');
sessionStorage.removeItem('TEST');
} catch(e) {
sessionStorage = false;
}
// MooTools Compatibility
JSON.stringify = JSON.stringify||JSON.encode;
JSON.parse = JSON.parse||JSON.decode;
// Check Existence
if ( typeof History.init !== 'undefined' ) {
throw new Error('History.js Core has already been loaded...');
}
// Initialise History
History.init = function(options){
// Check Load Status of Adapter
if ( typeof History.Adapter === 'undefined' ) {
return false;
}
// Check Load Status of Core
if ( typeof History.initCore !== 'undefined' ) {
History.initCore();
}
// Check Load Status of HTML4 Support
if ( typeof History.initHtml4 !== 'undefined' ) {
History.initHtml4();
}
// Return true
return true;
};
// ========================================================================
// Initialise Core
// Initialise Core
History.initCore = function(options){
// Initialise
if ( typeof History.initCore.initialized !== 'undefined' ) {
// Already Loaded
return false;
}
else {
History.initCore.initialized = true;
}
// ====================================================================
// Options
/**
* History.options
* Configurable options
*/
History.options = History.options||{};
/**
* History.options.hashChangeInterval
* How long should the interval be before hashchange checks
*/
History.options.hashChangeInterval = History.options.hashChangeInterval || 100;
/**
* History.options.safariPollInterval
* How long should the interval be before safari poll checks
*/
History.options.safariPollInterval = History.options.safariPollInterval || 500;
/**
* History.options.doubleCheckInterval
* How long should the interval be before we perform a double check
*/
History.options.doubleCheckInterval = History.options.doubleCheckInterval || 500;
/**
* History.options.disableSuid
* Force History not to append suid
*/
History.options.disableSuid = History.options.disableSuid || false;
/**
* History.options.storeInterval
* How long should we wait between store calls
*/
History.options.storeInterval = History.options.storeInterval || 1000;
/**
* History.options.busyDelay
* How long should we wait between busy events
*/
History.options.busyDelay = History.options.busyDelay || 250;
/**
* History.options.debug
* If true will enable debug messages to be logged
*/
History.options.debug = History.options.debug || false;
/**
* History.options.initialTitle
* What is the title of the initial state
*/
History.options.initialTitle = History.options.initialTitle || document.title;
/**
* History.options.html4Mode
* If true, will force HTMl4 mode (hashtags)
*/
History.options.html4Mode = History.options.html4Mode || false;
/**
* History.options.delayInit
* Want to override default options and call init manually.
*/
History.options.delayInit = History.options.delayInit || false;
// ====================================================================
// Interval record
/**
* History.intervalList
* List of intervals set, to be cleared when document is unloaded.
*/
History.intervalList = [];
/**
* History.clearAllIntervals
* Clears all setInterval instances.
*/
History.clearAllIntervals = function(){
var i, il = History.intervalList;
if (typeof il !== "undefined" && il !== null) {
for (i = 0; i < il.length; i++) {
clearInterval(il[i]);
}
History.intervalList = null;
}
};
// ====================================================================
// Debug
/**
* History.debug(message,...)
* Logs the passed arguments if debug enabled
*/
History.debug = function(){
if ( (History.options.debug||false) ) {
History.log.apply(History,arguments);
}
};
/**
* History.log(message,...)
* Logs the passed arguments
*/
History.log = function(){
// Prepare
var
consoleExists = !(typeof console === 'undefined' || typeof console.log === 'undefined' || typeof console.log.apply === 'undefined'),
textarea = document.getElementById('log'),
message,
i,n,
args,arg
;
// Write to Console
if ( consoleExists ) {
args = Array.prototype.slice.call(arguments);
message = args.shift();
if ( typeof console.debug !== 'undefined' ) {
console.debug.apply(console,[message,args]);
}
else {
console.log.apply(console,[message,args]);
}
}
else {
message = ("\n"+arguments[0]+"\n");
}
// Write to log
for ( i=1,n=arguments.length; i<n; ++i ) {
arg = arguments[i];
if ( typeof arg === 'object' && typeof JSON !== 'undefined' ) {
try {
arg = JSON.stringify(arg);
}
catch ( Exception ) {
// Recursive Object
}
}
message += "\n"+arg+"\n";
}
// Textarea
if ( textarea ) {
textarea.value += message+"\n-----\n";
textarea.scrollTop = textarea.scrollHeight - textarea.clientHeight;
}
// No Textarea, No Console
else if ( !consoleExists ) {
alert(message);
}
// Return true
return true;
};
// ====================================================================
// Emulated Status
/**
* History.getInternetExplorerMajorVersion()
* Get's the major version of Internet Explorer
* @return {integer}
* @license Public Domain
* @author Benjamin Arthur Lupton <contact@balupton.com>
* @author James Padolsey <https://gist.github.com/527683>
*/
History.getInternetExplorerMajorVersion = function(){
var result = History.getInternetExplorerMajorVersion.cached =
(typeof History.getInternetExplorerMajorVersion.cached !== 'undefined')
? History.getInternetExplorerMajorVersion.cached
: (function(){
var v = 3,
div = document.createElement('div'),
all = div.getElementsByTagName('i');
while ( (div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->') && all[0] ) {}
return (v > 4) ? v : false;
})()
;
return result;
};
/**
* History.isInternetExplorer()
* Are we using Internet Explorer?
* @return {boolean}
* @license Public Domain
* @author Benjamin Arthur Lupton <contact@balupton.com>
*/
History.isInternetExplorer = function(){
var result =
History.isInternetExplorer.cached =
(typeof History.isInternetExplorer.cached !== 'undefined')
? History.isInternetExplorer.cached
: Boolean(History.getInternetExplorerMajorVersion())
;
return result;
};
/**
* History.emulated
* Which features require emulating?
*/
if (History.options.html4Mode) {
History.emulated = {
pushState : true,
hashChange: true
};
}
else {
History.emulated = {
pushState: !Boolean(
window.history && window.history.pushState && window.history.replaceState
&& !(
(/ Mobile\/([1-7][a-z]|(8([abcde]|f(1[0-8]))))/i).test(navigator.userAgent) /* disable for versions of iOS before version 4.3 (8F190) */
|| (/AppleWebKit\/5([0-2]|3[0-2])/i).test(navigator.userAgent) /* disable for the mercury iOS browser, or at least older versions of the webkit engine */
)
),
hashChange: Boolean(
!(('onhashchange' in window) || ('onhashchange' in document))
||
(History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 8)
)
};
}
/**
* History.enabled
* Is History enabled?
*/
History.enabled = !History.emulated.pushState;
/**
* History.bugs
* Which bugs are present
*/
History.bugs = {
/**
* Safari 5 and Safari iOS 4 fail to return to the correct state once a hash is replaced by a `replaceState` call
* https://bugs.webkit.org/show_bug.cgi?id=56249
*/
setHash: Boolean(!History.emulated.pushState && navigator.vendor === 'Apple Computer, Inc.' && /AppleWebKit\/5([0-2]|3[0-3])/.test(navigator.userAgent)),
/**
* Safari 5 and Safari iOS 4 sometimes fail to apply the state change under busy conditions
* https://bugs.webkit.org/show_bug.cgi?id=42940
*/
safariPoll: Boolean(!History.emulated.pushState && navigator.vendor === 'Apple Computer, Inc.' && /AppleWebKit\/5([0-2]|3[0-3])/.test(navigator.userAgent)),
/**
* MSIE 6 and 7 sometimes do not apply a hash even it was told to (requiring a second call to the apply function)
*/
ieDoubleCheck: Boolean(History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 8),
/**
* MSIE 6 requires the entire hash to be encoded for the hashes to trigger the onHashChange event
*/
hashEscape: Boolean(History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 7)
};
/**
* History.isEmptyObject(obj)
* Checks to see if the Object is Empty
* @param {Object} obj
* @return {boolean}
*/
History.isEmptyObject = function(obj) {
for ( var name in obj ) {
if ( obj.hasOwnProperty(name) ) {
return false;
}
}
return true;
};
/**
* History.cloneObject(obj)
* Clones a object and eliminate all references to the original contexts
* @param {Object} obj
* @return {Object}
*/
History.cloneObject = function(obj) {
var hash,newObj;
if ( obj ) {
hash = JSON.stringify(obj);
newObj = JSON.parse(hash);
}
else {
newObj = {};
}
return newObj;
};
// ====================================================================
// URL Helpers
/**
* History.getRootUrl()
* Turns "http://mysite.com/dir/page.html?asd" into "http://mysite.com"
* @return {String} rootUrl
*/
History.getRootUrl = function(){
// C