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/trunk/api/js/dojo1.0/dojox/off/offline.js.uncompressed.js
New file
0,0 → 1,4276
/*
Copyright (c) 2004-2007, The Dojo Foundation
All Rights Reserved.
Licensed under the Academic Free License version 2.1 or above OR the
modified BSD license. For more information on Dojo licensing, see:
http://dojotoolkit.org/book/dojo-book-0-9/introduction/licensing
*/
/*
This is a compiled version of Dojo, built for deployment and not for
development. To get an editable version, please visit:
http://dojotoolkit.org
for documentation and information on getting the source.
*/
if(!dojo._hasResource["dojox.storage.Provider"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.storage.Provider"] = true;
dojo.provide("dojox.storage.Provider");
dojo.declare("dojox.storage.Provider", null, {
// summary: A singleton for working with dojox.storage.
// description:
// dojox.storage exposes the current available storage provider on this
// platform. It gives you methods such as dojox.storage.put(),
// dojox.storage.get(), etc.
//
// For more details on dojox.storage, see the primary documentation
// page at
// http://manual.dojotoolkit.org/storage.html
//
// Note for storage provider developers who are creating subclasses-
// This is the base class for all storage providers Specific kinds of
// Storage Providers should subclass this and implement these methods.
// You should avoid initialization in storage provider subclass's
// constructor; instead, perform initialization in your initialize()
// method.
constructor: function(){
},
// SUCCESS: String
// Flag that indicates a put() call to a
// storage provider was succesful.
SUCCESS: "success",
// FAILED: String
// Flag that indicates a put() call to
// a storage provider failed.
FAILED: "failed",
// PENDING: String
// Flag that indicates a put() call to a
// storage provider is pending user approval.
PENDING: "pending",
// SIZE_NOT_AVAILABLE: String
// Returned by getMaximumSize() if this storage provider can not determine
// the maximum amount of data it can support.
SIZE_NOT_AVAILABLE: "Size not available",
// SIZE_NO_LIMIT: String
// Returned by getMaximumSize() if this storage provider has no theoretical
// limit on the amount of data it can store.
SIZE_NO_LIMIT: "No size limit",
// DEFAULT_NAMESPACE: String
// The namespace for all storage operations. This is useful if several
// applications want access to the storage system from the same domain but
// want different storage silos.
DEFAULT_NAMESPACE: "default",
// onHideSettingsUI: Function
// If a function is assigned to this property, then when the settings
// provider's UI is closed this function is called. Useful, for example,
// if the user has just cleared out all storage for this provider using
// the settings UI, and you want to update your UI.
onHideSettingsUI: null,
initialize: function(){
// summary:
// Allows this storage provider to initialize itself. This is
// called after the page has finished loading, so you can not do
// document.writes(). Storage Provider subclasses should initialize
// themselves inside of here rather than in their function
// constructor.
console.warn("dojox.storage.initialize not implemented");
},
isAvailable: function(){ /*Boolean*/
// summary:
// Returns whether this storage provider is available on this
// platform.
console.warn("dojox.storage.isAvailable not implemented");
},
put: function( /*string*/ key,
/*object*/ value,
/*function*/ resultsHandler,
/*string?*/ namespace){
// summary:
// Puts a key and value into this storage system.
// description:
// Example-
// var resultsHandler = function(status, key, message){
// alert("status="+status+", key="+key+", message="+message);
// };
// dojox.storage.put("test", "hello world", resultsHandler);
//
// Important note: if you are using Dojo Storage in conjunction with
// Dojo Offline, then you don't need to provide
// a resultsHandler; this is because for Dojo Offline we
// use Google Gears to persist data, which has unlimited data
// once the user has given permission. If you are using Dojo
// Storage apart from Dojo Offline, then under the covers hidden
// Flash might be used, which is both asychronous and which might
// get denied; in this case you must provide a resultsHandler.
// key:
// A string key to use when retrieving this value in the future.
// value:
// A value to store; this can be any JavaScript type.
// resultsHandler:
// A callback function that will receive three arguments. The
// first argument is one of three values: dojox.storage.SUCCESS,
// dojox.storage.FAILED, or dojox.storage.PENDING; these values
// determine how the put request went. In some storage systems
// users can deny a storage request, resulting in a
// dojox.storage.FAILED, while in other storage systems a storage
// request must wait for user approval, resulting in a
// dojox.storage.PENDING status until the request is either
// approved or denied, resulting in another call back with
// dojox.storage.SUCCESS.
// The second argument in the call back is the key name that was being stored.
// The third argument in the call back is an optional message that
// details possible error messages that might have occurred during
// the storage process.
// namespace:
// Optional string namespace that this value will be placed into;
// if left off, the value will be placed into dojox.storage.DEFAULT_NAMESPACE
console.warn("dojox.storage.put not implemented");
},
get: function(/*string*/ key, /*string?*/ namespace){ /*Object*/
// summary:
// Gets the value with the given key. Returns null if this key is
// not in the storage system.
// key:
// A string key to get the value of.
// namespace:
// Optional string namespace that this value will be retrieved from;
// if left off, the value will be retrieved from dojox.storage.DEFAULT_NAMESPACE
// return: Returns any JavaScript object type; null if the key is not present
console.warn("dojox.storage.get not implemented");
},
hasKey: function(/*string*/ key, /*string?*/ namespace){ /*Boolean*/
// summary: Determines whether the storage has the given key.
return (this.get(key) != null);
},
getKeys: function(/*string?*/ namespace){ /*Array*/
// summary: Enumerates all of the available keys in this storage system.
// return: Array of available keys
console.warn("dojox.storage.getKeys not implemented");
},
clear: function(/*string?*/ namespace){
// summary:
// Completely clears this storage system of all of it's values and
// keys. If 'namespace' is provided just clears the keys in that
// namespace.
console.warn("dojox.storage.clear not implemented");
},
remove: function(/*string*/ key, /*string?*/ namespace){
// summary: Removes the given key from this storage system.
console.warn("dojox.storage.remove not implemented");
},
getNamespaces: function(){ /*string[]*/
console.warn("dojox.storage.getNamespaces not implemented");
},
isPermanent: function(){ /*Boolean*/
// summary:
// Returns whether this storage provider's values are persisted
// when this platform is shutdown.
console.warn("dojox.storage.isPermanent not implemented");
},
getMaximumSize: function(){ /* mixed */
// summary: The maximum storage allowed by this provider
// returns:
// Returns the maximum storage size
// supported by this provider, in
// thousands of bytes (i.e., if it
// returns 60 then this means that 60K
// of storage is supported).
//
// If this provider can not determine
// it's maximum size, then
// dojox.storage.SIZE_NOT_AVAILABLE is
// returned; if there is no theoretical
// limit on the amount of storage
// this provider can return, then
// dojox.storage.SIZE_NO_LIMIT is
// returned
console.warn("dojox.storage.getMaximumSize not implemented");
},
putMultiple: function( /*array*/ keys,
/*array*/ values,
/*function*/ resultsHandler,
/*string?*/ namespace){
// summary:
// Puts multiple keys and values into this storage system.
// description:
// Example-
// var resultsHandler = function(status, key, message){
// alert("status="+status+", key="+key+", message="+message);
// };
// dojox.storage.put(["test"], ["hello world"], resultsHandler);
//
// Important note: if you are using Dojo Storage in conjunction with
// Dojo Offline, then you don't need to provide
// a resultsHandler; this is because for Dojo Offline we
// use Google Gears to persist data, which has unlimited data
// once the user has given permission. If you are using Dojo
// Storage apart from Dojo Offline, then under the covers hidden
// Flash might be used, which is both asychronous and which might
// get denied; in this case you must provide a resultsHandler.
// keys:
// An array of string keys to use when retrieving this value in the future,
// one per value to be stored
// values:
// An array of values to store; this can be any JavaScript type, though the
// performance of plain strings is considerably better
// resultsHandler:
// A callback function that will receive three arguments. The
// first argument is one of three values: dojox.storage.SUCCESS,
// dojox.storage.FAILED, or dojox.storage.PENDING; these values
// determine how the put request went. In some storage systems
// users can deny a storage request, resulting in a
// dojox.storage.FAILED, while in other storage systems a storage
// request must wait for user approval, resulting in a
// dojox.storage.PENDING status until the request is either
// approved or denied, resulting in another call back with
// dojox.storage.SUCCESS.
// The second argument in the call back is the key name that was being stored.
// The third argument in the call back is an optional message that
// details possible error messages that might have occurred during
// the storage process.
// namespace:
// Optional string namespace that this value will be placed into;
// if left off, the value will be placed into dojox.storage.DEFAULT_NAMESPACE
console.warn("dojox.storage.putMultiple not implemented");
// JAC: We could implement a 'default' puMultiple here by just doing each put individually
},
getMultiple: function(/*array*/ keys, /*string?*/ namespace){ /*Object*/
// summary:
// Gets the valuse corresponding to each of the given keys.
// Returns a null array element for each given key that is
// not in the storage system.
// keys:
// An array of string keys to get the value of.
// namespace:
// Optional string namespace that this value will be retrieved from;
// if left off, the value will be retrieved from dojox.storage.DEFAULT_NAMESPACE
// return: Returns any JavaScript object type; null if the key is not present
console.warn("dojox.storage.getMultiple not implemented");
// JAC: We could implement a 'default' getMultiple here by just doing each get individually
},
removeMultiple: function(/*array*/ keys, /*string?*/ namespace) {
// summary: Removes the given keys from this storage system.
// JAC: We could implement a 'default' removeMultiple here by just doing each remove individually
console.warn("dojox.storage.remove not implemented");
},
isValidKeyArray: function( keys) {
if(keys === null || typeof keys === "undefined" || ! keys instanceof Array){
return false;
}
// JAC: This could be optimized by running the key validity test directly over a joined string
for(var k=0;k<keys.length;k++){
if(!this.isValidKey(keys[k])){
return false;
}
}
return true;
},
hasSettingsUI: function(){ /*Boolean*/
// summary: Determines whether this provider has a settings UI.
return false;
},
showSettingsUI: function(){
// summary: If this provider has a settings UI, determined
// by calling hasSettingsUI(), it is shown.
console.warn("dojox.storage.showSettingsUI not implemented");
},
hideSettingsUI: function(){
// summary: If this provider has a settings UI, hides it.
console.warn("dojox.storage.hideSettingsUI not implemented");
},
isValidKey: function(/*string*/ keyName){ /*Boolean*/
// summary:
// Subclasses can call this to ensure that the key given is valid
// in a consistent way across different storage providers. We use
// the lowest common denominator for key values allowed: only
// letters, numbers, and underscores are allowed. No spaces.
if((keyName == null)||(typeof keyName == "undefined")){
return false;
}
return /^[0-9A-Za-z_]*$/.test(keyName);
},
getResourceList: function(){ /* Array[] */
// summary:
// Returns a list of URLs that this
// storage provider might depend on.
// description:
// This method returns a list of URLs that this
// storage provider depends on to do its work.
// This list is used by the Dojo Offline Toolkit
// to cache these resources to ensure the machinery
// used by this storage provider is available offline.
// What is returned is an array of URLs.
return [];
}
});
}
if(!dojo._hasResource["dojox.storage.manager"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.storage.manager"] = true;
dojo.provide("dojox.storage.manager");
//dojo.require("dojo.AdapterRegistry");
// FIXME: refactor this to use an AdapterRegistry
dojox.storage.manager = new function(){
// summary: A singleton class in charge of the dojox.storage system
// description:
// Initializes the storage systems and figures out the best available
// storage options on this platform.
// currentProvider: Object
// The storage provider that was automagically chosen to do storage
// on this platform, such as dojox.storage.FlashStorageProvider.
this.currentProvider = null;
// available: Boolean
// Whether storage of some kind is available.
this.available = false;
this._initialized = false;
this._providers = [];
this._onLoadListeners = [];
this.initialize = function(){
// summary:
// Initializes the storage system and autodetects the best storage
// provider we can provide on this platform
this.autodetect();
};
this.register = function(/*string*/ name, /*Object*/ instance){
// summary:
// Registers the existence of a new storage provider; used by
// subclasses to inform the manager of their existence. The
// storage manager will select storage providers based on
// their ordering, so the order in which you call this method
// matters.
// name:
// The full class name of this provider, such as
// "dojox.storage.FlashStorageProvider".
// instance:
// An instance of this provider, which we will use to call
// isAvailable() on.
this._providers[this._providers.length] = instance; //FIXME: push?
this._providers[name] = instance; // FIXME: this._providers is an array, not a hash
};
this.setProvider = function(storageClass){
// summary:
// Instructs the storageManager to use the given storage class for
// all storage requests.
// description:
// Example-
// dojox.storage.setProvider(
// dojox.storage.IEStorageProvider)
};
this.autodetect = function(){
// summary:
// Autodetects the best possible persistent storage provider
// available on this platform.
//console.debug("dojox.storage.manager.autodetect");
if(this._initialized){ // already finished
//console.debug("dojox.storage.manager already initialized; returning");
return;
}
// a flag to force the storage manager to use a particular
// storage provider type, such as
// djConfig = {forceStorageProvider: "dojox.storage.WhatWGStorageProvider"};
var forceProvider = djConfig["forceStorageProvider"]||false;
// go through each provider, seeing if it can be used
var providerToUse;
//FIXME: use dojo.some
for(var i = 0; i < this._providers.length; i++){
providerToUse = this._providers[i];
if(forceProvider == providerToUse.declaredClass){
// still call isAvailable for this provider, since this helps some
// providers internally figure out if they are available
// FIXME: This should be refactored since it is non-intuitive
// that isAvailable() would initialize some state
providerToUse.isAvailable();
break;
}else if(providerToUse.isAvailable()){
break;
}
}
if(!providerToUse){ // no provider available
this._initialized = true;
this.available = false;
this.currentProvider = null;
console.warn("No storage provider found for this platform");
this.loaded();
return;
}
// create this provider and mix in it's properties
// so that developers can do dojox.storage.put rather
// than dojox.storage.currentProvider.put, for example
this.currentProvider = providerToUse;
dojo.mixin(dojox.storage, this.currentProvider);
// have the provider initialize itself
dojox.storage.initialize();
this._initialized = true;
this.available = true;
};
this.isAvailable = function(){ /*Boolean*/
// summary: Returns whether any storage options are available.
return this.available;
};
this.addOnLoad = function(func){ /* void */
// summary:
// Adds an onload listener to know when Dojo Offline can be used.
// description:
// Adds a listener to know when Dojo Offline can be used. This
// ensures that the Dojo Offline framework is loaded and that the
// local dojox.storage system is ready to be used. This method is
// useful if you don't want to have a dependency on Dojo Events
// when using dojox.storage.
// func: Function
// A function to call when Dojo Offline is ready to go
this._onLoadListeners.push(func);
if(this.isInitialized()){
this._fireLoaded();
}
};
this.removeOnLoad = function(func){ /* void */
// summary: Removes the given onLoad listener
for(var i = 0; i < this._onLoadListeners.length; i++){
if(func == this._onLoadListeners[i]){
this._onLoadListeners = this._onLoadListeners.splice(i, 1);
break;
}
}
};
this.isInitialized = function(){ /*Boolean*/
// summary:
// Returns whether the storage system is initialized and ready to
// be used.
// FIXME: This should REALLY not be in here, but it fixes a tricky
// Flash timing bug
if(this.currentProvider != null
&& this.currentProvider.declaredClass == "dojox.storage.FlashStorageProvider"
&& dojox.flash.ready == false){
return false;
}else{
return this._initialized;
}
};
this.supportsProvider = function(/*string*/ storageClass){ /* Boolean */
// summary: Determines if this platform supports the given storage provider.
// description:
// Example-
// dojox.storage.manager.supportsProvider(
// "dojox.storage.InternetExplorerStorageProvider");
// construct this class dynamically
try{
// dynamically call the given providers class level isAvailable()
// method
var provider = eval("new " + storageClass + "()");
var results = provider.isAvailable();
if(!results){ return false; }
return results;
}catch(e){
return false;
}
};
this.getProvider = function(){ /* Object */
// summary: Gets the current provider
return this.currentProvider;
};
this.loaded = function(){
// summary:
// The storage provider should call this method when it is loaded
// and ready to be used. Clients who will use the provider will
// connect to this method to know when they can use the storage
// system. You can either use dojo.connect to connect to this
// function, or can use dojox.storage.manager.addOnLoad() to add
// a listener that does not depend on the dojo.event package.
// description:
// Example 1-
// if(dojox.storage.manager.isInitialized() == false){
// dojo.connect(dojox.storage.manager, "loaded", TestStorage, "initialize");
// }else{
// dojo.connect(dojo, "loaded", TestStorage, "initialize");
// }
// Example 2-
// dojox.storage.manager.addOnLoad(someFunction);
// FIXME: we should just provide a Deferred for this. That way you
// don't care when this happens or has happened. Deferreds are in Base
this._fireLoaded();
};
this._fireLoaded = function(){
//console.debug("dojox.storage.manager._fireLoaded");
dojo.forEach(this._onLoadListeners, function(i){
try{
i();
}catch(e){ console.debug(e); }
});
};
this.getResourceList = function(){
// summary:
// Returns a list of whatever resources are necessary for storage
// providers to work.
// description:
// This will return all files needed by all storage providers for
// this particular environment type. For example, if we are in the
// browser environment, then this will return the hidden SWF files
// needed by the FlashStorageProvider, even if we don't need them
// for the particular browser we are working within. This is meant
// to faciliate Dojo Offline, which must retrieve all resources we
// need offline into the offline cache -- we retrieve everything
// needed, in case another browser that requires different storage
// mechanisms hits the local offline cache. For example, if we
// were to sync against Dojo Offline on Firefox 2, then we would
// not grab the FlashStorageProvider resources needed for Safari.
var results = [];
dojo.forEach(dojox.storage.manager._providers, function(currentProvider){
results = results.concat(currentProvider.getResourceList());
});
return results;
}
};
}
if(!dojo._hasResource["dojox._sql._crypto"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox._sql._crypto"] = true;
// Taken from http://www.movable-type.co.uk/scripts/aes.html by
// Chris Veness (CLA signed); adapted for Dojo and Google Gears Worker Pool
// by Brad Neuberg, bkn3@columbia.edu
dojo.provide("dojox._sql._crypto");
dojo.mixin(dojox._sql._crypto,{
// _POOL_SIZE:
// Size of worker pool to create to help with crypto
_POOL_SIZE: 100,
encrypt: function(plaintext, password, callback){
// summary:
// Use Corrected Block TEA to encrypt plaintext using password
// (note plaintext & password must be strings not string objects).
// Results will be returned to the 'callback' asychronously.
this._initWorkerPool();
var msg ={plaintext: plaintext, password: password};
msg = dojo.toJson(msg);
msg = "encr:" + String(msg);
this._assignWork(msg, callback);
},
decrypt: function(ciphertext, password, callback){
// summary:
// Use Corrected Block TEA to decrypt ciphertext using password
// (note ciphertext & password must be strings not string objects).
// Results will be returned to the 'callback' asychronously.
this._initWorkerPool();
var msg ={ciphertext: ciphertext, password: password};
msg = dojo.toJson(msg);
msg = "decr:" + String(msg);
this._assignWork(msg, callback);
},
_initWorkerPool: function(){
// bugs in Google Gears prevents us from dynamically creating
// and destroying workers as we need them -- the worker
// pool functionality stops working after a number of crypto
// cycles (probably related to a memory leak in Google Gears).
// this is too bad, since it results in much simpler code.
// instead, we have to create a pool of workers and reuse them. we
// keep a stack of 'unemployed' Worker IDs that are currently not working.
// if a work request comes in, we pop off the 'unemployed' stack
// and put them to work, storing them in an 'employed' hashtable,
// keyed by their Worker ID with the value being the callback function
// that wants the result. when an employed worker is done, we get
// a message in our 'manager' which adds this worker back to the
// unemployed stack and routes the result to the callback that
// wanted it. if all the workers were employed in the past but
// more work needed to be done (i.e. it's a tight labor pool ;)
// then the work messages are pushed onto
// a 'handleMessage' queue as an object tuple{msg: msg, callback: callback}
if(!this._manager){
try{
this._manager = google.gears.factory.create("beta.workerpool", "1.0");
this._unemployed = [];
this._employed ={};
this._handleMessage = [];
var self = this;
this._manager.onmessage = function(msg, sender){
// get the callback necessary to serve this result
var callback = self._employed["_" + sender];
// make this worker unemployed
self._employed["_" + sender] = undefined;
self._unemployed.push("_" + sender);
// see if we need to assign new work
// that was queued up needing to be done
if(self._handleMessage.length){
var handleMe = self._handleMessage.shift();
self._assignWork(handleMe.msg, handleMe.callback);
}
// return results
callback(msg);
}
var workerInit = "function _workerInit(){"
+ "gearsWorkerPool.onmessage = "
+ String(this._workerHandler)
+ ";"
+ "}";
var code = workerInit + " _workerInit();";
// create our worker pool
for(var i = 0; i < this._POOL_SIZE; i++){
this._unemployed.push("_" + this._manager.createWorker(code));
}
}catch(exp){
throw exp.message||exp;
}
}
},
_assignWork: function(msg, callback){
// can we immediately assign this work?
if(!this._handleMessage.length && this._unemployed.length){
// get an unemployed worker
var workerID = this._unemployed.shift().substring(1); // remove _
// list this worker as employed
this._employed["_" + workerID] = callback;
// do the worke
this._manager.sendMessage(msg, workerID);
}else{
// we have to queue it up
this._handleMessage ={msg: msg, callback: callback};
}
},
_workerHandler: function(msg, sender){
/* Begin AES Implementation */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
// Sbox is pre-computed multiplicative inverse in GF(2^8) used in SubBytes and KeyExpansion [§5.1.1]
var Sbox = [0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16];
// Rcon is Round Constant used for the Key Expansion [1st col is 2^(r-1) in GF(2^8)] [§5.2]
var Rcon = [ [0x00, 0x00, 0x00, 0x00],
[0x01, 0x00, 0x00, 0x00],
[0x02, 0x00, 0x00, 0x00],
[0x04, 0x00, 0x00, 0x00],
[0x08, 0x00, 0x00, 0x00],
[0x10, 0x00, 0x00, 0x00],
[0x20, 0x00, 0x00, 0x00],
[0x40, 0x00, 0x00, 0x00],
[0x80, 0x00, 0x00, 0x00],
[0x1b, 0x00, 0x00, 0x00],
[0x36, 0x00, 0x00, 0x00] ];
/*
* AES Cipher function: encrypt 'input' with Rijndael algorithm
*
* takes byte-array 'input' (16 bytes)
* 2D byte-array key schedule 'w' (Nr+1 x Nb bytes)
*
* applies Nr rounds (10/12/14) using key schedule w for 'add round key' stage
*
* returns byte-array encrypted value (16 bytes)
*/
function Cipher(input, w) { // main Cipher function [§5.1]
var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
var Nr = w.length/Nb - 1; // no of rounds: 10/12/14 for 128/192/256-bit keys
var state = [[],[],[],[]]; // initialise 4xNb byte-array 'state' with input [§3.4]
for (var i=0; i<4*Nb; i++) state[i%4][Math.floor(i/4)] = input[i];
state = AddRoundKey(state, w, 0, Nb);
for (var round=1; round<Nr; round++) {
state = SubBytes(state, Nb);
state = ShiftRows(state, Nb);
state = MixColumns(state, Nb);
state = AddRoundKey(state, w, round, Nb);
}
state = SubBytes(state, Nb);
state = ShiftRows(state, Nb);
state = AddRoundKey(state, w, Nr, Nb);
var output = new Array(4*Nb); // convert state to 1-d array before returning [§3.4]
for (var i=0; i<4*Nb; i++) output[i] = state[i%4][Math.floor(i/4)];
return output;
}
function SubBytes(s, Nb) { // apply SBox to state S [§5.1.1]
for (var r=0; r<4; r++) {
for (var c=0; c<Nb; c++) s[r][c] = Sbox[s[r][c]];
}
return s;
}
function ShiftRows(s, Nb) { // shift row r of state S left by r bytes [§5.1.2]
var t = new Array(4);
for (var r=1; r<4; r++) {
for (var c=0; c<4; c++) t[c] = s[r][(c+r)%Nb]; // shift into temp copy
for (var c=0; c<4; c++) s[r][c] = t[c]; // and copy back
} // note that this will work for Nb=4,5,6, but not 7,8 (always 4 for AES):
return s; // see fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.311.pdf
}
function MixColumns(s, Nb) { // combine bytes of each col of state S [§5.1.3]
for (var c=0; c<4; c++) {
var a = new Array(4); // 'a' is a copy of the current column from 's'
var b = new Array(4); // 'b' is a•{02} in GF(2^8)
for (var i=0; i<4; i++) {
a[i] = s[i][c];
b[i] = s[i][c]&0x80 ? s[i][c]<<1 ^ 0x011b : s[i][c]<<1;
}
// a[n] ^ b[n] is a•{03} in GF(2^8)
s[0][c] = b[0] ^ a[1] ^ b[1] ^ a[2] ^ a[3]; // 2*a0 + 3*a1 + a2 + a3
s[1][c] = a[0] ^ b[1] ^ a[2] ^ b[2] ^ a[3]; // a0 * 2*a1 + 3*a2 + a3
s[2][c] = a[0] ^ a[1] ^ b[2] ^ a[3] ^ b[3]; // a0 + a1 + 2*a2 + 3*a3
s[3][c] = a[0] ^ b[0] ^ a[1] ^ a[2] ^ b[3]; // 3*a0 + a1 + a2 + 2*a3
}
return s;
}
function AddRoundKey(state, w, rnd, Nb) { // xor Round Key into state S [§5.1.4]
for (var r=0; r<4; r++) {
for (var c=0; c<Nb; c++) state[r][c] ^= w[rnd*4+c][r];
}
return state;
}
function KeyExpansion(key) { // generate Key Schedule (byte-array Nr+1 x Nb) from Key [§5.2]
var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
var Nk = key.length/4 // key length (in words): 4/6/8 for 128/192/256-bit keys
var Nr = Nk + 6; // no of rounds: 10/12/14 for 128/192/256-bit keys
var w = new Array(Nb*(Nr+1));
var temp = new Array(4);
for (var i=0; i<Nk; i++) {
var r = [key[4*i], key[4*i+1], key[4*i+2], key[4*i+3]];
w[i] = r;
}
for (var i=Nk; i<(Nb*(Nr+1)); i++) {
w[i] = new Array(4);
for (var t=0; t<4; t++) temp[t] = w[i-1][t];
if (i % Nk == 0) {
temp = SubWord(RotWord(temp));
for (var t=0; t<4; t++) temp[t] ^= Rcon[i/Nk][t];
} else if (Nk > 6 && i%Nk == 4) {
temp = SubWord(temp);
}
for (var t=0; t<4; t++) w[i][t] = w[i-Nk][t] ^ temp[t];
}
return w;
}
function SubWord(w) { // apply SBox to 4-byte word w
for (var i=0; i<4; i++) w[i] = Sbox[w[i]];
return w;
}
function RotWord(w) { // rotate 4-byte word w left by one byte
w[4] = w[0];
for (var i=0; i<4; i++) w[i] = w[i+1];
return w;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/*
* Use AES to encrypt 'plaintext' with 'password' using 'nBits' key, in 'Counter' mode of operation
* - see http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
* for each block
* - outputblock = cipher(counter, key)
* - cipherblock = plaintext xor outputblock
*/
function AESEncryptCtr(plaintext, password, nBits) {
if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
// for this example script, generate the key by applying Cipher to 1st 16/24/32 chars of password;
// for real-world applications, a more secure approach would be to hash the password e.g. with SHA-1
var nBytes = nBits/8; // no bytes in key
var pwBytes = new Array(nBytes);
for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
var key = Cipher(pwBytes, KeyExpansion(pwBytes));
key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
// initialise counter block (NIST SP800-38A §B.2): millisecond time-stamp for nonce in 1st 8 bytes,
// block counter in 2nd 8 bytes
var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
var counterBlock = new Array(blockSize); // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
var nonce = (new Date()).getTime(); // milliseconds since 1-Jan-1970
// encode nonce in two stages to cater for JavaScript 32-bit limit on bitwise ops
for (var i=0; i<4; i++) counterBlock[i] = (nonce >>> i*8) & 0xff;
for (var i=0; i<4; i++) counterBlock[i+4] = (nonce/0x100000000 >>> i*8) & 0xff;
// generate key schedule - an expansion of the key into distinct Key Rounds for each round
var keySchedule = KeyExpansion(key);
var blockCount = Math.ceil(plaintext.length/blockSize);
var ciphertext = new Array(blockCount); // ciphertext as array of strings
for (var b=0; b<blockCount; b++) {
// set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
// again done in two stages for 32-bit ops
for (var c=0; c<4; c++) counterBlock[15-c] = (b >>> c*8) & 0xff;
for (var c=0; c<4; c++) counterBlock[15-c-4] = (b/0x100000000 >>> c*8)
var cipherCntr = Cipher(counterBlock, keySchedule); // -- encrypt counter block --
// calculate length of final block:
var blockLength = b<blockCount-1 ? blockSize : (plaintext.length-1)%blockSize+1;
var ct = '';
for (var i=0; i<blockLength; i++) { // -- xor plaintext with ciphered counter byte-by-byte --
var plaintextByte = plaintext.charCodeAt(b*blockSize+i);
var cipherByte = plaintextByte ^ cipherCntr[i];
ct += String.fromCharCode(cipherByte);
}
// ct is now ciphertext for this block
ciphertext[b] = escCtrlChars(ct); // escape troublesome characters in ciphertext
}
// convert the nonce to a string to go on the front of the ciphertext
var ctrTxt = '';
for (var i=0; i<8; i++) ctrTxt += String.fromCharCode(counterBlock[i]);
ctrTxt = escCtrlChars(ctrTxt);
// use '-' to separate blocks, use Array.join to concatenate arrays of strings for efficiency
return ctrTxt + '-' + ciphertext.join('-');
}
/*
* Use AES to decrypt 'ciphertext' with 'password' using 'nBits' key, in Counter mode of operation
*
* for each block
* - outputblock = cipher(counter, key)
* - cipherblock = plaintext xor outputblock
*/
function AESDecryptCtr(ciphertext, password, nBits) {
if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
var nBytes = nBits/8; // no bytes in key
var pwBytes = new Array(nBytes);
for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
var pwKeySchedule = KeyExpansion(pwBytes);
var key = Cipher(pwBytes, pwKeySchedule);
key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
var keySchedule = KeyExpansion(key);
ciphertext = ciphertext.split('-'); // split ciphertext into array of block-length strings
// recover nonce from 1st element of ciphertext
var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
var counterBlock = new Array(blockSize);
var ctrTxt = unescCtrlChars(ciphertext[0]);
for (var i=0; i<8; i++) counterBlock[i] = ctrTxt.charCodeAt(i);
var plaintext = new Array(ciphertext.length-1);
for (var b=1; b<ciphertext.length; b++) {
// set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
for (var c=0; c<4; c++) counterBlock[15-c] = ((b-1) >>> c*8) & 0xff;
for (var c=0; c<4; c++) counterBlock[15-c-4] = ((b/0x100000000-1) >>> c*8) & 0xff;
var cipherCntr = Cipher(counterBlock, keySchedule); // encrypt counter block
ciphertext[b] = unescCtrlChars(ciphertext[b]);
var pt = '';
for (var i=0; i<ciphertext[b].length; i++) {
// -- xor plaintext with ciphered counter byte-by-byte --
var ciphertextByte = ciphertext[b].charCodeAt(i);
var plaintextByte = ciphertextByte ^ cipherCntr[i];
pt += String.fromCharCode(plaintextByte);
}
// pt is now plaintext for this block
plaintext[b-1] = pt; // b-1 'cos no initial nonce block in plaintext
}
return plaintext.join('');
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
function escCtrlChars(str) { // escape control chars which might cause problems handling ciphertext
return str.replace(/[\0\t\n\v\f\r\xa0!-]/g, function(c) { return '!' + c.charCodeAt(0) + '!'; });
} // \xa0 to cater for bug in Firefox; include '-' to leave it free for use as a block marker
function unescCtrlChars(str) { // unescape potentially problematic control characters
return str.replace(/!\d\d?\d?!/g, function(c) { return String.fromCharCode(c.slice(1,-1)); });
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
function encrypt(plaintext, password){
return AESEncryptCtr(plaintext, password, 256);
}
function decrypt(ciphertext, password){
return AESDecryptCtr(ciphertext, password, 256);
}
/* End AES Implementation */
var cmd = msg.substr(0,4);
var arg = msg.substr(5);
if(cmd == "encr"){
arg = eval("(" + arg + ")");
var plaintext = arg.plaintext;
var password = arg.password;
var results = encrypt(plaintext, password);
gearsWorkerPool.sendMessage(String(results), sender);
}else if(cmd == "decr"){
arg = eval("(" + arg + ")");
var ciphertext = arg.ciphertext;
var password = arg.password;
var results = decrypt(ciphertext, password);
gearsWorkerPool.sendMessage(String(results), sender);
}
}
});
}
if(!dojo._hasResource["dojox._sql.common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox._sql.common"] = true;
dojo.provide("dojox._sql.common");
// summary:
// Executes a SQL expression.
// description:
// There are four ways to call this:
// 1) Straight SQL: dojox.sql("SELECT * FROM FOOBAR");
// 2) SQL with parameters: dojox.sql("INSERT INTO FOOBAR VALUES (?)", someParam)
// 3) Encrypting particular values:
// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?))", someParam, "somePassword", callback)
// 4) Decrypting particular values:
// dojox.sql("SELECT DECRYPT(SOMECOL1), DECRYPT(SOMECOL2) FROM
// FOOBAR WHERE SOMECOL3 = ?", someParam,
// "somePassword", callback)
//
// For encryption and decryption the last two values should be the the password for
// encryption/decryption, and the callback function that gets the result set.
//
// Note: We only support ENCRYPT(?) statements, and
// and DECRYPT(*) statements for now -- you can not have a literal string
// inside of these, such as ENCRYPT('foobar')
//
// Note: If you have multiple columns to encrypt and decrypt, you can use the following
// convenience form to not have to type ENCRYPT(?)/DECRYPT(*) many times:
//
// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?, ?, ?))",
// someParam1, someParam2, someParam3,
// "somePassword", callback)
//
// dojox.sql("SELECT DECRYPT(SOMECOL1, SOMECOL2) FROM
// FOOBAR WHERE SOMECOL3 = ?", someParam,
// "somePassword", callback)
dojox.sql = new Function("return dojox.sql._exec(arguments);");
dojo.mixin(dojox.sql, {
dbName: null,
// summary:
// If true, then we print out any SQL that is executed
// to the debug window
debug: (dojo.exists("dojox.sql.debug")?dojox.sql.debug:false),
open: function(dbName){
if(this._dbOpen && (!dbName || dbName == this.dbName)){
return;
}
if(!this.dbName){
this.dbName = "dot_store_"
+ window.location.href.replace(/[^0-9A-Za-z_]/g, "_");
//console.debug("Using Google Gears database " + this.dbName);
}
if(!dbName){
dbName = this.dbName;
}
try{
this._initDb();
this.db.open(dbName);
this._dbOpen = true;
}catch(exp){
throw exp.message||exp;
}
},
close: function(dbName){
// on Internet Explorer, Google Gears throws an exception
// "Object not a collection", when we try to close the
// database -- just don't close it on this platform
// since we are running into a Gears bug; the Gears team
// said it's ok to not close a database connection
if(dojo.isIE){ return; }
if(!this._dbOpen && (!dbName || dbName == this.dbName)){
return;
}
if(!dbName){
dbName = this.dbName;
}
try{
this.db.close(dbName);
this._dbOpen = false;
}catch(exp){
throw exp.message||exp;
}
},
_exec: function(params){
try{
// get the Gears Database object
this._initDb();
// see if we need to open the db; if programmer
// manually called dojox.sql.open() let them handle
// it; otherwise we open and close automatically on
// each SQL execution
if(!this._dbOpen){
this.open();
this._autoClose = true;
}
// determine our parameters
var sql = null;
var callback = null;
var password = null;
var args = dojo._toArray(params);
sql = args.splice(0, 1)[0];
// does this SQL statement use the ENCRYPT or DECRYPT
// keywords? if so, extract our callback and crypto
// password
if(this._needsEncrypt(sql) || this._needsDecrypt(sql)){
callback = args.splice(args.length - 1, 1)[0];
password = args.splice(args.length - 1, 1)[0];
}
// 'args' now just has the SQL parameters
// print out debug SQL output if the developer wants that
if(this.debug){
this._printDebugSQL(sql, args);
}
// handle SQL that needs encryption/decryption differently
// do we have an ENCRYPT SQL statement? if so, handle that first
if(this._needsEncrypt(sql)){
var crypto = new dojox.sql._SQLCrypto("encrypt", sql,
password, args,
callback);
return; // encrypted results will arrive asynchronously
}else if(this._needsDecrypt(sql)){ // otherwise we have a DECRYPT statement
var crypto = new dojox.sql._SQLCrypto("decrypt", sql,
password, args,
callback);
return; // decrypted results will arrive asynchronously
}
// execute the SQL and get the results
var rs = this.db.execute(sql, args);
// Gears ResultSet object's are ugly -- normalize
// these into something JavaScript programmers know
// how to work with, basically an array of
// JavaScript objects where each property name is
// simply the field name for a column of data
rs = this._normalizeResults(rs);
if(this._autoClose){
this.close();
}
return rs;
}catch(exp){
exp = exp.message||exp;
console.debug("SQL Exception: " + exp);
if(this._autoClose){
try{
this.close();
}catch(e){
console.debug("Error closing database: "
+ e.message||e);
}
}
throw exp;
}
},
_initDb: function(){
if(!this.db){
try{
this.db = google.gears.factory.create('beta.database', '1.0');
}catch(exp){
dojo.setObject("google.gears.denied", true);
dojox.off.onFrameworkEvent("coreOperationFailed");
throw "Google Gears must be allowed to run";
}
}
},
_printDebugSQL: function(sql, args){
var msg = "dojox.sql(\"" + sql + "\"";
for(var i = 0; i < args.length; i++){
if(typeof args[i] == "string"){
msg += ", \"" + args[i] + "\"";
}else{
msg += ", " + args[i];
}
}
msg += ")";
console.debug(msg);
},
_normalizeResults: function(rs){
var results = [];
if(!rs){ return []; }
while(rs.isValidRow()){
var row = {};
for(var i = 0; i < rs.fieldCount(); i++){
var fieldName = rs.fieldName(i);
var fieldValue = rs.field(i);
row[fieldName] = fieldValue;
}
results.push(row);
rs.next();
}
rs.close();
return results;
},
_needsEncrypt: function(sql){
return /encrypt\([^\)]*\)/i.test(sql);
},
_needsDecrypt: function(sql){
return /decrypt\([^\)]*\)/i.test(sql);
}
});
// summary:
// A private class encapsulating any cryptography that must be done
// on a SQL statement. We instantiate this class and have it hold
// it's state so that we can potentially have several encryption
// operations happening at the same time by different SQL statements.
dojo.declare("dojox.sql._SQLCrypto", null, {
constructor: function(action, sql, password, args, callback){
if(action == "encrypt"){
this._execEncryptSQL(sql, password, args, callback);
}else{
this._execDecryptSQL(sql, password, args, callback);
}
},
_execEncryptSQL: function(sql, password, args, callback){
// strip the ENCRYPT/DECRYPT keywords from the SQL
var strippedSQL = this._stripCryptoSQL(sql);
// determine what arguments need encryption
var encryptColumns = this._flagEncryptedArgs(sql, args);
// asynchronously encrypt each argument that needs it
var self = this;
this._encrypt(strippedSQL, password, args, encryptColumns, function(finalArgs){
// execute the SQL
var error = false;
var resultSet = [];
var exp = null;
try{
resultSet = dojox.sql.db.execute(strippedSQL, finalArgs);
}catch(execError){
error = true;
exp = execError.message||execError;
}
// was there an error during SQL execution?
if(exp != null){
if(dojox.sql._autoClose){
try{ dojox.sql.close(); }catch(e){}
}
callback(null, true, exp.toString());
return;
}
// normalize SQL results into a JavaScript object
// we can work with
resultSet = dojox.sql._normalizeResults(resultSet);
if(dojox.sql._autoClose){
dojox.sql.close();
}
// are any decryptions necessary on the result set?
if(dojox.sql._needsDecrypt(sql)){
// determine which of the result set columns needs decryption
var needsDecrypt = self._determineDecryptedColumns(sql);
// now decrypt columns asynchronously
// decrypt columns that need it
self._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
callback(finalResultSet, false, null);
});
}else{
callback(resultSet, false, null);
}
});
},
_execDecryptSQL: function(sql, password, args, callback){
// strip the ENCRYPT/DECRYPT keywords from the SQL
var strippedSQL = this._stripCryptoSQL(sql);
// determine which columns needs decryption; this either
// returns the value *, which means all result set columns will
// be decrypted, or it will return the column names that need
// decryption set on a hashtable so we can quickly test a given
// column name; the key is the column name that needs
// decryption and the value is 'true' (i.e. needsDecrypt["someColumn"]
// would return 'true' if it needs decryption, and would be 'undefined'
// or false otherwise)
var needsDecrypt = this._determineDecryptedColumns(sql);
// execute the SQL
var error = false;
var resultSet = [];
var exp = null;
try{
resultSet = dojox.sql.db.execute(strippedSQL, args);
}catch(execError){
error = true;
exp = execError.message||execError;
}
// was there an error during SQL execution?
if(exp != null){
if(dojox.sql._autoClose){
try{ dojox.sql.close(); }catch(e){}
}
callback(resultSet, true, exp.toString());
return;
}
// normalize SQL results into a JavaScript object
// we can work with
resultSet = dojox.sql._normalizeResults(resultSet);
if(dojox.sql._autoClose){
dojox.sql.close();
}
// decrypt columns that need it
this._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
callback(finalResultSet, false, null);
});
},
_encrypt: function(sql, password, args, encryptColumns, callback){
//console.debug("_encrypt, sql="+sql+", password="+password+", encryptColumns="+encryptColumns+", args="+args);
this._totalCrypto = 0;
this._finishedCrypto = 0;
this._finishedSpawningCrypto = false;
this._finalArgs = args;
for(var i = 0; i < args.length; i++){
if(encryptColumns[i]){
// we have an encrypt() keyword -- get just the value inside
// the encrypt() parantheses -- for now this must be a ?
var sqlParam = args[i];
var paramIndex = i;
// update the total number of encryptions we know must be done asynchronously
this._totalCrypto++;
// FIXME: This currently uses DES as a proof-of-concept since the
// DES code used is quite fast and was easy to work with. Modify dojox.sql
// to be able to specify a different encryption provider through a
// a SQL-like syntax, such as dojox.sql("SET ENCRYPTION BLOWFISH"),
// and modify the dojox.crypto.Blowfish code to be able to work using
// a Google Gears Worker Pool
// do the actual encryption now, asychronously on a Gears worker thread
dojox._sql._crypto.encrypt(sqlParam, password, dojo.hitch(this, function(results){
// set the new encrypted value
this._finalArgs[paramIndex] = results;
this._finishedCrypto++;
// are we done with all encryption?
if(this._finishedCrypto >= this._totalCrypto
&& this._finishedSpawningCrypto){
callback(this._finalArgs);
}
}));
}
}
this._finishedSpawningCrypto = true;
},
_decrypt: function(resultSet, needsDecrypt, password, callback){
//console.debug("decrypt, resultSet="+resultSet+", needsDecrypt="+needsDecrypt+", password="+password);
this._totalCrypto = 0;
this._finishedCrypto = 0;
this._finishedSpawningCrypto = false;
this._finalResultSet = resultSet;
for(var i = 0; i < resultSet.length; i++){
var row = resultSet[i];
// go through each of the column names in row,
// seeing if they need decryption
for(var columnName in row){
if(needsDecrypt == "*" || needsDecrypt[columnName]){
this._totalCrypto++;
var columnValue = row[columnName];
// forming a closure here can cause issues, with values not cleanly
// saved on Firefox/Mac OS X for some of the values above that
// are needed in the callback below; call a subroutine that will form
// a closure inside of itself instead
this._decryptSingleColumn(columnName, columnValue, password, i,
function(finalResultSet){
callback(finalResultSet);
});
}
}
}
this._finishedSpawningCrypto = true;
},
_stripCryptoSQL: function(sql){
// replace all DECRYPT(*) occurrences with a *
sql = sql.replace(/DECRYPT\(\*\)/ig, "*");
// match any ENCRYPT(?, ?, ?, etc) occurrences,
// then replace with just the question marks in the
// middle
var matches = sql.match(/ENCRYPT\([^\)]*\)/ig);
if(matches != null){
for(var i = 0; i < matches.length; i++){
var encryptStatement = matches[i];
var encryptValue = encryptStatement.match(/ENCRYPT\(([^\)]*)\)/i)[1];
sql = sql.replace(encryptStatement, encryptValue);
}
}
// match any DECRYPT(COL1, COL2, etc) occurrences,
// then replace with just the column names
// in the middle
matches = sql.match(/DECRYPT\([^\)]*\)/ig);
if(matches != null){
for(var i = 0; i < matches.length; i++){
var decryptStatement = matches[i];
var decryptValue = decryptStatement.match(/DECRYPT\(([^\)]*)\)/i)[1];
sql = sql.replace(decryptStatement, decryptValue);
}
}
return sql;
},
_flagEncryptedArgs: function(sql, args){
// capture literal strings that have question marks in them,
// and also capture question marks that stand alone
var tester = new RegExp(/([\"][^\"]*\?[^\"]*[\"])|([\'][^\']*\?[^\']*[\'])|(\?)/ig);
var matches;
var currentParam = 0;
var results = [];
while((matches = tester.exec(sql)) != null){
var currentMatch = RegExp.lastMatch+"";
// are we a literal string? then ignore it
if(/^[\"\']/.test(currentMatch)){
continue;
}
// do we have an encrypt keyword to our left?
var needsEncrypt = false;
if(/ENCRYPT\([^\)]*$/i.test(RegExp.leftContext)){
needsEncrypt = true;
}
// set the encrypted flag
results[currentParam] = needsEncrypt;
currentParam++;
}
return results;
},
_determineDecryptedColumns: function(sql){
var results = {};
if(/DECRYPT\(\*\)/i.test(sql)){
results = "*";
}else{
var tester = /DECRYPT\((?:\s*\w*\s*\,?)*\)/ig;
var matches;
while(matches = tester.exec(sql)){
var lastMatch = new String(RegExp.lastMatch);
var columnNames = lastMatch.replace(/DECRYPT\(/i, "");
columnNames = columnNames.replace(/\)/, "");
columnNames = columnNames.split(/\s*,\s*/);
dojo.forEach(columnNames, function(column){
if(/\s*\w* AS (\w*)/i.test(column)){
column = column.match(/\s*\w* AS (\w*)/i)[1];
}
results[column] = true;
});
}
}
return results;
},
_decryptSingleColumn: function(columnName, columnValue, password, currentRowIndex,
callback){
//console.debug("decryptSingleColumn, columnName="+columnName+", columnValue="+columnValue+", currentRowIndex="+currentRowIndex)
dojox._sql._crypto.decrypt(columnValue, password, dojo.hitch(this, function(results){
// set the new decrypted value
this._finalResultSet[currentRowIndex][columnName] = results;
this._finishedCrypto++;
// are we done with all encryption?
if(this._finishedCrypto >= this._totalCrypto
&& this._finishedSpawningCrypto){
//console.debug("done with all decrypts");
callback(this._finalResultSet);
}
}));
}
});
}
if(!dojo._hasResource["dojox.sql"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.sql"] = true;
dojo.provide("dojox.sql");
}
if(!dojo._hasResource["dojox.storage.GearsStorageProvider"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.storage.GearsStorageProvider"] = true;
dojo.provide("dojox.storage.GearsStorageProvider");
if(dojo.isGears){
(function(){
// make sure we don't define the gears provider if we're not gears
// enabled
dojo.declare("dojox.storage.GearsStorageProvider", dojox.storage.Provider, {
// summary:
// Storage provider that uses the features of Google Gears
// to store data (it is saved into the local SQL database
// provided by Gears, using dojox.sql)
// description:
//
//
// You can disable this storage provider with the following djConfig
// variable:
// var djConfig = { disableGearsStorage: true };
//
// Authors of this storage provider-
// Brad Neuberg, bkn3@columbia.edu
constructor: function(){
},
// instance methods and properties
TABLE_NAME: "__DOJO_STORAGE",
initialized: false,
_available: null,
initialize: function(){
//console.debug("dojox.storage.GearsStorageProvider.initialize");
if(djConfig["disableGearsStorage"] == true){
return;
}
// partition our storage data so that multiple apps
// on the same host won't collide
this.TABLE_NAME = "__DOJO_STORAGE";
// create the table that holds our data
try{
dojox.sql("CREATE TABLE IF NOT EXISTS " + this.TABLE_NAME + "( "
+ " namespace TEXT, "
+ " key TEXT, "
+ " value TEXT "
+ ")"
);
dojox.sql("CREATE UNIQUE INDEX IF NOT EXISTS namespace_key_index"
+ " ON " + this.TABLE_NAME
+ " (namespace, key)");
}catch(e){
console.debug("dojox.storage.GearsStorageProvider.initialize:", e);
this.initialized = false; // we were unable to initialize
dojox.storage.manager.loaded();
return;
}
// indicate that this storage provider is now loaded
this.initialized = true;
dojox.storage.manager.loaded();
},
isAvailable: function(){
// is Google Gears available and defined?
return this._available = dojo.isGears;
},
put: function(key, value, resultsHandler, namespace){
if(this.isValidKey(key) == false){
throw new Error("Invalid key given: " + key);
}
namespace = namespace||this.DEFAULT_NAMESPACE;
// serialize the value;
// handle strings differently so they have better performance
if(dojo.isString(value)){
value = "string:" + value;
}else{
value = dojo.toJson(value);
}
// try to store the value
try{
dojox.sql("DELETE FROM " + this.TABLE_NAME
+ " WHERE namespace = ? AND key = ?",
namespace, key);
dojox.sql("INSERT INTO " + this.TABLE_NAME
+ " VALUES (?, ?, ?)",
namespace, key, value);
}catch(e){
// indicate we failed
console.debug("dojox.storage.GearsStorageProvider.put:", e);
resultsHandler(this.FAILED, key, e.toString());
return;
}
if(resultsHandler){
resultsHandler(dojox.storage.SUCCESS, key, null);
}
},
get: function(key, namespace){
if(this.isValidKey(key) == false){
throw new Error("Invalid key given: " + key);
}
namespace = namespace||this.DEFAULT_NAMESPACE;
// try to find this key in the database
var results = dojox.sql("SELECT * FROM " + this.TABLE_NAME
+ " WHERE namespace = ? AND "
+ " key = ?",
namespace, key);
if(!results.length){
return null;
}else{
results = results[0].value;
}
// destringify the content back into a
// real JavaScript object;
// handle strings differently so they have better performance
if(dojo.isString(results) && (/^string:/.test(results))){
results = results.substring("string:".length);
}else{
results = dojo.fromJson(results);
}
return results;
},
getNamespaces: function(){
var results = [ dojox.storage.DEFAULT_NAMESPACE ];
var rs = dojox.sql("SELECT namespace FROM " + this.TABLE_NAME
+ " DESC GROUP BY namespace");
for(var i = 0; i < rs.length; i++){
if(rs[i].namespace != dojox.storage.DEFAULT_NAMESPACE){
results.push(rs[i].namespace);
}
}
return results;
},
getKeys: function(namespace){
namespace = namespace||this.DEFAULT_NAMESPACE;
if(this.isValidKey(namespace) == false){
throw new Error("Invalid namespace given: " + namespace);
}
var rs = dojox.sql("SELECT key FROM " + this.TABLE_NAME
+ " WHERE namespace = ?",
namespace);
var results = [];
for(var i = 0; i < rs.length; i++){
results.push(rs[i].key);
}
return results;
},
clear: function(namespace){
if(this.isValidKey(namespace) == false){
throw new Error("Invalid namespace given: " + namespace);
}
namespace = namespace||this.DEFAULT_NAMESPACE;
dojox.sql("DELETE FROM " + this.TABLE_NAME
+ " WHERE namespace = ?",
namespace);
},
remove: function(key, namespace){
namespace = namespace||this.DEFAULT_NAMESPACE;
dojox.sql("DELETE FROM " + this.TABLE_NAME
+ " WHERE namespace = ? AND"
+ " key = ?",
namespace,
key);
},
putMultiple: function(keys, values, resultsHandler, namespace) {
if(this.isValidKeyArray(keys) === false
|| ! values instanceof Array
|| keys.length != values.length){
throw new Error("Invalid arguments: keys = ["
+ keys + "], values = [" + values + "]");
}
if(namespace == null || typeof namespace == "undefined"){
namespace = dojox.storage.DEFAULT_NAMESPACE;
}
if(this.isValidKey(namespace) == false){
throw new Error("Invalid namespace given: " + namespace);
}
this._statusHandler = resultsHandler;
// try to store the value
try{
dojox.sql.open();
dojox.sql.db.execute("BEGIN TRANSACTION");
var _stmt = "REPLACE INTO " + this.TABLE_NAME + " VALUES (?, ?, ?)";
for(var i=0;i<keys.length;i++) {
// serialize the value;
// handle strings differently so they have better performance
var value = values[i];
if(dojo.isString(value)){
value = "string:" + value;
}else{
value = dojo.toJson(value);
}
dojox.sql.db.execute( _stmt,
[namespace, keys[i], value]);
}
dojox.sql.db.execute("COMMIT TRANSACTION");
dojox.sql.close();
}catch(e){
// indicate we failed
console.debug("dojox.storage.GearsStorageProvider.putMultiple:", e);
if(resultsHandler){
resultsHandler(this.FAILED, keys, e.toString());
}
return;
}
if(resultsHandler){
resultsHandler(dojox.storage.SUCCESS, key, null);
}
},
getMultiple: function(keys, namespace){
// TODO: Maybe use SELECT IN instead
if(this.isValidKeyArray(keys) === false){
throw new ("Invalid key array given: " + keys);
}
if(namespace == null || typeof namespace == "undefined"){
namespace = dojox.storage.DEFAULT_NAMESPACE;
}
if(this.isValidKey(namespace) == false){
throw new Error("Invalid namespace given: " + namespace);
}
var _stmt = "SELECT * FROM " + this.TABLE_NAME +
" WHERE namespace = ? AND " + " key = ?";
var results = [];
for(var i=0;i<keys.length;i++){
var result = dojox.sql( _stmt, namespace, keys[i]);
if( ! result.length){
results[i] = null;
}else{
result = result[0].value;
// destringify the content back into a
// real JavaScript object;
// handle strings differently so they have better performance
if(dojo.isString(result) && (/^string:/.test(result))){
results[i] = result.substring("string:".length);
}else{
results[i] = dojo.fromJson(result);
}
}
}
return results;
},
removeMultiple: function(keys, namespace){
namespace = namespace||this.DEFAULT_NAMESPACE;
dojox.sql.open();
dojox.sql.db.execute("BEGIN TRANSACTION");
var _stmt = "DELETE FROM " + this.TABLE_NAME + " WHERE namespace = ? AND key = ?";
for(var i=0;i<keys.length;i++){
dojox.sql.db.execute( _stmt,
[namespace, keys[i]]);
}
dojox.sql.db.execute("COMMIT TRANSACTION");
dojox.sql.close();
},
isPermanent: function(){ return true; },
getMaximumSize: function(){ return this.SIZE_NO_LIMIT; },
hasSettingsUI: function(){ return false; },
showSettingsUI: function(){
throw new Error(this.declaredClass
+ " does not support a storage settings user-interface");
},
hideSettingsUI: function(){
throw new Error(this.declaredClass
+ " does not support a storage settings user-interface");
}
});
// register the existence of our storage providers
dojox.storage.manager.register("dojox.storage.GearsStorageProvider",
new dojox.storage.GearsStorageProvider());
dojox.storage.manager.initialize();
})();
}
}
if(!dojo._hasResource["dojox.storage._common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.storage._common"] = true;
dojo.provide("dojox.storage._common");
// FIXME: Find way to set isGears from offline.profile.js file; it didn't
// work for me
//dojo.requireIf(!dojo.isGears, "dojox.storage.FlashStorageProvider");
//dojo.requireIf(!dojo.isGears, "dojox.storage.WhatWGStorageProvider");
// now that we are loaded and registered tell the storage manager to
// initialize itself
dojox.storage.manager.initialize();
}
if(!dojo._hasResource["dojox.storage"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.storage"] = true;
dojo.provide("dojox.storage");
}
if(!dojo._hasResource["dojox.off.files"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off.files"] = true;
dojo.provide("dojox.off.files");
// Author: Brad Neuberg, bkn3@columbia.edu, http://codinginparadise.org
// summary:
// Helps maintain resources that should be
// available offline, such as CSS files.
// description:
// dojox.off.files makes it easy to indicate
// what resources should be available offline,
// such as CSS files, JavaScript, HTML, etc.
dojox.off.files = {
// versionURL: String
// An optional file, that if present, records the version
// of our bundle of files to make available offline. If this
// file is present, and we are not currently debugging,
// then we only refresh our offline files if the version has
// changed.
versionURL: "version.js",
// listOfURLs: Array
// For advanced usage; most developers can ignore this.
// Our list of URLs that will be cached and made available
// offline.
listOfURLs: [],
// refreshing: boolean
// For advanced usage; most developers can ignore this.
// Whether we are currently in the middle
// of refreshing our list of offline files.
refreshing: false,
_cancelID: null,
_error: false,
_errorMessages: [],
_currentFileIndex: 0,
_store: null,
_doSlurp: false,
slurp: function(){
// summary:
// Autoscans the page to find all resources to
// cache. This includes scripts, images, CSS, and hyperlinks
// to pages that are in the same scheme/port/host as this
// page. We also scan the embedded CSS of any stylesheets
// to find @import statements and url()'s.
// You should call this method from the top-level, outside of
// any functions and before the page loads:
//
// <script>
//
//
//
//
//
// // configure how we should work offline
//
// // set our application name
// dojox.off.ui.appName = "Moxie";
//
// // automatically "slurp" the page and
// // capture the resources we need offline
// dojox.off.files.slurp();
//
// // tell Dojo Offline we are ready for it to initialize itself now
// // that we have finished configuring it for our application
// dojox.off.initialize();
// </script>
//
// Note that inline styles on elements are not handled (i.e.
// if you somehow have an inline style that uses a URL);
// object and embed tags are not scanned since their format
// differs based on type; and elements created by JavaScript
// after page load are not found. For these you must manually
// add them with a dojox.off.files.cache() method call.
// just schedule the slurp once the page is loaded and
// Dojo Offline is ready to slurp; dojox.off will call
// our _slurp() method before indicating it is finished
// loading
this._doSlurp = true;
},
cache: function(urlOrList){ /* void */
// summary:
// Caches a file or list of files to be available offline. This
// can either be a full URL, such as http://foobar.com/index.html,
// or a relative URL, such as ../index.html. This URL is not
// actually cached until dojox.off.sync.synchronize() is called.
// urlOrList: String or Array[]
// A URL of a file to cache or an Array of Strings of files to
// cache
//console.debug("dojox.off.files.cache, urlOrList="+urlOrList);
if(dojo.isString(urlOrList)){
var url = this._trimAnchor(urlOrList+"");
if(!this.isAvailable(url)){
this.listOfURLs.push(url);
}
}else if(urlOrList instanceof dojo._Url){
var url = this._trimAnchor(urlOrList.uri);
if(!this.isAvailable(url)){
this.listOfURLs.push(url);
}
}else{
dojo.forEach(urlOrList, function(url){
url = this._trimAnchor(url);
if(!this.isAvailable(url)){
this.listOfURLs.push(url);
}
}, this);
}
},
printURLs: function(){
// summary:
// A helper function that will dump and print out
// all of the URLs that are cached for offline
// availability. This can help with debugging if you
// are trying to make sure that all of your URLs are
// available offline
console.debug("The following URLs are cached for offline use:");
dojo.forEach(this.listOfURLs, function(i){
console.debug(i);
});
},
remove: function(url){ /* void */
// summary:
// Removes a URL from the list of files to cache.
// description:
// Removes a URL from the list of URLs to cache. Note that this
// does not actually remove the file from the offline cache;
// instead, it just prevents us from refreshing this file at a
// later time, so that it will naturally time out and be removed
// from the offline cache
// url: String
// The URL to remove
for(var i = 0; i < this.listOfURLs.length; i++){
if(this.listOfURLs[i] == url){
this.listOfURLs = this.listOfURLs.splice(i, 1);
break;
}
}
},
isAvailable: function(url){ /* boolean */
// summary:
// Determines whether the given resource is available offline.
// url: String
// The URL to check
for(var i = 0; i < this.listOfURLs.length; i++){
if(this.listOfURLs[i] == url){
return true;
}
}
return false;
},
refresh: function(callback){ /* void */
//console.debug("dojox.off.files.refresh");
// summary:
// For advanced usage; most developers can ignore this.
// Refreshes our list of offline resources,
// making them available offline.
// callback: Function
// A callback that receives two arguments: whether an error
// occurred, which is a boolean; and an array of error message strings
// with details on errors encountered. If no error occured then message is
// empty array with length 0.
try{
if(djConfig.isDebug){
this.printURLs();
}
this.refreshing = true;
if(this.versionURL){
this._getVersionInfo(function(oldVersion, newVersion, justDebugged){
//console.warn("getVersionInfo, oldVersion="+oldVersion+", newVersion="+newVersion
// + ", justDebugged="+justDebugged+", isDebug="+djConfig.isDebug);
if(djConfig.isDebug || !newVersion || justDebugged
|| !oldVersion || oldVersion != newVersion){
console.warn("Refreshing offline file list");
this._doRefresh(callback, newVersion);
}else{
console.warn("No need to refresh offline file list");
callback(false, []);
}
});
}else{
console.warn("Refreshing offline file list");
this._doRefresh(callback);
}
}catch(e){
this.refreshing = false;
// can't refresh files -- core operation --
// fail fast
dojox.off.coreOpFailed = true;
dojox.off.enabled = false;
dojox.off.onFrameworkEvent("coreOperationFailed");
}
},
abortRefresh: function(){
// summary:
// For advanced usage; most developers can ignore this.
// Aborts and cancels a refresh.
if(!this.refreshing){
return;
}
this._store.abortCapture(this._cancelID);
this.refreshing = false;
},
_slurp: function(){
if(!this._doSlurp){
return;
}
var handleUrl = dojo.hitch(this, function(url){
if(this._sameLocation(url)){
this.cache(url);
}
});
handleUrl(window.location.href);
dojo.query("script").forEach(function(i){
try{
handleUrl(i.getAttribute("src"));
}catch(exp){
//console.debug("dojox.off.files.slurp 'script' error: "
// + exp.message||exp);
}
});
dojo.query("link").forEach(function(i){
try{
if(!i.getAttribute("rel")
|| i.getAttribute("rel").toLowerCase() != "stylesheet"){
return;
}
handleUrl(i.getAttribute("href"));
}catch(exp){
//console.debug("dojox.off.files.slurp 'link' error: "
// + exp.message||exp);
}
});
dojo.query("img").forEach(function(i){
try{
handleUrl(i.getAttribute("src"));
}catch(exp){
//console.debug("dojox.off.files.slurp 'img' error: "
// + exp.message||exp);
}
});
dojo.query("a").forEach(function(i){
try{
handleUrl(i.getAttribute("href"));
}catch(exp){
//console.debug("dojox.off.files.slurp 'a' error: "
// + exp.message||exp);
}
});
// FIXME: handle 'object' and 'embed' tag
// parse our style sheets for inline URLs and imports
dojo.forEach(document.styleSheets, function(sheet){
try{
if(sheet.cssRules){ // Firefox
dojo.forEach(sheet.cssRules, function(rule){
var text = rule.cssText;
if(text){
var matches = text.match(/url\(\s*([^\) ]*)\s*\)/i);
if(!matches){
return;
}
for(var i = 1; i < matches.length; i++){
handleUrl(matches[i])
}
}
});
}else if(sheet.cssText){ // IE
var matches;
var text = sheet.cssText.toString();
// unfortunately, using RegExp.exec seems to be flakey
// for looping across multiple lines on IE using the
// global flag, so we have to simulate it
var lines = text.split(/\f|\r|\n/);
for(var i = 0; i < lines.length; i++){
matches = lines[i].match(/url\(\s*([^\) ]*)\s*\)/i);
if(matches && matches.length){
handleUrl(matches[1]);
}
}
}
}catch(exp){
//console.debug("dojox.off.files.slurp stylesheet parse error: "
// + exp.message||exp);
}
});
//this.printURLs();
},
_sameLocation: function(url){
if(!url){ return false; }
// filter out anchors
if(url.length && url.charAt(0) == "#"){
return false;
}
// FIXME: dojo._Url should be made public;
// it's functionality is very useful for
// parsing URLs correctly, which is hard to
// do right
url = new dojo._Url(url);
// totally relative -- ../../someFile.html
if(!url.scheme && !url.port && !url.host){
return true;
}
// scheme relative with port specified -- brad.com:8080
if(!url.scheme && url.host && url.port
&& window.location.hostname == url.host
&& window.location.port == url.port){
return true;
}
// scheme relative with no-port specified -- brad.com
if(!url.scheme && url.host && !url.port
&& window.location.hostname == url.host
&& window.location.port == 80){
return true;
}
// else we have everything
return window.location.protocol == (url.scheme + ":")
&& window.location.hostname == url.host
&& (window.location.port == url.port || !window.location.port && !url.port);
},
_trimAnchor: function(url){
return url.replace(/\#.*$/, "");
},
_doRefresh: function(callback, newVersion){
// get our local server
var localServer;
try{
localServer = google.gears.factory.create("beta.localserver", "1.0");
}catch(exp){
dojo.setObject("google.gears.denied", true);
dojox.off.onFrameworkEvent("coreOperationFailed");
throw "Google Gears must be allowed to run";
}
var storeName = "dot_store_"
+ window.location.href.replace(/[^0-9A-Za-z_]/g, "_");
// refresh everything by simply removing
// any older stores
localServer.removeStore(storeName);
// open/create the resource store
localServer.openStore(storeName);
var store = localServer.createStore(storeName);
this._store = store;
// add our list of files to capture
var self = this;
this._currentFileIndex = 0;
this._cancelID = store.capture(this.listOfURLs, function(url, success, captureId){
//console.debug("store.capture, url="+url+", success="+success);
if(!success && self.refreshing){
self._cancelID = null;
self.refreshing = false;
var errorMsgs = [];
errorMsgs.push("Unable to capture: " + url);
callback(true, errorMsgs);
return;
}else if(success){
self._currentFileIndex++;
}
if(success && self._currentFileIndex >= self.listOfURLs.length){
self._cancelID = null;
self.refreshing = false;
if(newVersion){
dojox.storage.put("oldVersion", newVersion, null,
dojox.off.STORAGE_NAMESPACE);
}
dojox.storage.put("justDebugged", djConfig.isDebug, null,
dojox.off.STORAGE_NAMESPACE);
callback(false, []);
}
});
},
_getVersionInfo: function(callback){
var justDebugged = dojox.storage.get("justDebugged",
dojox.off.STORAGE_NAMESPACE);
var oldVersion = dojox.storage.get("oldVersion",
dojox.off.STORAGE_NAMESPACE);
var newVersion = null;
callback = dojo.hitch(this, callback);
dojo.xhrGet({
url: this.versionURL + "?browserbust=" + new Date().getTime(),
timeout: 5 * 1000,
handleAs: "javascript",
error: function(err){
//console.warn("dojox.off.files._getVersionInfo, err=",err);
dojox.storage.remove("oldVersion", dojox.off.STORAGE_NAMESPACE);
dojox.storage.remove("justDebugged", dojox.off.STORAGE_NAMESPACE);
callback(oldVersion, newVersion, justDebugged);
},
load: function(data){
//console.warn("dojox.off.files._getVersionInfo, load=",data);
// some servers incorrectly return 404's
// as a real page
if(data){
newVersion = data;
}
callback(oldVersion, newVersion, justDebugged);
}
});
}
}
}
if(!dojo._hasResource["dojox.off.sync"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off.sync"] = true;
dojo.provide("dojox.off.sync");
// Author: Brad Neuberg, bkn3@columbia.edu, http://codinginparadise.org
// summary:
// Exposes syncing functionality to offline applications
dojo.mixin(dojox.off.sync, {
// isSyncing: boolean
// Whether we are in the middle of a syncing session.
isSyncing: false,
// cancelled: boolean
// Whether we were cancelled during our last sync request or not. If
// we are cancelled, then successful will be false.
cancelled: false,
// successful: boolean
// Whether the last sync was successful or not. If false, an error
// occurred.
successful: true,
// details: String[]
// Details on the sync. If the sync was successful, this will carry
// any conflict or merging messages that might be available; if the
// sync was unsuccessful, this will have an error message. For both
// of these, this should be an array of Strings, where each string
// carries details on the sync.
// Example:
// dojox.off.sync.details = ["The document 'foobar' had conflicts - yours one",
// "The document 'hello world' was automatically merged"];
details: [],
// error: boolean
// Whether an error occurred during the syncing process.
error: false,
// actions: dojox.off.sync.ActionLog
// Our ActionLog that we store offline actions into for later
// replaying when we go online
actions: null,
// autoSync: boolean
// For advanced usage; most developers can ignore this.
// Whether we do automatically sync on page load or when we go online.
// If true we do, if false syncing must be manually initiated.
// Defaults to true.
autoSync: true,
// summary:
// An event handler that is called during the syncing process with
// the state of syncing. It is important that you connect to this
// method and respond to certain sync events, especially the
// "download" event.
// description:
// This event handler is called during the syncing process. You can
// do a dojo.connect to receive sync feedback:
//
// dojo.connect(dojox.off.sync, "onSync", someFunc);
//
// You will receive one argument, which is the type of the event
// and which can have the following values.
//
// The most common two types that you need to care about are "download"
// and "finished", especially if you are using the default
// Dojo Offline UI widget that does the hard work of informing
// the user through the UI about what is occuring during syncing.
//
// If you receive the "download" event, you should make a network call
// to retrieve and store your data somehow for offline access. The
// "finished" event indicates that syncing is done. An example:
//
// dojo.connect(dojox.off.sync, "onSync", function(type){
// if(type == "download"){
// // make a network call to download some data
// // for use offline
// dojo.xhrGet({
// url: "downloadData.php",
// handleAs: "javascript",
// error: function(err){
// dojox.off.sync.finishedDownloading(false, "Can't download data");
// },
// load: function(data){
// // store our data
// dojox.storage.put("myData", data);
//
// // indicate we are finished downloading
// dojox.off.sync.finishedDownloading(true);
// }
// });
// }else if(type == "finished"){
// // update UI somehow to indicate we are finished,
// // such as using the download data to change the
// // available data
// }
// })
//
// Here is the full list of event types if you want to do deep
// customization, such as updating your UI to display the progress
// of syncing (note that the default Dojo Offline UI widget does
// this for you if you choose to pull that in). Most of these
// are only appropriate for advanced usage and can be safely
// ignored:
//
// * "start"
// syncing has started
// * "refreshFiles"
// syncing will begin refreshing
// our offline file cache
// * "upload"
// syncing will begin uploading
// any local data changes we have on the client.
// This event is fired before we fire
// the dojox.off.sync.actions.onReplay event for
// each action to replay; use it to completely
// over-ride the replaying behavior and prevent
// it entirely, perhaps rolling your own sync
// protocol if needed.
// * "download"
// syncing will begin downloading any new data that is
// needed into persistent storage. Applications are required to
// implement this themselves, storing the required data into
// persistent local storage using Dojo Storage.
// * "finished"
// syncing is finished; this
// will be called whether an error ocurred or not; check
// dojox.off.sync.successful and dojox.off.sync.error for sync details
// * "cancel"
// Fired when canceling has been initiated; canceling will be
// attempted, followed by the sync event "finished".
onSync: function(/* String */ type){},
synchronize: function(){ /* void */
// summary: Starts synchronizing
//dojo.debug("synchronize");
if(this.isSyncing || dojox.off.goingOnline || (!dojox.off.isOnline)){
return;
}
this.isSyncing = true;
this.successful = false;
this.details = [];
this.cancelled = false;
this.start();
},
cancel: function(){ /* void */
// summary:
// Attempts to cancel this sync session
if(!this.isSyncing){ return; }
this.cancelled = true;
if(dojox.off.files.refreshing){
dojox.off.files.abortRefresh();
}
this.onSync("cancel");
},
finishedDownloading: function(successful /* boolean? */,
errorMessage /* String? */){
// summary:
// Applications call this method from their
// after getting a "download" event in
// dojox.off.sync.onSync to signal that
// they are finished downloading any data
// that should be available offline
// successful: boolean?
// Whether our downloading was successful or not.
// If not present, defaults to true.
// errorMessage: String?
// If unsuccessful, a message explaining why
if(typeof successful == "undefined"){
successful = true;
}
if(!successful){
this.successful = false;
this.details.push(errorMessage);
this.error = true;
}
this.finished();
},
start: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Called at the start of the syncing process. Advanced
// developers can over-ride this method to use their
// own sync mechanism to start syncing.
if(this.cancelled){
this.finished();
return;
}
this.onSync("start");
this.refreshFiles();
},
refreshFiles: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Called when we are going to refresh our list
// of offline files during syncing. Advanced developers
// can over-ride this method to do some advanced magic related to
// refreshing files.
//dojo.debug("refreshFiles");
if(this.cancelled){
this.finished();
return;
}
this.onSync("refreshFiles");
dojox.off.files.refresh(dojo.hitch(this, function(error, errorMessages){
if(error){
this.error = true;
this.successful = false;
for(var i = 0; i < errorMessages.length; i++){
this.details.push(errorMessages[i]);
}
// even if we get an error while syncing files,
// keep syncing so we can upload and download
// data
}
this.upload();
}));
},
upload: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Called when syncing wants to upload data. Advanced
// developers can over-ride this method to completely
// throw away the Action Log and replaying system
// and roll their own advanced sync mechanism if needed.
if(this.cancelled){
this.finished();
return;
}
this.onSync("upload");
// when we are done uploading start downloading
dojo.connect(this.actions, "onReplayFinished", this, this.download);
// replay the actions log
this.actions.replay();
},
download: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Called when syncing wants to download data. Advanced
// developers can over-ride this method to use their
// own sync mechanism.
if(this.cancelled){
this.finished();
return;
}
// apps should respond to the "download"
// event to download their data; when done
// they must call dojox.off.sync.finishedDownloading()
this.onSync("download");
},
finished: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Called when syncing is finished. Advanced
// developers can over-ride this method to clean
// up after finishing their own sync
// mechanism they might have rolled.
this.isSyncing = false;
this.successful = (!this.cancelled && !this.error);
this.onSync("finished");
},
_save: function(callback){
this.actions._save(function(){
callback();
});
},
_load: function(callback){
this.actions._load(function(){
callback();
});
}
});
// summary:
// A class that records actions taken by a user when they are offline,
// suitable for replaying when the network reappears.
// description:
// The basic idea behind this method is to record user actions that would
// normally have to contact a server into an action log when we are
// offline, so that later when we are online we can simply replay this log
// in the order user actions happened so that they can be executed against
// the server, causing synchronization to happen.
//
// When we replay, for each of the actions that were added, we call a
// method named onReplay that applications should connect to and
// which will be called over and over for each of our actions --
// applications should take the offline action
// information and use it to talk to a server to have this action
// actually happen online, 'syncing' themselves with the server.
//
// For example, if the action was "update" with the item that was updated, we
// might call some RESTian server API that exists for updating an item in
// our application. The server could either then do sophisticated merging
// and conflict resolution on the server side, for example, allowing you
// to pop up a custom merge UI, or could do automatic merging or nothing
// of the sort. When you are finished with this particular action, your
// application is then required to call continueReplay() on the actionLog object
// passed to onReplay() to continue replaying the action log, or haltReplay()
// with the reason for halting to completely stop the syncing/replaying
// process.
//
// For example, imagine that we have a web application that allows us to add
// contacts. If we are offline, and we update a contact, we would add an action;
// imagine that the user has to click an Update button after changing the values
// for a given contact:
//
// dojox.off.whenOffline(dojo.byId("updateButton"), "onclick", function(evt){
// // get the updated customer values
// var customer = getCustomerValues();
//
// // we are offline -- just record this action
// var action = {name: "update", customer: customer};
// dojox.off.sync.actions.add(action)
//
// // persist this customer data into local storage as well
// dojox.storage.put(customer.name, customer);
// })
//
// Then, when we go back online, the dojox.off.sync.actions.onReplay event
// will fire over and over, once for each action that was recorded while offline:
//
// dojo.connect(dojox.off.sync.actions, "onReplay", function(action, actionLog){
// // called once for each action we added while offline, in the order
// // they were added
// if(action.name == "update"){
// var customer = action.customer;
//
// // call some network service to update this customer
// dojo.xhrPost({
// url: "updateCustomer.php",
// content: {customer: dojo.toJson(customer)},
// error: function(err){
// actionLog.haltReplay(err);
// },
// load: function(data){
// actionLog.continueReplay();
// }
// })
// }
// })
//
// Note that the actions log is always automatically persisted locally while using it, so
// that if the user closes the browser or it crashes the actions will safely be stored
// for later replaying.
dojo.declare("dojox.off.sync.ActionLog", null, {
// entries: Array
// An array of our action entries, where each one is simply a custom
// object literal that were passed to add() when this action entry
// was added.
entries: [],
// reasonHalted: String
// If we halted, the reason why
reasonHalted: null,
// isReplaying: boolean
// If true, we are in the middle of replaying a command log; if false,
// then we are not
isReplaying: false,
// autoSave: boolean
// Whether we automatically save the action log after each call to
// add(); defaults to true. For applications that are rapidly adding
// many action log entries in a short period of time, it can be
// useful to set this to false and simply call save() yourself when
// you are ready to persist your command log -- otherwise performance
// could be slow as the default action is to attempt to persist the
// actions log constantly with calls to add().
autoSave: true,
add: function(action /* Object */){ /* void */
// summary:
// Adds an action to our action log
// description:
// This method will add an action to our
// action log, later to be replayed when we
// go from offline to online. 'action'
// will be available when this action is
// replayed and will be passed to onReplay.
//
// Example usage:
//
// dojox.off.sync.log.add({actionName: "create", itemType: "document",
// {title: "Message", content: "Hello World"}});
//
// The object literal is simply a custom object appropriate
// for our application -- it can be anything that preserves the state
// of a user action that will be executed when we go back online
// and replay this log. In the above example,
// "create" is the name of this action; "documents" is the
// type of item this command is operating on, such as documents, contacts,
// tasks, etc.; and the final argument is the document that was created.
if(this.isReplaying){
throw "Programming error: you can not call "
+ "dojox.off.sync.actions.add() while "
+ "we are replaying an action log";
}
this.entries.push(action);
// save our updated state into persistent
// storage
if(this.autoSave){
this._save();
}
},
onReplay: function(action /* Object */,
actionLog /* dojox.off.sync.ActionLog */){ /* void */
// summary:
// Called when we replay our log, for each of our action
// entries.
// action: Object
// A custom object literal representing an action for this
// application, such as
// {actionName: "create", item: {title: "message", content: "hello world"}}
// actionLog: dojox.off.sync.ActionLog
// A reference to the dojox.off.sync.actions log so that developers
// can easily call actionLog.continueReplay() or actionLog.haltReplay().
// description:
// This callback should be connected to by applications so that
// they can sync themselves when we go back online:
//
// dojo.connect(dojox.off.sync.actions, "onReplay", function(action, actionLog){
// // do something
// })
//
// When we replay our action log, this callback is called for each
// of our action entries in the order they were added. The
// 'action' entry that was passed to add() for this action will
// also be passed in to onReplay, so that applications can use this information
// to do their syncing, such as contacting a server web-service
// to create a new item, for example.
//
// Inside the method you connected to onReplay, you should either call
// actionLog.haltReplay(reason) if an error occurred and you would like to halt
// action replaying or actionLog.continueReplay() to have the action log
// continue replaying its log and proceed to the next action;
// the reason you must call these is the action you execute inside of
// onAction will probably be asynchronous, since it will be talking on
// the network, and you should call one of these two methods based on
// the result of your network call.
},
length: function(){ /* Number */
// summary:
// Returns the length of this
// action log
return this.entries.length;
},
haltReplay: function(reason /* String */){ /* void */
// summary: Halts replaying this command log.
// reason: String
// The reason we halted.
// description:
// This method is called as we are replaying an action log; it
// can be called from dojox.off.sync.actions.onReplay, for
// example, for an application to indicate an error occurred
// while replaying this action, halting further processing of
// the action log. Note that any action log entries that
// were processed before have their effects retained (i.e.
// they are not rolled back), while the action entry that was
// halted stays in our list of actions to later be replayed.
if(!this.isReplaying){
return;
}
if(reason){
this.reasonHalted = reason.toString();
}
// save the state of our action log, then
// tell anyone who is interested that we are
// done when we are finished saving
if(this.autoSave){
var self = this;
this._save(function(){
self.isReplaying = false;
self.onReplayFinished();
});
}else{
this.isReplaying = false;
this.onReplayFinished();
}
},
continueReplay: function(){ /* void */
// summary:
// Indicates that we should continue processing out list of
// actions.
// description:
// This method is called by applications that have overridden
// dojox.off.sync.actions.onReplay() to continue replaying our
// action log after the application has finished handling the
// current action.
if(!this.isReplaying){
return;
}
// shift off the old action we just ran
this.entries.shift();
// are we done?
if(!this.entries.length){
// save the state of our action log, then
// tell anyone who is interested that we are
// done when we are finished saving
if(this.autoSave){
var self = this;
this._save(function(){
self.isReplaying = false;
self.onReplayFinished();
});
return;
}else{
this.isReplaying = false;
this.onReplayFinished();
return;
}
}
// get the next action
var nextAction = this.entries[0];
this.onReplay(nextAction, this);
},
clear: function(){ /* void */
// summary:
// Completely clears this action log of its entries
if(this.isReplaying){
return;
}
this.entries = [];
// save our updated state into persistent
// storage
if(this.autoSave){
this._save();
}
},
replay: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Replays all of the commands that have been
// cached in this command log when we go back online;
// onCommand will be called for each command we have
if(this.isReplaying){
return;
}
this.reasonHalted = null;
if(!this.entries.length){
this.onReplayFinished();
return;
}
this.isReplaying = true;
var nextAction = this.entries[0];
this.onReplay(nextAction, this);
},
// onReplayFinished: Function
// For advanced usage; most developers can ignore this.
// Called when we are finished replaying our commands;
// called if we have successfully exhausted all of our
// commands, or if an error occurred during replaying.
// The default implementation simply continues the
// synchronization process. Connect to this to register
// for the event:
//
// dojo.connect(dojox.off.sync.actions, "onReplayFinished",
// someFunc)
onReplayFinished: function(){
},
toString: function(){
var results = "";
results += "[";
for(var i = 0; i < this.entries.length; i++){
results += "{";
for(var j in this.entries[i]){
results += j + ": \"" + this.entries[i][j] + "\"";
results += ", ";
}
results += "}, ";
}
results += "]";
return results;
},
_save: function(callback){
if(!callback){
callback = function(){};
}
try{
var self = this;
var resultsHandler = function(status, key, message){
//console.debug("resultsHandler, status="+status+", key="+key+", message="+message);
if(status == dojox.storage.FAILED){
dojox.off.onFrameworkEvent("save",
{status: dojox.storage.FAILED,
isCoreSave: true,
key: key,
value: message,
namespace: dojox.off.STORAGE_NAMESPACE});
callback();
}else if(status == dojox.storage.SUCCESS){
callback();
}
};
dojox.storage.put("actionlog", this.entries, resultsHandler,
dojox.off.STORAGE_NAMESPACE);
}catch(exp){
console.debug("dojox.off.sync._save: " + exp.message||exp);
dojox.off.onFrameworkEvent("save",
{status: dojox.storage.FAILED,
isCoreSave: true,
key: "actionlog",
value: this.entries,
namespace: dojox.off.STORAGE_NAMESPACE});
callback();
}
},
_load: function(callback){
var entries = dojox.storage.get("actionlog", dojox.off.STORAGE_NAMESPACE);
if(!entries){
entries = [];
}
this.entries = entries;
callback();
}
}
);
dojox.off.sync.actions = new dojox.off.sync.ActionLog();
}
if(!dojo._hasResource["dojox.off._common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off._common"] = true;
dojo.provide("dojox.off._common");
// Author: Brad Neuberg, bkn3@columbia.edu, http://codinginparadise.org
// summary:
// dojox.off is the main object for offline applications.
dojo.mixin(dojox.off, {
// isOnline: boolean
// true if we are online, false if not
isOnline: false,
// NET_CHECK: int
// For advanced usage; most developers can ignore this.
// Time in seconds on how often we should check the status of the
// network with an automatic background timer. The current default
// is 5 seconds.
NET_CHECK: 5,
// STORAGE_NAMESPACE: String
// For advanced usage; most developers can ignore this.
// The namespace we use to save core data into Dojo Storage.
STORAGE_NAMESPACE: "_dot",
// enabled: boolean
// For advanced usage; most developers can ignore this.
// Whether offline ability is enabled or not. Defaults to true.
enabled: true,
// availabilityURL: String
// For advanced usage; most developers can ignore this.
// The URL to check for site availability. We do a GET request on
// this URL to check for site availability. By default we check for a
// simple text file in src/off/network_check.txt that has one value
// it, the value '1'.
availabilityURL: dojo.moduleUrl("dojox", "off/network_check.txt"),
// goingOnline: boolean
// For advanced usage; most developers can ignore this.
// True if we are attempting to go online, false otherwise
goingOnline: false,
// coreOpFailed: boolean
// For advanced usage; most developers can ignore this.
// A flag set by the Dojo Offline framework that indicates that the
// user denied some operation that required the offline cache or an
// operation failed in some critical way that was unrecoverable. For
// example, if the offline cache is Google Gears and we try to get a
// Gears database, a popup window appears asking the user whether they
// will approve or deny this request. If the user denies the request,
// and we are doing some operation that is core to Dojo Offline, then
// we set this flag to 'true'. This flag causes a 'fail fast'
// condition, turning off offline ability.
coreOpFailed: false,
// doNetChecking: boolean
// For advanced usage; most developers can ignore this.
// Whether to have a timing interval in the background doing automatic
// network checks at regular intervals; the length of time between
// checks is controlled by dojox.off.NET_CHECK. Defaults to true.
doNetChecking: true,
// hasOfflineCache: boolean
// For advanced usage; most developers can ignore this.
// Determines if an offline cache is available or installed; an
// offline cache is a facility that can truely cache offline
// resources, such as JavaScript, HTML, etc. in such a way that they
// won't be removed from the cache inappropriately like a browser
// cache would. If this is false then an offline cache will be
// installed. Only Google Gears is currently supported as an offline
// cache. Future possible offline caches include Firefox 3.
hasOfflineCache: null,
// browserRestart: boolean
// For advanced usage; most developers can ignore this.
// If true, the browser must be restarted to register the existence of
// a new host added offline (from a call to addHostOffline); if false,
// then nothing is needed.
browserRestart: false,
_STORAGE_APP_NAME: window.location.href.replace(/[^0-9A-Za-z_]/g, "_"),
_initializeCalled: false,
_storageLoaded: false,
_pageLoaded: false,
onLoad: function(){
// summary:
// Called when Dojo Offline can be used.
// description:
// Do a dojo.connect to this to know when you can
// start using Dojo Offline:
// dojo.connect(dojox.off, "onLoad", myFunc);
},
onNetwork: function(type){
// summary:
// Called when our on- or offline- status changes.
// description:
// If we move online, then this method is called with the
// value "online". If we move offline, then this method is
// called with the value "offline". You can connect to this
// method to do add your own behavior:
//
// dojo.connect(dojox.off, "onNetwork", someFunc)
//
// Note that if you are using the default Dojo Offline UI
// widget that most of the on- and off-line notification
// and syncing is automatically handled and provided to the
// user.
// type: String
// Either "online" or "offline".
},
initialize: function(){ /* void */
// summary:
// Called when a Dojo Offline-enabled application is finished
// configuring Dojo Offline, and is ready for Dojo Offline to
// initialize itself.
// description:
// When an application has finished filling out the variables Dojo
// Offline needs to work, such as dojox.off.ui.appName, it must
// this method to tell Dojo Offline to initialize itself.
// Note:
// This method is needed for a rare edge case. In some conditions,
// especially if we are dealing with a compressed Dojo build, the
// entire Dojo Offline subsystem might initialize itself and be
// running even before the JavaScript for an application has had a
// chance to run and configure Dojo Offline, causing Dojo Offline
// to have incorrect initialization parameters for a given app,
// such as no value for dojox.off.ui.appName. This method is
// provided to prevent this scenario, to slightly 'slow down' Dojo
// Offline so it can be configured before running off and doing
// its thing.
//console.debug("dojox.off.initialize");
this._initializeCalled = true;
if(this._storageLoaded && this._pageLoaded){
this._onLoad();
}
},
goOffline: function(){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Manually goes offline, away from the network.
if((dojox.off.sync.isSyncing)||(this.goingOnline)){ return; }
this.goingOnline = false;
this.isOnline = false;
},
goOnline: function(callback){ /* void */
// summary:
// For advanced usage; most developers can ignore this.
// Attempts to go online.
// description:
// Attempts to go online, making sure this web application's web
// site is available. 'callback' is called asychronously with the
// result of whether we were able to go online or not.
// callback: Function
// An optional callback function that will receive one argument:
// whether the site is available or not and is boolean. If this
// function is not present we call dojo.xoff.onOnline instead if
// we are able to go online.
//console.debug("goOnline");
if(dojox.off.sync.isSyncing || dojox.off.goingOnline){
return;
}
this.goingOnline = true;
this.isOnline = false;
// see if can reach our web application's web site
this._isSiteAvailable(callback);
},
onFrameworkEvent: function(type /* String */, saveData /* Object? */){
// summary:
// For advanced usage; most developers can ignore this.
// A standard event handler that can be attached to to find out
// about low-level framework events. Most developers will not need to
// attach to this method; it is meant for low-level information
// that can be useful for updating offline user-interfaces in
// exceptional circumstances. The default Dojo Offline UI
// widget takes care of most of these situations.
// type: String
// The type of the event:
//
// * "offlineCacheInstalled"
// An event that is fired when a user
// has installed an offline cache after the page has been loaded.
// If a user didn't have an offline cache when the page loaded, a
// UI of some kind might have prompted them to download one. This
// method is called if they have downloaded and installed an
// offline cache so a UI can reinitialize itself to begin using
// this offline cache.
// * "coreOperationFailed"
// Fired when a core operation during interaction with the
// offline cache is denied by the user. Some offline caches, such
// as Google Gears, prompts the user to approve or deny caching
// files, using the database, and more. If the user denies a
// request that is core to Dojo Offline's operation, we set
// dojox.off.coreOpFailed to true and call this method for
// listeners that would like to respond some how to Dojo Offline
// 'failing fast'.
// * "save"
// Called whenever the framework saves data into persistent
// storage. This could be useful for providing save feedback
// or providing appropriate error feedback if saving fails
// due to a user not allowing the save to occur
// saveData: Object?
// If the type was 'save', then a saveData object is provided with
// further save information. This object has the following properties:
//
// * status - dojox.storage.SUCCESS, dojox.storage.PENDING, dojox.storage.FAILED
// Whether the save succeeded, whether it is pending based on a UI
// dialog asking the user for permission, or whether it failed.
//
// * isCoreSave - boolean
// If true, then this save was for a core piece of data necessary
// for the functioning of Dojo Offline. If false, then it is a
// piece of normal data being saved for offline access. Dojo
// Offline will 'fail fast' if some core piece of data could not
// be saved, automatically setting dojox.off.coreOpFailed to
// 'true' and dojox.off.enabled to 'false'.
//
// * key - String
// The key that we are attempting to persist
//
// * value - Object
// The object we are trying to persist
//
// * namespace - String
// The Dojo Storage namespace we are saving this key/value pair
// into, such as "default", "Documents", "Contacts", etc.
// Optional.
if(type == "save"){
if(saveData.isCoreSave && (saveData.status == dojox.storage.FAILED)){
dojox.off.coreOpFailed = true;
dojox.off.enabled = false;
// FIXME: Stop the background network thread
dojox.off.onFrameworkEvent("coreOperationFailed");
}
}else if(type == "coreOperationFailed"){
dojox.off.coreOpFailed = true;
dojox.off.enabled = false;
// FIXME: Stop the background network thread
}
},
_checkOfflineCacheAvailable: function(callback){
// is a true, offline cache running on this machine?
this.hasOfflineCache = dojo.isGears;
callback();
},
_onLoad: function(){
//console.debug("dojox.off._onLoad");
// both local storage and the page are finished loading
// cache the Dojo JavaScript -- just use the default dojo.js
// name for the most common scenario
// FIXME: TEST: Make sure syncing doesn't break if dojo.js
// can't be found, or report an error to developer
dojox.off.files.cache(dojo.moduleUrl("dojo", "dojo.js"));
// pull in the files needed by Dojo
this._cacheDojoResources();
// FIXME: need to pull in the firebug lite files here!
// workaround or else we will get an error on page load
// from Dojo that it can't find 'console.debug' for optimized builds
// dojox.off.files.cache(djConfig.baseRelativePath + "src/debug.js");
// make sure that resources needed by all of our underlying
// Dojo Storage storage providers will be available
// offline
dojox.off.files.cache(dojox.storage.manager.getResourceList());
// slurp the page if the end-developer wants that
dojox.off.files._slurp();
// see if we have an offline cache; when done, move
// on to the rest of our startup tasks
this._checkOfflineCacheAvailable(dojo.hitch(this, "_onOfflineCacheChecked"));
},
_onOfflineCacheChecked: function(){
// this method is part of our _onLoad series of startup tasks
// if we have an offline cache, see if we have been added to the
// list of available offline web apps yet
if(this.hasOfflineCache && this.enabled){
// load framework data; when we are finished, continue
// initializing ourselves
this._load(dojo.hitch(this, "_finishStartingUp"));
}else if(this.hasOfflineCache && !this.enabled){
// we have an offline cache, but it is disabled for some reason
// perhaps due to the user denying a core operation
this._finishStartingUp();
}else{
this._keepCheckingUntilInstalled();
}
},
_keepCheckingUntilInstalled: function(){
// this method is part of our _onLoad series of startup tasks
// kick off a background interval that keeps
// checking to see if an offline cache has been
// installed since this page loaded
// FIXME: Gears: See if we are installed somehow after the
// page has been loaded
// now continue starting up
this._finishStartingUp();
},
_finishStartingUp: function(){
//console.debug("dojox.off._finishStartingUp");
// this method is part of our _onLoad series of startup tasks
if(!this.hasOfflineCache){
this.onLoad();
}else if(this.enabled){
// kick off a thread to check network status on
// a regular basis
this._startNetworkThread();
// try to go online
this.goOnline(dojo.hitch(this, function(){
//console.debug("Finished trying to go online");
// indicate we are ready to be used
dojox.off.onLoad();
}));
}else{ // we are disabled or a core operation failed
if(this.coreOpFailed){
this.onFrameworkEvent("coreOperationFailed");
}else{
this.onLoad();
}
}
},
_onPageLoad: function(){
//console.debug("dojox.off._onPageLoad");
this._pageLoaded = true;
if(this._storageLoaded && this._initializeCalled){
this._onLoad();
}
},
_onStorageLoad: function(){
//console.debug("dojox.off._onStorageLoad");
this._storageLoaded = true;
// were we able to initialize storage? if
// not, then this is a core operation, and
// let's indicate we will need to fail fast
if(!dojox.storage.manager.isAvailable()
&& dojox.storage.manager.isInitialized()){
this.coreOpFailed = true;
this.enabled = false;
}
if(this._pageLoaded && this._initializeCalled){
this._onLoad();
}
},
_isSiteAvailable: function(callback){
// summary:
// Determines if our web application's website is available.
// description:
// This method will asychronously determine if our web
// application's web site is available, which is a good proxy for
// network availability. The URL dojox.off.availabilityURL is
// used, which defaults to this site's domain name (ex:
// foobar.com). We check for dojox.off.AVAILABILITY_TIMEOUT (in
// seconds) and abort after that
// callback: Function
// An optional callback function that will receive one argument:
// whether the site is available or not and is boolean. If this
// function is not present we call dojox.off.onNetwork instead if we
// are able to go online.
dojo.xhrGet({
url: this._getAvailabilityURL(),
handleAs: "text",
timeout: this.NET_CHECK * 1000,
error: dojo.hitch(this, function(err){
//console.debug("dojox.off._isSiteAvailable.error: " + err);
this.goingOnline = false;
this.isOnline = false;
if(callback){ callback(false); }
}),
load: dojo.hitch(this, function(data){
//console.debug("dojox.off._isSiteAvailable.load, data="+data);
this.goingOnline = false;
this.isOnline = true;
if(callback){ callback(true);
}else{ this.onNetwork("online"); }
})
});
},
_startNetworkThread: function(){
//console.debug("startNetworkThread");
// kick off a thread that does periodic
// checks on the status of the network
if(!this.doNetChecking){
return;
}
window.setInterval(dojo.hitch(this, function(){
var d = dojo.xhrGet({
url: this._getAvailabilityURL(),
handleAs: "text",
timeout: this.NET_CHECK * 1000,
error: dojo.hitch(this,
function(err){
if(this.isOnline){
this.isOnline = false;
// FIXME: xhrGet() is not
// correctly calling abort
// on the XHR object when
// it times out; fix inside
// there instead of externally
// here
try{
if(typeof d.ioArgs.xhr.abort == "function"){
d.ioArgs.xhr.abort();
}
}catch(e){}
// if things fell in the middle of syncing,
// stop syncing
dojox.off.sync.isSyncing = false;
this.onNetwork("offline");
}
}
),
load: dojo.hitch(this,
function(data){
if(!this.isOnline){
this.isOnline = true;
this.onNetwork("online");
}
}
)
});
}), this.NET_CHECK * 1000);
},
_getAvailabilityURL: function(){
var url = this.availabilityURL.toString();
// bust the browser's cache to make sure we are really talking to
// the server
if(url.indexOf("?") == -1){
url += "?";
}else{
url += "&";
}
url += "browserbust=" + new Date().getTime();
return url;
},
_onOfflineCacheInstalled: function(){
this.onFrameworkEvent("offlineCacheInstalled");
},
_cacheDojoResources: function(){
// if we are a non-optimized build, then the core Dojo bootstrap
// system was loaded as separate JavaScript files;
// add these to our offline cache list. these are
// loaded before the dojo.require() system exists
// FIXME: create a better mechanism in the Dojo core to
// expose whether you are dealing with an optimized build;
// right now we just scan the SCRIPT tags attached to this
// page and see if there is one for _base/_loader/bootstrap.js
var isOptimizedBuild = true;
dojo.forEach(dojo.query("script"), function(i){
var src = i.getAttribute("src");
if(!src){ return; }
if(src.indexOf("_base/_loader/bootstrap.js") != -1){
isOptimizedBuild = false;
}
});
if(!isOptimizedBuild){
dojox.off.files.cache(dojo.moduleUrl("dojo", "_base.js").uri);
dojox.off.files.cache(dojo.moduleUrl("dojo", "_base/_loader/loader.js").uri);
dojox.off.files.cache(dojo.moduleUrl("dojo", "_base/_loader/bootstrap.js").uri);
// FIXME: pull in the host environment file in a more generic way
// for other host environments
dojox.off.files.cache(dojo.moduleUrl("dojo", "_base/_loader/hostenv_browser.js").uri);
}
// add anything that was brought in with a
// dojo.require() that resulted in a JavaScript
// URL being fetched
// FIXME: modify dojo/_base/_loader/loader.js to
// expose a public API to get this information
for(var i = 0; i < dojo._loadedUrls.length; i++){
dojox.off.files.cache(dojo._loadedUrls[i]);
}
// FIXME: add the standard Dojo CSS file
},
_save: function(){
// summary:
// Causes the Dojo Offline framework to save its configuration
// data into local storage.
},
_load: function(callback){
// summary:
// Causes the Dojo Offline framework to load its configuration
// data from local storage
dojox.off.sync._load(callback);
}
});
// wait until the storage system is finished loading
dojox.storage.manager.addOnLoad(dojo.hitch(dojox.off, "_onStorageLoad"));
// wait until the page is finished loading
dojo.addOnLoad(dojox.off, "_onPageLoad");
}
if(!dojo._hasResource["dojox.off"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off"] = true;
dojo.provide("dojox.off");
}
if(!dojo._hasResource["dojox.off.ui"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off.ui"] = true;
dojo.provide("dojox.off.ui");
// Author: Brad Neuberg, bkn3@columbia.edu, http://codinginparadise.org
// summary:
// dojox.off.ui provides a standard,
// default user-interface for a
// Dojo Offline Widget that can easily
// be dropped into applications that would
// like to work offline.
dojo.mixin(dojox.off.ui, {
// appName: String
// This application's name, such as "Foobar". Note that
// this is a string, not HTML, so embedded markup will
// not work, including entities. Only the following
// characters are allowed: numbers, letters, and spaces.
// You must set this property.
appName: "setme",
// autoEmbed: boolean
// For advanced usage; most developers can ignore this.
// Whether to automatically auto-embed the default Dojo Offline
// widget into this page; default is true.
autoEmbed: true,
// autoEmbedID: String
// For advanced usage; most developers can ignore this.
// The ID of the DOM element that will contain our
// Dojo Offline widget; defaults to the ID 'dot-widget'.
autoEmbedID: "dot-widget",
// runLink: String
// For advanced usage; most developers can ignore this.
// The URL that should be navigated to to run this
// application offline; this will be placed inside of a
// link that the user can drag to their desktop and double
// click. Note that this URL must exactly match the URL
// of the main page of our resource that is offline for
// it to be retrieved from the offline cache correctly.
// For example, if you have cached your main page as
// http://foobar.com/index.html, and you set this to
// http://www.foobar.com/index.html, the run link will
// not work. By default this value is automatically set to
// the URL of this page, so it does not need to be set
// manually unless you have unusual needs.
runLink: window.location.href,
// runLinkTitle: String
// For advanced usage; most developers can ignore this.
// The text that will be inside of the link that a user
// can drag to their desktop to run this application offline.
// By default this is automatically set to "Run " plus your
// application's name.
runLinkTitle: "Run Application",
// learnHowPath: String
// For advanced usage; most developers can ignore this.
// The path to a web page that has information on
// how to use this web app offline; defaults to
// src/off/ui-template/learnhow.html, relative to
// your Dojo installation. Make sure to set
// dojo.to.ui.customLearnHowPath to true if you want
// a custom Learn How page.
learnHowPath: dojo.moduleUrl("dojox", "off/resources/learnhow.html"),
// customLearnHowPath: boolean
// For advanced usage; most developers can ignore this.
// Whether the developer is using their own custom page
// for the Learn How instructional page; defaults to false.
// Use in conjunction with dojox.off.ui.learnHowPath.
customLearnHowPath: false,
htmlTemplatePath: dojo.moduleUrl("dojox", "off/resources/offline-widget.html").uri,
cssTemplatePath: dojo.moduleUrl("dojox", "off/resources/offline-widget.css").uri,
onlineImagePath: dojo.moduleUrl("dojox", "off/resources/greenball.png").uri,
offlineImagePath: dojo.moduleUrl("dojox", "off/resources/redball.png").uri,
rollerImagePath: dojo.moduleUrl("dojox", "off/resources/roller.gif").uri,
checkmarkImagePath: dojo.moduleUrl("dojox", "off/resources/checkmark.png").uri,
learnHowJSPath: dojo.moduleUrl("dojox", "off/resources/learnhow.js").uri,
_initialized: false,
onLoad: function(){
// summary:
// A function that should be connected to allow your
// application to know when Dojo Offline, the page, and
// the Offline Widget are all initialized and ready to be
// used:
//
// dojo.connect(dojox.off.ui, "onLoad", someFunc)
},
_initialize: function(){
//console.debug("dojox.off.ui._initialize");
// make sure our app name is correct
if(this._validateAppName(this.appName) == false){
alert("You must set dojox.off.ui.appName; it can only contain "
+ "letters, numbers, and spaces; right now it "
+ "is incorrectly set to '" + dojox.off.ui.appName + "'");
dojox.off.enabled = false;
return;
}
// set our run link text to its default
this.runLinkText = "Run " + this.appName;
// setup our event listeners for Dojo Offline events
// to update our UI
dojo.connect(dojox.off, "onNetwork", this, "_onNetwork");
dojo.connect(dojox.off.sync, "onSync", this, "_onSync");
// cache our default UI resources
dojox.off.files.cache([
this.htmlTemplatePath,
this.cssTemplatePath,
this.onlineImagePath,
this.offlineImagePath,
this.rollerImagePath,
this.checkmarkImagePath
]);
// embed the offline widget UI
if(this.autoEmbed){
this._doAutoEmbed();
}
},
_doAutoEmbed: function(){
// fetch our HTML for the offline widget
// dispatch the request
dojo.xhrGet({
url: this.htmlTemplatePath,
handleAs: "text",
error: function(err){
dojox.off.enabled = false;
err = err.message||err;
alert("Error loading the Dojo Offline Widget from "
+ this.htmlTemplatePath + ": " + err);
},
load: dojo.hitch(this, this._templateLoaded)
});
},
_templateLoaded: function(data){
//console.debug("dojox.off.ui._templateLoaded");
// inline our HTML
var container = dojo.byId(this.autoEmbedID);
if(container){ container.innerHTML = data; }
// fill out our image paths
this._initImages();
// update our network indicator status ball
this._updateNetIndicator();
// update our 'Learn How' text
this._initLearnHow();
this._initialized = true;
// check offline cache settings
if(!dojox.off.hasOfflineCache){
this._showNeedsOfflineCache();
return;
}
// check to see if we need a browser restart
// to be able to use this web app offline
if(dojox.off.hasOfflineCache && dojox.off.browserRestart){
this._needsBrowserRestart();
return;
}else{
var browserRestart = dojo.byId("dot-widget-browser-restart");
if(browserRestart){ browserRestart.style.display = "none"; }
}
// update our sync UI
this._updateSyncUI();
// register our event listeners for our main buttons
this._initMainEvtHandlers();
// if offline functionality is disabled, disable everything
this._setOfflineEnabled(dojox.off.enabled);
// update our UI based on the state of the network
this._onNetwork(dojox.off.isOnline ? "online" : "offline");
// try to go online
this._testNet();
},
_testNet: function(){
dojox.off.goOnline(dojo.hitch(this, function(isOnline){
//console.debug("testNet callback, isOnline="+isOnline);
// display our online/offline results
this._onNetwork(isOnline ? "online" : "offline");
// indicate that our default UI
// and Dojo Offline are now ready to
// be used
this.onLoad();
}));
},
_updateNetIndicator: function(){
var onlineImg = dojo.byId("dot-widget-network-indicator-online");
var offlineImg = dojo.byId("dot-widget-network-indicator-offline");
var titleText = dojo.byId("dot-widget-title-text");
if(onlineImg && offlineImg){
if(dojox.off.isOnline == true){
onlineImg.style.display = "inline";
offlineImg.style.display = "none";
}else{
onlineImg.style.display = "none";
offlineImg.style.display = "inline";
}
}
if(titleText){
if(dojox.off.isOnline){
titleText.innerHTML = "Online";
}else{
titleText.innerHTML = "Offline";
}
}
},
_initLearnHow: function(){
var learnHow = dojo.byId("dot-widget-learn-how-link");
if(!learnHow){ return; }
if(!this.customLearnHowPath){
// add parameters to URL so the Learn How page
// can customize itself and display itself
// correctly based on framework settings
var dojoPath = djConfig.baseRelativePath;
this.learnHowPath += "?appName=" + encodeURIComponent(this.appName)
+ "&hasOfflineCache=" + dojox.off.hasOfflineCache
+ "&runLink=" + encodeURIComponent(this.runLink)
+ "&runLinkText=" + encodeURIComponent(this.runLinkText)
+ "&baseRelativePath=" + encodeURIComponent(dojoPath);
// cache our Learn How JavaScript page and
// the HTML version with full query parameters
// so it is available offline without a cache miss
dojox.off.files.cache(this.learnHowJSPath);
dojox.off.files.cache(this.learnHowPath);
}
learnHow.setAttribute("href", this.learnHowPath);
var appName = dojo.byId("dot-widget-learn-how-app-name");
if(!appName){ return; }
appName.innerHTML = "";
appName.appendChild(document.createTextNode(this.appName));
},
_validateAppName: function(appName){
if(!appName){ return false; }
return (/^[a-z0-9 ]*$/i.test(appName));
},
_updateSyncUI: function(){
var roller = dojo.byId("dot-roller");
var checkmark = dojo.byId("dot-success-checkmark");
var syncMessages = dojo.byId("dot-sync-messages");
var details = dojo.byId("dot-sync-details");
var cancel = dojo.byId("dot-sync-cancel");
if(dojox.off.sync.isSyncing){
this._clearSyncMessage();
if(roller){ roller.style.display = "inline"; }
if(checkmark){ checkmark.style.display = "none"; }
if(syncMessages){
dojo.removeClass(syncMessages, "dot-sync-error");
}
if(details){ details.style.display = "none"; }
if(cancel){ cancel.style.display = "inline"; }
}else{
if(roller){ roller.style.display = "none"; }
if(cancel){ cancel.style.display = "none"; }
if(syncMessages){
dojo.removeClass(syncMessages, "dot-sync-error");
}
}
},
_setSyncMessage: function(message){
var syncMessage = dojo.byId("dot-sync-messages");
if(syncMessage){
// when used with Google Gears pre-release in Firefox/Mac OS X,
// the browser would crash when testing in Moxie
// if we set the message this way for some reason.
// Brad Neuberg, bkn3@columbia.edu
//syncMessage.innerHTML = message;
while(syncMessage.firstChild){
syncMessage.removeChild(syncMessage.firstChild);
}
syncMessage.appendChild(document.createTextNode(message));
}
},
_clearSyncMessage: function(){
this._setSyncMessage("");
},
_initImages: function(){
var onlineImg = dojo.byId("dot-widget-network-indicator-online");
if(onlineImg){
onlineImg.setAttribute("src", this.onlineImagePath);
}
var offlineImg = dojo.byId("dot-widget-network-indicator-offline");
if(offlineImg){
offlineImg.setAttribute("src", this.offlineImagePath);
}
var roller = dojo.byId("dot-roller");
if(roller){
roller.setAttribute("src", this.rollerImagePath);
}
var checkmark = dojo.byId("dot-success-checkmark");
if(checkmark){
checkmark.setAttribute("src", this.checkmarkImagePath);
}
},
_showDetails: function(evt){
// cancel the button's default behavior
evt.preventDefault();
evt.stopPropagation();
if(!dojox.off.sync.details.length){
return;
}
// determine our HTML message to display
var html = "";
html += "<html><head><title>Sync Details</title><head><body>";
html += "<h1>Sync Details</h1>\n";
html += "<ul>\n";
for(var i = 0; i < dojox.off.sync.details.length; i++){
html += "<li>";
html += dojox.off.sync.details[i];
html += "</li>";
}
html += "</ul>\n";
html += "<a href='javascript:window.close()' "
+ "style='text-align: right; padding-right: 2em;'>"
+ "Close Window"
+ "</a>\n";
html += "</body></html>";
// open a popup window with this message
var windowParams = "height=400,width=600,resizable=true,"
+ "scrollbars=true,toolbar=no,menubar=no,"
+ "location=no,directories=no,dependent=yes";
var popup = window.open("", "SyncDetails", windowParams);
if(!popup){ // aggressive popup blocker
alert("Please allow popup windows for this domain; can't display sync details window");
return;
}
popup.document.open();
popup.document.write(html);
popup.document.close();
// put the focus on the popup window
if(popup.focus){
popup.focus();
}
},
_cancel: function(evt){
// cancel the button's default behavior
evt.preventDefault();
evt.stopPropagation();
dojox.off.sync.cancel();
},
_needsBrowserRestart: function(){
var browserRestart = dojo.byId("dot-widget-browser-restart");
if(browserRestart){
dojo.addClass(browserRestart, "dot-needs-browser-restart");
}
var appName = dojo.byId("dot-widget-browser-restart-app-name");
if(appName){
appName.innerHTML = "";
appName.appendChild(document.createTextNode(this.appName));
}
var status = dojo.byId("dot-sync-status");
if(status){
status.style.display = "none";
}
},
_showNeedsOfflineCache: function(){
var widgetContainer = dojo.byId("dot-widget-container");
if(widgetContainer){
dojo.addClass(widgetContainer, "dot-needs-offline-cache");
}
},
_hideNeedsOfflineCache: function(){
var widgetContainer = dojo.byId("dot-widget-container");
if(widgetContainer){
dojo.removeClass(widgetContainer, "dot-needs-offline-cache");
}
},
_initMainEvtHandlers: function(){
var detailsButton = dojo.byId("dot-sync-details-button");
if(detailsButton){
dojo.connect(detailsButton, "onclick", this, this._showDetails);
}
var cancelButton = dojo.byId("dot-sync-cancel-button");
if(cancelButton){
dojo.connect(cancelButton, "onclick", this, this._cancel);
}
},
_setOfflineEnabled: function(enabled){
var elems = [];
elems.push(dojo.byId("dot-sync-status"));
for(var i = 0; i < elems.length; i++){
if(elems[i]){
elems[i].style.visibility =
(enabled ? "visible" : "hidden");
}
}
},
_syncFinished: function(){
this._updateSyncUI();
var checkmark = dojo.byId("dot-success-checkmark");
var details = dojo.byId("dot-sync-details");
if(dojox.off.sync.successful == true){
this._setSyncMessage("Sync Successful");
if(checkmark){ checkmark.style.display = "inline"; }
}else if(dojox.off.sync.cancelled == true){
this._setSyncMessage("Sync Cancelled");
if(checkmark){ checkmark.style.display = "none"; }
}else{
this._setSyncMessage("Sync Error");
var messages = dojo.byId("dot-sync-messages");
if(messages){
dojo.addClass(messages, "dot-sync-error");
}
if(checkmark){ checkmark.style.display = "none"; }
}
if(dojox.off.sync.details.length && details){
details.style.display = "inline";
}
},
_onFrameworkEvent: function(type, saveData){
if(type == "save"){
if(saveData.status == dojox.storage.FAILED && !saveData.isCoreSave){
alert("Please increase the amount of local storage available "
+ "to this application");
if(dojox.storage.hasSettingsUI()){
dojox.storage.showSettingsUI();
}
// FIXME: Be able to know if storage size has changed
// due to user configuration
}
}else if(type == "coreOperationFailed"){
console.log("Application does not have permission to use Dojo Offline");
if(!this._userInformed){
alert("This application will not work if Google Gears is not allowed to run");
this._userInformed = true;
}
}else if(type == "offlineCacheInstalled"){
// clear out the 'needs offline cache' info
this._hideNeedsOfflineCache();
// check to see if we need a browser restart
// to be able to use this web app offline
if(dojox.off.hasOfflineCache == true
&& dojox.off.browserRestart == true){
this._needsBrowserRestart();
return;
}else{
var browserRestart = dojo.byId("dot-widget-browser-restart");
if(browserRestart){
browserRestart.style.display = "none";
}
}
// update our sync UI
this._updateSyncUI();
// register our event listeners for our main buttons
this._initMainEvtHandlers();
// if offline is disabled, disable everything
this._setOfflineEnabled(dojox.off.enabled);
// try to go online
this._testNet();
}
},
_onSync: function(type){
//console.debug("ui, onSync="+type);
switch(type){
case "start":
this._updateSyncUI();
break;
case "refreshFiles":
this._setSyncMessage("Downloading UI...");
break;
case "upload":
this._setSyncMessage("Uploading new data...");
break;
case "download":
this._setSyncMessage("Downloading new data...");
break;
case "finished":
this._syncFinished();
break;
case "cancel":
this._setSyncMessage("Canceling Sync...");
break;
default:
dojo.warn("Programming error: "
+ "Unknown sync type in dojox.off.ui: " + type);
break;
}
},
_onNetwork: function(type){
// summary:
// Called when we go on- or off-line
// description:
// When we go online or offline, this method is called to update
// our UI. Default behavior is to update the Offline
// Widget UI and to attempt a synchronization.
// type: String
// "online" if we just moved online, and "offline" if we just
// moved offline.
if(!this._initialized){ return; }
// update UI
this._updateNetIndicator();
if(type == "offline"){
this._setSyncMessage("You are working offline");
// clear old details
var details = dojo.byId("dot-sync-details");
if(details){ details.style.display = "none"; }
// if we fell offline during a sync, hide
// the sync info
this._updateSyncUI();
}else{ // online
// synchronize, but pause for a few seconds
// so that the user can orient themselves
if(dojox.off.sync.autoSync){
window.setTimeout("dojox.off.sync.synchronize()", 1000);
}
}
}
});
// register ourselves for low-level framework events
dojo.connect(dojox.off, "onFrameworkEvent", dojox.off.ui, "_onFrameworkEvent");
// start our magic when the Dojo Offline framework is ready to go
dojo.connect(dojox.off, "onLoad", dojox.off.ui, dojox.off.ui._initialize);
}
if(!dojo._hasResource["dojox.off.offline"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.off.offline"] = true;
dojo.provide("dojox.off.offline");
}