+++ /dev/null
-if(!dojo._hasResource["dojox.storage.WhatWGStorageProvider"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
-dojo._hasResource["dojox.storage.WhatWGStorageProvider"] = true;
-dojo.provide("dojox.storage.WhatWGStorageProvider");
-dojo.require("dojox.storage.Provider");
-dojo.require("dojox.storage.manager");
-
-dojo.declare("dojox.storage.WhatWGStorageProvider", [ dojox.storage.Provider ], {
- // summary:
- // Storage provider that uses WHAT Working Group features in Firefox 2
- // to achieve permanent storage.
- // description:
- // The WHAT WG storage API is documented at
- // http://www.whatwg.org/specs/web-apps/current-work/#scs-client-side
- //
- // You can disable this storage provider with the following djConfig
- // variable:
- // var djConfig = { disableWhatWGStorage: true };
- //
- // Authors of this storage provider-
- // JB Boisseau, jb.boisseau@eutech-ssii.com
- // Brad Neuberg, bkn3@columbia.edu
-
- initialized: false,
-
- _domain: null,
- _available: null,
- _statusHandler: null,
- _allNamespaces: null,
- _storageEventListener: null,
-
- initialize: function(){
- if(dojo.config["disableWhatWGStorage"] == true){
- return;
- }
-
- // get current domain
- // see: https://bugzilla.mozilla.org/show_bug.cgi?id=357323
- this._domain = (location.hostname == "localhost") ? "localhost.localdomain" : location.hostname;
- // console.debug(this._domain);
-
- // indicate that this storage provider is now loaded
- this.initialized = true;
- dojox.storage.manager.loaded();
- },
-
- isAvailable: function(){
- try{
- // see: https://bugzilla.mozilla.org/show_bug.cgi?id=357323
- var myStorage = globalStorage[((location.hostname == "localhost") ? "localhost.localdomain" : location.hostname)];
- }catch(e){
- this._available = false;
- return this._available;
- }
-
- this._available = true;
- return this._available;
- },
-
- put: function(key, value, resultsHandler, namespace){
- if(this.isValidKey(key) == false){
- throw new Error("Invalid key given: " + key);
- }
- namespace = namespace||this.DEFAULT_NAMESPACE;
-
- // get our full key name, which is namespace + key
- key = this.getFullKey(key, namespace);
-
- this._statusHandler = resultsHandler;
-
- // serialize the value;
- // handle strings differently so they have better performance
- if(dojo.isString(value)){
- value = "string:" + value;
- }else{
- value = dojo.toJson(value);
- }
-
- // register for successful storage events.
- var storageListener = dojo.hitch(this, function(evt){
- // remove any old storage event listener we might have added
- // to the window on old put() requests; Firefox has a bug
- // where it can occassionaly go into infinite loops calling
- // our storage event listener over and over -- this is a
- // workaround
- // FIXME: Simplify this into a test case and submit it
- // to Firefox
- window.removeEventListener("storage", storageListener, false);
-
- // indicate we succeeded
- if(resultsHandler){
- resultsHandler.call(null, this.SUCCESS, key);
- }
- });
-
- window.addEventListener("storage", storageListener, false);
-
- // try to store the value
- try{
- var myStorage = globalStorage[this._domain];
- myStorage.setItem(key, value);
- }catch(e){
- // indicate we failed
- this._statusHandler.call(null, this.FAILED, key, e.toString());
- }
- },
-
- get: function(key, namespace){
- if(this.isValidKey(key) == false){
- throw new Error("Invalid key given: " + key);
- }
- namespace = namespace||this.DEFAULT_NAMESPACE;
-
- // get our full key name, which is namespace + key
- key = this.getFullKey(key, namespace);
-
- // sometimes, even if a key doesn't exist, Firefox
- // will return a blank string instead of a null --
- // this _might_ be due to having underscores in the
- // keyname, but I am not sure.
-
- // FIXME: Simplify this bug into a testcase and
- // submit it to Firefox
- var myStorage = globalStorage[this._domain];
- var results = myStorage.getItem(key);
-
- if(results == null || results == ""){
- return null;
- }
-
- results = results.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 = [ this.DEFAULT_NAMESPACE ];
-
- // simply enumerate through our array and save any string
- // that starts with __
- var found = {};
- var myStorage = globalStorage[this._domain];
- var tester = /^__([^_]*)_/;
- for(var i = 0; i < myStorage.length; i++){
- var currentKey = myStorage.key(i);
- if(tester.test(currentKey) == true){
- var currentNS = currentKey.match(tester)[1];
- // have we seen this namespace before?
- if(typeof found[currentNS] == "undefined"){
- found[currentNS] = true;
- results.push(currentNS);
- }
- }
- }
-
- return results;
- },
-
- getKeys: function(namespace){
- namespace = namespace||this.DEFAULT_NAMESPACE;
-
- if(this.isValidKey(namespace) == false){
- throw new Error("Invalid namespace given: " + namespace);
- }
-
- // create a regular expression to test the beginning
- // of our key names to see if they match our namespace;
- // if it is the default namespace then test for the presence
- // of no namespace for compatibility with older versions
- // of dojox.storage
- var namespaceTester;
- if(namespace == this.DEFAULT_NAMESPACE){
- namespaceTester = new RegExp("^([^_]{2}.*)$");
- }else{
- namespaceTester = new RegExp("^__" + namespace + "_(.*)$");
- }
-
- var myStorage = globalStorage[this._domain];
- var keysArray = [];
- for(var i = 0; i < myStorage.length; i++){
- var currentKey = myStorage.key(i);
- if(namespaceTester.test(currentKey) == true){
- // strip off the namespace portion
- currentKey = currentKey.match(namespaceTester)[1];
- keysArray.push(currentKey);
- }
- }
-
- return keysArray;
- },
-
- clear: function(namespace){
- namespace = namespace||this.DEFAULT_NAMESPACE;
-
- if(this.isValidKey(namespace) == false){
- throw new Error("Invalid namespace given: " + namespace);
- }
-
- // create a regular expression to test the beginning
- // of our key names to see if they match our namespace;
- // if it is the default namespace then test for the presence
- // of no namespace for compatibility with older versions
- // of dojox.storage
- var namespaceTester;
- if(namespace == this.DEFAULT_NAMESPACE){
- namespaceTester = new RegExp("^[^_]{2}");
- }else{
- namespaceTester = new RegExp("^__" + namespace + "_");
- }
-
- var myStorage = globalStorage[this._domain];
- var keys = [];
- for(var i = 0; i < myStorage.length; i++){
- if(namespaceTester.test(myStorage.key(i)) == true){
- keys[keys.length] = myStorage.key(i);
- }
- }
-
- dojo.forEach(keys, dojo.hitch(myStorage, "removeItem"));
- },
-
- remove: function(key, namespace){
- // get our full key name, which is namespace + key
- key = this.getFullKey(key, namespace);
-
- var myStorage = globalStorage[this._domain];
- myStorage.removeItem(key);
- },
-
- 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");
- },
-
- getFullKey: function(key, namespace){
- namespace = namespace||this.DEFAULT_NAMESPACE;
-
- if(this.isValidKey(namespace) == false){
- throw new Error("Invalid namespace given: " + namespace);
- }
-
- // don't append a namespace string for the default namespace,
- // for compatibility with older versions of dojox.storage
- if(namespace == this.DEFAULT_NAMESPACE){
- return key;
- }else{
- return "__" + namespace + "_" + key;
- }
- }
-});
-
-dojox.storage.manager.register("dojox.storage.WhatWGStorageProvider",
- new dojox.storage.WhatWGStorageProvider());
-
-}
projects / eow / blobdiff