Remove unused localStorage adapter
And remove various stray references to localStorage // FREEBIEpull/749/head
lilia
10 years ago
parent
ff3b23e452
commit
c79a917bbe
@ -1,262 +0,0 @@
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/**
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* Backbone localStorage Adapter
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* Version 1.1.14
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*
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* https://github.com/jeromegn/Backbone.localStorage
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*/
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(function (root, factory) {
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if (typeof exports === 'object' && typeof require === 'function') {
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module.exports = factory(require("backbone"));
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} else if (typeof define === "function" && define.amd) {
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// AMD. Register as an anonymous module.
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define(["backbone"], function(Backbone) {
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// Use global variables if the locals are undefined.
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return factory(Backbone || root.Backbone);
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});
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} else {
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factory(Backbone);
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}
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}(this, function(Backbone) {
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// A simple module to replace `Backbone.sync` with *localStorage*-based
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// persistence. Models are given GUIDS, and saved into a JSON object. Simple
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// as that.
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// Generate four random hex digits.
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function S4() {
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return (((1+Math.random())*0x10000)|0).toString(16).substring(1);
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};
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// Generate a pseudo-GUID by concatenating random hexadecimal.
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function guid() {
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return (S4()+S4()+"-"+S4()+"-"+S4()+"-"+S4()+"-"+S4()+S4()+S4());
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};
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function isObject(item) {
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return item === Object(item);
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}
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function contains(array, item) {
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var i = array.length;
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while (i--) if (array[i] === item) return true;
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return false;
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}
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function extend(obj, props) {
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for (var key in props) obj[key] = props[key]
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return obj;
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}
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function result(object, property) {
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if (object == null) return void 0;
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var value = object[property];
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return (typeof value === 'function') ? object[property]() : value;
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}
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// Our Store is represented by a single JS object in *localStorage*. Create it
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// with a meaningful name, like the name you'd give a table.
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// window.Store is deprectated, use Backbone.LocalStorage instead
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Backbone.LocalStorage = window.Store = function(name, serializer) {
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if( !this.localStorage ) {
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throw "Backbone.localStorage: Environment does not support localStorage."
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}
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this.name = name;
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this.serializer = serializer || {
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serialize: function(item) {
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return isObject(item) ? JSON.stringify(item) : item;
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},
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// fix for "illegal access" error on Android when JSON.parse is passed null
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deserialize: function (data) {
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return data && JSON.parse(data);
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}
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};
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var store = this.localStorage().getItem(this.name);
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this.records = (store && store.split(",")) || [];
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};
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extend(Backbone.LocalStorage.prototype, {
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// Save the current state of the **Store** to *localStorage*.
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save: function() {
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var store = this.localStorage().getItem(this.name);
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this.records = _.union(this.records, store && store.split(","));
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this.localStorage().setItem(this.name, this.records.join(","));
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},
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// Add a model, giving it a (hopefully)-unique GUID, if it doesn't already
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// have an id of it's own.
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create: function(model) {
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if (!model.id && model.id !== 0) {
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model.id = guid();
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model.set(model.idAttribute, model.id);
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}
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this.localStorage().setItem(this._itemName(model.id), this.serializer.serialize(model));
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this.records.push(model.id.toString());
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this.save();
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return this.find(model);
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},
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// Update a model by replacing its copy in `this.data`.
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update: function(model) {
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this.localStorage().setItem(this._itemName(model.id), this.serializer.serialize(model));
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var modelId = model.id.toString();
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if (!contains(this.records, modelId)) {
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this.records.push(modelId);
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this.save();
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}
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return this.find(model);
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},
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// Retrieve a model from `this.data` by id.
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find: function(model) {
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var store = this.localStorage().getItem(this.name);
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this.records = (store && store.split(",")) || [];
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return this.serializer.deserialize(this.localStorage().getItem(this._itemName(model.id)));
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},
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// Return the array of all models currently in storage.
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findAll: function() {
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var store = this.localStorage().getItem(this.name);
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this.records = (store && store.split(",")) || [];
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var result = [];
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for (var i = 0, id, data; i < this.records.length; i++) {
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id = this.records[i];
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data = this.serializer.deserialize(this.localStorage().getItem(this._itemName(id)));
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if (data != null) result.push(data);
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}
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return result;
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},
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// Delete a model from `this.data`, returning it.
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destroy: function(model) {
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this.localStorage().removeItem(this._itemName(model.id));
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var modelId = model.id.toString();
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for (var i = 0, id; i < this.records.length; i++) {
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if (this.records[i] === modelId) {
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this.records.splice(i, 1);
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}
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}
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this.save();
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return model;
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},
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localStorage: function() {
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return localStorage;
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},
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// Clear localStorage for specific collection.
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_clear: function() {
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var local = this.localStorage(),
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itemRe = new RegExp("^" + this.name + "-");
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// Remove id-tracking item (e.g., "foo").
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local.removeItem(this.name);
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// Match all data items (e.g., "foo-ID") and remove.
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for (var k in local) {
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if (itemRe.test(k)) {
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local.removeItem(k);
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}
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}
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this.records.length = 0;
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},
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// Size of localStorage.
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_storageSize: function() {
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return this.localStorage().length;
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},
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_itemName: function(id) {
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return this.name+"-"+id;
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}
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});
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// localSync delegate to the model or collection's
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// *localStorage* property, which should be an instance of `Store`.
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// window.Store.sync and Backbone.localSync is deprecated, use Backbone.LocalStorage.sync instead
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Backbone.LocalStorage.sync = window.Store.sync = Backbone.localSync = function(method, model, options) {
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var store = result(model, 'localStorage') || result(model.collection, 'localStorage');
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var resp, errorMessage;
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//If $ is having Deferred - use it.
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var syncDfd = Backbone.$ ?
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(Backbone.$.Deferred && Backbone.$.Deferred()) :
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(Backbone.Deferred && Backbone.Deferred());
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try {
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switch (method) {
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case "read":
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resp = model.id != undefined ? store.find(model) : store.findAll();
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break;
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case "create":
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resp = store.create(model);
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break;
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case "update":
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resp = store.update(model);
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break;
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case "delete":
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resp = store.destroy(model);
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break;
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}
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} catch(error) {
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if (error.code === 22 && store._storageSize() === 0)
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errorMessage = "Private browsing is unsupported";
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else
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errorMessage = error.message;
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}
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if (resp) {
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if (options && options.success) {
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if (Backbone.VERSION === "0.9.10") {
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options.success(model, resp, options);
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} else {
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options.success(resp);
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}
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}
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if (syncDfd) {
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syncDfd.resolve(resp);
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}
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} else {
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errorMessage = errorMessage ? errorMessage
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: "Record Not Found";
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if (options && options.error)
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if (Backbone.VERSION === "0.9.10") {
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options.error(model, errorMessage, options);
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} else {
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options.error(errorMessage);
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}
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if (syncDfd)
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syncDfd.reject(errorMessage);
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}
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// add compatibility with $.ajax
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// always execute callback for success and error
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if (options && options.complete) options.complete(resp);
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return syncDfd && syncDfd.promise();
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};
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Backbone.ajaxSync = Backbone.sync;
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Backbone.getSyncMethod = function(model) {
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if(model.localStorage || (model.collection && model.collection.localStorage)) {
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return Backbone.localSync;
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}
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return Backbone.ajaxSync;
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};
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// Override 'Backbone.sync' to default to localSync,
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// the original 'Backbone.sync' is still available in 'Backbone.ajaxSync'
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Backbone.sync = function(method, model, options) {
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return Backbone.getSyncMethod(model).apply(this, [method, model, options]);
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};
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return Backbone.LocalStorage;
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}));
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