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Diffstat (limited to '')
-rw-r--r-- | third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/vanillajs/js/store.js | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/vanillajs/js/store.js b/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/vanillajs/js/store.js new file mode 100644 index 0000000000..7b28ccdfa7 --- /dev/null +++ b/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/vanillajs/js/store.js @@ -0,0 +1,144 @@ +/*jshint eqeqeq:false */ +(function (window) { + 'use strict'; + + var MemoryStorage = {}; + var ID = 1; + + /** + * Creates a new client side storage object and will create an empty + * collection if no collection already exists. + * + * @param {string} name The name of our DB we want to use + * @param {function} callback Our fake DB uses callbacks because in + * real life you probably would be making AJAX calls + */ + function Store(name, callback) { + callback = callback || function () {}; + + this._dbName = name; + + if (!MemoryStorage[name]) { + var data = { + todos: [] + }; + + MemoryStorage[name] = JSON.stringify(data); + } + + callback.call(this, JSON.parse(MemoryStorage[name])); + } + + /** + * Finds items based on a query given as a JS object + * + * @param {object} query The query to match against (i.e. {foo: 'bar'}) + * @param {function} callback The callback to fire when the query has + * completed running + * + * @example + * db.find({foo: 'bar', hello: 'world'}, function (data) { + * // data will return any items that have foo: bar and + * // hello: world in their properties + * }); + */ + Store.prototype.find = function (query, callback) { + if (!callback) { + return; + } + + var todos = JSON.parse(MemoryStorage[this._dbName]).todos; + + callback.call(this, todos.filter(function (todo) { + for (var q in query) { + if (query[q] !== todo[q]) { + return false; + } + } + return true; + })); + }; + + /** + * Will retrieve all data from the collection + * + * @param {function} callback The callback to fire upon retrieving data + */ + Store.prototype.findAll = function (callback) { + callback = callback || function () {}; + callback.call(this, JSON.parse(MemoryStorage[this._dbName]).todos); + }; + + /** + * Will save the given data to the DB. If no item exists it will create a new + * item, otherwise it'll simply update an existing item's properties + * + * @param {object} updateData The data to save back into the DB + * @param {function} callback The callback to fire after saving + * @param {number} id An optional param to enter an ID of an item to update + */ + Store.prototype.save = function (updateData, callback, id) { + var data = JSON.parse(MemoryStorage[this._dbName]); + var todos = data.todos; + + callback = callback || function () {}; + + // If an ID was actually given, find the item and update each property + if (id) { + for (var i = 0; i < todos.length; i++) { + if (todos[i].id === id) { + for (var key in updateData) { + todos[i][key] = updateData[key]; + } + break; + } + } + + MemoryStorage[this._dbName] = JSON.stringify(data); + callback.call(this, todos); + } else { + // Generate an ID + updateData.id = ID++; + + todos.push(updateData); + MemoryStorage[this._dbName] = JSON.stringify(data); + callback.call(this, [updateData]); + } + }; + + /** + * Will remove an item from the Store based on its ID + * + * @param {number} id The ID of the item you want to remove + * @param {function} callback The callback to fire after saving + */ + Store.prototype.remove = function (id, callback) { + var data = JSON.parse(MemoryStorage[this._dbName]); + var todos = data.todos; + + for (var i = 0; i < todos.length; i++) { + if (todos[i].id == id) { + todos.splice(i, 1); + break; + } + } + + MemoryStorage[this._dbName] = JSON.stringify(data); + callback.call(this, todos); + }; + + /** + * Will drop all storage and start fresh + * + * @param {function} callback The callback to fire after dropping the data + */ + Store.prototype.drop = function (callback) { + var data = {todos: []}; + MemoryStorage[this._dbName] = JSON.stringify(data); + callback.call(this, data.todos); + }; + + // Export to window + window.app = window.app || {}; + window.app.Store = Store; +})(window); |