/* base.js */ (function () { 'use strict'; /* jshint ignore:start */ // Underscore's Template Module // Courtesy of underscorejs.org var _ = (function (_) { _.defaults = function (object) { if (!object) { return object; } for (var argsIndex = 1, argsLength = arguments.length; argsIndex < argsLength; argsIndex++) { var iterable = arguments[argsIndex]; if (iterable) { for (var key in iterable) { if (object[key] == null) { object[key] = iterable[key]; } } } } return object; } // By default, Underscore uses ERB-style template delimiters, change the // following template settings to use alternative delimiters. _.templateSettings = { evaluate : /<%([\s\S]+?)%>/g, interpolate : /<%=([\s\S]+?)%>/g, escape : /<%-([\s\S]+?)%>/g }; // When customizing `templateSettings`, if you don't want to define an // interpolation, evaluation or escaping regex, we need one that is // guaranteed not to match. var noMatch = /(.)^/; // Certain characters need to be escaped so that they can be put into a // string literal. var escapes = { "'": "'", '\\': '\\', '\r': 'r', '\n': 'n', '\t': 't', '\u2028': 'u2028', '\u2029': 'u2029' }; var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; // JavaScript micro-templating, similar to John Resig's implementation. // Underscore templating handles arbitrary delimiters, preserves whitespace, // and correctly escapes quotes within interpolated code. _.template = function(text, data, settings) { var render; settings = _.defaults({}, settings, _.templateSettings); console.log(text, data) // Combine delimiters into one regular expression via alternation. var matcher = new RegExp([ (settings.escape || noMatch).source, (settings.interpolate || noMatch).source, (settings.evaluate || noMatch).source ].join('|') + '|$', 'g'); // Compile the template source, escaping string literals appropriately. var index = 0; var source = "__p+='"; text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { source += text.slice(index, offset) .replace(escaper, function(match) { return '\\' + escapes[match]; }); if (escape) { source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; } if (interpolate) { source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; } if (evaluate) { source += "';\n" + evaluate + "\n__p+='"; } index = offset + match.length; return match; }); source += "';\n"; // If a variable is not specified, place data values in local scope. if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; source = "var __t,__p='',__j=Array.prototype.join," + "print=function(){__p+=__j.call(arguments,'');};\n" + source + "return __p;\n"; try { render = new Function(settings.variable || 'obj', '_', source); } catch (e) { e.source = source; throw e; } if (data) return render(data, _); var template = function(data) { return render.call(this, data, _); }; // Provide the compiled function source as a convenience for precompilation. template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; return template; }; return _; })({}); })(); /** helpers.js **/ (function (window) { 'use strict'; // Get element(s) by CSS selector: window.qs = function (selector, scope) { return (scope || document).querySelector(selector); }; window.qsa = function (selector, scope) { return (scope || document).querySelectorAll(selector); }; // addEventListener wrapper: window.$on = function (target, type, callback, useCapture) { target.addEventListener(type, callback, !!useCapture); }; // Attach a handler to event for all elements that match the selector, // now or in the future, based on a root element window.$delegate = function (target, selector, type, handler) { function dispatchEvent(event) { var targetElement = event.target; var potentialElements = window.qsa(selector, target); var hasMatch = Array.prototype.indexOf.call(potentialElements, targetElement) >= 0; if (hasMatch) { handler.call(targetElement, event); } } // https://developer.mozilla.org/en-US/docs/Web/Events/blur var useCapture = type === 'blur' || type === 'focus'; window.$on(target, type, dispatchEvent, useCapture); }; // Find the element's parent with the given tag name: // $parent(qs('a'), 'div'); window.$parent = function (element, tagName) { if (!element.parentNode) { return; } if (element.parentNode.tagName.toLowerCase() === tagName.toLowerCase()) { return element.parentNode; } return window.$parent(element.parentNode, tagName); }; // Allow for looping on nodes by chaining: // qsa('.foo').forEach(function () {}) NodeList.prototype.forEach = Array.prototype.forEach; })(window); /* store.js */ (function (window) { 'use strict'; /** * 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; window.todoStorage = {}; if (!window.todoStorage[name]) { var data = { todos: [] }; window.todoStorage[name] = JSON.stringify(data); } callback.call(this, JSON.parse(window.todoStorage[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(window.todoStorage[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(window.todoStorage[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(window.todoStorage[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; } } window.todoStorage[this._dbName] = JSON.stringify(data); callback.call(this, todos); } else { // Generate an ID updateData.id = new Date().getTime(); todos.push(updateData); window.todoStorage[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(window.todoStorage[this._dbName]); var todos = data.todos; for (var i = 0; i < todos.length; i++) { if (todos[i].id == id) { todos.splice(i, 1); break; } } window.todoStorage[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: []}; window.todoStorage[this._dbName] = JSON.stringify(data); callback.call(this, data.todos); }; // Export to window window.app = window.app || {}; window.app.Store = Store; })(window); /* model.js */ (function (window) { 'use strict'; /** * Creates a new Model instance and hooks up the storage. * * @constructor * @param {object} storage A reference to the client side storage class */ function Model(storage) { this.storage = storage; } /** * Creates a new todo model * * @param {string} [title] The title of the task * @param {function} [callback] The callback to fire after the model is created */ Model.prototype.create = function (title, callback) { title = title || ''; callback = callback || function () {}; var newItem = { title: title.trim(), completed: false }; this.storage.save(newItem, callback); }; /** * Finds and returns a model in storage. If no query is given it'll simply * return everything. If you pass in a string or number it'll look that up as * the ID of the model to find. Lastly, you can pass it an object to match * against. * * @param {string|number|object} [query] A query to match models against * @param {function} [callback] The callback to fire after the model is found * * @example * model.read(1, func); // Will find the model with an ID of 1 * model.read('1'); // Same as above * //Below will find a model with foo equalling bar and hello equalling world. * model.read({ foo: 'bar', hello: 'world' }); */ Model.prototype.read = function (query, callback) { var queryType = typeof query; callback = callback || function () {}; if (queryType === 'function') { callback = query; return this.storage.findAll(callback); } else if (queryType === 'string' || queryType === 'number') { query = parseInt(query, 10); this.storage.find({ id: query }, callback); } else { this.storage.find(query, callback); } }; /** * Updates a model by giving it an ID, data to update, and a callback to fire when * the update is complete. * * @param {number} id The id of the model to update * @param {object} data The properties to update and their new value * @param {function} callback The callback to fire when the update is complete. */ Model.prototype.update = function (id, data, callback) { this.storage.save(data, callback, id); }; /** * Removes a model from storage * * @param {number} id The ID of the model to remove * @param {function} callback The callback to fire when the removal is complete. */ Model.prototype.remove = function (id, callback) { this.storage.remove(id, callback); }; /** * WARNING: Will remove ALL data from storage. * * @param {function} callback The callback to fire when the storage is wiped. */ Model.prototype.removeAll = function (callback) { this.storage.drop(callback); }; /** * Returns a count of all todos */ Model.prototype.getCount = function (callback) { var todos = { active: 0, completed: 0, total: 0 }; this.storage.findAll(function (data) { data.forEach(function (todo) { if (todo.completed) { todos.completed++; } else { todos.active++; } todos.total++; }); callback(todos); }); }; // Export to window window.app = window.app || {}; window.app.Model = Model; })(window); /* template.js */ (function (window) { 'use strict'; var htmlEscapes = { '&': '&', '<': '<', '>': '>', '"': '"', '\'': ''', '`': '`' }; var escapeHtmlChar = function (chr) { return htmlEscapes[chr]; }; var reUnescapedHtml = /[&<>"'`]/g; var reHasUnescapedHtml = new RegExp(reUnescapedHtml.source); var escape = function (string) { return (string && reHasUnescapedHtml.test(string)) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string; }; /** * Sets up defaults for all the Template methods such as a default template * * @constructor */ function Template() { this.defaultTemplate = '
  • ' + '
    ' + '' + '' + '' + '
    ' + '
  • '; } /** * Creates an
  • HTML string and returns it for placement in your app. * * NOTE: In real life you should be using a templating engine such as Mustache * or Handlebars, however, this is a vanilla JS example. * * @param {object} data The object containing keys you want to find in the * template to replace. * @returns {string} HTML String of an
  • element * * @example * view.show({ * id: 1, * title: "Hello World", * completed: 0, * }); */ Template.prototype.show = function (data) { var i, l; var view = ''; for (i = 0, l = data.length; i < l; i++) { var template = this.defaultTemplate; var completed = ''; var checked = ''; if (data[i].completed) { completed = 'completed'; checked = 'checked'; } template = template.replace('{{id}}', data[i].id); template = template.replace('{{title}}', escape(data[i].title)); template = template.replace('{{completed}}', completed); template = template.replace('{{checked}}', checked); view = view + template; } return view; }; /** * Displays a counter of how many to dos are left to complete * * @param {number} activeTodos The number of active todos. * @returns {string} String containing the count */ Template.prototype.itemCounter = function (activeTodos) { var plural = activeTodos === 1 ? '' : 's'; return '' + activeTodos + ' item' + plural + ' left'; }; /** * Updates the text within the "Clear completed" button * * @param {[type]} completedTodos The number of completed todos. * @returns {string} String containing the count */ Template.prototype.clearCompletedButton = function (completedTodos) { if (completedTodos > 0) { return 'Clear completed'; } else { return ''; } }; // Export to window window.app = window.app || {}; window.app.Template = Template; })(window); /* view.js */ (function (window) { 'use strict'; /** * View that abstracts away the browser's DOM completely. * It has two simple entry points: * * - bind(eventName, handler) * Takes a todo application event and registers the handler * - render(command, parameterObject) * Renders the given command with the options */ function View(template) { this.template = template; this.ENTER_KEY = 13; this.ESCAPE_KEY = 27; this.$todoList = qs('.todo-list'); this.$todoItemCounter = qs('.todo-count'); this.$clearCompleted = qs('.clear-completed'); this.$main = qs('.main'); this.$footer = qs('.footer'); this.$toggleAll = qs('.toggle-all'); this.$newTodo = qs('.new-todo'); this.$toggleFullscreen = qs('.toggle-fullscreen') } View.prototype._removeItem = function (id) { var elem = qs('[data-id="' + id + '"]'); if (elem) { this.$todoList.removeChild(elem); } }; View.prototype._clearCompletedButton = function (completedCount, visible) { this.$clearCompleted.innerHTML = this.template.clearCompletedButton(completedCount); this.$clearCompleted.style.display = visible ? 'block' : 'none'; }; View.prototype._setFilter = function (currentPage) { qs('.filters .selected').className = ''; qs('.filters [href="#/' + currentPage + '"]').className = 'selected'; }; View.prototype._elementComplete = function (id, completed) { var listItem = qs('[data-id="' + id + '"]'); if (!listItem) { return; } listItem.className = completed ? 'completed' : ''; // In case it was toggled from an event and not by clicking the checkbox qs('input', listItem).checked = completed; }; View.prototype._editItem = function (id, title) { var listItem = qs('[data-id="' + id + '"]'); if (!listItem) { return; } listItem.className = listItem.className + ' editing'; var input = document.createElement('input'); input.className = 'edit'; listItem.appendChild(input); input.focus(); input.value = title; }; View.prototype._editItemDone = function (id, title) { var listItem = qs('[data-id="' + id + '"]'); if (!listItem) { return; } var input = qs('input.edit', listItem); listItem.removeChild(input); listItem.className = listItem.className.replace('editing', ''); qsa('label', listItem).forEach(function (label) { label.textContent = title; }); }; View.prototype.render = function (viewCmd, parameter) { var self = this; var viewCommands = { showEntries: function () { self.$todoList.innerHTML = self.template.show(parameter); }, removeItem: function () { self._removeItem(parameter); }, updateElementCount: function () { self.$todoItemCounter.innerHTML = self.template.itemCounter(parameter); }, clearCompletedButton: function () { self._clearCompletedButton(parameter.completed, parameter.visible); }, contentBlockVisibility: function () { self.$main.style.display = self.$footer.style.display = parameter.visible ? 'block' : 'none'; }, toggleAll: function () { self.$toggleAll.checked = parameter.checked; }, setFilter: function () { self._setFilter(parameter); }, clearNewTodo: function () { self.$newTodo.value = ''; }, elementComplete: function () { self._elementComplete(parameter.id, parameter.completed); }, editItem: function () { self._editItem(parameter.id, parameter.title); }, editItemDone: function () { self._editItemDone(parameter.id, parameter.title); } }; viewCommands[viewCmd](); }; View.prototype._itemId = function (element) { var li = $parent(element, 'li'); return parseInt(li.dataset.id, 10); }; View.prototype._bindItemEditDone = function (handler) { var self = this; $delegate(self.$todoList, 'li .edit', 'blur', function () { if (!this.dataset.iscanceled) { handler({ id: self._itemId(this), title: this.value }); } }); $delegate(self.$todoList, 'li .edit', 'keypress', function (event) { if (event.keyCode === self.ENTER_KEY) { // Remove the cursor from the input when you hit enter just like if it // were a real form this.blur(); } }); }; View.prototype._bindItemEditCancel = function (handler) { var self = this; $delegate(self.$todoList, 'li .edit', 'keyup', function (event) { if (event.keyCode === self.ESCAPE_KEY) { this.dataset.iscanceled = true; this.blur(); handler({id: self._itemId(this)}); } }); }; View.prototype.bind = function (event, handler) { var self = this; if (event === 'newTodo') { $on(self.$newTodo, 'keyup', function (event) { if (event.keyCode === self.ENTER_KEY) { handler(self.$newTodo.value); } }); } else if (event === 'removeCompleted') { $on(self.$clearCompleted, 'click', function () { handler(); }); } else if (event === 'toggleAll') { $on(self.$toggleAll, 'click', function () { handler({completed: this.checked}); }); } else if (event === 'itemEdit') { $delegate(self.$todoList, 'li label', 'dblclick', function () { handler({id: self._itemId(this)}); }); } else if (event === 'itemRemove') { $delegate(self.$todoList, '.destroy', 'click', function () { handler({id: self._itemId(this)}); }); } else if (event === 'itemToggle') { $delegate(self.$todoList, '.toggle', 'click', function () { handler({ id: self._itemId(this), completed: this.checked }); }); } else if (event === 'itemEditDone') { self._bindItemEditDone(handler); } else if (event === 'itemEditCancel') { self._bindItemEditCancel(handler); } else if (event === 'toggleFullscreen') { $on(self.$toggleFullscreen, 'click', function (e) { e.preventDefault() handler(); }); } }; // Export to window window.app = window.app || {}; window.app.View = View; }(window)); /* controller.js */ (function (window) { 'use strict'; /** * Takes a model and view and acts as the controller between them * * @constructor * @param {object} model The model instance * @param {object} view The view instance */ function Controller(model, view) { var self = this; self.model = model; self.view = view; self.view.bind('newTodo', function (title) { self.addItem(title); window.pywebview.api.addItem(title) }); self.view.bind('itemEdit', function (item) { self.editItem(item.id); }); self.view.bind('itemEditDone', function (item) { self.editItemSave(item.id, item.title); window.pywebview.api.editItem(item) }); self.view.bind('itemEditCancel', function (item) { self.editItemCancel(item.id); }); self.view.bind('itemRemove', function (item) { self.removeItem(item.id); window.pywebview.api.removeItem(item) }); self.view.bind('itemToggle', function (item) { self.toggleComplete(item.id, item.completed); window.pywebview.api.toggleItem(item) }); self.view.bind('removeCompleted', function () { self.removeCompletedItems(); }); self.view.bind('toggleAll', function (status) { self.toggleAll(status.completed); }); self.view.bind('toggleFullscreen', function () { window.pywebview.api.toggleFullscreen() }); } /** * Loads and initialises the view * * @param {string} '' | 'active' | 'completed' */ Controller.prototype.setView = function (locationHash) { var route = locationHash.split('/')[1]; var page = route || ''; this._updateFilterState(page); }; /** * An event to fire on load. Will get all items and display them in the * todo-list */ Controller.prototype.showAll = function () { var self = this; self.model.read(function (data) { self.view.render('showEntries', data); }); }; /** * Renders all active tasks */ Controller.prototype.showActive = function () { var self = this; self.model.read({ completed: false }, function (data) { self.view.render('showEntries', data); }); }; /** * Renders all completed tasks */ Controller.prototype.showCompleted = function () { var self = this; self.model.read({ completed: true }, function (data) { self.view.render('showEntries', data); }); }; /** * An event to fire whenever you want to add an item. Simply pass in the event * object and it'll handle the DOM insertion and saving of the new item. */ Controller.prototype.addItem = function (title) { var self = this; if (title.trim() === '') { return; } self.model.create(title, function () { self.view.render('clearNewTodo'); self._filter(true); }); }; /* * Triggers the item editing mode. */ Controller.prototype.editItem = function (id) { var self = this; self.model.read(id, function (data) { self.view.render('editItem', {id: id, title: data[0].title}); }); }; /* * Finishes the item editing mode successfully. */ Controller.prototype.editItemSave = function (id, title) { var self = this; title = title.trim(); if (title.length !== 0) { self.model.update(id, {title: title}, function () { self.view.render('editItemDone', {id: id, title: title}); }); } else { self.removeItem(id); } }; /* * Cancels the item editing mode. */ Controller.prototype.editItemCancel = function (id) { var self = this; self.model.read(id, function (data) { self.view.render('editItemDone', {id: id, title: data[0].title}); }); }; /** * By giving it an ID it'll find the DOM element matching that ID, * remove it from the DOM and also remove it from storage. * * @param {number} id The ID of the item to remove from the DOM and * storage */ Controller.prototype.removeItem = function (id) { var self = this; self.model.remove(id, function () { self.view.render('removeItem', id); }); self._filter(); }; /** * Will remove all completed items from the DOM and storage. */ Controller.prototype.removeCompletedItems = function () { var self = this; self.model.read({ completed: true }, function (data) { data.forEach(function (item) { self.removeItem(item.id); }); }); self._filter(); }; /** * Give it an ID of a model and a checkbox and it will update the item * in storage based on the checkbox's state. * * @param {number} id The ID of the element to complete or uncomplete * @param {object} checkbox The checkbox to check the state of complete * or not * @param {boolean|undefined} silent Prevent re-filtering the todo items */ Controller.prototype.toggleComplete = function (id, completed, silent) { var self = this; self.model.update(id, { completed: completed }, function () { self.view.render('elementComplete', { id: id, completed: completed }); }); if (!silent) { self._filter(); } }; /** * Will toggle ALL checkboxes' on/off state and completeness of models. * Just pass in the event object. */ Controller.prototype.toggleAll = function (completed) { var self = this; self.model.read({ completed: !completed }, function (data) { data.forEach(function (item) { self.toggleComplete(item.id, completed, true); }); }); self._filter(); }; /** * Updates the pieces of the page which change depending on the remaining * number of todos. */ Controller.prototype._updateCount = function () { var self = this; self.model.getCount(function (todos) { self.view.render('updateElementCount', todos.active); self.view.render('clearCompletedButton', { completed: todos.completed, visible: todos.completed > 0 }); self.view.render('toggleAll', {checked: todos.completed === todos.total}); self.view.render('contentBlockVisibility', {visible: todos.total > 0}); }); }; /** * Re-filters the todo items, based on the active route. * @param {boolean|undefined} force forces a re-painting of todo items. */ Controller.prototype._filter = function (force) { var activeRoute = this._activeRoute.charAt(0).toUpperCase() + this._activeRoute.substr(1); // Update the elements on the page, which change with each completed todo this._updateCount(); // If the last active route isn't "All", or we're switching routes, we // re-create the todo item elements, calling: // this.show[All|Active|Completed](); if (force || this._lastActiveRoute !== 'All' || this._lastActiveRoute !== activeRoute) { this['show' + activeRoute](); } this._lastActiveRoute = activeRoute; }; /** * Simply updates the filter nav's selected states */ Controller.prototype._updateFilterState = function (currentPage) { // Store a reference to the active route, allowing us to re-filter todo // items as they are marked complete or incomplete. this._activeRoute = currentPage; if (currentPage === '') { this._activeRoute = 'All'; } this._filter(); this.view.render('setFilter', currentPage); }; // Export to window window.app = window.app || {}; window.app.Controller = Controller; })(window); /** app.js **/ (function () { 'use strict'; /** * Sets up a brand new Todo list. * * @param {string} name The name of your new to do list. */ function Todo(name) { this.storage = new app.Store(name); this.model = new app.Model(this.storage); this.template = new app.Template(); this.view = new app.View(this.template); this.controller = new app.Controller(this.model, this.view); } var todo = new Todo('todos-vanillajs'); function setView() { todo.controller.setView(document.location.hash); } $on(window, 'load', setView); $on(window, 'hashchange', setView); })();