8/30/2016 - 3:20 PM

TodoMVC Backbone

import Backbone from 'backbone';
import TodoItemView from './todoItemView.js';

export default class TodoListView extends Backbone.View {
    constructor(options){
    	super({
            tagName: "ul",
            className: "todo-list",
            collection: options.collection
        });
    }
    
	addTodo(todo){
        console.log("addTodo", todo);
        let view = new TodoItemView({ model: todo });
        this.$el.append(view.$el);
    }
    
    initialize(){
        this.listenTo(this.collection, 'add', this.addTodo);
        this.render();
    }
    
    render(){
        this.$el.html();
        this.renderTodos();
        return this;
    }
    
    renderTodos(){
        this.collection.forEach((todo) => {
           this.addTodo(todo); 
        });
    }
}

todoItemView.js

import Backbone from 'backbone';

export default class TodoItemView extends Backbone.View {
	constructor(options){
        super({
        	tagName: "li",
            model: options.model
        });
    }
    
    events(){
        return {
            "click input.toggle": 'toggleComplete',
            "dbclick label": 'edit',
            "click button.destroy": 'delete'
        };
    }

    toggleComplete() {
      this.model.toggle();
    }
    
    // edit(){
    //     this.$el.addClass('')
    // }
    
    delete(){
        this.model.destroy();
    }
    
    initialize(){
        this.listenTo(this.model, 'change', this.render);
        this.listenTo(this.model, 'destroy', this.remove);
        this.render();
    }
    
    template(){
        let title = this.model.get('title');
        let completed = this.model.get('completed');
        let checked = completed ? 'checked="checked"' : '';
        return `
<div class="view">
	<input class="toggle" type="checkbox" ${checked} />
	<label>${title}</label>
	<button class="destroy"></button>
</div>
`;
    }
    
    render(){
        this.$el.html(this.template());
        return this;
    }
}

todoColletion.js

import Backbone from './backbone.js';
import TodoModel from './todoModel.js';
import Storage from "./storage.js";
import Utils from "./utils";
import {COMPLETED, TITLE} from './constants.js';

export default class TodoCollection extends Backbone.Collection {
    constructor(key){
        super({
            model: TodoModel
        });
    }
    
    set Todos(models){
        this.set(models);
    }
    
    get Todos(){
        return this.chain().value();
    }
    
    completed(){
        return this.chain().filter(function(todo){
            return todo.get(COMPLETED);
        });
    }
    
    remaining(){
        return this.chain().filter(function(todo){
            return !todo.get(COMPLETED);
        });
    }
    
    comparator(){
        return 'order';
    }
    
    activeTodoCount(){
    	return this.chain().reduce(function (accum, todo) {
			return todo.completed ? accum : accum + 1;
		}, 0);
    }
    
    completedCount(){
        return this.chain().length - this.activeTodoCount();
    }
    
	toggleAll(checked) {
		this.chain().map(function (todo) {
			todo.set(COMPLETED, checked);
		});
	}

	toggle(todoToToggle) {
		this.get(todoToToggle).set(COMPLETED, true);
	}

	clearCompleted() {
		this.chain().map(function (todo) {
			if(todo.get(COMPLETED)){
                todo.destroy();
            }
		});
	}
}

todoCollection.js

import Backbone from 'backbone.js';

class TodoModel extends Backbone.Model {
    defaults(){
        return {
          	title: '',
            completed: false
        };
    }
    
    toggle(){
        let value = this.get('completed');
        this.set({completed: !value});
    }
}

export default class TodoCollection extends Backbone.Collection {
    constructor(){
        super(null, {
            model: TodoModel
        });
    }
    
    get Todos(){
        return this.chain().value();
    }
    
    completed(){
        return this.chain().filter(function(todo){
            return todo.get('completed');
        });
    }
    
    remaining(){
        return this.chain().filter(function(todo){
            return !todo.get('completed');
        });
    }
    
    activeTodoCount(){
    	return this.chain().reduce(function (accum, todo) {
			return todo.get('completed') ? accum : accum + 1;
		}, 0);
    }
    
    completedCount(){
        return this.chain().length - this.activeTodoCount();
    }
    
	toggleAll(completed) {
		this.chain().map(function (todo) {
			todo.set({ completed: completed });
		});
	}

	toggle(todoToToggle) {
		this.get(todoToToggle).set({ completed: true });
	}

	clearCompleted() {
		this.chain().map(function (todo) {
			if(todo.get('completed')){
                todo.destroy();
            }
		});
	}
    
    // Override Backbone.Collection.create for local storage
    create(attrs, options){
        console.log("create", attrs);
        let newTodo = new TodoModel(attrs);
        this.add(newTodo);
    }
}

router.js

import Backbone from './backbone.js';

const routes = {
    "*filter": "setFilter"
};

export default class Router extends Backbone.Router {
    constructor(app){
        super({routes: routes});
        this.app = app;
        Backbone.history.start();
    }
    
    setFilter(param){
        this.app.todoFilter(param || '');
    }
}

mainSectionView.js

import Backbone from 'backbone';
import TodoListView from './todoListView.js';

export default class MainSectionView extends Backbone.View {
    constructor(options){
        super({
            tagName: "section",
            className: "main",
            collection: options.collection
        });
    }
    
    initialize(){
        this.render();
    }
    
    render(){
        this.$el.html(`<input class="toggle-all" type="checkbox"><label for="toggle-all">Mark all as complete</label>`);
        let todoList = new TodoListView({ collection: this.collection });
        this.$el.append(todoList.$el);
        return this;
    }
}

index.js

import $ from 'jquery';
import AppRoot from "./appRoot.js";

import './base.css'
import './app.css'

window.$ = $;

function render() {
    $(() => {
        new AppRoot(); 
	});
}

render();

export function __render(){ ///this tells the hot reloading engine to do its magic
    render();
}

headerView.js

import Backbone from 'backbone';

const ENTER_KEY = 13;

export default class HeaderView extends Backbone.View {
    constructor(options){
    	super({
            tagName: "header",
            className: "header",
            collection: options.collection
        });
    }
    
	events(){
    	return {
      		"keypress .new-todo":  "createOnEnter"
    	};
	}
    
    createOnEnter(e) {
        if (e.keyCode != ENTER_KEY) return;
        if (!this.$('input').val()) return;
        
        this.collection.create({title: this.$('input').val(), completed: false});
        this.$('input').val('');
    }
    
    initialize(){
        this.render();
    }
    
    render(){
        this.$el.html(`<h1>Todos</h1><input class="new-todo" type="text" placeholder="What needs to be done?" autofocus>`);
        return this;
    }
}

footerView.js

import Backbone from 'backbone';
import ClearButton from './clearButton.js';
import FilterView from './filterView.js';

export default class FooterView extends Backbone.View {
    constructor(){
        super({
            tagName: "footer",
            className: "footer"
        });
    }
    
    initialize(){
        this.render();
    }
    
    template(){
        let numRemain = 0;
        let items = numRemain > 1 ? 'items' : 'item';
        return `<span class="todo-count"><strong>${numRemain}</strong> ${items} left</span>`;
    }
    
    render(){
        this.$el.html(this.template());
        let filterView = new FilterView();
        this.$el.append(filterView.$el);
        let clearButton = new ClearButton();
        this.$el.append(clearButton.$el);
        return this;
    }
}

filterView.js

import Backbone from 'backbone';

export default class FilterView extends Backbone.View {
    constructor(){
        super({
            tagName: 'ul',
            className: 'filters'
        });
    }
    
	events(){
    	return {
			"click .all": "toggleAll",
      		"click .active": "toggleAllActive",
      		"click .completed": "toggleAllComplete"
    	};
	}
    
    toggleAll(){
        
    }
    
    toggleAllActive(){
        
    }
    
    toggleAllComplete(){
        
    }
    
    initialize(){
        this.render();
    }
    
    template(){
        return `
<li><a class="all" href="#/">All</a></li>
<li><a class="active" href="#/active">Active</a></li>
<li><a class="completed" href="#/completed">Completed</a></li>
`;
    }
    
    render(){
        this.$el.html(this.template());
        return this;
    }
}

constants.js

export const ENTER_KEY = 13;
export const ESCAPE_KEY = 27;
export const COMPLETED = "completed";
export const ACTIVE = "active";
export const TITLE = "title";

clearButton.js

import Backbone from 'backbone';

export default class ClearButton extends Backbone.View {
    constructor(){
        super({
            tagName: "button",
            className: "clear-completed"
        });
    }
    
	events(){
    	return {
      		"click": "clearCompleted",
    	};
	}
    
    clearCompleted(){
        this.trigger("clearCompleted");
    }
    
    initialize(){
        this.render();
    }
    
    render(){
        let numComplete = 0;
        this.$el.html(`Clear ${numComplete} completed`);
        return this;
    }
}

cell0.js

import {say} from 'cowsay'
say({text: "hello there! \n\nWelcome to the Carbide Alpha\nRelease TODOMVC Example Notebook!\n\nTo get started, open the external \nwindow, and press the run button\non index.js \n\n(that's the cell under this one)\n\nSend bugs to\nbugs@trycarbide.com!\n\nSend hellos to\nhello@trycarbide.com!" || ' '})

base.css

hr {
	margin: 20px 0;
	border: 0;
	border-top: 1px dashed #c5c5c5;
	border-bottom: 1px dashed #f7f7f7;
}

.learn a {
	font-weight: normal;
	text-decoration: none;
	color: #b83f45;
}

.learn a:hover {
	text-decoration: underline;
	color: #787e7e;
}

.learn h3,
.learn h4,
.learn h5 {
	margin: 10px 0;
	font-weight: 500;
	line-height: 1.2;
	color: #000;
}

.learn h3 {
	font-size: 24px;
}

.learn h4 {
	font-size: 18px;
}

.learn h5 {
	margin-bottom: 0;
	font-size: 14px;
}

.learn ul {
	padding: 0;
	margin: 0 0 30px 25px;
}

.learn li {
	line-height: 20px;
}

.learn p {
	font-size: 15px;
	font-weight: 300;
	line-height: 1.3;
	margin-top: 0;
	margin-bottom: 0;
}

#issue-count {
	display: none;
}

.quote {
	border: none;
	margin: 20px 0 60px 0;
}

.quote p {
	font-style: italic;
}

.quote p:before {
	content: '“';
	font-size: 50px;
	opacity: .15;
	position: absolute;
	top: -20px;
	left: 3px;
}

.quote p:after {
	content: '”';
	font-size: 50px;
	opacity: .15;
	position: absolute;
	bottom: -42px;
	right: 3px;
}

.quote footer {
	position: absolute;
	bottom: -40px;
	right: 0;
}

.quote footer img {
	border-radius: 3px;
}

.quote footer a {
	margin-left: 5px;
	vertical-align: middle;
}

.speech-bubble {
	position: relative;
	padding: 10px;
	background: rgba(0, 0, 0, .04);
	border-radius: 5px;
}

.speech-bubble:after {
	content: '';
	position: absolute;
	top: 100%;
	right: 30px;
	border: 13px solid transparent;
	border-top-color: rgba(0, 0, 0, .04);
}

.learn-bar > .learn {
	position: absolute;
	width: 272px;
	top: 8px;
	left: -300px;
	padding: 10px;
	border-radius: 5px;
	background-color: rgba(255, 255, 255, .6);
	transition-property: left;
	transition-duration: 500ms;
}

@media (min-width: 899px) {
	.learn-bar {
		width: auto;
		padding-left: 300px;
	}

	.learn-bar > .learn {
		left: 8px;
	}
}

appRoot.js

import Backbone from 'backbone';
import TodoCollection from './todoCollection.js';
import HeaderView from './headerView.js';
import MainSectionView from './mainSectionView.js';
import FooterView from './footerView.js';

export default class AppRoot extends Backbone.View {
    constructor(){
        super({
            el: document.getElementById('root'),
            collection: new TodoCollection()
        });
    }
    
    initialize(){
        this.render();
    }
    
    render(){
        this.$el.html('');
        let header = new HeaderView({collection: this.collection});
        this.$el.append(header.$el);
        let main = new MainSectionView({collection: this.collection});
        this.$el.append(main.$el);
        let footer = new FooterView({collection: this.collection});
        this.$el.append(footer.$el);
        return this;
    }
}

app.css

html,
body {
	margin: 0;
	padding: 0;
}

button {
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	font-size: 100%;
	vertical-align: baseline;
	font-family: inherit;
	font-weight: inherit;
	color: inherit;
	-webkit-appearance: none;
	appearance: none;
	-webkit-font-smoothing: antialiased;
	-moz-font-smoothing: antialiased;
	font-smoothing: antialiased;
}

body {
	font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
	line-height: 1.4em;
	background: #f5f5f5;
	color: #4d4d4d;
	min-width: 230px;
	max-width: 550px;
	margin: 0 auto;
	-webkit-font-smoothing: antialiased;
	-moz-font-smoothing: antialiased;
	font-smoothing: antialiased;
	font-weight: 300;
}

button,
input[type="checkbox"] {
	outline: none;
}

.hidden {
	display: none;
}

#root {
	background: #fff;
	margin: 130px 0 40px 0;
	position: relative;
	box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2),
	            0 25px 50px 0 rgba(0, 0, 0, 0.1);
}

#root input::-webkit-input-placeholder {
	font-style: italic;
	font-weight: 300;
	color: #e6e6e6;
}

#root input::-moz-placeholder {
	font-style: italic;
	font-weight: 300;
	color: #e6e6e6;
}

#root input::input-placeholder {
	font-style: italic;
	font-weight: 300;
	color: #e6e6e6;
}

#root h1 {
	position: absolute;
	top: -155px;
	width: 100%;
	font-size: 100px;
	font-weight: 100;
	text-align: center;
	color: rgba(175, 47, 47, 0.15);
	-webkit-text-rendering: optimizeLegibility;
	-moz-text-rendering: optimizeLegibility;
	text-rendering: optimizeLegibility;
}

.new-todo,
.edit {
	position: relative;
	margin: 0;
	width: 100%;
	font-size: 24px;
	font-family: inherit;
	font-weight: inherit;
	line-height: 1.4em;
	border: 0;
	outline: none;
	color: inherit;
	padding: 6px;
	border: 1px solid #999;
	box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
	box-sizing: border-box;
	-webkit-font-smoothing: antialiased;
	-moz-font-smoothing: antialiased;
	font-smoothing: antialiased;
}

.new-todo {
	padding: 16px 16px 16px 60px;
	border: none;
	background: rgba(0, 0, 0, 0.003);
	box-shadow: inset 0 -2px 1px rgba(0,0,0,0.03);
}

.main {
	position: relative;
	z-index: 2;
	border-top: 1px solid #e6e6e6;
}

label[for='toggle-all'] {
	display: none;
}

.toggle-all {
	position: absolute;
	top: -55px;
	left: -12px;
	width: 60px;
	height: 34px;
	text-align: center;
	border: none; /* Mobile Safari */
}

.toggle-all:before {
	content: '❯';
	font-size: 22px;
	color: #e6e6e6;
	padding: 10px 27px 10px 27px;
}

.toggle-all:checked:before {
	color: #737373;
}

.todo-list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.todo-list li {
	position: relative;
	font-size: 24px;
	border-bottom: 1px solid #ededed;
}

.todo-list li:last-child {
	border-bottom: none;
}

.todo-list li.editing {
	border-bottom: none;
	padding: 0;
}

.todo-list li.editing .edit {
	display: block;
	width: 506px;
	padding: 13px 17px 12px 17px;
	margin: 0 0 0 43px;
}

.todo-list li.editing .view {
	display: none;
}

.todo-list li .toggle {
	text-align: center;
	width: 40px;
	/* auto, since non-WebKit browsers doesn't support input styling */
	height: auto;
	position: absolute;
	top: 0;
	bottom: 0;
	margin: auto 0;
	border: none; /* Mobile Safari */
	-webkit-appearance: none;
	appearance: none;
}

.todo-list li .toggle:after {
	content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#ededed" stroke-width="3"/></svg>');
}

.todo-list li .toggle:checked:after {
	content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#bddad5" stroke-width="3"/><path fill="#5dc2af" d="M72 25L42 71 27 56l-4 4 20 20 34-52z"/></svg>');
}

.todo-list li label {
	white-space: pre-line;
	word-break: break-all;
	padding: 15px 60px 15px 15px;
	margin-left: 45px;
	display: block;
	line-height: 1.2;
	transition: color 0.4s;
}

.todo-list li.completed label {
	color: #d9d9d9;
	text-decoration: line-through;
}

.todo-list li .destroy {
	display: none;
	position: absolute;
	top: 0;
	right: 10px;
	bottom: 0;
	width: 40px;
	height: 40px;
	margin: auto 0;
	font-size: 30px;
	color: #cc9a9a;
	margin-bottom: 11px;
	transition: color 0.2s ease-out;
}

.todo-list li .destroy:hover {
	color: #af5b5e;
}

.todo-list li .destroy:after {
	content: '×';
}

.todo-list li:hover .destroy {
	display: block;
}

.todo-list li .edit {
	display: none;
}

.todo-list li.editing:last-child {
	margin-bottom: -1px;
}

.footer {
	color: #777;
	padding: 10px 15px;
	height: 20px;
	text-align: center;
	border-top: 1px solid #e6e6e6;
}

.footer:before {
	content: '';
	position: absolute;
	right: 0;
	bottom: 0;
	left: 0;
	height: 50px;
	overflow: hidden;
	box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2),
	            0 8px 0 -3px #f6f6f6,
	            0 9px 1px -3px rgba(0, 0, 0, 0.2),
	            0 16px 0 -6px #f6f6f6,
	            0 17px 2px -6px rgba(0, 0, 0, 0.2);
}

.todo-count {
	float: left;
	text-align: left;
}

.todo-count strong {
	font-weight: 300;
}

.filters {
	margin: 0;
	padding: 0;
	list-style: none;
	position: absolute;
	right: 0;
	left: 0;
}

.filters li {
	display: inline;
}

.filters li a {
	color: inherit;
	margin: 3px;
	padding: 3px 7px;
	text-decoration: none;
	border: 1px solid transparent;
	border-radius: 3px;
}

.filters li a.selected,
.filters li a:hover {
	border-color: rgba(175, 47, 47, 0.1);
}

.filters li a.selected {
	border-color: rgba(175, 47, 47, 0.2);
}

.clear-completed,
html .clear-completed:active {
	float: right;
	position: relative;
	line-height: 20px;
	text-decoration: none;
	cursor: pointer;
	position: relative;
}

.clear-completed:hover {
	text-decoration: underline;
}

.info {
	margin: 65px auto 0;
	color: #bfbfbf;
	font-size: 10px;
	text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
	text-align: center;
}

.info p {
	line-height: 1;
}

.info a {
	color: inherit;
	text-decoration: none;
	font-weight: 400;
}

.info a:hover {
	text-decoration: underline;
}

/*
	Hack to remove background from Mobile Safari.
	Can't use it globally since it destroys checkboxes in Firefox
*/
@media screen and (-webkit-min-device-pixel-ratio:0) {
	.toggle-all,
	.todo-list li .toggle {
		background: none;
	}

	.todo-list li .toggle {
		height: 40px;
	}

	.toggle-all {
		-webkit-transform: rotate(90deg);
		transform: rotate(90deg);
		-webkit-appearance: none;
		appearance: none;
	}
}

@media (max-width: 430px) {
	.footer {
		height: 50px;
	}

	.filters {
		bottom: 10px;
	}
}

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