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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Learn Redux - Todo</title>
<link rel="shortcut icon" type="image/png" href="http://www.favicon.cc/logo3d/805435.png"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.0.5/redux.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.5/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.5/react-dom.min.js"></script>
<!-- Why JSXTransformer? see: http://git.io/vug4q -->
<script src="https://fb.me/JSXTransformer-0.13.3.js"></script>
<script src="https://wzrd.in/standalone/expect@latest"></script>
<script src="https://wzrd.in/standalone/deep-freeze@latest"></script>
</head>
<body>
<div id='root'></div>
<script type="text/jsx">
'use strict'; // got: http://stackoverflow.com/q/33001246/1148249 without this
const todo = (state, action) => {
switch (action.type) {
case 'ADD_TODO':
return {
id: action.id,
text: action.text,
completed: false
}
case 'TOGGLE_TODO':
if (state.id !== action.id) {
return state;
}
return Object.assign({}, state, { // see: http://git.io/vuBzV
completed: !state.completed // here state is the individual todo
});
default:
return state;
}
}
const todos = (state = [], action) => {
switch (action.type) {
case 'ADD_TODO':
// return [
// ...state,
// todo(undefined, action)
// ]
// array spread was causing errors ... so this is the ES5 version:
var newState = state.map( (e) => { return e; }); // copy state values
newState.push(todo(undefined, action)); // add the new todo entry
return newState;
case 'TOGGLE_TODO':
return state.map(t => todo(t, action));
default:
return state;
}
};
const visibilityFilter = (
state = 'SHOW_ALL', // default state
action
) => {
switch (action.type) {
case 'SET_VISIBILITY_FILTER':
return action.filter;
default:
return state;
}
};
const { combineReducers } = Redux;
const todoApp = combineReducers({
todos,
visibilityFilter
});
const { createStore } = Redux;
const store = createStore(todoApp);
const { Component } = React;
let nextTodoId = 0;
class TodoApp extends Component {
render() {
return (
<div>
<input ref={node => {
this.input = node;
}} />
<button onClick={() => {
store.dispatch({
type: 'ADD_TODO',
text: this.input.value,
id: nextTodoId++
});
this.input.value = '';
}}>
Add Todo
</button>
<ul>
{this.props.todos.map(todo =>
<li key={todo.id}
onClick={() => {
store.dispatch({
type: 'TOGGLE_TODO',
id: todo.id
});
}}
style={{
textDecoration:
todo.completed ?
'line-through' :
'none'
}}
>
{todo.text}
</li>
)}
</ul>
</div>
);
}
}
const render = () => {
ReactDOM.render(
<TodoApp todos={store.getState().todos} />,
document.getElementById('root')
);
};
store.subscribe(render);
render(); // initial state
// Checks and Tests Below this Point
console.log('Initial state:');
console.log(store.getState());
console.log('--------------');
console.log('Dispatching ADD_TODO.'); // first todo
store.dispatch({
type: 'ADD_TODO',
id: 0,
text: 'Learn Redux'
});
console.log('Current state:');
console.log(store.getState());
console.log('--------------');
console.log('Dispatching ADD_TODO.'); // second todo
store.dispatch({
type: 'ADD_TODO',
id: 0,
text: 'Go shopping'
});
console.log('Current state:');
console.log(store.getState());
console.log('--------------');
console.log('Dispatching TOGGLE_TODO.'); // toggle first todo
store.dispatch({
type: 'TOGGLE_TODO',
id: 0
});
console.log('Current state:');
console.log(store.getState());
console.log('--------------');
console.log('Dispatching SET_VISIBILITY_FILTER');
store.dispatch({
type: 'SET_VISIBILITY_FILTER',
filter: 'SHOW_COMPLETED'
});
console.log('Current state:');
console.log(store.getState());
console.log('--------------');
const testAddTodo = () => {
const stateBefore = [];
const action = {
type: 'ADD_TODO',
id: 0,
text: 'Learn Redux'
}
const stateAfter = [
{
id: 0,
text: 'Learn Redux',
completed: false
}
];
deepFreeze(stateBefore);
deepFreeze(action);
expect(
todos(stateBefore, action)
).toEqual(stateAfter);
};
const testToggleTodo = () => {
const stateBefore = [
{
id: 0,
text: 'Learn Redux',
completed: false
},
{
id: 1,
text: 'Go shopping',
completed: false
}
];
const action = {
type: 'TOGGLE_TODO',
id: 1
};
const stateAfter = [
{
id: 0,
text: 'Learn Redux',
completed: false
},
{
id: 1,
text: 'Go shopping',
completed: true
}
];
deepFreeze(stateBefore);
deepFreeze(action);
expect(
todos(stateBefore, action)
).toEqual(stateAfter);
}
testAddTodo();
testToggleTodo();
console.log('All tests passed.');
</script>
</body>
</html>