This commit is contained in:
Micah Godbolt
2019-03-03 20:24:27 -08:00
11 changed files with 51 additions and 47 deletions

View File

@@ -7,6 +7,11 @@ body {
padding: 0;
}
body.ms-Fabric {
font-size: 14px;
line-height: 20px;
}
#app {
flex: 1 1 40%;
padding: 50px;
@@ -41,7 +46,7 @@ body {
}
#markdownReadme code {
font-family: Consolas,Menlo,Monaco,monospace;
font-family: Consolas, Menlo, Monaco, monospace;
font-size: 0.9em;
background-color: white;
padding: 0.2em 0.4em;

View File

@@ -119,7 +119,7 @@ button.onclick = displayMatches();
You can also combine these together like this:
```js
docment.querySelector('.submit').onclick = displayMatches;
document.querySelector('.submit').onclick = displayMatches;
```
Wire this up and see you function in action!

View File

@@ -35,11 +35,11 @@ A view is a React component that consumes the store as its data.
The [store](https://redux.js.org/basics/store) consists of a **state tree**, a **dispatcher**, and **reducers**.
1. The **state tree** is a _singleton_, _serializable_, _immutable_ json data. It is updated from one snapshot to another through `reducers`.
1. The **state tree** is a _singleton_, _serializable_, _immutable_ nested json data. It is updated from one snapshot to another through `reducers`.
2. The **dispatcher** accepts actions passing them to the reducers.
3. **Reducers** are functions that take in the current state tree and an action, producing the next snapshot of the state tree.
3. **Reducers** are functions that take in the current state tree and an action, producing the next snapshot of the state tree. This is the only way to update the state tree.
## Why Use Redux?
@@ -52,17 +52,15 @@ There are lots of alternatives available, but here are some really good reasons
# Creating the Redux store
The [`createStore()`](https://redux.js.org/api/createstore) function is provided by Redux and can take in several arguments. The simplest form just takes in reducers.
The [`createStore()`](https://redux.js.org/api/createstore) function is provided by Redux to create a store. In general, an application would just have one single store. It takes in the reducer and an initial snapshot of the state tree.
```ts
const store = createStore(reducer, initialState);
```
`createStore()` creates a store with a reducer, and some initial state.
# Writing Reducers
We will write our reducers with the help of some utilities from `redux-starter-kit`. Here is how we will write our reducers:
We will write our reducers with the help of some utilities from the official `redux-starter-kit`. Here is how we will write our reducers:
## 1. Organize reducers according to the keys of the state tree object:

View File

@@ -5,7 +5,18 @@
</head>
<body class="ms-Fabric">
<div id="markdownReadme" class="exercise" data-src="./README.md"></div>
<div id="app"></div>
<div id="app">
<p>
Nothing to show here; just look at your console window for output. Hit F12 (<code>cmd+option+I</code> on Mac) to open console
window.
</p>
<p>
To inspect Redux store, use the <a href="http://extension.remotedev.io/">Redux Dev Tool</a> extension for your browser:
<a href="https://chrome.google.com/webstore/detail/redux-devtools/lmhkpmbekcpmknklioeibfkpmmfibljd">Chrome</a>,
<a href="https://addons.mozilla.org/en-US/firefox/addon/reduxdevtools/">FireFox</a>. (Sorry, no Edge or IE support)
</p>
</div>
<script src="../../assets/scripts.js"></script>
</body>
</html>

View File

@@ -68,7 +68,7 @@ class TodoHeader extends React.Component<TodoHeaderProps, TodoHeaderState> {
}
const ConnectedTodoHeader = connect(
state => {},
state => ({}),
dispatch => ({
addTodo: label => dispatch(actions.addTodo(label)),
setFilter: filter => dispatch(actions.setFilter(filter))

View File

@@ -24,9 +24,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
render() {
const { id } = this.props;
const { todos } = this.context.getState();
const dispatch = this.context.dispatch;
const { id, todos, complete, remove } = this.props;
const item = todos[id];
@@ -34,10 +32,10 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
<Stack horizontal verticalAlign="center" horizontalAlign="space-between">
{!this.state.editing && (
<>
<Checkbox label={item.label} checked={item.completed} onChange={() => dispatch(actions.complete(id))} />
<Checkbox label={item.label} checked={item.completed} onChange={() => complete(id)} />
<div>
<IconButton iconProps={{ iconName: 'Edit' }} onClick={this.onEdit} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => dispatch(actions.remove(id))} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => remove(id)} />
</div>
</>
)}
@@ -57,8 +55,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
private onEdit = () => {
const { id } = this.props;
const { todos } = this.context.getState();
const { id, todos } = this.props;
const { label } = todos[id];
this.setState({
@@ -83,9 +80,9 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
const ConnectedTodoListItem = connect(
(state: Store) => ({ todos: state.todos }),
dispatch => ({
complete: label => dispatch(actions.addTodo(label)),
remove: label => dispatch(actions.addTodo(label)),
edit: filter => dispatch(actions.setFilter(filter))
complete: id => dispatch(actions.complete(id)),
remove: id => dispatch(actions.remove(id)),
edit: (id, label) => dispatch(actions.edit(id, label))
})
)(TodoListItem);

View File

@@ -24,9 +24,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
render() {
const { id } = this.props;
const { todos } = this.context.getState();
const dispatch = this.context.dispatch;
const { id, todos, complete, remove } = this.props;
const item = todos[id];
@@ -34,10 +32,10 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
<Stack horizontal verticalAlign="center" horizontalAlign="space-between">
{!this.state.editing && (
<>
<Checkbox label={item.label} checked={item.completed} onChange={() => dispatch(actions.complete(id))} />
<Checkbox label={item.label} checked={item.completed} onChange={() => complete(id)} />
<div>
<IconButton iconProps={{ iconName: 'Edit' }} onClick={this.onEdit} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => dispatch(actions.remove(id))} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => remove(id)} />
</div>
</>
)}
@@ -57,8 +55,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
private onEdit = () => {
const { id } = this.props;
const { todos } = this.context.getState();
const { id, todos } = this.props;
const { label } = todos[id];
this.setState({
@@ -83,9 +80,9 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
const ConnectedTodoListItem = connect(
(state: Store) => ({ todos: state.todos }),
dispatch => ({
complete: label => dispatch(actions.addTodo(label)),
remove: label => dispatch(actions.addTodo(label)),
edit: filter => dispatch(actions.setFilter(filter))
complete: id => dispatch(actions.complete(id)),
remove: id => dispatch(actions.remove(id)),
edit: (id, label) => dispatch(actions.edit(id, label))
})
)(TodoListItem);

View File

@@ -44,7 +44,7 @@ export const actionsWithService = {
edit: (id: string, label: string) => {
return async (dispatch: any, getState: () => Store) => {
dispatch(actions.complete(id));
dispatch(actions.edit(id, label));
await service.update(id, getState().todos[id]);
};
}

View File

@@ -68,7 +68,7 @@ class TodoHeader extends React.Component<TodoHeaderProps, TodoHeaderState> {
}
const ConnectedTodoHeader = connect(
state => {},
state => ({}),
(dispatch: any) => ({
addTodo: label => dispatch(actionsWithService.addTodo(label)),
setFilter: filter => dispatch(actions.setFilter(filter))

View File

@@ -1,6 +1,6 @@
import React from 'react';
import { Stack, Checkbox, IconButton, TextField, DefaultButton } from 'office-ui-fabric-react';
import { actions, actionsWithService } from '../actions';
import { actionsWithService } from '../actions';
import { Store } from '../store';
import { connect } from 'react-redux';
@@ -24,9 +24,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
render() {
const { id } = this.props;
const { todos } = this.context.getState();
const dispatch = this.context.dispatch;
const { id, todos, complete, remove } = this.props;
const item = todos[id];
@@ -34,10 +32,10 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
<Stack horizontal verticalAlign="center" horizontalAlign="space-between">
{!this.state.editing && (
<>
<Checkbox label={item.label} checked={item.completed} onChange={() => dispatch(actions.complete(id))} />
<Checkbox label={item.label} checked={item.completed} onChange={() => complete(id)} />
<div>
<IconButton iconProps={{ iconName: 'Edit' }} onClick={this.onEdit} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => dispatch(actions.remove(id))} />
<IconButton iconProps={{ iconName: 'Cancel' }} onClick={() => remove(id)} />
</div>
</>
)}
@@ -57,8 +55,7 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
}
private onEdit = () => {
const { id } = this.props;
const { todos } = this.context.getState();
const { id, todos } = this.props;
const { label } = todos[id];
this.setState({
@@ -83,9 +80,9 @@ class TodoListItem extends React.Component<TodoListItemProps, TodoListItemState>
const ConnectedTodoListItem = connect(
(state: Store) => ({ todos: state.todos }),
(dispatch: any) => ({
complete: label => dispatch(actionsWithService.addTodo(label)),
remove: label => dispatch(actionsWithService.addTodo(label)),
edit: filter => dispatch(actions.setFilter(filter))
complete: id => dispatch(actionsWithService.complete(id)),
remove: id => dispatch(actionsWithService.remove(id)),
edit: (id, label) => dispatch(actionsWithService.edit(id, label))
})
)(TodoListItem);

View File

@@ -7,13 +7,12 @@ import { Provider } from 'react-redux';
import { initializeIcons } from '@uifabric/icons';
import { composeWithDevTools } from 'redux-devtools-extension';
import thunk from 'redux-thunk';
import { FilterTypes } from './store';
import * as service from './service';
import { Store, FilterTypes } from './store';
(async () => {
// TODO: to make the store pre-populate with data from the service,
// replace the todos value below with a call to "await service.getAll()"
const preloadStore = {
todos: {},
todos: (await service.getAll()) as Store['todos'],
filter: 'all' as FilterTypes
};