readme cleanup

step1-07/exercise/README.md

@@ -1,29 +1,27 @@
-## Exercise
+#Step 1-07: Exercise
 
-If you don't already have the app running, start it by running `npm start` from the root of the `frontend-bootcamp` folder. Click the "exercise" link under day 1 step 7 to see results.
+## TodoFooter
 
-### TodoFooter
-
-1. Open TodoFooter and write a TodoFooterProps interface. It should include two values, a function and an object. Use this interface in the function props like this: `(props: TodoFooterProps)`
+1. Open TodoFooter and write a TodoFooterProps interface. It should include two values, a `clear` and `todos`. Use this interface in the function props like this: `(props: TodoFooterProps)`
 
 2. Write an `_onClick` function that calls `props.clear`.
+
    > Since TodoFooter is not a class, the `_onClick` function needs to be stored in a const placed before the `return`.
 
 3. Assign `_onClick` to the button's `onClick` prop. You won't need to use `this` since the component isn't a class.
 
 4. Test out this functionality. Check a few todos complete and click the `Clear Completed` button.
 
-### TodoHeader
+## TodoHeader
 
-1. Open TodoHeader and write TodoHeaderProps which will include three values. Replace the first `any` in the class declaration with this interface.
+1. Open TodoHeader and write TodoHeaderProps which will include `addTodo`, `setFilter` and `filter`. Replace the first `any` in the class declaration with this interface.
 
 2. This component also has state. Write TodoHeaderState (there's just one value), and add this where the second `any` was.
 
 3. Add `_onFilter` to each of the filter buttons
+
    > Note that we can't add new parameters to onClick, but we can pull information from the event target!
 
-4. Write an `_onAdd` method that calls `addTodo` on the current `labelInput`, then sets the `labelInput` in state to an empty string
+4. Call `_onAdd` from the submit button
 
-5. Call `_onAdd` from the submit button
-
-6. Check out this new functionality! We can now add and filter todos!
+5. Check out this new functionality! We can now add and filter todos!

step1-07/exercise/src/TodoApp.types.ts

@@ -1,5 +1,7 @@
 export type FilterTypes = 'all' | 'active' | 'completed';
 
+export type CompleteTodo = (id) => null;
+
 export interface TodoItem {
   label: string;
   completed: boolean;

step1-07/exercise/src/components/TodoHeader.tsx

@@ -32,4 +32,9 @@ export class TodoHeader extends React.Component<any, any> {
   _onChange = evt => {
     this.setState({ labelInput: evt.target.value });
   };
+
+  _onAdd = () => {
+    this.props.addTodo(this.state.labelInput);
+    this.setState({ labelInput: '' });
+  };
 }

step1-07/exercise/src/components/TodoList.tsx

@@ -12,6 +12,7 @@ export class TodoList extends React.Component<TodoListProps, any> {
   render() {
     const { filter, todos, complete } = this.props;
 
+    // filteredTodos returns an array of filtered todo keys [01,02,03]
     const filteredTodos = Object.keys(todos).filter(id => {
       return filter === 'all' || (filter === 'completed' && todos[id].completed) || (filter === 'active' && !todos[id].completed);
     });