finished step 7 docs

step1-07/README.md

@@ -160,20 +160,29 @@ const { label, completed, complete, id } = this.props;
 
 And then use the input's `onChange` event to fire our `complete` callback. We can see in the signature that we expect and `id` of type string, so we'll pass our `id` prop in.
 
+```tsx
+<input type="checkbox" checked={completed} onChange={() => complete(id)} />
+```
+
 > Note that the function param and prop name just happen to be the same. This isn't required.
 
-TodoListItemProps, extend, id, complete (possible abstraction)
-add props, add complete to List item
+## Exercise
 
-## List
+### TodoFooter
 
-Demo how you can't add random things to TodoListItem or item's this.props now
+1. Open TodoFooter and write a TodoFooterProps interface. It should include two values, a function and an object. Assign this interface to props like this: `(props: TodoFooterProps)`
+2. Write an `_onClick` function that calls `props.clear`.
+   > Since TodoFooter is not a class the `_onClick` needs to be declared as a const, and placed before the `return`.
+3. Add `_onClick` to the button's `onClick`. You won't need to use `this` since this isn't a class.
+   > We can't assign our `clear` function directly to `onClick`. We always need to create a function that calls our callbacks. `() => props.clear()`
+4. Test out this functionality. Check a few todos complete and click the `Clear Completed` button
 
-exercise
+### TodoHeader
 
-Add types to footer
-Add onClick to button
-Add types to header
-Add setFilter to filter buttons
-write onAdd function
-place onAdd to submit button
+1. Open TodoHeader and write TodoHeaderProps which will include 3 values. Replace the first `any` with this interface.
+2. This component also has state. Write TodoHeaderState (there's just one item), 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
+5. Call `_onAdd` from the submit button
+6. Check out this new functionality! We can now add and filter todos!

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

@@ -17,9 +17,9 @@ export class TodoHeader extends React.Component<any, any> {
           <button className="submit">Add</button>
         </div>
         <nav className="filter">
-          <button className={filter == 'all' ? 'completed' : ''}>all</button>
-          <button className={filter == 'active' ? 'completed' : ''}>active</button>
-          <button className={filter == 'completed' ? 'completed' : ''}>completed</button>
+          <button className={filter == 'all' ? 'selected' : ''}>all</button>
+          <button className={filter == 'active' ? 'selected' : ''}>active</button>
+          <button className={filter == 'completed' ? 'selected' : ''}>completed</button>
         </nav>
       </header>
     );

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

@@ -17,14 +17,18 @@ export class TodoHeader extends React.Component<any, any> {
           <button className="submit">Add</button>
         </div>
         <nav className="filter">
-          <button className={filter == 'all' ? 'completed' : ''}>all</button>
-          <button className={filter == 'active' ? 'completed' : ''}>active</button>
-          <button className={filter == 'completed' ? 'completed' : ''}>completed</button>
+          <button className={filter == 'all' ? 'selected' : ''}>all</button>
+          <button className={filter == 'active' ? 'selected' : ''}>active</button>
+          <button className={filter == 'completed' ? 'selected' : ''}>completed</button>
         </nav>
       </header>
     );
   }
 
+  _onFilter = evt => {
+    this.props.setFilter(evt.target.textContet);
+  };
+
   _onChange = evt => {
     this.setState({ labelInput: evt.target.value });
   };

step1-07/final/src/components/TodoFooter.tsx

@@ -7,12 +7,16 @@ interface TodoFooterProps {
 
 export const TodoFooter = (props: TodoFooterProps) => {
   const itemCount = Object.keys(props.todos).filter(id => !props.todos[id].completed).length;
+  const _onClick = () => {
+    props.clear();
+  };
+
   return (
     <footer>
       <span>
         {itemCount} item{itemCount > 1 ? 's' : ''} left
       </span>
-      <button onClick={() => props.clear()} className="submit">
+      <button onClick={_onClick} className="submit">
         Clear Completed
       </button>
     </footer>

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

@@ -7,7 +7,11 @@ interface TodoHeaderProps {
   filter: FilterTypes;
 }
 
-export class TodoHeader extends React.Component<TodoHeaderProps, any> {
+interface TodoHeaderState {
+  labelInput: string;
+}
+
+export class TodoHeader extends React.Component<TodoHeaderProps, TodoHeaderState> {
   constructor(props) {
     super(props);
     this.state = { labelInput: '' };
@@ -25,13 +29,13 @@ export class TodoHeader extends React.Component<TodoHeaderProps, any> {
           </button>
         </div>
         <nav className="filter">
-          <button onClick={() => setFilter('all')} className={filter == 'all' ? 'completed' : ''}>
+          <button onClick={this._onFilter} className={filter == 'all' ? 'selected' : ''}>
             all
           </button>
-          <button onClick={() => setFilter('active')} className={filter == 'active' ? 'completed' : ''}>
+          <button onClick={this._onFilter} className={filter == 'active' ? 'selected' : ''}>
             active
           </button>
-          <button onClick={() => setFilter('completed')} className={filter == 'completed' ? 'completed' : ''}>
+          <button onClick={this._onFilter} className={filter == 'completed' ? 'selected' : ''}>
             completed
           </button>
         </nav>
@@ -39,6 +43,10 @@ export class TodoHeader extends React.Component<TodoHeaderProps, any> {
     );
   }
 
+  _onFilter = evt => {
+    this.props.setFilter(evt.target.textContet);
+  };
+
   _onChange = evt => {
     this.setState({ labelInput: evt.target.value });
   };