The `<MenuTrigger />` component. Implemented using
[useMenuTrigger](https://react-spectrum.adobe.com/react-aria/useMenuTrigger.html) from React-Aria.

## Content

The `<Menu />` element follows the
[Collection Components API](https://react-spectrum.adobe.com/react-stately/collections.html) from
the `@react-stately` library, accepting both static and dynamic collections. `<Menu />` accepts
`<Item />` elements as children, each with a key prop. Basic usage of `<Menu />`, seen in the
example below, shows multiple options populated with a string. Simple element with simple options as
text.

## Important!

The `<Menu />` components provided to the `<MenuTrigger />` need to be separated and not grouped
together! For example, if you have a wrapper component that groups together 2 Menus related to each
other, and you render that component inside the `<MenuTrigger />` as one single child, the
MenuTrigger will not identify the Menus correctly and will break accessibility.

Therefore you need to pass 2 children (one per `<Menu />`).

### Don't

```js
const Menus = (<Menu key="1"/><Menu  key="2"/><Menu  key="3"/>);
...
return (
  <MenuTrigger>
   <Menus/> // donn't do this!
  </MenuTrigger>
);
```

### Do

```js
return (
  <MenuTrigger>
    <Menu key="1" /> // do this
    <Menu key="2" />
    <Menu key="3" />
  </MenuTrigger>
);
```

The type of each child doesn't necessarily need to be `Menu`, as long as the leaf component of the
child resolves to `Menu`. Exmaple

```js
const WrappedSettingsMenu = (
  <WrappedSettingsContainer>
    <Menu/>
  </WrappedSettingsContainer>
);
const WrappeedShareMenu = (<Menu/>);
...
return (
  <MenuTrigger>
    <WrappedSettingsMenu/>
    <WrappeedShareMenu />
  </MenuTrigger>
);
```

## Children Structure

```
+-------------------------+
| Menu Component 1        |
+-------------------------+
| Menu Component 2        |
+-------------------------+
| Menu Component ...      |
+-------------------------+
```

## Simple example

```js
<MenuTrigger
  closeOnSelect={true}
  triggerComponent={
    <ButtonPill key="1">
      <div>Menu</div> <Icon name="arrow-down" weight="bold" autoScale={100} />
    </ButtonPill>
  }
>
  <Menu selectionMode="single" key="2">
    <Item key="one">One</Item>
    <Item key="two">Two</Item>
    <Item key="three">Three</Item>
    <Item key="four">Four</Item>
    <Item key="five">Five</Item>
    <Item key="six">Six</Item>
  </Menu>
</MenuTrigger>
```

## Complex example

This is a more complex example showing how to build a menu trigger with multiple selection modes

```js
<MenuTrigger
  closeOnSelect={false}
  triggerComponent={
    <ButtonPill key="1">
      <div>Mixed Selection</div> <Icon name="arrow-down" weight="bold" autoScale={100} />
    </ButtonPill>
  }
>
  <Menu selectionMode="single" key="2">
    <Item key="one">One</Item>
    <Item key="two">Two</Item>
    <Item key="three">Three</Item>
  </Menu>
  <Menu selectionMode="multiple" key="2">
    <Item key="four">Four</Item>
    <Item key="five">Five</Item>
    <Item key="six">Six</Item>
  </Menu>
</MenuTrigger>
```