A card designed for use in the activity panel. This is a very structured component, which expects at minimum a label and content. It can optionally also include a date, actions, an image, and a dropdown menu.
This component is similar to `ActivityCard` in output, but renders no real content, just loading placeholders. This is also hidden from any interaction with screen readers using `aria-hidden`.
## How to use:
```jsx
import { ActivityCardPlaceholder } from 'components/activity-card';
render: function() {
return (
<ActivityCardPlaceholderhasDate/>
);
}
```
## Props
*`hasAction`: Boolean. If true, shows a placeholder block for an action. Default false.
*`hasDate`: Boolean. If true, shows a placeholder block for the date. Default false.
*`hasSubtitle`: Boolean. If true, shows a placeholder block for the subtitle. Default false.
*`lines`: Number. How many lines of placeholder content we should show. Default 1.