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[docs] Allow default actions of nested elements #20777

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Apr 26, 2020
Merged

[docs] Allow default actions of nested elements #20777

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27 changes: 15 additions & 12 deletions docs/src/modules/components/Demo.js
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Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,14 @@ const styles = (theme) => ({
marginTop: -64, // height of toolbar
position: 'absolute',
},
initialFocus: {
position: 'absolute',
top: 0,
left: 0,
width: theme.spacing(4),
height: theme.spacing(4),
pointerEvents: 'none',
},
});

function getDemoName(location) {
Expand Down Expand Up @@ -341,20 +349,12 @@ function Demo(props) {

const initialFocusRef = React.useRef(null);
function handleResetFocusClick() {
initialFocusRef.current.focus();
}
function handleDemoMouseDown(event) {
// Otherwise clicking any non-focusable element in the demo focuses the demo container
// which is surprising and not how the code would behave outside of this page
event.preventDefault();
initialFocusRef.current.focusVisible();
}

return (
<div className={classes.root}>
{/* We're actually preventing interaction here */}
{/* eslint-disable-next-line jsx-a11y/no-static-element-interactions */}
<div
aria-label={t('initialFocusLabel')}
className={clsx(classes.demo, {
[classes.demoHiddenToolbar]: demoOptions.hideToolbar,
[classes.demoBgOutlined]: demoOptions.bg === 'outlined',
Expand All @@ -363,10 +363,13 @@ function Demo(props) {
})}
onMouseEnter={handleDemoHover}
onMouseLeave={handleDemoHover}
onMouseDown={handleDemoMouseDown}
ref={initialFocusRef}
tabIndex={-1}
>
<IconButton
aria-label={t('initialFocusLabel')}
className={classes.initialFocus}
action={initialFocusRef}
tabIndex={-1}
/>
<DemoSandboxed
key={demoKey}
style={demoSandboxedStyle}
Expand Down