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[Slider] Improve RTL support #20851

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merged 4 commits into from
May 2, 2020
Merged

[Slider] Improve RTL support #20851

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daa9795
Add test case
Apr 29, 2020
8fd2b89
[Slider] Handle RTL on keyboard
Apr 30, 2020
d169f16
increaseKey and decreaseKey
Apr 30, 2020
6b5bf53
remove dead logic
oliviertassinari May 2, 2020
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10 changes: 7 additions & 3 deletions packages/material-ui/src/Slider/Slider.js
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Original file line number Diff line number Diff line change
Expand Up @@ -425,13 +425,17 @@ const Slider = React.forwardRef(function Slider(props, ref) {
setOpen(-1);
});

const isRtl = theme.direction === 'rtl';

const handleKeyDown = useEventCallback((event) => {
const index = Number(event.currentTarget.getAttribute('data-index'));
const value = values[index];
const tenPercents = (max - min) / 10;
const marksValues = marks.map((mark) => mark.value);
const marksIndex = marksValues.indexOf(value);
let newValue;
const ArrowRight = isRtl ? 'ArrowLeft' : 'ArrowRight';
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const ArrowLeft = isRtl ? 'ArrowRight' : 'ArrowLeft';
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switch (event.key) {
case 'Home':
Expand All @@ -450,15 +454,15 @@ const Slider = React.forwardRef(function Slider(props, ref) {
newValue = value - tenPercents;
}
break;
case 'ArrowRight':
case ArrowRight:
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case 'ArrowUp':
if (step) {
newValue = value + step;
} else {
newValue = marksValues[marksIndex + 1] || marksValues[marksValues.length - 1];
}
break;
case 'ArrowLeft':
case ArrowLeft:
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case 'ArrowDown':
if (step) {
newValue = value - step;
Expand Down Expand Up @@ -503,7 +507,7 @@ const Slider = React.forwardRef(function Slider(props, ref) {

const previousIndex = React.useRef();
let axis = orientation;
if (theme.direction === 'rtl' && orientation === 'horizontal') {
if (isRtl && orientation === 'horizontal') {
axis += '-reverse';
}

Expand Down
19 changes: 19 additions & 0 deletions packages/material-ui/src/Slider/Slider.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -391,6 +391,25 @@ describe('<Slider />', () => {
fireEvent.keyDown(document.activeElement, moveLeftEvent);
expect(thumb).to.have.attribute('aria-valuenow', '-3e-8');
});

it('should handle RTL', () => {
const { getByRole } = render(
<ThemeProvider
theme={createMuiTheme({
direction: 'rtl',
})}
>
<Slider defaultValue={30} />
</ThemeProvider>,
);
const thumb = getByRole('slider');
thumb.focus();

fireEvent.keyDown(document.activeElement, moveLeftEvent);
expect(thumb).to.have.attribute('aria-valuenow', '31');
fireEvent.keyDown(document.activeElement, moveRightEvent);
expect(thumb).to.have.attribute('aria-valuenow', '30');
});
});

describe('prop: valueLabelDisplay', () => {
Expand Down