[FIXED] How to change material-ui slider thumb style when it's disabled

Issue

I am able to modify the Slider style using withStyles:

const CustomSlider = withStyles(theme => ({
  disabled: {
    color: theme.palette.primary.main
  },
  thumb: {
    height: 24,
    width: 24,
  },
}))(Slider);

but the height and width of the thumb is only applied when the component is disabled={false}.

is there a simple way to change the slider height and width on disabled={true}?

Demo: https://codesandbox.io/s/slide-thumb-size-gxb4g?file=/demo.js

Solution

Reason

The style is been overridden by className Mui-disabled

You can see the color will keep.

How to solve it

Override the style of MuiSlider-thumb or Mui-disabled

One option: use MUI className nesting selector

"& .MuiSlider-thumb": {
  height: 24,
  width: 24
}

Notice withStyles attributes refer to the CSS API, you can use className + style hooks instead to customize the className which is not exposed by the CSS API like that

Full code:

import React from "react";
import Slider from "@material-ui/core/Slider";
import Paper from "@material-ui/core/Paper";
import { withStyles, makeStyles } from "@material-ui/core/styles";

const useStyles = makeStyles(theme => ({
  margin: {
    margin: theme.spacing(10),
    "& .MuiSlider-thumb": {
      height: 24,
      width: 24
    }
  }
}));

const CustomSlider = withStyles(theme => ({
  disabled: {
    color: theme.palette.primary.main
  },
  thumb: {
    // color: "red"
  }
}))(Slider);

export default function MyCustomSlider() {
  const classes = useStyles();
  return (
    <div>
      <Paper className={classes.margin}>
        <CustomSlider
          defaultValue={[10, 15]}
          min={0}
          max={20}
          valueLabelDisplay="on"
          disabled={true}
        />{" "}
        <CustomSlider
          defaultValue={[5, 7]}
          min={0}
          max={20}
          valueLabelDisplay="on"
          disabled={false}
        />{" "}
      </Paper>
    </div>
  );
}

---

Update

For withStyles

const styles = theme =>
  createStyles({
    margin: {
      margin: theme.spacing(10)
    },
    thumb: {
      "& .MuiSlider-thumb": {
        height: 24,
        width: 24
      }
    }
  });

function MyCustomSlider(props) {
  // const classes = useStyles();
  return (
    <div>
      <Paper className={props.classes.margin}>
        <Slider
          defaultValue={[10, 15]}
          min={0}
          max={20}
          valueLabelDisplay="on"
          disabled={true}
          className={props.classes.thumb}
        />{" "}
        <Slider
          defaultValue={[5, 7]}
          min={0}
          max={20}
          valueLabelDisplay="on"
          disabled={false}
        />{" "}
      </Paper>
    </div>
  );
}

export default withStyles(styles)(MyCustomSlider);

Answered By - keikai
Answer Checked By - - Cary Denson (ReactFix Admin)