import * as React from 'react';
import { DefaultPalette, Slider, Stack, IStackStyles, IStackTokens } from 'office-ui-fabric-react';

// Non-mutating styles definition
const itemStyles: React.CSSProperties = {
  alignItems: 'center',
  background: DefaultPalette.themePrimary,
  color: DefaultPalette.white,
  display: 'flex',
  height: 50,
  justifyContent: 'center',
  width: 50
};

// Tokens definition
const sectionStackTokens: IStackTokens = { childrenGap: 10 };
const wrapStackTokens: IStackTokens = { childrenGap: 30 };

export const HorizontalStackWrapExample: React.FunctionComponent = () => {
  const [stackWidth, setStackWidth] = React.useState<number>(100);
  // Mutating styles definition
  const stackStyles: IStackStyles = {
    root: {
      background: DefaultPalette.themeTertiary,
      width: `${stackWidth}%`
    }
  };

  return (
    <Stack tokens={sectionStackTokens}>
      <Slider
        label="Change the stack width to see how child items wrap onto multiple rows:"
        min={1}
        max={100}
        step={1}
        defaultValue={100}
        showValue={true}
        onChange={setStackWidth}
      />

      <Stack horizontal wrap styles={stackStyles} tokens={wrapStackTokens}>
        <span style={itemStyles}>1</span>
        <span style={itemStyles}>2</span>
        <span style={itemStyles}>3</span>
        <span style={itemStyles}>4</span>
        <span style={itemStyles}>5</span>
        <span style={itemStyles}>6</span>
        <span style={itemStyles}>7</span>
        <span style={itemStyles}>8</span>
        <span style={itemStyles}>9</span>
        <span style={itemStyles}>10</span>
      </Stack>
    </Stack>
  );
};