material-ui-cordova/Input/InputLabel.js.flow

React components that implement Google's Material Design.

// @flow

import React from 'react';
import type { Node } from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import withStyles from '../styles/withStyles';
import { FormLabel } from '../Form';

export const styles = (theme: Object) => ({
  root: {
    transformOrigin: 'top left',
  },
  formControl: {
    position: 'absolute',
    left: 0,
    top: 0,
    // slight alteration to spec spacing to match visual spec result
    transform: `translate(0, ${theme.spacing.unit * 3 - 1}px) scale(1)`,
  },
  labelDense: {
    // Compensation for the `Input.inputDense` style.
    transform: `translate(0, ${theme.spacing.unit * 2.5 + 1}px) scale(1)`,
  },
  shrink: {
    transform: 'translate(0, 1.5px) scale(0.75)',
    transformOrigin: 'top left',
  },
  animated: {
    transition: theme.transitions.create('transform', {
      duration: theme.transitions.duration.shorter,
      easing: theme.transitions.easing.easeOut,
    }),
  },
  disabled: {
    color: theme.palette.input.disabled,
  },
});

type ProvidedProps = {
  classes: Object,
  /**
   * @ignore
   */
  theme?: Object,
};

export type Props = {
  /**
   * Other base element props.
   */
  [otherProp: string]: any,
  /**
   * The contents of the `InputLabel`.
   */
  children?: Node,
  /**
   * Useful to extend the style applied to components.
   */
  classes?: Object,
  /**
   * @ignore
   */
  className?: string,
  /**
   * If `true`, the transition animation is disabled.
   */
  disableAnimation: boolean,
  /**
   * If `true`, apply disabled class.
   */
  disabled: boolean,
  /**
   * If `true`, the label will be displayed in an error state.
   */
  error?: boolean,
  /**
   * `classes` property applied to the `FormControl` element.
   */
  FormControlClasses?: Object,
  /**
   * If `true`, the input of this label is focused.
   */
  focused?: boolean,
  /**
   * If `dense`, will adjust vertical spacing. This is normally obtained via context from
   * FormControl.
   */
  margin?: 'dense',
  /**
   * if `true`, the label will indicate that the input is required.
   */
  required?: boolean,
  /**
   * If `true`, the label is shrunk.
   */
  shrink?: boolean,
};

class InputLabel extends React.Component<ProvidedProps & Props> {
  static defaultProps = {
    disabled: false,
    disableAnimation: false,
  };

  static contextTypes = {
    muiFormControl: PropTypes.object,
  };

  context: { muiFormControl: Object };

  render() {
    const {
      disabled,
      disableAnimation,
      children,
      classes,
      className: classNameProp,
      FormControlClasses,
      shrink: shrinkProp,
      margin: marginProp,
      ...other
    } = this.props;

    const { muiFormControl } = this.context;
    let shrink = shrinkProp;

    if (typeof shrink === 'undefined' && muiFormControl) {
      shrink = muiFormControl.dirty || muiFormControl.focused || muiFormControl.adornedStart;
    }

    let margin = marginProp;
    if (typeof margin === 'undefined' && muiFormControl) {
      margin = muiFormControl.margin;
    }

    const className = classNames(
      classes.root,
      {
        [classes.formControl]: muiFormControl,
        [classes.animated]: !disableAnimation,
        [classes.shrink]: shrink,
        [classes.disabled]: disabled,
        [classes.labelDense]: margin === 'dense',
      },
      classNameProp,
    );

    return (
      <FormLabel data-shrink={shrink} className={className} classes={FormControlClasses} {...other}>
        {children}
      </FormLabel>
    );
  }
}

export default withStyles(styles, { name: 'MuiInputLabel' })(InputLabel);