text-field

React Text Field

MDC React Text Field is component for MDC Text Field. Please see MDC Text Field.

Installation

npm install @material/react-text-field

Usage

Styles

with Sass:

import '@material/react-text-field/index.scss';

with CSS:

import '@material/react-text-field/dist/text-field.css';

Javascript Instantiation

React Text Field accepts one child element which is the input element. For ease of integration, we have provided an input component to be used with React Text Field.

import React from 'react';
import TextField, {HelperText, Input} from '@material/react-text-field';

class MyApp extends React.Component {
  state = {value: 'Woof'};

  render() {
    return (
      <div>
        <TextField
          label='Dog'
          helperText={<HelperText>Help Me!</HelperText>}
        >
          <Input
            value={this.state.value}
            onChange={(e) => this.setState({value: e.target.value})}/>
        </TextField>
      </div>
    );
  }
}

NOTE: In order to get access to the value, you must add an onChange handler, which accepts an event and updates the value of the input as shown above.

Props

Prop Name	Type	Description
children	Element	Mandatory. The input element of the text field.
className	String	An optional class added to the .mdc-text-field element.
dense	Boolean	Enables dense variant.
floatingLabelClassName	String	An optional class added to the floating label element of the text field.
fullWidth	Boolean	Enables fullWidth variant.
helperText	Element	Helper text that appears below the text field. Use the <HelperText> component that comes with this package.
isRtl	Boolean	Whether the direction of the text field element is set to RTL.
label	String	Mandatory. Label text that appears as the floating label or placeholder.
leadingIcon	Element	An icon element that appears as the leading icon.
lineRippleClassName	String	An optional class added to the line ripple element.
notchedOutlineClassName	String	An optional class added to the notched outline element.
outlined	Boolean	Enables outlined variant.
textarea	Boolean	Enables textarea variant.
trailingIcon	Element	An icon element that appears as the trailing icon.

Input Props

Not all the props below are used for majority of cases. Properties like foundation shouldn't be used when implementing the text field, but is used internally in React Text Field.

Prop Name	Type	Description
inputType	string	HTML tag to be used to render input element. 'input' (default) or 'textarea'.
className	String	Classes to be applied to the input element.
disabled	Function	Disables the input and the parent text field.
foundation	Function	The text field foundation.
handleValueChange	Function	A callback function to update React Text Field's value.
isValid	Boolean	If set, this value will override the native input's validation.
id	String	The <input> id attribute.
onBlur	Function	Blur event handler.
onChange	Function	Change event handler.
onFocus	Function	Focus event handler.
onMouseDown	Function	Mouse down event handler.
onTouchStart	Function	Touch start event handler.
setDisabled	Function	Callback function that is called when the disabled prop updates.
setInputId	Function	Callback function that is called when the id attribute updates.
handleFocusChange	Function	Callback function that is called when focus or blur events occur
value	Number/String	Value of the input.
ref	Function(input: ReactElement) => void	On mount of component, will call passed function with the instance of the <Input />.

NOTE: the <Input> component will receive all properties that a standard <input> accepts.

Accessing the Native Input element

There will be times when you need to access the native . For example if you need to focus the text field, you can add a ref callback method to the <Input /> element and access the <input />. The ref will accept a callback method and on mount and will pass the instance of the input component. Here is an example of how to programatically focus the <input />:

import React from 'react';
import TextField, {Input} from '@material/react-text-field';
import Button from '@material/react-button';

class MyApp extends React.Component {
  input = null;
  state = {value: 'Woof'};

  focusTextField = () => {
    if (!this.input) return;
    const inputElement = this.input.inputElement;
    if (inputElement) {
      inputElement.focus();
    }
  }

  render() {
    return (
      <div>
        <div>
          <Button onClick={this.focusTextField}>Focus Text Field</Button>
        </div>
        <TextField label='Dog'>
          <Input
            value={this.state.value}
            ref={input => this.input = input}
            onChange={(e) => this.setState({value: e.target.value})}/>
        </TextField>
      </div>
    );
  }
}

Sass Mixins

Sass mixins may be available to customize various aspects of the Components. Please refer to the MDC Web repository for more information on what mixins are available, and how to use them.

Advanced Sass Mixins

Usage with Icons

Please see our Best Practices doc when importing or using icon fonts.