@material/line-ripple

What is @material/line-ripple?

@material/line-ripple is a package from the Material Components for the Web (MDC Web) library. It provides a line ripple component, which is typically used as an underline for text fields and other input elements. The line ripple is a visual effect that animates when the input element gains or loses focus, enhancing the user experience by providing a clear visual cue.

What are @material/line-ripple's main functionalities?

Initialize Line Ripple

This code initializes the line ripple component on an element with the class 'mdc-line-ripple'. The MDCLineRipple class is part of the @material/line-ripple package and is used to create and manage the line ripple effect.

const lineRipple = new MDCLineRipple(document.querySelector('.mdc-line-ripple'));

Activate Line Ripple

This code activates the line ripple effect, typically used when an input element gains focus. The activate method triggers the animation that makes the line ripple visible.

lineRipple.activate();

Deactivate Line Ripple

This code deactivates the line ripple effect, typically used when an input element loses focus. The deactivate method triggers the animation that hides the line ripple.

lineRipple.deactivate();

Set Ripple Center

This code sets the center of the ripple effect to a specific coordinate. The setRippleCenter method is useful for customizing the appearance of the ripple effect based on user interactions.

lineRipple.setRippleCenter(50);

Other packages similar to @material/line-ripple

material-ui

Material-UI is a popular React component library that implements Google's Material Design. It provides a wide range of components, including input fields with underline effects similar to the line ripple in @material/line-ripple. Material-UI is more comprehensive and offers a broader set of components and utilities for building Material Design applications.

react-md

react-md is another React component library that follows Material Design guidelines. It includes components for text fields with underline effects, similar to the line ripple provided by @material/line-ripple. react-md focuses on providing a complete set of Material Design components for React applications.

vuetify

Vuetify is a Material Design component framework for Vue.js. It offers a wide range of components, including input fields with underline effects similar to the line ripple in @material/line-ripple. Vuetify is designed to be a comprehensive solution for building Material Design applications with Vue.js.

README

Line Ripple

The line ripple is used to highlight user-specified input above it. When a line ripple is active, the line’s color and thickness changes.

Design & API Documentation

• Material Design guidelines: Text Fields Layout
• Demo with Line Ripple on Text Field

Installation

npm install @material/line-ripple

Basic Usage

HTML Structure

<div class="mdc-line-ripple"></div>

Styles

@import "@material/line-ripple/mdc-line-ripple";

JavaScript Instantiation

import {MDCLineRipple} from '@material/line-ripple';

const lineRipple = new MDCLineRipple(document.querySelector('.mdc-line-ripple'));

Style Customization

CSS Classes

CSS Class	Description
mdc-line-ripple	Mandatory.
mdc-line-ripple--active	Styles the line ripple as an active line ripple.
mdc-line-ripple--deactivating	Styles the line ripple as a deactivating line ripple.

Sass Mixins

Mixin	Description
mdc-line-ripple-color($color)	Customizes the color of the line ripple when active.

MDCLineRipple Properties and Methods

Method Signature	Description
activate() => void	Proxies to the foundation's activate() method.
deactivate() => void	Proxies to the foundation's deactivate() method.
setRippleCenter(xCoordinate: number) => void	Proxies to the foundation's setRippleCenter(xCoordinate: number) method.

Usage Within Frameworks

If you are using a JavaScript framework, such as React or Angular, you can create a Line Ripple for your framework. Depending on your needs, you can use the Simple Approach: Wrapping MDC Web Vanilla Components, or the Advanced Approach: Using Foundations and Adapters. Please follow the instructions here.

MDCLineRippleAdapter

Method Signature	Description
addClass(className: string) => void	Adds a class to the root element.
removeClass(className: string) => void	Removes a class from the root element.
setStyle(propertyName: string, value: string) => void	Sets the style property with propertyName to value on the root element.
registerEventHandler(evtType: string, handler: EventListener) => void	Registers an event listener on the root element for a given event.
deregisterEventHandler(handler: EventListener) => void	Deregisters an event listener on the root element for a given event.

MDCLineRippleFoundation

Method Signature	Description
activate() => void	Activates the line ripple.
deactivate() => void	Deactivates the line ripple.
setRippleCenter(xCoordinate: number) => void	Sets the center of the ripple to the xCoordinate given.
handleTransitionEnd(evt: Event) => void	Handles a transitionend event.