Svelte Material UI - Ripple

Ripples are an interaction feedback mechanism.

Installation

npm install --save-dev @smui/ripple

Demo

in action: https://sveltematerialui.com/demo/ripple

demo code: https://github.com/hperrin/svelte-material-ui/blob/master/site/src/routes/demo/ripple/

Basic Usage

If you don't have a `class` attribute:

<p use:Ripple tabindex="0">Here is an element with a ripple.</p>

If you do have a `class` attribute:

<p
  class="some-class {Object.keys(rippleClasses).join(' ')}"
  use:Ripple={{
    addClass: (className) => (rippleClasses[className] = true),
    removeClass: (className) => {
      delete rippleClasses[className];
      rippleClasses = rippleClasses;
    },
  }}
  tabindex="0"
>
  Here is an element with a ripple.
</p>

<script>
  import Ripple from '@smui/ripple';

  let rippleClasses = {};
</script>

Exports

(default)

A ripple Svelte action.

Props / Defaults

The action accepts an array, with two entries. The first is a boolean, whether the ripple is enabled. The second is an object with the props:

• ripple: true - Whether to enable the ripple.
• surface: false - Whether the ripple surface classes should be added.
• unbounded: false - Whether the ripple is unbounded.
• disabled: false - Whether the node is disabled.
• color: null - The ripple color. ('surface', 'primary', or 'secondary')
• active: null - Used to determine active status of the ripple. If it's null, the ":active" pseudo class will be checked on activeTarget or the node.
• eventTarget: null - An alternate element where ripple triggering event listeners will be added.
• activeTarget: null - An alternate element where active status will be checked.
• addClass: (className) => node.classList.add(className) - A function to add a class to the node.
• removeClass: (className) => node.classList.remove(className) - A function to remove a class from the node.
• addStyle: (name, value) => node.style.setProperty(name, value) - A function to add a style property to the node. If given a value of '' or null, it should remove the property.
• initPromise: Promise.resolve() - A promise to wait for before initializing the ripple.

More Information

See Ripple in MDC-Web for information about the upstream library's architecture.