Creating custom components

Extending components

Components can be extended to provide custom behavior:

import React, { Component } from 'react';
import Registry from '../../src/utils/Registry';
import Chart from '../../src/components/Chart';

export default class CustomChart extends Chart {
  // ... do custom stuff here
}

// make sure to register the component!!
Registry.set('GAChart', CustomChart);

Javascript alllows you to override any method of a parent class, but...

** Functions commonly overridden in custom components: **

• fetchData: Provide logic for gatherin data
• onData: Preprocess the fetched data, when available
• onResize: Add a post-hook to a resize event. (this.state.componentWidth should always be available, and is updated after resize, but before onResize is called)