Displaying the default component only during hover on the parent component using FluentUI + React

General Explanation Regarding Displaying the Default Component in React

In the world of web development, sometimes we need to change different elements on the page based on user interactions. One of the popular techniques and widely used methods is displaying or not displaying a default component while the user hovers over the parent component. This action can enhance the user experience and provides interactions on the page where necessary to display.

In this article, we will examine how to achieve this by using the FluentUI library along with React. The FluentUI library is among the numerous rich user interface libraries designed to improve and speed up the execution of UI designs. By combining React and FluentUI, we can create beautiful and user-friendly components.

In addition to leveraging FluentUI's capabilities, using CSS features such as :hover and advanced control states in React can help to create a very smooth and responsive user experience. To achieve this purpose, we will utilize FluentUI components and managing parent states in React.

Here, we will analyze a practical example of how to implement this feature. The goal is to create a seamless interaction where you can easily achieve such requests in real-world projects and harness the powerful features of FluentUI.

Example Code

import React, { useState } from 'react';
import { DefaultButton } from 'office-ui-fabric-react';

const ParentComponent = () => {
  const [isHovered, setIsHovered] = useState(false);

  return (
    <div 
      onMouseEnter={() => setIsHovered(true)} 
      onMouseLeave={() => setIsHovered(false)}
      style={{ border: '1px solid black', padding: '20px', display: 'inline-block'}}
    >
      <span>Hover over me!</span>
      {isHovered && <ChildComponent />}
    </div>
  );
};

const ChildComponent = () => {
  return (
    <div style={{ marginTop: '10px', backgroundColor: '#f0f0f0', padding: '10px' }}>
      <DefaultButton text="I'm a child component!" />
    </div>
  );
};

export default ParentComponent;

Line-by-Line Explanation of the Code

import React, { useState } from 'react';
This line imports React and the useState hook from the React library which we will use for managing the component's state.

import { DefaultButton } from 'office-ui-fabric-react';
This line imports the DefaultButton component from the FluentUI library (the same as office-ui-fabric-react) which we will use in this example.

const ParentComponent = () => { ... }
This creates a functional component named ParentComponent. This component's role is to manage the display and control of the default component.

const [isHovered, setIsHovered] = useState(false);
This creates a state named isHovered which helps us determine whether the user is hovering over the parent component or not.

<div onMouseEnter={() => setIsHovered(true)} onMouseLeave={() => setIsHovered(false)} ... >
This div includes two event handlers: onMouseEnter and onMouseLeave which will appropriately manage the state during hover and leave actions.

{isHovered && <ChildComponent />}
This line conditionally determines whether the default component should be displayed or not, based on the value of the isHovered state.

const ChildComponent = () => { ... }
Defines a functional component that is displayed only when the user is hovering over the parent component.