React.js BluePrint Menu Component Dropdowns

BlueprintJS is a React-based UI toolkit for the web. This library is very optimized and popular for building complex data-dense interfaces for desktop applications. In this article, we will discuss React.js BluePrint Menu Component Dropdown.

A Menu is a list of interactive items. To display a Menu as a dropdown we can use Menu as the content property of the Popover Component provided by BlueprintJS. The Popover will be closed as soon as a MenuItem is clicked, to change this behavior, we can set the shouldDismissPopover of the MenuItem to false. 

React.js BluePrint Menu Component  Dropdowns Properties:

1. Popover Properties:

• content: This property can be used to assign a menu as the content of the popover.
• position: This property is used to choose the position of the popover content to be opened.

2. MenuItem Properties:

• shouldDismissPopover: This boolean property is used to disable the default behavior of closing the popover whenever a MenuItem is clicked.

Syntax:

<Popover content={<Menu>...</Menu>} 
         position={...}>
   <Button text="..." />
</Popover>

Creating React Application And Installing Modules:

Step 1: Create a React application using the following command:

npx create-react-app myApp

Step 2: After creating your project folder i.e. myApp, move to it using the following command:

cd myApp

Step 3: After creating the ReactJS application, Install the required modules using the following command:

npm install @blueprintjs/core @blueprintjs/icons

Project Structure: After following the above steps, the project structure will look as below:

Project Structure

Example 1: Now write down the following code in the App.js file. In this example, assigned a Menu as the content of the popover to open it as a dropdown.

app.js

import React from 'react'
import { Menu, MenuItem, Icon, Position, Button }
    from '@blueprintjs/core';
import '@blueprintjs/core/lib/css/blueprint.css';
import '@blueprintjs/icons/lib/css/blueprint-icons.css'
import { Popover2 } from '@blueprintjs/popover2';

function App() {

    const menu = <Menu
        style={{
            backgroundColor: "#BFFFAF",
            width: "150px"
        }}>
        <MenuItem text="Your Profile" />
        <MenuItem icon="home" text="Home" />
        <MenuItem icon="build" text="Practice" />
        <MenuItem icon="book" text="Courses" />
        <MenuItem icon="cog"
            labelElement={<Icon icon="share" />}
            text="Settings..." intent="primary"
        />
    </Menu>

    const divStyle = {
        display: 'block', width: 500,
        padding: 30
    };
    return (
        <div style={divStyle}>
            <h2
                style={{ color: "green" }}>GeeksforGeeks
            </h2>
            <h3>
                React.js BluePrint Menu Component Dropdowns
            </h3>

            <Popover2
                content={menu}
                position={Position.BOTTOM_RIGHT}>
                <Button icon="menu">Open the Menu</Button>
            </Popover2>
        </div>
    );
}

export default App;

Steps to run the app: Execute the following command from your project folder to run the app.

npm start

Output:

Example 2: In this example, we set the shouldDismissPopover property to false so that the popover does not close when we click on the Home and Practice MenuItem.

app.js

import React from 'react'
import { Menu, MenuItem, Icon, Position, Button }
    from '@blueprintjs/core';
import '@blueprintjs/core/lib/css/blueprint.css';
import '@blueprintjs/icons/lib/css/blueprint-icons.css'
import { Popover2 } from '@blueprintjs/popover2';

function App() {

    const menu = <Menu
        style={{
            backgroundColor: "#BFFFAF",
            width: "150px"
        }}>
        <MenuItem text="Your Profile" />
        <MenuItem
            icon="home" text="Home"
            shouldDismissPopover={false} />
        <MenuItem
            icon="build" text="Practice"
            shouldDismissPopover={false} />
        <MenuItem icon="book" text="Courses" />
        <MenuItem icon="cog"
            labelElement={<Icon icon="share" />}
            text="Settings..." intent="primary"
        />
    </Menu>

    const divStyle = {
        display: 'block', width: 500,
        padding: 30
    };
    return (
        <div style={divStyle}>
            <h2
                style={{ color: "green" }}>GeeksforGeeks
            </h2>
            <h3>
                React.js BluePrint Menu Component Dropdowns
            </h3>

            <Popover2
                content={menu}
                position={Position.BOTTOM_RIGHT}>
                <Button icon="menu">Open the Menu</Button>
            </Popover2>
        </div>
    );
}

export default App;

Output:

Reference: https://blueprintjs.com/docs/#core/components/menu.dropdowns