Use attached-windows module in your Chrome extension to attach multiple normal and/or popup windows together that behave like a single window.

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• Attaches multiple windows to each other.
• Keeps track of the state, position, and size of each window.
• Supports normal and popup window types.
• Automatically updates the position and size of attached windows when one of them is resized or closed.

npm i attached-windows

A minimal example of attaching 3 windows:

import AttachedWindows from 'attached-windows'
import { AttachedWindowsConfiguration } from 'attached-windows'

const configuration: AttachedWindowsConfiguration = {
    container: {
        top: 0,
        left: 0,
        width: 1300,
        height: 600,
        state: 'normal'
    },
    windows: [
        {
            id: (await chrome.windows.create({ type: 'normal', url: 'https://twitter.com/' })).id as number,
            widthFraction: 0.5,
            isPrimary: true,
            isHidden: false,
            type: 'normal'
        },
        {
            id: (await chrome.windows.create({ type: 'normal', url: 'https://www.google.com/' })).id as number,
            widthFraction: 0.225,
            isPrimary: false,
            type: 'popup'
        },
        {
            id: (await chrome.windows.create({ type: 'normal', url: 'https://www.github.com/' })).id as number,
            widthFraction: 0.25,
            isPrimary: false,
            type: 'popup'
        }
    ]
}

AttachedWindows.initialize(configuration)

Terminates the AttachedWindows instance and close attached windows:

AttachedWindows.terminate({ closeWindows: true, closePrimary: false })

You can specify the options closeWindows and closePrimary to control if all windows or just the primary window should be closed.

AttachedWindowsContainer - An interface that represents the configuration of the attached windows container.
Properties:

• top: number
• left: number
• width: number
• height: number
• state: 'normal' | 'minimized'

AttachedWindowsWindow - An interface that represents the configuration of a single window within the container.
Properties:

• id: number
• name: any (optional)
• widthFraction: number
• isPrimary: boolean (optional)
• isHidden: boolean (optional)
• type: 'normal' | 'popup'
• bounds: AttachedWindowsContainer

AttachedWindowsConfiguration - An interface that represents the configuration for the AttachedWindows class.
Properties:

• container: AttachedWindowsContainer
• windows: AttachedWindowsWindow[]

AttachedWindows - The main class for managing attached windows.

Properties:

• onRemoveAttachedWindow: Function (optional)

Methods:

• initialize: A method that initializes and attaches multiple windows. The input parameter configuration is an object of type AttachedWindowsConfiguration that includes the information required to initialize the attached windows.
• terminate: A method that terminates the AttachedWindows instance and closes the attached windows. You can specify the options closeWindows and closePrimary to control if all windows or just the primary window should be closed.

You are welcome to contribute! If you are adding a feature or fixing a bug, please contribute to the GitHub repository.

attached-windows is licensed under the MIT license.

@SheikhAminul