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electron/docs/api/global-shortcut.md
Charles Kerr c83f836faf
refactor: prefer using app.whenReady() (#21972) 
* docs: add references to app.whenReady() in isReady

* refactor: prefer app.whenReady()

In the docs, specs, and lib, replace instances of `app.once('ready')`
(seen occasionally) and `app.on('ready')` (extremely common) with
`app.whenReady()`.

It's better to encourage users to use whenReady():
1. it handles the edge case of registering for 'ready' after it's fired
2. it avoids the minor wart of leaving an active listener alive for
an event that wll never fire again
2020-02-03 22:43:22 +00:00

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globalShortcut

Detect keyboard events when the application does not have keyboard focus.

Process: Main

The globalShortcut module can register/unregister a global keyboard shortcut with the operating system so that you can customize the operations for various shortcuts.

Note: The shortcut is global; it will work even if the app does not have the keyboard focus. You should not use this module until the ready event of the app module is emitted.

const { app, globalShortcut } = require('electron')

app.whenReady().then(() => {
  // Register a 'CommandOrControl+X' shortcut listener.
  const ret = globalShortcut.register('CommandOrControl+X', () => {
    console.log('CommandOrControl+X is pressed')
  })

  if (!ret) {
    console.log('registration failed')
  }

  // Check whether a shortcut is registered.
  console.log(globalShortcut.isRegistered('CommandOrControl+X'))
})

app.on('will-quit', () => {
  // Unregister a shortcut.
  globalShortcut.unregister('CommandOrControl+X')

  // Unregister all shortcuts.
  globalShortcut.unregisterAll()
})

Methods

The globalShortcut module has the following methods:

globalShortcut.register(accelerator, callback)

Returns Boolean - Whether or not the shortcut was registered successfully.

Registers a global shortcut of accelerator. The callback is called when the registered shortcut is pressed by the user.

When the accelerator is already taken by other applications, this call will silently fail. This behavior is intended by operating systems, since they don't want applications to fight for global shortcuts.

The following accelerators will not be registered successfully on macOS 10.14 Mojave unless the app has been authorized as a trusted accessibility client:

  • "Media Play/Pause"
  • "Media Next Track"
  • "Media Previous Track"
  • "Media Stop"

globalShortcut.registerAll(accelerators, callback)

  • accelerators String[] - an array of Accelerators.
  • callback Function

Registers a global shortcut of all accelerator items in accelerators. The callback is called when any of the registered shortcuts are pressed by the user.

When a given accelerator is already taken by other applications, this call will silently fail. This behavior is intended by operating systems, since they don't want applications to fight for global shortcuts.

The following accelerators will not be registered successfully on macOS 10.14 Mojave unless the app has been authorized as a trusted accessibility client:

  • "Media Play/Pause"
  • "Media Next Track"
  • "Media Previous Track"
  • "Media Stop"

globalShortcut.isRegistered(accelerator)

Returns Boolean - Whether this application has registered accelerator.

When the accelerator is already taken by other applications, this call will still return false. This behavior is intended by operating systems, since they don't want applications to fight for global shortcuts.

globalShortcut.unregister(accelerator)

Unregisters the global shortcut of accelerator.

globalShortcut.unregisterAll()

Unregisters all of the global shortcuts.