Hotkeys Managers

Overview

HotkeysManager handles all the logics for adding, setting and enabling/disabling the hotkeys.

Instantiation

HotkeysManager is instantiated in the appInit similar to the other managers.

const commandsManager = new CommandsManager(commandsManagerConfig);
const servicesManager = new ServicesManager(commandsManager);
const hotkeysManager = new HotkeysManager(commandsManager, servicesManager);
const extensionManager = new ExtensionManager({
  commandsManager,
  servicesManager,
  hotkeysManager,
  appConfig,
});

Hotkeys Manager API

• setHotkeys: The most important method in the HotkeysManager which binds the keys with commands.
• setDefaultHotKeys: set the defaultHotkeys property. Note that, this method does not bind the provided hotkeys; however, when restoreDefaultBindings is called, the provided defaultHotkeys will get bound.
• destroy: reset the HotkeysManager, and remove the set hotkeys and empty out the defaultHotkeys

Structure of a Hotkey Definition

A hotkey definition should have the following properties:

• commandName: name of the registered command
• commandOptions: extra arguments to the commands
• keys: an array defining the key to get bound to the command
• label: label to be shown in the hotkeys preference panel
• isEditable: whether the key can be edited by the user in the hotkey panel

Default hotkeysBindings

The default key bindings can be find in hotkeyBindings.js

// platform/core/src/defaults/hotkeyBindings.js

export default [
  /**..**/
  {
    commandName: 'setToolActive',
    commandOptions: { toolName: 'Zoom' },
    label: 'Zoom',
    keys: ['z'],
    isEditable: true,
  },

  {
    commandName: 'flipViewportHorizontal',
    label: 'Flip Vertically',
    keys: ['v'],
    isEditable: true,
  },
  /**..**/
]

Behind the Scene

When you setHotkeys, the commandName gets registered with the commandsManager and get run after the key is pressed.