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@lukemelia

lukemelia/README.md

Last active Apr 9, 2020
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keyboard-shortcut element modifer

An element modifier to attach a keyboard shortcut to an element that has a click method

Example usage:

  <button {{action 'doSomethingCool'}} {{keyboard-shortcut "D"}}>
    [D]o something cool
  </button>

Requirements:

  • ember-octane preview (from blueprint)
  • ember-oo-modifiers (0.2.2)
  • ember-keyboard

Note: make sure @ember-decorators/babel-transforms is present and is at ^2.1.2 for now (this is expected to be rolled into ember-cli-babel)

// app/modifiers/keyboard-shortcut.js
import Modifier from 'ember-oo-modifiers';
import { inject as service } from '@ember/service';
import { keyDown } from 'ember-keyboard';
class KeyboardShortcutModifier extends Modifier {
@service keyboard;
keyboardActivated = true
keyboardPriority = 0
didReceiveArguments([key, action]) {
this.key = key;
this.action = action;
}
// Note: ember-keyboard is designed to be used via its mixin, however classes don't support mixins.
// So this modifier implements `has` and `trigger` to behave like it would if EKMixin was included.
// We would love to see a a better, non-mixin way of interacting with ember-keyboard be added.
didInsertElement(){
super.didInsertElement(...arguments);
this.keyboard.register(this);
}
willDestroyElement(){
super.willDestroyElement(...arguments);
this.keyboard.unregister(this);
}
has(triggerName) {
if (triggerName === `keydown:Key${this.key}`) {
return true;
}
return false;
}
trigger(listenerName) {
if (listenerName === keyDown(`Key${this.key}`)) {
this.element.click();
}
}
}
export default Modifier.modifier(KeyboardShortcutModifier);
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