ember-battery

🔋 ember-battery

Battery status API packaged as a Service

Usage

Inject the battery service in your classes and access its api:

export default class ApplicationController extends Controller {
  @service battery;

  get isTooLow() {
    return !this.battery.isCharging && this.battery.level < 0.2;
  }

  get iconName() {
    let level = this.battery.level;
    if (level < 0.02) {
      return 'battery-0';
    } else if (level < 0.25) {
      return 'battery-1';
    } else if (level < 0.5) {
      return 'battery-2';
    } else if (level < 0.75) {
      return 'battery-3';
    } else {
      return 'battery-4';
    }
  }
}

Or use them directly in the templates:

{{#if this.battery.isSupported}}
  <p>{{this.battery.levelPercentage}}%  {{fa-icon this.iconName}}</p>

  {{#if this.battery.isCharging}}
    <p>Your battery is charging!</p>
  {{/if}}

  {{#if this.isTooLow}}
    <p>Your battery is too low!</p>
  {{/if}}

  <p>Discharging Time: {{this.battery.dischargingTime}}</p>
  <p>Charging Time: {{this.battery.chargingTime}}</p>
{{else}}
  <p>Your browser does not support battery status API.</p>
{{/if}}

Because the properties are @tracked, the templates and getters will update accordingly when the properties change.

API

The battery service has the following properties:

• isSupported - A Boolean value indicating whether or not the supports the battery status API.
• isCharging - A Boolean value indicating whether or not the battery is currently being charged.
• level - A number representing the system's battery charge level scaled to a value between 0.0 and 1.0.
• chargingTime - A number representing the remaining time in seconds until the battery is fully charged, or 0 if the battery is already fully charged.
• dischargingTime - A number representing the remaining time in seconds until the battery is completely discharged and the system will suspend.
• levelPercentage - A number representing the system's battery charge level scaled to a value between 0 % and 100 %

Compatibility

• Ember.js v3.16 or above
• Ember CLI v2.13 or above
• Node.js v10 or above

Installation

ember install ember-battery

Contributing

See the Contributing guide for details.

License

This project is licensed under the MIT License.