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Handling unidentified/death keys in the keyboard history UI

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#1,747 0 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
48/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
javascript
Área
frontend

Línea de trabajo

Start at app/static/js/app.js line 72, where the keyboard history relies on KeyboardEvent.key. Reproduce the alt+L case with the documented MacOS layout across Chrome, Safari, and Firefox, then verify that handling for Unidentified and Dead keys produces consistent, useful history in the UI without changing backend or HID behavior.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

bug

I noticed one quirk in the UI, regarding the keypress history in the status bar. Note: this only affects the UI, not the backend or HID interface!

When the client machine is configured to use a keyboard layout that doesn’t provide a mapping for certain keys or key combinations, the keyboard history shows inconsistent results across browsers. From the view point of the target machine, however, things work as expected. So this issue is specific to using non-EN-US keyboard layouts.

I tested this on a MacOS machine with a customised keyboard layout, which doesn’t define a mapping for the alt+L key combination. So pressing alt+L on the client machine wouldn’t produce any character on the client machine itself. However, on the target machine, the alt+L combination may be well-defined, e.g. if the target machine uses a German keyboard layout where alt+L maps to the @ character. In this scenario, TinyPilot would forward the alt+L combination to the target machine, and produce the @ there.

In the TinyPilot’s web UI, however, I see these results in the status bar:

As stated in the documentation, the key property of the KeyboardEvent object may be Unidentified or Dead:

  • If the KeyboardEvent represents the press of a dead key, the key value must be "Dead".
  • If the key cannot be identified, the returned value is Unidentified.

For the keyboard history, we rely on that key property, which is why we see this.

Lenguaje dominante
Python
Estrellas
3.5k
Forks
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