---
id: 18
title: Introduce ZAPHandler interface for getContent()
status: done
priority: medium
created: 2026-07-17T03:57:59.054256365+02:00
updated: 2026-07-18T11:51:03.280085523+02:00
started: 2026-07-18T11:51:03.281402582+02:00
completed: 2026-07-18T11:51:03.281402582+02:00
tags:
    - framework
class: standard
---

From framework review (docs/framework_review.md), P1-7. Currently getContent() is convention-only — no interface enforces it. A handler missing the method fails at runtime, not definition time. Fix: create a ZAPHandler (or ModeHandler) interface with public function getContent(), implement it on all existing handlers, add instanceof check in ZAPController.

[[2026-07-18]] Sat 11:50
Created ZAPHandler interface with getContent(), implemented on ZAPHome/ZAPDisplay/ZAPZap, added instanceof check in ZAPController::fetch().