Extension-Druid/api/components/base/back_handler_api.md

druid.back_handler API

at /druid/base/back_handler.lua

Component to handle back button. It handles Android back button and Backspace key.

Setup

Create back handler component with druid: druid:new_back_handler(callback)

Notes

• Key triggers in input.binding should be setup for correct working
• It uses a key_back and key_backspace action ids

Functions

• init

Fields

• on_back
• params

init

---

back_handler:init([callback], [params])

The Back Handler constructor

• Parameters:
  • [callback] (function|nil): The callback to call when the back handler is triggered
  • [params] (any): Custom args to pass in the callback

Fields

• on_back (event): fun(self: druid.back_handler, params: any?) Trigger on back handler action

• params (any): Custom args to pass in the callback