emscripten-core/emscripten

[docs] iframe keyboard not working

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#5,796 opened on Nov 15, 2017

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good first bughelp wanted

Description

I've tried on Chrome and Firefox and both have the same behavior.

if I open the demo directly: http://esenthel.com/site/Esenthel%20Fantasy%20Demo/Esenthel%20Fantasy%20Demo.html Then keyboard works OK. Click on "Menu / Options" and you can type something in the "Gui Scale" textfield in the menu window. or you can close it with "Escape" key.

But if I open the page through an iframe: http://www.esenthel.com/?id=live_demo Then keyboard doesn't work anymore, I press keys and nothing happens.

I use the following code: <iframe src="site/Esenthel Fantasy Demo/Esenthel Fantasy Demo.html" width="95%" height="520px" scrolling="no" webkitallowfullscreen mozallowfullscreen style="box-shadow:none;-webkit-box-shadow:none;border:none;overflow:hidden"></iframe>

Contributor guide

Tech stack
ccppjavascriptwasm
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
basic Emscripten knowledgeweb development
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate how Emscripten captures keyboard input when the application is embedded in an iframe. Look at the HTML5 event handling code in Emscripten's library (e.g., library html5.js) and the SDL or GLFW input backends. Check if there are any workarounds for focusing the iframe or using the 'allow' attribute for keyboard input. The issue was reported in 2017 and may relate to browser security restrictions on iframe focus.
[docs] iframe keyboard not working · emscripten-core/emscripten#5796 | Good First Issue