hterm: Change <x-screen> to have a role="log"

This change is a compromise: in some ways the terminal behaves like a
text box but not in all ways. It is not editable in the same ways a text
box is editable and the content we want to be read out by a screen
reader does not always align with the edits (selection changes) that
happen in the terminal window. We change the role to a log so that the
screen reader doesn't treat it like a text box and announce all
selection changes. The announcements that we want spoken are generated
by the live region, which gives more control over what will be spoken.

Bug: 822490, 646690
Change-Id: I5e0cff1415916c2efb7d44300084fe808e33b71d
Tested-by: Raymes Khoury <>
Reviewed-by: Mike Frysinger <>
1 file changed
tree: d3be5543dbf380e88c23ecadec54080e2740b7c0
  1. .clang-format
  2. .eslintrc.js
  3. .gitignore
  7. hterm/
  8. libdot/
  9. nassh/
  11. package.json
  12. saltpig/
  13. ssh_client/
  14. wam/
  15. wash/


This repository contains the libdot JavaScript library and some web applications that make use of it.

The official copy of this repository is hosted at

There is also a mirror on github at A few subprojects are also extracted out into their own git repo and mirrored. Keep in mind that these mirrors may occasionally be behind the official repository.

All changes must go through the Gerrit code review server on Github pull requests cannot be accepted. Please see the document in this directory for the details.

Top level directories

  • libdot/ is a small set of JS libraries initially developed as part of hterm, now available as shared code.

  • hterm/ is a JS library that provides a terminal emulator. It is reasonably fast, reasonably correct, and reasonably portable across browsers.

  • nassh/ is the Secure Shell Chrome App (currently a “v1.5” app, soon to become a “v2” or platform app) that combines hterm with a NaCl build of OpenSSH to provide a PuTTY-like app for Chrome users.

  • ssh_client/ is the NaCl port of OpenSSH. It is used by nassh to create the Secure Shell App.

  • wash/ is a library for cross-origin virtual filesystems, similar to the Plan 9 filesystem. This directory also contains a simple bash-like shell environment for exploring these filesystems. The code in this directory is a work-in-progress.