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From "Mathias (JIRA)" <>
Subject [jira] [Commented] (GUACAMOLE-24) Directly integrate local clipboard
Date Mon, 04 Sep 2017 08:44:00 GMT


Mathias commented on GUACAMOLE-24:

Chrome Clipboard Permission Manager is not working with Firefox 55. WebExtensions is not full
supported in Firefox.

Browser compatibility from manifest.json.

"clipboardRead" is working since Firefox 54.

But manifest.json, background, persistent is not supported.

"background" : {
        "persistent" : false,


Perhaps upcoming Firefox versions 57 will offer a complete WebExtension support.

> Directly integrate local clipboard
> ----------------------------------
>                 Key: GUACAMOLE-24
>                 URL:
>             Project: Guacamole
>          Issue Type: New Feature
>          Components: guacamole
>            Reporter: Michael Jumper
>             Fix For: 0.9.10-incubating
> {panel:bgColor=#FFFFEE}
> *The description of this issue was copied from [GUAC-1480|],
an issue in the JIRA instance used by the Guacamole project prior to its acceptance into the
Apache Incubator.*
> Comments, attachments, related issues, and history from prior to acceptance *have not
been copied* and can be found instead at the original issue.
> {panel}
> Thanks to recent improvements in browser handling of clipboard, direct integration of
the local clipboard is now possible. Cut/copy via the keyboard can be written to work in all
cases, while the general case will require either:
> # -The Chrome [Allow Clipboard|]
extension.- Our [Clipboard Permission Manager extension|].
> # Browser support for prompting for clipboard permission upon use of the standard {{execCommand()}}
(currently only IE11).
> The situation for Chrome, Firefox, etc. is suboptimal, but still far better than before,
there is hope that other browsers will follow the mechanism used by IE11 and allow webapps
to request permission. The negative effects of the old style of clipboard integration are
no longer an issue.
> {panel:title=IMPORTANT|bgColor=#FFFFEE}
> For this integration to be acceptable, it *MUST NOT* disturb the remote clipboard except
when the local clipboard actually changes. It would be extremely frustrating if the user copies
something not supported for the Guacamole clipboard, like a file, only to find it immediately
overwritten by the text they copied previously.
> {panel}

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