I just found out that a similar project which also includes Chrome support exists: https://github.com/segv/jss
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Since version 15 Mozilla Firefox comes with a remote debugging protocol. This was introduced to support debugging for Firefox on Android and FirefoxOS. But it can also be activated for regular Firefox although it requires a bit of extra work at the moment (Firefox 19).
This Emacs package provides a basic implementation of the protocol for Emacs. So far only the lowlevel communication structure is done.
Go to about:config
and set the following paramters:
devtools.debugger.remote-enabled
to true
and devtools.debugger.force-local
to false
and devtools.chrome.enabled
to true
and restarted firefox.
Open a Scratchpad (Shift+F4 or WebDeveloper menu entry) and select in the Environment menu the “Browser” option. Copy and paste the following script and eval it with C-r.
- https://developer.mozilla.org/en-US/docs/Tools/Scratchpad#Using_Scratchpad_to_access_Firefox_internals
- https://bugzilla.mozilla.org/show_bug.cgi?id=836410#c0
const Cu = Components.utils;
Cu.import("resource://gre/modules/devtools/dbg-server.jsm");
function startDebuggerServer()
{
// Start the server.
if (!DebuggerServer.initialized) {
DebuggerServer.init();
DebuggerServer.addBrowserActors();
}
// For an nsIServerSocket we do this:
DebuggerServer.openListener(6000); // A connection on port 6000.
}
startDebuggerServer();
- https://wiki.mozilla.org/Remote_Debugging_Protocol
- https://wiki.mozilla.org/DevTools/Features/Debugger/Notes
- https://github.com/paulrouget/firefox-remote-styleEditors
(let ((con (firefox-remote-connect "localhost" 6000)))
(firefox-remote-send con '((to . root) (type . listTabs))
(lambda (data)
(let* ((selected (cdr (assq 'selected data)))
(tabs (cdr (assq 'tabs data)))
(current-tab (aref tabs selected))
(url (cdr (assq 'url current-tab)))
(title (cdr (assq 'title current-tab))))
(message "Current Tab \"%s\": \"%s\"" title url))))
(sleep-for 10)
(firefox-remote-disconnect con))
This should print the title and url of the currently selected tab to the
*Messages*
buffer.