1405863 - messageManager not working for "bookmarksPanel.xul".

Status: RESOLVED WONTFIX

(Core :: DOM: Content Processes, defect, P4)

Description

[Łukasz]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170809145938

Steps to reproduce:

const frameScriptTextX = `data:,console.log("fstxsidebar");`;
const sidebarWindow = window.document.getElementById("sidebar").contentWindow; // window is browser.xul

const mm = sidebarWindow.messageManager;
mm.loadFrameScript(frameScriptTextX, true);

mm.childCount // return 0


Actual results:

Noting.


Expected results:

Should show a "fstxsidebar" message in BrowserTools console.

Comment 1

[Kohei Yoshino [:kohei]]

Is this an extension code? As you might know, legacy extensions are no longer supported on Firefox 57+ so this bug is probably WONTFIX.

Comment 2

[Łukasz]

@kohei Yes. But MessageManager is a universal Firefox feature that Firefox developers can use.
So I do not see the obstacle to fix it.

Comment 3

[Panos Astithas (he/him) [:past] (please ni?)]

I'm not sure which is the right component for this, but I bet Bill does.

Comment 4

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

This is the right component. I think we'd need a good reason to make this work though. It doesn't seem very useful to me.