this post was submitted on 31 Jul 2023
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Firefox CSS

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Pushing the limits of the Firefox Browser through the use of CSS.

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How can I make userChrome.js work? (self.firefoxcss)
submitted 1 year ago by TheTwelveYearOld to c/firefoxcss
1 comments fedilink hide all child comments
 

I have enabled everything to make userChrome.css work, but it doesn't seem like any JS works when I paste it into a userChrome.js file in my chrome folder, including this JS snippet, it could be because I'm on macOS. I should note that the chrome folder is not in my profile directory, its somewhere else and symlinked to that profile and 4 others.

(function(){
  _ucUtils.registerHotkey(
  {
    id: "testKey",
    key: "g",
    modifiers: "Ctrl br Alt",
    
  },
  function(win,hotkey){
    const doc = win.document;
    const bmtb = CustomizableUI.AREA_BOOKMARKS;
    CustomizableUI.setToolbarVisibility(
      bmtb,
      doc.getElementById(bmtb).getAttribute("collapsed")==="true");
  });
})();

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[โ€“] WestwardWinds 2 points 1 year ago* (last edited 1 year ago)

I am on MacOS. I can't help you in regards to the linked profile directory, if you think it needs to be set that way I believe you. But, I did set up userChrome.css the other day and I couldn't get it to work until I went to about:config and toggled the following to True:

toolkit.legacyUserProfileCustomizations.stylesheets
layers.acceleration.force-enabled
gfx.webrender.all
gfx.webrender.enabled
layout.css.backdrop-filter.enabled
svg.context-properties.content.enabled

Now this is specifically what I did for a userChrome.css not .js but most guides I found only said to toggle toolkit.legacyUserProfileCustomizations.stylesheets but it only worked with those additional flags set to True as well. Maybe this will help you out some.