MSFX/chrome/space_and_separator_restorer.uc.js

// Restore 'Space & Separator' items script for Firefox 60+ by Aris
//
// Default browser scripts always remove spaces and separators from default palette, so
// because of that they are added to an own toolbar now.
//
// - spaces and separators can be moved to any toolbar
// - to remove spaces or separators move them into palette
// - configuration toolbar behaves like a default toolbar, items and buttons can be placed on it
// - configuration toolbar is not visible outside customizing mode
// - default "Flexible Space" item is hidden from palette and added to configuration toolbar
// [!] BUG: do not move spaces, flexible spaces or separator to configuration toolbar or it will cause glitches
// [!] BUG: do not move main 'space'-item to palette or it will be hidden until customizing mode gets reopened

// [!] Fix for WebExtensions with own windows by 黒仪大螃蟹 (for 1-N scripts)
(function () {
  Components.utils.import("resource:///modules/CustomizableUI.jsm");
  var appversion = parseInt(Services.appinfo.version);

  var AddSeparator = {
    init: function () {
      if (
        appversion >= 76 &&
        location != "chrome://browser/content/browser.xhtml"
      )
        return;

      try {
        document
          .getElementById("back-button")
          .setAttribute("removable", "true");
        document
          .getElementById("forward-button")
          .setAttribute("removable", "true");
      } catch (e) {}

      /* blank tab workaround */
      try {
        if (gBrowser.selectedBrowser.getAttribute("blank"))
          gBrowser.selectedBrowser.removeAttribute("blank");
      } catch (e) {}

      var tb_config_label = "Configuration Toolbar";
      var tb_spacer_label = "Space";
      var tb_sep_label = "Separator";
      var tb_spring_label = "Flexible Space";

      try {
        if (document.getElementById("configuration_toolbar") == null) {
          if (appversion <= 62)
            var tb_config = document.createElement("toolbar");
          else var tb_config = document.createXULElement("toolbar");
          tb_config.setAttribute("id", "configuration_toolbar");
          tb_config.setAttribute("customizable", "true");
          tb_config.setAttribute(
            "class",
            "toolbar-primary chromeclass-toolbar browser-toolbar customization-target"
          );
          tb_config.setAttribute("mode", "icons");
          tb_config.setAttribute("iconsize", "small");
          tb_config.setAttribute("toolboxid", "navigator-toolbox");
          tb_config.setAttribute("lockiconsize", "true");
          tb_config.setAttribute("ordinal", "1005");
          tb_config.setAttribute(
            "defaultset",
            "toolbarspacer,toolbarseparator"
          );

          document.querySelector("#navigator-toolbox").appendChild(tb_config);

          CustomizableUI.registerArea("configuration_toolbar", {
            legacy: true,
          });
          if (appversion >= 65) CustomizableUI.registerToolbarNode(tb_config);

          if (appversion <= 62) var tb_label = document.createElement("label");
          else var tb_label = document.createXULElement("label");
          tb_label.setAttribute("label", tb_config_label + ": ");
          tb_label.setAttribute("value", tb_config_label + ": ");
          tb_label.setAttribute("id", "tb_config_tb_label");
          tb_label.setAttribute("removable", "false");

          tb_config.appendChild(tb_label);

          if (appversion <= 62)
            var tb_spacer = document.createElement("toolbarspacer");
          else var tb_spacer = document.createXULElement("toolbarspacer");
          tb_spacer.setAttribute("id", "spacer");
          tb_spacer.setAttribute("class", "chromeclass-toolbar-additional");
          tb_spacer.setAttribute("customizableui-areatype", "toolbar");
          tb_spacer.setAttribute("removable", "false");
          tb_spacer.setAttribute("label", tb_spacer_label);

          tb_config.appendChild(tb_spacer);

          if (appversion <= 62)
            var tb_sep = document.createElement("toolbarseparator");
          else var tb_sep = document.createXULElement("toolbarseparator");
          tb_sep.setAttribute("id", "separator");
          tb_sep.setAttribute("class", "chromeclass-toolbar-additional");
          tb_sep.setAttribute("customizableui-areatype", "toolbar");
          tb_sep.setAttribute("removable", "false");
          tb_sep.setAttribute("label", tb_sep_label);

          tb_config.appendChild(tb_sep);

          if (appversion <= 62)
            var tb_spring = document.createElement("toolbarspring");
          else var tb_spring = document.createXULElement("toolbarspring");
          tb_spring.setAttribute("id", "spring");
          tb_spring.setAttribute("class", "chromeclass-toolbar-additional");
          tb_spring.setAttribute("customizableui-areatype", "toolbar");
          tb_spring.setAttribute("removable", "false");
          tb_spring.setAttribute("flex", "1");
          tb_spring.setAttribute("label", tb_spring_label);

          tb_config.appendChild(tb_spring);

          // CSS
          var sss = Components.classes[
            "@mozilla.org/content/style-sheet-service;1"
          ].getService(Components.interfaces.nsIStyleSheetService);

          var uri = Services.io.newURI(
            "data:text/css;charset=utf-8," +
              encodeURIComponent(
                '\
	  \
		#configuration_toolbar { \
	      -moz-appearance: none !important; \
		  background-color: var(--toolbar-bgcolor); \
		  background-image: var(--toolbar-bgimage); \
		  background-clip: padding-box; \
		  color: var(--toolbar-color, inherit); \
		} \
		#main-window:not([customizing]) #configuration_toolbar { \
		  visibility: collapse; \
		}\
		#main-window[customizing] #configuration_toolbar #tb_config_tb_label { \
		  font-weight: bold !important; \
		}\
		#main-window[customizing] #configuration_toolbar :-moz-any(#spacer,#separator,#spring) { \
		  -moz-margin-start: 20px; \
		}\
		#main-window[customizing] #configuration_toolbar :-moz-any(#wrapper-spacer,#wrapper-separator,#wrapper-spring) .toolbarpaletteitem-label { \
		  display: block !important; \
		  -moz-margin-end: 20px; \
		}\
		#main-window[customizing] #wrapper-spacer #spacer { \
		  margin: 2px 0 !important; \
		}\
		#main-window[customizing] #configuration_toolbar #wrapper-spring #spring { \
		  margin: -1px 0 !important; \
		  min-width: 80px !important; \
		}\
		#main-window[customizing] #configuration_toolbar > * { \
		  padding: 10px !important; \
		}\
		#main-window[customizing] #configuration_toolbar > :-moz-any(#wrapper-spacer,#wrapper-separator,#wrapper-spring) { \
		  border: 1px dotted !important; \
		  -moz-margin-start: 2px !important; \
		  -moz-margin-end: 2px !important; \
		}\
		#main-window[customizing] toolbarspacer { \
		  border: 1px solid !important; \
		}\
		toolbar[orient="vertical"] toolbarseparator { \
		  -moz-appearance: none !important; \
		  border-top: 1px solid rgba(15,17,38, 0.5) !important; \
		  border-bottom: 1px solid rgba(255,255,255, 0.3) !important; \
		  margin: 2px 2px !important; \
		  height: 1px !important; \
		  width: 18px !important; \
		}\
		toolbar[orient="vertical"] toolbarspacer { \
		  -moz-appearance: none !important; \
		  height: 18px !important; \
		  width: 18px !important; \
		}\
		#customization-palette toolbarpaletteitem[id^="wrapper-customizableui-special-spring"], \
		#customization-palette-container :-moz-any(#spring,#wrapper-spring) { \
		  display: none !important; \
		}\
		#main-window:not([customizing]) toolbar:not(#configuration_toolbar) toolbarspring {\
		  max-width: 100% !important; \
		}\
	  \
	  '
              ),
            null,
            null
          );

          sss.loadAndRegisterSheet(uri, sss.AGENT_SHEET);
        }
      } catch (e) {}
    },
  };

  /* initialization delay workaround */
  document.addEventListener("DOMContentLoaded", AddSeparator.init(), false);
  /* Use the below code instead of the one above this line, if issues occur */
  /*
setTimeout(function(){
  AddSeparator.init();
},2000);
*/
})();