💄 Don't duplicate browser close buttons

Author: trickypr

src/browser/base/content/browser-verticaltabs.js

@@ -176,9 +176,7 @@ var VerticalTabs = {
     this.arrowScrollbox?.setAttribute('orient', 'vertical')
     this.tabBrowserTabs?.setAttribute('orient', 'vertical')
 
-    document
-      .getElementById('navigator-toolbox-background')
-      ?.setAttribute('verticaltabs', 'true')
+    document.getElementById('main-window')?.setAttribute('verticaltabs', 'true')
     document
       .querySelector('#TabsToolbar .toolbar-items')
       ?.setAttribute('align', 'start')
@@ -225,9 +223,7 @@ var VerticalTabs = {
     this.arrowScrollbox?.setAttribute('orient', 'horizontal')
     this.tabBrowserTabs?.setAttribute('orient', 'horizontal')
 
-    document
-      .getElementById('navigator-toolbox-background')
-      ?.removeAttribute('verticaltabs')
+    document.getElementById('main-window')?.removeAttribute('verticaltabs')
     document
       .querySelector('#TabsToolbar .toolbar-items')
       ?.setAttribute('align', 'end')

src/browser/themes/pulse/vertical_tabs.css

@@ -23,7 +23,7 @@
   display: none;
 }
 
-#navigator-toolbox-background[verticaltabs='true'] #titlebar {
+#main-window[verticaltabs='true'] #titlebar {
   display: none;
 }
 
@@ -103,16 +103,14 @@
 /* Border radius up at the top left of the browser when vertical tabs are enabled */
 @media (-moz-gtk-csd-available) {
   :root[tabsintitlebar][sizemode='normal']:not([gtktiledwindow='true'])
-    #navigator-toolbox-background[verticaltabs='true']
+    #main-window[verticaltabs='true']
     #nav-bar {
     border-top-left-radius: env(-moz-gtk-csd-titlebar-radius);
     border-top-right-radius: env(-moz-gtk-csd-titlebar-radius);
   }
 }
 
-#navigator-toolbox-background:not([verticaltabs='true'])
-  #nav-bar
-  .titlebar-buttonbox-container {
+#main-window:not([verticaltabs='true']) #nav-bar .titlebar-buttonbox-container {
   display: none;
 }