From 73d183120b00ac4205db04e83840ea288513e549 Mon Sep 17 00:00:00 2001
From: MrOtherGuy <jastekken@outlook.com>
Date: Fri, 24 Oct 2025 06:01:52 +0300
Subject: [PATCH] Show autohiding toolbars when a window modal dialog is open.

Toolbar layout properties, notably --urlbar-container-height, is
re-computed when window modal dialog is closed and the values would be
totally incorrect if the toolbars are hidden at that time. This fixes #582
and likely several other issues as well.
---
 chrome/autohide_bookmarks_and_main_toolbars.css | 9 ++++++++-
 chrome/autohide_toolbox.css                     | 4 ++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/chrome/autohide_bookmarks_and_main_toolbars.css b/chrome/autohide_bookmarks_and_main_toolbars.css
index a7b3245..2c64db1 100644
--- a/chrome/autohide_bookmarks_and_main_toolbars.css
+++ b/chrome/autohide_bookmarks_and_main_toolbars.css
@@ -20,7 +20,7 @@ See the above repository for updates as well as full license text. */
   --uc-navbar-height: 0px;
 }
 /* At least on Windows 10 display scaling > 100% causes 1px gap to appear below tabs depending on Firefox
- *  density settings and whether or not menubar is enabled. 
+ *  density settings and whether or not menubar is enabled.
  */
 @media (min-resolution: 120dpi){
   :root[uidensity="compact"] #navigator-toolbox:has(> #toolbar-menubar:is([autohide="false"],not([autohide]))){
@@ -80,6 +80,7 @@ See the above repository for updates as well as full license text. */
   transform-origin: 0px calc((var(--urlbar-container-height) - var(--urlbar-height)) / 2);
   transform: rotateX(89.5deg);
 }
+:root[window-modal-open] #urlbar[popover],
 #mainPopupSet:has(> [panelopen]:not(#ask-chat-shortcuts,#selection-shortcut-action-panel,#chat-shortcuts-options-panel,#tab-preview-panel)) ~ toolbox #urlbar[popover],
 #navigator-toolbox:is(:hover,:focus-within) #urlbar[popover],
 #urlbar-container > #urlbar[popover]:is([focused],[open]){
@@ -113,6 +114,12 @@ See the above repository for updates as well as full license text. */
 /* Selected tab needs higher z-index now to "hide" the broder below it */
 .tabbrowser-tab[selected]{ z-index: 3 !important; }
 
+/* Show toolbars when a window modal dialog is open, otherwise toolbar layout breaks after closing the dialog */
+:root[window-modal-open] :is(#nav-bar,#PersonalToolbar){
+  transition-delay: 100ms !important;
+  transform: rotateX(0);
+}
+
 /* SELECT TOOLBAR BEHAVIOR */
 /* Comment out or delete one of these to disable that behavior */
 
diff --git a/chrome/autohide_toolbox.css b/chrome/autohide_toolbox.css
index f4adcd1..96c60f8 100644
--- a/chrome/autohide_toolbox.css
+++ b/chrome/autohide_toolbox.css
@@ -42,6 +42,8 @@ See the above repository for updates as well as full license text. */
   transform-origin: 0px calc(0px - var(--tab-min-height) - var(--tab-block-margin) * 2);
   transform: rotateX(89.9deg);
 }
+
+:root[window-modal-open] #urlbar[popover],
 #mainPopupSet:has(> [panelopen]:not(#ask-chat-shortcuts,#selection-shortcut-action-panel,#chat-shortcuts-options-panel,#tab-preview-panel)) ~ toolbox #urlbar[popover],
 #navigator-toolbox:is(:hover,:focus-within,[movingtab]) #urlbar[popover],
 #urlbar-container > #urlbar[popover]:is([focused],[open]){
@@ -50,6 +52,8 @@ See the above repository for updates as well as full license text. */
   transition-delay: 33ms;
   transform: rotateX(0deg);
 }
+
+:root[window-modal-open] #navigator-toolbox,
 #mainPopupSet:has(> [panelopen]:not(#ask-chat-shortcuts,#selection-shortcut-action-panel,#chat-shortcuts-options-panel,#tab-preview-panel)) ~ toolbox,
 #navigator-toolbox:has(#urlbar:is([open],[focus-within])),
 #navigator-toolbox:is(:hover,:focus-within,[movingtab]){