feat: Removed legacy stylesheets config and implement c++ mods backen… (#9131)

src/zen/workspaces/ZenWorkspace.mjs

@@ -2,7 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 {
-  class ZenWorkspace extends MozXULElement {
+  class nsZenWorkspace extends MozXULElement {
     static get markup() {
       return `
         <vbox class="zen-workspace-tabs-section zen-current-workspace-indicator" flex="1" context="zenWorkspaceMoreActions">
@@ -220,5 +220,5 @@
     }
   }
 
-  customElements.define('zen-workspace', ZenWorkspace);
+  customElements.define('zen-workspace', nsZenWorkspace);
 }

src/zen/workspaces/ZenWorkspaceCreation.mjs

@@ -1,5 +1,5 @@
 {
-  class ZenWorkspaceCreation extends MozXULElement {
+  class nsZenWorkspaceCreation extends MozXULElement {
     #wasInCollapsedMode = false;
 
     promiseInitialized = new Promise((resolve) => {
@@ -336,5 +336,5 @@
     }
   }
 
-  customElements.define('zen-workspace-creation', ZenWorkspaceCreation);
+  customElements.define('zen-workspace-creation', nsZenWorkspaceCreation);
 }

src/zen/workspaces/ZenWorkspaceIcons.mjs

@@ -2,7 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 {
-  class ZenWorkspaceIcons extends MozXULElement {
+  class nsZenWorkspaceIcons extends MozXULElement {
     constructor() {
       super();
     }
@@ -181,5 +181,5 @@
     }
   }
 
-  customElements.define('zen-workspace-icons', ZenWorkspaceIcons);
+  customElements.define('zen-workspace-icons', nsZenWorkspaceIcons);
 }

src/zen/workspaces/zen-gradient-generator.css

@@ -124,7 +124,7 @@
 #PanelUI-zen-gradient-generator-custom-list {
   margin-top: 15px;
 
-  &:not(:has(.zen-theme-picker-custom-list-item)) {
+  &:empty {
     display: none;
   }