panel: Remove aggregate menu

The menu has served us well over the years, but it is finally time
to retire it.

         τετέλεσται

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2408>

data/theme/gnome-shell-sass/widgets/_popovers.scss

@@ -164,28 +164,6 @@
   -arrow-rise: 0px; // hide the beak on the menu
 }
 
-// system status menu
-.aggregate-menu {
-  min-width: 22em;
-
-  // this is unneeded at the top-level in this menu, hide it
-  .popup-menu-ornament { width: 0 !important; }
-
-  // lock screen, shutdown, etc. buttons
-  .popup-menu-icon {
-    -st-icon-style: symbolic;
-    &:ltr {margin-right: $base_margin*2;}
-    &:rtl {margin-left: $base_margin*2;}
-  }
-
-  // account for ornaments in submenus with padding
-  .popup-sub-menu .popup-menu-item > :first-child {
-    // this value is hardcoded for visual effect
-    &:ltr { margin-left: 1em;}
-    &:rtl { margin-right: 1em;}
-  }
-}
-
 // right-click (and panel) app menu
 .app-menu {
   max-width: 27.25em;

js/ui/panel.js

@@ -332,49 +332,6 @@ class UnsafeModeIndicator extends SystemIndicator {
     }
 });
 
-var AggregateLayout = GObject.registerClass(
-class AggregateLayout extends Clutter.BoxLayout {
-    _init(params = {}) {
-        params['orientation'] = Clutter.Orientation.VERTICAL;
-        super._init(params);
-
-        this._sizeChildren = [];
-    }
-
-    addSizeChild(actor) {
-        this._sizeChildren.push(actor);
-        this.layout_changed();
-    }
-
-    vfunc_get_preferred_width(container, forHeight) {
-        let themeNode = container.get_theme_node();
-        let minWidth = themeNode.get_min_width();
-        let natWidth = minWidth;
-
-        for (let i = 0; i < this._sizeChildren.length; i++) {
-            let child = this._sizeChildren[i];
-            let [childMin, childNat] = child.get_preferred_width(forHeight);
-            minWidth = Math.max(minWidth, childMin);
-            natWidth = Math.max(natWidth, childNat);
-        }
-        return [minWidth, natWidth];
-    }
-});
-
-var AggregateMenu = GObject.registerClass(
-class AggregateMenu extends PanelMenu.Button {
-    _init() {
-        super._init(0.0, C_("System menu in the top bar", "System"), false);
-        this.menu.actor.add_style_class_name('aggregate-menu');
-
-        let menuLayout = new AggregateLayout();
-        this.menu.box.set_layout_manager(menuLayout);
-
-        this._indicators = new St.BoxLayout({ style_class: 'panel-status-indicators-box' });
-        this.add_child(this._indicators);
-    }
-});
-
 var QuickSettings = GObject.registerClass(
 class QuickSettings extends PanelMenu.Button {
     _init() {
@@ -453,7 +410,6 @@ class QuickSettings extends PanelMenu.Button {
 
 const PANEL_ITEM_IMPLEMENTATIONS = {
     'activities': ActivitiesButton,
-    'aggregateMenu': AggregateMenu,
     'appMenu': AppMenuButton,
     'quickSettings': QuickSettings,
     'dateMenu': imports.ui.dateMenu.DateMenuButton,

js/ui/sessionMode.js

@@ -59,7 +59,7 @@ const _modes = {
         panel: {
             left: [],
             center: ['dateMenu'],
-            right: ['dwellClick', 'a11y', 'keyboard', 'quickSettings', 'aggregateMenu'],
+            right: ['dwellClick', 'a11y', 'keyboard', 'quickSettings'],
         },
         panelStyle: 'login-screen',
     },
@@ -71,7 +71,7 @@ const _modes = {
         panel: {
             left: [],
             center: [],
-            right: ['dwellClick', 'a11y', 'keyboard', 'quickSettings', 'aggregateMenu'],
+            right: ['dwellClick', 'a11y', 'keyboard', 'quickSettings'],
         },
         panelStyle: 'unlock-screen',
     },
@@ -94,7 +94,7 @@ const _modes = {
         panel: {
             left: ['activities', 'appMenu'],
             center: ['dateMenu'],
-            right: ['screenRecording', 'screenSharing', 'dwellClick', 'a11y', 'keyboard', 'quickSettings', 'aggregateMenu'],
+            right: ['screenRecording', 'screenSharing', 'dwellClick', 'a11y', 'keyboard', 'quickSettings'],
         },
     },
 };