fancy notifs

Shell/ShellStateManager.qml

@@ -19,7 +19,9 @@ QtObject {
     property bool appUsageLoaded: false
     property var windowRequests: ({})
     property var quickSettingsPayload: ({})
-    property var globals: ({})
+    property var globals: ({
+        "notifications.stackPreviewEnabled": true
+    })
 
     signal shellOpened
     signal shellClosed
@@ -198,10 +200,24 @@ QtObject {
     }
 
     function setGlobal(key, value) {
-        globals[key] = value;
+        var updated = Object.assign({}, globals);
+        updated[key] = value;
+        globals = updated;
     }
 
     function global(key, defaultValue) {
         return globals.hasOwnProperty(key) ? globals[key] : defaultValue;
     }
+
+    function notificationStackPreviewEnabled() {
+        return Boolean(global("notifications.stackPreviewEnabled", true));
+    }
+
+    function setNotificationStackPreviewEnabled(enabled) {
+        setGlobal("notifications.stackPreviewEnabled", Boolean(enabled));
+    }
+
+    function toggleNotificationStackPreviewEnabled() {
+        setNotificationStackPreviewEnabled(!notificationStackPreviewEnabled());
+    }
 }