[gnome-shell/wip/snwh/appgrid-regression-fixes] status/bluetooth: Bail out and hide UI when there's no adapter

[Sam Hewitt <snwh src gnome org>]

commit 1d9801e9b648dd2bca1db41be2ab1e7880f65ff2
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Mon Jan 31 23:40:39 2022 +0100

    status/bluetooth: Bail out and hide UI when there's no adapter
    
    While _sync() does already handle the case where there's no adapter just
    fine (hiding the item and the indicator), let's make the handling a bit
    more obvious and add an explicit check for !this._adapter where we bail
    out and hide the UI.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2188>

 js/ui/status/bluetooth.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/status/bluetooth.js b/js/ui/status/bluetooth.js
index a7768c824e..d84bc3ad56 100644
--- a/js/ui/status/bluetooth.js
+++ b/js/ui/status/bluetooth.js
@@ -130,13 +130,20 @@ class Indicator extends PanelMenu.SystemIndicator {
     }
 
     _sync() {
-        let devices = this._getDeviceInfos();
+        const adapterJustAppeared = !this._adapter && this._client.default_adapter;
+        this._adapter = this._client.default_adapter ?? null;
+        if (!this._adapter) {
+            this._item.visible = false;
+            this._indicator.visible = false;
+            return;
+        }
+
+        const devices = this._getDeviceInfos();
         const connectedDevices = devices.filter(dev => dev.connected);
         const nConnectedDevices = connectedDevices.length;
 
-        if (this._client.default_adapter && this._adapter)
+        if (!adapterJustAppeared)
             this._setHadSetupDevices(devices.length > 0);
-        this._adapter = this._client.default_adapter ?? null;
 
         let sensitive = !Main.sessionMode.isLocked && !Main.sessionMode.isGreeter;