Move ownership/control of debug signal to GObject

We've been having a problem in GNOME 46 with GSConnect not responding
to the toggling of the "debug" setting, seemingly not being delivered
the `changed::debug` signal at all. Let's make it a property of the
`GSConnectManager` GObject instead.

Author: ferdnyc

src/service/init.js

@@ -138,20 +138,17 @@ const _debugFunc = function (error, prefix = null) {
     });
 };
 
-// Swap the function out for a no-op anonymous function for speed
+globalThis._debugFunc = _debugFunc;
+
 const settings = new Gio.Settings({
     settings_schema: Config.GSCHEMA.lookup(Config.APP_ID, true),
 });
-
-settings.connect('changed::debug', (settings, key) => {
-    globalThis.debug = settings.get_boolean(key) ? _debugFunc : () => {};
-});
-
-if (settings.get_boolean('debug'))
-    globalThis.debug = _debugFunc;
-else
+if (settings.get_boolean('debug')) {
+    globalThis.debug = globalThis._debugFunc;
+} else {
+    // Swap the function out for a no-op anonymous function for speed
     globalThis.debug = () => {};
-
+}
 
 /**
  * Start wl_clipboard if not under Gnome

src/service/manager.js

@@ -35,6 +35,13 @@ const Manager = GObject.registerClass({
             GObject.ParamFlags.READABLE,
             false
         ),
+        'debug': GObject.ParamSpec.boolean(
+            'debug',
+            'Debug',
+            'Whether debug logging is enabled in GSConnect',
+            GObject.ParamFlags.READWRITE,
+            false
+        ),
         'discoverable': GObject.ParamSpec.boolean(
             'discoverable',
             'Discoverable',
@@ -85,6 +92,21 @@ const Manager = GObject.registerClass({
         return this._backends;
     }
 
+    get debug() {
+        if (this._debug === undefined)
+            this._debug = this.settings.get_boolean('debug');
+
+        return this._debug;
+    }
+
+    set debug(value) {
+        if (this._debug === value)
+            return;
+
+        this._debug = value;
+        this._onDebugChanged(this._debug);
+    }
+
     get devices() {
         if (this._devices === undefined)
             this._devices = new Map();
@@ -203,11 +225,20 @@ const Manager = GObject.registerClass({
             this.settings.set_string('name', GLib.get_host_name());
 
         // Bound Properties
+        this.settings.bind('debug', this, 'debug', 0);
         this.settings.bind('discoverable', this, 'discoverable', 0);
         this.settings.bind('id', this, 'id', 0);
         this.settings.bind('name', this, 'name', 0);
     }
 
+    _onDebugChanged(debug = false) {
+        // If debugging is disabled, install a no-op for speed
+        if (debug && globalThis._debugFunc !== undefined)
+            globalThis.debug = globalThis._debugFunc;
+        else
+            globalThis.debug = () => {};
+    }
+
     /*
      * Backends
      */
@@ -512,4 +543,3 @@ const Manager = GObject.registerClass({
 });
 
 export default Manager;
-