fixes: addressing issues from shelix static analysis tool from GJS

src/ddcutil.ts

@@ -11,7 +11,6 @@ export interface ParsedDisplay {
 // Run a command asynchronously, capturing stdout. The callback always fires:
 // with stdout on success, or an empty string on failure.
 export function runCommandAsync(args: string[], callback: (stdout: string) => void): void {
-    console.log(`${LOG_PREFIX} Running: ${args.join(' ')}`);
     try {
         const subprocess = new Gio.Subprocess({
             argv: args,
@@ -22,7 +21,6 @@ export function runCommandAsync(args: string[], callback: (stdout: string) => vo
         subprocess.communicate_utf8_async(null, null, (proc: Gio.Subprocess | null, result: Gio.AsyncResult) => {
             try {
                 const [, stdout] = (proc ?? subprocess).communicate_utf8_finish(result);
-                console.log(`${LOG_PREFIX} Done: ${stdout.trim().substring(0, 80)}`);
                 callback(stdout);
             } catch (e) {
                 console.error(`${LOG_PREFIX} Command failed: ${e}`);

src/extension.ts

@@ -7,19 +7,20 @@ import { KeybindingManager } from './keybindings.js';
 import { BrightnessIndicator } from './indicator.js';
 
 export default class DDCCBrightness extends Extension {
-    private _settings: Gio.Settings;
+    private _settings: Gio.Settings | null = null;
     private _controller: DisplayController | null = null;
     private _indicator: BrightnessIndicator | null = null;
     private _keybindings: KeybindingManager | null = null;
 
     constructor(metadata: ExtensionMetadata) {
         super(metadata);
-        this._settings = this.getSettings(SCHEMA_ID);
     }
 
     enable() {
         console.log(`${LOG_PREFIX} Enabling extension`);
 
+        this._settings = this.getSettings(SCHEMA_ID);
+
         this._controller = new DisplayController(this._settings);
         this._controller.onDetectComplete = () => this._indicator?.rebuildMenu();
 
@@ -55,5 +56,6 @@ export default class DDCCBrightness extends Extension {
 
         this._controller = null;
         this._indicator = null;
+        this._settings = null;
     }
 }

src/keybindings.ts

@@ -9,6 +9,7 @@ export class KeybindingManager {
     private readonly _settings: Gio.Settings;
     private readonly _actions: KeybindingActions;
     private _bindings: Map<string, number> = new Map();
+    private _changedIds: number[] = [];
 
     constructor(settings: Gio.Settings, actions: KeybindingActions) {
         this._settings = settings;
@@ -21,13 +22,18 @@ export class KeybindingManager {
         }
 
         for (const name of Object.keys(this._actions)) {
-            this._settings.connect(`changed::${name}`, () => {
-                this._refresh(name);
-            });
+            this._changedIds.push(
+                this._settings.connect(`changed::${name}`, () => {
+                    this._refresh(name);
+                }),
+            );
         }
     }
 
     disable(): void {
+        this._changedIds.forEach((id) => this._settings.disconnect(id));
+        this._changedIds = [];
+
         this._bindings.forEach((_, key) => {
             Main.wm.removeKeybinding(key);
         });

src/prefs.ts

@@ -7,10 +7,8 @@ import { KeybindingEntryRow } from './prefs/keybindings.js';
 const SCHEMA_ID = 'org.gnome.shell.extensions.ddcbrightness';
 
 export default class DDCCBrightnessPreferences extends ExtensionPreferences {
-    _settings?: Gio.Settings;
-
     fillPreferencesWindow(window: Adw.PreferencesWindow): Promise<void> {
-        this._settings = this.getSettings(SCHEMA_ID);
+        const settings = this.getSettings(SCHEMA_ID);
 
         const page = new Adw.PreferencesPage({
             title: _('DDC Brightness Control'),
@@ -26,7 +24,7 @@ export default class DDCCBrightnessPreferences extends ExtensionPreferences {
         const vcpCode = new Adw.EntryRow({
             title: _('VCP Code'),
         });
-        vcpCode.set_text(this._settings!.get_string('vcp-code') ?? '10');
+        vcpCode.set_text(settings.get_string('vcp-code') ?? '10');
         ddcGroup.add(vcpCode);
 
         const step = new Adw.SpinRow({
@@ -55,7 +53,7 @@ export default class DDCCBrightnessPreferences extends ExtensionPreferences {
         keybindingGroup.add(
             new KeybindingEntryRow({
                 title: _('Brightness Up'),
-                settings: this._settings!,
+                settings: settings,
                 bind: 'brightness-up',
             }),
         );
@@ -63,14 +61,14 @@ export default class DDCCBrightnessPreferences extends ExtensionPreferences {
         keybindingGroup.add(
             new KeybindingEntryRow({
                 title: _('Brightness Down'),
-                settings: this._settings!,
+                settings: settings,
                 bind: 'brightness-down',
             }),
         );
 
-        this._settings!.bind('vcp-code', vcpCode, 'text', Gio.SettingsBindFlags.DEFAULT);
-        this._settings!.bind('step', step, 'value', Gio.SettingsBindFlags.DEFAULT);
-        this._settings!.bind('link-displays', linkDisplays, 'active', Gio.SettingsBindFlags.DEFAULT);
+        settings.bind('vcp-code', vcpCode, 'text', Gio.SettingsBindFlags.DEFAULT);
+        settings.bind('step', step, 'value', Gio.SettingsBindFlags.DEFAULT);
+        settings.bind('link-displays', linkDisplays, 'active', Gio.SettingsBindFlags.DEFAULT);
 
         window.add(page);
         return Promise.resolve();