Catch the error if GTop is not installed to let this extension be loaded normally and log the error logs for it. I assume other dependencies () are installed from the first place.

Fixes: #79 Missing GTop when installed from flatpak under EndlessOS

Author: nlpsuge

ui/autoclose.js

@@ -1,7 +1,7 @@
 
 'use strict';
 
-const { Clutter, Gio, GLib, GObject, Meta, Shell, St, Atk, Pango, GTop } = imports.gi;
+const { Clutter, Gio, GLib, GObject, Meta, Shell, St, Atk, Pango } = imports.gi;
 
 const ExtensionUtils = imports.misc.extensionUtils;
 const Me = ExtensionUtils.getCurrentExtension();
@@ -20,6 +20,13 @@ const Main = imports.ui.main;
 
 const Log = Me.imports.utils.log;
 
+let GTop = null;
+try {
+    GTop = imports.gi.GTop;
+} catch (e) {
+    Log.Log.getDefault().error(e, `GTop is not installed, I highly recommend to install it, so that a process can be closed safely. How to install it? Please visit: https://github.com/nlpsuge/gnome-shell-extension-another-window-session-manager#dependencies .`);
+}
+
 const PrefsUtils = Me.imports.utils.prefsUtils;
 const FileUtils = Me.imports.utils.fileUtils;
 const SubprocessUtils = Me.imports.utils.subprocessUtils;
@@ -552,6 +559,13 @@ var RunningApplicationListWindow = GObject.registerClass({
         }
 
         _prepareToConfirm() {
+            if (!GTop) {
+                // Since the gtop is not installed, we close the system directly (if there are no apps running). 
+                // The process of apps may be still running to save data to disk, etc.
+                this._confirm();
+                return;
+            }
+
             if (this._checkProcessStateId) return;
 
             this._applicationSection.title = `Waiting below processes to exit, this may take a while…`;