frontend: make taskmanager load processes async

also closes #2981

bottles/frontend/views/bottle_details.py

@@ -109,6 +109,7 @@ def __init__(self, details, config, **kwargs):
         self.manager = details.window.manager
         self.stack_bottle = details.stack_bottle
         self.leaflet = details.leaflet
+        self.details = details
         self.config = config
         self.show_hidden = False
 
@@ -149,7 +150,6 @@ def __init__(self, details, config, **kwargs):
             "flatpak/black-screen-or-silent-crash"
         )
 
-
         if "FLATPAK_ID" in os.environ:
             '''
             If Flatpak, show the btn_flatpak_doc widget to reach
@@ -162,6 +162,8 @@ def __change_page(self, _widget, page_name):
         This function try to change the page based on user choice, if
         the page is not available, it will show the "bottle" page.
         """
+        if page_name == "taskmanager":
+            self.details.view_taskmanager.update(config=self.config)
         try:
             self.stack_bottle.set_visible_child_name(page_name)
             self.leaflet.navigate(Adw.NavigationDirection.FORWARD)

bottles/frontend/views/bottle_taskmanager.py

@@ -88,29 +88,39 @@ def update(self, widget=False, config: Optional[BottleConfig] = None):
         This function scan for new processed and update the
         liststore_processes with the new data
         """
-        if config is None:
-            config = BottleConfig()
-        self.config = config
-        if not config.Runner:
-            return
-
         self.liststore_processes.clear()
-        winebridge = WineBridge(config)
 
-        if winebridge.is_available():
-            processes = winebridge.get_procs()
-        else:
-            winedbg = WineDbg(config)
-            processes = winedbg.get_processes()
-
-        if len(processes) > 0:
-            for process in processes:
-                self.liststore_processes.append([
-                    process.get("pid"),
-                    process.get("name", "n/a"),
-                    process.get("threads", "0"),
-                    # process.get("parent", "0")
-                ])
+        def fetch_processes(config: Optional[BottleConfig] = None):
+            if config is None:
+                config = BottleConfig()
+            self.config = config
+            if not config.Runner:
+                return
+
+            winebridge = WineBridge(config)
+
+            if winebridge.is_available():
+                processes = winebridge.get_procs()
+            else:
+                winedbg = WineDbg(config)
+                processes = winedbg.get_processes()
+            return processes
+
+        def update_processes(processes: list, *_args):
+            if len(processes) > 0:
+                for process in processes:
+                    self.liststore_processes.append([
+                        process.get("pid"),
+                        process.get("name", "n/a"),
+                        process.get("threads", "0"),
+                        # process.get("parent", "0")
+                    ])
+
+        RunAsync(
+            task_func=fetch_processes,
+            callback=update_processes,
+            config=config
+        )
 
     def sensitive_update(self, widget):
         @GtkUtils.run_in_main_loop