Add an optional logging output widget to the app

src/aiidalab_qe/app/main.py

@@ -5,6 +5,7 @@
 
 from pathlib import Path
 
+import ipywidgets as ipw
 from IPython.display import display
 
 from aiidalab_qe.app.static import styles
@@ -20,12 +21,17 @@
 
 class QeApp:
     def __init__(
-        self, process=None, qe_auto_setup=True, bug_report_url=DEFAULT_BUG_REPORT_URL
+        self,
+        process=None,
+        qe_auto_setup=True,
+        bug_report_url=DEFAULT_BUG_REPORT_URL,
+        show_log=False,
     ):
         """Initialize the AiiDAlab QE application with the necessary setup."""
 
         self.process = process
         self.qe_auto_setup = qe_auto_setup
+        self.log_widget = None
 
         self._load_styles()
 
@@ -34,6 +40,30 @@ def __init__(
         self.view = AppWrapperView()
         display(self.view)
 
+        if show_log:
+            self.log_widget = ipw.Output(
+                layout=ipw.Layout(
+                    border="solid 1px lightgray",
+                    margin="2px",
+                    padding="5px",
+                ),
+            )
+            reset_button = ipw.Button(
+                description="Clear log",
+                button_style="primary",
+                icon="trash",
+                layout=ipw.Layout(width="fit-content"),
+            )
+            reset_button.on_click(lambda _: self.log_widget.clear_output())
+            display(
+                ipw.VBox(
+                    children=[
+                        reset_button,
+                        self.log_widget,
+                    ],
+                )
+            )
+
         # Set up bug report handling (if a URL is provided)
         if bug_report_url:
             install_create_github_issue_exception_handler(
@@ -52,7 +82,10 @@ def _load_styles(self):
 
     def load(self):
         """Initialize the WizardApp and integrate the app into the main view."""
-        self.app = WizardApp(qe_auto_setup=self.qe_auto_setup)
+        self.app = WizardApp(
+            qe_auto_setup=self.qe_auto_setup,
+            log_widget=self.log_widget,
+        )
         self.view.main.children = [self.app]
         # load a previous calculation if it is provided
         if self.process:

src/aiidalab_qe/app/result/__init__.py

@@ -23,6 +23,7 @@ class ViewQeAppWorkChainStatusAndResultsStep(QeDependentWizardStep[ResultsStepMo
     )
 
     def __init__(self, model: ResultsStepModel, **kwargs):
+        self.log_widget = kwargs.pop("log_widget", None)
         super().__init__(model=model, **kwargs)
         self.observe(
             self._on_previous_step_state_change,
@@ -130,6 +131,7 @@ def _post_render(self):
                 self._update_status,
                 self._update_state,
             ],
+            log_widget=self.log_widget,
         )
         ipw.dlink(
             (self._model, "process_uuid"),

src/aiidalab_qe/app/wizard_app.py

@@ -23,13 +23,15 @@ class WizardApp(ipw.VBox):
     # The PK or UUID of the work chain node.
     process = tl.Union([tl.Unicode(), tl.Int()], allow_none=True)
 
-    def __init__(self, qe_auto_setup=True):
+    def __init__(self, qe_auto_setup=True, **kwargs):
         # Initialize the models
         self.structure_model = StructureStepModel()
         self.configure_model = ConfigurationStepModel()
         self.submit_model = SubmissionStepModel()
         self.results_model = ResultsStepModel()
 
+        log_widget = kwargs.pop("log_widget", None)
+
         # Create the application steps
         self.structure_step = StructureSelectionStep(
             model=self.structure_model,
@@ -46,6 +48,7 @@ def __init__(self, qe_auto_setup=True):
         )
         self.results_step = ViewQeAppWorkChainStatusAndResultsStep(
             model=self.results_model,
+            log_widget=log_widget,
         )
 
         # Wizard step observations
@@ -102,7 +105,8 @@ def __init__(self, qe_auto_setup=True):
                 self._process_loading_message,
                 self._wizard_app_widget,
                 InAppGuide(identifier="post-guide"),
-            ]
+            ],
+            **kwargs,
         )
 
         self._wizard_app_widget.selected_index = None