Add in-app guide selector

src/aiidalab_qe/app/static/guide.jinja

@@ -38,5 +38,8 @@
     For a more in-depth dive into the app's features, please refer to the
     <a href="https://aiidalab-qe.readthedocs.io/howto/index.html" target="_blank">how-to guides</a>.
   </p>
+
+  <p>
+    Alternatively, you can select one of our in-app guides to walk through an example use-case.
   </p>
 </div>

src/aiidalab_qe/app/wrapper.py

@@ -4,12 +4,11 @@
 
 import ipywidgets as ipw
 import traitlets
+from aiidalab_widgets_base.infobox import InfoBox
 from importlib_resources import files
-from IPython.display import Image, display
+from IPython.display import Image, Javascript, display
 from jinja2 import Environment
 
-from aiidalab_widgets_base.infobox import InfoBox
-
 from aiidalab_qe.app import static
 from aiidalab_qe.version import __version__
 
@@ -62,7 +61,14 @@ def enable_toggles(self) -> None:
     @without_triggering("about_toggle")
     def _on_guide_toggle(self, change: dict):
         """Toggle the guide section."""
-        self._view.info_container.children = [self._view.guide] if change["new"] else []
+        self._view.info_container.children = (
+            [
+                self._view.guide,
+                self._view.guide_selection,
+            ]
+            if change["new"]
+            else []
+        )
         self._view.info_container.layout.display = "flex" if change["new"] else "none"
 
     @without_triggering("guide_toggle")
@@ -71,6 +77,24 @@ def _on_about_toggle(self, change: dict):
         self._view.info_container.children = [self._view.about] if change["new"] else []
         self._view.info_container.layout.display = "flex" if change["new"] else "none"
 
+    def _on_guide_select(self, change: dict):
+        """Toggle the guide section."""
+        display(
+            Javascript(f"""
+                document.querySelectorAll('.{change["old"]}').forEach((guide) => {'{'}
+                    guide.classList.remove('show');
+                {'}'});
+            """)
+        )
+        if (guide_class := change["new"]) != "none":
+            display(
+                Javascript(f"""
+                    document.querySelectorAll('.{guide_class}').forEach((guide) => {'{'}
+                        guide.classList.add('show');
+                    {'}'});
+                """)
+            )
+
     def _on_close_first_time_info(self, _=None):
         """Close the first time info box."""
         self._view.first_time_users_infobox.layout.display = "none"
@@ -81,6 +105,7 @@ def _set_event_handlers(self) -> None:
         """Set up event handlers."""
         self._view.guide_toggle.observe(self._on_guide_toggle, "value")
         self._view.about_toggle.observe(self._on_about_toggle, "value")
+        self._view.guide_selection.observe(self._on_guide_select, "value")
         self._view.close_first_time_info_button.on_click(self._on_close_first_time_info)
 
 
@@ -164,6 +189,16 @@ def __init__(self) -> None:
         self.guide = ipw.HTML(env.from_string(guide_template).render())
         self.about = ipw.HTML(env.from_string(about_template).render())
 
+        self.guide_selection = ipw.RadioButtons(
+            options=[
+                "none",
+                "relaxation",
+                "bands",
+            ],
+            description="Guides",
+            value="none",
+        )
+
         self.info_container = InfoBox()
 
         header = ipw.VBox(