Humanized process status view (#1048)

This PR implements a simplified process status tree that is
- human readable
- collapsible
- linked with advanced node viewer
- resettable (collapse all)
- lazy loaded

src/aiidalab_qe/app/result/components/status/status.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import ipywidgets as ipw
 
 from aiida import orm
@@ -7,6 +9,7 @@
 from aiidalab_widgets_base.viewers import viewer as node_viewer
 
 from .model import WorkChainStatusModel
+from .tree import SimplifiedProcessTree, SimplifiedProcessTreeModel
 
 
 class WorkChainStatusPanel(ResultsComponent[WorkChainStatusModel]):
@@ -15,14 +18,21 @@ def __init__(self, model: WorkChainStatusModel, **kwargs):
         self.node_views = {}  # node-view cache
         self.node_view_loading_message = LoadingWidget("Loading node view")
 
-    def _on_monitor_counter_change(self, _):
-        self._update_process_tree()
-
-    def _on_node_selection_change(self, change):
-        self._update_node_view(change["new"])
-
     def _render(self):
-        self.simplified_status_view = ipw.HTML("Coming soon")
+        model = SimplifiedProcessTreeModel()
+        self.simplified_process_tree = SimplifiedProcessTree(model=model)
+        ipw.dlink(
+            (self._model, "process_uuid"),
+            (model, "process_uuid"),
+        )
+        ipw.dlink(
+            (self._model, "monitor_counter"),
+            (model, "monitor_counter"),
+        )
+        model.observe(
+            self._on_calculation_link_click,
+            "clicked",
+        )
 
         self.process_tree = ProcessNodesTreeWidget()
         self.process_tree.observe(
@@ -34,19 +44,61 @@ def _render(self):
             (self.process_tree, "value"),
         )
 
-        self.node_view_container = ipw.VBox()
+        self.reset_button = ipw.Button(
+            description="Reset to root",
+            button_style="warning",
+            icon="refresh",
+            tooltip="Reseed the process tree with the root node",
+            layout=ipw.Layout(width="fit-content"),
+        )
+        self.reset_button.on_click(self._reset_process_tree)
+
+        self.node_view_container = ipw.VBox(layout=ipw.Layout(height="100%"))
+        self.node_view_container.add_class("node-view-container")
+
+        self.to_advanced_view_button = ipw.Button(
+            description="View in advanced panel",
+            button_style="primary",
+            icon="eye",
+            tooltip="Switch to the advanced view",
+            layout=ipw.Layout(width="fit-content"),
+        )
+        self.to_advanced_view_button.on_click(self._switch_to_advanced_view)
+
+        simplified_tree_container = ipw.VBox(
+            children=[self.simplified_process_tree],
+        )
+
+        simplified_tree_node_view_container = ipw.VBox(
+            children=[
+                self.to_advanced_view_button,
+                self.node_view_container,
+            ],
+        )
+
+        simplified_view = ipw.Box(
+            children=[
+                simplified_tree_container,
+                simplified_tree_node_view_container,
+            ]
+        )
+        simplified_view.add_class("simplified-view")
+
+        advanced_view = ipw.VBox(
+            children=[
+                self.reset_button,
+                self.process_tree,
+                self.node_view_container,
+            ],
+        )
+        advanced_view.add_class("advanced-view")
 
         self.accordion = ipw.Accordion(
             children=[
-                self.simplified_status_view,
-                ipw.VBox(
-                    children=[
-                        self.process_tree,
-                        self.node_view_container,
-                    ],
-                ),
+                simplified_view,
+                advanced_view,
             ],
-            selected_index=1,
+            selected_index=None,
         )
         titles = [
             "Status overview",
@@ -55,8 +107,32 @@ def _render(self):
         for i, title in enumerate(titles):
             self.accordion.set_title(i, title)
 
+        self.accordion.observe(
+            self._on_accordion_change,
+            "selected_index",
+        )
+
+        self.accordion.selected_index = 0
+
         self.children = [self.accordion]
 
+    def _on_monitor_counter_change(self, _):
+        self._update_process_tree()
+
+    def _on_accordion_change(self, change):
+        if change["new"] == 0:
+            self.simplified_process_tree.render()
+
+    def _on_calculation_link_click(self, change):
+        if selected_node_uuid := change["new"]:
+            self.process_tree.value = selected_node_uuid
+
+    def _on_node_selection_change(self, change):
+        self._update_node_view(change["new"])
+
+    def _switch_to_advanced_view(self, _):
+        self.accordion.selected_index = 1
+
     def _update_process_tree(self):
         if self.rendered:
             self.process_tree.update()
@@ -89,3 +165,8 @@ def _update_node_view(self, nodes, refresh=False):
             self.node_view = ipw.HTML("No viewer available for this node.")
 
         self.node_view_container.children = [self.node_view]
+
+    def _reset_process_tree(self, _):
+        if not self.rendered:
+            return
+        self.process_tree.value = self._model.process_uuid