feat: [Remote rendering 3.4] server-owned UI panel and theme state

doc/changelog.d/144.added.md

@@ -0,0 +1 @@
+[Remote rendering 3.4] server-owned UI panel and theme state

src/ansys/visor/viewer/app/trame/local_app.py

@@ -17,6 +17,10 @@
     SetBoundingBoxVisibilityPayload,
     SetCrossSectionVisibilityPayload,
     SetEdgesVisiblePayload,
+    SetPanelTopLeftPanelCollapsedPayload,
+    SetPanelTopRightLegendCollapsedPayload,
+    SetPanelTopRightPanelCollapsedPayload,
+    SetPanelTopRightTabIndexPayload,
     SetProjectionPayload,
     SyncCrossSectionPlanePayload,
 )
@@ -76,6 +80,14 @@ def sync_cross_section_plane(
         self, origin: List[float], normal: List[float]
     ) -> None: ...
 
+    def set_panel_top_left_panel_collapsed(self, collapsed: bool) -> None: ...
+
+    def set_panel_top_right_panel_collapsed(self, collapsed: bool) -> None: ...
+
+    def set_panel_top_right_legend_collapsed(self, collapsed: bool) -> None: ...
+
+    def set_panel_top_right_tab_index(self, tab_index: int) -> None: ...
+
 
 # ----------------------------------------------------------------------
 # Trigger payload models
@@ -209,6 +221,10 @@ class LocalApp:
         set_bounding_box_visibility: shows or hides the bounding-box outline
         set_projection: sets parallel or perspective projection on the camera record
         sync_cross_section_plane: records a settled cross-section plane reported by the frontend
+        set_panel_top_left_panel_collapsed: records whether the top-left panel is collapsed
+        set_panel_top_right_panel_collapsed: records whether the top-right panel is collapsed
+        set_panel_top_right_legend_collapsed: records whether the top-right legend is collapsed
+        set_panel_top_right_tab_index: records which top-right tab is active
         set_only_cookie: sets a cookie on the server (note: Trame server only allows a single cookie header)
     Protected Methods:
         _cleanup(): Cleans up the active actor in the visualization pipeline.
@@ -504,6 +520,10 @@ def sync_camera(self, payload) -> None:
     # ``set_projection`` lives here too: it is delivered the same way, but
     # it writes the camera record's projection field rather than a toggle
     # of its own.
+    #
+    # The last four carry UI panel layout, not widget state: no renderer
+    # depends on them, so each coordinator just writes one store field.
+    # Echoes are idempotent for the same reason as the toggles'.
     # ------------------------------------------------------------------
 
     @trigger("set_cross_section_visibility")
@@ -567,6 +587,47 @@ def sync_cross_section_plane(self, payload) -> None:
             return
         api.sync_cross_section_plane(payload.origin, payload.normal)
 
+    @trigger("set_panel_top_left_panel_collapsed")
+    @parse_payload(SetPanelTopLeftPanelCollapsedPayload)
+    def set_panel_top_left_panel_collapsed(self, payload) -> None:
+        """Frontend -> Backend: the top-left panel reports its collapsed state."""
+        api = self._mutation_api("set_panel_top_left_panel_collapsed", payload)
+        if api is None:
+            return
+        api.set_panel_top_left_panel_collapsed(payload.collapsed)
+
+    @trigger("set_panel_top_right_panel_collapsed")
+    @parse_payload(SetPanelTopRightPanelCollapsedPayload)
+    def set_panel_top_right_panel_collapsed(self, payload) -> None:
+        """Frontend -> Backend: the top-right panel reports its collapsed state."""
+        api = self._mutation_api("set_panel_top_right_panel_collapsed", payload)
+        if api is None:
+            return
+        api.set_panel_top_right_panel_collapsed(payload.collapsed)
+
+    @trigger("set_panel_top_right_legend_collapsed")
+    @parse_payload(SetPanelTopRightLegendCollapsedPayload)
+    def set_panel_top_right_legend_collapsed(self, payload) -> None:
+        """Frontend -> Backend: the top-right legend reports its collapsed state."""
+        api = self._mutation_api("set_panel_top_right_legend_collapsed", payload)
+        if api is None:
+            return
+        api.set_panel_top_right_legend_collapsed(payload.collapsed)
+
+    @trigger("set_panel_top_right_tab_index")
+    @parse_payload(SetPanelTopRightTabIndexPayload)
+    def set_panel_top_right_tab_index(self, payload) -> None:
+        """Frontend -> Backend: the top-right panel reports its active tab.
+
+        The index is forwarded verbatim and is never range-checked here; the
+        client's ``selectTab`` is the guard, so a future third tab is a UI
+        change rather than a validation failure at this boundary.
+        """
+        api = self._mutation_api("set_panel_top_right_tab_index", payload)
+        if api is None:
+            return
+        api.set_panel_top_right_tab_index(payload.tab_index)
+
     def set_only_cookie(self, key: str, value: str):
         """
         Sets a cookie on the server. NOTE: there is a limitation

src/ansys/visor/viewer/models/runtime/requests/widget_state_payloads.py

@@ -18,6 +18,15 @@
 carries two three-component vectors rather than a boolean.  It lives here
 rather than beside the per-part models for the same reason the four above
 do: it is scene-wide and carries no ``nodeId``.
+
+The four ``SetPanelTopLeft*`` / ``SetPanelTopRight*`` models carry UI panel
+layout, not widget state, but are here on the same terms: scene-wide, no
+``nodeId``, one absolute field each.  Their echoes are idempotent like a
+toggle's.
+
+``tab_index`` is deliberately unbounded: the client only ever sends ``0``
+or ``1``, and ``Panel_TopRight_Util.selectTab`` already ignores anything
+else, so the bound lives there, not here.
 """
 
 from typing import List
@@ -65,3 +74,36 @@ class SyncCrossSectionPlanePayload(BaseModel):
     origin: List[float] = Field(min_length=3, max_length=3)
     normal: List[float] = Field(min_length=3, max_length=3)
 
+
+class SetPanelTopLeftPanelCollapsedPayload(BaseModel):
+    """Payload of the ``set_panel_top_left_panel_collapsed`` trigger."""
+
+    model_config = ConfigDict(populate_by_name=True)
+
+    collapsed: bool
+
+
+class SetPanelTopRightPanelCollapsedPayload(BaseModel):
+    """Payload of the ``set_panel_top_right_panel_collapsed`` trigger."""
+
+    model_config = ConfigDict(populate_by_name=True)
+
+    collapsed: bool
+
+
+class SetPanelTopRightLegendCollapsedPayload(BaseModel):
+    """Payload of the ``set_panel_top_right_legend_collapsed`` trigger."""
+
+    model_config = ConfigDict(populate_by_name=True)
+
+    collapsed: bool
+
+
+class SetPanelTopRightTabIndexPayload(BaseModel):
+    """Payload of the ``set_panel_top_right_tab_index`` trigger."""
+
+    model_config = ConfigDict(populate_by_name=True)
+
+    tab_index: int = Field(alias="tabIndex")
+
+

src/ansys/visor/viewer/models/runtime/scene/runtime_app_state.py

@@ -30,7 +30,7 @@ class RuntimeAppState(BaseModel):
     @classmethod
     def from_components(
             cls,
-            dark_mode: bool,
+            ui: VisorUIState,
             unit: str | None,
             dataset_states: Dict[int, RuntimeDatasetState],
             orthographic_enabled: bool | None = None,
@@ -41,8 +41,12 @@ def from_components(
             camera: VisorCameraState | None = None,
             variable_states: Dict[str, VisorVariableState] | None = None,
     ) -> "RuntimeAppState":
-        """Construct a RuntimeAppState from the given components."""
-        ui_state = VisorUIState(dark_theme=dark_mode)
+        """Construct a RuntimeAppState from the given components.
+
+        ``ui`` is taken whole and stored as-is: the server owns every one of
+        its fields (theme plus the four panel-layout fields) and assembles
+        them in one place, so this constructor never reaches into it.
+        """
         runtime_scene_state = RuntimeSceneState(
             unit=unit,
             camera=camera,
@@ -55,6 +59,6 @@ def from_components(
             spectrum_states=variable_states or {},
         )
         return cls(
-            ui=ui_state,
+            ui=ui,
             scene=runtime_scene_state,
         )

src/ansys/visor/viewer/models/runtime/visor_scene_details.py

@@ -4,6 +4,7 @@
 
 from pydantic import BaseModel, ConfigDict, Field
 
+from ansys.visor.viewer.models.common.visor_ui_state import VisorUIState
 from ansys.visor.viewer.models.runtime.dataset.runtime_dataset_state import RuntimeDatasetState
 from ansys.visor.viewer.models.runtime.scene.runtime_app_state import RuntimeAppState
 from ansys.visor.viewer.models.runtime.vtk.renderer_annotation import RendererAnnotation
@@ -26,7 +27,7 @@ class VisorSceneDetails(BaseModel):
     @classmethod
     def from_components(
             cls,
-            dark_mode: bool,
+            ui: VisorUIState,
             unit: str | None,
             dataset_states: Dict[int, RuntimeDatasetState],
             scene_graph_state: SceneGraphNodeInfo | None = None,
@@ -36,13 +37,18 @@ def from_components(
             edges_enabled: bool | None = None,
             bounding_box_enabled: bool | None = None,
     ) -> "VisorSceneDetails":
-        """Construct an instance from components."""
+        """Construct an instance from components.
+
+        The UI record is forwarded whole to
+        :meth:`RuntimeAppState.from_components`; this class does not build one
+        and does not read any field of it.
+        """
         vtk_info = RuntimeVTKInfo(
             scene_graph=scene_graph_state,
             renderer_annotation=renderer_annotation,
         )
         app_state = RuntimeAppState.from_components(
-            dark_mode=dark_mode,
+            ui=ui,
             unit=unit,
             dataset_states=dataset_states,
             orthographic_enabled=orthographic_enabled,