Support state relation row removal and verify F2 at widget focus boundary

crates/oa-desktop/src/app.rs

@@ -3,6 +3,8 @@ pub(crate) mod architecture_authoring;
 #[cfg(test)]
 mod architecture_authoring_tests;
 mod checkpoints;
+#[cfg(test)]
+mod diagram_focus_tests;
 pub(crate) mod diagram_removal;
 #[cfg(test)]
 mod diagram_removal_tests;

crates/oa-desktop/src/app/architecture_authoring/tests.rs

@@ -89,17 +89,8 @@ fn architecture_f2_routes_selected_node_to_inline_rename_and_exact_undo() {
         text: None,
         repeat: false,
     });
-    assert!(
-        canvas
-            .update(&mut state, &key, bounds, mouse::Cursor::Unavailable)
-            .is_none()
-    );
-    let _ = canvas.update(
-        &mut state,
-        &CanvasEvent::Mouse(mouse::Event::ButtonPressed(mouse::Button::Left)),
-        bounds,
-        mouse::Cursor::Available(iced::Point::new(150., 120.)),
-    );
+    // Program receives keys already admitted by diagram::focus::Owner. Real
+    // unfocused/Inspector refusal is covered by app::diagram_focus_tests.
     let action = canvas
         .update(&mut state, &key, bounds, mouse::Cursor::Unavailable)
         .unwrap();

crates/oa-desktop/src/app/architecture_authoring_tests.rs

@@ -321,16 +321,11 @@ fn architecture_f2_rename_preserves_identity_placement_and_atomic_history() {
         text: None,
         repeat: false,
     });
-    assert!(canvas.update(&mut state, &key, bounds, cursor).is_none());
-    let _ = canvas.update(
-        &mut state,
-        &iced::widget::canvas::Event::Mouse(mouse::Event::ButtonPressed(mouse::Button::Left)),
-        bounds,
-        cursor,
-    );
+    // Program receives keys already admitted by diagram::focus::Owner. Real
+    // unfocused/Inspector refusal is covered by app::diagram_focus_tests.
     let message = canvas
         .update(&mut state, &key, bounds, cursor)
-        .expect("focused F2 opens the selected semantic name")
+        .expect("admitted F2 opens the selected semantic name")
         .into_inner()
         .0
         .unwrap();

crates/oa-desktop/src/app/diagram_focus_tests.rs

@@ -0,0 +1,156 @@
+//! Keyboard ownership is exercised on the mounted App, not raw Canvas Program.
+use super::*;
+use crate::behavior::canvas_workspace::tests::{Mounted, key};
+use iced::advanced::widget::{Operation, operation};
+use iced::{Point, Rectangle, Size, Vector, keyboard::key::Named, mouse};
+
+struct FocusField(Rectangle);
+impl Operation for FocusField {
+    fn traverse(&mut self, visit: &mut dyn FnMut(&mut dyn Operation)) {
+        visit(self);
+    }
+    fn focusable(
+        &mut self,
+        _: Option<&iced::advanced::widget::Id>,
+        bounds: Rectangle,
+        state: &mut dyn operation::Focusable,
+    ) {
+        if bounds == self.0 {
+            state.focus();
+        } else {
+            state.unfocus();
+        }
+    }
+}
+
+async fn f2(mounted: &mut Mounted, app: &mut App) -> Vec<Message> {
+    mounted
+        .batch(app, &[key(Named::F2)], mouse::Cursor::Unavailable)
+        .await
+}
+
+fn rename_emitted(messages: &[Message]) -> bool {
+    messages.iter().any(|message| {
+        matches!(
+            message,
+            Message::Architecture(architecture_authoring::Event::Rename(..))
+        )
+    })
+}
+
+#[tokio::test]
+async fn mounted_f2_requires_canvas_focus_and_yields_to_clean_inspector() {
+    for layer in [Layer::Oa, Layer::Sa] {
+        for programmatic in [true, false] {
+            let mut project = Project::empty();
+            let object = project
+                .add_element(
+                    if layer == Layer::Oa {
+                        Kind::Entity
+                    } else {
+                        Kind::System
+                    },
+                    layer,
+                    "Original team",
+                    None,
+                )
+                .unwrap();
+            let diagram = project.ensure_diagram(layer);
+            project.diagrams.get_mut(&diagram).unwrap().projection = ProjectionKind::Overview;
+            let node = project.place(diagram, object, Position { x: 80., y: 80. });
+            let mut app = App::with_project(project);
+            app.page = Page::Diagram;
+            app.layer = layer;
+            app.active_diagram = Some(diagram);
+            app.window_size = Size::new(2000., 1400.);
+            let _ = app.update(Message::Select(object));
+            let before = app.document.snapshot();
+            let mut mounted = Mounted::new(&mut app).await;
+            app.zoom = 1.;
+            app.pan = Vector::ZERO;
+            app.fit_to_view = false;
+            mounted.settle(&mut app).await;
+
+            // Selection alone does not grant the canvas keyboard ownership.
+            assert!(!rename_emitted(&f2(&mut mounted, &mut app).await));
+            assert!(app.architecture.is_none());
+            assert_eq!(app.document.bundle(), &before.bundle);
+
+            let bounds = mounted
+                .geometry(&app)
+                .bounds(crate::allocation_input::CANVAS_ID);
+            let projected = projection::project_view(app.project(), diagram)
+                .nodes
+                .into_iter()
+                .find(|item| item.id == node)
+                .unwrap();
+            let point = Point::new(
+                bounds.x + projected.position.x + 40.,
+                bounds.y + projected.position.y + 35.,
+            );
+            mounted.click(&mut app, point).await;
+            assert_eq!((app.selected, app.selected_node), (object, Some(node)));
+            assert!(rename_emitted(&f2(&mut mounted, &mut app).await));
+            let rename = app.architecture.as_ref().expect("canvas F2 opens rename");
+            assert!(rename.inline());
+            assert!(matches!(
+                &rename.saved.intent,
+                architecture_authoring::Intent::Rename { element, name }
+                    if *element == object && name == "Original team"
+            ));
+            assert_eq!(app.document.bundle(), &before.bundle);
+            assert!(
+                !app.document.can_undo(),
+                "opening rename is not a model edit"
+            );
+
+            let task = app.update(Message::Escape);
+            mounted.perform(&mut app, task).await;
+            assert!(app.architecture.is_none());
+            mounted.click(&mut app, point).await;
+            let field = mounted
+                .geometry(&app)
+                .text_inputs
+                .into_iter()
+                .filter(|bounds| bounds.x > app.window_size.width - 320.)
+                .min_by(|a, b| a.y.total_cmp(&b.y))
+                .expect("Inspector name field is mounted");
+            if programmatic {
+                mounted.operate(&app, &mut FocusField(field));
+            } else {
+                let messages = mounted
+                    .batch(
+                        &mut app,
+                        &[key(Named::Tab), key(Named::F2)],
+                        mouse::Cursor::Unavailable,
+                    )
+                    .await;
+                assert!(
+                    !rename_emitted(&messages),
+                    "Tab must retire F2 admission before its queued focus task"
+                );
+            }
+            let geometry = mounted.geometry(&app);
+            assert!(
+                geometry
+                    .focused
+                    .iter()
+                    .any(|(_, bounds, focused)| { *bounds == field && *focused })
+            );
+            assert!(geometry.focused.iter().any(|(id, _, focused)| {
+                id.as_ref() == Some(&iced::advanced::widget::Id::from("diagram-keyboard-owner"))
+                    && !*focused
+            }));
+            assert!(!app.draft_dirty(), "the Inspector is still clean");
+            assert!(!rename_emitted(&f2(&mut mounted, &mut app).await));
+            assert!(app.architecture.is_none());
+            assert_eq!(
+                app.draft.as_ref().unwrap().inputs["/name"].raw,
+                "Original team"
+            );
+            assert_eq!(app.project(), &before.decoded.project);
+            assert_eq!(app.document.bundle(), &before.bundle);
+            assert!(!app.document.can_undo());
+        }
+    }
+}

crates/oa-desktop/src/app/diagram_removal.rs

@@ -73,6 +73,13 @@ impl App {
         } else {
             view.edges.iter().any(|edge| edge.id == intent.object)
                 || view.ports.iter().any(|port| port.element == intent.object)
+                || (self.page == Page::Behavior
+                    && crate::behavior::state_canvas::visible_row_relation(
+                        self.project(),
+                        intent.context.diagram,
+                        &view,
+                        intent.object,
+                    ))
         };
         if !visible {
             return;

crates/oa-desktop/src/app/diagram_removal_tests.rs

@@ -4,6 +4,164 @@ use crate::behavior::canvas_workspace::tests::{Mounted, key};
 use iced::advanced::widget::{Operation, operation};
 use iced::{Event as Input, Point, Rectangle, Size, Vector, keyboard, mouse};
 
+#[tokio::test]
+async fn mounted_state_action_and_internal_rows_delete_relations_and_preserve_reused_work() {
+    use crate::behavior::state_canvas::visible_row_relation;
+    for index in 0..4 {
+        let mut p = Project::empty();
+        let machine = p
+            .add_element(Kind::StateMachine, Layer::Sa, "Machine", None)
+            .unwrap();
+        let region = p
+            .add_element(Kind::Region, Layer::Sa, "Main", Some(machine))
+            .unwrap();
+        let state = p
+            .add_element(Kind::State, Layer::Sa, "Ready", Some(region))
+            .unwrap();
+        let other = p
+            .add_element(Kind::State, Layer::Sa, "Standby", Some(region))
+            .unwrap();
+        let work = p
+            .add_element(Kind::Function, Layer::Sa, "Monitor", None)
+            .unwrap();
+        let mut rows = vec![];
+        for (phase, name) in [
+            (StateActionKind::Entry, "Start monitoring"),
+            (StateActionKind::Do, "Continue monitoring"),
+            (StateActionKind::Exit, "Stop monitoring"),
+        ] {
+            let id = p.relate(RelationKind::StateAction, name, state, work);
+            if let RelationBody::StateAction { phase: value, .. } =
+                &mut p.relations.get_mut(&id).unwrap().body
+            {
+                *value = phase;
+            }
+            rows.push(id);
+        }
+        let retained = p.relate(RelationKind::StateAction, "Other use", other, work);
+        let internal = p.relate(RelationKind::StateTransition, "Refresh", state, state);
+        if let RelationBody::StateTransition {
+            transition_kind, ..
+        } = &mut p.relations.get_mut(&internal).unwrap().body
+        {
+            *transition_kind = TransitionKind::Internal;
+        }
+        rows.push(internal);
+        let target = rows[index];
+        let plan = crate::behavior::state_edit::create_view(&p, machine).unwrap();
+        let diagram = plan.diagram;
+        let p = execute_batch(&p, &[plan.command]).unwrap();
+        let mut app = App::with_project(p);
+        app.layer = Layer::Sa;
+        app.page = Page::Behavior;
+        app.behavior.active_owner = Some(machine);
+        app.behavior.diagram.diagram = Some(diagram);
+        app.window_size = Size::new(2000., 1400.);
+        let _ = app.update(Message::Select(state));
+        let mut mounted = Mounted::new(&mut app).await;
+        app.behavior.diagram.zoom = 1.;
+        app.behavior.diagram.pan = Vector::new(0., 40.);
+        app.behavior.diagram.fit = false;
+        mounted.settle(&mut app).await;
+        let view = projection::project_view(app.project(), diagram);
+        assert!(visible_row_relation(app.project(), diagram, &view, target));
+        assert!(!visible_row_relation(app.project(), diagram, &view, work));
+        let node = view.nodes.iter().find(|n| n.element == state).unwrap();
+        let mut collapsed = app.project().clone();
+        collapsed
+            .diagrams
+            .get_mut(&diagram)
+            .unwrap()
+            .nodes
+            .get_mut(&node.id)
+            .unwrap()
+            .collapsed = true;
+        assert!(!visible_row_relation(
+            &collapsed,
+            diagram,
+            &projection::project_view(&collapsed, diagram),
+            target
+        ));
+        let mut ancestor_collapsed = app.project().clone();
+        let parent = view.nodes.iter().find(|n| n.element == region).unwrap();
+        ancestor_collapsed
+            .diagrams
+            .get_mut(&diagram)
+            .unwrap()
+            .nodes
+            .get_mut(&parent.id)
+            .unwrap()
+            .collapsed = true;
+        assert!(!visible_row_relation(
+            &ancestor_collapsed,
+            diagram,
+            &projection::project_view(&ancestor_collapsed, diagram),
+            target
+        ));
+        let unrelated = app
+            .project()
+            .diagrams
+            .values()
+            .find(|d| d.projection.state_machine().is_none())
+            .map(|d| d.id);
+        if let Some(unrelated) = unrelated {
+            assert!(!visible_row_relation(
+                app.project(),
+                unrelated,
+                &view,
+                target
+            ));
+        }
+        let bounds = mounted
+            .geometry(&app)
+            .focused
+            .into_iter()
+            .find(|(id, _, _)| {
+                id.as_ref() == Some(&iced::advanced::widget::Id::from("diagram-keyboard-owner"))
+            })
+            .unwrap()
+            .1;
+        let row_y = node.position.y + 64. + index as f32 * 28. + 12.;
+        let at = Point::new(
+            bounds.x + node.position.x + 45.,
+            bounds.y + row_y + app.behavior.diagram.pan.y,
+        );
+        mounted.click(&mut app, at).await;
+        assert_eq!(app.selected, target, "actual rendered row identity");
+        assert!(app.behavior.diagram.placement.is_none());
+        let before = app.document.snapshot();
+        delete(&mut mounted, &mut app, false).await;
+        assert_eq!(
+            app.delete_target.as_ref().unwrap().snapshot.request.object,
+            target
+        );
+        assert_eq!(app.document.bundle(), &before.bundle);
+        let task = app.update(Message::CancelDelete);
+        mounted.perform(&mut app, task).await;
+        mounted.click(&mut app, at).await;
+        delete(&mut mounted, &mut app, true).await;
+        let token = app.delete_target.as_ref().unwrap().snapshot.token;
+        let task = app.update(Message::ConfirmDelete(token));
+        mounted.perform(&mut app, task).await;
+        assert!(!app.project().contains(target));
+        assert!(
+            app.project().contains(work)
+                && app.project().contains(state)
+                && app.project().contains(other)
+        );
+        assert!(app.project().contains(retained));
+        for id in rows.iter().filter(|id| **id != target) {
+            assert!(app.project().contains(*id));
+        }
+        consistent(&app);
+        let task = app.update(Message::Undo);
+        mounted.perform(&mut app, task).await;
+        assert_eq!(app.document.bundle(), &before.bundle);
+        assert_eq!(app.project(), &before.decoded.project);
+        assert!(!app.document.can_undo());
+    }
+}
+
 struct Fixture {
     app: App,
     object: Id,

crates/oa-desktop/src/behavior/state_canvas.rs

@@ -402,6 +402,48 @@ fn state_action_rows<'a>(
         .collect()
 }
 
+/// Action and internal-transition rows are selectable relations, not edges or
+/// placements. Match the exact rows rendered in this dedicated machine view.
+pub(crate) fn visible_row_relation(
+    project: &Project,
+    diagram: Id,
+    view: &ProjectedView,
+    id: Id,
+) -> bool {
+    let Some(machine) = project
+        .diagrams
+        .get(&diagram)
+        .and_then(|d| d.projection.state_machine())
+    else {
+        return false;
+    };
+    let Some(relation) = project.relations.get(&id) else {
+        return false;
+    };
+    let source = match relation.body {
+        RelationBody::StateAction { source, .. } => source,
+        RelationBody::StateTransition {
+            source,
+            target,
+            transition_kind: TransitionKind::Internal,
+            ..
+        } if projection::state_machine_contains(project, machine, target) => source,
+        _ => return false,
+    };
+    if !projection::state_machine_contains(project, machine, source) {
+        return false;
+    }
+    view.nodes
+        .iter()
+        .filter(|node| node.element == source)
+        .any(|node| {
+            state_action_rows(project, node)
+                .into_iter()
+                .chain(internal_rows(project, node))
+                .any(|(row, _)| row.id == id)
+        })
+}
+
 fn state_action_label(project: &Project, relation: &Relation) -> String {
     let RelationBody::StateAction { target, phase, .. } = relation.body else {
         return String::new();
@@ -798,7 +840,10 @@ impl canvas::Program<Event> for StateCanvas<'_> {
                     .iter()
                     .find(|node| node.element == self.selected || node.id == self.selected);
                 let object = placement.map_or(self.selected, |node| node.element);
-                if placement.is_none() && !scene.view.edges.iter().any(|edge| edge.id == object) {
+                if placement.is_none()
+                    && !scene.view.edges.iter().any(|edge| edge.id == object)
+                    && !visible_row_relation(self.project, self.diagram, &scene.view, object)
+                {
                     return None;
                 }
                 return Some(

crates/oa-desktop/src/behavior/state_menu.rs

@@ -194,7 +194,13 @@ pub fn popup(app: &App, opened: &Opened, clean: bool) -> Option<Menu<Message>> {
                             || projection::project_view(project, context.diagram)
                                 .edges
                                 .iter()
-                                .any(|edge| edge.id == id))
+                                .any(|edge| edge.id == id)
+                            || super::state_canvas::visible_row_relation(
+                                project,
+                                context.diagram,
+                                &projection::project_view(project, context.diagram),
+                                id,
+                            ))
                 }) {
                     if request.placement.is_some() {
                         "Shift+Delete"