Complete source 6 engineering workflows and preserve release validation evidence

crates/oa-desktop/src/document.rs

@@ -97,6 +97,7 @@ pub struct Document {
     current_bytes: usize,
     saved: Arc<SourceBundle>,
     revision: u64,
+    view_index: std::cell::OnceCell<oa_core::view_options::ViewIndex>,
     limits: ProjectLimits,
     recovered_unsaved: bool,
 }
@@ -126,6 +127,7 @@ impl Document {
             future: Vec::new(),
             saved: Arc::new(bundle),
             revision: 0,
+            view_index: Default::default(),
             limits,
             recovered_unsaved: false,
         })
@@ -135,6 +137,12 @@ impl Document {
         &self.current.decoded.project
     }
 
+    /// Semantic reachability is shared by every diagram at this accepted revision.
+    pub fn view_index(&self) -> &oa_core::view_options::ViewIndex {
+        self.view_index
+            .get_or_init(|| oa_core::view_options::ViewIndex::new(self.project()))
+    }
+
     pub fn bundle(&self) -> &SourceBundle {
         &self.current.bundle
     }
@@ -220,6 +228,7 @@ impl Document {
             // Source-position readers must reject their old revision even though
             // changing the save location does not create an Undo transaction.
             self.revision = self.revision.saturating_add(1);
+            self.view_index.take();
         }
         Ok(())
     }
@@ -349,6 +358,7 @@ impl Document {
             bytes: std::mem::replace(&mut self.current_bytes, previous.bytes),
         });
         self.revision = self.revision.saturating_add(1);
+        self.view_index.take();
         true
     }
 
@@ -361,6 +371,7 @@ impl Document {
             bytes: std::mem::replace(&mut self.current_bytes, next.bytes),
         });
         self.revision = self.revision.saturating_add(1);
+        self.view_index.take();
         true
     }
 
@@ -382,6 +393,7 @@ impl Document {
             retained = retained.saturating_sub(self.past.remove(0).bytes);
         }
         self.revision = self.revision.saturating_add(1);
+        self.view_index.take();
         true
     }
 }
@@ -399,6 +411,37 @@ mod tests {
         Document::from_project(Project::empty(), ProjectLimits::default()).unwrap()
     }
 
+    #[test]
+    fn cached_view_index_tracks_accepted_creation_undo_and_redo() {
+        use oa_core::{Relation, RelationBody, RelationKind, view_options::ViewOptions};
+        let mut p = Project::empty();
+        let source = p
+            .add_element(Kind::Entity, Layer::Oa, "Team", None)
+            .unwrap();
+        let target = p
+            .add_element(Kind::Actor, Layer::Oa, "Dispatcher", None)
+            .unwrap();
+        let mut document = Document::from_project(p, ProjectLimits::default()).unwrap();
+        let id = Id::new_v4();
+        let options = ViewOptions::default();
+        let visible = |d: &Document| d.view_index().prepare(Layer::Oa, &options).includes(id);
+        assert!(!visible(&document));
+        document
+            .execute(Command::CreateRelation(Relation {
+                id,
+                alias: "radio".into(),
+                name: "Radio".into(),
+                description: String::new(),
+                body: RelationBody::new(RelationKind::CommunicationMean, source, target),
+            }))
+            .unwrap();
+        assert!(visible(&document));
+        assert!(document.undo());
+        assert!(!visible(&document));
+        assert!(document.redo());
+        assert!(visible(&document));
+    }
+
     fn comment(bundle: &SourceBundle, text: &str) -> SourceBundle {
         let mut changed = bundle.clone();
         changed