M3: component properties keep their order on rename; Make slot asks for the name (#1536, #1537) (#1565)

Properties were listed by name, so a rename moved one. Components now keep prop_order (the names as they were made; a rename keeps the place) and every listing follows it. Make slot opens a name field under the frame's Slot row; Enter makes the slot, Escape cancels, a taken name keeps the field open.

crates/engine/src/assets/components.rs

@@ -284,6 +284,16 @@ pub fn default_props(comp: &Node) -> BTreeMap<String, Value> {
     out
 }
 
+/// Component `c`'s property definitions, in the order they show ([`figcraft_doc::ordered_props`]).
+pub fn prop_list(doc: &Document, c: NodeId) -> Vec<(String, PropDef)> {
+    match doc.node(c).map(|n| &n.kind) {
+        Some(NodeKind::Component { props, prop_order, .. }) => {
+            figcraft_doc::ordered_props(props, prop_order).into_iter().map(|(k, d)| (k.clone(), d.clone())).collect()
+        }
+        _ => Vec::new(),
+    }
+}
+
 /// Whether instances store a value for the property (every kind but slots).
 pub fn takes_value(d: &PropDef) -> bool {
     !matches!(d, PropDef::Slot { .. })

crates/engine/src/assets/components/rebase_source_tests.rs

@@ -7,7 +7,7 @@ fn add(doc: &mut Document, parent: NodeId, kind: NodeKind, name: &str) -> NodeId
 }
 
 fn component(doc: &mut Document, parent: NodeId, name: &str) -> NodeId {
-    add(doc, parent, NodeKind::Component { description: String::new(), props: BTreeMap::new() }, name)
+    add(doc, parent, NodeKind::Component { description: String::new(), props: BTreeMap::new(), prop_order: Vec::new() }, name)
 }
 
 fn mirror(doc: &mut Document, source: NodeId, parent: NodeId) -> NodeId {