Dispatch layer rename through app core

src/app_core/document_layer.h

@@ -88,6 +88,14 @@ public:
     virtual void show_merge_animated_not_supported() = 0;
 };
 
+class DocumentLayerRenameServices {
+public:
+    virtual ~DocumentLayerRenameServices() = default;
+
+    virtual void rename_layer(std::string_view old_name, std::string_view new_name) = 0;
+    virtual void finish_layer_rename() = 0;
+};
+
 class DocumentLayerOperationServices {
 public:
     virtual ~DocumentLayerOperationServices() = default;
@@ -439,6 +447,29 @@ public:
     return pp::foundation::Result<DocumentLayerMenuPlan>::success(std::move(plan));
 }
 
+[[nodiscard]] inline pp::foundation::Status execute_document_layer_rename_plan(
+    const DocumentLayerRenamePlan& plan,
+    DocumentLayerRenameServices& services)
+{
+    switch (plan.action) {
+    case DocumentLayerRenameAction::no_op_same_name:
+        services.finish_layer_rename();
+        return pp::foundation::Status::success();
+    case DocumentLayerRenameAction::rename_and_record_undo:
+        if (plan.new_name.empty()) {
+            return pp::foundation::Status::invalid_argument("layer rename plan must include a new name");
+        }
+        if (plan.old_name == plan.new_name) {
+            return pp::foundation::Status::invalid_argument("layer rename plan must change the name");
+        }
+        services.rename_layer(plan.old_name, plan.new_name);
+        services.finish_layer_rename();
+        return pp::foundation::Status::success();
+    }
+
+    return pp::foundation::Status::invalid_argument("unknown document layer rename action");
+}
+
 inline void execute_document_layer_operation_side_effects(
     const DocumentLayerOperationPlan& plan,
     DocumentLayerOperationServices& services)