add nf7::File::Touch()

file/luajit_obj.cc

@@ -86,11 +86,6 @@ class Obj final : public nf7::File,
   nf7::FileRef src_;
 
 
-  void Touch() noexcept {
-    if (!id()) return;
-    env().Handle({.id = id(), .type = Event::kUpdate});
-  }
-
   void Reset() noexcept;
 };
 

file/node_network.cc

@@ -153,9 +153,6 @@ class Network final : public nf7::File,
         std::make_shared<nf7::GenericContext>(*this, "applying command to redo"),
         [this]() { history_.ReDo(); });
   }
-  void Touch() {
-    env().Handle({ .id = id(), .type = Event::kUpdate, });
-  }
 
   void QueueCommand(const std::shared_ptr<nf7::Context>& ctx,
                     std::unique_ptr<History::Command>&&  cmd) noexcept {

file/system_native_file.cc

@@ -98,9 +98,6 @@ class NativeFile final : public File,
         nf7::NativeFile>(*this, env().npath()/npath_, flags, exlock);
     buf_ = std::make_shared<nf7::AsyncBufferAdaptor>(buf, buf);
   }
-  void Touch() noexcept {
-    env().Handle({.id = id(), .type = Event::kUpdate,});
-  }
 };
 
 void NativeFile::Update() noexcept {

nf7.cc

@@ -142,6 +142,10 @@ File& File::ancestorOrThrow(size_t dist) const {
   if (!f) throw NotFoundException("cannot go up over the root");
   return const_cast<File&>(*f);
 }
+void File::Touch() noexcept {
+  if (!id()) return;
+  env().Handle({.id = id(), .type = Event::kUpdate});
+}
 
 File::TypeInfo::TypeInfo(const std::string& name,
                          std::unordered_set<std::string>&& flags) noexcept :

nf7.hh

@@ -117,6 +117,9 @@ class File {
   File* parent() const noexcept { return parent_; }
   const std::string& name() const noexcept { return name_; }
 
+ protected:
+  void Touch() noexcept;
+
  private:
   const TypeInfo* const type_;
   Env* const env_;