[niepce] importer: slight cleanups

[Hubert Figuière <hub src gnome org>]

commit 87f1c5564121bba1511827531859169090a91821
Author: Hubert Figuière <hub figuiere net>
Date:   Tue May 16 22:01:21 2017 -0400

    importer: slight cleanups

 src/engine/importer/directoryimporter.cpp |    2 +-
 src/engine/importer/importedfile.hpp      |    8 +++++++-
 src/fwk/toolkit/uiresult.hpp              |    8 ++++----
 3 files changed, 12 insertions(+), 6 deletions(-)
---
diff --git a/src/engine/importer/directoryimporter.cpp b/src/engine/importer/directoryimporter.cpp
index 95e85fd..d39e539 100644
--- a/src/engine/importer/directoryimporter.cpp
+++ b/src/engine/importer/directoryimporter.cpp
@@ -36,7 +36,7 @@ public:
     {
       m_name = fwk::path_basename(path);
     }
-  const std::string & name() override
+  const std::string & name() const override
     {
       return m_name;
     }
diff --git a/src/engine/importer/importedfile.hpp b/src/engine/importer/importedfile.hpp
index cdef14f..c9e09cc 100644
--- a/src/engine/importer/importedfile.hpp
+++ b/src/engine/importer/importedfile.hpp
@@ -29,10 +29,16 @@ class ImportedFile {
 public:
   typedef std::shared_ptr<ImportedFile> Ptr;
 
+  ImportedFile()
+    {}
+
+  ImportedFile(const ImportedFile&) = delete;
+  ImportedFile& operator=(const ImportedFile&) = delete;
+
   virtual ~ImportedFile()
     {}
 
-  virtual const std::string & name() = 0;
+  virtual const std::string & name() const = 0;
 private:
 };
 
diff --git a/src/fwk/toolkit/uiresult.hpp b/src/fwk/toolkit/uiresult.hpp
index 4a49297..806eca6 100644
--- a/src/fwk/toolkit/uiresult.hpp
+++ b/src/fwk/toolkit/uiresult.hpp
@@ -60,13 +60,13 @@ public:
       m_data = std::move(d);
     }
     m_notifier.emit();
-  };
+  }
   T recv_data() {
     {
       std::lock_guard<std::mutex> lock(m_data_mutex);
       return m_data;
     }
-  };
+  }
 private:
   T m_data;
 };
@@ -87,7 +87,7 @@ public:
       m_data.push_back(std::move(d));
     }
     m_notifier.emit();
-  };
+  }
   Option<T> recv_data() {
     std::lock_guard<std::mutex> lock(m_data_mutex);
     if (m_data.empty()) {
@@ -96,7 +96,7 @@ public:
     auto result = Option<T>(m_data.front());
     m_data.pop_front();
     return result;
-  };
+  }
 private:
   std::deque<T> m_data;
 };