Glibmm: Add the common QofInstance methods by using an additional base class.

Not yet complete, but at least compiles fine.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@21294 57a11ea4-9604-0410-9ed3-97b8803252fd

src/optional/gtkmm/Makefile.am

@@ -15,6 +15,7 @@ noinst_HEADERS = \
   gncmm/Account.hpp \
   gncmm/Book.hpp \
   gncmm/Commodity.hpp \
+  gncmm/GncInstance.hpp \
   gncmm/private/Account_p.hpp \
   gncmm/private/Book_p.hpp \
   gncmm/private/Commodity_p.hpp \

src/optional/gtkmm/gncmm/Account.hpp

@@ -34,6 +34,7 @@ extern "C"
 #include <glibmm/ustring.h>
 
 #include "Numeric.hpp"
+#include "GncInstance.hpp"
 
 namespace gnc
 {
@@ -48,7 +49,7 @@ class Commodity;
 /** Wrapper around a gnucash ::Account pointer with C++ methods for
  * easier setter and getter access.
  */
-class Account : public Glib::Object
+class Account : public Glib::Object, public GncInstance
 {
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
     typedef Account CppObjectType;

src/optional/gtkmm/gncmm/GncInstance.hpp

@@ -0,0 +1,90 @@
+/*
+ * GncInstance.hpp
+ * Copyright (C) 2011 Christian Stimming
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, contact:
+ *
+ * Free Software Foundation           Voice:  +1-617-542-5942
+ * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
+ * Boston, MA  02110-1301,  USA       gnu@gnu.org
+ */
+
+#ifndef GNC_GNCINSTANCE_HPP
+#define GNC_GNCINSTANCE_HPP
+
+// gnucash includes
+#include "config.h"
+extern "C"
+{
+#include "qof.h"
+}
+
+#include "Book.hpp"
+
+namespace gnc
+{
+
+/** Wrapper that should be used as an additional base class for those
+ * Glib::Object objects that are also derived from QofInstance. This
+ * base class offers some common methods.
+ *
+ * We cannot name it QofInstance because those stupid C macros (like
+ * QOF_CHECK_TYPE) would always confuse our namespaced declaration
+ * with the C declaration. I hate macros!
+ */
+class GncInstance
+{
+public:
+    GncInstance() {}
+    virtual ~GncInstance() {}
+
+    Glib::RefPtr<Book> getBook() const
+    {
+        return Glib::wrap(qof_instance_get_book (QOF_INSTANCE(get_gobj())));
+    }
+    const ::GncGUID* getGUID() const
+    {
+        return qof_entity_get_guid(QOF_INSTANCE(get_gobj()));
+    }
+
+    bool is_dirty() const
+    {
+        return qof_instance_get_dirty(QOF_INSTANCE(get_gobj()));
+    }
+    void set_dirty()
+    {
+        return qof_instance_set_dirty(QOF_INSTANCE(get_gobj()));
+    }
+    void mark_clean()
+    {
+        return qof_instance_mark_clean(QOF_INSTANCE(get_gobj()));
+    }
+
+    //bool check_type(const char* type_id) { return (0 == g_strcmp0(type_id, QOF_INSTANCE(base_class::get())->e_type)); }
+    //Slots getSlots() const { return qof_instance_get_slots(QOF_INSTANCE(get())); }
+
+private:
+    GObject* get_gobj()
+    {
+        return dynamic_cast<Glib::Object&>(*this).gobj();
+    }
+    const GObject* get_gobj() const
+    {
+        return dynamic_cast<const Glib::Object&>(*this).gobj();
+    }
+};
+
+} // END namespace gnc
+
+#endif