Glib::Property: allow to set property nick, blurb and flags.

    * .gitignore: add paramflags generated files to ignore list.
    * glib/glibmm.h: add paramflags header to include list.
    * glib/glibmm/property.{cc|}h: add constructors allowing set nick,
      blurb. Add getters for this values.
      and flags of property.
    * glib/glibmm/value.{cc|h}:
    * glib/src/filelist.am: add paramflags to a build.
    * glib/src/enums.{ccg|hg}: add GParamFlags enum wrapper.
    * glib/glibmm/value_basictypes.{cc|h}.m4: add
      overloaded create_param_spec() for setting additional property
      parameters.

This patch fixes bug #755256

11 files changed, 415 insertions, 21 deletions

diff --git a/.gitignore b/.gitignore
index 6eb41c02..f66dece3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -111,6 +111,8 @@ giommconfig.h
 /glib/glibmm/date.h
 /glib/glibmm/datetime.cc
 /glib/glibmm/datetime.h
+/glib/glibmm/enums.cc
+/glib/glibmm/enums.h
 /glib/glibmm/fileutils.cc
 /glib/glibmm/fileutils.h
 /glib/glibmm/iochannel.cc
diff --git a/glib/glibmm.h b/glib/glibmm.h
index 00334162..80b27b50 100644
--- a/glib/glibmm.h
+++ b/glib/glibmm.h
@@ -106,6 +106,7 @@
 #include <glibmm/date.h>
 #include <glibmm/datetime.h>
 #include <glibmm/dispatcher.h>
+#include <glibmm/enums.h>
 #include <glibmm/error.h>
 #include <glibmm/exception.h>
 #include <glibmm/exceptionhandler.h>
diff --git a/glib/glibmm/property.cc b/glib/glibmm/property.cc
index 70859000..45d90b3f 100644
--- a/glib/glibmm/property.cc
+++ b/glib/glibmm/property.cc
@@ -297,6 +297,20 @@ PropertyBase::get_name() const
   return Glib::ustring(get_name_internal());
 }
 
+Glib::ustring
+PropertyBase::get_nick() const
+{
+  return Glib::convert_const_gchar_ptr_to_ustring(
+    g_param_spec_get_nick(param_spec_));
+}
+
+Glib::ustring
+PropertyBase::get_blurb() const
+{
+  return Glib::convert_const_gchar_ptr_to_ustring(
+    g_param_spec_get_blurb(param_spec_));
+}
+
 void
 PropertyBase::notify()
 {
diff --git a/glib/glibmm/property.h b/glib/glibmm/property.h
index 10769896..454be13d 100644
--- a/glib/glibmm/property.h
+++ b/glib/glibmm/property.h
@@ -61,6 +61,14 @@ public:
    */
   Glib::ustring get_name() const;
 
+  /** Returns the nickname of the property.
+   */
+  Glib::ustring get_nick() const;
+
+  /** Returns the short description of the property.
+   */
+  Glib::ustring get_blurb() const;
+
   /** Notifies the object containing the property that the property has changed.
    * This emits the "notify" signal, passing the property name.
    */
@@ -122,10 +130,11 @@ private:
  *  * The default value and the minimum and maximum bounds (depending on the type of the property).
  *  * Flags, defining, among other things, whether the property can be read or written.
  *
- * This Property class currently supports only the name and default value. The
- * minimum and maximum bounds are set to the full range of the value. The nick
- * and the explanation are set to empty. The flags are set to indicate that the
- * property can be both read from and written to.
+ * This Property class currently supports the name, nick name, description default value and flags.
+ * The minimum and maximum bounds are set to the full range of the value.
+ * Because of internal implementation, flags shouldn't be set to values: Glib::PARAM_STATIC_NAME,
+ * Glib::PARAM_STATIC_NICK, Glib::PARAM_STATIC_BLURB, Glib::PARAM_CONSTRUCT and
+ * Glib::PARAM_CONSTRUCT_ONLY.
  *
  * The class information must be installed into the GObject system once per
  * property, but this is handled automatically.
@@ -184,6 +193,20 @@ public:
    */
   Property(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value);
 
+  /** Constructs a property of the @a object with the specified @a name, @a nick, @a blurb and
+   * @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property(Glib::Object& object, const Glib::ustring& name, const Glib::ustring& nick,
+           const Glib::ustring& blurb, Glib::ParamFlags flags);
+
+  /** Constructs a property of the @a object with the specified @a name, @a default_value, @a nick,
+   * @a blurb and @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags);
+
   /** Sets the value of the property to @a data.
    * The object containing the property will be notified about the change.
    */
@@ -207,27 +230,143 @@ public:
   inline Glib::PropertyProxy<T> get_proxy();
 };
 
+/** See Property.
+ * This property can be read, but not written, so there is no set_value() method.
+ */
+template <class T>
+class Property_ReadOnly : public PropertyBase
+{
+public:
+  typedef T PropertyType;
+  typedef Glib::Value<T> ValueType;
+
+  /**  Constructs a property of the @a object with the specified @a name.
+   * For each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_ReadOnly(Glib::Object& object, const Glib::ustring& name);
+
+  /** Constructs a property of the @a object with the specified @a name and @a default_value.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_ReadOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value);
+
+  /** Constructs a property of the @a object with the specified @a name, @a nick, @a blurb and
+   * @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_ReadOnly(Glib::Object& object, const Glib::ustring& name, const Glib::ustring& nick,
+           const Glib::ustring& blurb, Glib::ParamFlags flags);
+
+  /** Constructs a property of the @a object with the specified @a name, @a default_value, @a nick,
+   * @a blurb and @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_ReadOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags);
+
+  /** Returns the value of the property.
+   */
+  inline PropertyType get_value() const;
+
+  /** Returns the value of the property.
+   */
+  inline operator PropertyType() const;
+
+  /** Returns a proxy object that can be used to manipulate this property.
+   */
+  inline Glib::PropertyProxy_ReadOnly<T> get_proxy();
+};
+
+/** See Property.
+ * This property can be written, but not read, so there is no get_value() method.
+ */
+template <class T>
+class Property_WriteOnly : public PropertyBase
+{
+public:
+  typedef T PropertyType;
+  typedef Glib::Value<T> ValueType;
+
+  /**  Constructs a property of the @a object with the specified @a name.
+   * For each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_WriteOnly(Glib::Object& object, const Glib::ustring& name);
+
+  /** Constructs a property of the @a object with the specified @a name and @a default_value.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_WriteOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value);
+
+  /** Constructs a property of the @a object with the specified @a name, @a nick, @a blurb and
+   * @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_WriteOnly(Glib::Object& object, const Glib::ustring& name, const Glib::ustring& nick,
+           const Glib::ustring& blurb, Glib::ParamFlags flags);
+
+  /** Constructs a property of the @a object with the specified @a name, @a default_value, @a nick,
+   * @a blurb and @a flags.
+   * For  each instance of the object, the same property must be constructed with the same name.
+   */
+  Property_WriteOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags);
+
+  /** Sets the value of the property to @a data.
+   * The object containing the property will be notified about the change.
+   */
+  inline void set_value(const PropertyType& data);
+
+  /** Sets the value of the property to @a data.
+   * The object containing the property will be notified about the change.
+   */
+  inline Property_WriteOnly<T>& operator=(const PropertyType& data);
+
+  /** Returns a proxy object that can be used to manipulate this property.
+   */
+  inline Glib::PropertyProxy_WriteOnly<T> get_proxy();
+};
+
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 
 /**** Glib::Property<T> ****************************************************/
 
 template <class T>
 Property<T>::Property(Glib::Object& object, const Glib::ustring& name)
-: PropertyBase(object, ValueType::value_type())
+: Property(object, name, Glib::ustring(), Glib::ustring(), Glib::PARAM_READWRITE)
 {
-  if (!lookup_property(name))
-    install_property(static_cast<ValueType&>(value_).create_param_spec(name));
 }
 
 template <class T>
 Property<T>::Property(Glib::Object& object, const Glib::ustring& name,
   const typename Property<T>::PropertyType& default_value)
+: Property(object, name, default_value, Glib::ustring(),
+    Glib::ustring(), Glib::PARAM_READWRITE)
+{
+}
+
+template <class T>
+Property<T>::Property(Glib::Object& object, const Glib::ustring& name,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
 : PropertyBase(object, ValueType::value_type())
 {
+  flags |= Glib::PARAM_READWRITE;
+
+  if (!lookup_property(name))
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
+}
+
+template <class T>
+Property<T>::Property(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
+:
+  PropertyBase(object, ValueType::value_type())
+{
+  flags |= Glib::PARAM_READWRITE;
+
   static_cast<ValueType&>(value_).set(default_value);
 
   if (!lookup_property(name))
-    install_property(static_cast<ValueType&>(value_).create_param_spec(name));
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
 }
 
 template <class T>
@@ -267,8 +406,137 @@ Property<T>::get_proxy()
   return Glib::PropertyProxy<T>(object_, get_name_internal());
 }
 
+/**** Glib::Property_ReadOnly<T> ****************************************************/
+
+template <class T>
+Property_ReadOnly<T>::Property_ReadOnly(Glib::Object& object, const Glib::ustring& name)
+: Property_ReadOnly(object, name, Glib::ustring(), Glib::ustring(), Glib::PARAM_READABLE)
+{
+}
+
+template <class T>
+Property_ReadOnly<T>::Property_ReadOnly(Glib::Object& object, const Glib::ustring& name,
+  const typename Property_ReadOnly<T>::PropertyType& default_value)
+: Property_ReadOnly(object, name, default_value, Glib::ustring(), Glib::ustring(),
+    Glib::PARAM_READABLE)
+{
+}
+
+template <class T>
+Property_ReadOnly<T>::Property_ReadOnly(Glib::Object& object, const Glib::ustring& name,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
+: PropertyBase(object, ValueType::value_type())
+{
+  flags |= Glib::PARAM_READABLE;
+  flags &= ~Glib::PARAM_WRITABLE;
+
+  if (!lookup_property(name))
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
+}
+
+template <class T>
+Property_ReadOnly<T>::Property_ReadOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
+: PropertyBase(object, ValueType::value_type())
+{
+  flags |= Glib::PARAM_READABLE;
+  flags &= ~Glib::PARAM_WRITABLE;
+
+  static_cast<ValueType&>(value_).set(default_value);
+
+  if (!lookup_property(name))
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
+}
+
+template <class T>
+inline typename Property_ReadOnly<T>::PropertyType
+Property_ReadOnly<T>::get_value() const
+{
+  return static_cast<const ValueType&>(value_).get();
+}
+
+template <class T>
+inline Property_ReadOnly<T>::operator T() const
+{
+  return static_cast<const ValueType&>(value_).get();
+}
+
+template <class T>
+inline Glib::PropertyProxy_ReadOnly<T>
+Property_ReadOnly<T>::get_proxy()
+{
+  return Glib::PropertyProxy_ReadOnly<T>(object_, get_name_internal());
+}
 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
+/**** Glib::Property_WriteOnly<T> ****************************************************/
+
+template <class T>
+Property_WriteOnly<T>::Property_WriteOnly(Glib::Object& object, const Glib::ustring& name)
+: Property_WriteOnly(object, name, Glib::ustring(),
+    Glib::ustring(), Glib::PARAM_WRITABLE)
+{
+}
+
+template <class T>
+Property_WriteOnly<T>::Property_WriteOnly(Glib::Object& object, const Glib::ustring& name,
+  const typename Property_WriteOnly<T>::PropertyType& default_value)
+: Property_WriteOnly(object, name, default_value, Glib::ustring(),
+    Glib::ustring(), Glib::PARAM_WRITABLE)
+{
+}
+
+template <class T>
+Property_WriteOnly<T>::Property_WriteOnly(Glib::Object& object, const Glib::ustring& name,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
+: PropertyBase(object, ValueType::value_type())
+{
+  flags |= Glib::PARAM_WRITABLE;
+  flags &= ~Glib::PARAM_READABLE;
+
+  if (!lookup_property(name))
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
+
+}
+
+template <class T>
+Property_WriteOnly<T>::Property_WriteOnly(Glib::Object& object, const Glib::ustring& name, const PropertyType& default_value,
+           const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags)
+: PropertyBase(object, ValueType::value_type())
+{
+  flags |= Glib::PARAM_WRITABLE;
+  flags &= ~Glib::PARAM_READABLE;
+
+  static_cast<ValueType&>(value_).set(default_value);
+
+  if (!lookup_property(name))
+    install_property(static_cast<ValueType&>(value_).create_param_spec(name, nick, blurb, flags));
+}
+
+template <class T>
+inline void
+Property_WriteOnly<T>::set_value(const typename Property_WriteOnly<T>::PropertyType& data)
+{
+  static_cast<ValueType&>(value_).set(data);
+  this->notify();
+}
+
+template <class T>
+inline Property_WriteOnly<T>&
+Property_WriteOnly<T>::operator=(const typename Property_WriteOnly<T>::PropertyType& data)
+{
+  static_cast<ValueType&>(value_).set(data);
+  this->notify();
+  return *this;
+}
+
+template <class T>
+inline Glib::PropertyProxy_WriteOnly<T>
+Property_WriteOnly<T>::get_proxy()
+{
+  return Glib::PropertyProxy_WriteOnly<T>(object_, get_name_internal());
+}
+
 } // namespace Glib
 
 #endif /* _GLIBMM_PROPERTY_H */
diff --git a/glib/glibmm/value.cc b/glib/glibmm/value.cc
index 62d59473..ef68fcef 100644
--- a/glib/glibmm/value.cc
+++ b/glib/glibmm/value.cc
@@ -100,8 +100,16 @@ ValueBase_Boxed::get_boxed() const
 GParamSpec*
 ValueBase_Boxed::create_param_spec(const Glib::ustring& name) const
 {
-  return g_param_spec_boxed(name.c_str(), nullptr, nullptr, G_VALUE_TYPE(&gobject_),
-    GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+    static_cast<Glib::ParamFlags>(G_PARAM_READABLE | G_PARAM_WRITABLE));
+}
+
+GParamSpec* ValueBase_Boxed::create_param_spec(const Glib::ustring& name,
+  const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
+  return g_param_spec_boxed(
+      name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb),
+      G_VALUE_TYPE(&gobject_), static_cast<GParamFlags>(flags));
 }
 
 /**** Glib::ValueBase_Object ***********************************************/
@@ -136,6 +144,14 @@ ValueBase_Object::get_object_copy() const
 GParamSpec*
 ValueBase_Object::create_param_spec(const Glib::ustring& name) const
 {
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+      static_cast<Glib::ParamFlags>(G_PARAM_READABLE | G_PARAM_WRITABLE));
+}
+
+GParamSpec*
+ValueBase_Object::create_param_spec(const Glib::ustring& name,
+  const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
   // Glib::Value_Pointer<> derives from Glib::ValueBase_Object, because
   // we don't know beforehand whether a certain type is derived from
   // Glib::Object or not.  To keep create_param_spec() out of the template
@@ -143,15 +159,16 @@ ValueBase_Object::create_param_spec(const Glib::ustring& name) const
 
   if (G_VALUE_HOLDS_OBJECT(&gobject_))
   {
-    return g_param_spec_object(name.c_str(), nullptr, nullptr, G_VALUE_TYPE(&gobject_),
-      GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+    return g_param_spec_object(name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb),
+      G_VALUE_TYPE(&gobject_), static_cast<GParamFlags>(flags));
   }
   else
   {
     g_return_val_if_fail(G_VALUE_HOLDS_POINTER(&gobject_), nullptr);
 
     return g_param_spec_pointer(
-      name.c_str(), nullptr, nullptr, GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+      name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb),
+      static_cast<GParamFlags>(flags));
   }
 }
 
@@ -179,8 +196,17 @@ ValueBase_Enum::get_enum() const
 GParamSpec*
 ValueBase_Enum::create_param_spec(const Glib::ustring& name) const
 {
-  return g_param_spec_enum(name.c_str(), nullptr, nullptr, G_VALUE_TYPE(&gobject_),
-    g_value_get_enum(&gobject_), GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+      static_cast<Glib::ParamFlags>(G_PARAM_READABLE | G_PARAM_WRITABLE));
+}
+
+GParamSpec*
+ValueBase_Enum::create_param_spec(const Glib::ustring& name,
+  const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
+  return g_param_spec_enum(
+      name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb), G_VALUE_TYPE(&gobject_),
+      g_value_get_enum(&gobject_), static_cast<GParamFlags>(flags));
 }
 
 /**** Glib::ValueBase_Flags ************************************************/
@@ -207,8 +233,15 @@ ValueBase_Flags::get_flags() const
 GParamSpec*
 ValueBase_Flags::create_param_spec(const Glib::ustring& name) const
 {
-  return g_param_spec_flags(name.c_str(), nullptr, nullptr, G_VALUE_TYPE(&gobject_),
-    g_value_get_flags(&gobject_), GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+      static_cast<Glib::ParamFlags>(G_PARAM_READABLE | G_PARAM_WRITABLE));
+}
+
+GParamSpec* ValueBase_Flags::create_param_spec(const Glib::ustring& name,
+  const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
+  return g_param_spec_flags(name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb),
+      G_VALUE_TYPE(&gobject_), g_value_get_flags(&gobject_), static_cast<GParamFlags>(flags));
 }
 
 /**** Glib::ValueBase_String ***********************************************/
@@ -238,8 +271,16 @@ ValueBase_String::get_cstring() const
 GParamSpec*
 ValueBase_String::create_param_spec(const Glib::ustring& name) const
 {
-  return g_param_spec_string(name.c_str(), nullptr, nullptr, get_cstring(),
-    GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+      static_cast<Glib::ParamFlags>(G_PARAM_READABLE | G_PARAM_WRITABLE));
+}
+
+GParamSpec*
+ValueBase_String::create_param_spec(const Glib::ustring& name,
+  const Glib::ustring& nick, const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
+  return g_param_spec_string(name.c_str(), c_str_or_nullptr(nick), c_str_or_nullptr(blurb),
+      get_cstring(), static_cast<GParamFlags>(flags));
 }
 
 /**** Glib::Value<std::string> *********************************************/
diff --git a/glib/glibmm/value.h b/glib/glibmm/value.h
index c7f61af0..80c885a0 100644
--- a/glib/glibmm/value.h
+++ b/glib/glibmm/value.h
@@ -21,6 +21,7 @@
 #include <glibmmconfig.h>
 #include <glibmm/refptr.h>
 #include <glibmm/ustring.h>
+#include <glibmm/enums.h>
 #include <glib-object.h>
 
 namespace Glib
@@ -103,6 +104,8 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
 #endif
 
 protected:
@@ -120,6 +123,9 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
+
 #endif
 
 protected:
@@ -139,6 +145,9 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
+
 #endif
 
 protected:
@@ -157,6 +166,9 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
+
 #endif
 
 protected:
@@ -175,6 +187,9 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
+
 #endif
 
 protected:
diff --git a/glib/src/enums.ccg b/glib/src/enums.ccg
new file mode 100644
index 00000000..f3c6be66
--- /dev/null
+++ b/glib/src/enums.ccg
@@ -0,0 +1,16 @@
+/* Copyright (C) 2016 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
diff --git a/glib/src/enums.hg b/glib/src/enums.hg
new file mode 100644
index 00000000..290ee4b8
--- /dev/null
+++ b/glib/src/enums.hg
@@ -0,0 +1,26 @@
+/* Copyright (C) 2016 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+_DEFS(glibmm,glib)
+
+#include <glib.h>
+
+namespace Glib
+{
+_WRAP_ENUM(ParamFlags, GParamFlags, NO_GTYPE)
+} //namespace Glib
+
diff --git a/glib/src/filelist.am b/glib/src/filelist.am
index f76c8bd2..6b52c61a 100644
--- a/glib/src/filelist.am
+++ b/glib/src/filelist.am
@@ -22,6 +22,7 @@ glibmm_files_any_hg =		\
 	convert.hg		\
 	date.hg			\
 	datetime.hg		\
+	enums.hg		\
 	fileutils.hg		\
 	iochannel.hg		\
 	keyfile.hg		\
diff --git a/glib/src/value_basictypes.cc.m4 b/glib/src/value_basictypes.cc.m4
index fd5f775e..ec37c61e 100644
--- a/glib/src/value_basictypes.cc.m4
+++ b/glib/src/value_basictypes.cc.m4
@@ -47,10 +47,18 @@ $1 Value<$1>::get() const
 
 GParamSpec* Value<$1>::create_param_spec(const Glib::ustring& name) const
 {
+  return create_param_spec(name, Glib::ustring(), Glib::ustring(),
+      Glib::PARAM_READWRITE);
+}
+
+GParamSpec* Value<$1>::create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                         const Glib::ustring& blurb, Glib::ParamFlags flags) const
+{
   return g_param_spec_[]ifelse($2,schar,char,$2)(
-      name.c_str(), nullptr, nullptr,ifelse($2,pointer,,[
+      name.c_str(), nick.empty() ? nullptr : nick.c_str(),
+      blurb.empty() ? nullptr : blurb.c_str(), ifelse($2,pointer,,[
       ifelse($3,,,[$3, $4, ])[]g_value_get_$2(&gobject_),])
-      GParamFlags(G_PARAM_READABLE | G_PARAM_WRITABLE));
+      static_cast<GParamFlags>(flags));
 }
 ])
 
diff --git a/glib/src/value_basictypes.h.m4 b/glib/src/value_basictypes.h.m4
index 06320cfa..91a3a4bf 100644
--- a/glib/src/value_basictypes.h.m4
+++ b/glib/src/value_basictypes.h.m4
@@ -43,6 +43,8 @@ public:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
   GParamSpec* create_param_spec(const Glib::ustring& name) const;
+  GParamSpec* create_param_spec(const Glib::ustring& name, const Glib::ustring& nick,
+                                const Glib::ustring& blurb, Glib::ParamFlags flags) const;
 #endif
 };
 ])