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+// -*- c++ -*-
+#ifndef _GLIBMM_PROPERTYPROXY_H
+#define _GLIBMM_PROPERTYPROXY_H
+/* $Id$ */
+
+/* propertyproxy.h
+ *
+ * Copyright 2002 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <glibmm/propertyproxy_base.h>
+
+
+namespace Glib
+{
+
+/** A PropertyProxy can be used to get and set the value of an object's property.
+ * There are usually also get and set methods on the class itself, which you might find more convenient.
+ * With the PropertyProxy, you may use either get_value() and set_value(), or operator=() and
+ * operator PropertyType(), like so:
+ * @code
+ * int height = cellrenderer.property_height();
+ * cellrenderer.property_editable() = true;
+ * @endcode
+ *
+ * You may also receive notification when a property's value changes, by connecting to signal_changed().
+ */
+template <class T>
+class PropertyProxy : public PropertyProxy_Base
+{
+public:
+  typedef T PropertyType;
+
+  PropertyProxy(ObjectBase* obj, const char* name)
+    : PropertyProxy_Base(obj, name) {}
+
+  /** Set the value of this property.
+   * @param data The new value for the property.
+   */
+  void set_value(const PropertyType& data);
+
+  /** Get the value of this property.
+   * @result The current value of the property.
+   */
+  PropertyType get_value() const;
+
+  /** Set the value of this property back to its default value
+   */
+  void reset_value()
+    { reset_property_(); }
+
+  PropertyProxy<T>& operator=(const PropertyType& data)
+    { this->set_value(data); return *this; }
+
+  operator PropertyType() const
+    { return this->get_value(); }
+};
+
+
+/** See PropertyProxy().
+ * This property can be written, but not read, so there is no get_value() method.
+ */
+template <class T>
+class PropertyProxy_WriteOnly : public PropertyProxy_Base
+{
+public:
+  typedef T PropertyType;
+
+  PropertyProxy_WriteOnly(ObjectBase* obj, const char* name)
+    : PropertyProxy_Base(obj, name) {}
+
+  /** Set the value of this property.
+   * @param data The new value for the property.
+   */
+  void set_value(const PropertyType& data)
+    {
+      PropertyProxy_Base& base = *this;
+      // The downcast to PropertyProxy<T> is safe, and avoids code duplication.
+      static_cast<PropertyProxy<T>&>(base).set_value(data);
+    }
+
+  /** Set the value of this property back to its default value
+   */
+  void reset_value()
+    { reset_property_(); }
+
+  PropertyProxy_WriteOnly<T>& operator=(const PropertyType& data)
+    { this->set_value(data); return *this; }
+};
+
+/** See PropertyProxy().
+ * This property can be read, but not written, so there is no set_value() method.
+ */
+template <class T>
+class PropertyProxy_ReadOnly : public PropertyProxy_Base
+{
+public:
+  typedef T PropertyType;
+
+  //obj is const, because this should be returned by const accessors.
+  PropertyProxy_ReadOnly(const ObjectBase* obj, const char* name)
+    : PropertyProxy_Base(const_cast<ObjectBase*>(obj), name) {}
+
+  /** Get the value of this property.
+   * @result The current value of the property.
+   */
+  PropertyType get_value() const
+    {
+      const PropertyProxy_Base& base = *this;
+      // The downcast to PropertyProxy<T> is safe, and avoids code duplication.
+      return static_cast<const PropertyProxy<T>&>(base).get_value();
+    }
+
+  operator PropertyType() const
+    { return this->get_value(); }
+};
+
+
+/**** Template Implementation **********************************************/
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+
+template <class T>
+void PropertyProxy<T>::set_value(const T& data)
+{
+  Glib::Value<T> value;
+  value.init(Glib::Value<T>::value_type());
+
+  value.set(data);
+  set_property_(value);
+}
+
+template <class T>
+T PropertyProxy<T>::get_value() const
+{
+  Glib::Value<T> value;
+  value.init(Glib::Value<T>::value_type());
+
+  get_property_(value);
+  return value.get();
+}
+
+#endif /* DOXYGEN_SHOULD_SKIP_THIS */
+
+} // namespace Glib
+
+
+#endif /* _GLIBMM_PROPERTYPROXY_H */
+