Added init(const GValue*), so that we can copy GValue instances of any

2006-05-09  Murray Cumming  <murrayc@murrayc.com>

        * glib/glibmm/value.cc:
        * glib/glibmm/value.h: Added init(const GValue*), so that we can copy GValue instances
        of any type at runtime. Needed by libgdamm, which returns const GValue* instances.

3 files changed, 26 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 7c0f068e..b2722d9b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-05-09  Murray Cumming  <murrayc@murrayc.com>
+
+	* glib/glibmm/value.cc:
+	* glib/glibmm/value.h: Added init(const GValue*), so that we can copy GValue instances 
+	of any type at runtime. Needed by libgdamm, which returns const GValue* instances.
+
 This is the HEAD branch, for API additions. See also the glibmm-2-10 branch.
 
 2.10.1:
diff --git a/glib/glibmm/value.cc b/glib/glibmm/value.cc
index adb3e902..12ba6fc9 100644
--- a/glib/glibmm/value.cc
+++ b/glib/glibmm/value.cc
@@ -39,6 +39,14 @@ void ValueBase::init(GType type)
   g_value_init(&gobject_, type);
 }
 
+void ValueBase::init(const GValue* value)
+{
+  g_value_init(&gobject_, G_VALUE_TYPE(value));
+
+  if(value)
+    g_value_copy(value, &gobject_);
+}
+
 ValueBase::ValueBase(const ValueBase& other)
 {
   GLIBMM_INITIALIZE_STRUCT(gobject_, GValue);
diff --git a/glib/glibmm/value.h b/glib/glibmm/value.h
index 94203a32..a891418c 100644
--- a/glib/glibmm/value.h
+++ b/glib/glibmm/value.h
@@ -69,9 +69,21 @@ public:
    *
    * init() is not implemented as constructor, to avoid the necessity
    * to implement a forward constructor in each derived class.
+   *
+   * @param type The type that the Value should hold.
    */
   void init(GType type);
 
+  /** Setup the GValue storing the type and value of the specified @a value.
+   * Note that init() should never be called twice.
+   *
+   * init() is not implemented as constructor, to avoid the necessity
+   * to implement a forward constructor in each derived class.
+   *
+   * @param value The existing GValue.
+   */
+  void init(const GValue* value);
+
   /** Reset contents to the default value of its type.
    */
   void reset();