1 files changed, 48 insertions, 0 deletions
diff --git a/arts/modules/common/env_item_impl.cc b/arts/modules/common/env_item_impl.cc
new file mode 100644
index 00000000..6bc960d8
--- /dev/null
+++ b/arts/modules/common/env_item_impl.cc
@@ -0,0 +1,48 @@
+#include "artsmodulescommon.h"
+#include "debug.h"
+#include "env_item_impl.h"
+
+using namespace Arts;
+using namespace std;
+
+Environment::Item_impl::Item_impl()
+	: _active(false)
+{
+}
+
+Environment::Item_impl::~Item_impl()
+{
+	// Items can't be deleted while they are still inside a Container
+	arts_assert(_active == false);
+}
+
+Environment::Container Environment::Item_impl::parent()
+{
+	Container p = _parent;
+	return p;
+}
+
+void Environment::Item_impl::setContainer(Environment::Container container)
+{
+	if(container.isNull()) // remove from container
+	{
+		arts_return_if_fail(_active == true);
+
+		_parent = container;
+		_active = false;
+	}
+	else // add to container
+	{
+		Container p = _parent;
+		arts_return_if_fail(p.isNull() && _active == false);
+
+		_parent = container;
+		_active = true;
+	}
+	active_changed(_active);
+}
+
+bool Environment::Item_impl::active()
+{
+	return _active;
+}