menu/control: controls are now owned by other controls

controls could now be owned by other controls, that are responsible
for destruction of their slaves

2 files changed, 38 insertions, 13 deletions

diff --git a/src/menu/control.cpp b/src/menu/control.cpp
index 68b5c328..f9ea2a89 100644
--- a/src/menu/control.cpp
+++ b/src/menu/control.cpp
@@ -29,26 +29,43 @@
 
 namespace usdx
 {
-	Control::Control(Control *parent)
-		: parent(parent)
+	Control::Control(Control *owner)
+		: owner(owner)
 	{
+		owner->add(this);
 	}
 
 	Control::~Control()
 	{
-		if (parent) {
-			delete parent;
-			parent = NULL;
+		for (std::list<Control*>::iterator it =
+			     slaves.begin(); it != slaves.end(); it++) {
+			delete *it;
 		}
+
+		slaves.clear();
+	}
+
+	void Control::set_owner(Control *owner)
+	{
+		if (this->owner != owner) {
+			this->owner->remove(this);
+			this->owner = owner;
+			this->owner->add(this);
+		}
+	}
+
+	Control* Control::get_owner(void) const
+	{
+		return owner;
 	}
 
-	void Control::set_parent(Control *parent)
+	void Control::add(Control *new_slave)
 	{
-		this->parent = parent;
+		slaves.push_back(new_slave);
 	}
 
-	Control* Control::get_parent(void) const
+	void Control::remove(Control *slave)
 	{
-		return parent;
+		slaves.remove(slave);
 	}
 };
diff --git a/src/menu/control.hpp b/src/menu/control.hpp
index d0b70d4f..f105b69c 100644
--- a/src/menu/control.hpp
+++ b/src/menu/control.hpp
@@ -27,20 +27,28 @@
 #ifndef CONTROL_HPP
 #define CONTROL_HPP
 
+#include <list>
+
 namespace usdx
 {
 	class Control
 	{
 	private:
-		Control* parent;
+		Control* owner;
+
+	protected:
+		std::list<Control*> slaves;
+
+		void add(Control *new_slave);
+		void remove(Control *slave);
 
 	public:
-		Control(Control *parent);
+		Control(Control *owner);
 		virtual ~Control();
 
-		void set_parent(Control *parent);
+		void set_owner(Control *owner);
 
-		Control* get_parent(void) const;
+		Control* get_owner(void) const;
 	};
 };