Debugger: Split into core library and application.

- Add subfolder src/kits/debugger which contains the debugger's core
  functionality and lower layers. Correspondingly add headers/private/debugger
  for shared headers to be used by clients such as the Debugger application
  and eventual remote_debug_server. Adjust various files to account for
  differences as a result of the split and moves.
- Add libdebugger.so to minimal Jamfile.

headers/private/debugger/value/ValueNodeContainer.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2009, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef VALUE_NODE_CONTAINER_H
+#define VALUE_NODE_CONTAINER_H
+
+
+#include <Locker.h>
+
+#include <ObjectList.h>
+#include <Referenceable.h>
+
+
+class ValueNode;
+class ValueNodeChild;
+
+
+class ValueNodeContainer : public BReferenceable {
+public:
+	class Listener;
+
+public:
+								ValueNodeContainer();
+	virtual						~ValueNodeContainer();
+
+			status_t			Init();
+
+	inline	bool				Lock()		{ return fLock.Lock(); }
+	inline	void				Unlock()	{ fLock.Unlock(); }
+
+			int32				CountChildren() const;
+			ValueNodeChild*		ChildAt(int32 index) const;
+			bool				AddChild(ValueNodeChild* child);
+			void				RemoveChild(ValueNodeChild* child);
+			void				RemoveAllChildren();
+
+			bool				AddListener(Listener* listener);
+			void				RemoveListener(Listener* listener);
+
+			// container must be locked
+
+			void				NotifyValueNodeChanged(
+									ValueNodeChild* nodeChild,
+									ValueNode* oldNode, ValueNode* newNode);
+			void				NotifyValueNodeChildrenCreated(ValueNode* node);
+			void				NotifyValueNodeChildrenDeleted(ValueNode* node);
+			void				NotifyValueNodeValueChanged(ValueNode* node);
+
+private:
+			typedef BObjectList<ValueNodeChild> NodeChildList;
+			typedef BObjectList<Listener> ListenerList;
+
+private:
+			BLocker				fLock;
+			NodeChildList		fChildren;
+			ListenerList		fListeners;
+};
+
+
+class ValueNodeContainer::Listener {
+public:
+	virtual						~Listener();
+
+	// container is locked
+
+	virtual	void				ValueNodeChanged(ValueNodeChild* nodeChild,
+									ValueNode* oldNode, ValueNode* newNode);
+	virtual	void				ValueNodeChildrenCreated(ValueNode* node);
+	virtual	void				ValueNodeChildrenDeleted(ValueNode* node);
+	virtual	void				ValueNodeValueChanged(ValueNode* node);
+};
+
+
+#endif	// VALUE_NODE_CONTAINER_H