Diff: KeyboardManager/kbd_mgr/KeyboardStateHandler.h

Revision:

0:1324e7d9d471

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KeyboardManager/kbd_mgr/KeyboardStateHandler.h	Mon Mar 07 22:51:19 2011 +0000
@@ -0,0 +1,53 @@
+#ifndef KEYBOARD_STATE_HANDLER_H_
+#define KEYBOARD_STATE_HANDLER_H_
+
+#include "kbd_mgr/KeyboardState.h"
+
+namespace kbd_mgr {
+
+/**
+ * @brief Interface used to report a keyboard state.
+ */
+class KeyboardStateHandler {
+public:
+    virtual void handleState(const KeyboardState &newState) = 0;
+    virtual ~KeyboardStateHandler() { }
+};
+
+template <class T>
+class MemberKeyboardStateHandler : public KeyboardStateHandler {
+public:
+    typedef void (T::*MemberFunction)(const KeyboardState &);
+    
+    MemberKeyboardStateHandler(T *obj, MemberFunction fn) :
+        object(obj), func(fn)
+    { }
+    
+    virtual void handleState(const KeyboardState &newState) {
+        (object->*func)(newState);
+    }
+    
+private:
+    T *object;
+    MemberFunction func;
+};
+
+class FunctionKeyboardStateHandler : public KeyboardStateHandler {
+public:
+    typedef void (*HandlerFunction)(const KeyboardState &);
+
+    FunctionKeyboardStateHandler(HandlerFunction fn) :
+        func(fn)
+    { }
+
+    virtual void handleState(const KeyboardState &newState) {
+        func(newState);
+    }
+        
+private:
+    HandlerFunction func;
+};
+
+} // kbd_mgr
+
+#endif // KEYBOARD_STATE_HANDLER_H_