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#ifndef COMMON_KEYMAP
#define COMMON_KEYMAP
#include "backends/common/hardware-key.h"
#include "backends/common/user-action.h"
#include "common/array.h"
#include "common/keyboard.h"
#include "common/func.h"
#include "common/hashmap.h"
namespace Common {
/**
* Hash function for KeyState
*/
template<> struct Hash<KeyState>
: public UnaryFunction<KeyState, uint> {
uint operator()(const KeyState &val) const {
return (uint)(val.keycode * (val.flags << 1));
}
};
class Keymap {
public:
Keymap() { init(); }
Keymap(const Keymap& km);
private:
void init();
public:
/**
* Adds a new UserAction to this Map,
* adding it at the back of the internal array
* @param action the UserAction to add
*/
void addAction(const UserAction& action);
/**
* Maps a HardwareKey to the given UserAction
* @param action must point to a UserAction in this Keymap
* @param key pointer to HardwareKey to map
* @note if action does not point to a UserAction in this Keymap a
* fatal error will occur
*/
void mapKeyToAction(UserAction *action, HardwareKey *key);
/**
* Maps a HardwareKey to the UserAction of the given id
* @param id id of the UserAction to map to
* @param key pointer to HardwareKey to map
*/
void mapKeyToAction(int32 id, HardwareKey *key);
/**
* Retrieves the UserAction with the given id
* @param id id of UserAction to retrieve
* @return Pointer to the UserAction or 0 if not found
*/
const UserAction *getUserAction(int32 id) const;
/**
* Get a read-only array of all the UserActions contained in this Keymap
*/
const Array<UserAction>& getUserActions() const { return _actions; }
/**
* Find the UserAction that a key is mapped to
* @param key the key that is mapped to the required UserAction
* @return a pointer to the UserAction or 0 if no
*/
UserAction *getMappedAction(const KeyState& ks) const;
private:
UserAction *findUserAction(int32 id);
const UserAction *findUserAction(int32 id) const;
void internalMapKey(UserAction *action, HardwareKey *hwKey);
Array<UserAction> _actions;
HashMap<KeyState, UserAction*> _keymap;
};
} // end of namespace Common
#endif
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