#ifndef KEYHANDLER_H
#define KEYHANDLER_H

#include <string>

enum class SpecialKey
{
    NONE,

    UP,
    DOWN,
    LEFT,
    RIGHT,
    HOME,
    END,
    RETURN,
    ESCAPE
};

enum KeyModifiers
{
    KM_NONE = 0,

    KM_LSHIFT = 0x1,
    KM_RSHIFT = 0x2,
    KM_SHIFT = KM_LSHIFT,
    KM_SHIFT_MASK = KM_LSHIFT | KM_RSHIFT,

    KM_LCTRL = 0x4,
    KM_RCTRL = 0x8,
    KM_CTRL = KM_LCTRL,
    KM_CTRL_MASK = KM_LCTRL | KM_RCTRL,

    KM_LALT = 0x10,
    KM_RALT = 0x20,
    KM_ALT = KM_LALT,
    KM_ALT_MASK = KM_LALT | KM_RALT,

    KM_LMETA = 0x40,
    KM_RMETA = 0x80,
    KM_META = KM_LMETA,
    KM_META_MASK = KM_LMETA | KM_RMETA,
};

class KeyHandler
{
public:
    KeyHandler() : m_paused(false) { }
    virtual ~KeyHandler();

    virtual void Key(SpecialKey key, KeyModifiers mods = KeyModifiers::KM_NONE);
    virtual void Key(char key, KeyModifiers mods = KeyModifiers::KM_NONE);

    void TogglePaused();

protected:
    void WaitUntilNotPaused();

private:
    volatile bool m_paused;
};

#endif // KEYHANDLER_H