package juloo.keyboard2;

import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import java.util.HashMap;

class KeyValue
{
	public static final int		EVENT_NONE = -1;
	public static final int		EVENT_CONFIG = -2;
	public static final int		EVENT_SWITCH_TEXT = -3;
	public static final int		EVENT_SWITCH_NUMERIC = -4;
	public static final int		EVENT_SWITCH_EMOJI = -5;
	public static final int		EVENT_SWITCH_BACK_EMOJI = -6;
	public static final int		EVENT_CHANGE_METHOD = -7;
	public static final char	CHAR_NONE = '\0';

	public static final int		FLAG_KEEP_ON = 1;
	public static final int		FLAG_LOCK = (1 << 1);
	public static final int		FLAG_CTRL = (1 << 2);
	public static final int		FLAG_SHIFT = (1 << 3);
	public static final int		FLAG_ALT = (1 << 4);
	public static final int		FLAG_NOREPEAT = (1 << 5);
	public static final int		FLAG_NOCHAR = (1 << 6);
	public static final int		FLAG_LOCKED = (1 << 8);

	public static final int		FLAG_KEY_FONT = (1 << 12);

	public static final int		FLAG_ACCENT1 = (1 << 16);
	public static final int		FLAG_ACCENT2 = (1 << 17);
	public static final int		FLAG_ACCENT3 = (1 << 18);
	public static final int		FLAG_ACCENT4 = (1 << 19);
	public static final int		FLAG_ACCENT5 = (1 << 20);
	public static final int		FLAG_ACCENT6 = (1 << 21);

  public static final int   FLAGS_ACCENTS = FLAG_ACCENT1 | FLAG_ACCENT2 |
    FLAG_ACCENT3 | FLAG_ACCENT4 | FLAG_ACCENT5 | FLAG_ACCENT6;

  private final String _name;
  private final String _symbol;
  private final char _char;
  private final int _eventCode;
  private final int _flags;

	private int			_cacheFlags;
	private String		_cacheSymbol;

	public String		getName()
	{
		return (_name);
	}

	public String		getSymbol(int flags)
	{
		if (_symbol == null)
		{
			if (flags != _cacheFlags)
			{
				_cacheSymbol = String.valueOf(getChar(flags));
				_cacheFlags = flags;
			}
			return (_cacheSymbol);
		}
		return (_symbol);
	}

	public char			getChar(int flags)
	{
		if (flags != 0)
		{
			char c = _char;
			if ((flags & FLAG_SHIFT) != 0)
				c = Character.toUpperCase(_char);
			if ((flags & FLAG_ACCENT1) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u02CB', (int)c);
			if ((flags & FLAG_ACCENT2) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u00B4', (int)c);
			if ((flags & FLAG_ACCENT3) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u02C6', (int)c);
			if ((flags & FLAG_ACCENT4) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u02DC', (int)c);
			if ((flags & FLAG_ACCENT5) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u00B8', (int)c);
			if ((flags & FLAG_ACCENT6) != 0)
				c = (char)KeyCharacterMap.getDeadChar('\u00A8', (int)c);
			if (c != 0)
				return (c);
		}
		return (_char);
	}

	public int			getEventCode()
	{
		return (_eventCode);
	}

	public int			getFlags()
	{
		return (_flags);
	}

	private static HashMap<String, KeyValue> keys = new HashMap<String, KeyValue>();

	protected KeyValue(String name, String symbol, char c, int eventCode, int flags)
	{
		_name = name;
		_symbol = symbol;
		_char = c;
		_eventCode = eventCode;
		_flags = flags;
		_cacheFlags = -1;
	}

	public static KeyValue	getKeyByName(String name)
	{
		return (KeyValue.keys.get(name));
	}

  private static void addKey(String name, String symbol, char c, int event, int flags)
  {
    keys.put(name, new KeyValue(name, symbol, c, event, flags));
  }

  private static void addCharKey(char c, int event)
  {
    String name = String.valueOf(c);
    addKey(name, name, c, event, 0);
  }

  private static void addModifierKey(String name, String symbol, int extra_flags)
  {
    addKey(name, symbol, CHAR_NONE, EVENT_NONE,
        FLAG_KEEP_ON | FLAG_NOCHAR | FLAG_NOREPEAT | extra_flags);
  }

  private static void addSpecialKey(String name, String symbol, int event)
  {
    addKey(name, symbol, CHAR_NONE, event, FLAG_NOREPEAT);
  }

  static
  {
    String chars = "<>&\"'(-_)=°+"
      + "~#{[|`\\^@]}"
      + "^$*,;:!£%µ?./§";
    for (int i = 0; i < chars.length(); i++)
      addCharKey(chars.charAt(i), EVENT_NONE);

    addModifierKey("shift", "⇧", FLAG_LOCK | FLAG_SHIFT);
    addModifierKey("ctrl", "Ctrl", FLAG_CTRL);
    addModifierKey("alt", "Alt", FLAG_ALT);
    addModifierKey("accent1", "\u02CB", FLAG_ACCENT1);
    addModifierKey("accent2", "\u00B4", FLAG_ACCENT2);
    addModifierKey("accent3", "\u02C6", FLAG_ACCENT3);
    addModifierKey("accent4", "\u02DC", FLAG_ACCENT4);
    addModifierKey("accent5", "\u00B8", FLAG_ACCENT5);
    addModifierKey("accent6", "\u00A8", FLAG_ACCENT6);

    addCharKey('a', KeyEvent.KEYCODE_A);
    addCharKey('b', KeyEvent.KEYCODE_B);
    addCharKey('c', KeyEvent.KEYCODE_C);
    addCharKey('d', KeyEvent.KEYCODE_D);
    addCharKey('e', KeyEvent.KEYCODE_E);
    addCharKey('f', KeyEvent.KEYCODE_F);
    addCharKey('g', KeyEvent.KEYCODE_G);
    addCharKey('h', KeyEvent.KEYCODE_H);
    addCharKey('i', KeyEvent.KEYCODE_I);
    addCharKey('j', KeyEvent.KEYCODE_J);
    addCharKey('k', KeyEvent.KEYCODE_K);
    addCharKey('l', KeyEvent.KEYCODE_L);
    addCharKey('m', KeyEvent.KEYCODE_M);
    addCharKey('n', KeyEvent.KEYCODE_N);
    addCharKey('o', KeyEvent.KEYCODE_O);
    addCharKey('p', KeyEvent.KEYCODE_P);
    addCharKey('q', KeyEvent.KEYCODE_Q);
    addCharKey('r', KeyEvent.KEYCODE_R);
    addCharKey('s', KeyEvent.KEYCODE_S);
    addCharKey('t', KeyEvent.KEYCODE_T);
    addCharKey('u', KeyEvent.KEYCODE_U);
    addCharKey('v', KeyEvent.KEYCODE_V);
    addCharKey('w', KeyEvent.KEYCODE_W);
    addCharKey('x', KeyEvent.KEYCODE_X);
    addCharKey('y', KeyEvent.KEYCODE_Y);
    addCharKey('z', KeyEvent.KEYCODE_Z);
    addCharKey('0', KeyEvent.KEYCODE_0);
    addCharKey('1', KeyEvent.KEYCODE_1);
    addCharKey('2', KeyEvent.KEYCODE_2);
    addCharKey('3', KeyEvent.KEYCODE_3);
    addCharKey('4', KeyEvent.KEYCODE_4);
    addCharKey('5', KeyEvent.KEYCODE_5);
    addCharKey('6', KeyEvent.KEYCODE_6);
    addCharKey('7', KeyEvent.KEYCODE_7);
    addCharKey('8', KeyEvent.KEYCODE_8);
    addCharKey('9', KeyEvent.KEYCODE_9);

    addSpecialKey("config", "Conf", EVENT_CONFIG);
    addSpecialKey("switch_text", "ABC", EVENT_SWITCH_TEXT);
    addSpecialKey("switch_numeric", "123+", EVENT_SWITCH_NUMERIC);
    addSpecialKey("switch_emoji", ":)", EVENT_SWITCH_EMOJI);
    addSpecialKey("switch_back_emoji", "ABC", EVENT_SWITCH_BACK_EMOJI);
    addSpecialKey("change_method", "⊞", EVENT_CHANGE_METHOD);

    addKey("esc",		"Esc",		CHAR_NONE,	KeyEvent.KEYCODE_ESCAPE,		0);
    addKey("enter",	"\uE800",	CHAR_NONE,	KeyEvent.KEYCODE_ENTER,			FLAG_KEY_FONT);
    addKey("up",		"\uE80B",	CHAR_NONE,	KeyEvent.KEYCODE_DPAD_UP,		FLAG_KEY_FONT);
    addKey("right",	"\uE80C",	CHAR_NONE,	KeyEvent.KEYCODE_DPAD_RIGHT,	FLAG_KEY_FONT);
    addKey("down",	"\uE809",	CHAR_NONE,	KeyEvent.KEYCODE_DPAD_DOWN,		FLAG_KEY_FONT);
    addKey("left",	"\uE80A",	CHAR_NONE,	KeyEvent.KEYCODE_DPAD_LEFT,		FLAG_KEY_FONT);
    addKey("page_up",	"⇞",		CHAR_NONE,	KeyEvent.KEYCODE_PAGE_DOWN,		0);
    addKey("page_down", "⇟",		CHAR_NONE,	KeyEvent.KEYCODE_PAGE_UP,		0);
    addKey("home",	"↖",		CHAR_NONE,	KeyEvent.KEYCODE_HOME,			0);
    addKey("end",		"↗",		CHAR_NONE,	KeyEvent.KEYCODE_MOVE_END,		0);
    addKey("backspace", "⌫",		CHAR_NONE,	KeyEvent.KEYCODE_DEL,			0);
    addKey("delete",	"⌦",		CHAR_NONE,	KeyEvent.KEYCODE_FORWARD_DEL,	0);
    addKey("insert",	"Ins",		CHAR_NONE,	KeyEvent.KEYCODE_INSERT,		0);

    addKey("tab",		"↹",		'\t',		KeyEvent.KEYCODE_TAB,			0);
    addKey("space",	null,		' ',		KeyEvent.KEYCODE_SPACE,			0);
  }
}