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package juloo.keyboard2;
import android.util.SparseArray;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import java.util.HashMap;
class KeyModifier
{
/* Cache key is KeyValue's name */
private static HashMap<String, SparseArray<KeyValue>> _cache =
new HashMap<String, SparseArray<KeyValue>>();
/* Modify a key according to modifiers. */
public static KeyValue handleFlags(KeyValue k, int flags)
{
if (flags == 0) // No modifier
return k;
SparseArray<KeyValue> ks = cacheEntry(k);
KeyValue r = ks.get(flags);
if (r != null) // Found in cache
return r;
r = k;
r = handleFn(r, flags);
r = handleShift(r, flags);
r = handleAccents(r, flags);
ks.put(flags, r);
return r;
}
private static KeyValue handleAccents(KeyValue k, int flags)
{
if (k.char_ == KeyValue.CHAR_NONE || (flags & KeyValue.FLAGS_ACCENTS) == 0)
return k;
char c = handleAccentChar(k.char_, flags);
if (c == 0 || c == k.char_)
return k;
return k.withCharAndSymbol(c);
}
private static KeyValue handleShift(KeyValue k, int flags)
{
if ((flags & KeyValue.FLAG_SHIFT) == 0)
return k;
char c = k.char_;
if (k.char_ != KeyValue.CHAR_NONE)
c = Character.toUpperCase(c);
if (c == k.char_) // More rules if toUpperCase() did nothing
switch (k.symbol)
{
case "→": c = '⇒'; break;
case "←": c = '⇐'; break;
case "<": c = '«'; break;
case ">": c = '»'; break;
case "“": c = '”'; break;
default: return k;
}
return k.withCharAndSymbol(c);
}
private static char handleAccentChar(char c, int flags)
{
switch ((flags & KeyValue.FLAGS_ACCENTS))
{
case KeyValue.FLAG_ACCENT1:
return (char)KeyCharacterMap.getDeadChar('\u02CB', c);
case KeyValue.FLAG_ACCENT2:
switch (c)
{
case '`': return '´';
case '<': return '‘';
case '>': return '‘';
default: return (char)KeyCharacterMap.getDeadChar('\u00B4', c);
}
case KeyValue.FLAG_ACCENT3:
switch (c)
{
case '*': return '°';
default: return (char)KeyCharacterMap.getDeadChar('\u02C6', c);
}
case KeyValue.FLAG_ACCENT4:
switch (c)
{
case '?': return '¿';
case '!': return '¡';
default: return (char)KeyCharacterMap.getDeadChar('\u02DC', c);
}
case KeyValue.FLAG_ACCENT5:
switch (c)
{
case 'u': return 'µ';
case '"': return '„';
case '\'': return '’';
case '-': return '¬';
case 'a': return 'æ';
case 'o': return 'œ';
default: return (char)KeyCharacterMap.getDeadChar('\u00B8', c);
}
case KeyValue.FLAG_ACCENT6:
switch (c)
{
case '-': return '÷';
default: return (char)KeyCharacterMap.getDeadChar('\u00A8', c);
}
case KeyValue.FLAG_ACCENT_SUPERSCRIPT:
switch (c)
{
case '1': return '¹';
case '2': return '²';
case '3': return '³';
case '4': return '⁴';
case '5': return '⁵';
case '6': return '⁶';
case '7': return '⁷';
case '8': return '⁸';
case '9': return '⁹';
case '0': return '⁰';
case 'i': return 'ⁱ';
case '+': return '⁺';
case '-': return '⁻';
case '=': return '⁼';
case '(': return '⁽';
case ')': return '⁾';
case 'n': return 'ⁿ';
default: return c;
}
case KeyValue.FLAG_ACCENT_SUBSCRIPT:
switch (c)
{
case '1': return '₁';
case '2': return '₂';
case '3': return '₃';
case '4': return '₄';
case '5': return '₅';
case '6': return '₆';
case '7': return '₇';
case '8': return '₈';
case '9': return '₉';
case '0': return '₀';
case '+': return '₊';
case '-': return '₋';
case '=': return '₌';
case '(': return '₍';
case ')': return '₎';
case 'e': return 'ₑ';
case 'a': return 'ₐ';
case 'x': return 'ₓ';
case 'o': return 'ₒ';
default: return c;
}
default: return c; // Can't happen
}
}
private static KeyValue handleFn(KeyValue k, int flags)
{
if ((flags & KeyValue.FLAG_FN) == 0)
return k;
String name;
switch (k.name)
{
case "1": name = "f1"; break;
case "2": name = "f2"; break;
case "3": name = "f3"; break;
case "4": name = "f4"; break;
case "5": name = "f5"; break;
case "6": name = "f6"; break;
case "7": name = "f7"; break;
case "8": name = "f8"; break;
case "9": name = "f9"; break;
case "0": name = "f10"; break;
case "up": name = "page_up"; break;
case "down": name = "page_down"; break;
case "left": name = "home"; break;
case "right": name = "end"; break;
case ">": name = "→"; break;
case "<": name = "←"; break;
case "\"": name = "“"; break;
case "-": name = "–"; break;
case "_": name = "—"; break;
case "esc": name = "insert"; break;
default: return k;
}
return KeyValue.getKeyByName(name);
}
/* Lookup the cache entry for a key. Create it needed. */
private static SparseArray<KeyValue> cacheEntry(KeyValue k)
{
SparseArray<KeyValue> ks = _cache.get(k.name);
if (ks == null)
{
ks = new SparseArray<KeyValue>();
_cache.put(k.name, ks);
}
return ks;
}
}
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