package juloo.keyboard2; import android.view.KeyEvent; import java.util.HashMap; final class KeyValue { public static enum Event { CONFIG, SWITCH_TEXT, SWITCH_NUMERIC, SWITCH_EMOJI, SWITCH_BACK_EMOJI, CHANGE_METHOD, CHANGE_METHOD_PREV, ACTION, SWITCH_FORWARD, SWITCH_BACKWARD, SWITCH_GREEKMATH, CAPS_LOCK, SWITCH_VOICE_TYPING, } // Must be evaluated in the reverse order of their values. public static enum Modifier { SHIFT, CTRL, ALT, META, DOUBLE_AIGU, DOT_ABOVE, DOT_BELOW, GRAVE, AIGU, CIRCONFLEXE, TILDE, CEDILLE, TREMA, HORN, HOOK_ABOVE, SUPERSCRIPT, SUBSCRIPT, RING, CARON, MACRON, ORDINAL, ARROWS, BOX, OGONEK, SLASH, ARROW_RIGHT, BREVE, BAR, FN, // Must be placed last to be applied first } public static enum Editing { COPY, PASTE, CUT, SELECT_ALL, PASTE_PLAIN, UNDO, REDO, // Android context menu actions REPLACE, SHARE, ASSIST, AUTOFILL, } public static enum Placeholder { REMOVED, F11, F12, SHINDOT, SINDOT, OLE, METEG } public static enum Kind { Char, String, Keyevent, Event, Modifier, Editing, Placeholder } // Behavior flags. public static final int FLAG_LATCH = (1 << 20); public static final int FLAG_LOCK = (1 << 21); // Special keys are not repeated and don't clear latched modifiers. public static final int FLAG_SPECIAL = (1 << 22); // Free flag: (1 << 23); // Rendering flags. public static final int FLAG_KEY_FONT = (1 << 24); // special font file public static final int FLAG_SMALLER_FONT = (1 << 25); // 25% smaller symbols public static final int FLAG_SECONDARY = (1 << 26); // dimmer // Used by [Pointers]. public static final int FLAG_LOCKED = (1 << 28); public static final int FLAG_FAKE_PTR = (1 << 29); // Ranges for the different components private static final int FLAGS_BITS = (0b111111111 << 20); // 9 bits wide private static final int KIND_BITS = (0b111 << 29); // 3 bits wide private static final int VALUE_BITS = ~(FLAGS_BITS | KIND_BITS); // 20 bits wide static { check((FLAGS_BITS & KIND_BITS) == 0); // No overlap check((FLAGS_BITS | KIND_BITS | VALUE_BITS) == ~0); // No holes } private final String _symbol; /** This field encodes three things: Kind, flags and value. */ private final int _code; public Kind getKind() { return Kind.values()[(_code & KIND_BITS) >>> 29]; } public int getFlags() { return (_code & FLAGS_BITS); } public boolean hasFlags(int has) { return ((_code & has) == has); } /** The string to render on the keyboard. When [getKind() == Kind.String], also the string to send. */ public String getString() { return _symbol; } /** Defined only when [getKind() == Kind.Char]. */ public char getChar() { return (char)(_code & VALUE_BITS); } /** Defined only when [getKind() == Kind.Keyevent]. */ public int getKeyevent() { return (_code & VALUE_BITS); } /** Defined only when [getKind() == Kind.Event]. */ public Event getEvent() { return Event.values()[(_code & VALUE_BITS)]; } /** Defined only when [getKind() == Kind.Modifier]. */ public Modifier getModifier() { return Modifier.values()[(_code & VALUE_BITS)]; } /** Defined only when [getKind() == Kind.Editing]. */ public Editing getEditing() { return Editing.values()[(_code & VALUE_BITS)]; } public Placeholder getPlaceholder() { return Placeholder.values()[(_code & VALUE_BITS)]; } /* Update the char and the symbol. */ public KeyValue withChar(char c) { return new KeyValue(String.valueOf(c), Kind.Char, c, getFlags()); } public KeyValue withString(String s) { return new KeyValue(s, Kind.String, 0, getFlags()); } public KeyValue withSymbol(String s) { return new KeyValue(s, (_code & KIND_BITS), (_code & VALUE_BITS), getFlags()); } public KeyValue withKeyevent(int code) { return new KeyValue(_symbol, Kind.Keyevent, code, getFlags()); } public KeyValue withFlags(int f) { return new KeyValue(_symbol, (_code & KIND_BITS), (_code & VALUE_BITS), f); } @Override public boolean equals(Object obj) { return sameKey((KeyValue)obj); } /** Type-safe alternative to [equals]. */ public boolean sameKey(KeyValue snd) { if (snd == null) return false; return _symbol.equals(snd._symbol) && _code == snd._code; } @Override public int hashCode() { return _symbol.hashCode() + _code; } public KeyValue(String s, int kind, int value, int flags) { check((kind & ~KIND_BITS) == 0); check((flags & ~FLAGS_BITS) == 0); check((value & ~VALUE_BITS) == 0); _symbol = s; _code = kind | flags | value; } public KeyValue(String s, Kind k, int v, int f) { this(s, (k.ordinal() << 29), v, f); } private static KeyValue charKey(String symbol, char c, int flags) { return new KeyValue(symbol, Kind.Char, c, flags); } private static KeyValue modifierKey(String symbol, Modifier m, int flags) { if (symbol.length() > 1) flags |= FLAG_SMALLER_FONT; return new KeyValue(symbol, Kind.Modifier, m.ordinal(), FLAG_LATCH | FLAG_SPECIAL | FLAG_SECONDARY | flags); } private static KeyValue modifierKey(int symbol, Modifier m, int flags) { return modifierKey(String.valueOf((char)symbol), m, flags | FLAG_KEY_FONT); } private static KeyValue diacritic(int symbol, Modifier m) { return new KeyValue(String.valueOf((char)symbol), Kind.Modifier, m.ordinal(), FLAG_LATCH | FLAG_SPECIAL | FLAG_KEY_FONT); } private static KeyValue eventKey(String symbol, Event e, int flags) { return new KeyValue(symbol, Kind.Event, e.ordinal(), flags | FLAG_SPECIAL | FLAG_SECONDARY); } private static KeyValue eventKey(int symbol, Event e, int flags) { return eventKey(String.valueOf((char)symbol), e, flags | FLAG_KEY_FONT); } private static KeyValue keyeventKey(String symbol, int code, int flags) { return new KeyValue(symbol, Kind.Keyevent, code, flags | FLAG_SECONDARY); } private static KeyValue keyeventKey(int symbol, int code, int flags) { return keyeventKey(String.valueOf((char)symbol), code, flags | FLAG_KEY_FONT); } private static KeyValue editingKey(String symbol, Editing action, int flags) { return new KeyValue(symbol, Kind.Editing, action.ordinal(), flags | FLAG_SPECIAL | FLAG_SECONDARY); } private static KeyValue editingKey(String symbol, Editing action) { return editingKey(symbol, action, FLAG_SMALLER_FONT); } private static KeyValue editingKey(int symbol, Editing action) { return editingKey(String.valueOf((char)symbol), action, FLAG_KEY_FONT); } /** A key that do nothing but has a unique ID. */ private static KeyValue placeholderKey(Placeholder id) { return new KeyValue("", Kind.Placeholder, id.ordinal(), 0); } /** Make a key that types a string. */ public static KeyValue makeStringKey(String str) { if (str.length() == 1) return new KeyValue(str, Kind.Char, str.charAt(0), 0); else return new KeyValue(str, Kind.String, 0, FLAG_SMALLER_FONT); } public static KeyValue getKeyByName(String name) { switch (name) { /* These symbols have special meaning when in `res/xml` and are escaped in standard layouts. The backslash is not stripped when parsed from the custom layout option. */ case "\\?": return makeStringKey("?"); case "\\#": return makeStringKey("#"); case "\\@": return makeStringKey("@"); case "\\\\": return makeStringKey("\\"); case "shift": return modifierKey(0xE00A, Modifier.SHIFT, 0); case "ctrl": return modifierKey("Ctrl", Modifier.CTRL, 0); case "alt": return modifierKey("Alt", Modifier.ALT, 0); case "accent_aigu": return diacritic(0xE050, Modifier.AIGU); case "accent_caron": return diacritic(0xE051, Modifier.CARON); case "accent_cedille": return diacritic(0xE052, Modifier.CEDILLE); case "accent_circonflexe": return diacritic(0xE053, Modifier.CIRCONFLEXE); case "accent_grave": return diacritic(0xE054, Modifier.GRAVE); case "accent_macron": return diacritic(0xE055, Modifier.MACRON); case "accent_ring": return diacritic(0xE056, Modifier.RING); case "accent_tilde": return diacritic(0xE057, Modifier.TILDE); case "accent_trema": return diacritic(0xE058, Modifier.TREMA); case "accent_ogonek": return diacritic(0xE059, Modifier.OGONEK); case "accent_dot_above": return diacritic(0xE05A, Modifier.DOT_ABOVE); case "accent_double_aigu": return diacritic(0xE05B, Modifier.DOUBLE_AIGU); case "accent_slash": return diacritic(0xE05C, Modifier.SLASH); case "accent_arrow_right": return diacritic(0xE05D, Modifier.ARROW_RIGHT); case "accent_breve": return diacritic(0xE05E, Modifier.BREVE); case "accent_bar": return diacritic(0xE05F, Modifier.BAR); case "accent_dot_below": return diacritic(0xE060, Modifier.DOT_BELOW); case "accent_horn": return diacritic(0xE061, Modifier.HORN); case "accent_hook_above": return diacritic(0xE062, Modifier.HOOK_ABOVE); case "superscript": return modifierKey("Sup", Modifier.SUPERSCRIPT, 0); case "subscript": return modifierKey("Sub", Modifier.SUBSCRIPT, 0); case "ordinal": return modifierKey("Ord", Modifier.ORDINAL, 0); case "arrows": return modifierKey("Arr", Modifier.ARROWS, 0); case "box": return modifierKey("Box", Modifier.BOX, 0); case "fn": return modifierKey("Fn", Modifier.FN, 0); case "meta": return modifierKey("Meta", Modifier.META, 0); case "config": return eventKey(0xE004, Event.CONFIG, FLAG_SMALLER_FONT); case "switch_text": return eventKey("ABC", Event.SWITCH_TEXT, FLAG_SMALLER_FONT); case "switch_numeric": return eventKey("123+", Event.SWITCH_NUMERIC, FLAG_SMALLER_FONT); case "switch_emoji": return eventKey(0xE001, Event.SWITCH_EMOJI, FLAG_SMALLER_FONT); case "switch_back_emoji": return eventKey("ABC", Event.SWITCH_BACK_EMOJI, 0); case "switch_forward": return eventKey(0xE013, Event.SWITCH_FORWARD, FLAG_SMALLER_FONT); case "switch_backward": return eventKey(0xE014, Event.SWITCH_BACKWARD, FLAG_SMALLER_FONT); case "switch_greekmath": return eventKey("πλ∇¬", Event.SWITCH_GREEKMATH, FLAG_SMALLER_FONT); case "change_method": return eventKey(0xE009, Event.CHANGE_METHOD, FLAG_SMALLER_FONT); case "change_method_prev": return eventKey(0xE009, Event.CHANGE_METHOD_PREV, FLAG_SMALLER_FONT); case "action": return eventKey("Action", Event.ACTION, FLAG_SMALLER_FONT); // Will always be replaced case "capslock": return eventKey(0xE012, Event.CAPS_LOCK, 0); case "voice_typing": return eventKey(0xE015, Event.SWITCH_VOICE_TYPING, FLAG_SMALLER_FONT); case "esc": return keyeventKey("Esc", KeyEvent.KEYCODE_ESCAPE, FLAG_SMALLER_FONT); case "enter": return keyeventKey(0xE00E, KeyEvent.KEYCODE_ENTER, 0); case "up": return keyeventKey(0xE005, KeyEvent.KEYCODE_DPAD_UP, 0); case "right": return keyeventKey(0xE006, KeyEvent.KEYCODE_DPAD_RIGHT, 0); case "down": return keyeventKey(0xE007, KeyEvent.KEYCODE_DPAD_DOWN, 0); case "left": return keyeventKey(0xE008, KeyEvent.KEYCODE_DPAD_LEFT, 0); case "page_up": return keyeventKey(0xE002, KeyEvent.KEYCODE_PAGE_UP, 0); case "page_down": return keyeventKey(0xE003, KeyEvent.KEYCODE_PAGE_DOWN, 0); case "home": return keyeventKey(0xE00B, KeyEvent.KEYCODE_MOVE_HOME, 0); case "end": return keyeventKey(0xE00C, KeyEvent.KEYCODE_MOVE_END, 0); case "backspace": return keyeventKey(0xE011, KeyEvent.KEYCODE_DEL, 0); case "delete": return keyeventKey(0xE010, KeyEvent.KEYCODE_FORWARD_DEL, 0); case "insert": return keyeventKey("Ins", KeyEvent.KEYCODE_INSERT, FLAG_SMALLER_FONT); case "f1": return keyeventKey("F1", KeyEvent.KEYCODE_F1, 0); case "f2": return keyeventKey("F2", KeyEvent.KEYCODE_F2, 0); case "f3": return keyeventKey("F3", KeyEvent.KEYCODE_F3, 0); case "f4": return keyeventKey("F4", KeyEvent.KEYCODE_F4, 0); case "f5": return keyeventKey("F5", KeyEvent.KEYCODE_F5, 0); case "f6": return keyeventKey("F6", KeyEvent.KEYCODE_F6, 0); case "f7": return keyeventKey("F7", KeyEvent.KEYCODE_F7, 0); case "f8": return keyeventKey("F8", KeyEvent.KEYCODE_F8, 0); case "f9": return keyeventKey("F9", KeyEvent.KEYCODE_F9, 0); case "f10": return keyeventKey("F10", KeyEvent.KEYCODE_F10, 0); case "f11": return keyeventKey("F11", KeyEvent.KEYCODE_F11, FLAG_SMALLER_FONT); case "f12": return keyeventKey("F12", KeyEvent.KEYCODE_F12, FLAG_SMALLER_FONT); case "tab": return keyeventKey(0xE00F, KeyEvent.KEYCODE_TAB, FLAG_SMALLER_FONT); case "\\t": return charKey("\\t", '\t', 0); // Send the tab character case "space": return charKey("\r", ' ', FLAG_KEY_FONT | FLAG_SECONDARY); case "nbsp": return charKey("\u237d", '\u00a0', FLAG_SMALLER_FONT); /* bidi */ case "lrm": return charKey("↱", '\u200e', 0); // Send left-to-right mark case "rlm": return charKey("↰", '\u200f', 0); // Send right-to-left mark case "b(": return charKey("(", ')', 0); case "b)": return charKey(")", '(', 0); case "b[": return charKey("[", ']', 0); case "b]": return charKey("]", '[', 0); case "b{": return charKey("{", '}', 0); case "b}": return charKey("}", '{', 0); case "blt": return charKey("<", '>', 0); case "bgt": return charKey(">", '<', 0); case "removed": return placeholderKey(Placeholder.REMOVED); case "f11_placeholder": return placeholderKey(Placeholder.F11); case "f12_placeholder": return placeholderKey(Placeholder.F12); /* hebrew niqqud */ case "qamats": return charKey("\u05E7\u05B8", '\u05B8', 0); // kamatz case "patah": return charKey("\u05E4\u05B7", '\u05B7', 0); // patach case "sheva": return charKey("\u05E9\u05B0", '\u05B0', 0); case "dagesh": return charKey("\u05D3\u05BC", '\u05BC', 0); // or mapiq case "hiriq": return charKey("\u05D7\u05B4", '\u05B4', 0); case "segol": return charKey("\u05E1\u05B6", '\u05B6', 0); case "tsere": return charKey("\u05E6\u05B5", '\u05B5', 0); case "holam": return charKey("\u05D5\u05B9", '\u05B9', 0); case "qubuts": return charKey("\u05E7\u05BB", '\u05BB', 0); // kubuts case "hataf_patah": return charKey("\u05D7\u05B2\u05E4\u05B7", '\u05B2', 0); // reduced patach case "hataf_qamats": return charKey("\u05D7\u05B3\u05E7\u05B8", '\u05B3', 0); // reduced kamatz case "hataf_segol": return charKey("\u05D7\u05B1\u05E1\u05B6", '\u05B1', 0); // reduced segol case "shindot": return charKey("\u05E9\u05C1", '\u05C1', 0); case "shindot_placeholder": return placeholderKey(Placeholder.SHINDOT); case "sindot": return charKey("\u05E9\u05C2", '\u05C2', 0); case "sindot_placeholder": return placeholderKey(Placeholder.SINDOT); /* hebrew punctuation */ case "geresh": return charKey("\u05F3", '\u05F3', 0); case "gershayim": return charKey("\u05F4", '\u05F4', 0); case "maqaf": return charKey("\u05BE", '\u05BE', 0); /* hebrew biblical */ case "rafe": return charKey("\u05E4\u05BF", '\u05BF', 0); case "ole": return charKey("\u05E2\u05AB", '\u05AB', 0); case "ole_placeholder": return placeholderKey(Placeholder.OLE); case "meteg": return charKey("\u05DE\u05BD", '\u05BD', 0); // or siluq or sof-pasuq case "meteg_placeholder": return placeholderKey(Placeholder.METEG); /* intending/preventing ligature - supported by many scripts*/ case "zwj": return charKey("zwj", '\u200D', 0); // zero-width joiner (provides ligature) case "zwnj": return charKey("zwnj", '\u200C', 0); // zero-width non joiner (prevents unintended ligature) case "copy": return editingKey(0xE030, Editing.COPY); case "paste": return editingKey(0xE032, Editing.PASTE); case "cut": return editingKey(0xE031, Editing.CUT); case "selectAll": return editingKey(0xE033, Editing.SELECT_ALL); case "shareText": return editingKey(0xE034, Editing.SHARE); case "pasteAsPlainText": return editingKey(0xE035, Editing.PASTE_PLAIN); case "undo": return editingKey(0xE036, Editing.UNDO); case "redo": return editingKey(0xE037, Editing.REDO); case "replaceText": return editingKey("repl", Editing.REPLACE); case "textAssist": return editingKey(0xE038, Editing.ASSIST); case "autofill": return editingKey("auto", Editing.AUTOFILL); default: return makeStringKey(name); } } // Substitute for [assert], which has no effect on Android. private static void check(boolean b) { if (!b) throw new RuntimeException("Assertion failure"); } }