1 /*

     2  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /*

    27  *

    28  * (C) Copyright IBM Corp. 2000 - All Rights Reserved

    29  *

    30  * The original version of this source code and documentation is

    31  * copyrighted and owned by IBM. These materials are provided

    32  * under terms of a License Agreement between IBM and Sun.

    33  * This technology is protected by multiple US and International

    34  * patents. This notice and attribution to IBM may not be removed.

    35  *

    36  */

    37 

    38 package com.sun.inputmethods.internal.thaiim;

    39 

    40 import java.awt.im.InputMethodRequests;

    41 import java.awt.im.spi.InputMethodContext;

    42 

    43 import java.awt.Toolkit;

    44 import java.awt.event.KeyEvent;

    45 import java.awt.event.InputMethodEvent;

    46 import java.awt.font.TextAttribute;

    47 import java.awt.font.TextHitInfo;

    48 

    49 import java.text.AttributedCharacterIterator;

    50 import java.text.AttributedString;

    51 

    52 class ThaiInputMethodImpl {

    53 

    54     private static final char[] keyboardMap = {

    55         /* 00 */ '\u0000',

    56         /* 01 */ '\u0001',

    57         /* 02 */ '\u0002',

    58         /* 03 */ '\u0003',

    59         /* 04 */ '\u0004',

    60         /* 05 */ '\u0005',

    61         /* 06 */ '\u0006',

    62         /* 07 */ '\u0007',

    63         /* 08 */ '\u0008',

    64         /* 09 */ '\u0009',

    65         /* 0A */ '\012',

    66         /* 0B */ '\u000B',

    67         /* 0C */ '\u000C',

    68         /* 0D */ '\015',

    69         /* 0E */ '\u000E',

    70         /* 0F */ '\u000F',

    71         /* 10 */ '\u0010',

    72         /* 11 */ '\u0011',

    73         /* 12 */ '\u0012',

    74         /* 13 */ '\u0013',

    75         /* 14 */ '\u0014',

    76         /* 15 */ '\u0015',

    77         /* 16 */ '\u0016',

    78         /* 17 */ '\u0017',

    79         /* 18 */ '\u0018',

    80         /* 19 */ '\u0019',

    81         /* 1A */ '\u001A',

    82         /* 1B */ '\u001B',

    83         /* 1C */ '\u001C',

    84         /* 1D */ '\u001D',

    85         /* 1E */ '\u001E',

    86         /* 1F */ '\u001F',

    87         /* 20 */ '\u0020',

    88         /* 21 */ '\u0e45',   // '!'

    89         /* 22 */ '\u002e',   // '"'

    90         /* 23 */ '\u0e52',   // '#'

    91         /* 24 */ '\u0e53',   // '$'

    92         /* 25 */ '\u0e54',   // '%'

    93         /* 26 */ '\u0e4e',   // '&'

    94         /* 27 */ '\u0e07',   // '''

    95         /* 28 */ '\u0e56',   // '('

    96         /* 29 */ '\u0e57',   // ')'

    97         /* 2A */ '\u0e55',   // '*'

    98         /* 2B */ '\u0e59',   // '+'

    99         /* 2C */ '\u0e21',   // ','

   100         /* 2D */ '\u0e02',   // '-'

   101         /* 2E */ '\u0e43',   // '.'

   102         /* 2F */ '\u0e1d',   // '/'

   103         /* 30 */ '\u0e08',   // '0'

   104         /* 31 */ '\u0e3f',   // '1'

   105         /* 32 */ '\u002f',   // '2'

   106         /* 33 */ '\u002d',   // '3'

   107         /* 34 */ '\u0e20',   // '4'

   108         /* 35 */ '\u0e16',   // '5'

   109         /* 36 */ '\u0e38',   // '6'

   110         /* 37 */ '\u0e36',   // '7'

   111         /* 38 */ '\u0e04',   // '8'

   112         /* 39 */ '\u0e15',   // '9'

   113         /* 3A */ '\u0e0b',   // ':'

   114         /* 3B */ '\u0e27',   // ';'

   115         /* 3C */ '\u0e12',   // '<'

   116         /* 3D */ '\u0e0a',   // '='

   117         /* 3E */ '\u0e2c',   // '>'

   118         /* 3F */ '\u0e26',   // '?'

   119         /* 40 */ '\u0e51',   // '@'

   120         /* 41 */ '\u0e24',   // 'A'

   121         /* 42 */ '\u0e3a',   // 'B'

   122         /* 43 */ '\u0e09',   // 'C'

   123         /* 44 */ '\u0e0f',   // 'D'

   124         /* 45 */ '\u0e0e',   // 'E'

   125         /* 46 */ '\u0e42',   // 'F'

   126         /* 47 */ '\u0e0c',   // 'G'

   127         /* 48 */ '\u0e47',   // 'H'

   128         /* 49 */ '\u0e13',   // 'I'

   129         /* 4A */ '\u0e4b',   // 'J'

   130         /* 4B */ '\u0e29',   // 'K'

   131         /* 4C */ '\u0e28',   // 'L'

   132         /* 4D */ '\u003f',   // 'M'

   133         /* 4E */ '\u0e4c',   // 'N'

   134         /* 4F */ '\u0e2f',   // 'O'

   135         /* 50 */ '\u0e0d',   // 'P'

   136         /* 51 */ '\u0e50',   // 'Q'

   137         /* 52 */ '\u0e11',   // 'R'

   138         /* 53 */ '\u0e06',   // 'S'

   139         /* 54 */ '\u0e18',   // 'T'

   140         /* 55 */ '\u0e4a',   // 'U'

   141         /* 56 */ '\u0e2e',   // 'V'

   142         /* 57 */ '\u0022',   // 'W'

   143         /* 58 */ '\u0029',   // 'X'

   144         /* 59 */ '\u0e4d',   // 'Y'

   145         /* 5A */ '\u0028',   // 'Z'

   146         /* 5B */ '\u0e1a',   // '['

   147         /* 5C */ '\u0e05',   // '\'

   148         /* 5D */ '\u0e25',   // ']'

   149         /* 5E */ '\u0e39',   // '^'

   150         /* 5F */ '\u0e58',   // '_'

   151         /* 60 */ '\u0e4f',   // '`'

   152         /* 61 */ '\u0e1f',   // 'a'

   153         /* 62 */ '\u0e34',   // 'b'

   154         /* 63 */ '\u0e41',   // 'c'

   155         /* 64 */ '\u0e01',   // 'd'

   156         /* 65 */ '\u0e33',   // 'e'

   157         /* 66 */ '\u0e14',   // 'f'

   158         /* 67 */ '\u0e40',   // 'g'

   159         /* 68 */ '\u0e49',   // 'h'

   160         /* 69 */ '\u0e23',   // 'i'

   161         /* 6A */ '\u0e48',   // 'j'

   162         /* 6B */ '\u0e32',   // 'k'

   163         /* 6C */ '\u0e2a',   // 'l'

   164         /* 6D */ '\u0e17',   // 'm'

   165         /* 6E */ '\u0e37',   // 'n'

   166         /* 6F */ '\u0e19',   // 'o'

   167         /* 70 */ '\u0e22',   // 'p'

   168         /* 71 */ '\u0e46',   // 'q'

   169         /* 72 */ '\u0e1e',   // 'r'

   170         /* 73 */ '\u0e2b',   // 's'

   171         /* 74 */ '\u0e30',   // 't'

   172         /* 75 */ '\u0e35',   // 'u'

   173         /* 76 */ '\u0e2d',   // 'v'

   174         /* 77 */ '\u0e44',   // 'w'

   175         /* 78 */ '\u0e1b',   // 'x'

   176         /* 79 */ '\u0e31',   // 'y'

   177         /* 7A */ '\u0e1c',   // 'z'

   178         /* 7B */ '\u0e10',   // '{'

   179         /* 7C */ '\u0e03',   // '|'

   180         /* 7D */ '\u002c',   // '}'

   181         /* 7E */ '\u0e5b',   // '~'

   182         /* 7F */ '\u007F'    //

   183     };

   184 

   185     // cached TextHitInfo. Only one type of TextHitInfo is required.

   186     private static final TextHitInfo ZERO_TRAILING_HIT_INFO = TextHitInfo.trailing(0);

   187 

   188     private ThaiRules rules;

   189 

   190     /**

   191      * Returns the equivalent character for thai locale.

   192      * @param originalChar The original character.

   193      */

   194     private char getMappedChar( char originalChar )

   195     {

   196         if (originalChar <= keyboardMap.length) {

   197             return keyboardMap[originalChar];

   198         }

   199 

   200         return originalChar;

   201     }//getMappedChar()

   202 

   203     private InputMethodContext context;

   204 

   205     void setInputMethodContext(InputMethodContext context) {

   206         this.context = context;

   207         rules = new ThaiRules((InputMethodRequests)context);

   208     }

   209 

   210     void handleKeyTyped(KeyEvent kevent) {

   211         char keyChar = kevent.getKeyChar();

   212         char currentChar = getMappedChar(keyChar);

   213         if (!Character.UnicodeBlock.THAI.equals(Character.UnicodeBlock.of(currentChar))) {

   214             // don't care

   215             return;

   216         } else if (rules.isInputValid(currentChar)) {

   217             Character tmp = new Character(currentChar);

   218             String tmp2 = tmp.toString();

   219             context.dispatchInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED,

   220                                              (new AttributedString(tmp2)).getIterator(),

   221                                              1,

   222                                              ZERO_TRAILING_HIT_INFO,

   223                                              ZERO_TRAILING_HIT_INFO);

   224         } else {

   225             // input sequence is not allowed

   226             Toolkit.getDefaultToolkit().beep();

   227         }

   228 

   229         kevent.consume();// prevent client from getting this event.

   230         return;

   231     }//dispatchEvent()

   232 

   233     void endComposition() {

   234     }//endComposition()

   235 }