apps/hosted/keyboard.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 Jonathan Gordon
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22
  23 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
  24 #include <jni.h>
  25 #include <stdbool.h>
  26 #include <stdio.h>
  27 #include <system.h>
  28
  29 extern JNIEnv *env_ptr;
  30 static jclass    RockboxKeyboardInput_class = NULL;
  31 static jobject   RockboxKeyboardInput_instance;
  32 static jmethodID kbd_inputfunc, kbd_result;
  33
  34 static void kdb_init(void)
  35 {
  36     JNIEnv e = *env_ptr;
  37     jmethodID kbd_is_usable;
  38     if (RockboxKeyboardInput_class == NULL)
  39     {
  40         /* get the class and its constructor */
  41         RockboxKeyboardInput_class = e->FindClass(env_ptr, "org/rockbox/RockboxKeyboardInput");
  42         jmethodID constructor = e->GetMethodID(env_ptr, RockboxKeyboardInput_class, "<init>", "()V");
  43         RockboxKeyboardInput_instance = e->NewObject(env_ptr, RockboxKeyboardInput_class, constructor);
  44         kbd_inputfunc = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  45                                     "kbd_input", "(Ljava/lang/String;)V");
  46         kbd_result = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  47                                     "get_result", "()Ljava/lang/String;");
  48     }
  49     /* need to get it every time incase the activity died/restarted */
  50     kbd_is_usable = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  51                                 "is_usable", "()Z");
  52     while (!e->CallBooleanMethod(env_ptr, RockboxKeyboardInput_instance, kbd_is_usable))
  53         sleep(HZ/10);
  54 }
  55
  56 int kbd_input(char* text, int buflen)
  57 {
  58     JNIEnv e = *env_ptr;
  59     jstring str = e->NewStringUTF(env_ptr, text);
  60     jobject ret;
  61     const char* retchars;
  62     kdb_init();
  63
  64     e->CallVoidMethod(env_ptr, RockboxKeyboardInput_instance, kbd_inputfunc, str);
  65
  66     do {
  67         sleep(HZ/10);
  68         ret = e->CallObjectMethod(env_ptr, RockboxKeyboardInput_instance, kbd_result);
  69     } while (!ret);
  70
  71     e->ReleaseStringUTFChars(env_ptr, str, NULL);
  72     retchars = e->GetStringUTFChars(env_ptr, ret, 0);
  73     if (retchars[0])
  74         snprintf(text, buflen, retchars);
  75     e->ReleaseStringUTFChars(env_ptr, ret, retchars);
  76
  77     return retchars[0]?0:1; /* return 0 on success */
  78 }
  79
  80 int load_kbd(unsigned char* filename)
  81 {
  82     (void)filename;
  83     return 1;
  84 }
  85
  86 #endif