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 "string-extra.h"
  27 #include "kernel.h"
  28
  29 extern JNIEnv          *env_ptr;
  30 static jclass           RockboxKeyboardInput_class;
  31 static jobject          RockboxKeyboardInput_instance;
  32 static jmethodID        kbd_inputfunc;
  33 static struct wakeup    kbd_wakeup;
  34 static bool             accepted;
  35 static jstring          new_string;
  36
  37 JNIEXPORT void JNICALL
  38 Java_org_rockbox_RockboxKeyboardInput_put_1result(JNIEnv *env, jobject this,
  39                                                   jboolean _accepted,
  40                                                   jstring _new_string)
  41 {
  42     (void)env;(void)this;
  43
  44     accepted = (bool)_accepted;
  45     if (accepted)
  46     {
  47         new_string = _new_string;
  48         (*env)->NewGlobalRef(env, new_string); /* prevet GC'ing */
  49     }
  50     wakeup_signal(&kbd_wakeup);
  51 }
  52
  53 static void kdb_init(void)
  54 {
  55     JNIEnv e = *env_ptr;
  56     static jmethodID kbd_is_usable;
  57     if (RockboxKeyboardInput_class == NULL)
  58     {
  59         wakeup_init(&kbd_wakeup);
  60         /* get the class and its constructor */
  61         RockboxKeyboardInput_class = e->FindClass(env_ptr,
  62                                             "org/rockbox/RockboxKeyboardInput");
  63         jmethodID constructor = e->GetMethodID(env_ptr,
  64                                                RockboxKeyboardInput_class,
  65                                                "<init>", "()V");
  66         RockboxKeyboardInput_instance = e->NewObject(env_ptr,
  67                                                      RockboxKeyboardInput_class,
  68                                                      constructor);
  69         kbd_inputfunc = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  70                                        "kbd_input", "(Ljava/lang/String;)V");
  71         kbd_is_usable = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  72                                        "is_usable", "()Z");
  73     }
  74
  75     /* need to get it every time incase the activity died/restarted */
  76     while (!e->CallBooleanMethod(env_ptr, RockboxKeyboardInput_instance,
  77                                                             kbd_is_usable))
  78         sleep(HZ/10);
  79 }
  80
  81 int kbd_input(char* text, int buflen)
  82 {
  83     JNIEnv e = *env_ptr;
  84     jstring str = e->NewStringUTF(env_ptr, text);
  85     const char *utf8_string;
  86     kdb_init();
  87
  88     e->CallVoidMethod(env_ptr, RockboxKeyboardInput_instance,kbd_inputfunc,str);
  89
  90     wakeup_wait(&kbd_wakeup, TIMEOUT_BLOCK);
  91
  92     if (accepted)
  93     {
  94         utf8_string = e->GetStringUTFChars(env_ptr, new_string, 0);
  95         strlcpy(text, utf8_string, buflen);
  96         e->ReleaseStringUTFChars(env_ptr, new_string, utf8_string);
  97         e->DeleteGlobalRef(env_ptr, new_string);
  98     }
  99
 100     return !accepted; /* return 0 on success */
 101 }
 102
 103 int load_kbd(unsigned char* filename)
 104 {
 105     (void)filename;
 106     return 1;
 107 }
 108
 109 #endif