apps/hosted/android/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 #include "lang.h"
  29
  30 extern JNIEnv          *env_ptr;
  31 static jclass           RockboxKeyboardInput_class;
  32 static jobject          RockboxKeyboardInput_instance;
  33 static jmethodID        kbd_inputfunc;
  34 static struct semaphore kbd_wakeup;
  35 static bool             accepted;
  36 static jstring          new_string;
  37
  38 JNIEXPORT void JNICALL
  39 Java_org_rockbox_RockboxKeyboardInput_put_1result(JNIEnv *env, jobject this,
  40                                                   jboolean _accepted,
  41                                                   jstring _new_string)
  42 {
  43     (void)env;(void)this;
  44
  45     accepted = (bool)_accepted;
  46     if (accepted)
  47     {
  48         new_string = _new_string;
  49         (*env)->NewGlobalRef(env, new_string); /* prevet GC'ing */
  50     }
  51     semaphore_release(&kbd_wakeup);
  52 }
  53
  54 static void kdb_init(void)
  55 {
  56     JNIEnv e = *env_ptr;
  57     static jmethodID kbd_is_usable;
  58     if (RockboxKeyboardInput_class == NULL)
  59     {
  60         semaphore_init(&kbd_wakeup, 1, 0);
  61         /* get the class and its constructor */
  62         jclass kbInput_class = e->FindClass(env_ptr,
  63                                             "org/rockbox/RockboxKeyboardInput");
  64         RockboxKeyboardInput_class = e->NewGlobalRef(env_ptr, kbInput_class);
  65         jmethodID constructor = e->GetMethodID(env_ptr,
  66                                                RockboxKeyboardInput_class,
  67                                                "<init>", "()V");
  68         jobject kbInput_instance = e->NewObject(env_ptr,
  69                                                 RockboxKeyboardInput_class,
  70                                                 constructor);
  71         RockboxKeyboardInput_instance = e->NewGlobalRef(env_ptr,
  72                                                         kbInput_instance);
  73         kbd_inputfunc = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  74                                        "kbd_input",
  75                                        "(Ljava/lang/String;"
  76                                        "Ljava/lang/String;"
  77                                        "Ljava/lang/String;)V");
  78         kbd_is_usable = e->GetMethodID(env_ptr, RockboxKeyboardInput_class,
  79                                        "is_usable", "()Z");
  80     }
  81
  82     /* need to get it every time incase the activity died/restarted */
  83     while (!e->CallBooleanMethod(env_ptr, RockboxKeyboardInput_instance,
  84                                                             kbd_is_usable))
  85         sleep(HZ/10);
  86 }
  87
  88 int kbd_input(char* text, int buflen)
  89 {
  90     JNIEnv e            = *env_ptr;
  91     jstring str         = e->NewStringUTF(env_ptr, text);
  92     jstring ok_text     = e->NewStringUTF(env_ptr, str(LANG_KBD_OK));
  93     jstring cancel_text = e->NewStringUTF(env_ptr, str(LANG_KBD_CANCEL));
  94     const char *utf8_string;
  95     kdb_init();
  96
  97     e->CallVoidMethod(env_ptr, RockboxKeyboardInput_instance,kbd_inputfunc,
  98                       str, ok_text, cancel_text);
  99
 100     semaphore_wait(&kbd_wakeup, TIMEOUT_BLOCK);
 101
 102     if (accepted)
 103     {
 104         utf8_string = e->GetStringUTFChars(env_ptr, new_string, 0);
 105         strlcpy(text, utf8_string, buflen);
 106         e->ReleaseStringUTFChars(env_ptr, new_string, utf8_string);
 107         e->DeleteGlobalRef(env_ptr, new_string);
 108     }
 109     e->DeleteLocalRef(env_ptr, str);
 110     e->DeleteLocalRef(env_ptr, ok_text);
 111     e->DeleteLocalRef(env_ptr, cancel_text);
 112
 113     return !accepted; /* return 0 on success */
 114 }
 115
 116 int load_kbd(unsigned char* filename)
 117 {
 118     (void)filename;
 119     return 1;
 120 }
 121
 122 #endif