apps/hosted/android/yesno.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 "yesno.h"
  28 #include "settings.h"
  29 #include "lang.h"
  30 #include "kernel.h"
  31
  32 extern JNIEnv   *env_ptr;
  33 static jobject   RockboxYesno_instance = NULL;
  34 static jmethodID yesno_func;
  35 static struct semaphore    yesno_done;
  36 static bool      ret;
  37
  38 JNIEXPORT void JNICALL
  39 Java_org_rockbox_RockboxYesno_put_1result(JNIEnv *env, jobject this, jboolean result)
  40 {
  41     (void)env;
  42     (void)this;
  43     ret = (bool)result;
  44     semaphore_release(&yesno_done);
  45 }
  46
  47 static void yesno_init(void)
  48 {
  49     JNIEnv e = *env_ptr;
  50     static jmethodID yesno_is_usable;
  51     if (RockboxYesno_instance == NULL)
  52     {
  53         semaphore_init(&yesno_done, 1, 0);
  54         /* get the class and its constructor */
  55         jclass RockboxYesno_class = e->FindClass(env_ptr,
  56                                                  "org/rockbox/RockboxYesno");
  57         jmethodID constructor = e->GetMethodID(env_ptr,
  58                                                RockboxYesno_class,
  59                                                "<init>", "()V");
  60         RockboxYesno_instance = e->NewObject(env_ptr,
  61                                                      RockboxYesno_class,
  62                                                      constructor);
  63         yesno_func = e->GetMethodID(env_ptr, RockboxYesno_class,
  64                                        "yesno_display",
  65                                        "(Ljava/lang/String;"
  66                                        "Ljava/lang/String;"
  67                                        "Ljava/lang/String;)V");
  68         yesno_is_usable = e->GetMethodID(env_ptr, RockboxYesno_class,
  69                                        "is_usable", "()Z");
  70     }
  71     /* need to get it every time incase the activity died/restarted */
  72     while (!e->CallBooleanMethod(env_ptr, RockboxYesno_instance,
  73                                  yesno_is_usable))
  74         sleep(HZ/10);
  75 }
  76
  77 jstring build_message(const struct text_message *message)
  78 {
  79     char msg[1024] = "";
  80     JNIEnv e = *env_ptr;
  81     int i;
  82     for(i=0; i<message->nb_lines; i++)
  83     {
  84         char* text = P2STR((unsigned char *)message->message_lines[i]);
  85         if (i>0)
  86             strlcat(msg, "\n", 1024);
  87         strlcat(msg, text, 1024);
  88     }
  89     /* make sure the questions end in a ?, for some reason they dont! */
  90     if (!strrchr(msg, '?'))
  91         strlcat(msg, "?", 1024);
  92     return e->NewStringUTF(env_ptr, msg);
  93 }
  94
  95 enum yesno_res gui_syncyesno_run(const struct text_message * main_message,
  96                                  const struct text_message * yes_message,
  97                                  const struct text_message * no_message)
  98 {
  99     (void)yes_message;
 100     (void)no_message;
 101     yesno_init();
 102
 103     JNIEnv e = *env_ptr;
 104     jstring message = build_message(main_message);
 105     jstring yes = (*env_ptr)->NewStringUTF(env_ptr, str(LANG_SET_BOOL_YES));
 106     jstring no  = (*env_ptr)->NewStringUTF(env_ptr, str(LANG_SET_BOOL_NO));
 107
 108     e->CallVoidMethod(env_ptr, RockboxYesno_instance, yesno_func,
 109                       message, yes, no);
 110
 111     semaphore_wait(&yesno_done, TIMEOUT_BLOCK);
 112
 113     e->DeleteLocalRef(env_ptr, message);
 114     e->DeleteLocalRef(env_ptr, yes);
 115     e->DeleteLocalRef(env_ptr, no);
 116
 117     return ret ? YESNO_YES : YESNO_NO;
 118 }
 119
 120 #endif