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 yesno_class = e->FindClass(env_ptr,
  56                                           "org/rockbox/RockboxYesno");
  57         jmethodID constructor = e->GetMethodID(env_ptr,
  58                                                yesno_class,
  59                                                "<init>", "()V");
  60         jobject yesno_instance = e->NewObject(env_ptr,
  61                                               yesno_class,
  62                                               constructor);
  63         RockboxYesno_instance = e->NewGlobalRef(env_ptr, yesno_instance);
  64         yesno_func = e->GetMethodID(env_ptr, yesno_class,
  65                                        "yesno_display",
  66                                        "(Ljava/lang/String;"
  67                                        "Ljava/lang/String;"
  68                                        "Ljava/lang/String;)V");
  69         yesno_is_usable = e->GetMethodID(env_ptr, yesno_class,
  70                                        "is_usable", "()Z");
  71     }
  72     /* need to get it every time incase the activity died/restarted */
  73     while (!e->CallBooleanMethod(env_ptr, RockboxYesno_instance,
  74                                  yesno_is_usable))
  75         sleep(HZ/10);
  76 }
  77
  78 jstring build_message(const struct text_message *message)
  79 {
  80     char msg[1024] = "";
  81     JNIEnv e = *env_ptr;
  82     int i;
  83     for(i=0; i<message->nb_lines; i++)
  84     {
  85         char* text = P2STR((unsigned char *)message->message_lines[i]);
  86         if (i>0)
  87             strlcat(msg, "\n", 1024);
  88         strlcat(msg, text, 1024);
  89     }
  90     /* make sure the questions end in a ?, for some reason they dont! */
  91     if (!strrchr(msg, '?'))
  92         strlcat(msg, "?", 1024);
  93     return e->NewStringUTF(env_ptr, msg);
  94 }
  95
  96 enum yesno_res gui_syncyesno_run(const struct text_message * main_message,
  97                                  const struct text_message * yes_message,
  98                                  const struct text_message * no_message)
  99 {
 100     (void)yes_message;
 101     (void)no_message;
 102     yesno_init();
 103
 104     JNIEnv e = *env_ptr;
 105     jstring message = build_message(main_message);
 106     jstring yes = (*env_ptr)->NewStringUTF(env_ptr, str(LANG_SET_BOOL_YES));
 107     jstring no  = (*env_ptr)->NewStringUTF(env_ptr, str(LANG_SET_BOOL_NO));
 108
 109     e->CallVoidMethod(env_ptr, RockboxYesno_instance, yesno_func,
 110                       message, yes, no);
 111
 112     semaphore_wait(&yesno_done, TIMEOUT_BLOCK);
 113
 114     e->DeleteLocalRef(env_ptr, message);
 115     e->DeleteLocalRef(env_ptr, yes);
 116     e->DeleteLocalRef(env_ptr, no);
 117
 118     return ret ? YESNO_YES : YESNO_NO;
 119 }
 120
 121 #endif