/*
 * Java ATK Wrapper for GNOME
 * Copyright (C) 2009 Sun Microsystems Inc.
 * Copyright (C) 2015 Magdalen Berns <m.berns@thismagpie.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <glib-object.h>
#include <glib/gprintf.h>
#include "jawutil.h"
#include "jawimpl.h"
#include "jawtoplevel.h"
#include "jawobject.h"

#ifdef __cplusplus
extern "C" {
#endif

static void jaw_impl_class_init (JawImplClass *klass);
//static void			jaw_impl_init				(JawImpl		*impl);
static void jaw_impl_dispose(GObject *gobject);
static void jaw_impl_finalize(GObject *gobject);

static gpointer jaw_impl_get_interface_data(JawObject *jaw_obj, guint iface);

/* AtkObject */
static void jaw_impl_initialize(AtkObject *atk_obj, gpointer data);
static AtkObject* jaw_impl_get_parent(AtkObject *atk_obj);
static AtkObject* jaw_impl_ref_child (AtkObject *atk_obj, gint i);
static AtkRelationSet* jaw_impl_ref_relation_set(AtkObject *atk_obj);

extern void jaw_action_interface_init(AtkActionIface*);
extern gpointer jaw_action_data_init(jobject);
extern void jaw_action_data_finalize(gpointer);

extern void jaw_component_interface_init(AtkComponentIface*);
extern gpointer jaw_component_data_init(jobject);
extern void jaw_component_data_finalize(gpointer);

extern void jaw_text_interface_init(AtkTextIface*);
extern gpointer	jaw_text_data_init(jobject);
extern void jaw_text_data_finalize(gpointer);

extern void jaw_editable_text_interface_init(AtkEditableTextIface*);
extern gpointer jaw_editable_text_data_init(jobject);
extern void jaw_editable_text_data_finalize (gpointer);

extern void jaw_hypertext_interface_init(AtkHypertextIface*);
extern gpointer jaw_hypertext_data_init(jobject);
extern void jaw_hypertext_data_finalize(gpointer);

extern void jaw_image_interface_init(AtkImageIface*);
extern gpointer jaw_image_data_init(jobject);
extern void jaw_image_data_finalize(gpointer);

extern void jaw_selection_interface_init(AtkSelectionIface*);
extern gpointer jaw_selection_data_init(jobject);
extern void jaw_selection_data_finalize(gpointer);

extern void jaw_value_interface_init (AtkValueIface*);
extern gpointer jaw_value_data_init (jobject);
extern void jaw_value_data_finalize (gpointer);

extern void jaw_table_interface_init (AtkTableIface*);
extern gpointer jaw_table_data_init (jobject);
extern void jaw_table_data_finalize (gpointer);

extern void jaw_table_cell_interface_init (AtkTableCellIface*);
extern gpointer jaw_table_cell_data_init (jobject);
extern void jaw_table_cell_data_finalize (gpointer);

typedef struct _JawInterfaceInfo {
  void (*finalize) (gpointer);
  gpointer data;
} JawInterfaceInfo;

static gpointer jaw_impl_parent_class = NULL;

static GHashTable *typeTable = NULL;
static GHashTable *objectTable = NULL;
static gboolean jaw_debug = FALSE;

static void
object_table_insert (JNIEnv *jniEnv, jobject ac, JawImpl* jaw_impl)
{
  jclass classAccessibleContext = (*jniEnv)->FindClass( jniEnv,
                                                       "javax/accessibility/AccessibleContext");
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "hashCode",
                                          "()I");
  gint hash_key = (gint)(*jniEnv)->CallIntMethod(jniEnv, ac, jmid);
  g_hash_table_insert(objectTable, GINT_TO_POINTER(hash_key), GINT_TO_POINTER(jaw_impl));
}

static JawImpl*
object_table_lookup (JNIEnv *jniEnv, jobject ac)
{
  jclass classAccessibleContext = (*jniEnv)->FindClass( jniEnv,
                                                       "javax/accessibility/AccessibleContext" );
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "hashCode",
                                          "()I" );
  gint hash_key = (gint)(*jniEnv)->CallIntMethod( jniEnv, ac, jmid );
  gpointer value = NULL;
  if (objectTable==NULL)
    return NULL;

  value = g_hash_table_lookup(objectTable, GINT_TO_POINTER(hash_key));
  return (JawImpl*)value;
}

static void
object_table_remove(JNIEnv *jniEnv, jobject ac)
{
  jclass classAccessibleContext = (*jniEnv)->FindClass( jniEnv,
                                                       "javax/accessibility/AccessibleContext" );
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "hashCode",
                                          "()I" );
  gint hash_key = (gint)(*jniEnv)->CallIntMethod( jniEnv, ac, jmid );

  g_hash_table_remove(objectTable, GINT_TO_POINTER(hash_key));
}

GHashTable*
jaw_impl_get_object_hash_table(void)
{
  return objectTable;
}

static void
aggregate_interface(JNIEnv *jniEnv, JawObject *jaw_obj, guint tflag)
{
  JawImpl *jaw_impl = JAW_IMPL(tflag, jaw_obj);

  jobject ac = jaw_obj->acc_context;
  jaw_impl->ifaceTable = g_hash_table_new(NULL, NULL);

  if (tflag & INTERFACE_ACTION)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_action_data_init(ac);
    info->finalize = jaw_action_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_ACTION,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_COMPONENT)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_component_data_init(ac);
    info->finalize = jaw_component_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_COMPONENT,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_TEXT)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_text_data_init(ac);
    info->finalize = jaw_text_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_TEXT,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_EDITABLE_TEXT)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_editable_text_data_init(ac);
    info->finalize = jaw_editable_text_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_EDITABLE_TEXT,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_HYPERTEXT)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_hypertext_data_init(ac);
    info->finalize = jaw_hypertext_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_HYPERTEXT,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_IMAGE)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_image_data_init(ac);
    info->finalize = jaw_image_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_IMAGE,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_SELECTION)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_selection_data_init(ac);
    info->finalize = jaw_selection_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_SELECTION,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_VALUE)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_value_data_init(ac);
    info->finalize = jaw_value_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_VALUE,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_TABLE)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_table_data_init(ac);
    info->finalize = jaw_table_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_TABLE,
                        (gpointer)info);
  }

  if (tflag & INTERFACE_TABLE_CELL)
  {
    JawInterfaceInfo *info = g_new(JawInterfaceInfo, 1);
    info->data = jaw_table_cell_data_init(ac);
    info->finalize = jaw_table_cell_data_finalize;
    g_hash_table_insert(jaw_impl->ifaceTable,
                        (gpointer)INTERFACE_TABLE_CELL,
                        (gpointer)info);
  }
}

JawImpl*
jaw_impl_get_instance (JNIEnv *jniEnv, jobject ac)
{
  JawImpl *jaw_impl;
  jniEnv = jaw_util_get_jni_env();

  if (jniEnv == NULL)
    return NULL;

  if (objectTable == NULL)
    objectTable = g_hash_table_new (NULL, NULL);

  jaw_impl = object_table_lookup(jniEnv, ac);

  if (jaw_impl == NULL)
  {
    jobject global_ac = (*jniEnv)->NewGlobalRef(jniEnv, ac);
    if (global_ac != NULL)
    {
      guint tflag = jaw_util_get_tflag_from_jobj(jniEnv, global_ac);
      jaw_impl = (JawImpl*)g_object_new(JAW_TYPE_IMPL(tflag), NULL);
      if (jaw_impl != NULL)
      {
        JawObject *jaw_obj = JAW_OBJECT(jaw_impl);

        if (jaw_obj != NULL)
        {
          jaw_obj->acc_context = global_ac;
          jaw_obj->storedData = g_hash_table_new(g_str_hash, g_str_equal);
          aggregate_interface(jniEnv, jaw_obj, tflag);
          atk_object_initialize(ATK_OBJECT(jaw_impl), NULL);
          object_table_insert(jniEnv, global_ac, jaw_impl);
        } else
        {
          if (jaw_debug)
            g_warning("jaw_impl_get_instance: jaw_obj == NULL");
          return NULL;
        }
      } else
      {
        if (jaw_debug)
          g_warning("jaw_impl_get_instance: jaw_impl == NULL");
      }
    } else
    {
      if (jaw_debug)
        g_warning("jaw_impl_get_instance: global_ac == NULL");
      return NULL;
    }
  }
  return jaw_impl;
}

JawImpl*
jaw_impl_find_instance (JNIEnv *jniEnv, jobject ac)
{
  JawImpl *jaw_impl;

  jaw_impl = object_table_lookup(jniEnv, ac);
  if (jaw_impl == NULL)
  {
    if (jaw_debug)
      g_warning("jaw_impl_find_instance: jaw_impl");
    return NULL;
  }

  return jaw_impl;
}

static void
jaw_impl_class_intern_init (gpointer klass)
{
  if (jaw_impl_parent_class == NULL)
  {
    jaw_impl_parent_class = g_type_class_peek_parent (klass);
  }

  jaw_impl_class_init ((JawImplClass*) klass);
}

GType
jaw_impl_get_type (guint tflag)
{
  GType type;

  static const GInterfaceInfo atk_action_info =
  {
    (GInterfaceInitFunc) jaw_action_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_component_info =
  {
    (GInterfaceInitFunc) jaw_component_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_text_info =
  {
    (GInterfaceInitFunc) jaw_text_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_editable_text_info = 
  {
    (GInterfaceInitFunc) jaw_editable_text_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_hypertext_info =
  {
    (GInterfaceInitFunc) jaw_hypertext_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_image_info =
  {
    (GInterfaceInitFunc) jaw_image_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_selection_info =
  {
    (GInterfaceInitFunc) jaw_selection_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_value_info =
  {
    (GInterfaceInitFunc) jaw_value_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_table_info =
  {
    (GInterfaceInitFunc) jaw_table_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  static const GInterfaceInfo atk_table_cell_info =
  {
    (GInterfaceInitFunc) jaw_table_cell_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
  };

  if (typeTable == NULL) {
    typeTable = g_hash_table_new( NULL, NULL );
  }

  type = GPOINTER_TO_GTYPE(g_hash_table_lookup(typeTable, GUINT_TO_POINTER(tflag)));
  if (type == 0) {
    GTypeInfo tinfo = {
      sizeof(JawImplClass),
      (GBaseInitFunc) NULL, /* base init */
      (GBaseFinalizeFunc) NULL, /* base finalize */
      (GClassInitFunc) jaw_impl_class_intern_init, /*class init */
      (GClassFinalizeFunc) NULL, /* class finalize */
      NULL, /* class data */
      sizeof(JawImpl), /* instance size */
      0, /* nb preallocs */
      (GInstanceInitFunc) NULL, /* instance init */
      NULL /* value table */
    };

    gchar className[20];
    g_sprintf(className, "JawImpl_%d", tflag);

    type = g_type_register_static(JAW_TYPE_OBJECT, className, &tinfo, 0);

    if (tflag & INTERFACE_ACTION)
      g_type_add_interface_static (type, ATK_TYPE_ACTION, &atk_action_info);

    if (tflag & INTERFACE_COMPONENT)
      g_type_add_interface_static (type, ATK_TYPE_COMPONENT,&atk_component_info);

    if (tflag & INTERFACE_TEXT)
      g_type_add_interface_static (type, ATK_TYPE_TEXT,&atk_text_info);

    if (tflag & INTERFACE_EDITABLE_TEXT)
      g_type_add_interface_static (type, ATK_TYPE_EDITABLE_TEXT, &atk_editable_text_info);

    if (tflag & INTERFACE_HYPERTEXT)
      g_type_add_interface_static (type, ATK_TYPE_HYPERTEXT,&atk_hypertext_info);

    if (tflag & INTERFACE_IMAGE)
      g_type_add_interface_static (type, ATK_TYPE_IMAGE, &atk_image_info);

    if (tflag & INTERFACE_SELECTION)
      g_type_add_interface_static (type, ATK_TYPE_SELECTION, &atk_selection_info);

    if (tflag & INTERFACE_VALUE)
      g_type_add_interface_static (type, ATK_TYPE_VALUE, &atk_value_info);

    if (tflag & INTERFACE_TABLE)
      g_type_add_interface_static (type, ATK_TYPE_TABLE, &atk_table_info);

    if (tflag & INTERFACE_TABLE_CELL)
      g_type_add_interface_static (type, ATK_TYPE_TABLE_CELL, &atk_table_cell_info);

    g_hash_table_insert(typeTable, GINT_TO_POINTER(tflag), GTYPE_TO_POINTER(type));
  }

  return type;
}

static void
jaw_impl_class_init(JawImplClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  gobject_class->dispose = jaw_impl_dispose;
  gobject_class->finalize = jaw_impl_finalize;

  AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
  atk_class->initialize = jaw_impl_initialize;
  atk_class->get_parent = jaw_impl_get_parent;
  atk_class->ref_child = jaw_impl_ref_child;
  atk_class->ref_relation_set = jaw_impl_ref_relation_set;

  JawObjectClass *jaw_class = JAW_OBJECT_CLASS (klass);
  jaw_class->get_interface_data = jaw_impl_get_interface_data;
}
/*
static void
jaw_impl_init(JawImpl *impl)
{
	jaw_impl->ifaceTable = g_hash_table_new(NULL, NULL);
}
*/
static void
jaw_impl_dispose(GObject *gobject)
{
  /* Chain up to parent's dispose */
  G_OBJECT_CLASS(jaw_impl_parent_class)->dispose(gobject);
}

static void
jaw_impl_finalize(GObject *gobject)
{
  JawObject *jaw_obj = JAW_OBJECT(gobject);
  jobject global_ac = jaw_obj->acc_context;

  JawImpl *jaw_impl = (JawImpl*)jaw_obj;

  JNIEnv *jniEnv = jaw_util_get_jni_env();
  object_table_remove( jniEnv, global_ac );

  (*jniEnv)->DeleteGlobalRef(jniEnv, global_ac);
  jaw_obj->acc_context = NULL;

  /* Interface finalize */
  GHashTableIter *iter = NULL;
  gpointer *key = NULL;
  gpointer *value = NULL;

  g_hash_table_iter_init(iter, jaw_impl->ifaceTable);
  while (g_hash_table_iter_next(iter, key, value))
  {
    JawInterfaceInfo *info = (JawInterfaceInfo*)value;
    info->finalize(info->data);

    g_free(info);

    g_hash_table_iter_remove(iter);
  }
  if (jaw_impl->ifaceTable != NULL)
  {
    g_hash_table_unref(jaw_impl->ifaceTable);
    g_hash_table_destroy(jaw_obj->storedData);
  }
  /* Chain up to parent's finalize */
  G_OBJECT_CLASS(jaw_impl_parent_class)->finalize(gobject);
}

static gpointer
jaw_impl_get_interface_data (JawObject *jaw_obj, guint iface)
{
  JawImpl *jaw_impl = (JawImpl*)jaw_obj;

  if (jaw_impl->ifaceTable == NULL || jaw_impl == NULL)
    return NULL;

  JawInterfaceInfo *info = g_hash_table_lookup(jaw_impl->ifaceTable,GUINT_TO_POINTER(iface));

  if (info != NULL)
    return info->data;

  return NULL;
}

static void
jaw_impl_initialize (AtkObject *atk_obj, gpointer data)
{
  ATK_OBJECT_CLASS(jaw_impl_parent_class)->initialize(atk_obj, data);

  JawObject *jaw_obj = JAW_OBJECT(atk_obj);
  jobject ac = jaw_obj->acc_context;
  JNIEnv *jniEnv = jaw_util_get_jni_env();

  jclass classAtkWrapper = (*jniEnv)->FindClass(jniEnv,
                                                "org/GNOME/Accessibility/AtkWrapper");
  jmethodID jmid = (*jniEnv)->GetStaticMethodID(jniEnv,
                                                classAtkWrapper,
                                                "registerPropertyChangeListener",
                                                "(Ljavax/accessibility/AccessibleContext;)V");
  (*jniEnv)->CallStaticVoidMethod(jniEnv, classAtkWrapper, jmid, ac);
}

static AtkObject*
jaw_impl_get_parent (AtkObject *atk_obj)
{
  if (jaw_toplevel_get_child_index(JAW_TOPLEVEL(atk_get_root()), atk_obj) != -1)
  {
    return ATK_OBJECT(atk_get_root());
  }

  JawObject *jaw_obj = JAW_OBJECT(atk_obj);
  jobject ac = jaw_obj->acc_context;
  JNIEnv *jniEnv = jaw_util_get_jni_env();

  jclass classAccessibleContext = (*jniEnv)->FindClass(jniEnv,
                                                       "javax/accessibility/AccessibleContext" );
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "getAccessibleParent",
                                          "()Ljavax/accessibility/Accessible;");
  jobject jparent = (*jniEnv)->CallObjectMethod( jniEnv, ac, jmid );
  if (jparent != NULL )
  {
    jclass classAccessible = (*jniEnv)->FindClass(jniEnv,
                                                  "javax/accessibility/Accessible" );
    jmid = (*jniEnv)->GetMethodID(jniEnv,
                                  classAccessible,
                                  "getAccessibleContext",
                                  "()Ljavax/accessibility/AccessibleContext;");
    jobject parent_ac = (*jniEnv)->CallObjectMethod( jniEnv, jparent, jmid );

    AtkObject *obj = (AtkObject*) object_table_lookup( jniEnv, parent_ac );
    if (obj != NULL ) {
       return obj;
    }
  }

  return ATK_OBJECT(atk_get_root());
}

static AtkObject*
jaw_impl_ref_child (AtkObject *atk_obj, gint i)
{
  JawObject *jaw_obj = JAW_OBJECT(atk_obj);
  jobject ac = jaw_obj->acc_context;
  JNIEnv *jniEnv = jaw_util_get_jni_env();

  jclass classAccessibleContext = (*jniEnv)->FindClass(jniEnv,
                                                       "javax/accessibility/AccessibleContext" );
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "getAccessibleChild",
                                          "(I)Ljavax/accessibility/Accessible;" );
  jobject jchild = (*jniEnv)->CallObjectMethod( jniEnv, ac, jmid, i );
  if (jchild == NULL)
  {
    return NULL;
  }

  jclass classAccessible = (*jniEnv)->FindClass( jniEnv, "javax/accessibility/Accessible" );
  jmid = (*jniEnv)->GetMethodID(jniEnv,
                                classAccessible,
                                "getAccessibleContext",
                                "()Ljavax/accessibility/AccessibleContext;" );
  jobject child_ac = (*jniEnv)->CallObjectMethod( jniEnv, jchild, jmid );

  AtkObject *obj = (AtkObject*) jaw_impl_get_instance( jniEnv, child_ac );
  if (G_OBJECT(obj) != NULL)
    g_object_ref(G_OBJECT(obj));

  return obj;
}

static jstring
get_java_relation_key_constant (JNIEnv *jniEnv, const gchar* strKey)
{
  jclass classAccessibleRelation = (*jniEnv)->FindClass(jniEnv,
                                                        "javax/accessibility/AccessibleRelation");
  jfieldID jfid = (*jniEnv)->GetStaticFieldID(jniEnv,
                                              classAccessibleRelation,
                                              strKey,
                                              "Ljava/lang/String;");
  jstring jkey = (*jniEnv)->GetStaticObjectField(jniEnv,
                                                 classAccessibleRelation,
                                                 jfid);

  return jkey;
}

static gboolean
is_java_relation_key (JNIEnv *jniEnv,jstring jKey, const gchar* strKey)
{
  jstring jConstKey = get_java_relation_key_constant (jniEnv, strKey);

  if ( (*jniEnv)->IsSameObject(jniEnv, jKey, jConstKey) )
  {
    return TRUE;
  } else
  {
    return FALSE;
  }
}

static AtkRelationType
get_atk_relation_type_from_java_key (JNIEnv *jniEnv, jstring jrel_key)
{
  if ( is_java_relation_key(jniEnv, jrel_key, "CHILD_NODE_OF") )
  {
    return ATK_RELATION_NODE_CHILD_OF;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "CONTROLLED_BY") )
  {
    return ATK_RELATION_CONTROLLED_BY;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "CONTROLLER_FOR") )
  {
    return ATK_RELATION_CONTROLLER_FOR;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "EMBEDDED_BY") )
  {
    return ATK_RELATION_EMBEDDED_BY;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "EMBEDS") )
  {
    return ATK_RELATION_EMBEDS;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "FLOWS_FROM") )
  {
    return ATK_RELATION_FLOWS_FROM;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "FLOWS_TO") )
  {
    return ATK_RELATION_FLOWS_TO;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "LABEL_FOR") )
  {
    return ATK_RELATION_LABEL_FOR;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "LABELED_BY") )
  {
    return ATK_RELATION_LABELLED_BY;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "MEMBER_OF") )
  {
    return ATK_RELATION_MEMBER_OF;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "PARENT_WINDOW_OF") )
  {
    return ATK_RELATION_PARENT_WINDOW_OF;
  }
  if ( is_java_relation_key(jniEnv, jrel_key, "SUBWINDOW_OF") )
  {
    return ATK_RELATION_SUBWINDOW_OF;
  }

  return ATK_RELATION_NULL;
}

AtkRelationType
jaw_impl_get_atk_relation_type(JNIEnv *env, jstring jrel_key)
{
  return get_atk_relation_type_from_java_key(env, jrel_key);
}

static AtkRelationSet*
jaw_impl_ref_relation_set (AtkObject *atk_obj)
{
  if (atk_obj->relation_set)
    g_object_unref(G_OBJECT(atk_obj->relation_set));
  atk_obj->relation_set = atk_relation_set_new();
  if(atk_obj == NULL)
    return NULL;

  JawObject *jaw_obj = JAW_OBJECT(atk_obj);
  jobject ac = jaw_obj->acc_context;
  JNIEnv *jniEnv = jaw_util_get_jni_env();

  jclass classAccessibleContext = (*jniEnv)->FindClass(jniEnv,
                                                       "javax/accessibility/AccessibleContext" );
  jmethodID jmid = (*jniEnv)->GetMethodID(jniEnv,
                                          classAccessibleContext,
                                          "getAccessibleRelationSet",
                                          "()Ljavax/accessibility/AccessibleRelationSet;" );
  jobject jrel_set = (*jniEnv)->CallObjectMethod( jniEnv, ac, jmid );

  jclass classAccessibleRelationSet = (*jniEnv)->FindClass( jniEnv,
                                                           "javax/accessibility/AccessibleRelationSet");
  jmid = (*jniEnv)->GetMethodID(jniEnv,
                                classAccessibleRelationSet,
                                "toArray",
                                "()[Ljavax/accessibility/AccessibleRelation;");
  jobjectArray jrel_arr = (*jniEnv)->CallObjectMethod(jniEnv, jrel_set, jmid);
  jsize jarr_size = (*jniEnv)->GetArrayLength(jniEnv, jrel_arr);

  jsize i;
  for (i = 0; i < jarr_size; i++)
  {
    jobject jrel = (*jniEnv)->GetObjectArrayElement(jniEnv, jrel_arr, i);
    jclass classAccessibleRelation = (*jniEnv)->FindClass(jniEnv,
                                                          "javax/accessibility/AccessibleRelation");
    jmid = (*jniEnv)->GetMethodID(jniEnv,
                                  classAccessibleRelation,
                                  "getKey",
                                  "()Ljava/lang/String;");
    jstring jrel_key = (*jniEnv)->CallObjectMethod( jniEnv, jrel, jmid );
    AtkRelationType rel_type = get_atk_relation_type_from_java_key(jniEnv, jrel_key);

    jmid = (*jniEnv)->GetMethodID(jniEnv,
                                  classAccessibleRelation,
                                  "getTarget",
                                  "()[Ljava/lang/Object;");
    jobjectArray jtarget_arr = (*jniEnv)->CallObjectMethod(jniEnv, jrel, jmid);
    jsize jtarget_size = (*jniEnv)->GetArrayLength(jniEnv, jtarget_arr);

    jsize j;
    for (j = 0; j < jtarget_size; j++)
    {
      jobject jtarget = (*jniEnv)->GetObjectArrayElement(jniEnv, jtarget_arr, j);
      jclass classAccessible = (*jniEnv)->FindClass( jniEnv,
                                                    "javax/accessibility/Accessible");
      if ((*jniEnv)->IsInstanceOf(jniEnv, jtarget, classAccessible))
      {
        jmid = (*jniEnv)->GetMethodID(jniEnv,
                                      classAccessible,
                                      "getAccessibleContext",
                                      "()Ljavax/accessibility/AccessibleContext;");
        jobject target_ac = (*jniEnv)->CallObjectMethod(jniEnv, jtarget, jmid);

        JawImpl *target_obj = jaw_impl_get_instance(jniEnv, target_ac);
        if(target_obj == NULL)
          return NULL;
        atk_object_add_relationship(atk_obj, rel_type, (AtkObject*) target_obj);
      }
    }
  }
  if(atk_obj->relation_set == NULL)
    return NULL;
  if (G_OBJECT(atk_obj->relation_set) != NULL)
    g_object_ref (atk_obj->relation_set);

  return atk_obj->relation_set;
}

#ifdef __cplusplus
}
#endif