#include "e_mod_main.h"

/* gadcon requirements */
static E_Gadcon_Client *_gc_init(E_Gadcon * gc, const char *name, const char *id, const char *style);
static void             _gc_shutdown(E_Gadcon_Client * gcc);
static void             _gc_orient(E_Gadcon_Client * gcc, E_Gadcon_Orient orient);
static char            *_gc_label(E_Gadcon_Client_Class *client_class);
static                  Evas_Object *_gc_icon(E_Gadcon_Client_Class *client_class, Evas * evas);
static const char      *_gc_id_new(E_Gadcon_Client_Class *client_class);
static Eina_Bool              _deskshow_cb_event_desk_show(void *data, int type, void *event);

/* and actually define the gadcon class that this module provides (just 1) */
static const E_Gadcon_Client_Class _gadcon_class = {
   GADCON_CLIENT_CLASS_VERSION,
   "deskshow",
   {
      _gc_init, _gc_shutdown, _gc_orient, _gc_label, _gc_icon, _gc_id_new, NULL,
      e_gadcon_site_is_not_toolbar
   },
   E_GADCON_CLIENT_STYLE_PLAIN
};

/* actual module specifics */
typedef struct _Instance Instance;
struct _Instance
{
   E_Gadcon_Client *gcc;
   Evas_Object *o_button;
};

static void _button_cb_mouse_down(void *data, Evas * e, Evas_Object * obj, void *event_info);

static E_Module *desk_module = NULL;
Eina_List *handlers;

static E_Gadcon_Client *
_gc_init(E_Gadcon *gc, const char *name, const char *id, const char *style)
{
   Evas_Object *o;
   E_Gadcon_Client *gcc;
   Instance *inst;
   char buf[PATH_MAX];

   inst = E_NEW(Instance, 1);

   snprintf(buf, sizeof(buf), "%s/e-module-deskshow.edj", e_module_dir_get(desk_module));
   
   o = edje_object_add(gc->evas);
   if (!e_theme_edje_object_set(o, "base/theme/modules/deskshow", "modules/deskshow/main"))
     edje_object_file_set(o, buf, "modules/deskshow/main");

   evas_object_show(o);
   edje_object_signal_emit(o, "passive", "");

   gcc = e_gadcon_client_new(gc, name, id, style, o);
   gcc->data = inst;

   inst->gcc = gcc;
   inst->o_button = o;

   e_gadcon_client_util_menu_attach(gcc);

   evas_object_event_callback_add (o, EVAS_CALLBACK_MOUSE_DOWN,
                                   _button_cb_mouse_down, inst);

   handlers = eina_list_append(handlers,
                               ecore_event_handler_add(E_EVENT_DESK_SHOW,
                               _deskshow_cb_event_desk_show, inst));

   handlers = eina_list_append(handlers,
                               ecore_event_handler_add(E_EVENT_DESK_DESKSHOW,
                               _deskshow_cb_event_desk_show, inst));

   return gcc;
}

static void
_gc_shutdown(E_Gadcon_Client *gcc)
{
   Instance *inst;

   inst = gcc->data;
   while (handlers) 
     {
        ecore_event_handler_del(handlers->data);
        handlers = eina_list_remove_list(handlers, handlers);
     }

   evas_object_del(inst->o_button);
   E_FREE(inst);
}

static void
_gc_orient(E_Gadcon_Client *gcc, E_Gadcon_Orient orient)
{
   e_gadcon_client_aspect_set (gcc, 16, 16);
   e_gadcon_client_min_size_set (gcc, 16, 16);
}

static char *
_gc_label (E_Gadcon_Client_Class *client_class)
{
   return "Deskshow";
}

static Evas_Object *
_gc_icon(E_Gadcon_Client_Class *client_class, Evas * evas)
{
   Evas_Object *o;
   char buf[PATH_MAX];

   o = edje_object_add(evas);
   snprintf (buf, sizeof(buf), "%s/e-module-deskshow.edj", e_module_dir_get(desk_module));
   edje_object_file_set(o, buf, "icon");
   return o;
}

static const char *
_gc_id_new (E_Gadcon_Client_Class *client_class)
{
   return _gadcon_class.name;
}

static void
_button_cb_mouse_down (void *data, Evas *e, Evas_Object *obj, void *event_info)
{
  Evas_Event_Mouse_Down *ev;

  ev = event_info;
  if (ev->button == 1)
    {
      E_Zone *zone;

      zone = e_util_zone_current_get(e_manager_current_get());
      if (zone) e_desk_deskshow(zone);
    }
}

static Eina_Bool
_deskshow_cb_event_desk_show(void *data, int type, void *event)
{
   E_Event_Desk_Show *ev;
   E_Desk *desk;
   Instance *inst;

   inst = data;
   ev = event;
   desk = ev->desk;

   if (desk->deskshow_toggle)
     edje_object_signal_emit(inst->o_button, "active", "");
   else
     edje_object_signal_emit(inst->o_button, "passive", "");
   return EINA_TRUE;
}

/* module setup */
EAPI E_Module_Api e_modapi = {
  E_MODULE_API_VERSION,
  "Deskshow"
};

EAPI void *
e_modapi_init (E_Module * m)
{
   desk_module = m;
   e_gadcon_provider_register(&_gadcon_class);
   return desk_module;
}

EAPI int
e_modapi_shutdown (E_Module * m)
{
  desk_module = NULL;
  e_gadcon_provider_unregister(&_gadcon_class);
  return 1;
}

EAPI int
e_modapi_save(E_Module * m)
{
  return 1;
}
