#include "e.h"

/* actual module specifics */
typedef struct _Instance Instance;

struct _Instance
{
   Evas_Object     *o_button;
   E_Menu          *main_menu;
};

static void
do_orient(Instance *inst, E_Gadget_Site_Orient orient, E_Gadget_Site_Anchor anchor)
{
   char buf[4096];
   const char *s = "float";

   if (anchor & E_GADGET_SITE_ANCHOR_LEFT)
     {
        if (anchor & E_GADGET_SITE_ANCHOR_TOP)
          {
             switch (orient)
               {
                case E_GADGET_SITE_ORIENT_HORIZONTAL:
                  s = "top_left";
                  break;
                case E_GADGET_SITE_ORIENT_VERTICAL:
                  s = "left_top";
                  break;
                case E_GADGET_SITE_ORIENT_NONE:
                  s = "left_top";
                  break;
               }
          }
        else if (anchor & E_GADGET_SITE_ANCHOR_BOTTOM)
          {
             switch (orient)
               {
                case E_GADGET_SITE_ORIENT_HORIZONTAL:
                  s = "bottom_left";
                  break;
                case E_GADGET_SITE_ORIENT_VERTICAL:
                  s = "left_bottom";
                  break;
                case E_GADGET_SITE_ORIENT_NONE:
                  s = "left_bottom";
                  break;
               }
          }
        else
          s = "left";
     }
   else if (anchor & E_GADGET_SITE_ANCHOR_RIGHT)
     {
        if (anchor & E_GADGET_SITE_ANCHOR_TOP)
          {
             switch (orient)
               {
                case E_GADGET_SITE_ORIENT_HORIZONTAL:
                  s = "top_right";
                  break;
                case E_GADGET_SITE_ORIENT_VERTICAL:
                  s = "right_top";
                  break;
                case E_GADGET_SITE_ORIENT_NONE:
                  s = "right_top";
                  break;
               }
          }
        else if (anchor & E_GADGET_SITE_ANCHOR_BOTTOM)
          {
             switch (orient)
               {
                case E_GADGET_SITE_ORIENT_HORIZONTAL:
                  s = "bottom_right";
                  break;
                case E_GADGET_SITE_ORIENT_VERTICAL:
                  s = "right_bottom";
                  break;
                case E_GADGET_SITE_ORIENT_NONE:
                  s = "right_bottom";
                  break;
               }
          }
        else
          s = "right";
     }
   else if (anchor & E_GADGET_SITE_ANCHOR_TOP)
     s = "top";
   else if (anchor & E_GADGET_SITE_ANCHOR_BOTTOM)
     s = "bottom";
   else
     {
        switch (orient)
          {
           case E_GADGET_SITE_ORIENT_HORIZONTAL:
             s = "horizontal";
             break;
           case E_GADGET_SITE_ORIENT_VERTICAL:
             s = "vertical";
             break;
           default: break;
          }
     }
   snprintf(buf, sizeof(buf), "e,state,orientation,%s", s);
   elm_layout_signal_emit(inst->o_button, buf, "e");
}

static void
_menu_cb_post(void *data, E_Menu *m)
{
   Instance *inst = data;
   Eina_Bool fin;

   if (stopping || (!inst->main_menu)) return;
   fin = m == inst->main_menu;
   e_object_del(E_OBJECT(m));
   if (!fin) return;
   elm_layout_signal_emit(inst->o_button, "e,state,unfocused", "e");
   inst->main_menu = NULL;
}

static void
_button_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info)
{
   Instance *inst = data;
   Evas_Event_Mouse_Down *ev = event_info;
   Evas_Coord x, y, w, h;
   E_Gadget_Site_Anchor an;
   int dir = E_MENU_POP_DIRECTION_AUTO;

   if (ev->button != 1) return;
   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return;

   evas_object_geometry_get(inst->o_button, &x, &y, &w, &h);
   if (!inst->main_menu)
     inst->main_menu = e_int_menus_main_new();
   if (!inst->main_menu) return;
   e_menu_post_deactivate_callback_set(inst->main_menu,
                                       _menu_cb_post, inst);
   an = e_gadget_site_anchor_get(e_gadget_site_get(inst->o_button));
   switch (e_gadget_site_orient_get(e_gadget_site_get(inst->o_button)))
     {
      case E_GADGET_SITE_ORIENT_HORIZONTAL:
        if (an & E_GADGET_SITE_ANCHOR_TOP)
          dir = E_MENU_POP_DIRECTION_DOWN;
        else if (an & E_GADGET_SITE_ANCHOR_BOTTOM)
          dir = E_MENU_POP_DIRECTION_UP;
        break;
      case E_GADGET_SITE_ORIENT_VERTICAL:
        if (an & E_GADGET_SITE_ANCHOR_LEFT)
          dir = E_MENU_POP_DIRECTION_RIGHT;
        else if (an & E_GADGET_SITE_ANCHOR_RIGHT)
          dir = E_MENU_POP_DIRECTION_LEFT;
        break;
      default: break;
     }
   e_menu_activate_mouse(inst->main_menu,
                         e_zone_current_get(),
                         x, y, w, h, dir, ev->timestamp);
   evas_object_smart_callback_call(inst->o_button, "gadget_popup",
     inst->main_menu->container_object);
   elm_layout_signal_emit(inst->o_button, "e,state,focused", "e");
   ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
}

static void
start_del(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Instance *inst = data;

   if (inst->main_menu)
     {
        e_menu_post_deactivate_callback_set(inst->main_menu, NULL, NULL);
        e_object_del(E_OBJECT(inst->main_menu));
     }
   free(inst);
}

static void
_anchor_change(void *data, Evas_Object *obj, void *event_info EINA_UNUSED)
{
   Instance *inst = data;

   do_orient(inst, e_gadget_site_orient_get(obj), e_gadget_site_anchor_get(obj));
}

static void
_gadget_created(void *data, Evas_Object *obj, void *event_info)
{
   Instance *inst = data;

   if (event_info == inst->o_button)
     do_orient(inst, e_gadget_site_orient_get(obj), e_gadget_site_anchor_get(obj));
}

EINTERN Evas_Object *
start_create(Evas_Object *parent, int *id, E_Gadget_Site_Orient orient)
{
   Evas_Object *o;
   Instance *inst;

   if (e_gadget_site_is_desklock(parent)) return NULL;
   if (*id == 0) *id = 1;
   inst = E_NEW(Instance, 1);

   o = elm_layout_add(parent);

   e_theme_edje_object_set(o, NULL, "e/gadget/start/main");
   elm_layout_signal_emit(o, "e,state,unfocused", "e");

   inst->o_button = o;
   evas_object_size_hint_aspect_set(o, EVAS_ASPECT_CONTROL_BOTH, 1, 1);

   evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN,
                                  _button_cb_mouse_down, inst);
   evas_object_event_callback_add(o, EVAS_CALLBACK_DEL, start_del, inst);
   evas_object_smart_callback_add(parent, "gadget_site_anchor", _anchor_change, inst);
   evas_object_smart_callback_add(parent, "gadget_created", _gadget_created, inst);
   do_orient(inst, orient, e_gadget_site_anchor_get(parent));

   return o;
}