efl/legacy/elementary/src/lib/elm_list.c

#include <Elementary.h>
#include "elm_priv.h"

typedef struct _Widget_Data Widget_Data;
typedef struct _Item Item;

struct _Widget_Data
{
   Evas_Object *scroller, *box;
   Eina_List *items;
   Eina_List *selected;
   Elementary_List_Mode mode;
   Evas_Bool on_hold : 1;
};

struct _Item
{
   Evas_Object *obj;
   Evas_Object *base;
   const char *label;
   Evas_Object *icon, *indicator, *end;
   void (*func) (void *data, Evas_Object *obj, void *event_info);
   const void *data;
   Evas_Bool even : 1;
   Evas_Bool is_even : 1;
   Evas_Bool fixed : 1;
   Evas_Bool selected : 1;
};

static void _del_hook(Evas_Object *obj);
static void _sizing_eval(Evas_Object *obj);
static void _on_focus_hook(void *data, Evas_Object *obj);

static void
_del_hook(Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   free(wd);
}

static void
_sizing_eval(Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
   
   evas_object_size_hint_min_set(obj, minw, minh);
   evas_object_size_hint_max_set(obj, maxw, maxh);
}

static void
_on_focus_hook(void *data, Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
//   if (elm_widget_focus_get(obj))
//     elm_widget_focus_steal(wd->entry);
}

static void
_mouse_down(void *data, Evas *evas, Evas_Object *obj, void *event_info)
{
   Item *it = data;
   Widget_Data *wd = elm_widget_data_get(it->obj);
   Evas_Event_Mouse_Down *ev = event_info;
   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) wd->on_hold = 1;
   else wd->on_hold = 0;
   if (ev->flags & EVAS_BUTTON_DOUBLE_CLICK)
     evas_object_smart_callback_call(it->obj, "clicked", it);
}

static void
_item_select(Item *it)
{
   const char *selectraise;
   if (it->selected) return;
   edje_object_signal_emit(it->base, "elm,state,selected", "elm");
   selectraise = edje_object_data_get(it->base, "selectraise");
   if ((selectraise) && (!strcmp(selectraise, "on")))
     evas_object_raise(it->base);
   it->selected = 1;
   if (it->func) it->func(it->data, it->obj, it);
}

static void
_item_unselect(Item *it)
{
   const char *stacking, *selectraise;
   if (!it->selected) return;
   edje_object_signal_emit(it->base, "elm,state,unselected", "elm");
   stacking = edje_object_data_get(it->base, "stacking");
   selectraise = edje_object_data_get(it->base, "selectraise");
   if ((selectraise) && (!strcmp(selectraise, "on")))
     {
        if ((stacking) && (!strcmp(stacking, "below")))
          evas_object_lower(it->base);
     }
   it->selected = 0;
}

static void
_mouse_up(void *data, Evas *evas, Evas_Object *obj, void *event_info)
{
   Item *it = data;
   Widget_Data *wd = elm_widget_data_get(it->obj);
   Evas_Event_Mouse_Up *ev = event_info;
   Eina_List *l;
   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) wd->on_hold = 1;
   else wd->on_hold = 0;
   if (wd->on_hold)
     {
        wd->on_hold = 0;
        return;
     }
   for (l = wd->items; l; l = l->next)
     {
        Item *it2 = l->data;
        if ((it2 != it) && (it2->selected)) _item_unselect(it2);
     }
   if (!it->selected) _item_select(it);
}

static Item *
_item_new(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Object *indicator, Evas_Object *end, void (*func) (void *data, Evas_Object *obj, void *event_info), const void *data)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   Item *it;
   
   it = calloc(1, sizeof(Item));
   it->obj = obj;
   it->label = eina_stringshare_add(label);
   it->icon = icon;
   it->indicator = indicator;
   it->end = end;
   it->func = func;
   it->data = data;
   it->base = edje_object_add(evas_object_evas_get(obj));
   evas_object_event_callback_add(it->base, EVAS_CALLBACK_MOUSE_DOWN,
                                  _mouse_down, it);
   evas_object_event_callback_add(it->base, EVAS_CALLBACK_MOUSE_UP,
                                  _mouse_up, it);
   evas_object_size_hint_weight_set(it->base, 1.0, 1.0);
   evas_object_size_hint_align_set(it->base, -1.0, -1.0);
   return it;
}

static void
_fix_items(Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   Eina_List *l;
   int i;
   
   for (i = 0, l = wd->items; l; l = l->next, i++)
     {
        Item *it = l->data;
        it->even = i & 0x1;
        if ((it->even != it->is_even) || (!it->fixed))
          {
             const char *stacking;
             if (it->even)
               _elm_theme_set(it->base, "list", "item", "default");
             else
               _elm_theme_set(it->base, "list", "item_odd", "default");
             stacking = edje_object_data_get(it->base, "stacking");
             if (stacking)
               {
                  if (!strcmp(stacking, "below"))
                    evas_object_lower(it->base);
                  else if (!strcmp(stacking, "above"))
                    evas_object_raise(it->base);
               }
             edje_object_part_text_set(it->base, "elm.text", it->label);
             if (!it->fixed)
               {
                  Evas_Coord minw, minh;
                   
                  edje_object_message_signal_process(it->base);
                  edje_object_size_min_calc(it->base, &minw, &minh);
                  if (wd->mode == ELM_LIST_COMPRESS) minw = 0;
                  evas_object_size_hint_min_set(it->base, minw, minh);
                  evas_object_show(it->base);
               }
             it->fixed = 1;
             it->is_even = it->even;
          }
     }
   _sizing_eval(obj);
}

EAPI Evas_Object *
elm_list_add(Evas_Object *parent)
{
   Evas_Object *obj;
   Evas *e;
   Widget_Data *wd;
   
   wd = ELM_NEW(Widget_Data);
   e = evas_object_evas_get(parent);
   obj = elm_widget_add(e);
   elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
   elm_widget_data_set(obj, wd);
   elm_widget_del_hook_set(obj, _del_hook);
   elm_widget_can_focus_set(obj, 1);
   
   wd->scroller = elm_scroller_add(parent);
   elm_widget_resize_object_set(obj, wd->scroller);
   
   wd->box = elm_box_add(parent);
   
   evas_object_size_hint_weight_set(wd->box, 1.0, 0.0);
   evas_object_size_hint_align_set(wd->box, -1.0, 0.0);
   elm_scroller_content_set(wd->scroller, wd->box);
   evas_object_show(wd->box);

   wd->mode = ELM_LIST_COMPRESS;
   
   _sizing_eval(obj);
   return obj;
}

EAPI Elm_List_Item *
elm_list_item_append(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Object *indicator, Evas_Object *end, void (*func) (void *data, Evas_Object *obj, void *event_info), const void *data)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   Item *it = _item_new(obj, label, icon, indicator, end, func, data);
   wd->items = eina_list_append(wd->items, it);
   elm_box_pack_end(wd->box, it->base);
   _fix_items(obj);
   return (Elm_List_Item *)it;
}

EAPI Elm_List_Item *
elm_list_item_prepend(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Object *indicator, Evas_Object *end, void (*func) (void *data, Evas_Object *obj, void *event_info), const void *data)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   return NULL;
}

EAPI Elm_List_Item *
elm_list_item_insert_before(Evas_Object *obj, Elm_List_Item *before, const char *label, Evas_Object *icon, Evas_Object *indicator, Evas_Object *end, void (*func) (void *data, Evas_Object *obj, void *event_info), const void *data)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   return NULL;
}

EAPI Elm_List_Item *
elm_list_item_insert_after(Evas_Object *obj, Elm_List_Item *after, const char *label, Evas_Object *icon, Evas_Object *indicator, Evas_Object *end, void (*func) (void *data, Evas_Object *obj, void *event_info), const void *data)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   return NULL;
}

EAPI void
elm_list_multi_select_set(Evas_Object *obj, Evas_Bool multi)
{
   Widget_Data *wd = elm_widget_data_get(obj);
}

EAPI void
elm_list_horizontal_mode_set(Evas_Object *obj, Elementary_List_Mode mode)
{
   Widget_Data *wd = elm_widget_data_get(obj);
}

EAPI const Elm_List_Item *
elm_list_selected_item_get(Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   return NULL;
}

EAPI const Eina_List *
elm_list_items_get(Evas_Object *obj)
{
   Widget_Data *wd = elm_widget_data_get(obj);
   return NULL;
}

EAPI void
elm_list_item_selected_set(Elm_List_Item *item, Evas_Bool selected)
{
}

EAPI void
elm_list_item_show(Elm_List_Item *item)
{
}

EAPI void
elm_list_item_del(Elm_List_Item *item)
{
}

EAPI const void *
elm_list_item_data_get(Elm_List_Item *item)
{
   return NULL;
}