Summary:
elm_gengrid_item_update perform item_unrealize/item_realize/item_place itself.
But when gengrid items are added and not calculated yet,
caller want to get item's index after execute elm_gengrid_item_update,
return value is wrong because item_place update it's position in not-updated item's x and y.
to prevent this,
if item position is already updated,
do not updates position in item place.
additionally,
I fixed gengrid item prepend wrong posiiton update.
gengrid item position start from 1 not 0, so item_position_update also must be started from 1.
@fix
Test Plan:
To test this scenario,
need to fix src/bin/test_gengrid.c first.
1. add below codes in bottom of _after_bt_clicked(line 703).
```
Elm_Object_Item *it = elm_gengrid_item_next_get(id->item);
printf("before update efl item[%p], index [%d]\n",id->item,elm_gengrid_item_index_get(it));
elm_gengrid_item_update(it);
printf("after update efl item[%p], index [%d]\n",id->item,elm_gengrid_item_index_get(it));
```
2. execute elementary_test and go to gengrid2 test.
3. add 3 items and select 2nd item then add new item by insert after.
4. you can see index is changed wrong value after item_update executed.
after add fallback code in item_update,
index is returned same value even after item_update execusion.
Reviewers: raster, Hermet, seoz, jaehwan
Subscribers: anand.km, eagleeye, singh.amitesh
Differential Revision: https://phab.enlightenment.org/D2616
Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>