Elc_Naviframe: When push is in progress, block pop until push is complete.

Summary:
When push is in progress, block popping until
push is complete to allow animation to complete.

@fix

Reviewers: Hermet

Subscribers: subodh6129, shashank0990

Differential Revision: https://phab.enlightenment.org/D2966

Conflicts:

	src/lib/elm_naviframe.eo

3 files changed, 11 insertions, 2 deletions

diff --git a/src/lib/elc_naviframe.c b/src/lib/elc_naviframe.c
index 797916184..4eab3c9a8 100644
--- a/src/lib/elc_naviframe.c
+++ b/src/lib/elc_naviframe.c
@@ -1141,6 +1141,8 @@ _on_item_show_finished(void *data,
    if (sd->freeze_events)
      evas_object_freeze_events_set(VIEW(it), EINA_FALSE);
 
+   it->pushing = EINA_FALSE;
+
    eo_do(WIDGET(it), eo_event_callback_call(ELM_NAVIFRAME_EVENT_TRANSITION_FINISHED, EO_OBJ(it)));
 }
 
@@ -1539,6 +1541,7 @@ _item_push_helper(Elm_Naviframe_Item_Data *item)
 
         sd->ops = eina_list_append(sd->ops, nfo);
         if (!sd->animator) sd->animator = ecore_animator_add(_deferred, sd);
+        item->pushing = EINA_TRUE;
      }
    else
      {
@@ -1683,7 +1686,7 @@ _elm_naviframe_item_pop(Eo *obj, Elm_Naviframe_Data *sd)
 
    ELM_NAVIFRAME_ITEM_DATA_GET(eo_item, it);
 
-   if (it->popping) return NULL;
+   if (it->pushing || it->popping) return NULL;
    it->popping = EINA_TRUE;
 
    evas_object_ref(obj);
diff --git a/src/lib/elm_naviframe.eo b/src/lib/elm_naviframe.eo
index aa7ab0708..33ead03ba 100644
--- a/src/lib/elm_naviframe.eo
+++ b/src/lib/elm_naviframe.eo
@@ -132,6 +132,9 @@ class Elm.Naviframe (Elm.Layout, Elm_Interface_Atspi_Widget_Action)
          disappear, then deletes the item. The item that was underneath it on the
          stack will become visible.
 
+         When pop transition animation is in progress, new pop operation is blocked until current pop operation
+         is complete.
+
          @see also elm_naviframe_content_preserve_on_pop_get()
          @see also elm_naviframe_item_pop_cb_set()
 
@@ -182,13 +185,15 @@ class Elm.Naviframe (Elm.Layout, Elm_Interface_Atspi_Widget_Action)
          The item pushed becomes one page of the naviframe, this item will be
          deleted when it is popped.
 
+         When push transition animation is in progress, pop operation is blocked until push is complete.
+
          @see also elm_naviframe_item_style_set()
          @see also elm_naviframe_item_insert_before()
          @see also elm_naviframe_item_insert_after()
 
          The following styles are available for this item:
          @li @c "default"
-
+           
          @ingroup Naviframe */
 
          return: Elm_Object_Item *;
diff --git a/src/lib/elm_widget_naviframe.h b/src/lib/elm_widget_naviframe.h
index ef199e7a7..0bc526473 100644
--- a/src/lib/elm_widget_naviframe.h
+++ b/src/lib/elm_widget_naviframe.h
@@ -63,6 +63,7 @@ struct _Elm_Naviframe_Item_Data
    Evas_Coord   minh;
 
    Eina_Bool    title_enabled : 1;
+   Eina_Bool    pushing : 1; /**< a flag to notify the item is on pushing. This flag is set true at the start of item push. */
    Eina_Bool    popping : 1; /**< a flag to notify the item is on poping. this flag is set true at the start of item pop. */
    Eina_Bool    delete_me : 1; /**< a flag to notify the item is on deletion. this flag is set true at the start of item deletion. */
 };