Elm_Panel: forbid changing of content of "elm.swallow.event" part

Summary:
Because the "elm.swallow.event" part is used for internal needs of Panel widget
setting up or unsetting content of this part can break the behavior of this widget.
Due to the fact that this part is invisible and does not have any use cases for user
it seems acceptable to forbid changing of its content.

@fix

Reviewers: cedric, seoz, raster, Hermet

Reviewed By: Hermet

Subscribers: reutskiy.v.v

Differential Revision: https://phab.enlightenment.org/D1587

1 files changed, 28 insertions, 11 deletions

diff --git a/src/lib/elm_panel.c b/src/lib/elm_panel.c
index 65e778a56..c8621b5fa 100644
--- a/src/lib/elm_panel.c
+++ b/src/lib/elm_panel.c
@@ -861,11 +861,17 @@ _elm_panel_elm_widget_event(Eo *obj, Elm_Panel_Data *_pd EINA_UNUSED, Evas_Objec
 EOLIAN static Eina_Bool
 _elm_panel_elm_container_content_set(Eo *obj, Elm_Panel_Data *sd, const char *part, Evas_Object *content)
 {
-   if (part && strcmp(part, "default"))
+   if (part)
      {
-        Eina_Bool int_ret = EINA_TRUE;
-        eo_do_super(obj, MY_CLASS, int_ret = elm_obj_container_content_set(part, content));
-        return int_ret;
+        // "elm.swallow.event" part is used for internal needs and should not be changed.
+        if (!strcmp(part, "elm.swallow.event")) return EINA_FALSE;
+        if (strcmp(part, "default"))
+          {
+             Eina_Bool int_ret = EINA_TRUE;
+             eo_do_super(obj, MY_CLASS,
+                         int_ret = elm_obj_container_content_set(part, content));
+             return int_ret;
+          }
      }
 
    if (sd->content == content) return EINA_TRUE;
@@ -886,11 +892,16 @@ _elm_panel_elm_container_content_set(Eo *obj, Elm_Panel_Data *sd, const char *pa
 EOLIAN static Evas_Object*
 _elm_panel_elm_container_content_get(Eo *obj, Elm_Panel_Data *sd, const char *part)
 {
-   if (part && strcmp(part, "default"))
+   if (part)
      {
-        Evas_Object *ret = NULL;
-        eo_do_super(obj, MY_CLASS, ret = elm_obj_container_content_get(part));
-        return ret;
+        // "elm.swallow.event" part is used for internal needs and should not be changed.
+        if (!strcmp(part, "elm.swallow.event")) return NULL;
+        if (strcmp(part, "default"))
+          {
+             Evas_Object *ret = NULL;
+             eo_do_super(obj, MY_CLASS, ret = elm_obj_container_content_get(part));
+             return ret;
+          }
      }
 
    return sd->content;
@@ -901,10 +912,16 @@ _elm_panel_elm_container_content_unset(Eo *obj, Elm_Panel_Data *sd, const char *
 {
    Evas_Object *ret = NULL;
 
-   if (part && strcmp(part, "default"))
+   if (part)
      {
-        eo_do_super(obj, MY_CLASS, ret = elm_obj_container_content_unset(part));
-        return ret;
+        // "elm.swallow.event" part is used for internal needs and should not be changed.
+        if (!strcmp(part, "elm.swallow.event")) return NULL;
+        if (strcmp(part, "default"))
+          {
+             eo_do_super(obj, MY_CLASS,
+                         ret = elm_obj_container_content_unset(part));
+             return ret;
+          }
      }
 
    if (!sd->content) return NULL;