elementary/els_scroller - added exception handling

if user call any other APIs (ex, elm_smart_scroller_object_theme_object_set) before elm_smart_scroller_child_set?

git-svn-id: https://svn.enlightenment.org/svn/e/trunk/elementary@57686 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

diff --git a/src/lib/els_scroller.c b/src/lib/els_scroller.c
index 4eaf479..d7328b6 100644 (file)
--- a/src/lib/els_scroller.c
+++ b/src/lib/els_scroller.c
@@ -2274,9 +2274,12 @@ _smart_scrollbar_reset(Smart_Data *sd)
        edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, 1.0);
        edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", 1.0, 1.0);
      }
-   sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
-   sd->pan_func.get(sd->pan_obj, &px, &py);
-   sd->pan_func.set(sd->pan_obj, minx, miny);
+   if (sd->pan_obj)
+     {
+        sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
+        sd->pan_func.get(sd->pan_obj, &px, &py);
+        sd->pan_func.set(sd->pan_obj, minx, miny);
+     }
    if ((px != minx) || (py != miny))
      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
 }
@@ -2285,10 +2288,11 @@ static int
 _smart_scrollbar_bar_v_visibility_adjust(Smart_Data *sd)
 {
    int scroll_v_vis_change = 0;
-   Evas_Coord h, vw, vh;
+   Evas_Coord h, vw = 0, vh = 0;
 
    h = sd->child.h;
-   evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
+   if (sd->pan_obj)
+     evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
    if (sd->vbar_visible)
      {
        if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
@@ -2353,10 +2357,11 @@ static int
 _smart_scrollbar_bar_h_visibility_adjust(Smart_Data *sd)
 {
    int scroll_h_vis_change = 0;
-   Evas_Coord w, vw, vh;
+   Evas_Coord w, vw = 0, vh = 0;
 
    w = sd->child.w;
-   evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
+   if (sd->pan_obj)
+     evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
    if (sd->hbar_visible)
      {
        if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)