Add in some safety checks.

experimental/ecdb/trunk/src/ecdb_widgets.c

@@ -57,6 +57,12 @@ ecdb_widget_add(Evas_Object *parent, const char *name)
    int x, y, w, h;
 
    o = edje_object_add(evas_object_evas_get(parent));
+   if (!o)
+   {
+      printf("ecdb_widget_add: NULL return!\n");
+      return NULL;
+   }
+
    edje_object_signal_callback_add(o, "mouse,down,*", "*",
                                                 _mouse_down_edje,
                                                 (void *)name);
@@ -88,9 +94,15 @@ ecdb_button_add(Evas_Object *parent, const char *name)
    Evas_Object *b;
 
    b = ecdb_widget_add(parent, name);
+   if (!b)
+   {
+      printf("ecdb_button_add: NULL return!\n");
+      return NULL;
+   }
+
    edje_object_file_set(b, em->theme_path, "ecdb/button");
-   edje_object_signal_callback_add(b, "clicked", "ecdb",
+   edje_object_signal_callback_add(b, "clicked", "ecdb", _button_click_cb_call,
-                                                      _button_click_cb_call, b);
+                                                         b);
 
    return b;
 }
@@ -98,6 +110,11 @@ ecdb_button_add(Evas_Object *parent, const char *name)
 void
 ecdb_button_label_set(Evas_Object *b, const char *label)
 {
+   if (!b)
+   {
+      printf("ecdb_button_label_set: NULL object!\n");
+      return;
+   }
    edje_object_part_text_set(b, "ecdb.label", label);
 }
 
@@ -106,7 +123,18 @@ ecdb_button_icon_set(Evas_Object *b, const char *group)
 {
    Evas_Object *icon;
 
+   if (!b)
+   {
+      printf("ecdb_button_icon_set: NULL object!\n");
+      return;
+   }
+
    icon = ecdb_widget_add(b, "ecdb.swallow.icon");
+   if (!icon)
+   {
+      printf("ecdb_button_icon_set: NULL icon!\n");
+      return;
+   }
    edje_object_file_set(icon, em->theme_path, group);
    evas_object_show(icon);
 }
@@ -114,6 +142,11 @@ ecdb_button_icon_set(Evas_Object *b, const char *group)
 const char *
 ecdb_button_label_get(Evas_Object *b)
 {
+   if (!b)
+   {
+      printf("ecdb_button_label_get: NULL object!\n");
+      return NULL;
+   }
    return edje_object_part_text_get(b, "ecdb.label");
 }
 
@@ -131,6 +164,11 @@ ecdb_combo_item_add(Evas_Object *parent, const char *name)
    Evas_Object *ci;
 
    ci = ecdb_widget_add(parent, name);
+   if (!ci)
+   {
+      printf("ecdb_combo_item_add: NULL return!\n");
+      return NULL;
+   }
    edje_object_file_set(ci, em->theme_path, "ecdb/combo_item");
    edje_object_signal_callback_add(ci, "clicked", "ecdb",
                                                 _combo_item_click_cb_call, ci);
@@ -141,6 +179,11 @@ ecdb_combo_item_add(Evas_Object *parent, const char *name)
 void
 ecdb_combo_item_label_set(Evas_Object *ci, const char *label)
 {
+   if (!ci)
+   {
+      printf("ecdb_combo_label_set: NULL ci!\n");
+      return;
+   }
    edje_object_part_text_set(ci, "ecdb.label", label);
 }
 
@@ -149,7 +192,18 @@ ecdb_combo_item_icon_set(Evas_Object *ci, const char *group)
 {
    Evas_Object *icon;
 
+   if (!ci)
+   {
+      printf("ecdb_combo_item_icon_set: NULL object!\n");
+      return;
+   }
+
    icon = ecdb_widget_add(ci, "ecdb.swallow.icon");
+   if (!icon)
+   {
+      printf("ecdb_combo_item_icon_set: NULL icon!\n");
+      return;
+   }
    edje_object_file_set(icon, em->theme_path, group);
    evas_object_show(icon);
 }
@@ -167,6 +221,7 @@ struct _Check_Data
 {
    unsigned int checked;
 };
+
 static void
 _check_del(void *data, Evas *e, Evas_Object *obj, void *event_info)
 {
@@ -201,12 +256,23 @@ ecdb_check_add(Evas_Object *parent, const char *name)
    Check_Data *cd;
 
    c = ecdb_widget_add(parent, name);
+   if (!c)
+   {
+      printf("ecdb_check_add: NULL return!\n");
+      return NULL;
+   }
+
    edje_object_file_set(c, em->theme_path, "ecdb/check");
    edje_object_signal_callback_add(c, "ecdb,check,*", "ecdb",
                                     _check_toggle_cb_call, c);
    evas_object_event_callback_add(c, EVAS_CALLBACK_DEL, _check_del, c);
 
    cd = calloc(1, sizeof(Check_Data));
+   if (!cd)
+   {
+      printf("ecdb_check_add: NULL data!\n");
+      return NULL;
+   }
    evas_object_data_set(c, "cd", cd);
 
    return c;
@@ -215,12 +281,24 @@ ecdb_check_add(Evas_Object *parent, const char *name)
 void
 ecdb_check_label_set(Evas_Object *c, const char *label)
 {
+   if (!c)
+   {
+      printf("ecdb_check_label_set: NULL object!\n");
+      return;
+   }
+
    edje_object_part_text_set(c, "ecdb.label", label);
 }
 
 void
 ecdb_check_states_set(Evas_Object *c, const char *ystate, const char *nstate)
 {
+   if (!c)
+   {
+      printf("ecdb_check_states_set: NULL object!\n");
+      return;
+   }
+
    edje_object_part_text_set(c, "ecdb.ystate", ystate);
    edje_object_part_text_set(c, "ecdb.nstate", nstate);
 }
@@ -230,7 +308,19 @@ ecdb_check_checked_set(Evas_Object *c, int state)
 {
    Check_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_check_checked_set: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_check_checked_set: NULL data!\n");
+      return;
+   }
+
    if (state)
    {
       cd->checked = 1;
@@ -248,7 +338,18 @@ ecdb_check_checked_get(Evas_Object *c)
 {
    Check_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_check_checked_get: NULL object!\n");
+      return 0;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_check_checked_get: NULL data!\n");
+      return 0;
+   }
 
    return cd->checked;
 }
@@ -427,6 +528,11 @@ ecdb_entry_add(Evas_Object *parent, const char *name)
    Evas_Object *e;
 
    e = ecdb_widget_add(parent, name);
+   if (!e)
+   {
+      printf("ecdb_entry_add: NULL return!\n");
+      return NULL;
+   }
    edje_object_file_set(e, em->theme_path, "ecdb/entry");
    em->evas_dnd_candidates = eina_list_append(em->evas_dnd_candidates, e);
    evas_object_data_set(e, "dnd_call_func", ecdb_dnd_entry_dnd_set);
@@ -559,6 +665,12 @@ _combo_clicked(void *data, Evas_Object *obj, void *event_info)
 
    it = evas_object_box_iterator_new(edje_object_part_object_get(cd->popup,
                                                                "ecdb.box"));
+   if (!it)
+   {
+      printf("_combo_clicked: NULL iterator!\n");
+      return;
+   }
+
    while (eina_iterator_next(it, (void **)&swallow))
    {
       if (swallow == obj)
@@ -623,6 +735,12 @@ ecdb_combo_add(Evas_Object *parent, const char *name)
    Combo_Data *cd;
 
    c = ecdb_widget_add(parent, name);
+
+   if (!c)
+   {
+      printf("ecdb_combo_add: NULL return!\n");
+      return NULL;
+   }
    edje_object_file_set(c, em->theme_path, "ecdb/combo");
    evas_object_event_callback_add(parent, EVAS_CALLBACK_RESIZE, _combo_resize,
                                                                            c);
@@ -632,6 +750,11 @@ ecdb_combo_add(Evas_Object *parent, const char *name)
                                                       _combo_click_cb, c);
 
    cd = calloc(1, sizeof(Combo_Data));
+   if (!cd)
+   {
+      printf("ecdb_combo_add: NULL data!\n");
+      return NULL;
+   }
 
    cd->back = edje_object_add(evas_object_evas_get(parent));
    edje_object_file_set(cd->back, em->theme_path, "ecdb/combo/background");
@@ -662,7 +785,19 @@ ecdb_combo_header_set(Evas_Object *c, const char *text)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_header_set: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_header_set: NULL data!\n");
+      return;
+   }
+
    edje_object_part_text_set(c, "ecdb.header", text);
    eina_stringshare_del(cd->header);
    cd->header = eina_stringshare_add(text);
@@ -673,7 +808,18 @@ ecdb_combo_append(Evas_Object *c, Evas_Object *o)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_append: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_append: NULL data!\n");
+      return;
+   }
    cd->count++;
    edje_object_part_box_append(cd->popup, "ecdb.box", o);
    evas_object_smart_callback_add(o, "clicked", _combo_clicked, c);
@@ -691,9 +837,20 @@ ecdb_combo_expand(Evas_Object *c)
    char buf[1024];
    int x, y, w, h, h2, padding;
 
-   cd = evas_object_data_get(c, "cd");
+   if (!c)
+   {
+      printf("ecdb_combo_expand: NULL object!\n");
+      return;
+   }
 
-   if (cd->count == 0)
+   cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_expand: NULL data!\n");
+      return;
+   }
+
+   if ((cd->count == 0) || (cd->expanded))
       return;
 
    edje_object_signal_emit(c, "ecdb,combo,active", "ecdb");
@@ -715,6 +872,12 @@ ecdb_combo_expand(Evas_Object *c)
 
    it = evas_object_box_iterator_new(edje_object_part_object_get(cd->popup,
                                                                "ecdb.box"));
+   if (!it)
+   {
+      printf("ecdb_combo_expand: NULL iterator!\n");
+      return;
+   }
+
    while (eina_iterator_next(it, (void **)&o))
    {
       min_size = edje_object_data_get(o, "ecdb/combo_item/minh");
@@ -756,7 +919,18 @@ ecdb_combo_collapse(Evas_Object *c)
    if ((!em) || (!em->main_win_ee))
       return;
 
+   if (!c)
+   {
+      printf("ecdb_combo_collapse: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_collapse: NULL data!\n");
+      return;
+   }
 
    edje_object_signal_emit(cd->back, "ecdb,combo,back,hide", "ecdb");
    evas_object_pass_events_set(cd->back, 1);
@@ -769,6 +943,12 @@ ecdb_combo_collapse(Evas_Object *c)
 
    it = evas_object_box_iterator_new(edje_object_part_object_get(cd->popup,
                                                                "ecdb.box"));
+   if (!it)
+   {
+      printf("ecdb_combo_collapse: NULL iterator!\n");
+      return;
+   }
+
    while ((eina_iterator_next(it, (void **)&o)))
       evas_object_smart_callback_call(o, "hidden", c);
    eina_iterator_free(it);
@@ -783,7 +963,19 @@ ecdb_combo_header_create_set(Evas_Object *c, void (*func)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_header_create_set: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_header_create_set: NULL data!\n");
+      return;
+   }
+
    cd->create_header = func;
 }
 
@@ -792,7 +984,18 @@ ecdb_combo_selected_get(Evas_Object *c)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_selected_get: NULL object!\n");
+      return -1;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_selected_get: NULL data!\n");
+      return -1;
+   }
 
    return cd->selected;
 }
@@ -802,7 +1005,18 @@ ecdb_combo_data_set(Evas_Object *c, void *data)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_data_set: NULL object!\n");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
+   if (!cd)
+   {
+      printf("ecdb_combo_data_set: NULL data!\n");
+      return;
+   }
    cd->data = data;
 }
 
@@ -811,6 +1025,12 @@ ecdb_combo_clear(Evas_Object *c)
 {
    Combo_Data *cd;
 
+   if (!c)
+   {
+      printf("ecdb_combo_clear: NULL object!");
+      return;
+   }
+
    cd = evas_object_data_get(c, "cd");
    edje_object_part_box_remove_all(cd->popup, "ecdb.box", 1);
    cd->selected = 1;
@@ -825,6 +1045,11 @@ ecdb_label_add(Evas_Object *parent, const char *name)
    Evas_Object *l;
 
    l = ecdb_widget_add(parent, name);
+   if (!l)
+   {
+      printf("ecdb_label_add: NULL return!\n");
+      return NULL;
+   }
    edje_object_file_set(l, em->theme_path, "ecdb/label");
 
    return l;
@@ -833,6 +1058,11 @@ ecdb_label_add(Evas_Object *parent, const char *name)
 void
 ecdb_label_text_set(Evas_Object *l, const char *text)
 {
+   if (!l)
+   {
+      printf("ecdb_label_text_set: NULL object!\n");
+      return;
+   }
    edje_object_part_text_set(l, "ecdb.label", text);
 }
 
@@ -843,6 +1073,11 @@ ecdb_config_inwin_add(Evas_Object *parent, const char *name)
    Evas_Object *iw;
 
    iw = ecdb_widget_add(parent, name);
+   if (!iw)
+   {
+      printf("ecdb_config_inwin_add: NULL return!\n");
+      return NULL;
+   }
    edje_object_file_set(iw, em->theme_path, "ecdb/config_inwin");
 
    /*