forked from enlightenment/efl
elm_dnd: null check for safety
Also, it needs to keep backward compatibility. Reviewed-by: Christopher Michael <devilhorns@comcast.net> Differential Revision: https://phab.enlightenment.org/D11666
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@ -163,6 +163,7 @@ elm_drop_target_add(Evas_Object *obj, Elm_Sel_Format format,
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Elm_Drag_Pos pos_cb, void *pos_data,
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Elm_Drop_Cb drop_cb, void *drop_data)
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{
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EINA_SAFETY_ON_NULL_RETURN_VAL(obj, EINA_FALSE);
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Elm_Drop_Target *target = calloc(1, sizeof(Elm_Drop_Target));
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target->enter_cb = enter_cb;
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@ -195,6 +196,8 @@ elm_drop_target_del(Evas_Object *obj, Elm_Sel_Format format,
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Elm_Drop_Target *target;
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Eina_List *n, *found = NULL;
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EINA_SAFETY_ON_NULL_RETURN_VAL(obj, EINA_FALSE);
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if (!target_register)
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return EINA_TRUE;
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Eina_List *targets = eina_hash_find(target_register, &obj);
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@ -769,6 +772,12 @@ elm_drag_start(Evas_Object *obj, Elm_Sel_Format format,
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Elm_Drag_Data *dd;
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const char *str_action;
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EINA_SAFETY_ON_NULL_RETURN_VAL(obj, EINA_FALSE);
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//it should return EINA_TRUE to keep backward compatibility
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if (!data)
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return EINA_TRUE;
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str_action = _action_to_string(action);
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dd = calloc(1, sizeof(Elm_Drag_Data));
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dd->dragposcb = dragpos;
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