UnityEngine.UI.Selectable.OnPointerDown C# (CSharp) Method

        public virtual void OnPointerDown(PointerEventData eventData)
        {
            if (eventData.button == PointerEventData.InputButton.Left)
            {
                if (this.IsInteractable() && (this.navigation.mode != Navigation.Mode.None))
                {
                    EventSystem.current.SetSelectedGameObject(base.gameObject, eventData);
                }
                this.isPointerDown = true;
                this.EvaluateAndTransitionToSelectionState(eventData);
            }
        }

 static public int OnPointerDown(IntPtr l)
 {
     try {
                     #if DEBUG
         var    method     = System.Reflection.MethodBase.GetCurrentMethod();
         string methodName = GetMethodName(method);
                     #if UNITY_5_5_OR_NEWER
         UnityEngine.Profiling.Profiler.BeginSample(methodName);
                     #else
         Profiler.BeginSample(methodName);
                     #endif
                     #endif
         UnityEngine.UI.Selectable self = (UnityEngine.UI.Selectable)checkSelf(l);
         UnityEngine.EventSystems.PointerEventData a1;
         checkType(l, 2, out a1);
         self.OnPointerDown(a1);
         pushValue(l, true);
         return(1);
     }
     catch (Exception e) {
         return(error(l, e));
     }
             #if DEBUG
     finally {
                     #if UNITY_5_5_OR_NEWER
         UnityEngine.Profiling.Profiler.EndSample();
                     #else
         Profiler.EndSample();
                     #endif
     }
             #endif
 }