UnityEditor.SceneView.HandleClickAndDragToFocus C# (CSharp) Method

        private void HandleClickAndDragToFocus()
        {
            Event current = Event.current;
            if ((current.type == EventType.MouseDown) || (current.type == EventType.MouseDrag))
            {
                s_LastActiveSceneView = this;
            }
            else if (s_LastActiveSceneView == null)
            {
                s_LastActiveSceneView = this;
            }
            if (current.type == EventType.MouseDrag)
            {
                this.draggingLocked = DraggingLockedState.Dragging;
            }
            else if ((GUIUtility.hotControl == 0) && (this.draggingLocked == DraggingLockedState.Dragging))
            {
                this.draggingLocked = DraggingLockedState.LookAt;
            }
            if (current.type == EventType.MouseDown)
            {
                Tools.s_ButtonDown = current.button;
                if ((current.button == 1) && (Application.platform == RuntimePlatform.OSXEditor))
                {
                    base.Focus();
                }
            }
        }