boolean function ( ) { return mScroll < mMaxScroll ; }
check if can scroll up to show bottom concode_field_sep int mHeight concode_elem_sep int mMinHegiht concode_elem_sep boolean mIsInTouch concode_elem_sep int mMaxScroll concode_elem_sep float mResistance concode_elem_sep float mOverDistance concode_elem_sep int mMinScroll concode_elem_sep int mMaxHegiht concode_elem_sep float mScroll concode_field_sep boolean canScrollDown concode_elem_sep int getMaxScroll concode_elem_sep int move concode_elem_sep int getMinScroll concode_elem_sep int getCurPosition concode_elem_sep boolean isOverHeight concode_elem_sep int getHeight concode_elem_sep float getMovePercentage concode_elem_sep void setSize concode_elem_sep int getMinHeight concode_elem_sep boolean isInTouch concode_elem_sep boolean needSendRefresh concode_elem_sep int getMaxHeight concode_elem_sep int getScroll