little refactoring and code simplification
little refactoring and code simplification

Change-Id: I41c7507d668eb0853b97c24217ff04f7dd4acd40

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core