Type Application = class

public
	Function Create();
	Function Init();

public
	Property Workbooks read ReadWorkbooks; // Completed
	Function ReadWorkbooks(index);

private
	workbooks_;

End;

// ============== 实现 ================= //
Function Application.Create();
Begin
	Init();
End;

Function Application.Init();
Begin
	workbooks_ := new Workbooks();
End;

Function Application.ReadWorkbooks(index)
Begin
	if ifnil(index) then return workbooks_;
	return workbooks_[index];
End;