MATLAB Object-Oriented Programming

Emp123 =

handle to deleted EmployeeInfo

Implementation

The EmployeeInfo class overrides three matlab.mixin.CustomDisplay methods to

implement the display shown:

• getHeader


• getPropertyGroups


• getFooter

Each method must produce the desired results with each of the following inputs:

• Scalar object


• Nonscalar object array


• Empty object array

getHeader Method Override

MATLAB calls getHeader to get the header text. The EmployeeInfo class overrides this

method to implement the custom header for scalar display. Here is how it works:

• Nonscalar (including empty object) arrays call the superclass getHeader, which
  returns the default header.


• Scalar handles to deleted objects do not result in a call to getHeader.


• Scalar inputs build a custom header using the getClassNameForHeader static
  method to return linked class name text, and the value of the Department property.

Here is the EmployeeInfo override of the getHeader method. The required protected

access is inherited from the superclass.

methods (Access = protected)

function header = getHeader(obj)

if ~isscalar(obj)

header = [email protected](obj);

else

className = matlab.mixin.CustomDisplay.getClassNameForHeader(obj);

newHeader = [className,' Dept: ',obj.Department];

header = sprintf('%s\n',newHeader);

end

18 Customizing Object Display