MATLAB Object-Oriented Programming

end

end

When you create a PropertyGroup object using a cell array of property names, MATLAB

automatically

• Adds the property values for a scalar object display


• Uses the property names without values for a nonscalar object display (including
  empty object arrays)

The getPropertyGroups method is not called to create the display for a scalar handle

to a deleted object.

Change the Values Displayed for Properties

Given the same class properties used in the previous section, you can change the value

displayed for properties by building the property list as a struct and specifying values

for property names. This override of the getPropertyGroups method uses the default

property display for nonscalar objects by calling the superclass getPropertyGroups

method. For scalar objects, the override:

• Changes the value displayed for the Password property to a '*' character for each
  character in the password.


• Displays the text 'Not Available' for the Salary property.
  methods (Access = protected)
  function propgrp = getPropertyGroups(obj)
  if ~isscalar(obj)
  propgrp = [email protected](obj);
  else
  pd(1:length(obj.Password)) = '*';
  propList = struct('Department',obj.Department,...
  'JobTitle',obj.JobTitle,...
  'Name',obj.Name,...
  'Salary','Not available',...
  'Password',pd);
  propgrp = matlab.mixin.util.PropertyGroup(propList);
  end
  end
  end

The object display looks like this:

EmployeeInfo with properties:

Department: 'Product Development'

18 Customizing Object Display