MATLAB Object-Oriented Programming

Method Purpose Default

getFooter Create the text used for the footer. There are two footers:

• Simple display — Returns an
  empty char vector


• Detailed display — Returns linked
  calls to methods, events, and
  superclasses for this class

Object States That Affect Display

There are four object states that affect how MATLAB displays objects:

• Valid scalar object


• Nonscalar object array


• Empty object array


• Scalar handle to a deleted object

State Handler Methods

Each object state has an associated method that MATLAB calls whenever displaying

objects that are in that particular state.

State Handler Method Called for Object in This State

displayScalarObject (isa(obj,'handle') && isvalid(obj))
&& prod(size(obj)) == 1

displayNonScalarObject prod(size(obj)) > 1

displayEmptyObject prod(size(obj)) == 0

displayScalarHandleToDeletedObject isa(obj,'handle') && isscalar(obj) &&
~isvalid(obj)

Utility Methods

The CustomDisplay class provides utility methods that return strings that are used in

various parts of the different display options. These static methods return text that

simplifies the creation of customized object displays.

If the computer display does not support hypertext linking, the strings are returned

without the links.

Custom Display Interface