A collection of unique attributes. This is a read-only,
immutable interface. An attribute is basically a key and
a value assigned to the key. The collection may represent
something like a style run, a logical style, etc. These
are generally used to describe features that will contribute
to some graphical representation such as a font. The
set of possible keys is unbounded and can be anything.
Typically View implementations will respond to attribute
definitions and render something to represent the attributes.
Attributes can potentially resolve in a hierarchy. If a
key doesn't resolve locally, and a resolving parent
exists, the key will be resolved through the parent.
Attribute name used to name the collection of
attributes.
Attribute name used to identify the resolving parent
set of attributes, if one is defined.
Returns true if this set contains this attribute with an equal value.
Returns true if this set contains all the attributes with equal values.
Returns an attribute set that is guaranteed not
to change over time.
Fetches the value of the given attribute. If the value is not found
locally, the search is continued upward through the resolving
parent (if one exists) until the value is either
found or there are no more parents. If the value is not found,
null is returned.
Returns the number of attributes contained in this set.
Returns an enumeration over the names of the attributes in the set.
The values of the Enumeration may be anything
and are not constrained to a particular Object type.
The set does not include the resolving parent, if one is defined.
Gets the resolving parent.
Checks whether the named attribute has a value specified in
the set without resolving through another attribute
set.
Determines if the two attribute sets are equivalent.