javax.swing.text

Interface AbstractDocument.AttributeContext

public interface AbstractDocument.AttributeContext

Defines a set of methods for managing text attributes for one or more Documents. Replicating AttributeSets throughout a Document can be very expensive. Implementations of this interface are intended to provide intelligent management of AttributeSets, eliminating costly duplication.

See Also: StyleContext

Method Summary
AttributeSetaddAttribute(AttributeSet old, Object name, Object value)
Returns an AttributeSet that contains the attributes of old plus the new attribute specified by name and value.
AttributeSetaddAttributes(AttributeSet old, AttributeSet attributes)
Returns an AttributeSet that contains the attributes of old plus the new attributes in attributes.
AttributeSetgetEmptySet()
Returns an empty AttributeSet.
voidreclaim(AttributeSet attributes)
Called to indicate that the attributes in attributes are no longer used.
AttributeSetremoveAttribute(AttributeSet old, Object name)
Returns a AttributeSet that has the attribute with the specified name removed from old.
AttributeSetremoveAttributes(AttributeSet old, AttributeSet attributes)
Removes all attributes in attributes from old and returns the resulting AttributeSet.
AttributeSetremoveAttributes(AttributeSet old, Enumeration<?> names)
Removes all attributes specified by names from old and returns the resulting AttributeSet.

Method Detail

addAttribute

public AttributeSet addAttribute(AttributeSet old, Object name, Object value)
Returns an AttributeSet that contains the attributes of old plus the new attribute specified by name and value.

Parameters: old the attribute set to be merged with the new attribute name the name of the attribute to be added value the value of the attribute to be added

Returns: the old attributes plus the new attribute

addAttributes

public AttributeSet addAttributes(AttributeSet old, AttributeSet attributes)
Returns an AttributeSet that contains the attributes of old plus the new attributes in attributes.

Parameters: old the set of attributes where to add the new attributes attributes the attributes to be added

Returns: an AttributeSet that contains the attributes of old plus the new attributes in attributes

getEmptySet

public AttributeSet getEmptySet()
Returns an empty AttributeSet.

Returns: an empty AttributeSet

reclaim

public void reclaim(AttributeSet attributes)
Called to indicate that the attributes in attributes are no longer used.

Parameters: attributes the attributes are no longer used

removeAttribute

public AttributeSet removeAttribute(AttributeSet old, Object name)
Returns a AttributeSet that has the attribute with the specified name removed from old.

Parameters: old the attribute set from which an attribute is removed name the name of the attribute to be removed

Returns: the attributes of old minus the attribute specified by name

removeAttributes

public AttributeSet removeAttributes(AttributeSet old, AttributeSet attributes)
Removes all attributes in attributes from old and returns the resulting AttributeSet.

Parameters: old the set of attributes from which to remove attributes attributes the attributes to be removed from old

Returns: the attributes of old minus the attributes in attributes

removeAttributes

public AttributeSet removeAttributes(AttributeSet old, Enumeration<?> names)
Removes all attributes specified by names from old and returns the resulting AttributeSet.

Parameters: old the set of attributes from which to remove attributes names the names of the attributes to be removed from old

Returns: the attributes of old minus the attributes in attributes