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Java 2 Platform SE v1.3.1: Interface AbstractDocument.AttributeContext
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javax.swing.text
Interface AbstractDocument.AttributeContext

All Known Implementing Classes:
StyleContext
Enclosing class:
AbstractDocument
public static interface AbstractDocument.AttributeContext

An interface that can be used to allow MutableAttributeSet implementations to use pluggable attribute compression techniques. Each mutation of the attribute set can be used to exchange a previous AttributeSet instance with another, preserving the possibility of the AttributeSet remaining immutable. An implementation is provided by the StyleContext class. The Element implementations provided by this class use this interface to provide their MutableAttributeSet implementations, so that different AttributeSet compression techniques can be employed. The method getAttributeContext should be implemented to return the object responsible for implementing the desired compression technique.

See Also:
StyleContext

Method Summary
 AttributeSet addAttribute(AttributeSet old, Object name, Object value)
          Adds an attribute to the given set, and returns the new representative set.
 AttributeSet addAttributes(AttributeSet old, AttributeSet attr)
          Adds a set of attributes to the element.
 AttributeSet getEmptySet()
          Fetches an empty AttributeSet.
 void reclaim(AttributeSet a)
          Reclaims an attribute set.
 AttributeSet removeAttribute(AttributeSet old, Object name)
          Removes an attribute from the set.
 AttributeSet removeAttributes(AttributeSet old, AttributeSet attrs)
          Removes a set of attributes for the element.
 AttributeSet removeAttributes(AttributeSet old, Enumeration names)
          Removes a set of attributes for the element.
 

Method Detail

addAttribute

public AttributeSet addAttribute(AttributeSet old,
                                 Object name,
                                 Object value)
Adds an attribute to the given set, and returns the new representative set.
Parameters:
old - the old attribute set
name - the non-null attribute name
value - the attribute value
Returns:
the updated attribute set
See Also:
MutableAttributeSet.addAttribute(java.lang.Object, java.lang.Object)

addAttributes

public AttributeSet addAttributes(AttributeSet old,
                                  AttributeSet attr)
Adds a set of attributes to the element.
Parameters:
old - the old attribute set
attr - the attributes to add
Returns:
the updated attribute set
See Also:
MutableAttributeSet.addAttribute(java.lang.Object, java.lang.Object)

removeAttribute

public AttributeSet removeAttribute(AttributeSet old,
                                    Object name)
Removes an attribute from the set.
Parameters:
old - the old attribute set
name - the non-null attribute name
Returns:
the updated attribute set
See Also:
MutableAttributeSet.removeAttribute(java.lang.Object)

removeAttributes

public AttributeSet removeAttributes(AttributeSet old,
                                     Enumeration names)
Removes a set of attributes for the element.
Parameters:
old - the old attribute set
names - the attribute names
Returns:
the updated attribute set
See Also:
MutableAttributeSet.removeAttributes(java.util.Enumeration)

removeAttributes

public AttributeSet removeAttributes(AttributeSet old,
                                     AttributeSet attrs)
Removes a set of attributes for the element.
Parameters:
old - the old attribute set
attrs - the attributes
Returns:
the updated attribute set
See Also:
MutableAttributeSet.removeAttributes(java.util.Enumeration)

getEmptySet

public AttributeSet getEmptySet()
Fetches an empty AttributeSet.
Returns:
the attribute set

reclaim

public void reclaim(AttributeSet a)
Reclaims an attribute set. This is a way for a MutableAttributeSet to mark that it no longer need a particular immutable set. This is only necessary in 1.1 where there are no weak references. A 1.1 implementation would call this in its finalize method.
Parameters:
a - the attribute set to reclaim
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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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