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java.lang.Objectjavax.swing.text.SimpleAttributeSet
public class SimpleAttributeSet
A set of attributes.
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from interface javax.swing.text.AttributeSet |
|---|
AttributeSet.CharacterAttribute, AttributeSet.ColorAttribute, AttributeSet.FontAttribute, AttributeSet.ParagraphAttribute |
| Field Summary | |
|---|---|
static AttributeSet |
EMPTY
An empty attribute set. |
| Fields inherited from interface javax.swing.text.AttributeSet |
|---|
NameAttribute, ResolveAttribute |
| Constructor Summary | |
|---|---|
SimpleAttributeSet()
Creates a new attribute set that is initially empty. |
|
SimpleAttributeSet(AttributeSet a)
Creates a new SimpleAttributeSet with the same attributes
and resolve parent as the specified set. |
|
| Method Summary | |
|---|---|
void |
addAttribute(Object name,
Object value)
Adds an attribute with the given name and value
to the set. |
void |
addAttributes(AttributeSet attributes)
Adds all the attributes from attributes to this set. |
Object |
clone()
Returns a clone of the attribute set. |
boolean |
containsAttribute(Object name,
Object value)
Returns true if the given name and value represent an attribute found either in this AttributeSet or in its resolve parent hierarchy. |
boolean |
containsAttributes(AttributeSet attributes)
Returns true of this AttributeSet contains all
of the specified attributes. |
AttributeSet |
copyAttributes()
Creates and returns a copy of this AttributeSet. |
boolean |
equals(Object obj)
Checks this set for equality with an arbitrary object. |
Object |
getAttribute(Object name)
Returns the value of the specified attribute, or null if
there is no attribute with that name. |
int |
getAttributeCount()
Returns the number of attributes stored in this set, plus 1 if a parent has been specified (the reference to the parent is stored as a special attribute). |
Enumeration<?> |
getAttributeNames()
Returns an enumeration of the attribute names. |
AttributeSet |
getResolveParent()
Returns the resolving parent. |
int |
hashCode()
Returns a hash code for this instance. |
boolean |
isDefined(Object attrName)
Returns true if the given attribute is defined in this set,
and false otherwise. |
boolean |
isEmpty()
Returns true if the set contains no attributes, and
false otherwise. |
boolean |
isEqual(AttributeSet attr)
Returns true if the given set has the same number of attributes as this set and containsAttributes(attr) returns
true. |
void |
removeAttribute(Object name)
Removes the attribute with the specified name, if this
attribute is defined. |
void |
removeAttributes(AttributeSet attributes)
Removes attributes from this set if they are found in the given set. |
void |
removeAttributes(Enumeration<?> names)
Removes the attributes listed in names. |
void |
setResolveParent(AttributeSet parent)
Sets the reolving parent for this set. |
String |
toString()
Returns a string representation of this instance, typically used for debugging purposes. |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
public static final AttributeSet EMPTY
| Constructor Detail |
|---|
public SimpleAttributeSet()
public SimpleAttributeSet(AttributeSet a)
SimpleAttributeSet with the same attributes
and resolve parent as the specified set.
a - the attributes (null not permitted).
NullPointerException - if a is null.| Method Detail |
|---|
public void addAttribute(Object name,
Object value)
name and value
to the set. If the set already contains an attribute with the given
name, the attribute value is updated.
addAttribute in interface MutableAttributeSetname - the attribute name (null not permitted).value - the value (null not permitted).
NullPointerException - if either argument is null.public void addAttributes(AttributeSet attributes)
attributes to this set.
addAttributes in interface MutableAttributeSetattributes - the set of attributes to add (null not
permitted).
NullPointerException - if attributes is
null.public Object clone()
clone in class ObjectCloneable
public boolean containsAttribute(Object name,
Object value)
containsAttribute in interface AttributeSetname - the key for the attributevalue - the value for the attribute
public boolean containsAttributes(AttributeSet attributes)
true of this AttributeSet contains all
of the specified attributes.
containsAttributes in interface AttributeSetattributes - the requested attributes
true of this AttributeSet contains all
of the specified attributespublic AttributeSet copyAttributes()
AttributeSet.
copyAttributes in interface AttributeSetAttributeSetpublic boolean equals(Object obj)
equals in class Objectobj - the object (null permitted).
true if this set is equal to obj, and
false otherwise.Object.hashCode()public Object getAttribute(Object name)
null if
there is no attribute with that name. If the attribute is not defined
directly in this set, the parent hierarchy (if there is one) will be
used.
getAttribute in interface AttributeSetname - the attribute (null not permitted).
key or
null if no such attribute is defined in this
AttributeSet and its resolving parents
NullPointerException - if name is null.public int getAttributeCount()
getAttributeCount in interface AttributeSetpublic Enumeration<?> getAttributeNames()
getAttributeNames in interface AttributeSetpublic AttributeSet getResolveParent()
getResolveParent in interface AttributeSetnull).setResolveParent(AttributeSet)public int hashCode()
hashCode in class ObjectObject.equals(Object),
System.identityHashCode(Object)public boolean isDefined(Object attrName)
true if the given attribute is defined in this set,
and false otherwise. The parent attribute set is not
checked.
isDefined in interface AttributeSetattrName - the attribute name (null not permitted).
true if an attribute with the specified name is
defined locally in this AttributeSetpublic boolean isEmpty()
true if the set contains no attributes, and
false otherwise. Note that the resolving parent is
stored as an attribute, so this method will return false if
a resolving parent is set.
true if the set contains no attributes, and
false otherwise.public boolean isEqual(AttributeSet attr)
containsAttributes(attr) returns
true.
isEqual in interface AttributeSetattr - the attribute set (null not permitted).
NullPointerException - if attr is null.public void removeAttribute(Object name)
name, if this
attribute is defined. This method will only remove an attribute from
this set, not from the resolving parent.
removeAttribute in interface MutableAttributeSetname - the attribute name (null not permitted).
NullPointerException - if name is null.public void removeAttributes(AttributeSet attributes)
attributes has the same resolving parent as this set, the
parent will be removed from this set.
removeAttributes in interface MutableAttributeSetattributes - the attributes (null not permitted).public void removeAttributes(Enumeration<?> names)
names.
removeAttributes in interface MutableAttributeSetnames - the attribute names (null not permitted).
NullPointerException - if names is null
or contains any null values.public void setResolveParent(AttributeSet parent)
Note that the parent is stored as an attribute, and will contribute 1 to
the count returned by getAttributeCount().
setResolveParent in interface MutableAttributeSetparent - the parent attribute set (null not permitted).
NullPointerException - if parent is null.setResolveParent(AttributeSet)public String toString()
toString in class ObjectObject.getClass(),
Object.hashCode(),
Class.getName(),
Integer.toHexString(int)
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