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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class StyleContext.NamedStyle - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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javax.swing.text
Class StyleContext.NamedStyle

java.lang.Object
  |
  +--javax.swing.text.StyleContext.NamedStyle

Enclosing class:

StyleContext

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public class StyleContext.NamedStyle

extends Object

implements Style, Serializable

A collection of attributes, typically used to represent character and paragraph styles. This is an implementation of MutableAttributeSet that can be observed if desired. These styles will take advantage of immutability while the sets are small enough, and may be substantially more efficient than something like SimpleAttributeSet.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. A future release of Swing will provide support for long term persistence.

See Also:

Serialized Form

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Inner classes inherited from class javax.swing.text.AttributeSet

AttributeSet.CharacterAttribute, AttributeSet.ColorAttribute, AttributeSet.FontAttribute, AttributeSet.ParagraphAttribute

 

Field Summary
protected  ChangeEvent	changeEvent           Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property.
protected  EventListenerList	listenerList           The change listeners for the model.

 

Fields inherited from interface javax.swing.text.AttributeSet

NameAttribute, ResolveAttribute

 

Constructor Summary

StyleContext.NamedStyle()           Creates a new named style, with a null name and parent.

StyleContext.NamedStyle(String name, Style parent)           Creates a new named style.

StyleContext.NamedStyle(Style parent)           Creates a new named style.

 

Method Summary
void	addAttribute(Object name, Object value)           Adds an attribute.
void	addAttributes(AttributeSet attr)           Adds a set of attributes to the element.
void	addChangeListener(ChangeListener l)           Adds a change listener.
boolean	containsAttribute(Object name, Object value)           Checks whether a given attribute name/value is defined.
boolean	containsAttributes(AttributeSet attrs)           Checks whether the element contains all the attributes.
AttributeSet	copyAttributes()           Copies a set of attributes.
protected  void	fireStateChanged()           Notifies all listeners that have registered interest for notification on this event type.
Object	getAttribute(Object attrName)           Gets the value of an attribute.
int	getAttributeCount()           Gets the number of attributes that are defined.
Enumeration	getAttributeNames()           Gets the names of all attributes.
String	getName()           Fetches the name of the style.
AttributeSet	getResolveParent()           Gets attributes from the parent.
boolean	isDefined(Object attrName)           Checks whether a given attribute is defined.
boolean	isEqual(AttributeSet attr)           Checks whether two attribute sets are equal.
void	removeAttribute(Object name)           Removes an attribute from the set.
void	removeAttributes(AttributeSet attrs)           Removes a set of attributes for the element.
void	removeAttributes(Enumeration names)           Removes a set of attributes for the element.
void	removeChangeListener(ChangeListener l)           Removes a change listener.
void	setName(String name)           Changes the name of the style.
void	setResolveParent(AttributeSet parent)           Sets the resolving parent.
String	toString()           Converts the style to a string.

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

listenerList

protected EventListenerList listenerList

The change listeners for the model.

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changeEvent

protected transient ChangeEvent changeEvent

Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

Constructor Detail

StyleContext.NamedStyle

public StyleContext.NamedStyle(String name,
                               Style parent)

Creates a new named style.

Parameters:

name - the style name, null for unnamed

parent - the parent style, null if none

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StyleContext.NamedStyle

public StyleContext.NamedStyle(Style parent)

Creates a new named style.

Parameters:

parent - the parent style, null if none

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StyleContext.NamedStyle

public StyleContext.NamedStyle()

Creates a new named style, with a null name and parent.

Method Detail

toString

public String toString()

Converts the style to a string.

Overrides:

toString in class Object

Returns:

the string

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getName

public String getName()

Fetches the name of the style. A style is not required to be named, so null is returned if there is no name associated with the style.

Specified by:

getName in interface Style

Returns:

the name

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setName

public void setName(String name)

Changes the name of the style. Does nothing with a null name.

Parameters:

name - the new name

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addChangeListener

public void addChangeListener(ChangeListener l)

Adds a change listener.

Specified by:

addChangeListener in interface Style

Parameters:

l - the change listener

See Also:

Attributes#addChangeListener

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removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a change listener.

Specified by:

removeChangeListener in interface Style

Parameters:

l - the change listener

See Also:

Attributes#removeChangeListener

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fireStateChanged

protected void fireStateChanged()

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the parameters passed into the fire method.

See Also:

EventListenerList

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getAttributeCount

public int getAttributeCount()

Gets the number of attributes that are defined.

Returns:

the number of attributes >= 0

See Also:

AttributeSet.getAttributeCount()

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isDefined

public boolean isDefined(Object attrName)

Checks whether a given attribute is defined.

Parameters:

attrName - the non-null attribute name

Returns:

true if the attribute is defined

See Also:

AttributeSet.isDefined(java.lang.Object)

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isEqual

public boolean isEqual(AttributeSet attr)

Checks whether two attribute sets are equal.

Parameters:

attr - the attribute set to check against

Returns:

true if the same

See Also:

AttributeSet.isEqual(javax.swing.text.AttributeSet)

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copyAttributes

public AttributeSet copyAttributes()

Copies a set of attributes.

Returns:

the copy

See Also:

AttributeSet.copyAttributes()

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getAttribute

public Object getAttribute(Object attrName)

Gets the value of an attribute.

Parameters:

attrName - the non-null attribute name

Returns:

the attribute value

See Also:

AttributeSet.getAttribute(java.lang.Object)

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getAttributeNames

public Enumeration getAttributeNames()

Gets the names of all attributes.

Returns:

the attribute names as an enumeration

See Also:

AttributeSet.getAttributeNames()

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containsAttribute

public boolean containsAttribute(Object name,
                                 Object value)

Checks whether a given attribute name/value is defined.

Parameters:

name - the non-null attribute name

value - the attribute value

Returns:

true if the name/value is defined

See Also:

AttributeSet.containsAttribute(java.lang.Object, java.lang.Object)

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containsAttributes

public boolean containsAttributes(AttributeSet attrs)

Checks whether the element contains all the attributes.

Parameters:

attrs - the attributes to check

Returns:

true if the element contains all the attributes

See Also:

AttributeSet.containsAttributes(javax.swing.text.AttributeSet)

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getResolveParent

public AttributeSet getResolveParent()

Gets attributes from the parent. If not overriden, the resolving parent defaults to the parent element.

Returns:

the attributes from the parent

See Also:

AttributeSet.getResolveParent()

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addAttribute

public void addAttribute(Object name,
                         Object value)

Adds an attribute.

Parameters:

name - the non-null attribute name

value - the attribute value

See Also:

MutableAttributeSet.addAttribute(java.lang.Object, java.lang.Object)

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addAttributes

public void addAttributes(AttributeSet attr)

Adds a set of attributes to the element.

Parameters:

attr - the attributes to add

See Also:

MutableAttributeSet.addAttribute(java.lang.Object, java.lang.Object)

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removeAttribute

public void removeAttribute(Object name)

Removes an attribute from the set.

Parameters:

name - the non-null attribute name

See Also:

MutableAttributeSet.removeAttribute(java.lang.Object)

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removeAttributes

public void removeAttributes(Enumeration names)

Removes a set of attributes for the element.

Parameters:

names - the attribute names

See Also:

MutableAttributeSet.removeAttributes(java.util.Enumeration)

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removeAttributes

public void removeAttributes(AttributeSet attrs)

Removes a set of attributes for the element.

Parameters:

attrs - the attributes

See Also:

MutableAttributeSet.removeAttributes(java.util.Enumeration)

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setResolveParent

public void setResolveParent(AttributeSet parent)

Sets the resolving parent.

Parameters:

parent - the parent, null if none

See Also:

MutableAttributeSet.setResolveParent(javax.swing.text.AttributeSet)

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