Class StyleContext

public static final String DEFAULT_STYLE

The name of the default style.

Field Value:

"default"

public StyleContext()

Creates a new instance of the style context. Add the default style to the style table.

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.

Specified by:

addAttribute in interface AbstractDocument.AttributeContext

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

public AttributeSet addAttributes(AttributeSet old,
                                  AttributeSet attributes)

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

Specified by:

addAttributes in interface AbstractDocument.AttributeContext

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

public void addChangeListener(ChangeListener listener)

public Style addStyle(String name,
                      Style parent)

protected MutableAttributeSet createLargeAttributeSet(AttributeSet a)

protected StyleContext.SmallAttributeSet createSmallAttributeSet(AttributeSet a)

public Color getBackground(AttributeSet a)

public ChangeListener[] getChangeListeners()

protected int getCompressionThreshold()

public static StyleContext getDefaultStyleContext()

public AttributeSet getEmptySet()

Returns an empty AttributeSet.

Specified by:

getEmptySet in interface AbstractDocument.AttributeContext

Returns:

an empty AttributeSet

public Font getFont(String family,
                    int style,
                    int size)

public Font getFont(AttributeSet attr)

public FontMetrics getFontMetrics(Font f)

public Color getForeground(AttributeSet a)

public static Object getStaticAttribute(Object key)

Gets the object previously registered with registerStaticAttributeKey.

Parameters:

key - - the key that was registered.

Returns:

the object previously registered with registerStaticAttributeKey.

public static Object getStaticAttributeKey(Object key)

Returns the String that key will be registered with registerStaticAttributeKey.

Parameters:

key - - the key that will be registered.

Returns:

the string the key will be registered with.

public Style getStyle(String name)

Get the style from the style table. If the passed name matches DEFAULT_STYLE, returns the default style. Otherwise returns the previously defined style of null if the style with the given name is not defined.

Parameters:

name - the name of the style.

Returns:

the style with the given name or null if no such defined.

public Enumeration getStyleNames()

Get the names of the style. The returned enumeration always contains at least one member, the default style.

public static void readAttributeSet(ObjectInputStream in,
                                    MutableAttributeSet a)
            throws ClassNotFoundException,
                   IOException

Reads a set of attributes from the given object input stream. This will attempt to restore keys that were static objects by considering only the keys that have were registered with registerStaticAttributeKey. The attributes retrieved will be placed into the given set.

Parameters:

in - - the stream to read from

a - - the set of attributes

Throws:

ClassNotFoundException - - may be encountered when reading from stream

IOException - - any I/O error

public void readAttributes(ObjectInputStream in,
                           MutableAttributeSet a)
            throws ClassNotFoundException,
                   IOException

Handles reading in the attributes.

Parameters:

in - - the stream to read from

a - - the set of attributes

Throws:

ClassNotFoundException - - may be encountered when reading from stream

IOException - - any I/O error

See Also:

readAttributeSet(ObjectInputStream,MutableAttributeSet)

public void reclaim(AttributeSet attributes)

Called to indicate that the attributes in attributes are no longer used.

Specified by:

reclaim in interface AbstractDocument.AttributeContext

Parameters:

attributes - the attributes are no longer used

public static void registerStaticAttributeKey(Object key)

Registers an attribute key as a well-known keys. When an attribute with such a key is written to a stream, a special syntax is used so that it can be recognized when it is read back in. All attribute keys defined in StyleContext are registered as static keys. If you define additional attribute keys that you want to exist as nonreplicated objects, then you should register them using this method.

Parameters:

key - the key to register as static attribute key

public AttributeSet removeAttribute(AttributeSet old,
                                    Object name)

Returns a AttributeSet that has the attribute with the specified name removed from old.

Specified by:

removeAttribute in interface AbstractDocument.AttributeContext

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

public AttributeSet removeAttributes(AttributeSet old,
                                     Enumeration names)

Removes all attributes specified by names from old and returns the resulting AttributeSet.

Specified by:

removeAttributes in interface AbstractDocument.AttributeContext

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

public AttributeSet removeAttributes(AttributeSet old,
                                     AttributeSet attributes)

Removes all attributes in attributes from old and returns the resulting AttributeSet.

Specified by:

removeAttributes in interface AbstractDocument.AttributeContext

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

public void removeChangeListener(ChangeListener listener)

public void removeStyle(String name)

public String toString()

Returns a string representation of this StyleContext.

Overrides:

toString in interface Object

Returns:

a string representation of this StyleContext

public static void writeAttributeSet(ObjectOutputStream out,
                                     AttributeSet a)
            throws IOException

Serialize an attribute set in a way that is compatible with it being read in again by readAttributeSet(ObjectInputStream,MutableAttributeSet). In particular registered static keys are transformed properly.

Parameters:

out - - stream to write to

a - - the attribute set

Throws:

IOException - - any I/O error

public void writeAttributes(ObjectOutputStream out,
                            AttributeSet a)
            throws IOException

Handles writing of the given attributes.

Parameters:

out - - stream to write to

a - - the attribute set

Throws:

IOException - - any I/O error

See Also:

writeAttributeSet(ObjectOutputStream,AttributeSet)