org.geotools.styling
Interface StyleDelta

public interface StyleDelta

Indicates which style constructs have been changed.

Acts as a series of breadcrumbs stored up by a StyleEvent to communicate changes.

This delta is constructed a fashion following the outline of the style document, allowing you to skip over entire branches of changes if you are not interested.

Author:

Jody Garnett

Nested Class Summary

static class

StyleDelta.Kind Kind of Delta, used to indicate change.

Field Summary

static java.util.List

NO_CHILDREN List indicating no children are present

Method Summary

void	accept(StyleDeltaVisitor visitor) Accepts the given visitor.
java.lang.Object	getAffected() Affected style construct, getChildern may indicate specific details of the change.
java.util.List	getChildren() Finds and returns deltas for specificly changed constructs.
StyleDelta.Kind	getKind() Returns the kind of this delta.

Field Detail

NO_CHILDREN

public static final java.util.List NO_CHILDREN

List indicating no children are present

Method Detail

getKind

public StyleDelta.Kind getKind()

Returns the kind of this delta.

Normally, one of ADDED, REMOVED or CHANGED.

Returns:

the kind of this resource delta

See Also:

Kind.ADDED, Kind.REMOVED, Kind.CHANGED

getAffected

public java.lang.Object getAffected()

Affected style construct, getChildern may indicate specific details of the change.

Examples of style constructs (in order of abstraction):

• StyleLayerDescriptor
• NamedStyle
• FeatureTyleStyle
• Rule
• Symbolizer
• Mark

This event system will stop at the Rule level, even though changes may occur at individual Filter Exppressions.

Returns:

Style construct

getChildren

public java.util.List getChildren()

Finds and returns deltas for specificly changed constructs.

This code may be considered more accessable then the use of StyleDeltaVisitor.

Returns:

List of StyleDelta

accept

public void accept(StyleDeltaVisitor visitor)

Accepts the given visitor.

Parameters:

visitor -

Throws:

CoreException