org.geotools.event
Class AbstractGTComponent

java.lang.Object
  org.geotools.event.AbstractGTComponent

All Implemented Interfaces:

GTComponent

Direct Known Subclasses:

AbstractGTRoot, AnchorPointImpl, ChannelSelectionImpl, ColorMapEntryImpl, ColorMapImpl, ContrastEnhancementImpl, DisplacementImpl, ExtentImpl, ExternalGraphicImpl, FeatureTypeConstraintImpl, FeatureTypeStyleImpl, FillImpl, FontImpl, GraphicImpl, HaloImpl, ImageOutlineImpl, LayerFeatureConstraintsImpl, LinePlacementImpl, LineSymbolizerImpl, MarkImpl, NamedStyleImpl, PointPlacementImpl, PointSymbolizerImpl, PolygonSymbolizerImpl, RasterSymbolizerImpl, RemoteOWSImpl, RuleImpl, SelectedChannelTypeImpl, ShadedReliefImpl, StrokeImpl, StyledLayerImpl, StyleImpl, TextSymbolizerImpl

public abstract class AbstractGTComponent

extends java.lang.Object

implements GTComponent

Provides basic StyleEvent notification, may be used in conjuction with StyleList during event handling.

This class has package scope to prevent user code mistaking it for something important. It is only used to assist in the construction of this one implementation of StyleEvents. Basically this is NOT API :-)

Since:

2.2.M3

Field Summary

protected GTNote

notification

Constructor Summary

AbstractGTComponent()

Method Summary

void	changed(GTDelta childDelta) Used to pass on "We changed" notification from children.
protected java.lang.Object	clone()
protected void	fireChanged() Simple notification that we changed.
protected void	fireChildChanged(java.lang.String name, java.lang.Object child, java.lang.Object oldValue) Create a child delta and send it off.
GTNote	getNote()
GTComponent	getParent() Used to locate our parent.
void	removed(GTDelta childDelta) Used to pass on "something is about to change" notification from children.
void	setNote(GTNote container)

Methods inherited from class java.lang.Object

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

Field Detail

notification

protected GTNote notification

Constructor Detail

AbstractGTComponent

public AbstractGTComponent()

Method Detail

clone

protected java.lang.Object clone()
                          throws java.lang.CloneNotSupportedException

Throws:

java.lang.CloneNotSupportedException

removed

public void removed(GTDelta childDelta)

Used to pass on "something is about to change" notification from children.

Specified by:

removed in interface GTComponent

Parameters:

childDelta - object containing change information

changed

public void changed(GTDelta childDelta)

Used to pass on "We changed" notification from children.

Specified by:

changed in interface GTComponent

Parameters:

childDelta - object containing change information

fireChanged

protected void fireChanged()

Simple notification that we changed.

Change will be passed on to parent.changed( delta ).

fireChildChanged

protected void fireChildChanged(java.lang.String name,
                                java.lang.Object child,
                                java.lang.Object oldValue)

Create a child delta and send it off.

Use this for changes to simple types like int and Color.

Parameters:

child -

oldValue - DOCUMENT ME!

getParent

public GTComponent getParent()

Description copied from interface: GTComponent

Used to locate our parent.

This method will return a "NULLObject", called GTRoot.NO_PARENT when no parent is present, client code should never have to be concerned this method return null.

Specified by:

getParent in interface GTComponent

Returns:

Parent GTComponent or GTRoot.NO_PARENT if none

getNote

public GTNote getNote()

Specified by:

getNote in interface GTComponent

setNote

public void setNote(GTNote container)

Specified by:

setNote in interface GTComponent