fdda.model
Interface PropertyHolder

All Known Subinterfaces:

Connection, Line, Node, Node

All Known Implementing Classes:

Connection, Line, Node, Node, WorkingPart

public interface PropertyHolder

A part of the model that holds properties.

Author:

Jörg Rüdenauer

See Also:

Property

Method Summary

void	addProperty(Property property) Adds a property to the holder.
void	addPropertyListener(PropertyListener listener) Adds a PropertyListener (Observer pattern).
void	changeProperty(Property property) Changes a property of the holder - i.e., replaces the property with the name of the parameter property with the parameter.
void	firePropertyChanged(Property property) Informs the listeners that a property has been changed.
Iterator	getProperties() Returns an Iterator over the properties of the holder.
Property	getProperty(String name) Returns a property of the holder.
void	removeProperty(Property property) Removes a property from the holder.
void	removePropertyListener(PropertyListener listener) Removes a PropertyListener (Observer pattern).

Method Detail

getProperties

public Iterator getProperties()

Returns an Iterator over the properties of the holder.

Returns:

an Iterator over the properties

getProperty

public Property getProperty(String name)

Returns a property of the holder. If no property with the specified name exists, null is returned.

Parameters:

name - the name of the property

Returns:

the property

addProperty

public void addProperty(Property property)

Adds a property to the holder. If a property with the same name already exists, it is removed.

removeProperty

public void removeProperty(Property property)

Removes a property from the holder. The key for removal is the name of the property; if no property with that name exists, nothing happens.

Parameters:

property - the property to be removed, must not be null

changeProperty

public void changeProperty(Property property)

Changes a property of the holder - i.e., replaces the property with the name of the parameter property with the parameter. If no such property exists, the property is simply added to the holder; in this case, a propertyAdded event instead of a propertyChanged event is fired.

Parameters:

property - the new property, must not be null

addPropertyListener

public void addPropertyListener(PropertyListener listener)

Adds a PropertyListener (Observer pattern).

Parameters:

listener - the listener to be added

See Also:

EventListenerList

removePropertyListener

public void removePropertyListener(PropertyListener listener)

Removes a PropertyListener (Observer pattern).

Parameters:

listener - the listener to be removed

See Also:

EventListenerList

firePropertyChanged

public void firePropertyChanged(Property property)

Informs the listeners that a property has been changed. Note that the property holder can't determine by himself whether a property is changed internally; therefore, the property must inform its holder of any changes. This method must only be called by implementing classes of either PropertyHolder or Property.

Parameters:

property - the property that was changed.