Eclipse Plug-in Developer Guide (Galileo) - ResourceRegistry (Eclipse Platform API Specification)

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Eclipse Platform
Release 3.5

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org.eclipse.jface.resource
Class ResourceRegistry


java.lang.Object
  

org.eclipse.core.commands.common.EventManager
      
org.eclipse.jface.resource.ResourceRegistry

Direct Known Subclasses:: ColorRegistry, FontRegistry

public abstract class ResourceRegistry
extends EventManager
extends EventManager

Abstract base class for various JFace registries.

Since:: 3.0

Constructor Summary

ResourceRegistry ()


Method Summary

void addListener ( IPropertyChangeListener listener)
          Adds a property change listener to this registry.

protected abstract void clearCaches ()
          Disposes all currently allocated resources.

protected void fireMappingChanged ( String name, Object oldValue, Object newValue)
          Fires a PropertyChangeEvent.

abstract Set getKeySet ()


abstract boolean hasValueFor ( String key)
          Return whether or not the receiver has a value for the supplied key.

void removeListener ( IPropertyChangeListener listener)
          Removes the given listener from this registry.

Methods inherited from class org.eclipse.core.commands.common. EventManager

addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject

Methods inherited from class java.lang. Object

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

Constructor Detail

ResourceRegistry

public ResourceRegistry()

Method Detail

addListener

public void addListener(
IPropertyChangeListener listener)

Adds a property change listener to this registry.

Parameters:: listener - a property change listener

clearCaches

protected abstract void clearCaches()

Disposes all currently allocated resources.

getKeySet

public abstract 
Set getKeySet()

Returns:: the set of keys this manager knows about. This collection should be immutable.

hasValueFor

public abstract boolean hasValueFor(
String key)

Return whether or not the receiver has a value for the supplied key.

Parameters:: key - the key
Returns:: true if there is a value for this key

fireMappingChanged

protected void fireMappingChanged(
String name,
                                  
Object oldValue,
                                  
Object newValue)

Fires a PropertyChangeEvent.

Parameters:: name - the name of the symbolic value that is changing.; oldValue - the old value.; newValue - the new value.

removeListener

public void removeListener(
IPropertyChangeListener listener)

Removes the given listener from this registry. Has no affect if the listener is not registered.

Parameters:: listener - a property change listener