com.threerings.expr
Class SimpleScope

java.lang.Object
  com.threerings.expr.SimpleScope

All Implemented Interfaces:

Scope, ScopeUpdateListener

Direct Known Subclasses:

ActorSprite.Implementation, Animation, Animation.Implementation, AreaCursor.Implementation, AreaSprite.Implementation, Articulated.Node, BaseParticleSystem.Layer, Cursor, EffectSprite.Implementation, GlobalSprite.Implementation, Model.Implementation, PathCursor.Implementation, PathSprite.Implementation, PlaceableCursor.Implementation, PlaceableSprite.Implementation, RenderEffect.Target, Sounder, Sounder.Implementation, Sprite, Surface, TileCursor.Implementation, TileSprite.Implementation

public abstract class SimpleScope
extends Object
implements Scope, ScopeUpdateListener

A base class for objects providing simple scopes.

Field Summary

Fields inherited from interface com.threerings.expr.Scope

EPOCH, NOW

Constructor Summary

SimpleScope(Scope parentScope)
Creates a new simple scope.

Method Summary

void	addListener(ScopeUpdateListener listener) Adds a listener for changes in scope.
void	dispose() Releases the resources associated with this scope.
<T> T	get(String name, Class<T> clazz) Looks up a symbol in this scope.
Scope	getParentScope() Returns a reference to the parent scope, or null if this is the top level.
String	getScopeName() Returns the name of this scope for purposes of qualification.
void	removeListener(ScopeUpdateListener listener) Removes a listener for changes in scope.
void	scopeUpdated(ScopeEvent event) Called when the scope has been updated.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleScope

public SimpleScope(Scope parentScope)

Creates a new simple scope.

Method Detail

dispose

public void dispose()

Releases the resources associated with this scope.

getScopeName

public String getScopeName()

Description copied from interface: Scope

Returns the name of this scope for purposes of qualification. Can return null if qualified symbols cannot specifically address this scope.

Specified by:

getScopeName in interface Scope

getParentScope

public Scope getParentScope()

Description copied from interface: Scope

Returns a reference to the parent scope, or null if this is the top level.

Specified by:

getParentScope in interface Scope

get

public <T> T get(String name,
                 Class<T> clazz)

Description copied from interface: Scope

Looks up a symbol in this scope.

Specified by:

get in interface Scope

Returns:

the mapping for the requested symbol, or null if not found.

addListener

public void addListener(ScopeUpdateListener listener)

Description copied from interface: Scope

Adds a listener for changes in scope. The listener will be notified when symbols are added or removed and whenever the scope hierarchy changes.

Specified by:

addListener in interface Scope

removeListener

public void removeListener(ScopeUpdateListener listener)

Description copied from interface: Scope

Removes a listener for changes in scope.

Specified by:

removeListener in interface Scope

scopeUpdated

public void scopeUpdated(ScopeEvent event)

Description copied from interface: ScopeUpdateListener

Called when the scope has been updated.

Specified by:

scopeUpdated in interface ScopeUpdateListener