| Package | com.yworks.graph.model |
| Class | public class DefaultItemLookup |
| Inheritance | DefaultItemLookup  Object |
| Implements | ILookup, IContextLookup, IContextLookupChainLink |
| Subclasses | DefaultBendLookup, DefaultColumnLookup, DefaultEdgeLookup, DefaultLabelLookup, DefaultNodeLookup, DefaultPortLookup, DefaultRowLookup, DefaultStripeLookup |
ILookup implementation
that also implements IContextLookupChainLink and
IContextLookup.
Subclass implementers should override itemLookup() only.
| Property | Defined By | ||
|---|---|---|---|
| item : IModelItem [read-only]
Gets the context item. | DefaultItemLookup | ||
| Method | Defined By | ||
|---|---|---|---|
DefaultItemLookup(item:IModelItem = null)
Creates an instance using the given context item. | DefaultItemLookup | ||
lookup(type:Class):Object
Returns an instance that implements the given type or null. | DefaultItemLookup | ||
lookupForItem(item:Object, type:Class):Object
Tries to create or retrieve an implementation of the given type
for a given item. | DefaultItemLookup | ||
setItem(item:IModelItem):void
Sets the context item. | DefaultItemLookup | ||
setNext(next:IContextLookup):void
This method is called by the framework to register the fallback lookup implementation
that should be used during a call to IContextLookup.lookup(). | DefaultItemLookup | ||
| Method | Defined By | ||
|---|---|---|---|
Subclasses need to override this method. | DefaultItemLookup | ||
| item | property |
item:IModelItem [read-only] Gets the context item.
protected function get item():IModelItem| DefaultItemLookup | () | Constructor |
public function DefaultItemLookup(item:IModelItem = null)Creates an instance using the given context item.
Parametersitem:IModelItem (default = null) |
| itemLookup | () | method |
protected function itemLookup(item:IModelItem, type:Class, nextLookup:ILookup, lastLookup:ILookup):ObjectSubclasses need to override this method.
Parameters
item:IModelItem — The context item to lookup an implementation for.
| |
type:Class — The type of the implementation to find.
| |
nextLookup:ILookup — The lookup to use for another type.
| |
lastLookup:ILookup — The lookup to use as a fallback for the type.
|
Object — An implementation of type or null.
|
| lookup | () | method |
public function lookup(type:Class):Object
Returns an instance that implements the given type or null.
This implementation delegates to itemLookup(), unless
the context item is null in which case it will return null.
Parameters
type:Class |
Object |
| lookupForItem | () | method |
public function lookupForItem(item:Object, type:Class):ObjectTries to create or retrieve an implementation of the given type for a given item.
Parameters
item:Object — the item to lookup a type for
| |
type:Class — the type to look up
|
Object — an implementation or null
|
| setItem | () | method |
| setNext | () | method |
public function setNext(next:IContextLookup):void
This method is called by the framework to register the fallback lookup implementation
that should be used during a call to IContextLookup.lookup().
If the implementation cannot satisfy the query, it will use the provided context as a fallback. Note that implementations can also use the results returned by the next lookup and decorate it appropriately.
Parameters
next:IContextLookup — The context to use as a fallback.
|