Package org.web3d.vrml.scripting.external.sai

Class SAIExternProtoDeclaration

java.lang.Object

org.web3d.vrml.scripting.external.sai.SAIExternProtoDeclaration

All Implemented Interfaces:

X3DExternProtoDeclaration, X3DProtoDeclaration

public class SAIExternProtoDeclaration
extends Object
implements X3DExternProtoDeclaration

Wrapper class for external PROTO declaration data.

Constructor Summary

Constructors

Constructor	Description
SAIExternProtoDeclaration(SAINodeFactory factory, VRMLExternProtoDeclare externProto, BasicScene scene)

Method Summary

Modifier and Type	Method	Description
X3DProtoInstance	createInstance()	Create an instance of this proto that may be used at runtime.
void	dispose()	Dispose of this node's resources.
X3DFieldDefinition[]	getFieldDefinitions()	Get the list of fields that this node contains.
int	getLoadState()	Check to see if the underlying definition has been loaded yet.
int[]	getNodeType()	Fetch the type of this proto.
String	getProtoName()	Get the type of this node.
String[]	getURLs()	Get the URLs used to describe this external prototype.
void	loadNow()	Ask the browser to load the definition now.

Methods inherited from class java.lang.Object

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

Constructor Details

SAIExternProtoDeclaration

public SAIExternProtoDeclaration(SAINodeFactory factory,
 VRMLExternProtoDeclare externProto,
 BasicScene scene)

Method Details

getLoadState

public int getLoadState()

Description copied from interface: X3DExternProtoDeclaration

Check to see if the underlying definition has been loaded yet. There are 4 load states - not loaded, in-progress, failed and complete. If an externproto is never used in the containing scene then the browser may never even attempt to load it. This is the not-loaded state. A user may force the browser to load the definition through the loadNow() method later on.

Specified by:

getLoadState in interface X3DExternProtoDeclaration

Returns:

The current load state

See Also:

• X3DExternProtoDeclaration.getLoadState()

loadNow

public void loadNow()

Description copied from interface: X3DExternProtoDeclaration

Ask the browser to load the definition now. If the load state is already in progress, failed or completed, then this request will be ignored.

Specified by:

loadNow in interface X3DExternProtoDeclaration

See Also:

• X3DExternProtoDeclaration.loadNow()

getURLs

public String[] getURLs()

Description copied from interface: X3DExternProtoDeclaration

Get the URLs used to describe this external prototype. If no URLs are defined in the file, this will return null.

Specified by:

getURLs in interface X3DExternProtoDeclaration

Returns:

The URLs used to describe this node's contents

See Also:

• X3DExternProtoDeclaration.getURLs()

getProtoName

public String getProtoName()
                    throws InvalidNodeException

Description copied from interface: X3DProtoDeclaration

Get the type of this node. The string returned should be the name of the VRML node or the name of the proto instance this node represents.

Specified by:

getProtoName in interface X3DProtoDeclaration

Returns:

The type of this node.

Throws:

InvalidNodeException - The node has had it's resources disposed of

See Also:

• X3DProtoDeclaration.getProtoName()

getNodeType

public int[] getNodeType()
                  throws InvalidNodeException

Description copied from interface: X3DProtoDeclaration

Fetch the type of this proto. The proto's type is defined by the first child node in the body, in accordance with the X3D specification.

The types values are provided in the array of values. There is no specific order of the returned types. It is expected that most node types, which only descend from a single parent type would return an array of length 1.

Specified by:

getNodeType in interface X3DProtoDeclaration

Returns:

The primary type(s) of this node

Throws:

InvalidNodeException - The node has had it's resources disposed of

See Also:

• X3DProtoDeclaration.getNodeType()

getFieldDefinitions

public X3DFieldDefinition[] getFieldDefinitions()
                                         throws InvalidNodeException

Description copied from interface: X3DProtoDeclaration

Get the list of fields that this node contains. This will return one definition for each field regardless of whether it is eventIn/Out, exposedField or field access type.

Specified by:

getFieldDefinitions in interface X3DProtoDeclaration

Returns:

The definitions for all fields of this node

Throws:

InvalidNodeException - The node has had it's resources disposed of

See Also:

• X3DProtoDeclaration.getFieldDefinitions()

createInstance

public X3DProtoInstance createInstance()
                                throws InvalidNodeException

Description copied from interface: X3DProtoDeclaration

Create an instance of this proto that may be used at runtime.

Specified by:

createInstance in interface X3DProtoDeclaration

Returns:

An instance of this proto to work with

Throws:

InvalidNodeException - The node has had it's resources disposed of

See Also:

• X3DProtoDeclaration.createInstance()

dispose

public void dispose()
             throws InvalidNodeException

Description copied from interface: X3DProtoDeclaration

Dispose of this node's resources. This is used to indicate to the browser that the java side of the application does not require the resources represented by this node. The browser is now free to do what it likes with the node.

This in no way implies that the browser is to remove this node from the scene graph, only that the java code is no longer interested in this particular node through this reference.

Once this method has been called, any further calls to methods of this instance of the class is shall generate an InvalidNodeException.

Specified by:

dispose in interface X3DProtoDeclaration

Throws:

InvalidNodeException - The node is no longer valid and can't be disposed of again.

See Also:

• X3DProtoDeclaration.dispose()