com.yworks.yfiles.view.input

Class PortsHandleProvider

java.lang.Object

com.yworks.yfiles.view.input.PortsHandleProvider

All Implemented Interfaces:

IHandleProvider

public class PortsHandleProvider
extends Object
implements IHandleProvider

A simple implementation of an IHandleProvider that returns all handles in the lookup of the ports owned by the given owner.

Using this class to display port handles will result in exceptions if the underlying port instances are removed from the graph while the handles are displayed. This can happen, for example, through Undo or if ports are removed programmatically with IGraph.remove(com.yworks.yfiles.graph.IModelItem). In that case, you need to query the handles again before interacting with the graph, for example by temporarily unselecting and reselecting the port-owning nodes.

Field Summary

Fields

Modifier and Type	Field and Description
protected IPortOwner	portOwner The owner of the ports.

Constructor Summary

Constructors

Constructor and Description
PortsHandleProvider(IPortOwner owner) Creates an instance using the given owner as the provider for the ports.

Method Summary

Modifier and Type	Method and Description
protected IHandle	getHandle(IPort port) Retrieves the handle implementation from the port's lookup.
Iterable<IHandle>	getHandles(IInputModeContext context) Returns a collection of zero or more IHandle implementations that are associated with the ports of this context.

Methods inherited from class java.lang.Object

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

Field Detail

portOwner

protected final IPortOwner portOwner

The owner of the ports.

Constructor Detail

PortsHandleProvider

public PortsHandleProvider(IPortOwner owner)

Creates an instance using the given owner as the provider for the ports.

Method Detail

getHandle

protected IHandle getHandle(IPort port)

Retrieves the handle implementation from the port's lookup.

getHandles

public final Iterable<IHandle> getHandles(IInputModeContext context)

Returns a collection of zero or more IHandle implementations that are associated with the ports of this context.

Specified by:

getHandles in interface IHandleProvider

Returns:

A collection of handles.