com.jgoodies.forms.extras

Class FormLayoutUtils.ConstraintIterator

java.lang.Object

com.jgoodies.forms.extras.FormLayoutUtils.ConstraintIterator

Enclosing class:

FormLayoutUtils

public static final class FormLayoutUtils.ConstraintIterator
extends java.lang.Object

Iterates over a FormLayout container's CellConstraints. The container's child component collection and the layout's constraints collection must not be changed during the iteration; otherwise the behavior of this iterator is unspecified and unsafe.

See Also:

FormLayout, CellConstraints

Field Summary

Fields

Modifier and Type	Field and Description
private java.awt.Component[]	components Holds a copy of the container's components.
private int	index The current index in the component array.
private FormLayout	layout Refers to the FormLayout instance used to look up constraints.

Constructor Summary

Constructors

Constructor and Description
ConstraintIterator(java.awt.Container container) Constructs a ConstraintIterator for the given FormLayout container.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Returns true if the iteration has more elements.
CellConstraints	nextConstraints() Returns the next element in the iteration.

Methods inherited from class java.lang.Object

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

Field Detail

layout

private final FormLayout layout

Refers to the FormLayout instance used to look up constraints.

components

private final java.awt.Component[] components

Holds a copy of the container's components.

index

private int index

The current index in the component array. Used to determine whether there are more elements and to look up the next constraints.

Constructor Detail

ConstraintIterator

public ConstraintIterator(java.awt.Container container)

Constructs a ConstraintIterator for the given FormLayout container. Useful to iterate over the container's CellConstraints.

Parameters:

container - the layout container

Throws:

java.lang.IllegalArgumentException - if the container's layout is not a FormLayout

Method Detail

hasNext

public boolean hasNext()

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Returns:

true if the iterator has more elements.

nextConstraints

public CellConstraints nextConstraints()

Returns the next element in the iteration.

Returns:

the next element in the iteration.

Throws:

java.util.NoSuchElementException - iteration has no more elements.