javafx.collections

Class ListChangeBuilder.SingleChange<E>

java.lang.Object

javafx.collections.ListChangeListener.Change<E>

javafx.collections.ListChangeBuilder.SingleChange<E>

Enclosing class:

ListChangeBuilder<E>

private static class ListChangeBuilder.SingleChange<E>
extends ListChangeListener.Change<E>

Field Summary

Fields

Modifier and Type	Field and Description
private ListChangeBuilder.SubChange<E>	change
private boolean	onChange

Constructor Summary

Constructors

Constructor and Description
SingleChange(ListChangeBuilder.SubChange<E> change, ObservableListBase<E> list)

Method Summary

Modifier and Type	Method and Description
private void	checkState()
int	getFrom() If ListChangeListener.Change.wasAdded() is true, the interval contains all the values that were added.
protected int[]	getPermutation() If this change is a permutation, it returns an integer array that describes the permutation.
java.util.List<E>	getRemoved() An immutable list of removed/replaced elements.
int	getTo() The end of the change interval.
boolean	next() Goes to the next change.
void	reset() Resets to the initial stage.
java.lang.String	toString()
boolean	wasUpdated() Indicates that the elements between ListChangeListener.Change.getFrom() (inclusive) to ListChangeListener.Change.getTo() exclusive has changed.

Methods inherited from class javafx.collections.ListChangeListener.Change

getAddedSize, getAddedSubList, getList, getPermutation, getRemovedSize, wasAdded, wasPermutated, wasRemoved, wasReplaced

Methods inherited from class java.lang.Object

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

Field Detail

change

private final ListChangeBuilder.SubChange<E> change

onChange

private boolean onChange

Constructor Detail

SingleChange

public SingleChange(ListChangeBuilder.SubChange<E> change,
                    ObservableListBase<E> list)

Method Detail

next

public boolean next()

Description copied from class: ListChangeListener.Change

Goes to the next change. The Change instance, in its initial state, is invalid and requires a call to next() before calling other methods. The first next() call will make this object represent the first change.

Specified by:

next in class ListChangeListener.Change<E>

Returns:

true if switched to the next change, false if this is the last change.

reset

public void reset()

Description copied from class: ListChangeListener.Change

Resets to the initial stage. After this call, ListChangeListener.Change.next() must be called before working with the first change.

Specified by:

reset in class ListChangeListener.Change<E>

getFrom

public int getFrom()

Description copied from class: ListChangeListener.Change

If ListChangeListener.Change.wasAdded() is true, the interval contains all the values that were added. If ListChangeListener.Change.wasPermutated() is true, the interval marks the values that were permutated. If ListChangeListener.Change.wasRemoved() is true and wasAdded is false, ListChangeListener.Change.getFrom() and ListChangeListener.Change.getTo() should return the same number - the place where the removed elements were positioned in the list.

Specified by:

getFrom in class ListChangeListener.Change<E>

Returns:

a beginning (inclusive) of an interval related to the change

getTo

public int getTo()

Description copied from class: ListChangeListener.Change

The end of the change interval.

Specified by:

getTo in class ListChangeListener.Change<E>

Returns:

an end (exclusive) of an interval related to the change.

See Also:

ListChangeListener.Change.getFrom()

getRemoved

public java.util.List<E> getRemoved()

Description copied from class: ListChangeListener.Change

An immutable list of removed/replaced elements. If no elements were removed from the list, an empty list is returned.

Specified by:

getRemoved in class ListChangeListener.Change<E>

Returns:

a list with all the removed elements

getPermutation

protected int[] getPermutation()

Description copied from class: ListChangeListener.Change

If this change is a permutation, it returns an integer array that describes the permutation. This array maps directly from the previous indexes to the new ones. This method is not publicly accessible and therefore can return an array safely. The 0 index of the array corresponds to index ListChangeListener.Change.getFrom() of the list. The same applies for the last index and ListChangeListener.Change.getTo(). The method is used by ListChangeListener.Change.wasPermutated() and ListChangeListener.Change.getPermutation(int) methods.

Specified by:

getPermutation in class ListChangeListener.Change<E>

Returns:

empty array if this is not permutation or an integer array containing the permutation

wasUpdated

public boolean wasUpdated()

Description copied from class: ListChangeListener.Change

Indicates that the elements between ListChangeListener.Change.getFrom() (inclusive) to ListChangeListener.Change.getTo() exclusive has changed. This is the only optional event type and may not be fired by all ObservableLists.

Overrides:

wasUpdated in class ListChangeListener.Change<E>

Returns:

true if the current change is an update change.

checkState

private void checkState()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object