Package com.storedobject.vaadin

Class DataList<T>

java.lang.Object

com.storedobject.vaadin.DataList<T>

Type Parameters:

T - Type of data in the list.

All Implemented Interfaces:

Iterable<T>, Collection<T>, List<T>, SequencedCollection<T>

public class DataList<T>
extends Object
implements List<T>

A list data structure with a "refresh" listener. The refresh methods of the listeners (DataList.RefreshListener) are called whenever list is changed by adding/deleting/updating items.

This class may be used instead of normal List if you want to use it as data for ListGrid. The same instance may be used in multiple ListGrids and all grids will be simultaneously updated when data is updated programmatically.

Author:

Syam

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	DataList.RefreshListener<T>	Definition of refresh listener that can be added to the DataList.

Constructor Summary

Constructors

Constructor	Description
DataList()	Constructor.
DataList(List<T> data)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	add(int index, T item)
boolean	add(T item)
boolean	addAll(int index, Collection<? extends T> collection)
boolean	addAll(Collection<? extends T> collection)
com.vaadin.flow.shared.Registration	addRefreshListener(DataList.RefreshListener<T> listener)	Add a refresh listener for this list.
void	clear()
boolean	contains(Object item)
boolean	containsAll(Collection<?> collection)
T	get(int index)
List<T>	getData()	Get the data of this list.
int	indexOf(Object item)
boolean	isEmpty()
Iterator<T>	iterator()
int	lastIndexOf(Object item)
ListIterator<T>	listIterator()
ListIterator<T>	listIterator(int index)
void	refresh()	Inform the listeners that the items in this list are refreshed due to addition or deletion of items.
void	refresh(T item)	Inform the listeners that an item of this in this list is refreshed.
T	remove(int index)
boolean	remove(Object item)
boolean	removeAll(Collection<?> collection)
boolean	removeIf(Predicate<? super T> filter)
void	replaceAll(UnaryOperator<T> operator)
boolean	retainAll(Collection<?> collection)
T	set(int index, T item)
int	size()
void	sort(Comparator<? super T> comparator)
List<T>	subList(int fromIndex, int toIndex)
Object[]	toArray()
<T1> T1[]	toArray(T1[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addFirst, addLast, equals, getFirst, getLast, hashCode, removeFirst, removeLast, reversed, spliterator

Constructor Details

DataList

public DataList()

Constructor.

DataList

public DataList(List<T> data)

Constructor.

Parameters:

data - for the list.

Method Details

getData

public List<T> getData()

Get the data of this list. If the data is directly manipulated, refresh() or refresh(Object) should be invoked to inform the listeners about the changes.

Returns:

Data of this list.

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface List<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface List<T>

contains

public boolean contains(Object item)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface List<T>

iterator

@Nonnull
public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface List<T>

toArray

@Nonnull
public Object[] toArray()

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface List<T>

toArray

@Nonnull
public <T1> T1[] toArray(@Nonnull
 T1[] a)

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface List<T>

add

public boolean add(T item)

Specified by:

add in interface Collection<T>

Specified by:

add in interface List<T>

remove

public boolean remove(Object item)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface List<T>

containsAll

public boolean containsAll(@Nonnull
 Collection<?> collection)

Specified by:

containsAll in interface Collection<T>

Specified by:

containsAll in interface List<T>

addAll

public boolean addAll(@Nonnull
 Collection<? extends T> collection)

Specified by:

addAll in interface Collection<T>

Specified by:

addAll in interface List<T>

addAll

public boolean addAll(int index,
 @Nonnull
 Collection<? extends T> collection)

Specified by:

addAll in interface List<T>

removeAll

public boolean removeAll(@Nonnull
 Collection<?> collection)

Specified by:

removeAll in interface Collection<T>

Specified by:

removeAll in interface List<T>

removeIf

public boolean removeIf(Predicate<? super T> filter)

Specified by:

removeIf in interface Collection<T>

retainAll

public boolean retainAll(@Nonnull
 Collection<?> collection)

Specified by:

retainAll in interface Collection<T>

Specified by:

retainAll in interface List<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface List<T>

get

public T get(int index)

Specified by:

get in interface List<T>

set

public T set(int index,
 T item)

Specified by:

set in interface List<T>

add

public void add(int index,
 T item)

Specified by:

add in interface List<T>

remove

public T remove(int index)

Specified by:

remove in interface List<T>

indexOf

public int indexOf(Object item)

Specified by:

indexOf in interface List<T>

lastIndexOf

public int lastIndexOf(Object item)

Specified by:

lastIndexOf in interface List<T>

listIterator

@Nonnull
public ListIterator<T> listIterator()

Specified by:

listIterator in interface List<T>

listIterator

@Nonnull
public ListIterator<T> listIterator(int index)

Specified by:

listIterator in interface List<T>

subList

@Nonnull
public List<T> subList(int fromIndex,
 int toIndex)

Specified by:

subList in interface List<T>

refresh

public void refresh()

Inform the listeners that the items in this list are refreshed due to addition or deletion of items.

refresh

public void refresh(T item)

Inform the listeners that an item of this in this list is refreshed.

Parameters:

item - Item that is changed.

addRefreshListener

public com.vaadin.flow.shared.Registration addRefreshListener(DataList.RefreshListener<T> listener)

Add a refresh listener for this list.

Parameters:

listener - Listener to add.

Returns:

Registration.

sort

public void sort(Comparator<? super T> comparator)

Specified by:

sort in interface List<T>

replaceAll

public void replaceAll(UnaryOperator<T> operator)

Specified by:

replaceAll in interface List<T>