Package io.jmix.ui.component.data.datagrid

Class EmptyDataGridItems<E>

java.lang.Object

io.jmix.ui.component.data.datagrid.EmptyDataGridItems<E>

All Implemented Interfaces:

DataGridItems<E>, DataGridItems.Sortable<E>, DataUnit, EmptyDataUnit, EntityDataGridItems<E>, EntityDataUnit

Direct Known Subclasses:

EmptyTreeDataGridItems

public class EmptyDataGridItems<E>
extends Object
implements EntityDataGridItems<E>, DataGridItems.Sortable<E>, EmptyDataUnit

Nested Class Summary

Nested classes/interfaces inherited from interface io.jmix.ui.component.data.DataGridItems

DataGridItems.ItemSetChangeEvent<T>, DataGridItems.SelectedItemChangeEvent<T>, DataGridItems.Sortable<T>, DataGridItems.ValueChangeEvent<T>

Nested classes/interfaces inherited from interface io.jmix.ui.component.data.DataUnit

DataUnit.StateChangeEvent

Field Summary

Fields

Modifier and Type	Field	Description
protected MetaClass	metaClass

Constructor Summary

Constructors

Constructor	Description
EmptyDataGridItems(MetaClass metaClass)

Method Summary

Modifier and Type	Method	Description
Subscription	addItemSetChangeListener(Consumer<DataGridItems.ItemSetChangeEvent<E>> listener)	Registers a new item set change listener.
Subscription	addSelectedItemChangeListener(Consumer<DataGridItems.SelectedItemChangeEvent<E>> listener)	Registers a new selected item change listener.
Subscription	addStateChangeListener(Consumer<DataUnit.StateChangeEvent> listener)	Registers a new state change listener.
Subscription	addValueChangeListener(Consumer<DataGridItems.ValueChangeEvent<E>> listener)	Registers a new value change listener.
boolean	containsItem(E item)
MetaClass	getEntityMetaClass()
E	getItem(Object itemId)
E	getItemByIndex(int index)
Object	getItemId(E item)
Stream<E>	getItems()
List<E>	getItems(int startIndex, int numberOfItems)
Object	getItemValue(Object itemId, MetaPropertyPath propertyId)
E	getSelectedItem()
BindingState	getState()
int	indexOfItem(E item)
void	resetSortOrder()
void	setSelectedItem(E item)	Set current item in the source.
int	size()
void	sort(Object[] propertyId, boolean[] ascending)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.jmix.ui.component.data.DataGridItems.Sortable

enableSorting, suppressSorting

Field Details

metaClass

protected MetaClass metaClass

Constructor Details

EmptyDataGridItems

public EmptyDataGridItems(MetaClass metaClass)

Method Details

getItemId

public Object getItemId(E item)

Specified by:

getItemId in interface DataGridItems<E>

Parameters:

item - the item for obtaining the id

Returns:

the id on the given item

getItem

public E getItem(@Nullable
 Object itemId)

Specified by:

getItem in interface DataGridItems<E>

Parameters:

itemId - the item id

Returns:

the item by the given id

getItemValue

@Nullable
public Object getItemValue(Object itemId,
 MetaPropertyPath propertyId)

Specified by:

getItemValue in interface DataGridItems<E>

Parameters:

itemId - the item id

propertyId - the property id

Returns:

the item value

indexOfItem

public int indexOfItem(E item)

Specified by:

indexOfItem in interface DataGridItems<E>

Parameters:

item - the item for obtaining the index

Returns:

the index of the given item

getItemByIndex

@Nullable
public E getItemByIndex(int index)

Specified by:

getItemByIndex in interface DataGridItems<E>

Parameters:

index - the item index

Returns:

the item by the given index

getItems

public Stream<E> getItems()

Specified by:

getItems in interface DataGridItems<E>

Returns:

the stream of all items

getItems

public List<E> getItems(int startIndex,
 int numberOfItems)

Specified by:

getItems in interface DataGridItems<E>

Parameters:

startIndex - the start index

numberOfItems - the number of items

Returns:

items from the startIndex and size not exceeding the specified number

containsItem

public boolean containsItem(E item)

Specified by:

containsItem in interface DataGridItems<E>

Parameters:

item - an item to check

Returns:

true if the underlying collection contains an item, false otherwise

size

public int size()

Specified by:

size in interface DataGridItems<E>

Returns:

size of the underlying collection

getSelectedItem

@Nullable
public E getSelectedItem()

Specified by:

getSelectedItem in interface DataGridItems<E>

Returns:

the current item contained in the source

setSelectedItem

public void setSelectedItem(@Nullable
 E item)

Description copied from interface: DataGridItems

Set current item in the source.

Specified by:

setSelectedItem in interface DataGridItems<E>

Parameters:

item - the item to set

addValueChangeListener

public Subscription addValueChangeListener(Consumer<DataGridItems.ValueChangeEvent<E>> listener)

Description copied from interface: DataGridItems

Registers a new value change listener.

Specified by:

addValueChangeListener in interface DataGridItems<E>

Parameters:

listener - the listener to be added

Returns:

a registration object for removing an event listener added to a source

addItemSetChangeListener

public Subscription addItemSetChangeListener(Consumer<DataGridItems.ItemSetChangeEvent<E>> listener)

Description copied from interface: DataGridItems

Registers a new item set change listener.

Specified by:

addItemSetChangeListener in interface DataGridItems<E>

Parameters:

listener - the listener to be added

Returns:

a registration object for removing an event listener added to a source

addSelectedItemChangeListener

public Subscription addSelectedItemChangeListener(Consumer<DataGridItems.SelectedItemChangeEvent<E>> listener)

Description copied from interface: DataGridItems

Registers a new selected item change listener.

Specified by:

addSelectedItemChangeListener in interface DataGridItems<E>

Parameters:

listener - the listener to be added

Returns:

a registration object for removing an event listener added to a source

getEntityMetaClass

@Nullable
public MetaClass getEntityMetaClass()

Specified by:

getEntityMetaClass in interface EntityDataUnit

Returns:

MetaClass of an entity contained in the source

getState

public BindingState getState()

Specified by:

getState in interface DataUnit

Returns:

a state of this source

addStateChangeListener

public Subscription addStateChangeListener(Consumer<DataUnit.StateChangeEvent> listener)

Description copied from interface: DataUnit

Registers a new state change listener.

Specified by:

addStateChangeListener in interface DataUnit

Parameters:

listener - the listener to be added

Returns:

a registration object for removing an event listener added to a source

sort

public void sort(Object[] propertyId,
 boolean[] ascending)

Specified by:

sort in interface DataGridItems.Sortable<E>

resetSortOrder

public void resetSortOrder()

Specified by:

resetSortOrder in interface DataGridItems.Sortable<E>