com.haulmont.cuba.gui.components.data

Interface TreeDataGridItems<T>

Type Parameters:

T - items type

All Superinterfaces:

DataGridItems<T>, DataGridItems.Sortable<T>, DataUnit

All Known Implementing Classes:

ContainerTreeDataGridItems, DatasourceTreeDataGridItems, EmptyTreeDataGridItems

public interface TreeDataGridItems<T>
extends DataGridItems.Sortable<T>

A common interface for providing data for the TreeDataGrid component.

Nested Class Summary

Nested classes/interfaces inherited from interface com.haulmont.cuba.gui.components.data.DataGridItems

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

Nested classes/interfaces inherited from interface com.haulmont.cuba.gui.components.data.DataUnit

DataUnit.StateChangeEvent

Method Summary

Modifier and Type	Method and Description
int	getChildCount(T parent)
java.util.stream.Stream<T>	getChildren(T item)
java.lang.String	getHierarchyPropertyName() Returns the property of entity which forms the hierarchy.
T	getParent(T item)
boolean	hasChildren(T item)

Methods inherited from interface com.haulmont.cuba.gui.components.data.DataGridItems.Sortable

enableSorting, resetSortOrder, sort, suppressSorting

Methods inherited from interface com.haulmont.cuba.gui.components.data.DataGridItems

addItemSetChangeListener, addSelectedItemChangeListener, addValueChangeListener, containsItem, getItem, getItemByIndex, getItemId, getItems, getItems, getSelectedItem, indexOfItem, setSelectedItem, size

Methods inherited from interface com.haulmont.cuba.gui.components.data.DataUnit

addStateChangeListener, getState

Method Detail

getChildCount

int getChildCount(T parent)

Parameters:

parent - the parent item

Returns:

child count of the given parent item

getChildren

java.util.stream.Stream<T> getChildren(@Nullable
                                       T item)

Parameters:

item - the item to obtain children or null to get root items

Returns:

children of the given item

hasChildren

boolean hasChildren(T item)

Parameters:

item - the item to check

Returns:

true if the item has children, false otherwise

getParent

@Nullable
T getParent(T item)

Parameters:

item - the item to get parent

Returns:

the parent of the given item or null if no parent

getHierarchyPropertyName

java.lang.String getHierarchyPropertyName()

Returns the property of entity which forms the hierarchy.

Returns:

hierarchy property name