org.vaadin.miki.superfields.collections

Class CollectionField<T,C extends Collection<T>>

java.lang.Object

com.vaadin.flow.component.Component

com.vaadin.flow.component.AbstractField<com.vaadin.flow.component.customfield.CustomField<T>,T>

com.vaadin.flow.component.customfield.CustomField<C>

org.vaadin.miki.superfields.collections.CollectionField<T,C>

Type Parameters:

T - Type of the element in the collection.

C - Type of the collection.

All Implemented Interfaces:

com.vaadin.flow.component.AttachNotifier, com.vaadin.flow.component.BlurNotifier<com.vaadin.flow.component.customfield.CustomField>, com.vaadin.flow.component.DetachNotifier, com.vaadin.flow.component.Focusable<com.vaadin.flow.component.customfield.CustomField>, com.vaadin.flow.component.FocusNotifier<com.vaadin.flow.component.customfield.CustomField>, com.vaadin.flow.component.HasElement, com.vaadin.flow.component.HasEnabled, com.vaadin.flow.component.HasHelper, com.vaadin.flow.component.HasLabel, com.vaadin.flow.component.HasSize, com.vaadin.flow.component.HasStyle, com.vaadin.flow.component.HasValidation, com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C>,C>,C>, com.vaadin.flow.component.HasValueAndElement<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C>,C>,C>, Serializable, HasHelperPositionable, HasId, HasLabelPositionable, WithHelperMixin<CollectionField<T,C>>, WithHelperPositionableMixin<CollectionField<T,C>>, WithIdMixin<CollectionField<T,C>>, WithLabelMixin<CollectionField<T,C>>, WithLabelPositionableMixin<CollectionField<T,C>>, WithValueMixin<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C>,C>,C,CollectionField<T,C>>, CollectionController, HasCollectionElementFilter<T>, HasCollectionValueComponentProvider<T>, WithCollectionElementFilterMixin<T,CollectionField<T,C>>, WithCollectionValueComponentProviderMixin<T,CollectionField<T,C>>

@Tag(value="collection-field")
 @CssImport(value="./styles/label-positions-custom-field.css",
           themeFor="collection-field")
 @JsModule(value="./collection-field.js")
public class CollectionField<T,C extends Collection<T>>
extends com.vaadin.flow.component.customfield.CustomField<C>
implements CollectionController, WithIdMixin<CollectionField<T,C>>, com.vaadin.flow.component.HasStyle, WithCollectionValueComponentProviderMixin<T,CollectionField<T,C>>, WithHelperMixin<CollectionField<T,C>>, WithHelperPositionableMixin<CollectionField<T,C>>, WithValueMixin<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C>,C>,C,CollectionField<T,C>>, WithCollectionElementFilterMixin<T,CollectionField<T,C>>, WithLabelPositionableMixin<CollectionField<T,C>>, WithLabelMixin<CollectionField<T,C>>

All-purpose field for editing and maintaining values that are Collections. Allows filtering individual elements through setCollectionElementFilter(SerializablePredicate) (by default filters out all nulls).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.vaadin.flow.component.AbstractField

com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<C extends com.vaadin.flow.component.Component,V>

Nested classes/interfaces inherited from interface com.vaadin.flow.component.HasValue

com.vaadin.flow.component.HasValue.ValueChangeEvent<V>, com.vaadin.flow.component.HasValue.ValueChangeListener<E extends com.vaadin.flow.component.HasValue.ValueChangeEvent<?>>

Nested classes/interfaces inherited from interface com.vaadin.flow.component.BlurNotifier

com.vaadin.flow.component.BlurNotifier.BlurEvent<C extends com.vaadin.flow.component.Component>

Nested classes/interfaces inherited from interface com.vaadin.flow.component.FocusNotifier

com.vaadin.flow.component.FocusNotifier.FocusEvent<C extends com.vaadin.flow.component.Component>

Field Summary

Fields

Modifier and Type	Field and Description
static CollectionLayoutProvider<com.vaadin.flow.component.orderedlayout.FlexLayout>	DEFAULT_LAYOUT_PROVIDER Default layout provider.
static String	LAYOUT_STYLE_NAME CSS class name that will be added to the main layout of this component.
static int	NO_ITEM_INDEX Integer value indicating no index being passed.

Fields inherited from interface org.vaadin.miki.markers.HasHelperPositionable

HELPER_ABOVE_THEME_VARIANT

Fields inherited from interface org.vaadin.miki.markers.HasLabelPositionable

LABEL_POSITION_ATTRIBUTE, LABEL_POSITION_DETAILS_ATTRIBUTE

Constructor Summary

Constructors

Constructor and Description
CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier, CollectionLayoutProvider<?> collectionLayoutProvider, CollectionValueComponentProvider<T,?> collectionValueComponentProvider) Creates new field.
CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier, CollectionLayoutProvider<?> collectionLayoutProvider, com.vaadin.flow.function.SerializableSupplier<F> fieldSupplier) Creates new field.
CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier, CollectionValueComponentProvider<T,?> collectionValueComponentProvider) Creates new field using DEFAULT_LAYOUT_PROVIDER as root layout provider.
CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier, com.vaadin.flow.function.SerializableSupplier<F> fieldSupplier) Creates new field using DEFAULT_LAYOUT_PROVIDER as root layout provider.

Method Summary

Modifier and Type	Method and Description
void	add(int atIndex) Adds a new component at a specified position, moving subsequent elements by one.
void	focus()
protected C	generateModelValue()
com.vaadin.flow.function.SerializablePredicate<T>	getCollectionElementFilter() Returns current value filter.
<W extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,T>> CollectionValueComponentProvider<T,W>	getCollectionValueComponentProvider() Returns the current provider used to generate components.
void	remove(int atIndex) Removes a component at given index.
void	removeAll() Clears the collection and removes all elements from it.
protected void	repaintFields(C ts) Paints all fields that need repainting and assigns values from the collection to each of them.
void	setCollectionElementFilter(com.vaadin.flow.function.SerializablePredicate<T> collectionElementFilter) Sets a value filter.
void	setCollectionLayoutProvider(CollectionLayoutProvider<?> collectionLayoutProvider) Sets new layout from a given provider and repaints all fields.
void	setCollectionValueComponentProvider(CollectionValueComponentProvider<T,?> collectionValueComponentProvider) Sets the provider used to generate components for each element of the collection.
protected void	setPresentationValue(C ts)
void	setReadOnly(boolean readOnly)
int	size() Returns the current size of the collection.
protected void	updateIndices(int fromIndex) Updates all indices on all fields that implement HasIndex.
protected void	updateValue()
CollectionField<T,C>	withCollectionLayoutProvider(CollectionLayoutProvider<?> collectionLayoutProvider) Chains setCollectionLayoutProvider(CollectionLayoutProvider) and returns itself.

Methods inherited from class com.vaadin.flow.component.customfield.CustomField

add, getErrorMessage, getLabel, isInvalid, remove, setErrorMessage, setInvalid, setLabel

Methods inherited from class com.vaadin.flow.component.AbstractField

addValueChangeListener, getEmptyValue, getValue, isEmpty, setModelValue, setValue, valueEquals

Methods inherited from class com.vaadin.flow.component.Component

addListener, fireEvent, from, get, getChildren, getElement, getEventBus, getId, getLocale, getParent, getTranslation, getTranslation, getTranslation, getTranslation, getUI, hasListener, isAttached, isTemplateMapped, isVisible, onAttach, onDetach, onEnabledStateChanged, set, setElement, setId, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.vaadin.miki.superfields.collections.CollectionController

add, isEmpty, remove

Methods inherited from interface org.vaadin.miki.markers.WithIdMixin

withId

Methods inherited from interface org.vaadin.miki.markers.HasId

getId, setId

Methods inherited from interface com.vaadin.flow.component.HasStyle

addClassName, addClassNames, getClassName, getClassNames, getStyle, hasClassName, removeClassName, removeClassNames, setClassName, setClassName

Methods inherited from interface org.vaadin.miki.superfields.collections.WithCollectionValueComponentProviderMixin

withCollectionComponentProvider

Methods inherited from interface org.vaadin.miki.markers.WithHelperMixin

withHelperComponent, withHelperText

Methods inherited from interface com.vaadin.flow.component.HasHelper

getHelperComponent, getHelperText, setHelperComponent, setHelperText

Methods inherited from interface org.vaadin.miki.markers.WithHelperPositionableMixin

withHelperAbove, withHelperAbove, withHelperBelow

Methods inherited from interface org.vaadin.miki.markers.HasHelperPositionable

isHelperAbove, setHelperAbove, setHelperAbove, setHelperBelow

Methods inherited from interface org.vaadin.miki.markers.WithValueMixin

withValue

Methods inherited from interface com.vaadin.flow.component.HasValue

addValueChangeListener, clear, getEmptyValue, getOptionalValue, getValue, isEmpty, isReadOnly, isRequiredIndicatorVisible, setRequiredIndicatorVisible, setValue

Methods inherited from interface org.vaadin.miki.superfields.collections.WithCollectionElementFilterMixin

withCollectionElementFilter

Methods inherited from interface org.vaadin.miki.markers.WithLabelPositionableMixin

withLabelPosition

Methods inherited from interface org.vaadin.miki.markers.HasLabelPositionable

getLabelPosition, setLabelPosition

Methods inherited from interface org.vaadin.miki.markers.WithLabelMixin

withLabel

Methods inherited from interface com.vaadin.flow.component.HasLabel

getLabel, setLabel

Methods inherited from interface com.vaadin.flow.component.HasElement

getElement

Methods inherited from interface com.vaadin.flow.component.HasSize

getCssSize, getHeight, getHeightUnit, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getWidth, getWidthUnit, setHeight, setHeight, setHeightFull, setMaxHeight, setMaxHeight, setMaxWidth, setMaxWidth, setMinHeight, setMinHeight, setMinWidth, setMinWidth, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthFull

Methods inherited from interface com.vaadin.flow.component.Focusable

addFocusShortcut, blur, getTabIndex, setTabIndex

Methods inherited from interface com.vaadin.flow.component.BlurNotifier

addBlurListener

Methods inherited from interface com.vaadin.flow.component.FocusNotifier

addFocusListener

Methods inherited from interface com.vaadin.flow.component.HasEnabled

isEnabled, setEnabled

Methods inherited from interface com.vaadin.flow.component.HasValueAndElement

isReadOnly, isRequiredIndicatorVisible, setRequiredIndicatorVisible

Methods inherited from interface com.vaadin.flow.component.AttachNotifier

addAttachListener

Methods inherited from interface com.vaadin.flow.component.DetachNotifier

addDetachListener

Field Detail

LAYOUT_STYLE_NAME

public static final String LAYOUT_STYLE_NAME

CSS class name that will be added to the main layout of this component.

See Also:

Constant Field Values

NO_ITEM_INDEX

public static final int NO_ITEM_INDEX

Integer value indicating no index being passed.

See Also:

Constant Field Values

DEFAULT_LAYOUT_PROVIDER

public static final CollectionLayoutProvider<com.vaadin.flow.component.orderedlayout.FlexLayout> DEFAULT_LAYOUT_PROVIDER

Default layout provider. Produces a column-based FlexLayout.

Constructor Detail

CollectionField

public CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier,
                       com.vaadin.flow.function.SerializableSupplier<F> fieldSupplier)

Creates new field using DEFAULT_LAYOUT_PROVIDER as root layout provider.

Type Parameters:

F - Type of the field used.

Parameters:

emptyCollectionSupplier - Provides an empty collection of elements.

fieldSupplier - Method to call when a component for an element is needed.

CollectionField

public CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier,
                       CollectionValueComponentProvider<T,?> collectionValueComponentProvider)

Creates new field using DEFAULT_LAYOUT_PROVIDER as root layout provider.

Parameters:

emptyCollectionSupplier - Provides an empty collection of elements.

collectionValueComponentProvider - Provider for components for each element in the component.

CollectionField

public CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier,
                       CollectionLayoutProvider<?> collectionLayoutProvider,
                       com.vaadin.flow.function.SerializableSupplier<F> fieldSupplier)

Creates new field.

Type Parameters:

F - Type of the field used.

Parameters:

emptyCollectionSupplier - Provides an empty collection of elements.

collectionLayoutProvider - Source of root layout for this component.

fieldSupplier - Method to call when a component for an element is needed.

CollectionField

public CollectionField(com.vaadin.flow.function.SerializableSupplier<C> emptyCollectionSupplier,
                       CollectionLayoutProvider<?> collectionLayoutProvider,
                       CollectionValueComponentProvider<T,?> collectionValueComponentProvider)

Creates new field.

Parameters:

emptyCollectionSupplier - Provides an empty collection of elements.

collectionLayoutProvider - Source of root layout for this component.

collectionValueComponentProvider - Provider for components for each element in the component.

Method Detail

setCollectionLayoutProvider

public final void setCollectionLayoutProvider(CollectionLayoutProvider<?> collectionLayoutProvider)

Sets new layout from a given provider and repaints all fields.

Parameters:

collectionLayoutProvider - A provider to use. Defaults to DEFAULT_LAYOUT_PROVIDER.

withCollectionLayoutProvider

public final CollectionField<T,C> withCollectionLayoutProvider(CollectionLayoutProvider<?> collectionLayoutProvider)

Chains setCollectionLayoutProvider(CollectionLayoutProvider) and returns itself.

Parameters:

collectionLayoutProvider - A provider to use. Defaults to DEFAULT_LAYOUT_PROVIDER.

Returns:

This.

See Also:

setCollectionLayoutProvider(CollectionLayoutProvider)

setReadOnly

public void setReadOnly(boolean readOnly)

Specified by:

setReadOnly in interface com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C extends Collection<T>>,C extends Collection<T>>,C extends Collection<T>>

Specified by:

setReadOnly in interface com.vaadin.flow.component.HasValueAndElement<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<C extends Collection<T>>,C extends Collection<T>>,C extends Collection<T>>

generateModelValue

protected C generateModelValue()

Specified by:

generateModelValue in class com.vaadin.flow.component.customfield.CustomField<C extends Collection<T>>

updateValue

protected void updateValue()

Overrides:

updateValue in class com.vaadin.flow.component.customfield.CustomField<C extends Collection<T>>

setPresentationValue

protected void setPresentationValue(C ts)

Specified by:

setPresentationValue in class com.vaadin.flow.component.customfield.CustomField<C extends Collection<T>>

size

public int size()

Description copied from interface: CollectionController

Returns the current size of the collection.

Specified by:

size in interface CollectionController

Returns:

A non-negative number.

updateIndices

protected void updateIndices(int fromIndex)

Updates all indices on all fields that implement HasIndex. This method is called after a component is removed or added, but before the value of the component is changed.

Parameters:

fromIndex - Index, from which the reindexing should occur.

add

public void add(int atIndex)

Description copied from interface: CollectionController

Adds a new component at a specified position, moving subsequent elements by one.

Specified by:

add in interface CollectionController

Parameters:

atIndex - Index to add at.

remove

public void remove(int atIndex)

Description copied from interface: CollectionController

Removes a component at given index. All subsequent components are moved forward by one.

Specified by:

remove in interface CollectionController

Parameters:

atIndex - Index to remove component at.

removeAll

public void removeAll()

Description copied from interface: CollectionController

Clears the collection and removes all elements from it.

Specified by:

removeAll in interface CollectionController

repaintFields

protected void repaintFields(C ts)

Paints all fields that need repainting and assigns values from the collection to each of them.

Parameters:

ts - Collection with elements.

setCollectionValueComponentProvider

public final void setCollectionValueComponentProvider(CollectionValueComponentProvider<T,?> collectionValueComponentProvider)

Description copied from interface: HasCollectionValueComponentProvider

Sets the provider used to generate components for each element of the collection.

Specified by:

setCollectionValueComponentProvider in interface HasCollectionValueComponentProvider<T>

Parameters:

collectionValueComponentProvider - A non-null provider.

getCollectionValueComponentProvider

public <W extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,T>> CollectionValueComponentProvider<T,W> getCollectionValueComponentProvider()

Description copied from interface: HasCollectionValueComponentProvider

Returns the current provider used to generate components.

Specified by:

getCollectionValueComponentProvider in interface HasCollectionValueComponentProvider<T>

Type Parameters:

W - Generic type of the actual component.

Returns:

A non-null provider.

setCollectionElementFilter

public void setCollectionElementFilter(com.vaadin.flow.function.SerializablePredicate<T> collectionElementFilter)

Description copied from interface: HasCollectionElementFilter

Sets a value filter. Only items matching the filter will be included in the generated value.

Specified by:

setCollectionElementFilter in interface HasCollectionElementFilter<T>

Parameters:

collectionElementFilter - Value filter to use.

getCollectionElementFilter

public com.vaadin.flow.function.SerializablePredicate<T> getCollectionElementFilter()

Description copied from interface: HasCollectionElementFilter

Returns current value filter. All items in the value will pass this filter.

Specified by:

getCollectionElementFilter in interface HasCollectionElementFilter<T>

Returns:

A non-null filter.

focus

public void focus()

Specified by:

focus in interface com.vaadin.flow.component.Focusable<com.vaadin.flow.component.customfield.CustomField>