Package org.vaadin.miki.superfields.itemgrid

Class ItemGrid<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<T>

org.vaadin.miki.superfields.itemgrid.ItemGrid<T>

Type Parameters:

T - Type of item stored in the grid.

All Implemented Interfaces:

com.vaadin.flow.component.AttachNotifier, com.vaadin.flow.component.BlurNotifier<com.vaadin.flow.component.customfield.CustomField<T>>, com.vaadin.flow.component.DetachNotifier, com.vaadin.flow.component.Focusable<com.vaadin.flow.component.customfield.CustomField<T>>, com.vaadin.flow.component.FocusNotifier<com.vaadin.flow.component.customfield.CustomField<T>>, 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.HasTheme, com.vaadin.flow.component.HasValidation, com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<T>,T>,T>, com.vaadin.flow.component.HasValueAndElement<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<T>,T>,T>, com.vaadin.flow.component.shared.HasTooltip, com.vaadin.flow.component.shared.HasValidationProperties, com.vaadin.flow.data.binder.HasItems<T>, Serializable, HasHelperPositionable, HasId, WithHelperMixin<ItemGrid<T>>, WithHelperPositionableMixin<ItemGrid<T>>, WithIdMixin<ItemGrid<T>>, WithItemsMixin<T,ItemGrid<T>>, WithValueMixin<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<T>,T>,T,ItemGrid<T>>

@Tag("item-grid")
public class ItemGrid<T>
extends com.vaadin.flow.component.customfield.CustomField<T>
implements com.vaadin.flow.data.binder.HasItems<T>, com.vaadin.flow.component.HasStyle, WithItemsMixin<T,ItemGrid<T>>, WithIdMixin<ItemGrid<T>>, WithHelperMixin<ItemGrid<T>>, WithHelperPositionableMixin<ItemGrid<T>>, WithValueMixin<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<com.vaadin.flow.component.customfield.CustomField<T>,T>,T,ItemGrid<T>>

Grid of items, with defined number of columns. Each cell in the grid corresponds to a single element from the underlying collection of data. Note: currently this is not lazy-loading the data and not reacting to changes in the underlying data set.

Since:

2020-04-14

Author:

miki

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 extends Object>

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>

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

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

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_COLUMN_COUNT	Default number of columns.
static final String	DEFAULT_SELECTED_ITEM_CLASS_NAME	Style that by default indicates a selected item.

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

HELPER_ABOVE_THEME_VARIANT

Constructor Summary

Constructors

Constructor	Description
ItemGrid(CellGenerator<T> generator, CellSelectionHandler<T> handler, T... items)	Creates the component with given CellGenerator, CellSelectionHandler and items.
ItemGrid(CellGenerator<T> generator, T... items)	Creates the component with given items and CellGenerator, but with default CellSelectionHandler.
ItemGrid(T... items)	Creates the component with given items, using default CellGenerator and CellSelectionHandler.
ItemGrid(T defaultValue, Supplier<C> mainContainerSupplier, CellGenerator<T> generator, CellSelectionHandler<T> handler, T... items)	Creates the component with given CellGenerator, CellSelectionHandler and items, overriding default (empty) value.
ItemGrid(T defaultValue, CellGenerator<T> generator, CellSelectionHandler<T> handler, T... items)	Creates the component with given CellGenerator, CellSelectionHandler and items, overriding default (empty) value.

Method Summary

Modifier and Type	Method	Description
boolean	arePaddingCellsClickable()	Checks whether the padding cells (if any present) are clickable.
protected final CellInformation<T>	buildPaddingCell(int row, int column)
protected final CellInformation<T>	buildValueCell(T item, int row, int column)
protected void	clickCell(CellInformation<T> information)	Reacts to cell being clicked in the browser.
static <V> com.vaadin.flow.component.Component	defaultCellGenerator(V item, int row, int col)	Default CellGenerator.
static <V> void	defaultCellSelectionHandler(CellSelectionEvent<V> event)	Default CellSelectionHandler.
static com.vaadin.flow.component.html.Div	defaultMainContainerSupplier()	Default supplier for the main layout of the grid.
static com.vaadin.flow.component.html.Div	defaultRowComponentGenerator(int rowNumber)	Default RowComponentGenerator.
protected T	generateModelValue()
Stream<com.vaadin.flow.component.Component>	getCellComponents()	Returns a Stream of all Components in the cells.
CellGenerator<T>	getCellGenerator()	Returns current CellGenerator used to generate cells.
List<CellInformation<T>>	getCellInformation()	Returns a list with information about each cell.
Optional<CellInformation<T>>	getCellInformation(int row, int column)	Returns CellInformation that corresponds to the cell of given coordinates.
Optional<CellInformation<T>>	getCellInformation(T value)	Returns CellInformation that corresponds to the provided value.
CellSelectionHandler<T>	getCellSelectionHandler()	Returns current CellSelectionHandler used to react to selection changes.
List<CellInformation<T>>	getColumnCellInformation(int column)	Returns a list with CellInformation for each cell in given column.
int	getColumnCount()	Returns the current number of columns.
CellGenerator<T>	getPaddingCellGenerator()	Returns the cell generator used for constructing padding cells.
List<CellInformation<T>>	getRowCellInformation(int row)	Returns a list with CellInformation for each cell in given row.
RowComponentGenerator<?>	getRowComponentGenerator()	Returns current RowComponentGenerator.
long	getRowCount()	Returns the number of rows (even incomplete) currently in the grid.
RowPaddingStrategy	getRowPaddingStrategy()	Returns current RowPaddingStrategy.
Optional<CellInformation<T>>	getSelectedCellInformation()	Returns CellInformation about currently selected cell.
protected void	registerClickEvents(CellInformation<T> information)	Adds a click listener to the dom element of the Component inside given CellInformation.
protected final void	repaintAllItems()	Repaints all current items.
protected void	repaintAllItems(Collection<T> itemCollection)	Repaints all items in the collection.
void	setCellGenerator(CellGenerator<T> cellGenerator)	Sets new CellGenerator.
void	setCellSelectionHandler(CellSelectionHandler<T> cellSelectionHandler)	Sets new CellSelectionHandler.
void	setColumnCount(int columnCount)	Sets the new number of columns.
void	setItems(Collection<T> collection)
void	setPaddingCellGenerator(CellGenerator<T> paddingCellGenerator)	Sets cell generator for padding cells.
void	setPaddingCellsClickable(boolean paddingCellsClickable)	Enables or disables click events on padding cells.
protected void	setPresentationValue(T t)
void	setRowComponentGenerator(RowComponentGenerator<?> rowComponentGenerator)	Sets new RowComponentGenerator invoked every time a new row for grid cells is needed.
void	setRowPaddingStrategy(RowPaddingStrategy rowPaddingStrategy)	Sets new RowPaddingStrategy.
int	size()	Returns the number of cells.
ItemGrid<T>	withCellGenerator(CellGenerator<T> generator)	Chains setCellGenerator(CellGenerator) and returns itself.
ItemGrid<T>	withCellSelectionHandler(CellSelectionHandler<T> handler)	Chains setCellSelectionHandler(CellSelectionHandler) and returns itself.
ItemGrid<T>	withColumnCount(int columnCount)	Chains setColumnCount(int) and returns itself.
ItemGrid<T>	withPaddingCellGenerator(CellGenerator<T> paddingCellGenerator)	Chains setPaddingCellGenerator(CellGenerator) and returns itself.
ItemGrid<T>	withPaddingCellsClickable(boolean paddingCellsClickable)	Chains setPaddingCellsClickable(boolean) and returns itself.
ItemGrid<T>	withRowComponentGenerator(RowComponentGenerator<?> generator)	Chains setRowComponentGenerator(RowComponentGenerator) and returns itself.
ItemGrid<T>	withRowPaddingStrategy(RowPaddingStrategy rowPaddingStrategy)	Chains setRowPaddingStrategy(RowPaddingStrategy) and returns itself.

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

add, addThemeVariants, getLabel, onAttach, remove, removeThemeVariants, setLabel, updateValue

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, findAncestor, fireEvent, from, get, getChildren, getElement, getEventBus, getId, getListeners, getLocale, getParent, getTranslation, getTranslation, getTranslation, getTranslation, getTranslation, getTranslation, getUI, hasListener, isAttached, isTemplateMapped, isVisible, onDetach, onEnabledStateChanged, removeFromParent, scrollIntoView, scrollIntoView, 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 com.vaadin.flow.component.AttachNotifier

addAttachListener

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

addBlurListener

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

addDetachListener

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

addFocusShortcut, blur, focus, getTabIndex, setTabIndex

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

addFocusListener

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

getElement

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

isEnabled, setEnabled

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

getHelperComponent, getHelperText, setHelperComponent, setHelperText

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

isHelperAbove, setHelperAbove, setHelperAbove, setHelperBelow

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

getId, setId

Methods inherited from interface com.vaadin.flow.data.binder.HasItems

setItems, setItems

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

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.HasStyle

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

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

addThemeName, addThemeNames, getThemeName, getThemeNames, hasThemeName, removeThemeName, removeThemeNames, setThemeName, setThemeName

Methods inherited from interface com.vaadin.flow.component.shared.HasTooltip

getTooltip, setTooltipText

Methods inherited from interface com.vaadin.flow.component.shared.HasValidationProperties

getErrorMessage, isInvalid, setErrorMessage, setInvalid

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

addValueChangeListener, clear, getEmptyValue, getOptionalValue, getValue, isEmpty, setValue

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

isReadOnly, isRequiredIndicatorVisible, setReadOnly, setRequiredIndicatorVisible

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

withHelperComponent, withHelperText

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

withHelperAbove, withHelperAbove, withHelperBelow

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

withId

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

withItems, withItems, withItems

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

withValue

Field Details

DEFAULT_COLUMN_COUNT

public static final int DEFAULT_COLUMN_COUNT

Default number of columns.

See Also:

• Constant Field Values

DEFAULT_SELECTED_ITEM_CLASS_NAME

public static final String DEFAULT_SELECTED_ITEM_CLASS_NAME

Style that by default indicates a selected item. This is only needed when default setCellSelectionHandler(CellSelectionHandler) is used.

See Also:

• Constant Field Values

Constructor Details

ItemGrid

@SafeVarargs
public ItemGrid(T... items)

Creates the component with given items, using default CellGenerator and CellSelectionHandler.

Parameters:

items - Items to add to the component.

ItemGrid

@SafeVarargs
public ItemGrid(CellGenerator<T> generator,
 T... items)

Creates the component with given items and CellGenerator, but with default CellSelectionHandler.

Parameters:

generator - CellGenerator to use.

items - Items to add to the component.

ItemGrid

@SafeVarargs
public ItemGrid(CellGenerator<T> generator,
 CellSelectionHandler<T> handler,
 T... items)

Creates the component with given CellGenerator, CellSelectionHandler and items.

Parameters:

generator - CellGenerator to use.

handler - CellSelectionHandler to use.

items - Items to add to the component.

ItemGrid

@SafeVarargs
public ItemGrid(T defaultValue,
 CellGenerator<T> generator,
 CellSelectionHandler<T> handler,
 T... items)

Creates the component with given CellGenerator, CellSelectionHandler and items, overriding default (empty) value.

Parameters:

defaultValue - Default (empty) value.

generator - CellGenerator to use.

handler - CellSelectionHandler to use.

items - Items to add to the component.

ItemGrid

@SafeVarargs
public ItemGrid(T defaultValue,
 Supplier<C> mainContainerSupplier,
 CellGenerator<T> generator,
 CellSelectionHandler<T> handler,
 T... items)

Creates the component with given CellGenerator, CellSelectionHandler and items, overriding default (empty) value.

Type Parameters:

C - Type parameter to ensure mainContainerSupplier provides a Component that also HasComponents.

Parameters:

defaultValue - Default (empty) value.

mainContainerSupplier - Method to generate main container component.

generator - CellGenerator to use.

handler - CellSelectionHandler to use.

items - Items to add to the component.

Method Details

defaultCellSelectionHandler

public static <V> void defaultCellSelectionHandler(CellSelectionEvent<V> event)

Default CellSelectionHandler. It adds or removes DEFAULT_SELECTED_ITEM_CLASS_NAME to the element of the component.

Type Parameters:

V - Value type.

Parameters:

event - Event.

defaultMainContainerSupplier

public static com.vaadin.flow.component.html.Div defaultMainContainerSupplier()

Default supplier for the main layout of the grid.

Returns:

A Div.

defaultCellGenerator

public static <V>
com.vaadin.flow.component.Component defaultCellGenerator(V item,
 int row,
 int col)

Default CellGenerator. It produces a Span with String.valueOf(Object) called on item.

Type Parameters:

V - Item type.

Parameters:

item - Item to generate component for.

row - Row in the grid.

col - Column in the grid.

Returns:

A Span: <span>item</span>.

defaultRowComponentGenerator

public static com.vaadin.flow.component.html.Div defaultRowComponentGenerator(int rowNumber)

Default RowComponentGenerator. It produces a Div.

Parameters:

rowNumber - Number of the row to create.

Returns:

A Div.

repaintAllItems

protected final void repaintAllItems()

Repaints all current items.

buildPaddingCell

protected final CellInformation<T> buildPaddingCell(int row,
 int column)

buildValueCell

protected final CellInformation<T> buildValueCell(T item,
 int row,
 int column)

repaintAllItems

protected void repaintAllItems(Collection<T> itemCollection)

Repaints all items in the collection.

Parameters:

itemCollection - Collection with items to repaint.

registerClickEvents

protected void registerClickEvents(CellInformation<T> information)

Adds a click listener to the dom element of the Component inside given CellInformation. This click listener will select or deselect a cell and update the value of this grid. Note: when overriding this method, please remember to call super.

Parameters:

information - Information. Never null.

clickCell

protected void clickCell(CellInformation<T> information)

Reacts to cell being clicked in the browser. This method is invoked for padding cells if arePaddingCellsClickable() is true.

Parameters:

information - Information about the clicked cell.

generateModelValue

protected T generateModelValue()

Specified by:

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

setPresentationValue

protected void setPresentationValue(T t)

Specified by:

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

setCellGenerator

public void setCellGenerator(CellGenerator<T> cellGenerator)

Sets new CellGenerator. Repaints all items.

Parameters:

cellGenerator - Cell generator. If null is passed, defaultCellGenerator(Object, int, int) will be used.

getCellGenerator

public CellGenerator<T> getCellGenerator()

Returns current CellGenerator used to generate cells.

Returns:

A CellGenerator. Never null.

withCellGenerator

public ItemGrid<T> withCellGenerator(CellGenerator<T> generator)

Chains setCellGenerator(CellGenerator) and returns itself.

Parameters:

generator - CellGenerator to use.

Returns:

This.

See Also:

• setCellGenerator(CellGenerator)

setCellSelectionHandler

public void setCellSelectionHandler(CellSelectionHandler<T> cellSelectionHandler)

Sets new CellSelectionHandler. Repaints all items.

Parameters:

cellSelectionHandler - Cell selection handler. If null is passed, defaultCellSelectionHandler(CellSelectionEvent) will be used.

getCellSelectionHandler

public CellSelectionHandler<T> getCellSelectionHandler()

Returns current CellSelectionHandler used to react to selection changes.

Returns:

A CellSelectionHandler. Never null.

withCellSelectionHandler

public ItemGrid<T> withCellSelectionHandler(CellSelectionHandler<T> handler)

Chains setCellSelectionHandler(CellSelectionHandler) and returns itself.

Parameters:

handler - CellSelectionHandler to use.

Returns:

This.

See Also:

• setCellSelectionHandler(CellSelectionHandler)

getRowCount

public long getRowCount()

Returns the number of rows (even incomplete) currently in the grid.

Returns:

The number of rows. This will change if new items are added or the number of columns changes.

See Also:

• setItems(Collection)
• HasItems.setItems(Object[])
• HasItems.setItems(Stream)
• setColumnCount(int)

getColumnCount

public int getColumnCount()

Returns the current number of columns.

Returns:

The number of columns in the grid.

setColumnCount

public void setColumnCount(int columnCount)

Sets the new number of columns. Repaints all items.

Parameters:

columnCount - Number of columns. Values less than 1 are replaced with 1 instead,

withColumnCount

public ItemGrid<T> withColumnCount(int columnCount)

Chains setColumnCount(int) and returns itself.

Parameters:

columnCount - Number of columns.

Returns:

This.

See Also:

• setColumnCount(int)

setItems

public void setItems(Collection<T> collection)

Specified by:

setItems in interface com.vaadin.flow.data.binder.HasItems<T>

size

public int size()

Returns the number of cells.

Returns:

Number of cells.

getCellInformation

public List<CellInformation<T>> getCellInformation()

Returns a list with information about each cell.

Returns:

A list with CellInformation. Never null. Changes to the resulting object do not affect the grid.

getSelectedCellInformation

public Optional<CellInformation<T>> getSelectedCellInformation()

Returns CellInformation about currently selected cell.

Returns:

A CellInformation, if any cell is currently selected.

getCellInformation

public Optional<CellInformation<T>> getCellInformation(T value)

Returns CellInformation that corresponds to the provided value.

Parameters:

value - A value to look for.

Returns:

A CellInformation, if a cell corresponding to the provided value is available.

See Also:

• HasItems.setItems(Object[])
• setItems(Collection)
• HasItems.setItems(Stream)

getCellInformation

public Optional<CellInformation<T>> getCellInformation(int row,
 int column)

Returns CellInformation that corresponds to the cell of given coordinates.

Parameters:

row - Row number (0-based).

column - Column number (0-based).

Returns:

A CellInformation, if a cell corresponding to the given coordinates is available.

See Also:

• setColumnCount(int)
• getColumnCount()
• getRowCount()

getRowCellInformation

public List<CellInformation<T>> getRowCellInformation(int row)

Returns a list with CellInformation for each cell in given row.

Parameters:

row - Row number, 0-based.

Returns:

An unmodifiable list. May be empty.

getColumnCellInformation

public List<CellInformation<T>> getColumnCellInformation(int column)

Returns a list with CellInformation for each cell in given column.

Parameters:

column - Column number, 0-based.

Returns:

An unmodifiable list. May be empty.

getCellComponents

public Stream<com.vaadin.flow.component.Component> getCellComponents()

Returns a Stream of all Components in the cells.

Returns:

A Stream. Never null.

See Also:

• setCellGenerator(CellGenerator)

setRowComponentGenerator

public void setRowComponentGenerator(RowComponentGenerator<?> rowComponentGenerator)

Sets new RowComponentGenerator invoked every time a new row for grid cells is needed.

Parameters:

rowComponentGenerator - RowComponentGenerator to use. If null is passed, then defaultRowComponentGenerator(int) will be used.

getRowComponentGenerator

public RowComponentGenerator<?> getRowComponentGenerator()

Returns current RowComponentGenerator.

Returns:

A RowComponentGenerator. Never null.

withRowComponentGenerator

public ItemGrid<T> withRowComponentGenerator(RowComponentGenerator<?> generator)

Chains setRowComponentGenerator(RowComponentGenerator) and returns itself.

Parameters:

generator - A RowComponentGenerator to use.

Returns:

This.

See Also:

• setRowComponentGenerator(RowComponentGenerator)

setRowPaddingStrategy

public void setRowPaddingStrategy(RowPaddingStrategy rowPaddingStrategy)

Sets new RowPaddingStrategy. Repaints all items.

Parameters:

rowPaddingStrategy - An implementation of RowPaddingStrategy. If null is passed, RowPaddingStrategies.NO_PADDING will be used.

See Also:

• RowPaddingStrategies

getRowPaddingStrategy

public RowPaddingStrategy getRowPaddingStrategy()

Returns current RowPaddingStrategy.

Returns:

A RowPaddingStrategy currently assigned to this object. Defaults to RowPaddingStrategies.NO_PADDING.

See Also:

• RowPaddingStrategies

withRowPaddingStrategy

public ItemGrid<T> withRowPaddingStrategy(RowPaddingStrategy rowPaddingStrategy)

Chains setRowPaddingStrategy(RowPaddingStrategy) and returns itself.

Parameters:

rowPaddingStrategy - A RowPaddingStrategy to use.

Returns:

This.

See Also:

• setRowPaddingStrategy(RowPaddingStrategy)
• RowPaddingStrategies

getPaddingCellGenerator

public CellGenerator<T> getPaddingCellGenerator()

Returns the cell generator used for constructing padding cells. If none present, getCellGenerator() will be used.

Returns:

A generator for padding cells. Is used only when there is some RowPaddingStrategy set.

See Also:

• setRowPaddingStrategy(RowPaddingStrategy)

setPaddingCellGenerator

public void setPaddingCellGenerator(CellGenerator<T> paddingCellGenerator)

Sets cell generator for padding cells. If null is passed, getCellGenerator() will be used.

Parameters:

paddingCellGenerator - A generator for padding cells. Is used only when there is some RowPaddingStrategy set.

See Also:

• setRowPaddingStrategy(RowPaddingStrategy)

withPaddingCellGenerator

public ItemGrid<T> withPaddingCellGenerator(CellGenerator<T> paddingCellGenerator)

Chains setPaddingCellGenerator(CellGenerator) and returns itself.

Parameters:

paddingCellGenerator - A generator for padding cells.

Returns:

This.

See Also:

• setPaddingCellGenerator(CellGenerator)

arePaddingCellsClickable

public boolean arePaddingCellsClickable()

Checks whether the padding cells (if any present) are clickable.

Returns:

Whether or not padding cells can be clicked. Defaults to false.

setPaddingCellsClickable

public void setPaddingCellsClickable(boolean paddingCellsClickable)

Enables or disables click events on padding cells. If true, clicking a padding cell turns value to null.

Parameters:

paddingCellsClickable - Whether or not to allow padding cells to react to clicks.

withPaddingCellsClickable

public ItemGrid<T> withPaddingCellsClickable(boolean paddingCellsClickable)

Chains setPaddingCellsClickable(boolean) and returns itself.

Parameters:

paddingCellsClickable - Whether or not to allow padding cells to react to clicks.

Returns:

This.

See Also:

• setPaddingCellsClickable(boolean)