Uses of Interface
com.vaadin.flow.signals.Signal

Packages that use Signal

Package	Description
com.vaadin.flow.component
com.vaadin.flow.component.button
com.vaadin.flow.component.datepicker
com.vaadin.flow.component.datetimepicker
com.vaadin.flow.component.dialog
com.vaadin.flow.component.html
com.vaadin.flow.component.icon
com.vaadin.flow.component.internal
com.vaadin.flow.component.login
com.vaadin.flow.component.notification
com.vaadin.flow.component.progressbar
com.vaadin.flow.component.shared
com.vaadin.flow.component.shared.internal
com.vaadin.flow.component.textfield
com.vaadin.flow.component.timepicker
com.vaadin.flow.data.binder
com.vaadin.flow.dom
com.vaadin.flow.dom.impl
com.vaadin.flow.internal.nodefeature
com.vaadin.flow.signals
com.vaadin.flow.signals.impl
com.vaadin.flow.signals.local
com.vaadin.flow.signals.operations
com.vaadin.flow.signals.shared

Uses of Signal in com.vaadin.flow.component

Methods in com.vaadin.flow.component with type parameters of type Signal

Modifier and Type	Method	Description
static <T, S extends Signal<T>, P extends Component & HasComponents> Registration	ComponentEffect.bindChildren(P parent, Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Binds a list signal containing child signals to a parent component using a child component factory.
default <T, S extends Signal<T>> void	HasComponents.bindChildren(Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Binds a list Signal to this component using a child component factory.

Methods in com.vaadin.flow.component with parameters of type Signal

Modifier and Type	Method	Description
static <C extends Component, T> Registration	ComponentEffect.bind(C owner, Signal<T> signal, SerializableBiConsumer<C,T> setter)	Binds a signal's value to a given owner component in a way defined in setter function and creates a Signal effect function executing the setter whenever the signal value changes.
void	SignalPropertySupport.bind(Signal<T> signal)	Binds a Signal's value to this property support and keeps the value synchronized with the signal value while the component is in attached state.
static <T, S extends Signal<T>, P extends Component & HasComponents> Registration	ComponentEffect.bindChildren(P parent, Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Binds a list signal containing child signals to a parent component using a child component factory.
default <T, S extends Signal<T>> void	HasComponents.bindChildren(Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Binds a list Signal to this component using a child component factory.
default void	HasEnabled.bindEnabled(Signal<Boolean> enabledSignal)	Binds a Signal's value to the enabled state of this component and keeps the state synchronized with the signal value while the element is in attached state.
default void	HasValidation.bindErrorMessage(Signal<String> signal)	Binds the component's error message to the provided signal so that the error message is kept in sync with the signal's current value.
default void	HasSize.bindHeight(Signal<String> heightSignal)	Binds a Signal's value to the height of this component and keeps the height synchronized with the signal value while the component is in attached state.
default void	HasHelper.bindHelperText(Signal<String> helperTextSignal)	Binds a signal's value to the component's helper text so that the helper text is updated when the signal's value is updated.
void	Html.bindHtmlContent(Signal<String> htmlSignal)	Binds a Signal's value to this component's HTML content (outer HTML) and keeps the content synchronized with the signal value while the component is attached.
default void	HasValidation.bindInvalid(Signal<Boolean> signal)	Binds the component's invalid state to the provided signal so that the invalid flag is kept in sync with the signal's current value.
default void	HasPlaceholder.bindPlaceholder(Signal<String> placeholderSignal)	Binds a signal's value to the component's placeholder so that the placeholder is updated when the signal's value is updated.
default void	HasValue.bindReadOnly(Signal<Boolean> readOnlySignal)	Binds a Signal's value to the read-only state of this component and keeps the state synchronized with the signal value while the component is in attached state.
default void	HasValueAndElement.bindReadOnly(Signal<Boolean> readOnlySignal)
default void	HasText.bindText(Signal<String> textSignal)	Binds a Signal's value to the text content of this component and keeps the text content synchronized with the signal value while the element is in attached state.
default void	HasTheme.bindThemeName(String name, Signal<Boolean> signal)	Binds the presence of the given theme name to the provided signal so that the theme name is added when the signal value is true and removed when the value is false.
void	AbstractCompositeField.bindValue(Signal<T> valueSignal, SerializableConsumer<T> writeCallback)
void	AbstractField.bindValue(Signal<T> valueSignal, SerializableConsumer<T> writeCallback)
default void	HasValue.bindValue(Signal<V> valueSignal, SerializableConsumer<V> writeCallback)	Binds a Signal's value to the value state of this component and keeps the state synchronized with the signal value while the element is in attached state.
void	Component.bindVisible(Signal<Boolean> visibleSignal)	Binds a Signal's value to the visible property of this component and keeps property synchronized with the signal value while the component is in attached state.
default void	HasSize.bindWidth(Signal<String> widthSignal)	Binds a Signal's value to the width of this component and keeps the width synchronized with the signal value while the component is in attached state.

Constructors in com.vaadin.flow.component with parameters of type Signal

Modifier	Constructor	Description
	Html(Signal<String> htmlSignal)	Creates an instance based on the given HTML fragment signal.

Uses of Signal in com.vaadin.flow.component.button

Methods in com.vaadin.flow.component.button with parameters of type Signal

Modifier and Type	Method	Description
void	Button.bindText(Signal<String> textSignal)

Constructors in com.vaadin.flow.component.button with parameters of type Signal

Modifier	Constructor	Description
	Button(Signal<String> textSignal)	Creates a button with a text bound to a signal.
	Button(Signal<String> textSignal, Component icon)	Creates a button with an icon and a text bound to a signal.
	Button(Signal<String> textSignal, ComponentEventListener<ClickEvent<Button>> clickListener)	Creates a button with a text bound to a signal and a listener for click events.
	Button(Signal<String> textSignal, Component icon, ComponentEventListener<ClickEvent<Button>> clickListener)	Creates a button with an icon, a text bound to a signal, and a listener for click events.

Uses of Signal in com.vaadin.flow.component.datepicker

Methods in com.vaadin.flow.component.datepicker with parameters of type Signal

Modifier and Type	Method	Description
void	DatePicker.bindInitialPosition(Signal<LocalDate> signal)	Binds the given signal to the visible date when there is no value selected.
void	DatePicker.bindMax(Signal<LocalDate> signal)	Binds the given signal to the maximum date allowed to be selected for this field.
void	DatePicker.bindMin(Signal<LocalDate> signal)	Binds the given signal to the minimum date allowed to be selected for this field.

Uses of Signal in com.vaadin.flow.component.datetimepicker

Methods in com.vaadin.flow.component.datetimepicker with parameters of type Signal

Modifier and Type	Method	Description
void	DateTimePicker.bindMax(Signal<LocalDateTime> signal)	Binds the given signal to the maximum date and time allowed to be set for this field.
void	DateTimePicker.bindMin(Signal<LocalDateTime> signal)	Binds the given signal to the minimum date and time allowed to be set for this field.

Uses of Signal in com.vaadin.flow.component.dialog

Methods in com.vaadin.flow.component.dialog with type parameters of type Signal

Modifier and Type	Method	Description
<T, S extends Signal<T>> void	Dialog.bindChildren(Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Dialog does not support binding children directly.

Methods in com.vaadin.flow.component.dialog with parameters of type Signal

Modifier and Type	Method	Description
<T, S extends Signal<T>> void	Dialog.bindChildren(Signal<List<S>> list, SerializableFunction<S,Component> childFactory)	Dialog does not support binding children directly.

Uses of Signal in com.vaadin.flow.component.html

Methods in com.vaadin.flow.component.html with parameters of type Signal

Modifier and Type	Method	Description
void	FieldSet.bindLegendText(Signal<String> legendTextSignal)	Binds a signal's value to the fieldset legend text so that the legend is updated when the signal's value is updated.
void	Param.bindName(Signal<String> nameSignal)	Binds a signal's value to the "name" attribute as a one-way binding, so that the attribute is updated when the signal's value is updated.
void	NativeDetails.bindSummaryText(Signal<String> summarySignal)	Binds a signal's value to the summary text so that the text is updated when the signal's value is updated.
void	Param.bindValue(Signal<String> valueSignal)	Binds a signal's value to the "value" attribute as a one-way binding, so that the attribute is updated when the signal's value is updated.

Constructors in com.vaadin.flow.component.html with parameters of type Signal

Modifier	Constructor	Description
	Abbr(Signal<String> textSignal)	Creates a new abbreviation with its text content bound to the given signal.
	Anchor(DownloadHandler downloadHandler, Signal<String> textSignal)	Creates an anchor component with its text content bound to the given signal and a callback that handles data download from the server to the client when clicking this anchor.
	Anchor(String href, Signal<String> textSignal)	Creates an anchor component with the given href and binds its text content to the given signal.
	Code(Signal<String> textSignal)	Creates a new code component with its text content bound to the given signal.
	Description(Signal<String> textSignal)	Creates a new description with its text content bound to the given signal.
	Div(Signal<String> textSignal)	Creates a new div with its text content bound to the given signal.
	Emphasis(Signal<String> textSignal)	Creates a new emphasis with its text content bound to the given signal.
	FieldSet(Signal<String> textSignal)	Creates a new fieldset with its legend text bound to the given signal.
	H1(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	H2(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	H3(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	H4(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	H5(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	H6(Signal<String> textSignal)	Creates a new heading with its text content bound to the given signal.
	Legend(Signal<String> textSignal)	Creates a new legend with its text content bound to the given signal.
	ListItem(Signal<String> textSignal)	Creates a new list item with its text content bound to the given signal.
	NativeButton(Signal<String> textSignal)	Creates a button with its text content bound to the given signal.
	NativeDetails(Signal<String> summarySignal)	Binds a signal's value to the summary text so that the text is updated when the signal's value is updated.
	NativeDetails(Signal<String> summarySignal, Component content)	Creates a new details using the provided summary signal and content.
	NativeLabel(Signal<String> textSignal)	Creates a new label with its text content bound to the given signal.
	NativeTableCell(Signal<String> textSignal)	Creates a new table cell with its text content bound to the given signal.
	NativeTableHeaderCell(Signal<String> textSignal)	Creates a new header cell with its text content bound to the given signal.
	Paragraph(Signal<String> textSignal)	Creates a new paragraph with its text content bound to the given signal.
	Pre(Signal<String> textSignal)	Creates a new preformatted text component with its text content bound to the given signal.
	Span(Signal<String> textSignal)	Creates a new span with its text content bound to the given signal.

Uses of Signal in com.vaadin.flow.component.icon

Methods in com.vaadin.flow.component.icon with parameters of type Signal

Modifier and Type	Method	Description
void	FontIcon.bindCharCode(Signal<String> signal)	Binds the given signal to the character code of the font icon.
void	Icon.bindIcon(Signal<VaadinIcon> signal)	Binds the given signal to the icon of the component.
void	FontIcon.bindLigature(Signal<String> signal)	Binds the given signal to the ligature name of the font icon.
void	SvgIcon.bindSymbol(Signal<String> signal)	Binds the given signal to the symbol of the SVG icon.

Constructors in com.vaadin.flow.component.icon with parameters of type Signal

Modifier	Constructor	Description
	Icon(Signal<VaadinIcon> iconSignal)	Creates an Icon component that displays the icon from the given signal.
	SvgIcon(DownloadHandler src, Signal<String> symbolSignal)	Creates an SVG icon with the given download handler resource and binds the given signal to the symbol.
	SvgIcon(String src, Signal<String> symbolSignal)	Creates an SVG icon with the given source and binds the given signal to the symbol.

Uses of Signal in com.vaadin.flow.component.internal

Methods in com.vaadin.flow.component.internal with parameters of type Signal

Modifier and Type	Method	Description
void	AbstractFieldSupport.bindValue(Signal<T> valueSignal, SerializableConsumer<T> writeCallback)	Binds a Signal's value to the value state of the field and keeps the state synchronized with the signal value while the element is in attached state.

Uses of Signal in com.vaadin.flow.component.login

Methods in com.vaadin.flow.component.login with parameters of type Signal

Modifier and Type	Method	Description
void	AbstractLogin.bindError(Signal<Boolean> errorSignal)	Binds a given errorSignal to the error state.

Uses of Signal in com.vaadin.flow.component.notification

Methods in com.vaadin.flow.component.notification with parameters of type Signal

Modifier and Type	Method	Description
void	Notification.bindText(Signal<String> textSignal)	Binds the notification text to the given signal.

Constructors in com.vaadin.flow.component.notification with parameters of type Signal

Modifier	Constructor	Description
	Notification(Signal<String> textSignal)	Creates a Notification with the text bound to the given Signal, that does not close automatically.
	Notification(Signal<String> textSignal, int duration)	Creates a Notification with the text bound to the given Signal and duration.
	Notification(Signal<String> textSignal, int duration, Notification.Position position)	Creates a Notification with the text bound to the given Signal, duration and position.
	Notification(Signal<String> textSignal, int duration, Notification.Position position, boolean assertive)	Creates a Notification with the text bound to the given Signal, duration, position and assertive state.

Uses of Signal in com.vaadin.flow.component.progressbar

Methods in com.vaadin.flow.component.progressbar with parameters of type Signal

Modifier and Type	Method	Description
void	ProgressBar.bindMax(Signal<Double> signal)	Binds the given signal to the maximum bound of the progressbar.
void	ProgressBar.bindMin(Signal<Double> signal)	Binds the given signal to the minimum bound of the progressbar.
void	ProgressBar.bindValue(Signal<Double> signal)	Binds the given signal to the value of the progressbar as a one-way binding so that the property is updated when the signal's value is updated.

Uses of Signal in com.vaadin.flow.component.shared

Methods in com.vaadin.flow.component.shared with parameters of type Signal

Modifier and Type	Method	Description
default void	HasClearButton.bindClearButtonVisible(Signal<Boolean> signal)	Binds a given signal to the visibility of the clear button.
default void	HasValidationProperties.bindErrorMessage(Signal<String> signal)	Binds the component's error message to the provided signal so that the error message is kept in sync with the signal's current value.
default void	HasValidationProperties.bindInvalid(Signal<Boolean> signal)	Binds a given boolean signal to the invalid state of the component.
default void	HasThemeVariant.bindThemeVariant(TVariantEnum variant, Signal<Boolean> signal)	Binds the presence of the given theme variant to a Signal.

Uses of Signal in com.vaadin.flow.component.shared.internal

Methods in com.vaadin.flow.component.shared.internal with parameters of type Signal

Modifier and Type	Method	Description
void	OverlayClassListProxy.bind(String className, Signal<Boolean> signal)

Uses of Signal in com.vaadin.flow.component.textfield

Methods in com.vaadin.flow.component.textfield with parameters of type Signal

Modifier and Type	Method	Description
void	IntegerField.bindMax(Signal<Integer> signal)	Binds the given signal to the maximum value for this field.
void	NumberField.bindMax(Signal<Double> signal)	Binds the given signal to the maximum value for this field.
protected final void	AbstractNumberField.bindMaxInternal(Signal<Double> signal)	Internal helper to bind a signal to the maximum value.
void	IntegerField.bindMin(Signal<Integer> signal)	Binds the given signal to the minimum value for this field.
void	NumberField.bindMin(Signal<Double> signal)	Binds the given signal to the minimum value for this field.
protected final void	AbstractNumberField.bindMinInternal(Signal<Double> signal)	Internal helper to bind a signal to the minimum value.

Uses of Signal in com.vaadin.flow.component.timepicker

Methods in com.vaadin.flow.component.timepicker with parameters of type Signal

Modifier and Type	Method	Description
void	TimePicker.bindMax(Signal<LocalTime> signal)	Binds the given signal to the maximum time allowed to be selected for this field.
void	TimePicker.bindMin(Signal<LocalTime> signal)	Binds the given signal to the minimum time allowed to be selected for this field.

Uses of Signal in com.vaadin.flow.data.binder

Methods in com.vaadin.flow.data.binder that return Signal

Modifier and Type	Method	Description
Signal<BinderValidationStatus<BEAN>>	Binder.getValidationStatus()	Gets a read-only Signal emitting BinderValidationStatus changes.

Uses of Signal in com.vaadin.flow.dom

Methods in com.vaadin.flow.dom with parameters of type Signal

Modifier and Type	Method	Description
default void	ClassList.bind(String name, Signal<Boolean> signal)	Binds the presence of the given class name to the provided signal so that the class is added when the signal value is true and removed when the value is false.
static <T> Registration	ElementEffect.bind(Element owner, Signal<T> signal, SerializableBiConsumer<Element,T> setter)	Binds a signal's value to a given owner element in a way defined in setter function and creates a Signal effect function executing the setter whenever the signal value changes.
default Style	Style.bind(String name, Signal<String> signal)	Binds the given style property to the provided string signal and keeps the style property value synchronized with the signal.
default void	ThemeList.bind(String name, Signal<Boolean> signal)	Binds the presence of the given theme name to the provided signal so that the theme name is added when the signal value is true and removed when the value is false.
void	Element.bindAttribute(String attribute, Signal<String> signal)	Binds a Signal's value to a given attribute and keeps the attribute value synchronized with the signal value while the element is in attached state.
void	ElementStateProvider.bindAttributeSignal(Element owner, String attribute, Signal<String> signal)	Binds the given signal to the given attribute.
void	Element.bindEnabled(Signal<Boolean> enabledSignal)	Binds a Signal's value to the enabled state of this element and keeps the state synchronized with the signal value while the element is in attached state.
void	Element.bindProperty(String name, Signal<?> signal)	Binds a Signal's value to the given property and keeps the property value synchronized with the signal value while the element is in attached state.
void	ElementStateProvider.bindPropertySignal(Element owner, String name, Signal<?> signal)	Binds the given signal to the given property.
void	Element.bindText(Signal<String> signal)	Binds a Signal's value to the text content of this element and keeps the text content synchronized with the signal value while the element is in attached state.
void	Element.bindVisible(Signal<Boolean> visibleSignal)	Binds a Signal's value to the visible property of this element and keeps property synchronized with the signal value while the element is in attached state.
void	ElementStateProvider.bindVisibleSignal(Element owner, Signal<Boolean> signal)	Binds the given signal to the visible property.

Uses of Signal in com.vaadin.flow.dom.impl

Methods in com.vaadin.flow.dom.impl with parameters of type Signal

Modifier and Type	Method	Description
Style	BasicElementStyle.bind(String name, Signal<String> signal)
void	ImmutableClassList.bind(String name, Signal<Boolean> signal)	Binds the presence of the given class name to the provided signal so that the class is added when the signal value is true and removed when the value is false.
Style	ImmutableEmptyStyle.bind(String name, Signal<String> signal)	Binds the given style property to the provided string signal and keeps the style property value synchronized with the signal.
void	ThemeListImpl.bind(String name, Signal<Boolean> signal)
void	AbstractTextElementStateProvider.bindAttributeSignal(Element owner, String attribute, Signal<String> signal)
void	BasicElementStateProvider.bindAttributeSignal(Element owner, String attribute, Signal<String> signal)
void	ShadowRootStateProvider.bindAttributeSignal(Element owner, String attribute, Signal<String> signal)
void	AbstractTextElementStateProvider.bindPropertySignal(Element owner, String name, Signal<?> signal)
void	BasicElementStateProvider.bindPropertySignal(Element owner, String name, Signal<?> signal)
void	ShadowRootStateProvider.bindPropertySignal(Element owner, String name, Signal<?> signal)
void	AbstractTextElementStateProvider.bindVisibleSignal(Element owner, Signal<Boolean> signal)
void	BasicElementStateProvider.bindVisibleSignal(Element owner, Signal<Boolean> signal)
void	ShadowRootStateProvider.bindVisibleSignal(Element owner, Signal<Boolean> signal)

Uses of Signal in com.vaadin.flow.internal.nodefeature

Methods in com.vaadin.flow.internal.nodefeature that return Signal

Modifier and Type	Method	Description
<T> Signal<T>	SignalBindingFeature.getSignal(String key)	Gets the signal bound to the given key.
Signal<?>	NodeMap.SignalBinding.signal()	Returns the value of the signal record component.

Methods in com.vaadin.flow.internal.nodefeature with parameters of type Signal

Modifier and Type	Method	Description
void	AbstractPropertyMap.bindSignal(Element owner, String name, Signal<?> signal)	Binds the given signal to the given property.
void	ElementAttributeMap.bindSignal(Element owner, String attribute, Signal<String> signal)	Binds the given signal to the given attribute.
protected <T> void	NodeMap.bindSignal(Element owner, String key, Signal<T> signal, SerializableBiConsumer<Element,T> setter)	Binds the given signal to the given key.
void	ElementData.bindVisibleSignal(Element owner, Signal<Boolean> signal)	Binds the given signal to the visible property.
void	SignalBindingFeature.setBinding(String key, Registration registration, Signal<?> signal)	Sets a binding for the given key.
void	SignalBindingFeature.setBinding(String key, Registration registration, Signal<?> signal, SerializableConsumer<?> writeCallback)	Sets a binding for the given key with a write callback.
void	TextBindingFeature.setBinding(Registration registration, Signal<String> textSignal)

Constructors in com.vaadin.flow.internal.nodefeature with parameters of type Signal

Modifier	Constructor	Description
	SignalBinding(Signal<?> signal, Registration registration, Serializable value)	Creates an instance of a SignalBinding record class.

Uses of Signal in com.vaadin.flow.signals

Subinterfaces of Signal in com.vaadin.flow.signals

Modifier and Type	Interface	Description
interface	WritableSignal<T>	A signal to which a new value can be directly written.

Methods in com.vaadin.flow.signals that return Signal

Modifier and Type	Method	Description
default Signal<T>	WritableSignal.asReadonly()	Wraps this signal to not accept changes.
static <T> Signal<T>	Signal.computed(SignalComputation<T> computation)	Creates a new computed signal with the given computation callback.
default <C> Signal<C>	Signal.map(SignalMapper<T,C> mapper)	Creates a simple computed signal based on a mapper function that is passed the value of this signal.
static Signal<Boolean>	Signal.not(Signal<Boolean> signal)	Crates a new computed signal containing the negation of the provided boolean-valued signal.

Methods in com.vaadin.flow.signals with parameters of type Signal

Modifier and Type	Method	Description
static Signal<Boolean>	Signal.not(Signal<Boolean> signal)	Crates a new computed signal containing the negation of the provided boolean-valued signal.

Uses of Signal in com.vaadin.flow.signals.impl

Classes in com.vaadin.flow.signals.impl that implement Signal

Modifier and Type	Class	Description
class	ComputedSignal<T>	A signal with a value that is computed based on the value of other signals.
class	MappedModifySignal<P,C>	A writable signal that provides a two-way mapped view of a ValueSignal using in-place modification.
class	MappedWritableSignal<P,C>	A writable signal that provides a two-way mapped view of another writable signal.

Uses of Signal in com.vaadin.flow.signals.local

Classes in com.vaadin.flow.signals.local that implement Signal

Modifier and Type	Class	Description
class	AbstractLocalSignal<T>	Base class for local signals providing shared listener notification, usage tracking, and value access logic.
class	ListSignal<T>	A local list signal that holds a list of writable signals, enabling per-entry reactivity.
class	ValueSignal<T>	A local writable signal that holds a reference to an object.

Uses of Signal in com.vaadin.flow.signals.operations

Classes in com.vaadin.flow.signals.operations with type parameters of type Signal

Modifier and Type	Class	Description
class	InsertOperation<T extends Signal<?>>	An operation that inserts a new child signal into a list or map.

Uses of Signal in com.vaadin.flow.signals.shared

Classes in com.vaadin.flow.signals.shared that implement Signal

Modifier and Type	Class	Description
class	AbstractSignal<T>	Base type for full-featured signals that are backed by a transactional signal tree.
class	SharedListSignal<T>	A signal containing a list of values.
class	SharedMapSignal<T>	A signal containing a map of values with string keys.
class	SharedNodeSignal	A signal representing a node in a tree structure.
class	SharedNumberSignal	A signal containing a numeric value.
class	SharedValueSignal<T>	A signal containing a value.

Methods in com.vaadin.flow.signals.shared that return Signal

Modifier and Type	Method	Description
<C> Signal<C>	SharedNumberSignal.mapIntValue(IntMapper<C> mapper)	Creates a computed signal based on an integer mapper function that is passed the value of this signal.