Package io.jmix.flowui.data.binding.impl

Class SliderValueBinding<V>

java.lang.Object

io.jmix.flowui.data.binding.impl.AbstractValueBinding<V>

io.jmix.flowui.data.binding.impl.SliderValueBinding<V>

Type Parameters:

V - the value type

All Implemented Interfaces:

JmixBinding, SuspendableBinding, ValueBinding<V>

@Component("flowui_SliderValueBinding")
@Scope("prototype")
public class SliderValueBinding<V>
extends AbstractValueBinding<V>

Implementation of ValueBinding for working with slider components.

A slider cannot represent an absent value and falls back to its minimum value, so the fallback is not propagated to the value source.

Field Summary

Fields

Modifier and Type	Field	Description
protected Runnable	componentValueSetHandler

Fields inherited from class io.jmix.flowui.data.binding.impl.AbstractValueBinding

accessManager, applicationContext, component, componentValueChangeRegistration, messageTools, metadataTools, suspended, validationProviders, validator, valueSource, valueSourceInstanceChangeRegistration, valueSourceStateChangeRegistration, valueSourceValueChangeRegistration

Constructor Summary

Constructors

Constructor	Description
SliderValueBinding(ValueSource<V> valueSource, com.vaadin.flow.component.HasValue<?,V> component)

Method Summary

Modifier and Type	Method	Description
void	clearValue(Runnable clearComponentValueAction)	Clears the value of the component and of the value source.
protected @Nullable V	getComponentValue()
protected void	onComponentValueChange()
protected void	setComponentValue(@Nullable V value)
void	setComponentValueSetHandler(@Nullable Runnable componentValueSetHandler)	Sets a handler invoked after a value source value has been set to the component.
void	writeComponentValueToSource()	Writes the current component value to the value source.

Methods inherited from class io.jmix.flowui.data.binding.impl.AbstractValueBinding

activate, addComponentValueChangeListener, bind, getComponent, getValueSource, initBeanValidator, initCustomValidators, initRequired, onValueSourceInstanceChanged, onValueSourceStateChanged, onValueSourceValueChange, resetRequiredIfAttributeFiltered, resume, setAccessManager, setApplicationContext, setMessageTools, setMetadataTools, setValidationProviders, setValidator, setValueToSource, suspend, suspended, unbind

Methods inherited from class java.lang.Object

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

Field Details

componentValueSetHandler

protected Runnable componentValueSetHandler

Constructor Details

SliderValueBinding

public SliderValueBinding(ValueSource<V> valueSource,
 com.vaadin.flow.component.HasValue<?,V> component)

Method Details

setComponentValueSetHandler

public void setComponentValueSetHandler(@Nullable Runnable componentValueSetHandler)

Sets a handler invoked after a value source value has been set to the component.

The component substitutes an absent value with its minimum value, so a value source value can change the empty state of the component without changing the component value, i.e. without firing a value change event.

Parameters:

componentValueSetHandler - the handler to set, or null to remove it

onComponentValueChange

protected void onComponentValueChange()

Overrides:

onComponentValueChange in class AbstractValueBinding<V>

writeComponentValueToSource

public void writeComponentValueToSource()

Writes the current component value to the value source.

The component cannot represent an absent value and shows its minimum value instead, so setting the value the component already shows fires no value change event, and the binding has nothing to react to, although the value source value becomes present.

clearValue

public void clearValue(Runnable clearComponentValueAction)

Clears the value of the component and of the value source.

The component cannot represent an absent value and falls back to its minimum value, so the propagation to the value source is suspended while the component is being cleared and the value source receives null instead of that fallback.

Parameters:

clearComponentValueAction - action that clears the component value

getComponentValue

protected @Nullable V getComponentValue()

Specified by:

getComponentValue in class AbstractValueBinding<V>

setComponentValue

protected void setComponentValue(@Nullable V value)

Specified by:

setComponentValue in class AbstractValueBinding<V>