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com.vaadin.flow.component.internal.
Class AbstractFieldSupport<C extends Component & HasValue<AbstractField.ComponentValueChangeEvent<C,T>,T>,T>
java.lang.Object
com.vaadin.flow.component.internal.AbstractFieldSupport<C,T>
Type Parameters:
C - the value change source type
T - the value type
All Implemented Interfaces:
public class AbstractFieldSupport<C extends Component & HasValue<AbstractField.ComponentValueChangeEvent<C,T>,T>,T>
extends Object
implements Serializable
Encapsulates all the logic required for a typical field implementation. This
reduces the risk of implementing logic changes in AbstractField but
not in AbstractCompositeField, or vice versa.
For internal use only. May be renamed or removed in a future release.
Since:
1.0
Author:
Vaadin Ltd
See Also:
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Constructor Summary
ConstructorsConstructorDescriptionAbstractFieldSupport(C component, T defaultValue, SerializableBiPredicate<T, T> valueEquals, SerializableConsumer<T> setPresentationValue) Creates a new field support.
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Method Summary
Modifier and TypeMethodDescriptionaddValueChangeListener(HasValue.ValueChangeListener<? super AbstractField.ComponentValueChangeEvent<C, T>> listener) Delegate method for
HasValue.addValueChangeListener(com.vaadin.flow.component.HasValue.ValueChangeListener)Delegate method for
HasValue.getEmptyValue().getValue()Delegate method for
HasValue.getValue().voidsetModelValue(T newModelValue, boolean fromClient) Delegate method corresponding to
AbstractField.setModelValue(Object, boolean).voidDelegate method for
HasValue.setValue(Object).booleanvalueEquals(T value1, T value2) Delegate method corresponding to
AbstractField.valueEquals(Object, Object).
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Constructor Details
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AbstractFieldSupport
public AbstractFieldSupport(C component, T defaultValue, SerializableBiPredicate<T, T> valueEquals, SerializableConsumer<T> setPresentationValue) Creates a new field support.
Parameters:
component- the owning field componentdefaultValue- the default field valuevalueEquals- a callback for comparing valuessetPresentationValue- a callback for setting presentation values
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Method Details
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addValueChangeListener
public Registration addValueChangeListener(HasValue.ValueChangeListener<? super AbstractField.ComponentValueChangeEvent<C, T>> listener) Delegate method for
HasValue.addValueChangeListener(com.vaadin.flow.component.HasValue.ValueChangeListener)Parameters:
listener- the listener to addReturns:
a registration for the listener
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getValue
Delegate method for
HasValue.getValue().Returns:
the field value
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getEmptyValue
Delegate method for
HasValue.getEmptyValue().Returns:
the empty value of this field
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setValue
Delegate method for
HasValue.setValue(Object).Parameters:
value- the value to set -
valueEquals
Delegate method corresponding to
AbstractField.valueEquals(Object, Object).Parameters:
value1- the first instancevalue2- the second instanceReturns:
trueif the instances are equal; otherwisefalse -
setModelValue
Delegate method corresponding to
AbstractField.setModelValue(Object, boolean).Parameters:
newModelValue- the new internal value to usefromClient-trueif the new value originates from the client; otherwisefalse
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