Package com.vaadin.flow.component.trigger.internal

Class PropertyInput<T>

java.lang.Object

com.vaadin.flow.component.trigger.internal.Action.Input<T>

com.vaadin.flow.component.trigger.internal.PropertyInput<T>

Type Parameters:

T - the runtime type of the value produced

All Implemented Interfaces:

Serializable

public class PropertyInput<T>
extends Action.Input<T>

Reads a JavaScript property from a target component's root element at the moment a trigger fires.

Common targets and properties:

• TextField.value → new PropertyInput<>(textField, "value", String.class)
• Checkbox.checked → new PropertyInput<>(checkbox, "checked", Boolean.class)

For internal use only. May be renamed or removed in a future release.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
PropertyInput(Component target, String propertyName, Class<T> valueType)	Creates a property input that reads the given JS property from the given target component.

Method Summary

Modifier and Type	Method	Description
protected JsFunction	toJs(Trigger trigger)	Builds the JsFunction that yields this input's value when called.

Methods inherited from class java.lang.Object

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

Constructor Details

PropertyInput

public PropertyInput(Component target,
 String propertyName,
 Class<T> valueType)

Creates a property input that reads the given JS property from the given target component.

Parameters:

target - the component to read from, not null

propertyName - the JS property name, not null

valueType - runtime type of the produced value, not null

Method Details

toJs

protected JsFunction toJs(Trigger trigger)

Description copied from class: Action.Input

Builds the JsFunction that yields this input's value when called. The function may take event as a runtime argument (declared by the subclass via JsFunction.withArguments(String...)); inputs that don't need event simply omit the declaration and ignore the argument the caller passes.

Specified by:

toJs in class Action.Input<T>

Parameters:

trigger - the surrounding trigger this render is for, not null

Returns:

the input's JS function, not null