Package com.storedobject.vaadin

Class ChangedValues

java.lang.Object

com.storedobject.vaadin.ChangedValues

public class ChangedValues
extends Object

A thin wrapper class that warps the details of value changed in a field (HasValue.

Author:

Syam

See Also:

• ExecutableView.valueChanged(ChangedValues)
• ExecutableView.trackValueChange(HasValue)

Constructor Summary

Constructors

Constructor	Description
ChangedValues(com.vaadin.flow.component.HasValue.ValueChangeEvent<?> event)	Constructor.

Method Summary

Modifier and Type	Method	Description
com.vaadin.flow.component.HasValue<?,?>	getChanged()	Get the field whose value is changed.
<V> ChangedValue<V>	getChanged(com.vaadin.flow.component.HasValue<?,V> field)	Get the "value change" (appropriately type-casted).
Object	getOldValue()	Get the old value.
Object	getValue()	Get the current valie.
boolean	isChanged(com.vaadin.flow.component.HasValue<?,?> field)	Is this is this the field that is chaged?
boolean	isFromClient()	Check if the value change happened due to user interaction.

Methods inherited from class java.lang.Object

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

Constructor Details

ChangedValues

public ChangedValues(com.vaadin.flow.component.HasValue.ValueChangeEvent<?> event)

Constructor.

Parameters:

event - Value change event

Method Details

isChanged

public boolean isChanged(com.vaadin.flow.component.HasValue<?,?> field)

Is this is this the field that is chaged?

Parameters:

field - Field to check

Returns:

True or false.

getChanged

public <V> ChangedValue<V> getChanged(com.vaadin.flow.component.HasValue<?,V> field)

Get the "value change" (appropriately type-casted).

Type Parameters:

V - Field value type

Parameters:

field - Field to check

Returns:

Type-casted version of "value change". (Returns null if this is not the field that changed its value).

getChanged

public com.vaadin.flow.component.HasValue<?,?> getChanged()

Get the field whose value is changed.

Returns:

Field.

getOldValue

public Object getOldValue()

Get the old value.

Returns:

Old value.

getValue

public Object getValue()

Get the current valie.

Returns:

New value.

isFromClient

public boolean isFromClient()

Check if the value change happened due to user interaction.

Returns:

True or false.