Package com.storedobject.vaadin

Class AbstractForm.ValueHandler

java.lang.Object

com.storedobject.vaadin.AbstractForm.ValueHandler

All Implemented Interfaces:

FieldValueHandler

Enclosing class:

AbstractForm<D>

protected class AbstractForm.ValueHandler
extends Object
implements FieldValueHandler

Basic value-handler implementation.

Author:

Syam

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ValueHandler()

Method Summary

Modifier and Type	Method	Description
boolean	canHandle(String fieldName)	Determines whether the handler can process the provided field name.
boolean	canSet(String fieldName)	Determines whether the specified field can be set to a value.
Object	getValue(String fieldName)	Retrieves the value associated with the specified field.
boolean	isBasic()	Determines whether the field value handler is considered basic.
boolean	isEditable(com.vaadin.flow.component.HasValue<?,?> field)	Checks if the given field is editable.
boolean	isEditable(String fieldName)	Checks whether the specified field is editable.
boolean	isVisible(com.vaadin.flow.component.HasValue<?,?> field)	Determines if the specified field is currently visible.
boolean	isVisible(String fieldName)	Checks whether the specified field is visible.
void	setValue(String fieldName, Object value)	Sets the value of the specified field.

Methods inherited from class java.lang.Object

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

Constructor Details

ValueHandler

protected ValueHandler()

Method Details

isBasic

public boolean isBasic()

Description copied from interface: FieldValueHandler

Determines whether the field value handler is considered basic.

Specified by:

isBasic in interface FieldValueHandler

Returns:

true if the handler is basic, false otherwise

canHandle

public boolean canHandle(String fieldName)

Description copied from interface: FieldValueHandler

Determines whether the handler can process the provided field name.

Specified by:

canHandle in interface FieldValueHandler

Parameters:

fieldName - the name of the field to check

Returns:

true if the handler can handle the field, false otherwise

canSet

public boolean canSet(String fieldName)

Description copied from interface: FieldValueHandler

Determines whether the specified field can be set to a value.

Specified by:

canSet in interface FieldValueHandler

Parameters:

fieldName - the name of the field to check

Returns:

true if the field can be set, false otherwise

getValue

public Object getValue(String fieldName)

Description copied from interface: FieldValueHandler

Retrieves the value associated with the specified field.

Specified by:

getValue in interface FieldValueHandler

Parameters:

fieldName - the name of the field whose value is to be retrieved

Returns:

the value of the specified field, or null if the field does not exist or is inaccessible

setValue

public void setValue(String fieldName,
 Object value)

Description copied from interface: FieldValueHandler

Sets the value of the specified field.

Specified by:

setValue in interface FieldValueHandler

Parameters:

fieldName - the name of the field to set the value for

value - the value to be set for the specified field

isVisible

public boolean isVisible(String fieldName)

Description copied from interface: FieldValueHandler

Checks whether the specified field is visible.

Specified by:

isVisible in interface FieldValueHandler

Parameters:

fieldName - the name of the field to check visibility for

Returns:

true if the field is visible, false otherwise

isVisible

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

Description copied from interface: FieldValueHandler

Determines if the specified field is currently visible.

Specified by:

isVisible in interface FieldValueHandler

Parameters:

field - the field to check for visibility, provided as an instance implementing HasValue

Returns:

true if the field is visible, false otherwise

isEditable

public boolean isEditable(String fieldName)

Description copied from interface: FieldValueHandler

Checks whether the specified field is editable.

Specified by:

isEditable in interface FieldValueHandler

Parameters:

fieldName - the name of the field to check

Returns:

true if the field is editable, false otherwise

isEditable

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

Description copied from interface: FieldValueHandler

Checks if the given field is editable.

Specified by:

isEditable in interface FieldValueHandler

Parameters:

field - the field to be checked

Returns:

true if the field is editable, false otherwise