com.vaadin.flow.data.binder.

java.lang.Object
- com.vaadin.flow.data.binder.DefaultBinderValidationErrorHandler

All Implemented Interfaces:

BinderValidationErrorHandler, Serializable
```
public class DefaultBinderValidationErrorHandler
extends Object
implements BinderValidationErrorHandler
```
Default implementation of BinderValidationErrorHandler.
This handler applies visual effects for the field if its type allows this:
- If the field's class implements HasValidation interface then its validity and error message is set based on a ValidationResult
- If the field's class may have a theme (e.g. implements HasTheme or HasElement) then theme name derived from the ErrorLevel of the ValidationResult instance is applied. E.g., for ErrorLevel.WARNING the element will get the "theme"="warning" attribute and value in HTML.
Since:

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

DefaultBinderValidationErrorHandler()

Method Summary

All Methods
Modifier and Type	Method	Description
`void`	`clearError(HasValue<?,?> field)`	Clears the error condition of the given field, if any.
`protected void`	`clearErrorTheme(HasValue<?,?> field)`	Clears error theme for the `field`.
`protected String`	`getErrorThemeName(ErrorLevel errorLevel)`	Gets the theme name for the `ErrorLevel`.
`protected Optional<ThemeList>`	`getThemes(HasValue<?,?> field)`	Gets themes for the `field`.
`void`	`handleError(HasValue<?,?> field, ValidationResult result)`	Handles a validation error emitted when trying to write the value of the given field.
`protected void`	`setErrorTheme(HasValue<?,?> field, ValidationResult result)`	Sets error theme for the `field` based on `result`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DefaultBinderValidationErrorHandler
```
public DefaultBinderValidationErrorHandler()
```
- Method Detail
  - handleError
```
public void handleError(HasValue<?,?> field,
                        ValidationResult result)
```
    Handles a validation error emitted when trying to write the value of the given field.
    
    Specified by:
    
    handleError in interface BinderValidationErrorHandler
    
    Parameters:
    
    field - the field with the invalid value
    
    result - the validation error result
    
    See Also:
    
    BinderValidationErrorHandler.clearError(HasValue)
  - clearError
```
public void clearError(HasValue<?,?> field)
```
    Clears the error condition of the given field, if any.
    
    Specified by:
    
    clearError in interface BinderValidationErrorHandler
    
    Parameters:
    
    field - the field with an invalid value
    
    See Also:
    
    BinderValidationErrorHandler.handleError(HasValue, ValidationResult)
  - getErrorThemeName
```
protected String getErrorThemeName(ErrorLevel errorLevel)
```
    Gets the theme name for the ErrorLevel.
    
    Parameters:
    
    errorLevel - the error level
    
    Returns:
    
    a theme name for the error level
  - getThemes
```
protected Optional<ThemeList> getThemes(HasValue<?,?> field)
```
    Gets themes for the field.
    
    Parameters:
    
    field - a field
    
    Returns:
    
    an optional theme list, or an empty optional if the field doesn't have it
  - clearErrorTheme
```
protected void clearErrorTheme(HasValue<?,?> field)
```
    Clears error theme for the field.
    
    Parameters:
    
    field - a feild
  - setErrorTheme
```
protected void setErrorTheme(HasValue<?,?> field,
                             ValidationResult result)
```
    Sets error theme for the field based on result.
    
    Parameters:
    
    field - a field
    
    result - a validation result

com.vaadin.flow.data.binder.

Class DefaultBinderValidationErrorHandler

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DefaultBinderValidationErrorHandler

Method Detail

handleError

clearError

getErrorThemeName

getThemes

clearErrorTheme

setErrorTheme