org.apache.tapestry5.internal.services
Class ComponentDefaultProviderImpl

java.lang.Object
  org.apache.tapestry5.internal.services.ComponentDefaultProviderImpl

All Implemented Interfaces:

ComponentDefaultProvider

public class ComponentDefaultProviderImpl
extends Object
implements ComponentDefaultProvider

Constructor Summary

ComponentDefaultProviderImpl(PropertyAccess propertyAccess, BindingSource bindingSource, ValueEncoderSource valueEncoderSource, FieldTranslatorSource fieldTranslatorSource, FieldValidatorDefaultSource fieldValidatorDefaultSource)

Method Summary

Binding	defaultBinding(String parameterName, ComponentResources resources) Checks to see if the container of the component (identified by its resources) contains a property matching the component's id.
String	defaultLabel(ComponentResources resources) Computes the default label for the component (which will generally be a Field).
FieldTranslator	defaultTranslator(String parameterName, ComponentResources resources) Provides a translator based on the bound parameter type, if possible.
Binding	defaultTranslatorBinding(String parameterName, ComponentResources resources) Provides a binding that itself provides the field translator.
FieldValidator	defaultValidator(String parameterName, ComponentResources resources) Provides a validator based on the bound parameter type.
Binding	defaultValidatorBinding(String parameterName, ComponentResources resources) Provides a binding that itself provides the field translator.
ValueEncoder	defaultValueEncoder(String parameterName, ComponentResources resources) Gets or creates a value encoder based on the type of the named parameter.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentDefaultProviderImpl

public ComponentDefaultProviderImpl(PropertyAccess propertyAccess,
                                    BindingSource bindingSource,
                                    ValueEncoderSource valueEncoderSource,
                                    FieldTranslatorSource fieldTranslatorSource,
                                    FieldValidatorDefaultSource fieldValidatorDefaultSource)

Method Detail

defaultLabel

public String defaultLabel(ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Computes the default label for the component (which will generally be a Field).

Specified by:

defaultLabel in interface ComponentDefaultProvider

Returns:

the label, either extracted from the component's container's message catalog, or derived from the component's ComponentResourcesCommon.getId().

defaultBinding

public Binding defaultBinding(String parameterName,
                              ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Checks to see if the container of the component (identified by its resources) contains a property matching the component's id. If so, a binding for that property is returned. This is usually the default for a Field's value parameter (or equivalent).

Specified by:

defaultBinding in interface ComponentDefaultProvider

Parameters:

parameterName - the name of the parameter

resources - the resources of the component for which a binding is needed

Returns:

the binding, or null if the container does not have a matching property

defaultValueEncoder

public ValueEncoder defaultValueEncoder(String parameterName,
                                        ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Gets or creates a value encoder based on the type of the named parameter. ValueEncoders are cached based on type.

Specified by:

defaultValueEncoder in interface ComponentDefaultProvider

Parameters:

parameterName - the name of the parameter whose type is used to locate a ValueEncoderFactory

resources - the resources of the component, from which parameter and its type are extracted

Returns:

the value encoder, or null if the type of the parameter is not known

defaultTranslator

public FieldTranslator defaultTranslator(String parameterName,
                                         ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Provides a translator based on the bound parameter type, if possible.

Specified by:

defaultTranslator in interface ComponentDefaultProvider

Returns:

the translator, or null

defaultTranslatorBinding

public Binding defaultTranslatorBinding(String parameterName,
                                        ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Provides a binding that itself provides the field translator.

Specified by:

defaultTranslatorBinding in interface ComponentDefaultProvider

Returns:

binding that provides the FieldTranslator

defaultValidator

public FieldValidator defaultValidator(String parameterName,
                                       ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Provides a validator based on the bound parameter type. If the property type of the parameter is not known, then a no-op validator is returned.

Specified by:

defaultValidator in interface ComponentDefaultProvider

Returns:

the validator, possibly a no-op validator

defaultValidatorBinding

public Binding defaultValidatorBinding(String parameterName,
                                       ComponentResources resources)

Description copied from interface: ComponentDefaultProvider

Provides a binding that itself provides the field translator.

Specified by:

defaultValidatorBinding in interface ComponentDefaultProvider

Returns:

binding that provides the FieldTranslator