com.whitestein.lsps.vaadin.ui

Class Bindings

java.lang.Object

com.whitestein.lsps.vaadin.ui.Bindings

public class Bindings
extends Object

Provides mapping from a record instance and optionally a record property, to the UI component which displays the value. The class uses the binding field and UIComponentShowingRecords.getShownRecords() to match UIComponents.

Author:

mvy

Method Summary

Modifier and Type	Method and Description
Set<UIComponent>	get(RecordHolder record, Property property) Returns components which are displaying given record and given property.
static ReferenceHolder	getBinding(RecordHolder def) Retrieves the value of the "Binding" field.
static Variant<ReferenceHolder>	getBinding(Variant.RecordVariant def) Retrieves the value of the "Binding" field.
static Bindings	getBindings(Collection<UIComponent> components) Computes all known bindings to all components.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getBindings

public static Bindings getBindings(Collection<UIComponent> components)

Computes all known bindings to all components.

Parameters:

components - the components, not null, may be empty.

Returns:

map, never null, may be empty.

getBinding

public static ReferenceHolder getBinding(RecordHolder def)

Retrieves the value of the "Binding" field.

Parameters:

def - the component definition, not null.

Returns:

the binding reference or null if there is no such field, it is not of type Reference or is null.

getBinding

public static Variant<ReferenceHolder> getBinding(Variant.RecordVariant def)

Retrieves the value of the "Binding" field.

Parameters:

def - the component definition, not null.

Returns:

the binding reference, never null. Absent if there is no such field or if the field is not of type Reference or is null.

get

public Set<UIComponent> get(RecordHolder record,
                            Property property)

Returns components which are displaying given record and given property. If no such components are found, returns components which are displaying given record (see UIComponentShowingRecords.getShownRecords()).

Parameters:

record - the record instance, not null.

property - the property, may be null.

Returns:

list of components, may be empty but may never be null. Unmodifiable.

toString

public String toString()

Overrides:

toString in class Object