Package com.google.gwt.user.client.ui

Class ValuePicker<T>

java.lang.Object

com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.Widget

com.google.gwt.user.client.ui.Composite

com.google.gwt.user.client.ui.ValuePicker<T>

Type Parameters:

T - the type of value

All Implemented Interfaces:

IsEditor<LeafValueEditor<T>>, HasAttachHandlers, HasValueChangeHandlers<T>, HasHandlers, EventListener, TakesValue<T>, HasConstrainedValue<T>, HasValue<T>, HasVisibility, IsRenderable, IsWidget

public class ValuePicker<T>
extends Composite
implements HasConstrainedValue<T>, IsEditor<LeafValueEditor<T>>

Allows the user to pick a single value from a list.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled

Field Summary

Fields inherited from class com.google.gwt.user.client.ui.Widget

eventsToSink

Fields inherited from class com.google.gwt.user.client.ui.UIObject

DEBUG_ID_PREFIX, MISSING_ELEMENT_ERROR, SETELEMENT_TWICE_ERROR

Constructor Summary

Constructors

Constructor	Description
ValuePicker()
ValuePicker(Renderer<? super T> renderer)
ValuePicker(CellList<T> cellList)

Method Summary

Modifier and Type	Method	Description
HandlerRegistration	addValueChangeHandler(ValueChangeHandler<T> handler)	Adds a ValueChangeEvent handler.
LeafValueEditor<T>	asEditor()	Returns a TakesValueEditor backed by the ValuePicker.
ValuePicker<T>	asWidget()	Returns this view.
int	getPageSize()
T	getValue()	Gets this object's value.
void	setAcceptableValues(Collection<T> values)	Set the acceptable values.
void	setPageSize(int size)
void	setValue(T value)	Sets this object's value without firing any events.
void	setValue(T value, boolean fireEvents)	Sets this object's value.

Methods inherited from class com.google.gwt.user.client.ui.Composite

claimElement, getWidget, initializeClaimedElement, initWidget, isAttached, onAttach, onBrowserEvent, onDetach, render, render, resolvePotentialElement, setWidget

Methods inherited from class com.google.gwt.user.client.ui.Widget

addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, ensureHandlers, fireEvent, getHandlerCount, getHandlerManager, getLayoutData, getParent, isOrWasAttached, onLoad, onUnload, removeFromParent, replaceElement, setLayoutData, setParent, sinkEvents, unsinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

fireEvent

Constructor Details

ValuePicker

public ValuePicker(CellList<T> cellList)

ValuePicker

public ValuePicker(Renderer<? super T> renderer)

ValuePicker

public ValuePicker()

Method Details

addValueChangeHandler

public HandlerRegistration addValueChangeHandler(ValueChangeHandler<T> handler)

Description copied from interface: HasValueChangeHandlers

Adds a ValueChangeEvent handler.

Specified by:

addValueChangeHandler in interface HasValueChangeHandlers<T>

Parameters:

handler - the handler

Returns:

the registration for the event

asEditor

public LeafValueEditor<T> asEditor()

Returns a TakesValueEditor backed by the ValuePicker.

Specified by:

asEditor in interface IsEditor<T>

Returns:

an Editor of type E

asWidget

public ValuePicker<T> asWidget()

Returns this view.

Specified by:

asWidget in interface IsWidget

Overrides:

asWidget in class Widget

getPageSize

public int getPageSize()

getValue

public T getValue()

Description copied from interface: HasValue

Gets this object's value.

Specified by:

getValue in interface HasValue<T>

Specified by:

getValue in interface TakesValue<T>

Returns:

the object's value

See Also:

• TakesValue.setValue(V)

setAcceptableValues

public void setAcceptableValues(Collection<T> values)

Description copied from interface: HasConstrainedValue

Set the acceptable values.

Specified by:

setAcceptableValues in interface HasConstrainedValue<T>

Parameters:

values - the acceptible values

setPageSize

public void setPageSize(int size)

setValue

public void setValue(T value)

Description copied from interface: HasValue

Sets this object's value without firing any events. This should be identical to calling setValue(value, false).

It is acceptable to fail assertions or throw (documented) unchecked exceptions in response to bad values.

Widgets must accept null as a valid value. By convention, setting a widget to null clears value, calling getValue() on a cleared widget returns null. Widgets that can not be cleared (e.g. CheckBox) must find another valid meaning for null input.

Specified by:

setValue in interface HasValue<T>

Specified by:

setValue in interface TakesValue<T>

Parameters:

value - the object's new value

See Also:

• TakesValue.getValue()

setValue

public void setValue(T value,
 boolean fireEvents)

Description copied from interface: HasValue

Sets this object's value. Fires ValueChangeEvent when fireEvents is true and the new value does not equal the existing value.

It is acceptable to fail assertions or throw (documented) unchecked exceptions in response to bad values.

Specified by:

setValue in interface HasValue<T>

Parameters:

value - the object's new value

fireEvents - fire events if true and value is new