com.google.gwt.user.client.ui

Class SuggestBox

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.SuggestBox

All Implemented Interfaces:

IsEditor<LeafValueEditor<String>>, HasAllKeyHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasKeyUpHandlers, HasAttachHandlers, HasSelectionHandlers<SuggestOracle.Suggestion>, HasValueChangeHandlers<String>, HasHandlers, EventListener, TakesValue<String>, FiresSuggestionEvents, Focusable, HasAnimation, HasEnabled, HasFocus, HasText, HasValue<String>, HasVisibility, IsRenderable, IsWidget, SourcesChangeEvents, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents

public class SuggestBox
extends Composite
implements HasText, HasFocus, HasAnimation, HasEnabled, SourcesClickEvents, SourcesChangeEvents, SourcesKeyboardEvents, FiresSuggestionEvents, HasAllKeyHandlers, HasValue<String>, HasSelectionHandlers<SuggestOracle.Suggestion>, IsEditor<LeafValueEditor<String>>

A SuggestBox is a text box or text area which displays a pre-configured set of selections that match the user's input. Each SuggestBox is associated with a single SuggestOracle. The SuggestOracle is used to provide a set of selections given a specific query string.

By default, the SuggestBox uses a MultiWordSuggestOracle as its oracle. Below we show how a MultiWordSuggestOracle can be configured:

   MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
   oracle.add("Cat");
   oracle.add("Dog");
   oracle.add("Horse");
   oracle.add("Canary");

   SuggestBox box = new SuggestBox(oracle);
 

Using the example above, if the user types "C" into the text widget, the oracle will configure the suggestions with the "Cat" and "Canary" suggestions. Specifically, whenever the user types a key into the text widget, the value is submitted to the MultiWordSuggestOracle.

Note that there is no method to retrieve the "currently selected suggestion" in a SuggestBox, because there are points in time where the currently selected suggestion is not defined. For example, if the user types in some text that does not match any of the SuggestBox's suggestions, then the SuggestBox will not have a currently selected suggestion. It is more useful to know when a suggestion has been chosen from the SuggestBox's list of suggestions. A SuggestBox fires SelectionEvents whenever a suggestion is chosen, and handlers for these events can be added using the addSelectionHandler(SelectionHandler) method.

CSS Style Rules

.gwt-SuggestBox

the suggest box itself

See Also:

SuggestOracle, MultiWordSuggestOracle, ValueBoxBase

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SuggestBox.DefaultSuggestionDisplay The default implementation of SuggestBox.SuggestionDisplay displays suggestions in a PopupPanel beneath the SuggestBox.
static interface	SuggestBox.SuggestionCallback The callback used when a user selects a SuggestOracle.Suggestion.
static class	SuggestBox.SuggestionDisplay Used to display suggestions to the user.

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.UIObject

DEBUG_ID_PREFIX

Constructor Summary

Constructors

Constructor and Description
SuggestBox() Constructor for SuggestBox.
SuggestBox(SuggestOracle oracle) Constructor for SuggestBox.
SuggestBox(SuggestOracle oracle, ValueBoxBase<String> box) Constructor for SuggestBox.
SuggestBox(SuggestOracle oracle, ValueBoxBase<String> box, SuggestBox.SuggestionDisplay suggestDisplay) Constructor for SuggestBox.

Method Summary

Modifier and Type	Method and Description
void	addChangeListener(ChangeListener listener) Deprecated. use getTextBox()().addChangeHandler instead
void	addClickListener(ClickListener listener) Deprecated. use getTextBox()().addClickHandler instead
void	addEventHandler(SuggestionHandler handler) Deprecated. use addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<com.google.gwt.user.client.ui.SuggestOracle.Suggestion>) instead.
void	addFocusListener(FocusListener listener) Deprecated. use getTextBox()().addFocusHandler/addBlurHandler() instead
void	addKeyboardListener(KeyboardListener listener) Deprecated. Use addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler), addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler) and addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler) instead
HandlerRegistration	addKeyDownHandler(KeyDownHandler handler) Adds a KeyDownEvent handler.
HandlerRegistration	addKeyPressHandler(KeyPressHandler handler) Adds a KeyPressEvent handler.
HandlerRegistration	addKeyUpHandler(KeyUpHandler handler) Adds a KeyUpEvent handler.
HandlerRegistration	addSelectionHandler(SelectionHandler<SuggestOracle.Suggestion> handler) Adds a SelectionEvent handler.
HandlerRegistration	addValueChangeHandler(ValueChangeHandler<String> handler) Adds a ValueChangeEvent handler.
LeafValueEditor<String>	asEditor() Returns a TakesValueEditor backed by the SuggestBox.
int	getLimit() Gets the limit for the number of suggestions that should be displayed for this box.
SuggestBox.SuggestionDisplay	getSuggestionDisplay() Get the SuggestBox.SuggestionDisplay used to display suggestions.
SuggestOracle	getSuggestOracle() Gets the suggest box's SuggestOracle.
int	getTabIndex() Gets the widget's position in the tab index.
String	getText() Gets this object's text.
TextBoxBase	getTextBox() Deprecated. in favour of getValueBox
String	getValue() Gets this object's value.
ValueBoxBase<String>	getValueBox() Get the ValueBoxBase associated with this suggest box.
void	hideSuggestionList() Deprecated. use SuggestBox.DefaultSuggestionDisplay.hideSuggestions() instead
boolean	isAnimationEnabled() Deprecated. use SuggestBox.DefaultSuggestionDisplay.isAnimationEnabled() instead
boolean	isAutoSelectEnabled() Returns whether or not the first suggestion will be automatically selected.
boolean	isEnabled() Gets whether this widget is enabled.
boolean	isSuggestionListShowing() Deprecated. use SuggestBox.DefaultSuggestionDisplay.isSuggestionListShowing()
protected void	onEnsureDebugId(String baseID) Called when the user sets the id using the UIObject.ensureDebugId(String) method.
void	refreshSuggestionList() Refreshes the current list of suggestions.
void	removeChangeListener(ChangeListener listener) Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addChangeHandler instead
void	removeClickListener(ClickListener listener) Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addClickHandler instead
void	removeEventHandler(SuggestionHandler handler) Deprecated. Use the HandlerRegistration.removeHandler() method no the object returned by addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<com.google.gwt.user.client.ui.SuggestOracle.Suggestion>) instead
void	removeFocusListener(FocusListener listener) Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addFocusListener instead
void	removeKeyboardListener(KeyboardListener listener) Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().add*Handler instead
void	setAccessKey(char key) Sets the widget's 'access key'.
void	setAnimationEnabled(boolean enable) Deprecated. use SuggestBox.DefaultSuggestionDisplay.setAnimationEnabled(boolean) instead
void	setAutoSelectEnabled(boolean selectsFirstItem) Turns on or off the behavior that automatically selects the first suggested item.
void	setEnabled(boolean enabled) Sets whether this widget is enabled.
void	setFocus(boolean focused) Explicitly focus/unfocus this widget.
void	setLimit(int limit) Sets the limit to the number of suggestions the oracle should provide.
void	setPopupStyleName(String style) Deprecated. use SuggestBox.DefaultSuggestionDisplay.setPopupStyleName(String) instead
void	setTabIndex(int index) Sets the widget's position in the tab index.
void	setText(String text) Sets this object's text.
void	setValue(String newValue) Sets this object's value without firing any events.
void	setValue(String value, boolean fireEvents) Sets this object's value.
void	showSuggestionList() Show the current list of suggestions.
static SuggestBox	wrap(SuggestOracle oracle, Element element) Creates a SuggestBox widget that wraps an existing <input type='text'> element.

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, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isOrWasAttached, onLoad, onUnload, removeFromParent, setLayoutData, 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, 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

equals, finalize, getClass, hashCode

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

fireEvent

Constructor Detail

SuggestBox

public SuggestBox()

Constructor for SuggestBox. Creates a MultiWordSuggestOracle and TextBox to use with this SuggestBox.

SuggestBox

public SuggestBox(SuggestOracle oracle)

Constructor for SuggestBox. Creates a TextBox to use with this SuggestBox.

Parameters:

oracle - the oracle for this SuggestBox

SuggestBox

public SuggestBox(SuggestOracle oracle,
                  ValueBoxBase<String> box)

Constructor for SuggestBox. The text box will be removed from it's current location and wrapped by the SuggestBox.

Parameters:

oracle - supplies suggestions based upon the current contents of the text widget

box - the text widget

SuggestBox

public SuggestBox(SuggestOracle oracle,
                  ValueBoxBase<String> box,
                  SuggestBox.SuggestionDisplay suggestDisplay)

Constructor for SuggestBox. The text box will be removed from it's current location and wrapped by the SuggestBox.

Parameters:

oracle - supplies suggestions based upon the current contents of the text widget

box - the text widget

suggestDisplay - the class used to display suggestions

Method Detail

wrap

public static SuggestBox wrap(SuggestOracle oracle,
                              Element element)

Creates a SuggestBox widget that wraps an existing <input type='text'> element. This element must already be attached to the document. If the element is removed from the document, you must call RootPanel.detachNow(Widget).

Parameters:

oracle - the suggest box oracle to use

element - the element to be wrapped

addChangeListener

@Deprecated
public void addChangeListener(ChangeListener listener)

Deprecated. use getTextBox()().addChangeHandler instead

Adds a listener to receive change events on the SuggestBox's text box. The source Widget for these events will be the SuggestBox.

Specified by:

addChangeListener in interface SourcesChangeEvents

Parameters:

listener - the listener interface to add

addClickListener

@Deprecated
public void addClickListener(ClickListener listener)

Deprecated. use getTextBox()().addClickHandler instead

Adds a listener to receive click events on the SuggestBox's text box. The source Widget for these events will be the SuggestBox.

Specified by:

addClickListener in interface SourcesClickEvents

Parameters:

listener - the listener interface to add

addEventHandler

@Deprecated
public void addEventHandler(SuggestionHandler handler)

Deprecated. use addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<com.google.gwt.user.client.ui.SuggestOracle.Suggestion>) instead.

Adds an event to this handler.

Specified by:

addEventHandler in interface FiresSuggestionEvents

Parameters:

handler - the handler to add

addFocusListener

@Deprecated
public void addFocusListener(FocusListener listener)

Deprecated. use getTextBox()().addFocusHandler/addBlurHandler() instead

Adds a listener to receive focus events on the SuggestBox's text box. The source Widget for these events will be the SuggestBox.

Specified by:

addFocusListener in interface SourcesFocusEvents

Parameters:

listener - the listener interface to add

addKeyboardListener

@Deprecated
public void addKeyboardListener(KeyboardListener listener)

Deprecated. Use addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler), addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler) and addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler) instead

Description copied from interface: SourcesKeyboardEvents

Adds a listener interface to receive keyboard events.

Specified by:

addKeyboardListener in interface SourcesKeyboardEvents

Parameters:

listener - the listener interface to add

addKeyDownHandler

public HandlerRegistration addKeyDownHandler(KeyDownHandler handler)

Description copied from interface: HasKeyDownHandlers

Adds a KeyDownEvent handler.

Specified by:

addKeyDownHandler in interface HasKeyDownHandlers

Parameters:

handler - the key down handler

Returns:

HandlerRegistration used to remove this handler

addKeyPressHandler

public HandlerRegistration addKeyPressHandler(KeyPressHandler handler)

Description copied from interface: HasKeyPressHandlers

Adds a KeyPressEvent handler.

Specified by:

addKeyPressHandler in interface HasKeyPressHandlers

Parameters:

handler - the key press handler

Returns:

HandlerRegistration used to remove this handler

addKeyUpHandler

public HandlerRegistration addKeyUpHandler(KeyUpHandler handler)

Description copied from interface: HasKeyUpHandlers

Adds a KeyUpEvent handler.

Specified by:

addKeyUpHandler in interface HasKeyUpHandlers

Parameters:

handler - the key up handler

Returns:

HandlerRegistration used to remove this handler

addSelectionHandler

public HandlerRegistration addSelectionHandler(SelectionHandler<SuggestOracle.Suggestion> handler)

Description copied from interface: HasSelectionHandlers

Adds a SelectionEvent handler.

Specified by:

addSelectionHandler in interface HasSelectionHandlers<SuggestOracle.Suggestion>

Parameters:

handler - the handler

Returns:

the registration for the event

addValueChangeHandler

public HandlerRegistration addValueChangeHandler(ValueChangeHandler<String> handler)

Description copied from interface: HasValueChangeHandlers

Adds a ValueChangeEvent handler.

Specified by:

addValueChangeHandler in interface HasValueChangeHandlers<String>

Parameters:

handler - the handler

Returns:

the registration for the event

asEditor

public LeafValueEditor<String> asEditor()

Returns a TakesValueEditor backed by the SuggestBox.

Specified by:

asEditor in interface IsEditor<LeafValueEditor<String>>

Returns:

an Editor of type E

getLimit

public int getLimit()

Gets the limit for the number of suggestions that should be displayed for this box. It is up to the current SuggestOracle to enforce this limit.

Returns:

the limit for the number of suggestions

getSuggestionDisplay

public SuggestBox.SuggestionDisplay getSuggestionDisplay()

Get the SuggestBox.SuggestionDisplay used to display suggestions.

Returns:

the SuggestBox.SuggestionDisplay

getSuggestOracle

public SuggestOracle getSuggestOracle()

Gets the suggest box's SuggestOracle.

Returns:

the SuggestOracle

getTabIndex

public int getTabIndex()

Description copied from interface: Focusable

Gets the widget's position in the tab index.

Specified by:

getTabIndex in interface Focusable

Returns:

the widget's tab index

getText

public String getText()

Description copied from interface: HasText

Gets this object's text.

Specified by:

getText in interface HasText

Returns:

the object's text

getTextBox

@Deprecated
public TextBoxBase getTextBox()

Deprecated. in favour of getValueBox

Get the text box associated with this suggest box.

Returns:

this suggest box's text box

Throws:

ClassCastException - if this suggest box's value box is not an instance of TextBoxBase

getValue

public String getValue()

Description copied from interface: HasValue

Gets this object's value.

Specified by:

getValue in interface TakesValue<String>

Specified by:

getValue in interface HasValue<String>

Returns:

the object's value

See Also:

TakesValue.setValue(V)

getValueBox

public ValueBoxBase<String> getValueBox()

Get the ValueBoxBase associated with this suggest box.

Returns:

this suggest box's value box

hideSuggestionList

@Deprecated
public void hideSuggestionList()

Deprecated. use SuggestBox.DefaultSuggestionDisplay.hideSuggestions() instead

Hide current suggestions in the SuggestBox.DefaultSuggestionDisplay. Note that this method is a no-op unless the SuggestBox.DefaultSuggestionDisplay is used.

isAnimationEnabled

@Deprecated
public boolean isAnimationEnabled()

Deprecated. use SuggestBox.DefaultSuggestionDisplay.isAnimationEnabled() instead

Check whether or not the SuggestBox.DefaultSuggestionDisplay has animations enabled. Note that this method only has a meaningful return value when the SuggestBox.DefaultSuggestionDisplay is used.

Specified by:

isAnimationEnabled in interface HasAnimation

isAutoSelectEnabled

public boolean isAutoSelectEnabled()

Returns whether or not the first suggestion will be automatically selected. This behavior is on by default.

Returns:

true if the first suggestion will be automatically selected

isEnabled

public boolean isEnabled()

Gets whether this widget is enabled.

Specified by:

isEnabled in interface HasEnabled

Returns:

true if the widget is enabled

isSuggestionListShowing

@Deprecated
public boolean isSuggestionListShowing()

Deprecated. use SuggestBox.DefaultSuggestionDisplay.isSuggestionListShowing()

Check if the SuggestBox.DefaultSuggestionDisplay is showing. Note that this method only has a meaningful return value when the SuggestBox.DefaultSuggestionDisplay is used.

Returns:

true if the list of suggestions is currently showing, false if not

refreshSuggestionList

public void refreshSuggestionList()

Refreshes the current list of suggestions.

removeChangeListener

@Deprecated
public void removeChangeListener(ChangeListener listener)

Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addChangeHandler instead

Description copied from interface: SourcesChangeEvents

Removes a previously added listener interface.

Specified by:

removeChangeListener in interface SourcesChangeEvents

Parameters:

listener - the listener interface to remove

removeClickListener

@Deprecated
public void removeClickListener(ClickListener listener)

Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addClickHandler instead

Description copied from interface: SourcesClickEvents

Removes a previously added listener interface.

Specified by:

removeClickListener in interface SourcesClickEvents

Parameters:

listener - the listener interface to remove

removeEventHandler

@Deprecated
public void removeEventHandler(SuggestionHandler handler)

Deprecated. Use the HandlerRegistration.removeHandler() method no the object returned by addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<com.google.gwt.user.client.ui.SuggestOracle.Suggestion>) instead

Description copied from interface: FiresSuggestionEvents

Removes a previously added handler interface.

Specified by:

removeEventHandler in interface FiresSuggestionEvents

Parameters:

handler - the handler to remove

removeFocusListener

@Deprecated
public void removeFocusListener(FocusListener listener)

Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().addFocusListener instead

Description copied from interface: SourcesFocusEvents

Removes a previously added listener interface.

Specified by:

removeFocusListener in interface SourcesFocusEvents

Parameters:

listener - the listener interface to remove

removeKeyboardListener

@Deprecated
public void removeKeyboardListener(KeyboardListener listener)

Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by getTextBox()().add*Handler instead

Description copied from interface: SourcesKeyboardEvents

Removes a previously added listener interface.

Specified by:

removeKeyboardListener in interface SourcesKeyboardEvents

Parameters:

listener - the listener interface to remove

setAccessKey

public void setAccessKey(char key)

Description copied from interface: Focusable

Sets the widget's 'access key'. This key is used (in conjunction with a browser-specific modifier key) to automatically focus the widget.

Specified by:

setAccessKey in interface Focusable

Parameters:

key - the widget's access key

setAnimationEnabled

@Deprecated
public void setAnimationEnabled(boolean enable)

Deprecated. use SuggestBox.DefaultSuggestionDisplay.setAnimationEnabled(boolean) instead

Enable or disable animations in the SuggestBox.DefaultSuggestionDisplay. Note that this method is a no-op unless the SuggestBox.DefaultSuggestionDisplay is used.

Specified by:

setAnimationEnabled in interface HasAnimation

Parameters:

enable - true to enable, false to disable

setAutoSelectEnabled

public void setAutoSelectEnabled(boolean selectsFirstItem)

Turns on or off the behavior that automatically selects the first suggested item. This behavior is on by default.

Parameters:

selectsFirstItem - Whether or not to automatically select the first suggestion

setEnabled

public void setEnabled(boolean enabled)

Sets whether this widget is enabled.

Specified by:

setEnabled in interface HasEnabled

Parameters:

enabled - true to enable the widget, false to disable it

setFocus

public void setFocus(boolean focused)

Description copied from interface: Focusable

Explicitly focus/unfocus this widget. Only one widget can have focus at a time, and the widget that does will receive all keyboard events.

Specified by:

setFocus in interface Focusable

Parameters:

focused - whether this widget should take focus or release it

setLimit

public void setLimit(int limit)

Sets the limit to the number of suggestions the oracle should provide. It is up to the oracle to enforce this limit.

Parameters:

limit - the limit to the number of suggestions provided

setPopupStyleName

@Deprecated
public void setPopupStyleName(String style)

Deprecated. use SuggestBox.DefaultSuggestionDisplay.setPopupStyleName(String) instead

Sets the style name of the suggestion popup in the SuggestBox.DefaultSuggestionDisplay. Note that this method is a no-op unless the SuggestBox.DefaultSuggestionDisplay is used.

Parameters:

style - the new primary style name

See Also:

UIObject.setStyleName(String)

setTabIndex

public void setTabIndex(int index)

Description copied from interface: Focusable

Sets the widget's position in the tab index. If more than one widget has the same tab index, each such widget will receive focus in an arbitrary order. Setting the tab index to -1 will cause this widget to be removed from the tab order.

Specified by:

setTabIndex in interface Focusable

Parameters:

index - the widget's tab index

setText

public void setText(String text)

Description copied from interface: HasText

Sets this object's text.

Specified by:

setText in interface HasText

Parameters:

text - the object's new text

setValue

public void setValue(String newValue)

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 TakesValue<String>

Specified by:

setValue in interface HasValue<String>

Parameters:

newValue - the object's new value

See Also:

TakesValue.getValue()

setValue

public void setValue(String 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<String>

Parameters:

value - the object's new value

fireEvents - fire events if true and value is new

showSuggestionList

public void showSuggestionList()

Show the current list of suggestions.

onEnsureDebugId

protected void onEnsureDebugId(String baseID)

Description copied from class: UIObject

Called when the user sets the id using the UIObject.ensureDebugId(String) method. Subclasses of UIObject can override this method to add IDs to their sub elements. If a subclass does override this method, it should list the IDs (relative to the base ID), that will be applied to each sub Element with a short description. For example:

• -mysubelement = Applies to my sub element.

Subclasses should make a super call to this method to ensure that the ID of the main element is set. This method will not be called unless you inherit the DebugID module in your gwt.xml file by adding the following line:

 <inherits name="com.google.gwt.user.Debug"/>

Overrides:

onEnsureDebugId in class UIObject

Parameters:

baseID - the base ID used by the main element