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com.google.gwt.user.client.ui
Class Label

java.lang.Object
  extended by com.google.gwt.user.client.ui.UIObject
      extended by com.google.gwt.user.client.ui.Widget
          extended by com.google.gwt.user.client.ui.LabelBase<java.lang.String>
              extended by com.google.gwt.user.client.ui.Label
All Implemented Interfaces:
IsEditor<LeafValueEditor<java.lang.String>>, HasAllDragAndDropHandlers, HasAllGestureHandlers, HasAllMouseHandlers, HasAllTouchHandlers, HasClickHandlers, HasDoubleClickHandlers, HasDragEndHandlers, HasDragEnterHandlers, HasDragHandlers, HasDragLeaveHandlers, HasDragOverHandlers, HasDragStartHandlers, HasDropHandlers, HasGestureChangeHandlers, HasGestureEndHandlers, HasGestureStartHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasTouchCancelHandlers, HasTouchEndHandlers, HasTouchMoveHandlers, HasTouchStartHandlers, HasAttachHandlers, HasHandlers, HasDirection, HasDirectionEstimator, EventListener, HasAutoHorizontalAlignment, HasDirectionalText, HasHorizontalAlignment, HasText, HasVisibility, HasWordWrap, IsWidget, SourcesClickEvents, SourcesMouseEvents
Direct Known Subclasses:
HTML, InlineLabel
public class Label
extends LabelBase<java.lang.String>
implements HasDirectionalText, HasDirection, HasClickHandlers, HasDoubleClickHandlers, SourcesClickEvents, SourcesMouseEvents, HasAllDragAndDropHandlers, HasAllGestureHandlers, HasAllMouseHandlers, HasAllTouchHandlers, IsEditor<LeafValueEditor<java.lang.String>>

A widget that contains arbitrary text, not interpreted as HTML. This widget uses a <div> element, causing it to be displayed with block layout.

Built-in Bidi Text Support

This widget is capable of automatically adjusting its direction according to its content. This feature is controlled by LabelBase.setDirectionEstimator(boolean) or passing a DirectionEstimator parameter to the constructor, and is off by default.

CSS Style Rules

Example

public class HTMLExample implements EntryPoint {

  public void onModuleLoad() {
    // Create a Label and an HTML widget.
    Label lbl = new Label("This is just text.  It will not be interpreted "
      + "as <html>.");

    HTML html = new HTML(
      "This is <b>HTML</b>.  It will be interpreted as such if you specify "
        + "the <span style='font-family:fixed'>asHTML</span> flag.", true);

    // Add them to the root panel.
    VerticalPanel panel = new VerticalPanel();
    panel.add(lbl);
    panel.add(html);
    RootPanel.get().add(panel);
  }
}

Nested Class Summary
 
Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject
UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled
 
Nested classes/interfaces inherited from interface com.google.gwt.i18n.client.HasDirection
HasDirection.Direction
 
Nested classes/interfaces inherited from interface com.google.gwt.user.client.ui.HasHorizontalAlignment
HasHorizontalAlignment.AutoHorizontalAlignmentConstant, HasHorizontalAlignment.HorizontalAlignmentConstant
 
Field Summary
static DirectionEstimator DEFAULT_DIRECTION_ESTIMATOR
           
 
Fields inherited from class com.google.gwt.user.client.ui.LabelBase
directionalTextHelper
 
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
 
Fields inherited from interface com.google.gwt.user.client.ui.HasAutoHorizontalAlignment
ALIGN_CONTENT_END, ALIGN_CONTENT_START
 
Fields inherited from interface com.google.gwt.user.client.ui.HasHorizontalAlignment
ALIGN_CENTER, ALIGN_DEFAULT, ALIGN_JUSTIFY, ALIGN_LEFT, ALIGN_LOCALE_END, ALIGN_LOCALE_START, ALIGN_RIGHT
 
Constructor Summary
  Label()
          Creates an empty label.
protected Label(Element element)
          This constructor may be used by subclasses to explicitly use an existing element.
  Label(java.lang.String text)
          Creates a label with the specified text.
  Label(java.lang.String text, boolean wordWrap)
          Creates a label with the specified text.
  Label(java.lang.String text, DirectionEstimator directionEstimator)
          Creates a label with the specified text and a default direction estimator.
  Label(java.lang.String text, HasDirection.Direction dir)
          Creates a label with the specified text and direction.
 
Method Summary
 HandlerRegistration addClickHandler(ClickHandler handler)
          Adds a ClickEvent handler.
 void addClickListener(ClickListener listener)
          Deprecated. Use addClickHandler(com.google.gwt.event.dom.client.ClickHandler) instead
 HandlerRegistration addDoubleClickHandler(DoubleClickHandler handler)
          Adds a DoubleClickEvent handler.
 HandlerRegistration addDragEndHandler(DragEndHandler handler)
          Adds a DragEndEvent handler.
 HandlerRegistration addDragEnterHandler(DragEnterHandler handler)
          Adds a DragEnterEvent handler.
 HandlerRegistration addDragHandler(DragHandler handler)
          Adds a DragEvent handler.
 HandlerRegistration addDragLeaveHandler(DragLeaveHandler handler)
          Adds a DragLeaveEvent handler.
 HandlerRegistration addDragOverHandler(DragOverHandler handler)
          Adds a DragOverEvent handler.
 HandlerRegistration addDragStartHandler(DragStartHandler handler)
          Adds a DragStartEvent handler.
 HandlerRegistration addDropHandler(DropHandler handler)
          Adds a DropEvent handler.
 HandlerRegistration addGestureChangeHandler(GestureChangeHandler handler)
          Adds a GestureChangeEvent handler.
 HandlerRegistration addGestureEndHandler(GestureEndHandler handler)
          Adds a GestureEndEvent handler.
 HandlerRegistration addGestureStartHandler(GestureStartHandler handler)
          Adds a GestureStartEvent handler.
 HandlerRegistration addMouseDownHandler(MouseDownHandler handler)
          Adds a MouseDownEvent handler.
 void addMouseListener(MouseListener listener)
          Deprecated. Use addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler), addMouseMoveHandler(com.google.gwt.event.dom.client.MouseMoveHandler), addMouseDownHandler(com.google.gwt.event.dom.client.MouseDownHandler), addMouseUpHandler(com.google.gwt.event.dom.client.MouseUpHandler) and addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler) instead
 HandlerRegistration addMouseMoveHandler(MouseMoveHandler handler)
          Adds a MouseMoveEvent handler.
 HandlerRegistration addMouseOutHandler(MouseOutHandler handler)
          Adds a MouseOutEvent handler.
 HandlerRegistration addMouseOverHandler(MouseOverHandler handler)
          Adds a MouseOverEvent handler.
 HandlerRegistration addMouseUpHandler(MouseUpHandler handler)
          Adds a MouseUpEvent handler.
 HandlerRegistration addMouseWheelHandler(MouseWheelHandler handler)
          Adds a MouseWheelEvent handler.
 void addMouseWheelListener(MouseWheelListener listener)
          Deprecated. Use addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler) instead
 HandlerRegistration addTouchCancelHandler(TouchCancelHandler handler)
          Adds a TouchCancelEvent handler.
 HandlerRegistration addTouchEndHandler(TouchEndHandler handler)
          Adds a TouchEndEvent handler.
 HandlerRegistration addTouchMoveHandler(TouchMoveHandler handler)
          Adds a TouchMoveEvent handler.
 HandlerRegistration addTouchStartHandler(TouchStartHandler handler)
          Adds a TouchStartEvent handler.
 LeafValueEditor<java.lang.String> asEditor()
          Returns the Editor encapsulated by the view object.
 HasDirection.Direction getDirection()
          Deprecated. Use getTextDirection() instead
 java.lang.String getText()
          Gets this object's text.
 HasDirection.Direction getTextDirection()
          Gets the direction of this object's text.
 void removeClickListener(ClickListener listener)
          Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by addClickHandler(com.google.gwt.event.dom.client.ClickHandler) instead
 void removeMouseListener(MouseListener listener)
          Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by an add*Handler method instead
 void removeMouseWheelListener(MouseWheelListener listener)
          Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler) instead
 void setDirection(HasDirection.Direction direction)
          Deprecated. Use LabelBase.setDirectionEstimator(boolean) and / or pass explicit direction to setText(java.lang.String) instead
 void setText(java.lang.String text)
          Sets the label's content to the given text.
 void setText(java.lang.String text, HasDirection.Direction dir)
          Sets the label's content to the given text, applying the given direction.
static Label wrap(Element element)
          Creates a Label widget that wraps an existing <div> or <span> element.
 
Methods inherited from class com.google.gwt.user.client.ui.LabelBase
getAutoHorizontalAlignment, getDirectionEstimator, getHorizontalAlignment, getWordWrap, setAutoHorizontalAlignment, setDirectionEstimator, setDirectionEstimator, setHorizontalAlignment, setWordWrap, updateHorizontalAlignment
 
Methods inherited from class com.google.gwt.user.client.ui.Widget
addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, ensureHandlers, fireEvent, getHandlerCount, getHandlerManager, getLayoutData, getParent, isAttached, isOrWasAttached, onAttach, onBrowserEvent, onDetach, 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, resolvePotentialElement, 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
 

Field Detail

DEFAULT_DIRECTION_ESTIMATOR

public static final DirectionEstimator DEFAULT_DIRECTION_ESTIMATOR
Constructor Detail

Label

public Label()
Creates an empty label.

Label

public Label(java.lang.String text)
Creates a label with the specified text.

Parameters:
text - the new label's text

Label

public Label(java.lang.String text,
             HasDirection.Direction dir)
Creates a label with the specified text and direction.

Parameters:
text - the new label's text
dir - the text's direction. Note that DEFAULT means direction should be inherited from the widget's parent element.

Label

public Label(java.lang.String text,
             DirectionEstimator directionEstimator)
Creates a label with the specified text and a default direction estimator.

Parameters:
text - the new label's text
directionEstimator - A DirectionEstimator object used for automatic direction adjustment. For convenience, DEFAULT_DIRECTION_ESTIMATOR can be used.

Label

public Label(java.lang.String text,
             boolean wordWrap)
Creates a label with the specified text.

Parameters:
text - the new label's text
wordWrap - false to disable word wrapping

Label

protected Label(Element element)
This constructor may be used by subclasses to explicitly use an existing element. This element must be either a <div> or <span> element.

Parameters:
element - the element to be used
Method Detail

wrap

public static Label wrap(Element element)
Creates a Label widget that wraps an existing <div> or <span> 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:
element - the element to be wrapped

addClickHandler

public HandlerRegistration addClickHandler(ClickHandler handler)
Description copied from interface: HasClickHandlers
Adds a ClickEvent handler.

Specified by:
addClickHandler in interface HasClickHandlers
Parameters:
handler - the click handler
Returns:
HandlerRegistration used to remove this handler

addClickListener

@Deprecated
public void addClickListener(ClickListener listener)
Deprecated. Use addClickHandler(com.google.gwt.event.dom.client.ClickHandler) instead

Description copied from interface: SourcesClickEvents
Adds a listener interface to receive click events.

Specified by:
addClickListener in interface SourcesClickEvents
Parameters:
listener - the listener interface to add

addDoubleClickHandler

public HandlerRegistration addDoubleClickHandler(DoubleClickHandler handler)
Description copied from interface: HasDoubleClickHandlers
Adds a DoubleClickEvent handler.

Specified by:
addDoubleClickHandler in interface HasDoubleClickHandlers
Parameters:
handler - the double click handler
Returns:
HandlerRegistration used to remove this handler

addDragEndHandler

public HandlerRegistration addDragEndHandler(DragEndHandler handler)
Description copied from interface: HasDragEndHandlers
Adds a DragEndEvent handler.

Specified by:
addDragEndHandler in interface HasDragEndHandlers
Parameters:
handler - the drag end handler
Returns:
HandlerRegistration used to remove this handler

addDragEnterHandler

public HandlerRegistration addDragEnterHandler(DragEnterHandler handler)
Description copied from interface: HasDragEnterHandlers
Adds a DragEnterEvent handler.

Specified by:
addDragEnterHandler in interface HasDragEnterHandlers
Parameters:
handler - the drag end handler
Returns:
HandlerRegistration used to remove this handler

addDragHandler

public HandlerRegistration addDragHandler(DragHandler handler)
Description copied from interface: HasDragHandlers
Adds a DragEvent handler.

Specified by:
addDragHandler in interface HasDragHandlers
Parameters:
handler - the drag handler
Returns:
HandlerRegistration used to remove this handler

addDragLeaveHandler

public HandlerRegistration addDragLeaveHandler(DragLeaveHandler handler)
Description copied from interface: HasDragLeaveHandlers
Adds a DragLeaveEvent handler.

Specified by:
addDragLeaveHandler in interface HasDragLeaveHandlers
Parameters:
handler - the drag leave handler
Returns:
HandlerRegistration used to remove this handler

addDragOverHandler

public HandlerRegistration addDragOverHandler(DragOverHandler handler)
Description copied from interface: HasDragOverHandlers
Adds a DragOverEvent handler.

Specified by:
addDragOverHandler in interface HasDragOverHandlers
Parameters:
handler - the drag over handler
Returns:
HandlerRegistration used to remove this handler

addDragStartHandler

public HandlerRegistration addDragStartHandler(DragStartHandler handler)
Description copied from interface: HasDragStartHandlers
Adds a DragStartEvent handler.

Specified by:
addDragStartHandler in interface HasDragStartHandlers
Parameters:
handler - the drag start handler
Returns:
HandlerRegistration used to remove this handler

addDropHandler

public HandlerRegistration addDropHandler(DropHandler handler)
Description copied from interface: HasDropHandlers
Adds a DropEvent handler.

Specified by:
addDropHandler in interface HasDropHandlers
Parameters:
handler - the drop handler
Returns:
HandlerRegistration used to remove this handler

addGestureChangeHandler

public HandlerRegistration addGestureChangeHandler(GestureChangeHandler handler)
Description copied from interface: HasGestureChangeHandlers
Adds a GestureChangeEvent handler.

Specified by:
addGestureChangeHandler in interface HasGestureChangeHandlers
Parameters:
handler - the gesture change handler
Returns:
HandlerRegistration used to remove this handler

addGestureEndHandler

public HandlerRegistration addGestureEndHandler(GestureEndHandler handler)
Description copied from interface: HasGestureEndHandlers
Adds a GestureEndEvent handler.

Specified by:
addGestureEndHandler in interface HasGestureEndHandlers
Parameters:
handler - the gesture end handler
Returns:
HandlerRegistration used to remove this handler

addGestureStartHandler

public HandlerRegistration addGestureStartHandler(GestureStartHandler handler)
Description copied from interface: HasGestureStartHandlers
Adds a GestureStartEvent handler.

Specified by:
addGestureStartHandler in interface HasGestureStartHandlers
Parameters:
handler - the gesture start handler
Returns:
HandlerRegistration used to remove this handler

addMouseDownHandler

public HandlerRegistration addMouseDownHandler(MouseDownHandler handler)
Description copied from interface: HasMouseDownHandlers
Adds a MouseDownEvent handler.

Specified by:
addMouseDownHandler in interface HasMouseDownHandlers
Parameters:
handler - the mouse down handler
Returns:
HandlerRegistration used to remove this handler

addMouseListener

@Deprecated
public void addMouseListener(MouseListener listener)
Deprecated. Use addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler), addMouseMoveHandler(com.google.gwt.event.dom.client.MouseMoveHandler), addMouseDownHandler(com.google.gwt.event.dom.client.MouseDownHandler), addMouseUpHandler(com.google.gwt.event.dom.client.MouseUpHandler) and addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler) instead

Description copied from interface: SourcesMouseEvents
Adds a listener interface to receive mouse events.

Specified by:
addMouseListener in interface SourcesMouseEvents
Parameters:
listener - the listener interface to add

addMouseMoveHandler

public HandlerRegistration addMouseMoveHandler(MouseMoveHandler handler)
Description copied from interface: HasMouseMoveHandlers
Adds a MouseMoveEvent handler.

Specified by:
addMouseMoveHandler in interface HasMouseMoveHandlers
Parameters:
handler - the mouse move handler
Returns:
HandlerRegistration used to remove this handler

addMouseOutHandler

public HandlerRegistration addMouseOutHandler(MouseOutHandler handler)
Description copied from interface: HasMouseOutHandlers
Adds a MouseOutEvent handler.

Specified by:
addMouseOutHandler in interface HasMouseOutHandlers
Parameters:
handler - the mouse out handler
Returns:
HandlerRegistration used to remove this handler

addMouseOverHandler

public HandlerRegistration addMouseOverHandler(MouseOverHandler handler)
Description copied from interface: HasMouseOverHandlers
Adds a MouseOverEvent handler.

Specified by:
addMouseOverHandler in interface HasMouseOverHandlers
Parameters:
handler - the mouse over handler
Returns:
HandlerRegistration used to remove this handler

addMouseUpHandler

public HandlerRegistration addMouseUpHandler(MouseUpHandler handler)
Description copied from interface: HasMouseUpHandlers
Adds a MouseUpEvent handler.

Specified by:
addMouseUpHandler in interface HasMouseUpHandlers
Parameters:
handler - the mouse up handler
Returns:
HandlerRegistration used to remove this handler

addMouseWheelHandler

public HandlerRegistration addMouseWheelHandler(MouseWheelHandler handler)
Description copied from interface: HasMouseWheelHandlers
Adds a MouseWheelEvent handler.

Specified by:
addMouseWheelHandler in interface HasMouseWheelHandlers
Parameters:
handler - the mouse wheel handler
Returns:
HandlerRegistration used to remove this handler

addMouseWheelListener

@Deprecated
public void addMouseWheelListener(MouseWheelListener listener)
Deprecated. Use addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler) instead

addTouchCancelHandler

public HandlerRegistration addTouchCancelHandler(TouchCancelHandler handler)
Description copied from interface: HasTouchCancelHandlers
Adds a TouchCancelEvent handler.

Specified by:
addTouchCancelHandler in interface HasTouchCancelHandlers
Parameters:
handler - the touch cancel handler
Returns:
HandlerRegistration used to remove this handler

addTouchEndHandler

public HandlerRegistration addTouchEndHandler(TouchEndHandler handler)
Description copied from interface: HasTouchEndHandlers
Adds a TouchEndEvent handler.

Specified by:
addTouchEndHandler in interface HasTouchEndHandlers
Parameters:
handler - the touch end handler
Returns:
HandlerRegistration used to remove this handler

addTouchMoveHandler

public HandlerRegistration addTouchMoveHandler(TouchMoveHandler handler)
Description copied from interface: HasTouchMoveHandlers
Adds a TouchMoveEvent handler.

Specified by:
addTouchMoveHandler in interface HasTouchMoveHandlers
Parameters:
handler - the touch move handler
Returns:
HandlerRegistration used to remove this handler

addTouchStartHandler

public HandlerRegistration addTouchStartHandler(TouchStartHandler handler)
Description copied from interface: HasTouchStartHandlers
Adds a TouchStartEvent handler.

Specified by:
addTouchStartHandler in interface HasTouchStartHandlers
Parameters:
handler - the touch start handler
Returns:
HandlerRegistration used to remove this handler

asEditor

public LeafValueEditor<java.lang.String> asEditor()
Description copied from interface: IsEditor
Returns the Editor encapsulated by the view object.

Specified by:
asEditor in interface IsEditor<LeafValueEditor<java.lang.String>>
Returns:
an Editor of type E

getDirection

@Deprecated
public HasDirection.Direction getDirection()
Deprecated. Use getTextDirection() instead

Gets the widget element's direction.

Specified by:
getDirection in interface HasDirection
Returns:
RTL if the directionality is right-to-left, LTR if the directionality is left-to-right, or DEFAULT if the directionality is not explicitly specified

getText

public java.lang.String getText()
Description copied from interface: HasText
Gets this object's text.

Specified by:
getText in interface HasText
Returns:
the object's text

getTextDirection

public HasDirection.Direction getTextDirection()
Description copied from interface: HasDirectionalText
Gets the direction of this object's text.

Specified by:
getTextDirection in interface HasDirectionalText
Returns:
the direction of this object's text

removeClickListener

@Deprecated
public void removeClickListener(ClickListener listener)
Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by addClickHandler(com.google.gwt.event.dom.client.ClickHandler) 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

removeMouseListener

@Deprecated
public void removeMouseListener(MouseListener listener)
Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by an add*Handler method instead

Description copied from interface: SourcesMouseEvents
Removes a previously added listener interface.

Specified by:
removeMouseListener in interface SourcesMouseEvents
Parameters:
listener - the listener interface to remove

removeMouseWheelListener

@Deprecated
public void removeMouseWheelListener(MouseWheelListener listener)
Deprecated. Use the HandlerRegistration.removeHandler() method on the object returned by addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler) instead

setDirection

@Deprecated
public void setDirection(HasDirection.Direction direction)
Deprecated. Use LabelBase.setDirectionEstimator(boolean) and / or pass explicit direction to setText(java.lang.String) instead

Sets the widget element's direction.

Specified by:
setDirection in interface HasDirection
Parameters:
direction - RTL if the directionality should be set to right-to-left, LTR if the directionality should be set to left-to-right DEFAULT if the directionality should not be explicitly set

setText

public void setText(java.lang.String text)
Sets the label's content to the given text.

Doesn't change the widget's direction or horizontal alignment if directionEstimator is null. Otherwise, the widget's direction is set using the estimator, and its alignment may therefore change as described in setText(String, Direction).

Specified by:
setText in interface HasText
Parameters:
text - the widget's new text

setText

public void setText(java.lang.String text,
                    HasDirection.Direction dir)
Sets the label's content to the given text, applying the given direction.

This will have the following effect on the horizontal alignment:

Specified by:
setText in interface HasDirectionalText
Parameters:
text - the widget's new text
dir - the text's direction. Note: Direction.DEFAULT means direction should be inherited from the widget's parent element.
Overview  Package   Class  Use  Deprecated  Help 
GWT 2.7.0
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