ValueBox (GWT Javadoc)

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## com.google.gwt.user.client.ui
Class ValueBox<T>

    java.lang.Object
      com.google.gwt.user.client.ui.UIObject
          com.google.gwt.user.client.ui.Widget
              com.google.gwt.user.client.ui.FocusWidget
                  com.google.gwt.user.client.ui.ValueBoxBase<T>
                      com.google.gwt.user.client.ui.ValueBox<T>

Type Parameters:
  `T` - the value type

All Implemented Interfaces:
  IsEditor<ValueBoxEditor<T>>, HasAllDragAndDropHandlers, HasAllFocusHandlers, HasAllGestureHandlers, HasAllKeyHandlers, HasAllMouseHandlers, HasAllTouchHandlers, HasBlurHandlers, HasChangeHandlers, HasClickHandlers, HasDoubleClickHandlers, HasDragEndHandlers, HasDragEnterHandlers, HasDragHandlers, HasDragLeaveHandlers, HasDragOverHandlers, HasDragStartHandlers, HasDropHandlers, HasFocusHandlers, HasGestureChangeHandlers, HasGestureEndHandlers, HasGestureStartHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasKeyUpHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasTouchCancelHandlers, HasTouchEndHandlers, HasTouchMoveHandlers, HasTouchStartHandlers, HasAttachHandlers, HasValueChangeHandlers<T>, HasHandlers, AutoDirectionHandler.Target, HasDirection, HasDirectionEstimator, EventListener, TakesValue<T>, Focusable, HasEnabled, HasFocus, HasName, HasText, HasValue<T>, HasVisibility, IsWidget, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents, SourcesMouseEvents

Direct Known Subclasses:
  DoubleBox, IntegerBox, LongBox

    public class ValueBox<T>

extends ValueBoxBase<T>

A text box able to parse its displayed value.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.ValueBoxBase
`ValueBoxBase.TextAlignment`

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`

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
`protected` | `ValueBox(Element element, Renderer<T> renderer, Parser<T> parser)` This constructor may be used by subclasses to explicitly use an existing element.

Method Summary
`int` | `getMaxLength()` Gets the maximum allowable length.
`int` | `getVisibleLength()` Gets the number of visible characters.
`void` | `setMaxLength(int length)` Sets the maximum allowable length.
`void` | `setVisibleLength(int length)` Sets the number of visible characters.
`static
`<T> ValueBox<T>`
` | `wrap(Element element, Renderer<T> renderer, Parser<T> parser)` Creates a ValueBox widget that wraps an existing <input type='text'> element.

Methods inherited from class com.google.gwt.user.client.ui.ValueBoxBase
`addChangeHandler, addValueChangeHandler, asEditor, cancelKey, getCursorPos, getDirection, getDirectionEstimator, getImpl, getName, getSelectedText, getSelectionLength, getText, getValue, getValueOrThrow, isReadOnly, onBrowserEvent, onLoad, removeChangeListener, selectAll, setAlignment, setCursorPos, setDirection, setDirectionEstimator, setDirectionEstimator, setKey, setName, setReadOnly, setSelectionRange, setText, setValue, setValue`

Methods inherited from class com.google.gwt.user.client.ui.FocusWidget
`addBlurHandler, addClickHandler, addClickListener, addDoubleClickHandler, addDragEndHandler, addDragEnterHandler, addDragHandler, addDragLeaveHandler, addDragOverHandler, addDragStartHandler, addDropHandler, addFocusHandler, addFocusListener, addGestureChangeHandler, addGestureEndHandler, addGestureStartHandler, addKeyboardListener, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, addMouseDownHandler, addMouseListener, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseUpHandler, addMouseWheelHandler, addMouseWheelListener, addTouchCancelHandler, addTouchEndHandler, addTouchMoveHandler, addTouchStartHandler, getFocusImpl, getTabIndex, isEnabled, onAttach, removeClickListener, removeFocusListener, removeKeyboardListener, removeMouseListener, removeMouseWheelListener, setAccessKey, setEnabled, setFocus, setTabIndex`

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, onDetach, 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.dom.client.HasKeyUpHandlers
`addKeyUpHandler`

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

Constructor Detail

### ValueBox

    protected ValueBox(Element element,
                       Renderer<T> renderer,
                       Parser<T> parser)

  This constructor may be used by subclasses to explicitly use an existing element. This element must be an <input> element whose type is 'text'.

  Parameters:
    `element` - the element to be used

Method Detail

### wrap

    public static <T> ValueBox<T> wrap(Element element,
                                       Renderer<T> renderer,
                                       Parser<T> parser)

  Creates a ValueBox 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:
    `element` - the element to be wrapped

### getMaxLength

    public int getMaxLength()

  Gets the maximum allowable length.

  Returns:
    the maximum length, in characters

### getVisibleLength

    public int getVisibleLength()

  Gets the number of visible characters.

  Returns:
    the number of visible characters

### setMaxLength

    public void setMaxLength(int length)

  Sets the maximum allowable length.

  Parameters:
    `length` - the maximum length, in characters

### setVisibleLength

    public void setVisibleLength(int length)

  Sets the number of visible characters.

  Parameters:
    `length` - the number of visible characters

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