com.google.gwt.user.client.ui

Class TextBox

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<java.lang.String>

com.google.gwt.user.client.ui.TextBoxBase

com.google.gwt.user.client.ui.TextBox

All Implemented Interfaces:

IsEditor<ValueBoxEditor<java.lang.String>>, 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<java.lang.String>, HasHandlers, AutoDirectionHandler.Target, HasDirection, HasDirectionEstimator, EventListener, TakesValue<java.lang.String>, Focusable, HasEnabled, HasFocus, HasName, HasText, HasValue<java.lang.String>, HasVisibility, IsWidget, SourcesChangeEvents, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents, SourcesMouseEvents

Direct Known Subclasses:

PasswordTextBox

public class TextBox
extends TextBoxBase

A standard single-line text box.

CSS Style Rules

• .gwt-TextBox { primary style }
• .gwt-TextBox-readonly { dependent style set when the text box is read-only }

Built-in Bidi Text Support

This widget is capable of automatically adjusting its direction according to the input text. This feature is controlled by ValueBoxBase.setDirectionEstimator(boolean), and is available by default when at least one of the application's locales is right-to-left.

Example

public class TextBoxExample implements EntryPoint {

  public void onModuleLoad() {
    // Make some text boxes. The password text box is identical to the text
    // box, except that the input is visually masked by the browser.
    PasswordTextBox ptb = new PasswordTextBox();
    TextBox tb = new TextBox();

    // TODO(ECC) must be tested.
    tb.addKeyPressHandler(new KeyPressHandler() {

      public void onKeyPress(KeyPressEvent event) {
        if (!Character.isDigit(event.getCharCode())) {
          ((TextBox) event.getSource()).cancelKey();
        }
      }
    });

    // Let's make an 80x50 text area to go along with the other two.
    TextArea ta = new TextArea();
    ta.setCharacterWidth(80);
    ta.setVisibleLines(50);

    // Add them to the root panel.
    VerticalPanel panel = new VerticalPanel();
    panel.add(tb);
    panel.add(ptb);
    panel.add(ta);
    RootPanel.get().add(panel);
  }
}

Nested Class Summary

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

TextBoxBase.TextAlignConstant

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.TextBoxBase

ALIGN_CENTER, ALIGN_JUSTIFY, ALIGN_LEFT, ALIGN_RIGHT

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

Modifier	Constructor and Description
	TextBox() Creates an empty text box.
protected	TextBox(Element element) This constructor may be used by subclasses to explicitly use an existing element.
(package private)	TextBox(Element element, java.lang.String styleName)

Method Summary

Modifier and Type	Method and Description
int	getMaxLength() Gets the maximum allowable length of the text box.
int	getVisibleLength() Gets the number of visible characters in the text box.
void	setMaxLength(int length) Sets the maximum allowable length of the text box.
void	setVisibleLength(int length) Sets the number of visible characters in the text box.
static TextBox	wrap(Element element) Creates a TextBox widget that wraps an existing <input type='text'> element.

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

addChangeListener, getValue, setTextAlignment

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

addChangeHandler, addValueChangeHandler, asEditor, cancelKey, getCursorPos, getDirection, getDirectionEstimator, getImpl, getName, getSelectedText, getSelectionLength, getText, 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.user.client.ui.SourcesChangeEvents

removeChangeListener

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

TextBox

public TextBox()

Creates an empty text box.

TextBox

protected TextBox(Element element)

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

TextBox

TextBox(Element element,
        java.lang.String styleName)

Method Detail

wrap

public static TextBox wrap(Element element)

Creates a TextBox 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 of the text box.

Returns:

the maximum length, in characters

getVisibleLength

public int getVisibleLength()

Gets the number of visible characters in the text box.

Returns:

the number of visible characters

setMaxLength

public void setMaxLength(int length)

Sets the maximum allowable length of the text box.

Parameters:

length - the maximum length, in characters

setVisibleLength

public void setVisibleLength(int length)

Sets the number of visible characters in the text box.

Parameters:

length - the number of visible characters