public class TextArea extends TextBoxBase
ValueBoxBase.setDirectionEstimator(boolean),
and is available by default when at least one of the application's locales is
right-to-left.
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);
}
}
TextBoxBase.TextAlignConstantValueBoxBase.TextAlignmentUIObject.DebugIdImpl, UIObject.DebugIdImplEnabledHasDirection.DirectionALIGN_CENTER, ALIGN_JUSTIFY, ALIGN_LEFT, ALIGN_RIGHTeventsToSinkDEBUG_ID_PREFIX, MISSING_ELEMENT_ERROR, SETELEMENT_TWICE_ERROR| Modifier | Constructor and Description |
|---|---|
|
TextArea()
Creates an empty text area.
|
protected |
TextArea(Element element)
This constructor may be used by subclasses to explicitly use an existing
element.
|
| Modifier and Type | Method and Description |
|---|---|
int |
getCharacterWidth()
Gets the requested width of the text box (this is not an exact value, as
not all characters are created equal).
|
int |
getCursorPos()
Gets the current position of the cursor (this also serves as the beginning
of the text selection).
|
int |
getSelectionLength()
Gets the length of the current text selection.
|
int |
getVisibleLines()
Gets the number of text lines that are visible.
|
void |
setCharacterWidth(int width)
Sets the requested width of the text box (this is not an exact value, as
not all characters are created equal).
|
void |
setVisibleLines(int lines)
Sets the number of text lines that are visible.
|
static TextArea |
wrap(Element element)
Creates a TextArea widget that wraps an existing <textarea>
element.
|
addChangeListener, getValue, setTextAlignmentaddChangeHandler, addValueChangeHandler, asEditor, cancelKey, getDirection, getDirectionEstimator, getImpl, getName, getSelectedText, getText, getValueOrThrow, isReadOnly, onBrowserEvent, onLoad, removeChangeListener, selectAll, setAlignment, setCursorPos, setDirection, setDirectionEstimator, setDirectionEstimator, setKey, setName, setReadOnly, setSelectionRange, setText, setValue, setValueaddBlurHandler, 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, setTabIndexaddAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, ensureHandlers, fireEvent, getHandlerCount, getHandlerManager, getLayoutData, getParent, isAttached, isOrWasAttached, onDetach, onUnload, removeFromParent, replaceElement, setLayoutData, setParent, sinkEvents, unsinkEventsaddStyleDependentName, 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, toStringclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitremoveChangeListeneraddKeyUpHandlerfireEventpublic TextArea()
protected TextArea(Element element)
element - the element to be usedpublic static TextArea wrap(Element element)
RootPanel.detachNow(Widget).element - the element to be wrappedpublic int getCharacterWidth()
public int getCursorPos()
ValueBoxBasegetCursorPos in class ValueBoxBase<java.lang.String>public int getSelectionLength()
ValueBoxBasegetSelectionLength in class ValueBoxBase<java.lang.String>public int getVisibleLines()
public void setCharacterWidth(int width)
width - the requested width, in characterspublic void setVisibleLines(int lines)
lines - the number of visible lines