javax.swing

Класс JTextField

java.lang. Объект

java.awt. Компонент

java.awt. Контейнер

javax.swing. JComponent

javax.swing.text. JTextComponent

javax.swing. JTextField

Все Реализованные Интерфейсы:

ImageObserver, MenuContainer, Сериализуемый, Доступный, С возможностью прокрутки, SwingConstants

Прямые Известные Подклассы:

DefaultTreeCellEditor. DefaultTextField, JFormattedTextField, JPasswordField

public class JTextField
extends JTextComponent
implements SwingConstants

JTextField легкий компонент, который позволяет редактирование одной строки текста. Для получения информации об и примеры использования текстовых полей, см., Как Использовать Текстовые поля в Учебном руководстве по Java.

JTextField предназначается, чтобы быть совместимым с источником с java.awt.TextField где разумно сделать так. У этого компонента есть возможности, не найденные в java.awt.TextField класс. С суперклассом нужно консультироваться для дополнительных возможностей.

JTextField имеет метод, чтобы установить строку, используемую в качестве командной строки для события действия, которое запускается. java.awt.TextField используемый текст поля как командная строка для ActionEvent. JTextField будет использовать набор командной строки с setActionCommand метод, если нет null, иначе это будет использовать текст поля как совместимость с java.awt.TextField.

Метод setEchoChar и getEchoChar не обеспечиваются непосредственно, чтобы избежать новой реализации сменного стили, непреднамеренно представляющего символы пароля. Предоставлять подобные паролю услуги отдельный класс JPasswordField расширяется JTextField предоставлять эту услугу с независимо сменным стилем.

java.awt.TextField мог контролироваться для изменений, добавляя a TextListener для TextEvent's. В JTextComponent основанные компоненты, изменения передаются от модели через a DocumentEvent к DocumentListeners. DocumentEvent дает расположение изменения и вид изменения при желании. Фрагмент кода мог бы смотреть что-то как:

  DocumentListener myListener = ??;
  JTextField myArea = ??;
  myArea.getDocument().addDocumentListener(myListener);
 

Выравнивание по горизонтали JTextField может быть установлен быть оставленным выровненным по ширине, ведя выровненный по ширине, центрироваться, выровненный по правому краю или запаздывая выровненный по ширине. Выравнивание права/запаздывания полезно, если необходимый размер полевого текста меньше чем размер, выделенный ему. Это определяется setHorizontalAlignment и getHorizontalAlignment методы. Значение по умолчанию должно вести выровненный по ширине.

То, как текстовое поле использует события VK_ENTER, зависит от того, есть ли у текстового поля какие-либо слушатели действия. Если так, тогда результаты VK_ENTER в слушателях, получающих ActionEvent, и событие VK_ENTER, используются. Это является совместимым с тем, как текстовые поля AWT обрабатывают события VK_ENTER. Если у текстового поля нет никаких слушателей действия, то с v 1.3 событие VK_ENTER не используется. Вместо этого привязка компонентов предка обрабатывается, который активирует опцию кнопки по умолчанию JFC/Swing, чтобы работать.

Специализированные поля могут легко быть созданы, расширяя модель и изменяя обеспеченную модель по умолчанию. Например, следующая часть кода создаст поле, которое содержит только символы верхнего регистра. Это будет работать, даже если текст будет вставляться в от буфера обмена, или это изменяется через программируемые изменения.

 public class UpperCaseField extends JTextField {
 
 public UpperCaseField(int cols) {
 super(cols);
 }
 
 protected Document createDefaultModel() {
 return new UpperCaseDocument();
 }
 
 static class UpperCaseDocument extends PlainDocument {
 
 public void insertString(int offs, String str, AttributeSet a)
 throws BadLocationException {
 
 if (str == null) {
 return;
 }
 char[] upper = str.toCharArray();
 for (int i = 0; i < upper.length; i++) {
                 upper[i] = Character.toUpperCase(upper[i]);
             }
             super.insertString(offs, new String(upper), a);
         }
     }
 }

 

Warning: Swing is not thread safe. For more information see Swing's Threading Policy.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

See Also:

setActionCommand(java.lang.String), JPasswordField, addActionListener(java.awt.event.ActionListener)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	JTextField. AccessibleJTextField This class implements accessibility support for the JTextField class.

Nested classes/interfaces inherited from class javax.swing.text.JTextComponent

JTextComponent.AccessibleJTextComponent, JTextComponent.DropLocation, JTextComponent.KeyBinding

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent. AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Контейнер. AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field and Description
static String	notifyAction Name of the action to send notification that the contents of the field have been accepted.

Fields inherited from class javax.swing.text.JTextComponent

DEFAULT_KEYMAP, FOCUS_ACCELERATOR_KEY

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor and Description
JTextField() Constructs a new TextField.
JTextField(Document doc, String text, int columns) Constructs a new JTextField that uses the given text storage model and the given number of columns.
JTextField(int columns) Constructs a new empty TextField with the specified number of columns.
JTextField(String text) Constructs a new TextField initialized with the specified text.
JTextField(String text, int columns) Constructs a new TextField initialized with the specified text and columns.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	actionPropertyChanged(Action action, String propertyName) Updates the textfield's state in response to property changes in associated action.
void	addActionListener(ActionListener l) Adds the specified action listener to receive action events from this textfield.
protected void	configurePropertiesFromAction(Action a) Sets the properties on this textfield to match those in the specified Action.
protected PropertyChangeListener	createActionPropertyChangeListener(Action a) Creates and returns a PropertyChangeListener that is responsible for listening for changes from the specified Action and updating the appropriate properties.
protected Document	createDefaultModel() Creates the default implementation of the model to be used at construction if one isn't explicitly given.
protected void	fireActionPerformed() Notifies all listeners that have registered interest for notification on this event type.
AccessibleContext	getAccessibleContext() Gets the AccessibleContext associated with this JTextField.
Действие	getAction() Returns the currently set Action for this ActionEvent source, or null if no Action is set.
ActionListener[]	getActionListeners() Returns an array of all the ActionListeners added to this JTextField with addActionListener().
Действие[]	getActions() Fetches the command list for the editor.
int	getColumns() Returns the number of columns in this TextField.
protected int	getColumnWidth() Returns the column width.
int	getHorizontalAlignment() Returns the horizontal alignment of the text.
BoundedRangeModel	getHorizontalVisibility() Gets the visibility of the text field.
Размерность	getPreferredSize() Returns the preferred size Dimensions needed for this TextField.
int	getScrollOffset() Gets the scroll offset, in pixels.
Строка	getUIClassID() Gets the class ID for a UI.
boolean	isValidateRoot() Calls to revalidate that come from within the textfield itself will be handled by validating the textfield, unless the textfield is contained within a JViewport, in which case this returns false.
protected String	paramString() Returns a string representation of this JTextField.
void	postActionEvent() Processes action events occurring on this textfield by dispatching them to any registered ActionListener objects.
void	removeActionListener(ActionListener l) Removes the specified action listener so that it no longer receives action events from this textfield.
void	scrollRectToVisible(Rectangle r) Scrolls the field left or right.
void	setAction(Action a) Sets the Action for the ActionEvent source.
void	setActionCommand(String command) Sets the command string used for action events.
void	setColumns(int columns) Sets the number of columns in this TextField, and then invalidate the layout.
void	setDocument(Document doc) Associates the editor with a text document.
void	setFont(Font f) Sets the current font.
void	setHorizontalAlignment(int alignment) Sets the horizontal alignment of the text.
void	setScrollOffset(int scrollOffset) Sets the scroll offset, in pixels.

Methods inherited from class javax.swing.text.JTextComponent

addCaretListener, addInputMethodListener, addKeymap, copy, cut, fireCaretUpdate, getCaret, getCaretColor, getCaretListeners, getCaretPosition, getDisabledTextColor, getDocument, getDragEnabled, getDropLocation, getDropMode, getFocusAccelerator, getHighlighter, getInputMethodRequests, getKeymap, getKeymap, getMargin, getNavigationFilter, getPreferredScrollableViewportSize, getPrintable, getScrollableBlockIncrement, getScrollableTracksViewportHeight, getScrollableTracksViewportWidth, getScrollableUnitIncrement, getSelectedText, getSelectedTextColor, getSelectionColor, getSelectionEnd, getSelectionStart, getText, getText, getToolTipText, getUI, isEditable, loadKeymap, modelToView, moveCaretPosition, paste, print, print, print, processInputMethodEvent, read, removeCaretListener, removeKeymap, removeNotify, replaceSelection, restoreComposedText, saveComposedText, select, selectAll, setCaret, setCaretColor, setCaretPosition, setComponentOrientation, setDisabledTextColor, setDragEnabled, setDropMode, setEditable, setFocusAccelerator, setHighlighter, setKeymap, setMargin, setNavigationFilter, setSelectedTextColor, setSelectionColor, setSelectionEnd, setSelectionStart, setText, setUI, updateUI, viewToModel, write

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

notifyAction

public static final String notifyAction

Name of the action to send notification that the contents of the field have been accepted. Typically this is bound to a carriage-return.

See Also:

Constant Field Values

Constructor Detail

JTextField

public JTextField()

Constructs a new TextField. A default model is created, the initial string is null, and the number of columns is set to 0.

JTextField

public JTextField(String text)

Constructs a new TextField initialized with the specified text. A default model is created and the number of columns is 0.

Parameters:

text - the text to be displayed, or null

JTextField

public JTextField(int columns)

Constructs a new empty TextField with the specified number of columns. A default model is created and the initial string is set to null.

Parameters:

columns - the number of columns to use to calculate the preferred width; if columns is set to zero, the preferred width will be whatever naturally results from the component implementation

JTextField

public JTextField(String text,
          int columns)

Constructs a new TextField initialized with the specified text and columns. A default model is created.

Parameters:

text - the text to be displayed, or null

columns - the number of columns to use to calculate the preferred width; if columns is set to zero, the preferred width will be whatever naturally results from the component implementation

JTextField

public JTextField(Document doc,
          String text,
          int columns)

Constructs a new JTextField that uses the given text storage model and the given number of columns. This is the constructor through which the other constructors feed. If the document is null, a default model is created.

Parameters:

doc - the text storage to use; if this is null, a default will be provided by calling the createDefaultModel method

text - the initial string to display, or null

columns - the number of columns to use to calculate the preferred width >= 0; if columns is set to zero, the preferred width will be whatever naturally results from the component implementation

Throws:

IllegalArgumentException - if columns < 0

Method Detail

getUIClassID

public String getUIClassID()

Gets the class ID for a UI.

Overrides:

getUIClassID in class JComponent

Returns:

the string "TextFieldUI"

See Also:

JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

setDocument

public void setDocument(Document doc)

Associates the editor with a text document. The currently registered factory is used to build a view for the document, which gets displayed by the editor after revalidation. A PropertyChange event ("document") is propagated to each listener.

Overrides:

setDocument in class JTextComponent

Parameters:

doc - the document to display/edit

See Also:

JTextComponent.getDocument()

isValidateRoot

public boolean isValidateRoot()

Calls to revalidate that come from within the textfield itself will be handled by validating the textfield, unless the textfield is contained within a JViewport, in which case this returns false.

Overrides:

isValidateRoot in class JComponent

Returns:

if the parent of this textfield is a JViewPort return false, otherwise return true

See Also:

JComponent.revalidate(), JComponent.isValidateRoot(), Container.isValidateRoot()

getHorizontalAlignment

public int getHorizontalAlignment()

Returns the horizontal alignment of the text. Valid keys are:

• JTextField.LEFT
• JTextField.CENTER
• JTextField.RIGHT
• JTextField.LEADING
• JTextField.TRAILING

Returns:

the horizontal alignment

setHorizontalAlignment

public void setHorizontalAlignment(int alignment)

Sets the horizontal alignment of the text. Valid keys are:

• JTextField.LEFT
• JTextField.CENTER
• JTextField.RIGHT
• JTextField.LEADING
• JTextField.TRAILING

invalidate and repaint are called when the alignment is set, and a PropertyChange event ("horizontalAlignment") is fired.

Parameters:

alignment - the alignment

Throws:

IllegalArgumentException - if alignment is not a valid key

createDefaultModel

protected Document createDefaultModel()

Creates the default implementation of the model to be used at construction if one isn't explicitly given. An instance of PlainDocument is returned.

Returns:

the default model implementation

getColumns

public int getColumns()

Returns the number of columns in this TextField.

Returns:

the number of columns >= 0

setColumns

public void setColumns(int columns)

Sets the number of columns in this TextField, and then invalidate the layout.

Parameters:

columns - the number of columns >= 0

Throws:

IllegalArgumentException - if columns is less than 0

getColumnWidth

protected int getColumnWidth()

Returns the column width. The meaning of what a column is can be considered a fairly weak notion for some fonts. This method is used to define the width of a column. By default this is defined to be the width of the character m for the font used. This method can be redefined to be some alternative amount

Returns:

the column width >= 1

getPreferredSize

public Dimension getPreferredSize()

Returns the preferred size Dimensions needed for this TextField. If a non-zero number of columns has been set, the width is set to the columns multiplied by the column width.

Overrides:

getPreferredSize in class JComponent

Returns:

the dimension of this textfield

See Also:

JComponent.setPreferredSize(java.awt.Dimension), ComponentUI

setFont

public void setFont(Font f)

Sets the current font. This removes cached row height and column width so the new font will be reflected. revalidate is called after setting the font.

Overrides:

setFont in class JComponent

Parameters:

f - the new font

See Also:

Component.getFont()

addActionListener

public void addActionListener(ActionListener l)

Adds the specified action listener to receive action events from this textfield.

Parameters:

l - the action listener to be added

removeActionListener

public void removeActionListener(ActionListener l)

Removes the specified action listener so that it no longer receives action events from this textfield.

Parameters:

l - the action listener to be removed

getActionListeners

public ActionListener[] getActionListeners()

Returns an array of all the ActionListeners added to this JTextField with addActionListener().

Returns:

all of the ActionListeners added or an empty array if no listeners have been added

Since:

1.4

fireActionPerformed

protected void fireActionPerformed()

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created. The listener list is processed in last to first order.

See Also:

EventListenerList

setActionCommand

public void setActionCommand(String command)

Sets the command string used for action events.

Parameters:

command - the command string

setAction

public void setAction(Action a)

Sets the Action for the ActionEvent source. The new Action replaces any previously set Action but does not affect ActionListeners independently added with addActionListener. If the Action is already a registered ActionListener for the ActionEvent source, it is not re-registered.

Setting the Action results in immediately changing all the properties described in Swing Components Supporting Action. Subsequently, the textfield's properties are automatically updated as the Action's properties change.

This method uses three other methods to set and help track the Action's property values. It uses the configurePropertiesFromAction method to immediately change the textfield's properties. To track changes in the Action's property values, this method registers the PropertyChangeListener returned by createActionPropertyChangeListener. The default PropertyChangeListener invokes the actionPropertyChanged method when a property in the Action changes.

Parameters:

a - the Action for the JTextField, or null

Since:

1.3

See Also:

Action, getAction(), configurePropertiesFromAction(javax.swing.Action), createActionPropertyChangeListener(javax.swing.Action), actionPropertyChanged(javax.swing.Action, java.lang.String)

getAction

public Action getAction()

Returns the currently set Action for this ActionEvent source, or null if no Action is set.

Returns:

the Action for this ActionEvent source, or null

Since:

1.3

See Also:

Action, setAction(javax.swing.Action)

configurePropertiesFromAction

protected void configurePropertiesFromAction(Action a)

Sets the properties on this textfield to match those in the specified Action. Refer to Swing Components Supporting Action for more details as to which properties this sets.

Parameters:

a - the Action from which to get the properties, or null

Since:

1.3

See Also:

Action, setAction(javax.swing.Action)

actionPropertyChanged

protected void actionPropertyChanged(Action action,
                         String propertyName)

Updates the textfield's state in response to property changes in associated action. This method is invoked from the PropertyChangeListener returned from createActionPropertyChangeListener. Subclasses do not normally need to invoke this. Subclasses that support additional Action properties should override this and configurePropertiesFromAction.

Refer to the table at Swing Components Supporting Action for a list of the properties this method sets.

Parameters:

action - the Action associated with this textfield

propertyName - the name of the property that changed

Since:

1.6

See Also:

Action, configurePropertiesFromAction(javax.swing.Action)

createActionPropertyChangeListener

protected PropertyChangeListener createActionPropertyChangeListener(Action a)

Creates and returns a PropertyChangeListener that is responsible for listening for changes from the specified Action and updating the appropriate properties.

Warning: If you subclass this do not create an anonymous inner class. If you do the lifetime of the textfield will be tied to that of the Action.

Parameters:

a - the textfield's action

Since:

1.3

See Also:

Action, setAction(javax.swing.Action)

getActions

public Action[] getActions()

Fetches the command list for the editor. This is the list of commands supported by the plugged-in UI augmented by the collection of commands that the editor itself supports. These are useful for binding to events, such as in a keymap.

Overrides:

getActions in class JTextComponent

Returns:

the command list

postActionEvent

public void postActionEvent()

Processes action events occurring on this textfield by dispatching them to any registered ActionListener objects. This is normally called by the controller registered with textfield.

getHorizontalVisibility

public BoundedRangeModel getHorizontalVisibility()

Gets the visibility of the text field. This can be adjusted to change the location of the visible area if the size of the field is greater than the area that was allocated to the field.

The fields look-and-feel implementation manages the values of the minimum, maximum, and extent properties on the BoundedRangeModel.

Returns:

the visibility

See Also:

BoundedRangeModel

getScrollOffset

public int getScrollOffset()

Gets the scroll offset, in pixels.

Returns:

the offset >= 0

setScrollOffset

public void setScrollOffset(int scrollOffset)

Sets the scroll offset, in pixels.

Parameters:

scrollOffset - the offset >= 0

scrollRectToVisible

public void scrollRectToVisible(Rectangle r)

Scrolls the field left or right.

Overrides:

scrollRectToVisible in class JComponent

Parameters:

r - the region to scroll

See Also:

JViewport

paramString

protected String paramString()

Returns a string representation of this JTextField. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:

paramString in class JTextComponent

Returns:

a string representation of this JTextField

getAccessibleContext

public AccessibleContext getAccessibleContext()

Gets the AccessibleContext associated with this JTextField. For JTextFields, the AccessibleContext takes the form of an AccessibleJTextField. A new AccessibleJTextField instance is created if necessary.

Specified by:

getAccessibleContext in interface Accessible

Overrides:

getAccessibleContext in class JTextComponent

Returns:

an AccessibleJTextField that serves as the AccessibleContext of this JTextField