Package de.stefanreiser.swing.text

Class JTextArea

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.text.JTextComponent
javax.swing.JTextArea
de.stefanreiser.swing.text.JTextArea
All Implemented Interfaces:
java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible, javax.swing.Scrollable
public class JTextArea
extends javax.swing.JTextArea
Ein Ersatz für javax.swing.JTextArea, ergänzt um typische Editor-Funktionen (Undo/Redo, Insert-/Overwrite-Mode).

Besitzt Umschaltung zwischen Insert- und Overwrite-Modus (Insert-Taste), besitzt Undo/Redo-Funktionen (Ctrl-Z, Ctrl-Y).

Die Undo/Redo-Historie wird beim Aufruf von setText() zurückgesetzt.

Undo/Redo sind an Tastenkombinationen gebunden: Ctrl-Z/Ctrl-Y. Mittels der Methoden getUndoAction() und getRedoAction() können außerdem Actions bezogen und z.B. an Schaltflächen gebunden werden, die dann automatisch aktiv oder inaktiv sind, je nachdem ob Undo/Redo möglich ist. (Siehe [1].)

Statt Actions mit zugewiesenen Tastenkombinationen zu verwenden ("How to Use Key Bindings" [2]), wurde hier zur Abfrage von Ctrl-Z und Ctr-Y die Methode keyPressed() eines KeyAdapters ("How to Write a Key Listener", [3]) benutzt. (FEATURE: Das könnte bei Gelegenheit ggf. mal geändert werten.) Derselbe KeyAdapter dient zum Anbinden der Insert-Taste.

[1] http://docs.oracle.com/javase/tutorial/uiswing/components/generaltext.html#undo
[2] http://docs.oracle.com/javase/tutorial/uiswing/misc/keybinding.html
[3] http://docs.oracle.com/javase/tutorial/uiswing/events/keylistener.html

Author:
Stefan
See Also:
Serialized Form

  • Nested Class Summary

    Nested Classes 
    Modifier and Type Class Description
    protected class  JTextArea.MyUndoableEditListener
    UndoableEditListener, aus Java-Tutorial (2012): http://docs.oracle.com/javase/tutorial/uiswing/components/generaltext.html#undo

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

    javax.swing.JTextArea.AccessibleJTextArea

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

    javax.swing.text.JTextComponent.AccessibleJTextComponent, javax.swing.text.JTextComponent.DropLocation, javax.swing.text.JTextComponent.KeyBinding

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

    javax.swing.JComponent.AccessibleJComponent

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

    java.awt.Container.AccessibleAWTContainer

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

    java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static java.lang.String REDO_TEXT  
    static java.lang.String UNDO_TEXT  

    Fields inherited from class javax.swing.text.JTextComponent

    DEFAULT_KEYMAP, FOCUS_ACCELERATOR_KEY

    Fields inherited from class javax.swing.JComponent

    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

    accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

    Fields inherited from interface java.awt.image.ImageObserver

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

  • Constructor Summary

    Constructors 
    Constructor Description
    JTextArea()  
    JTextArea​(int rows, int columns)  
    JTextArea​(java.lang.String text)  
    JTextArea​(java.lang.String text, int rows, int columns)  
    JTextArea​(javax.swing.text.Document doc)  
    JTextArea​(javax.swing.text.Document doc, java.lang.String text, int rows, int columns)  

  • Method Summary

    Modifier and Type Method Description
    javax.swing.Action getInsetModeAction()  
    javax.swing.Action getRedoAction()  
    javax.swing.Action getUndoAction()  
    void setDocument​(javax.swing.text.Document doc)  
    void setText​(java.lang.String text)
    Setzt Inhalt auf text, löscht Undo/Redo-Historie.

    Methods inherited from class javax.swing.JTextArea

    append, createDefaultModel, getAccessibleContext, getColumns, getColumnWidth, getLineCount, getLineEndOffset, getLineOfOffset, getLineStartOffset, getLineWrap, getPreferredScrollableViewportSize, getPreferredSize, getRowHeight, getRows, getScrollableTracksViewportWidth, getScrollableUnitIncrement, getTabSize, getUIClassID, getWrapStyleWord, insert, paramString, replaceRange, setColumns, setFont, setLineWrap, setRows, setTabSize, setWrapStyleWord

    Methods inherited from class javax.swing.text.JTextComponent

    addCaretListener, addInputMethodListener, addKeymap, copy, cut, fireCaretUpdate, getActions, getCaret, getCaretColor, getCaretListeners, getCaretPosition, getDisabledTextColor, getDocument, getDragEnabled, getDropLocation, getDropMode, getFocusAccelerator, getHighlighter, getInputMethodRequests, getKeymap, getKeymap, getMargin, getNavigationFilter, getPrintable, getScrollableBlockIncrement, getScrollableTracksViewportHeight, getSelectedText, getSelectedTextColor, getSelectionColor, getSelectionEnd, getSelectionStart, getText, getText, getToolTipText, getUI, isEditable, loadKeymap, modelToView, modelToView2D, 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, setUI, updateUI, viewToModel, viewToModel2D, 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, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, 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, scrollRectToVisible, 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, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, 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, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, 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 Details

  • Constructor Details

    • JTextArea

      public JTextArea​(javax.swing.text.Document doc, java.lang.String text, int rows, int columns)

    • JTextArea

      public JTextArea​(javax.swing.text.Document doc)

    • JTextArea

      public JTextArea​(java.lang.String text, int rows, int columns)

    • JTextArea

      public JTextArea​(int rows, int columns)

    • JTextArea

      public JTextArea​(java.lang.String text)

    • JTextArea

      public JTextArea()

  • Method Details

    • setDocument

      public void setDocument​(javax.swing.text.Document doc)
      Overrides:
      setDocument in class javax.swing.text.JTextComponent

    • setText

      public void setText​(java.lang.String text)
      Setzt Inhalt auf text, löscht Undo/Redo-Historie.
      Overrides:
      setText in class javax.swing.text.JTextComponent
      Parameters:
      text -

    • getUndoAction

      public javax.swing.Action getUndoAction()

    • getRedoAction

      public javax.swing.Action getRedoAction()

    • getInsetModeAction

      public javax.swing.Action getInsetModeAction()