com.jidesoft.swing
Class AutoResizingTextArea

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.text.JTextComponent
                  javax.swing.JTextArea
                      com.jidesoft.swing.AutoResizingTextArea

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible, Scrollable

public class AutoResizingTextArea
extends JTextArea

An extended version of JTextArea that automatically resizes itself vertically. This component works best when used in a layout that obeys preferred height of its components. For example, you can use a BorderLayout and place AutoResizingTextArea to the north or south side. Similarly, you can use a JideBoxLayout and use FLEXIBLE or FIX as the constraint.

See Also:

Serialized Form

Nested Class Summary

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

JTextArea.AccessibleJTextArea

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

Container.AccessibleAWTContainer

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

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

Field Summary

static int	DEFAULT_MAX_ROWS Default maximum height of the text area in rows.
static int	DEFAULT_MIN_ROWS Default minimum height of the text area in rows.

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 java.awt.image.ImageObserver

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

Constructor Summary

AutoResizingTextArea()
Creates a textarea with the default minimum and maximum number of rows.

AutoResizingTextArea(Document doc)
Create a new AutoResizingTextArea using a Document.

AutoResizingTextArea(Document doc, String text, int minRows, int maxRows, int columns)
Constructs a new AutoResizingTextArea with the specified number of rows and columns, and the given model.

AutoResizingTextArea(int minRows)
Creates a textarea with the specified minimum number of rows.

AutoResizingTextArea(int minRows, int maxRows)
Creates a textarea with the specified minimum and maximum number of rows.

AutoResizingTextArea(int minRows, int maxRows, int columns)
Create a new AutoResizingTextArea with a height bounded by the provided minimum and maximum row counts and with its width dictated by the provided column count.

AutoResizingTextArea(String text)
Creates a textarea with the default minimum and maximum row count and the provided initial text.

AutoResizingTextArea(String text, int minRows, int maxRows, int columns)
Create a new AutoResizingTextArea with a height bounded by the provided minimum and maximum row counts and with its width dictated by the provided column count.

Method Summary

int	getMaxRows() Gets the maximum number of rows that will be displayed.
int	getMinRows() Gets the minimum number of rows that will be displayed.
Dimension	getPreferredScrollableViewportSize()
protected void	numberOfRowsUpdated(int oldRow, int newRow) Called when the number of rows is updated.
void	setDocument(Document doc)
void	setMaxRows(int maxRows) Sets the maximum number of rows that will be displayed.
void	setMinRows(int minRows) Sets the minimum number of rows that will be displayed
void	setRows(int rows) Sets the number of visible rows.

Methods inherited from class javax.swing.JTextArea

append, createDefaultModel, getAccessibleContext, getColumns, getColumnWidth, getLineCount, getLineEndOffset, getLineOfOffset, getLineStartOffset, getLineWrap, getPreferredSize, getRowHeight, getRows, getScrollableTracksViewportWidth, getScrollableUnitIncrement, getTabSize, getUIClassID, getWrapStyleWord, insert, paramString, replaceRange, setColumns, setFont, setLineWrap, 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, moveCaretPosition, paste, print, print, print, processInputMethodEvent, read, removeCaretListener, removeKeymap, removeNotify, replaceSelection, 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, 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, transferFocusBackward, 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, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_ROWS

public static final int DEFAULT_MAX_ROWS

Default maximum height of the text area in rows.

See Also:

Constant Field Values

DEFAULT_MIN_ROWS

public static final int DEFAULT_MIN_ROWS

Default minimum height of the text area in rows.

See Also:

Constant Field Values

Constructor Detail

AutoResizingTextArea

public AutoResizingTextArea()

Creates a textarea with the default minimum and maximum number of rows.

AutoResizingTextArea

public AutoResizingTextArea(int minRows)

Creates a textarea with the specified minimum number of rows.

Parameters:

minRows - The minimum number of rows that this textarea can have.

AutoResizingTextArea

public AutoResizingTextArea(int minRows,
                            int maxRows)

Creates a textarea with the specified minimum and maximum number of rows.

Parameters:

minRows - The minimum number of rows that this textarea can have.

maxRows - The maximum number of rows that this textarea can have.

AutoResizingTextArea

public AutoResizingTextArea(String text)

Creates a textarea with the default minimum and maximum row count and the provided initial text. The textarea is sized to fit the provided text.

Parameters:

text - The initial text to display.

AutoResizingTextArea

public AutoResizingTextArea(int minRows,
                            int maxRows,
                            int columns)

Create a new AutoResizingTextArea with a height bounded by the provided minimum and maximum row counts and with its width dictated by the provided column count.

Parameters:

minRows - The minimum number of rows that this textarea can have

maxRows - The maximum number of rows that this textarea can have.

columns - The number of columns that this textarea has.

AutoResizingTextArea

public AutoResizingTextArea(String text,
                            int minRows,
                            int maxRows,
                            int columns)

Create a new AutoResizingTextArea with a height bounded by the provided minimum and maximum row counts and with its width dictated by the provided column count. The textarea is sized to fit the provided text.

Parameters:

text - The initial text to display in the textarea.

minRows - The minimum number of rows that this textarea can have

maxRows - The maximum number of rows that this textarea can have.

columns - The number of columns that this textarea has.

Throws:

IllegalArgumentException - if the rows or columns arguments are negative.

AutoResizingTextArea

public AutoResizingTextArea(Document doc)

Create a new AutoResizingTextArea using a Document. The document will be set to the text area using setDocument(javax.swing.text.Document).

Parameters:

doc - the document.

AutoResizingTextArea

public AutoResizingTextArea(Document doc,
                            String text,
                            int minRows,
                            int maxRows,
                            int columns)

Constructs a new AutoResizingTextArea with the specified number of rows and columns, and the given model. All of the constructors feed through this constructor.

Parameters:

doc - the model to use, or create a default one if null

text - the text to be displayed, null if none

minRows - the minimum number of rows >= 0

maxRows - the maximum number of rows >= 0

columns - the number of columns >= 0

Throws:

IllegalArgumentException - if the rows or columns arguments are negative.

Method Detail

setRows

public void setRows(int rows)

Sets the number of visible rows. The row value will be forced to the boundaries of the range [minRows ... maxRows] if it is outside that range.

Overrides:

setRows in class JTextArea

Parameters:

rows - The number of rows to show

numberOfRowsUpdated

protected void numberOfRowsUpdated(int oldRow,
                                   int newRow)

Called when the number of rows is updated. By default, it will get the parent scroll pane and call revalidate. Subclass can override it to customize the behavior when number of rows is updated.

Parameters:

oldRow - the previous row count.

newRow - the new row count.

getMaxRows

public int getMaxRows()

Gets the maximum number of rows that will be displayed. You can set it using setMaxRows(int) or passed in using constructor such as AutoResizingTextArea(int, int).

Returns:

the maximum number of rows that will be displayed.

setMaxRows

public void setMaxRows(int maxRows)

Sets the maximum number of rows that will be displayed.

Parameters:

maxRows - The maximum number of rows.

getMinRows

public int getMinRows()

Gets the minimum number of rows that will be displayed. You can set it using setMinRows(int) or passed in using constructor such as AutoResizingTextArea(int, int).

Returns:

the minimum number of rows that will be displayed.

setMinRows

public void setMinRows(int minRows)

Sets the minimum number of rows that will be displayed

Parameters:

minRows - The minimum number of rows.

setDocument

public void setDocument(Document doc)

Overrides:

setDocument in class JTextComponent

getPreferredScrollableViewportSize

public Dimension getPreferredScrollableViewportSize()

Specified by:

getPreferredScrollableViewportSize in interface Scrollable

Overrides:

getPreferredScrollableViewportSize in class JTextArea