RTextArea

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.text.JTextComponent
      - javax.swing.JTextArea
        
        com.fr.design.gui.syntax.ui.rtextarea.RTextArea

所有已实现的接口:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.awt.print.Printable, java.io.Serializable, javax.accessibility.Accessible, javax.swing.Scrollable

直接已知子类:

RSyntaxTextArea
```
public class RTextArea
extends javax.swing.JTextArea
implements java.awt.print.Printable
```
An extension of JTextArea that adds the following features:
- Insert/Overwrite modes (can be toggled via the Insert key)
- A right-click popup menu with standard editing options
- Macro support
- "Mark all" functionality.
- A way to change the background to an image (gif/png/jpg)
- Highlight the current line (can be toggled)
- An easy way to print its text (implements Printable)
- Hard/soft (emulated with spaces) tabs
- Fixes a bug with setTabSize
- Other handy new methods
NOTE: If the background for an RTextArea is set to a color, its opaque property is set to true for performance reasons. If the background is set to an image, then the opaque property is set to false. This slows things down a little, but if it didn't happen then we would see garbage on-screen when the user scrolled through a document using the arrow keys (not the page-up/down keys though). You should never have to set the opaque property yourself; it is always done for you.
版本:

1.0

作者:

Robert Futrell

另请参阅:
序列化表格

嵌套类概要

嵌套类
限定符和类型	类和说明
`protected class`	`RTextArea.RTextAreaMutableCaretEvent` Modified from `MutableCaretEvent` in `JTextComponent` so that mouse events get fired when the user is selecting text with the mouse as well.

从类继承的嵌套类/接口 javax.swing.JTextArea
javax.swing.JTextArea.AccessibleJTextArea

从类继承的嵌套类/接口 javax.swing.text.JTextComponent
javax.swing.text.JTextComponent.AccessibleJTextComponent, javax.swing.text.JTextComponent.DropLocation, javax.swing.text.JTextComponent.KeyBinding

从类继承的嵌套类/接口 javax.swing.JComponent
javax.swing.JComponent.AccessibleJComponent

从类继承的嵌套类/接口 java.awt.Container
java.awt.Container.AccessibleAWTContainer

从类继承的嵌套类/接口 java.awt.Component
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

字段概要

字段
限定符和类型	字段和说明
`static java.lang.String`	`BACKGROUND_IMAGE_PROPERTY`
`static int`	`COPY_ACTION`
`static java.lang.String`	`CURRENT_LINE_HIGHLIGHT_COLOR_PROPERTY`
`static java.lang.String`	`CURRENT_LINE_HIGHLIGHT_FADE_PROPERTY`
`static int`	`CUT_ACTION`
`static int`	`DELETE_ACTION`
`static java.lang.String`	`HIGHLIGHT_CURRENT_LINE_PROPERTY`
`static int`	`INSERT_MODE` Constant representing insert mode.
`static java.lang.String`	`MARK_ALL_COLOR_PROPERTY` The property fired when the "mark all" color changes.
`static java.lang.String`	`MARK_ALL_OCCURRENCES_CHANGED_PROPERTY` The property fired when what ranges are labeled "mark all" changes.
`static int`	`OVERWRITE_MODE` Constant representing overwrite mode.
`static int`	`PASTE_ACTION`
`static int`	`REDO_ACTION`
`static java.lang.String`	`ROUNDED_SELECTION_PROPERTY`
`static int`	`SELECT_ALL_ACTION`
`static int`	`UNDO_ACTION`

从类继承的字段 javax.swing.text.JTextComponent
DEFAULT_KEYMAP, FOCUS_ACCELERATOR_KEY

从类继承的字段 javax.swing.JComponent
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

从类继承的字段 java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

从接口继承的字段 java.awt.print.Printable
NO_SUCH_PAGE, PAGE_EXISTS

从接口继承的字段 java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

构造器概要

构造器
构造器和说明
`RTextArea()` Constructor.
`RTextArea(javax.swing.text.AbstractDocument doc)` Constructor.
`RTextArea(javax.swing.text.AbstractDocument doc, java.lang.String text, int rows, int cols)` Constructor.
`RTextArea(int textMode)` Creates a new `RTextArea`.
`RTextArea(int rows, int cols)` Constructor.
`RTextArea(java.lang.String text)` Constructor.
`RTextArea(java.lang.String text, int rows, int cols)` Constructor.

方法概要

方法
限定符和类型	方法和说明
`java.lang.Object`	`addLineHighlight(int line, java.awt.Color color)` Adds a line highlight.
`void`	`beginAtomicEdit()` Begins an "atomic edit."
`static void`	`beginRecordingMacro()` Begins recording a macro.
`boolean`	`canRedo()` Tells whether a redo is possible
`boolean`	`canUndo()` Tells whether an undo is possible
`protected void`	`configurePopupMenu(javax.swing.JPopupMenu popupMenu)` Configures the popup menu for this text area.
`void`	`convertSpacesToTabs()` Converts all instances of a number of spaces equal to a tab size into a tab in this text area.
`void`	`convertTabsToSpaces()` Converts all instances of a tab into a number of spaces equivalent to a tab in this text area.
`protected javax.swing.text.Document`	`createDefaultModel()` Creates the default implementation of the model to be used at construction if one isn't explicitly given.
`protected com.fr.design.gui.syntax.ui.rtextarea.RTextAreaBase.RTAMouseListener`	`createMouseListener()` Returns the caret event/mouse listener for `RTextArea`s.
`protected javax.swing.JPopupMenu`	`createPopupMenu()` Creates the right-click popup menu.
`protected javax.swing.JMenuItem`	`createPopupMenuItem(javax.swing.Action a)` Creates and configures a menu item for used in the popup menu.
`protected RTextAreaUI`	`createRTextAreaUI()` Returns the a real UI to install on this text area.
`protected RUndoManager`	`createUndoManager()` Creates an undo manager for use in this text area.
`void`	`discardAllEdits()` Removes all undoable edits from this document's undo manager.
`void`	`endAtomicEdit()` Completes an "atomic" edit.
`static void`	`endRecordingMacro()` Ends recording a macro.
`protected void`	`fireCaretUpdate(javax.swing.event.CaretEvent e)` Notifies all listeners that a caret change has occurred.
`protected void`	`forceCurrentLineHighlightRepaint()` Forces the current line highlight to be repainted.
`static RecordableTextAction`	`getAction(int action)` Provides a way to gain access to the editor actions on the right-click popup menu.
`java.awt.Color`	`getBackground()` Returns the `java.awt.Color` used as the background color for this text area.
`java.awt.Image`	`getBackgroundImage()` Returns the image currently used for the background.
`java.lang.Object`	`getBackgroundObject()` Returns the `Object` representing the background for all documents in this tabbed pane; either a `java.awt.Color` or a `java.lang.Image` containing the image used as the background for this text area.
`int`	`getCaretLineNumber()` Gets the line number that the caret is on.
`int`	`getCaretOffsetFromLineStart()` Gets the position from the beginning of the current line that the caret is on.
`java.awt.Color`	`getCurrentLineHighlightColor()` Returns the color being used to highlight the current line.
`static Macro`	`getCurrentMacro()` Returns the macro currently stored in this `RTextArea`.
`static java.awt.Color`	`getDefaultCaretColor()` Returns the default caret color.
`static java.awt.Color`	`getDefaultCurrentLineHighlightColor()` Returns the "default" color for highlighting the current line.
`static java.awt.Font`	`getDefaultFont()` Returns the default font for text areas.
`static java.awt.Color`	`getDefaultForeground()` Returns the default foreground color for text in this text area.
`static java.awt.Color`	`getDefaultMarginLineColor()` Returns the default color for the margin line.
`static int`	`getDefaultMarginLinePosition()` Returns the default margin line position.
`static java.awt.Color`	`getDefaultMarkAllHighlightColor()` Returns the default color used for "mark all."
`static int`	`getDefaultTabSize()` Returns the default tab size, in spaces.
`boolean`	`getFadeCurrentLineHighlight()` Returns whether the current line highlight is faded.
`boolean`	`getHighlightCurrentLine()` Returns whether or not the current line is highlighted.
`static IconGroup`	`getIconGroup()` Returns the icon group being used for the actions of this text area.
`int`	`getLineEndOffsetOfCurrentLine()` Returns the offset of the last character of the line that the caret is on.
`int`	`getLineHeight()` Returns the height of a line of text in this text area.
`int`	`getLineStartOffsetOfCurrentLine()` Returns the offset of the first character of the line that the caret is on.
`java.awt.Color`	`getMarginLineColor()` Returns the color used to paint the margin line.
`int`	`getMarginLinePixelLocation()` Returns the margin line position (in pixels) from the left-hand side of the text area.
`int`	`getMarginLinePosition()` Returns the margin line position (which is the number of 'm' widths in the current font the margin line is over).
`java.awt.Color`	`getMarkAllHighlightColor()` Returns the color used in "mark all."
`int`	`getMaxAscent()` Returns the maximum ascent of all fonts used in this text area.
`javax.swing.JPopupMenu`	`getPopupMenu()` Returns the popup menu for this component, lazily creating it if necessary.
`boolean`	`getRoundedSelectionEdges()` Returns whether selection edges are rounded in this text area.
`static java.lang.String`	`getSelectedOccurrenceText()` Returns the text last selected and used in a Ctrl+K operation.
`boolean`	`getTabsEmulated()` Returns whether or not tabs are emulated with spaces (i.e., "soft" tabs).
`int`	`getTextMode()` Returns the text mode this editor pane is currently in.
`ToolTipSupplier`	`getToolTipSupplier()` Returns the tool tip supplier.
`java.lang.String`	`getToolTipText(java.awt.event.MouseEvent e)` Returns the tooltip to display for a mouse event at the given location.
`protected void`	`handleReplaceSelection(java.lang.String content)` Does the actual dirty-work of replacing the selected text in this text area (i.e., in its document).
`protected void`	`init()` Initializes this text area.
`boolean`	`isMarginLineEnabled()` Returns whether or not the margin line is being painted.
`static boolean`	`isOSX()` Returns whether the OS we're running on is OS X.
`static boolean`	`isRecordingMacro()` Returns whether or not a macro is being recorded.
`static void`	`loadMacro(Macro macro)` Loads a macro to be used by all `RTextArea`s in the current application.
`protected void`	`paintComponent(java.awt.Graphics g)` Paints the text area.
`void`	`paste()`
`void`	`playbackLastMacro()` "Plays back" the last recorded macro in this text area.
`protected void`	`possiblyUpdateCurrentLineHighlightLocation()` Updates the current line highlight location.
`int`	`print(java.awt.Graphics g, java.awt.print.PageFormat pageFormat, int pageIndex)` Method called when it's time to print this badboy (the old-school, AWT way).
`protected void`	`processComponentEvent(java.awt.event.ComponentEvent e)` Overridden so we can tell when the text area is resized and update the current-line highlight, if necessary (i.e., if it is enabled and if lineWrap is enabled.
`void`	`read(java.io.Reader in, java.lang.Object desc)` We override this method because the super version gives us an entirely new `Document`, thus requiring us to re-attach our Undo manager.
`void`	`redoLastAction()` Attempt to redo the last action.
`void`	`removeAllLineHighlights()` Removes all line highlights.
`void`	`removeLineHighlight(java.lang.Object tag)` Removes a line highlight.
`void`	`replaceRange(java.lang.String str, int start, int end)` Replaces text from the indicated start to end position with the new text specified.
`void`	`replaceSelection(java.lang.String text)` This method overrides `JTextComponent`'s `replaceSelection`, so that if `textMode` is `OVERWRITE_MODE`, it actually overwrites.
`static void`	`setActionProperties(int action, java.lang.String name, char mnemonic, javax.swing.KeyStroke accelerator)` Sets the properties of one of the actions this text area owns.
`static void`	`setActionProperties(int action, java.lang.String name, java.lang.Integer mnemonic, javax.swing.KeyStroke accelerator)` Sets the properties of one of the actions this text area owns.
`void`	`setBackground(java.awt.Color bg)` Sets the background color of this text editor.
`void`	`setBackgroundImage(java.awt.Image image)` Sets this image as the background image.
`void`	`setBackgroundObject(java.lang.Object newBackground)` Makes the background into this `Object`.
`void`	`setCaret(javax.swing.text.Caret caret)` Sets the caret to use in this text area.
`void`	`setCaretStyle(int mode, int style)` Sets the style of caret used when in insert or overwrite mode.
`void`	`setCurrentLineHighlightColor(java.awt.Color color)` Sets the color to use to highlight the current line.
`void`	`setDocument(javax.swing.text.Document document)` Sets the document used by this text area.
`void`	`setFadeCurrentLineHighlight(boolean fade)` Sets whether the current line highlight should have a "fade" effect.
`void`	`setFont(java.awt.Font font)` Sets the font for this text area.
`void`	`setHighlightCurrentLine(boolean highlight)` Sets whether or not the current line is highlighted.
`static void`	`setIconGroup(IconGroup group)` Sets the path in which to find images to associate with the editor's actions.
`void`	`setLineWrap(boolean wrap)` Sets whether or not word wrap is enabled.
`void`	`setMargin(java.awt.Insets insets)` Overridden to update the current line highlight location.
`void`	`setMarginLineColor(java.awt.Color color)` Sets the color used to paint the margin line.
`void`	`setMarginLineEnabled(boolean enabled)` Enables or disables the margin line.
`void`	`setMarginLinePosition(int size)` Sets the number of 'm' widths the margin line is over.
`void`	`setMarkAllHighlightColor(java.awt.Color color)` Sets the color used for "mark all."
`void`	`setPopupMenu(javax.swing.JPopupMenu popupMenu)` Sets the popup menu used by this text area.
`void`	`setRoundedSelectionEdges(boolean rounded)` Sets whether the edges of selections are rounded in this text area.
`protected void`	`setRTextAreaUI(RTextAreaUI ui)` Sets the UI for this `RTextArea`.
`static void`	`setSelectedOccurrenceText(java.lang.String text)` Sets the text last selected/Ctrl+K'd in an `RTextArea`.
`void`	`setTabsEmulated(boolean areEmulated)` Changes whether or not tabs should be emulated with spaces (i.e., soft tabs).
`void`	`setTabSize(int size)` Workaround, since in JDK1.4 it appears that `setTabSize()` doesn't work for a `JTextArea` unless you use the constructor specifying the number of rows and columns...
`void`	`setTextMode(int mode)` Sets the text mode for this editor pane.
`void`	`setToolTipSupplier(ToolTipSupplier supplier)` Sets the tool tip supplier.
`void`	`setUI(javax.swing.plaf.TextUI ui)` Sets the UI used by this text area.
`void`	`undoLastAction()` Attempt to undo an "action" done in this text area.
`protected void`	`updateMarginLineX()` This is here so subclasses such as `RSyntaxTextArea` that have multiple fonts can define exactly what it means, for example, for the margin line to be "80 characters" over.
`int`	`yForLine(int line)` Returns the y-coordinate of the specified line.
`int`	`yForLineContaining(int offs)` Returns the y-coordinate of the line containing an offset.

从类继承的方法 javax.swing.JTextArea
append, getAccessibleContext, getColumns, getColumnWidth, getLineCount, getLineEndOffset, getLineOfOffset, getLineStartOffset, getLineWrap, getPreferredScrollableViewportSize, getPreferredSize, getRowHeight, getRows, getScrollableTracksViewportWidth, getScrollableUnitIncrement, getTabSize, getUIClassID, getWrapStyleWord, insert, paramString, setColumns, setRows, setWrapStyleWord

从类继承的方法 javax.swing.text.JTextComponent
addCaretListener, addInputMethodListener, addKeymap, copy, cut, 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, getUI, isEditable, loadKeymap, modelToView, moveCaretPosition, print, print, print, processInputMethodEvent, removeCaretListener, removeKeymap, removeNotify, restoreComposedText, saveComposedText, select, selectAll, setCaretColor, setCaretPosition, setComponentOrientation, setDisabledTextColor, setDragEnabled, setDropMode, setEditable, setFocusAccelerator, setHighlighter, setKeymap, setNavigationFilter, setSelectedTextColor, setSelectionColor, setSelectionEnd, setSelectionStart, setText, updateUI, viewToModel, write

从类继承的方法 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, 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, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

从类继承的方法 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

从类继承的方法 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, 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, 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, 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

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - INSERT_MODE
```
public static final int INSERT_MODE
```
    Constant representing insert mode.
    
    另请参阅:
    setCaretStyle(int, int), 常量字段值
  - OVERWRITE_MODE
```
public static final int OVERWRITE_MODE
```
    Constant representing overwrite mode.
    
    另请参阅:
    setCaretStyle(int, int), 常量字段值
  - MARK_ALL_COLOR_PROPERTY
```
public static final java.lang.String MARK_ALL_COLOR_PROPERTY
```
    The property fired when the "mark all" color changes.
    
    另请参阅:
    常量字段值
  - MARK_ALL_OCCURRENCES_CHANGED_PROPERTY
```
public static final java.lang.String MARK_ALL_OCCURRENCES_CHANGED_PROPERTY
```
    The property fired when what ranges are labeled "mark all" changes.
    
    另请参阅:
    常量字段值
  - COPY_ACTION
```
public static final int COPY_ACTION
```
    另请参阅:
    常量字段值
  - CUT_ACTION
```
public static final int CUT_ACTION
```
    另请参阅:
    常量字段值
  - DELETE_ACTION
```
public static final int DELETE_ACTION
```
    另请参阅:
    常量字段值
  - PASTE_ACTION
```
public static final int PASTE_ACTION
```
    另请参阅:
    常量字段值
  - REDO_ACTION
```
public static final int REDO_ACTION
```
    另请参阅:
    常量字段值
  - SELECT_ALL_ACTION
```
public static final int SELECT_ALL_ACTION
```
    另请参阅:
    常量字段值
  - UNDO_ACTION
```
public static final int UNDO_ACTION
```
    另请参阅:
    常量字段值
  - BACKGROUND_IMAGE_PROPERTY
```
public static final java.lang.String BACKGROUND_IMAGE_PROPERTY
```
    另请参阅:
    常量字段值
  - CURRENT_LINE_HIGHLIGHT_COLOR_PROPERTY
```
public static final java.lang.String CURRENT_LINE_HIGHLIGHT_COLOR_PROPERTY
```
    另请参阅:
    常量字段值
  - CURRENT_LINE_HIGHLIGHT_FADE_PROPERTY
```
public static final java.lang.String CURRENT_LINE_HIGHLIGHT_FADE_PROPERTY
```
    另请参阅:
    常量字段值
  - HIGHLIGHT_CURRENT_LINE_PROPERTY
```
public static final java.lang.String HIGHLIGHT_CURRENT_LINE_PROPERTY
```
    另请参阅:
    常量字段值
  - ROUNDED_SELECTION_PROPERTY
```
public static final java.lang.String ROUNDED_SELECTION_PROPERTY
```
    另请参阅:
    常量字段值
- 构造器详细资料
  - RTextArea
```
public RTextArea()
```
    Constructor.
  - RTextArea
```
public RTextArea(javax.swing.text.AbstractDocument doc)
```
    Constructor.
    
    参数:
    doc - The document for the editor.
  - RTextArea
```
public RTextArea(java.lang.String text)
```
    Constructor.
    
    参数:
    text - The initial text to display.
  - RTextArea
```
public RTextArea(int rows,
         int cols)
```
    Constructor.
    
    参数:
    rows - The number of rows to display.
    cols - The number of columns to display.
    
    抛出:
    
    java.lang.IllegalArgumentException - If either rows or cols is negative.
  - RTextArea
```
public RTextArea(java.lang.String text,
         int rows,
         int cols)
```
    Constructor.
    
    参数:
    text - The initial text to display.
    rows - The number of rows to display.
    cols - The number of columns to display.
    
    抛出:
    
    java.lang.IllegalArgumentException - If either rows or cols is negative.
  - RTextArea
```
public RTextArea(javax.swing.text.AbstractDocument doc,
         java.lang.String text,
         int rows,
         int cols)
```
    Constructor.
    
    参数:
    doc - The document for the editor.
    text - The initial text to display.
    rows - The number of rows to display.
    cols - The number of columns to display.
    
    抛出:
    
    java.lang.IllegalArgumentException - If either rows or cols is negative.
  - RTextArea
```
public RTextArea(int textMode)
```
    Creates a new RTextArea.
    
    参数:
    textMode - Either INSERT_MODE or OVERWRITE_MODE.
- 方法详细资料
  - addLineHighlight
```
public java.lang.Object addLineHighlight(int line,
                                java.awt.Color color)
                                  throws javax.swing.text.BadLocationException
```
    Adds a line highlight.
    
    参数:
    line - The line to highlight. This is zero-based.
    color - The color to highlight the line with.
    
    抛出:
    
    javax.swing.text.BadLocationException - If line is an invalid line number.
    另请参阅:
    removeLineHighlight(Object), removeAllLineHighlights()
  - beginAtomicEdit
```
public void beginAtomicEdit()
```
    Begins an "atomic edit." All text editing operations between this call and the next call to endAtomicEdit() will be treated as a single operation by the undo manager.
    Using this method should be done with great care. You should probably wrap the call to endAtomicEdit() in a finally block:
```
 textArea.beginAtomicEdit();
 try {
    // Do editing
 } finally {
    textArea.endAtomicEdit();
 }
 
```
    另请参阅:
    endAtomicEdit()
  - beginRecordingMacro
```
public static void beginRecordingMacro()
```
    Begins recording a macro. After this method is called, all input/caret events, etc. are recorded until endMacroRecording is called. If this method is called but the text component is already recording a macro, nothing happens (but the macro keeps recording).
    
    另请参阅:
    isRecordingMacro(), endRecordingMacro()
  - canUndo
```
public boolean canUndo()
```
    Tells whether an undo is possible
    
    另请参阅:
    canRedo(), undoLastAction()
  - canRedo
```
public boolean canRedo()
```
    Tells whether a redo is possible
    
    另请参阅:
    canUndo(), redoLastAction()
  - configurePopupMenu
```
protected void configurePopupMenu(javax.swing.JPopupMenu popupMenu)
```
    Configures the popup menu for this text area. This method is called right before it is displayed, so a hosting application can do any custom configuration (configuring actions, adding/removing items, etc.).
    The default implementation does nothing.
    If you set the popup menu via setPopupMenu(JPopupMenu), you will want to override this method, especially if you removed any of the menu items in the default popup menu.
    
    参数:
    popupMenu - The popup menu. This will never be null.
    另请参阅:
    createPopupMenu(), setPopupMenu(JPopupMenu)
  - createDefaultModel
```
protected javax.swing.text.Document createDefaultModel()
```
    Creates the default implementation of the model to be used at construction if one isn't explicitly given. A new instance of RDocument is returned.
    
    覆盖:
    
    createDefaultModel 在类中 javax.swing.JTextArea
    
    返回:
    The default document.
  - createMouseListener
```
protected com.fr.design.gui.syntax.ui.rtextarea.RTextAreaBase.RTAMouseListener createMouseListener()
```
    Returns the caret event/mouse listener for RTextAreas.
    
    返回:
    The caret event/mouse listener.
  - createPopupMenu
```
protected javax.swing.JPopupMenu createPopupMenu()
```
    Creates the right-click popup menu. Subclasses can override this method to replace or augment the popup menu returned.
    
    返回:
    The popup menu.
    另请参阅:
    setPopupMenu(JPopupMenu), configurePopupMenu(JPopupMenu), createPopupMenuItem(Action)
  - createPopupMenuItem
```
protected javax.swing.JMenuItem createPopupMenuItem(javax.swing.Action a)
```
    Creates and configures a menu item for used in the popup menu.
    
    参数:
    a - The action for the menu item.
    
    返回:
    The menu item.
    另请参阅:
    createPopupMenu()
  - createRTextAreaUI
```
protected RTextAreaUI createRTextAreaUI()
```
    Returns the a real UI to install on this text area.
    
    返回:
    The UI.
  - createUndoManager
```
protected RUndoManager createUndoManager()
```
    Creates an undo manager for use in this text area.
    
    返回:
    The undo manager.
  - discardAllEdits
```
public void discardAllEdits()
```
    Removes all undoable edits from this document's undo manager. This method also makes the undo/redo actions disabled.
  - endAtomicEdit
```
public void endAtomicEdit()
```
    Completes an "atomic" edit.
    
    另请参阅:
    beginAtomicEdit()
  - endRecordingMacro
```
public static void endRecordingMacro()
```
    Ends recording a macro. If this method is called but the text component is not recording a macro, nothing happens.
    
    另请参阅:
    isRecordingMacro(), beginRecordingMacro()
  - fireCaretUpdate
```
protected void fireCaretUpdate(javax.swing.event.CaretEvent e)
```
    Notifies all listeners that a caret change has occurred.
    
    覆盖:
    
    fireCaretUpdate 在类中 javax.swing.text.JTextComponent
    
    参数:
    e - The caret event.
  - getAction
```
public static RecordableTextAction getAction(int action)
```
    Provides a way to gain access to the editor actions on the right-click popup menu. This way you can make toolbar/menu bar items use the actual actions used by all RTextAreas, so that icons stay synchronized and you don't have to worry about enabling/disabling them yourself.
    Keep in mind that these actions are shared across all instances of RTextArea, so a change to any action returned by this method is global across all RTextArea editors in your application.
    
    参数:
    action - The action to retrieve, such as CUT_ACTION. If the action name is invalid, null is returned.
    
    返回:
    The action, or null if an invalid action is requested.
  - getCurrentMacro
```
public static Macro getCurrentMacro()
```
    Returns the macro currently stored in this RTextArea. Since macros are shared, all RTextAreas in the currently- running application are using this macro.
    
    返回:
    The current macro, or null if no macro has been recorded/loaded.
    另请参阅:
    loadMacro(Macro)
  - getDefaultMarkAllHighlightColor
```
public static final java.awt.Color getDefaultMarkAllHighlightColor()
```
    Returns the default color used for "mark all."
    
    返回:
    The color.
    另请参阅:
    getMarkAllHighlightColor(), setMarkAllHighlightColor(Color)
  - getIconGroup
```
public static IconGroup getIconGroup()
```
    Returns the icon group being used for the actions of this text area.
    
    返回:
    The icon group.
    另请参阅:
    setIconGroup(IconGroup)
  - getMarkAllHighlightColor
```
public java.awt.Color getMarkAllHighlightColor()
```
    Returns the color used in "mark all."
    
    返回:
    The color.
    另请参阅:
    setMarkAllHighlightColor(Color)
  - getMaxAscent
```
public int getMaxAscent()
```
    Returns the maximum ascent of all fonts used in this text area. In the case of a standard RTextArea, this is simply the ascent of the current font.
    This value could be useful, for example, to implement a line-numbering scheme.
    
    返回:
    The ascent of the current font.
  - getPopupMenu
```
public javax.swing.JPopupMenu getPopupMenu()
```
    Returns the popup menu for this component, lazily creating it if necessary.
    
    返回:
    The popup menu.
    另请参阅:
    createPopupMenu(), setPopupMenu(JPopupMenu)
  - getSelectedOccurrenceText
```
public static java.lang.String getSelectedOccurrenceText()
```
    Returns the text last selected and used in a Ctrl+K operation.
    
    返回:
    The text, or null if none.
    另请参阅:
    setSelectedOccurrenceText(String)
  - getTextMode
```
public final int getTextMode()
```
    Returns the text mode this editor pane is currently in.
    
    返回:
    Either INSERT_MODE or OVERWRITE_MODE.
    另请参阅:
    setTextMode(int)
  - getToolTipSupplier
```
public ToolTipSupplier getToolTipSupplier()
```
    Returns the tool tip supplier.
    
    返回:
    The tool tip supplier, or null if one isn't installed.
    另请参阅:
    setToolTipSupplier(ToolTipSupplier)
  - getToolTipText
```
public java.lang.String getToolTipText(java.awt.event.MouseEvent e)
```
    Returns the tooltip to display for a mouse event at the given location. This method is overridden to check for a ToolTipSupplier; if there is one installed, it is queried for tool tip text before using the super class's implementation of this method.
    
    覆盖:
    
    getToolTipText 在类中 javax.swing.text.JTextComponent
    
    参数:
    e - The mouse event.
    
    返回:
    The tool tip text, or null if none.
    另请参阅:
    getToolTipSupplier(), setToolTipSupplier(ToolTipSupplier)
  - handleReplaceSelection
```
protected void handleReplaceSelection(java.lang.String content)
```
    Does the actual dirty-work of replacing the selected text in this text area (i.e., in its document). This method provides a hook for subclasses to handle this in a different way.
    
    参数:
    content - The content to add.
  - init
```
protected void init()
```
    Initializes this text area.
  - isRecordingMacro
```
public static boolean isRecordingMacro()
```
    Returns whether or not a macro is being recorded.
    
    返回:
    Whether or not a macro is being recorded.
    另请参阅:
    beginRecordingMacro(), endRecordingMacro()
  - loadMacro
```
public static void loadMacro(Macro macro)
```
    Loads a macro to be used by all RTextAreas in the current application.
    
    参数:
    macro - The macro to load.
    另请参阅:
    getCurrentMacro()
  - paste
```
public void paste()
```
    覆盖:
    
    paste 在类中 javax.swing.text.JTextComponent
  - playbackLastMacro
```
public void playbackLastMacro()
```
    "Plays back" the last recorded macro in this text area.
  - print
```
public int print(java.awt.Graphics g,
        java.awt.print.PageFormat pageFormat,
        int pageIndex)
```
    Method called when it's time to print this badboy (the old-school, AWT way).
    
    指定者:
    
    print 在接口中 java.awt.print.Printable
    
    参数:
    g - The context into which the page is drawn.
    pageFormat - The size and orientation of the page being drawn.
    pageIndex - The zero based index of the page to be drawn.
  - read
```
public void read(java.io.Reader in,
        java.lang.Object desc)
          throws java.io.IOException
```
    We override this method because the super version gives us an entirely new Document, thus requiring us to re-attach our Undo manager. With this version we just replace the text.
    
    覆盖:
    
    read 在类中 javax.swing.text.JTextComponent
    
    抛出:
    
    java.io.IOException
  - redoLastAction
```
public void redoLastAction()
```
    Attempt to redo the last action.
    
    另请参阅:
    undoLastAction()
  - removeAllLineHighlights
```
public void removeAllLineHighlights()
```
    Removes all line highlights.
    
    另请参阅:
    removeLineHighlight(Object)
  - removeLineHighlight
```
public void removeLineHighlight(java.lang.Object tag)
```
    Removes a line highlight.
    
    参数:
    tag - The tag of the line highlight to remove.
    另请参阅:
    removeAllLineHighlights(), addLineHighlight(int, Color)
  - replaceRange
```
public void replaceRange(java.lang.String str,
                int start,
                int end)
```
    Replaces text from the indicated start to end position with the new text specified. Does nothing if the model is null. Simply does a delete if the new string is null or empty.
    This method is thread safe, although most Swing methods are not.
    This method is overridden so that our Undo manager remembers it as a single operation (it has trouble with this, especially for RSyntaxTextArea and the "auto-indent" feature).
    
    覆盖:
    
    replaceRange 在类中 javax.swing.JTextArea
    
    参数:
    str - the text to use as the replacement
    start - the start position >= 0
    end - the end position >= start
    
    抛出:
    
    java.lang.IllegalArgumentException - if part of the range is an invalid position in the model
    另请参阅:
    JTextArea.insert(String, int), replaceRange(String, int, int)
  - replaceSelection
```
public void replaceSelection(java.lang.String text)
```
    This method overrides JTextComponent's replaceSelection, so that if textMode is OVERWRITE_MODE, it actually overwrites.
    
    覆盖:
    
    replaceSelection 在类中 javax.swing.text.JTextComponent
    
    参数:
    text - The content to replace the selection with.
  - setActionProperties
```
public static void setActionProperties(int action,
                       java.lang.String name,
                       char mnemonic,
                       javax.swing.KeyStroke accelerator)
```
    Sets the properties of one of the actions this text area owns.
    
    参数:
    action - The action to modify; for example, CUT_ACTION.
    name - The new name for the action.
    mnemonic - The new mnemonic for the action.
    accelerator - The new accelerator key for the action.
  - setActionProperties
```
public static void setActionProperties(int action,
                       java.lang.String name,
                       java.lang.Integer mnemonic,
                       javax.swing.KeyStroke accelerator)
```
    Sets the properties of one of the actions this text area owns.
    
    参数:
    action - The action to modify; for example, CUT_ACTION.
    name - The new name for the action.
    mnemonic - The new mnemonic for the action.
    accelerator - The new accelerator key for the action.
  - setCaret
```
public void setCaret(javax.swing.text.Caret caret)
```
    Sets the caret to use in this text area. It is strongly encouraged to use ConfigurableCarets (which is used by default), or a subclass, since they know how to render themselves differently when the user toggles between insert and overwrite modes.
    
    覆盖:
    
    setCaret 在类中 javax.swing.text.JTextComponent
    
    参数:
    caret - The caret to use. If this is not an instance of ConfigurableCaret, an exception is thrown.
    
    抛出:
    
    java.lang.IllegalArgumentException - If the specified caret is not an ConfigurableCaret.
    另请参阅:
    setCaretStyle(int, int)
  - setCaretStyle
```
public void setCaretStyle(int mode,
                 int style)
```
    Sets the style of caret used when in insert or overwrite mode.
    
    参数:
    mode - Either INSERT_MODE or OVERWRITE_MODE.
    style - The style for the caret (such as ConfigurableCaret.VERTICAL_LINE_STYLE).
    另请参阅:
    ConfigurableCaret
  - setDocument
```
public void setDocument(javax.swing.text.Document document)
```
    Sets the document used by this text area.
    
    覆盖:
    
    setDocument 在类中 javax.swing.text.JTextComponent
    
    参数:
    document - The new document to use.
    
    抛出:
    
    java.lang.IllegalArgumentException - If the document is not an instance of RDocument.
  - setIconGroup
```
public static void setIconGroup(IconGroup group)
```
    Sets the path in which to find images to associate with the editor's actions. The path MUST contain the following images (with the appropriate extension as defined by the icon group):
    - cut
    - copy
    - paste
    - delete
    - undo
    - redo
    - selectall
    If any of the above images don't exist, the corresponding action will not have an icon.
    参数:
    group - The icon group to load.
    另请参阅:
    getIconGroup()
  - setMarkAllHighlightColor
```
public void setMarkAllHighlightColor(java.awt.Color color)
```
    Sets the color used for "mark all." This fires a property change of type MARK_ALL_COLOR_PROPERTY.
    
    参数:
    color - The color to use for "mark all."
    另请参阅:
    getMarkAllHighlightColor()
  - setPopupMenu
```
public void setPopupMenu(javax.swing.JPopupMenu popupMenu)
```
    Sets the popup menu used by this text area.
    If you set the popup menu with this method, you'll want to consider also overriding configurePopupMenu(JPopupMenu), especially if you removed any of the default menu items.
    
    参数:
    popupMenu - The popup menu. If this is null, no popup menu will be displayed.
    另请参阅:
    getPopupMenu(), configurePopupMenu(JPopupMenu)
  - setRoundedSelectionEdges
```
public void setRoundedSelectionEdges(boolean rounded)
```
    Sets whether the edges of selections are rounded in this text area. This method fires a property change of type ROUNDED_SELECTION_PROPERTY.
    
    参数:
    rounded - Whether selection edges should be rounded.
    另请参阅:
    getRoundedSelectionEdges()
  - setSelectedOccurrenceText
```
public static void setSelectedOccurrenceText(java.lang.String text)
```
    Sets the text last selected/Ctrl+K'd in an RTextArea. This text will be searched for in subsequent Ctrl+K/Ctrl+Shift+K actions (Cmd+K on OS X).
    Since the selected occurrence actions are built into RTextArea, applications usually do not have to call this method directly, but can choose to do so if they wish (for example, if they wish to set this value when the user does a search via a Find dialog).
    
    参数:
    text - The selected text.
    另请参阅:
    getSelectedOccurrenceText()
  - setTextMode
```
public void setTextMode(int mode)
```
    Sets the text mode for this editor pane. If the currently installed caret is an instance of ConfigurableCaret, it will be automatically updated to render itself appropriately for the new text mode.
    
    参数:
    mode - Either INSERT_MODE or OVERWRITE_MODE.
    另请参阅:
    getTextMode()
  - setToolTipSupplier
```
public void setToolTipSupplier(ToolTipSupplier supplier)
```
    Sets the tool tip supplier.
    
    参数:
    supplier - The new tool tip supplier, or null if there is to be no supplier.
    另请参阅:
    getToolTipSupplier()
  - setUI
```
public final void setUI(javax.swing.plaf.TextUI ui)
```
    Sets the UI used by this text area. This is overridden so only the right-click popup menu's UI is updated. The look and feel of an RTextArea is independent of the Java Look and Feel, and so this method does not change the text area itself. Subclasses (such as RSyntaxTextArea can call setRTextAreaUI if they wish to install a new UI.
    
    覆盖:
    
    setUI 在类中 javax.swing.text.JTextComponent
    
    参数:
    ui - This parameter is ignored.
  - undoLastAction
```
public void undoLastAction()
```
    Attempt to undo an "action" done in this text area.
    
    另请参阅:
    redoLastAction()
  - convertSpacesToTabs
```
public void convertSpacesToTabs()
```
    Converts all instances of a number of spaces equal to a tab size into a tab in this text area.
    
    另请参阅:
    convertTabsToSpaces(), getTabsEmulated(), setTabsEmulated(boolean)
  - convertTabsToSpaces
```
public void convertTabsToSpaces()
```
    Converts all instances of a tab into a number of spaces equivalent to a tab in this text area.
    
    另请参阅:
    convertSpacesToTabs(), getTabsEmulated(), setTabsEmulated(boolean)
  - forceCurrentLineHighlightRepaint
```
protected void forceCurrentLineHighlightRepaint()
```
    Forces the current line highlight to be repainted. This hack is necessary for those situations when the view (appearance) changes but the caret's location hasn't (and thus the current line highlight coordinates won't get changed). Examples of this are when word wrap is toggled and when syntax styles are changed in an RSyntaxTextArea.
  - getBackground
```
public final java.awt.Color getBackground()
```
    Returns the java.awt.Color used as the background color for this text area. If a java.awt.Image image is currently being used instead, null is returned.
    
    覆盖:
    
    getBackground 在类中 java.awt.Component
    
    返回:
    The current background color, or null if an image is currently the background.
  - getBackgroundImage
```
public final java.awt.Image getBackgroundImage()
```
    Returns the image currently used for the background. If the current background is currently a java.awt.Color and not a java.awt.Image, then null is returned.
    
    返回:
    A java.awt.Image used for the background, or null if the background is not an image.
    另请参阅:
    setBackgroundImage(java.awt.Image)
  - getBackgroundObject
```
public final java.lang.Object getBackgroundObject()
```
    Returns the Object representing the background for all documents in this tabbed pane; either a java.awt.Color or a java.lang.Image containing the image used as the background for this text area.
    
    返回:
    The Object used for the background.
    另请参阅:
    setBackgroundObject(Object newBackground)
  - getCaretLineNumber
```
public final int getCaretLineNumber()
```
    Gets the line number that the caret is on.
    
    返回:
    The zero-based line number that the caret is on.
  - getCaretOffsetFromLineStart
```
public final int getCaretOffsetFromLineStart()
```
    Gets the position from the beginning of the current line that the caret is on.
    
    返回:
    The zero-based position from the beginning of the current line that the caret is on.
  - getCurrentLineHighlightColor
```
public java.awt.Color getCurrentLineHighlightColor()
```
    Returns the color being used to highlight the current line. Note that if highlighting the current line is turned off, you will not be seeing this highlight.
    
    返回:
    The color being used to highlight the current line.
    另请参阅:
    getHighlightCurrentLine(), setHighlightCurrentLine(boolean), setCurrentLineHighlightColor(java.awt.Color)
  - getDefaultCaretColor
```
public static final java.awt.Color getDefaultCaretColor()
```
    Returns the default caret color.
    
    返回:
    The default caret color.
  - getDefaultCurrentLineHighlightColor
```
public static final java.awt.Color getDefaultCurrentLineHighlightColor()
```
    Returns the "default" color for highlighting the current line. Note that this color was chosen only because it looks nice (to me) against a white background.
    
    返回:
    The default color for highlighting the current line.
  - getDefaultFont
```
public static final java.awt.Font getDefaultFont()
```
    Returns the default font for text areas.
    
    返回:
    The default font.
  - getDefaultForeground
```
public static final java.awt.Color getDefaultForeground()
```
    Returns the default foreground color for text in this text area.
    
    返回:
    The default foreground color.
  - getDefaultMarginLineColor
```
public static final java.awt.Color getDefaultMarginLineColor()
```
    Returns the default color for the margin line.
    
    返回:
    The default margin line color.
    另请参阅:
    getMarginLineColor(), setMarginLineColor(Color)
  - getDefaultMarginLinePosition
```
public static final int getDefaultMarginLinePosition()
```
    Returns the default margin line position.
    
    返回:
    The default margin line position.
    另请参阅:
    getMarginLinePosition(), setMarginLinePosition(int)
  - getDefaultTabSize
```
public static final int getDefaultTabSize()
```
    Returns the default tab size, in spaces.
    
    返回:
    The default tab size.
  - getFadeCurrentLineHighlight
```
public boolean getFadeCurrentLineHighlight()
```
    Returns whether the current line highlight is faded.
    
    返回:
    Whether the current line highlight is faded.
    另请参阅:
    setFadeCurrentLineHighlight(boolean)
  - getHighlightCurrentLine
```
public boolean getHighlightCurrentLine()
```
    Returns whether or not the current line is highlighted.
    
    返回:
    Whether or the current line is highlighted.
    另请参阅:
    setHighlightCurrentLine(boolean), getCurrentLineHighlightColor(), setCurrentLineHighlightColor(java.awt.Color)
  - getLineEndOffsetOfCurrentLine
```
public final int getLineEndOffsetOfCurrentLine()
```
    Returns the offset of the last character of the line that the caret is on.
    
    返回:
    The last offset of the line that the caret is currently on.
  - getLineHeight
```
public int getLineHeight()
```
    Returns the height of a line of text in this text area.
    
    返回:
    The height of a line of text.
  - getLineStartOffsetOfCurrentLine
```
public final int getLineStartOffsetOfCurrentLine()
```
    Returns the offset of the first character of the line that the caret is on.
    
    返回:
    The first offset of the line that the caret is currently on.
  - getMarginLineColor
```
public java.awt.Color getMarginLineColor()
```
    Returns the color used to paint the margin line.
    
    返回:
    The margin line color.
    另请参阅:
    setMarginLineColor(Color)
  - getMarginLinePixelLocation
```
public int getMarginLinePixelLocation()
```
    Returns the margin line position (in pixels) from the left-hand side of the text area.
    
    返回:
    The margin line position.
    另请参阅:
    getDefaultMarginLinePosition(), setMarginLinePosition(int)
  - getMarginLinePosition
```
public int getMarginLinePosition()
```
    Returns the margin line position (which is the number of 'm' widths in the current font the margin line is over).
    
    返回:
    The margin line position.
    另请参阅:
    getDefaultMarginLinePosition(), setMarginLinePosition(int)
  - getRoundedSelectionEdges
```
public boolean getRoundedSelectionEdges()
```
    Returns whether selection edges are rounded in this text area.
    
    返回:
    Whether selection edges are rounded.
    另请参阅:
    setRoundedSelectionEdges(boolean)
  - getTabsEmulated
```
public boolean getTabsEmulated()
```
    Returns whether or not tabs are emulated with spaces (i.e., "soft" tabs).
    
    返回:
    true if tabs are emulated with spaces; false if they aren't.
    另请参阅:
    setTabsEmulated(boolean)
  - isMarginLineEnabled
```
public boolean isMarginLineEnabled()
```
    Returns whether or not the margin line is being painted.
    
    返回:
    Whether or not the margin line is being painted.
    另请参阅:
    setMarginLineEnabled(boolean)
  - isOSX
```
public static boolean isOSX()
```
    Returns whether the OS we're running on is OS X.
    
    返回:
    Whether the OS we're running on is OS X.
  - paintComponent
```
protected void paintComponent(java.awt.Graphics g)
```
    Paints the text area.
    
    覆盖:
    
    paintComponent 在类中 javax.swing.JComponent
    
    参数:
    g - The graphics context with which to paint.
  - possiblyUpdateCurrentLineHighlightLocation
```
protected void possiblyUpdateCurrentLineHighlightLocation()
```
    Updates the current line highlight location.
  - processComponentEvent
```
protected void processComponentEvent(java.awt.event.ComponentEvent e)
```
    Overridden so we can tell when the text area is resized and update the current-line highlight, if necessary (i.e., if it is enabled and if lineWrap is enabled.
    
    覆盖:
    
    processComponentEvent 在类中 java.awt.Component
    
    参数:
    e - The component event about to be sent to all registered ComponentListeners.
  - setBackground
```
public void setBackground(java.awt.Color bg)
```
    Sets the background color of this text editor. Note that this is equivalent to calling setBackgroundObject(bg). NOTE: the opaque property is set to true when the background is set to a color (by this method). When an image is used for the background, opaque is set to false. This is because we perform better when setOpaque is true, but if we use an image for the background when opaque is true, we get on-screen garbage when the user scrolls via the arrow keys. Thus we need setOpaque to be false in that case.
    You never have to change the opaque property yourself; it is always done for you.
    
    覆盖:
    
    setBackground 在类中 javax.swing.JComponent
    
    参数:
    bg - The color to use as the background color.
  - setBackgroundImage
```
public void setBackgroundImage(java.awt.Image image)
```
    Sets this image as the background image. This method fires a property change event of type BACKGROUND_IMAGE_PROPERTY.
    NOTE: the opaque property is set to true when the background is set to a color. When an image is used for the background (by this method), opaque is set to false. This is because we perform better when setOpaque is true, but if we use an image for the background when opaque is true, we get on-screen garbage when the user scrolls via the arrow keys. Thus we need setOpaque to be false in that case.
    You never have to change the opaque property yourself; it is always done for you.
    
    参数:
    image - The image to use as this text area's background.
    另请参阅:
    getBackgroundImage()
  - setBackgroundObject
```
public void setBackgroundObject(java.lang.Object newBackground)
```
    Makes the background into this Object.
    
    参数:
    newBackground - The java.awt.Color or java.awt.Image object. If newBackground is not either of these, the background is set to plain white.
  - setCurrentLineHighlightColor
```
public void setCurrentLineHighlightColor(java.awt.Color color)
```
    Sets the color to use to highlight the current line. Note that if highlighting the current line is turned off, you will not be able to see this highlight. This method fires a property change of type CURRENT_LINE_HIGHLIGHT_COLOR_PROPERTY.
    
    参数:
    color - The color to use to highlight the current line.
    
    抛出:
    
    java.lang.NullPointerException - if color is null.
    另请参阅:
    getHighlightCurrentLine(), setHighlightCurrentLine(boolean), getCurrentLineHighlightColor()
  - setFadeCurrentLineHighlight
```
public void setFadeCurrentLineHighlight(boolean fade)
```
    Sets whether the current line highlight should have a "fade" effect. This method fires a property change event of type CURRENT_LINE_HIGHLIGHT_FADE_PROPERTY.
    
    参数:
    fade - Whether the fade effect should be enabled.
    另请参阅:
    getFadeCurrentLineHighlight()
  - setFont
```
public void setFont(java.awt.Font font)
```
    Sets the font for this text area. This is overridden only so that we can update the size of the "current line highlight" and the location of the "margin line," if necessary.
    
    覆盖:
    
    setFont 在类中 javax.swing.JTextArea
    
    参数:
    font - The font to use for this text component.
  - setHighlightCurrentLine
```
public void setHighlightCurrentLine(boolean highlight)
```
    Sets whether or not the current line is highlighted. This method fires a property change of type HIGHLIGHT_CURRENT_LINE_PROPERTY.
    
    参数:
    highlight - Whether or not to highlight the current line.
    另请参阅:
    getHighlightCurrentLine(), getCurrentLineHighlightColor(), setCurrentLineHighlightColor(java.awt.Color)
  - setLineWrap
```
public void setLineWrap(boolean wrap)
```
    Sets whether or not word wrap is enabled. This is overridden so that the "current line highlight" gets updated if it needs to be.
    
    覆盖:
    
    setLineWrap 在类中 javax.swing.JTextArea
    
    参数:
    wrap - Whether or not word wrap should be enabled.
  - setMargin
```
public void setMargin(java.awt.Insets insets)
```
    Overridden to update the current line highlight location.
    
    覆盖:
    
    setMargin 在类中 javax.swing.text.JTextComponent
    
    参数:
    insets - The new insets.
  - setMarginLineColor
```
public void setMarginLineColor(java.awt.Color color)
```
    Sets the color used to paint the margin line.
    
    参数:
    color - The new margin line color.
    另请参阅:
    getDefaultMarginLineColor(), getMarginLineColor()
  - setMarginLineEnabled
```
public void setMarginLineEnabled(boolean enabled)
```
    Enables or disables the margin line.
    
    参数:
    enabled - Whether or not the margin line should be enabled.
    另请参阅:
    isMarginLineEnabled()
  - setMarginLinePosition
```
public void setMarginLinePosition(int size)
```
    Sets the number of 'm' widths the margin line is over.
    
    参数:
    size - The margin size. #see #getDefaultMarginLinePosition
    另请参阅:
    getMarginLinePosition()
  - setRTextAreaUI
```
protected void setRTextAreaUI(RTextAreaUI ui)
```
    Sets the UI for this RTextArea. Note that, for instances of RTextArea, setUI only updates the popup menu; this is because RTextAreas' look and feels are independent of the Java Look and Feel. This method is here so subclasses can set a UI (subclass of RTextAreaUI) if they have to.
    
    参数:
    ui - The new UI.
    另请参阅:
    JTextComponent.setUI(javax.swing.plaf.TextUI)
  - setTabsEmulated
```
public void setTabsEmulated(boolean areEmulated)
```
    Changes whether or not tabs should be emulated with spaces (i.e., soft tabs). Note that this affects all tabs inserted AFTER this call, not tabs already in the document. For that, see convertTabsToSpaces() and convertSpacesToTabs().
    
    参数:
    areEmulated - Whether or not tabs should be emulated with spaces.
    另请参阅:
    convertSpacesToTabs(), convertTabsToSpaces(), getTabsEmulated()
  - setTabSize
```
public void setTabSize(int size)
```
    Workaround, since in JDK1.4 it appears that setTabSize() doesn't work for a JTextArea unless you use the constructor specifying the number of rows and columns...
    Sets the number of characters to expand tabs to. This will be multiplied by the maximum advance for variable width fonts. A PropertyChange event ("tabSize") is fired when the tab size changes.
    
    覆盖:
    
    setTabSize 在类中 javax.swing.JTextArea
    
    参数:
    size - Number of characters to expand to.
  - updateMarginLineX
```
protected void updateMarginLineX()
```
    This is here so subclasses such as RSyntaxTextArea that have multiple fonts can define exactly what it means, for example, for the margin line to be "80 characters" over.
  - yForLine
```
public int yForLine(int line)
             throws javax.swing.text.BadLocationException
```
    Returns the y-coordinate of the specified line.
    
    参数:
    line - The line number.
    
    返回:
    The y-coordinate of the top of the line, or -1 if this text area doesn't yet have a positive size or the line is hidden (i.e. from folding).
    
    抛出:
    
    javax.swing.text.BadLocationException - If line isn't a valid line number for this document.
  - yForLineContaining
```
public int yForLineContaining(int offs)
                       throws javax.swing.text.BadLocationException
```
    Returns the y-coordinate of the line containing an offset.
    
    参数:
    offs - The offset info the document.
    
    返回:
    The y-coordinate of the top of the offset, or -1 if this text area doesn't yet have a positive size or the line is hidden (i.e. from folding).
    
    抛出:
    
    javax.swing.text.BadLocationException - If offs isn't a valid offset into the document.

类 RTextArea

嵌套类概要

从类继承的嵌套类/接口 javax.swing.JTextArea

从类继承的嵌套类/接口 javax.swing.text.JTextComponent

从类继承的嵌套类/接口 javax.swing.JComponent

从类继承的嵌套类/接口 java.awt.Container

从类继承的嵌套类/接口 java.awt.Component

字段概要

从类继承的字段 javax.swing.text.JTextComponent

从类继承的字段 javax.swing.JComponent

从类继承的字段 java.awt.Component

从接口继承的字段 java.awt.print.Printable

从接口继承的字段 java.awt.image.ImageObserver

构造器概要

方法概要

从类继承的方法 javax.swing.JTextArea

从类继承的方法 javax.swing.text.JTextComponent

从类继承的方法 javax.swing.JComponent

从类继承的方法 java.awt.Container

从类继承的方法 java.awt.Component

从类继承的方法 java.lang.Object

字段详细资料

INSERT_MODE

OVERWRITE_MODE

MARK_ALL_COLOR_PROPERTY

MARK_ALL_OCCURRENCES_CHANGED_PROPERTY

COPY_ACTION

CUT_ACTION

DELETE_ACTION

PASTE_ACTION

REDO_ACTION

SELECT_ALL_ACTION

UNDO_ACTION

BACKGROUND_IMAGE_PROPERTY

CURRENT_LINE_HIGHLIGHT_COLOR_PROPERTY

CURRENT_LINE_HIGHLIGHT_FADE_PROPERTY

HIGHLIGHT_CURRENT_LINE_PROPERTY

ROUNDED_SELECTION_PROPERTY

构造器详细资料

RTextArea

RTextArea

RTextArea

RTextArea

RTextArea

RTextArea

RTextArea

方法详细资料

addLineHighlight

beginAtomicEdit

beginRecordingMacro

canUndo

canRedo

configurePopupMenu

createDefaultModel

createMouseListener

createPopupMenu

createPopupMenuItem

createRTextAreaUI

createUndoManager

discardAllEdits

endAtomicEdit

endRecordingMacro

fireCaretUpdate

getAction

getCurrentMacro

getDefaultMarkAllHighlightColor

getIconGroup

getMarkAllHighlightColor

getMaxAscent

getPopupMenu

getSelectedOccurrenceText

getTextMode

getToolTipSupplier

getToolTipText

handleReplaceSelection

init

isRecordingMacro

loadMacro

paste

playbackLastMacro