org.fife.ui.rtextarea
Class LineNumberList

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  org.fife.ui.rtextarea.LineNumberList

All Implemented Interfaces:

MouseListener, MouseMotionListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible, MouseInputListener

public class LineNumberList
extends JPanel
implements MouseInputListener

Renders line numbers in the gutter.

Version:

1.0

Author:

Robert Futrell

See Also:

Serialized Form

Nested Class Summary

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

JPanel.AccessibleJPanel

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

protected int	currentLineCount The number of lines in the text area.
protected RTextArea	textArea The text area whose lines we are marking with icons.

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

LineNumberList(RTextArea textArea)
Constructs a new LineNumberList using default values for line number color (gray) and highlighting the current line.

LineNumberList(RTextArea textArea, Color numberColor)
Constructs a new LineNumberList.

Method Summary

void	addNotify() Overridden to set width of this component correctly when we are first displayed (as keying off of the RTextArea gives us (0,0) when it isn't yet displayed.
protected static Rectangle	getChildViewBounds(View parent, int line, Rectangle editorRect) Returns the bounds of a child view as a rectangle, since Views tend to use Shape.
protected Gutter	getGutter() Returns the parent Gutter component.
int	getLineNumberingStartIndex() Returns the starting line's line number.
Dimension	getPreferredSize()
void	mouseClicked(MouseEvent e)
void	mouseDragged(MouseEvent e)
void	mouseEntered(MouseEvent e)
void	mouseExited(MouseEvent e)
void	mouseMoved(MouseEvent e)
void	mousePressed(MouseEvent e)
void	mouseReleased(MouseEvent e)
protected void	paintComponent(Graphics g) Paints this component.
void	removeNotify() Called when this component is removed from the view hierarchy.
void	setFont(Font font) Overridden to ensure line number cell sizes are updated with the font size change.
void	setLineNumberingStartIndex(int index) Sets the starting line's line number.
void	setTextArea(RTextArea textArea) Sets the text area being displayed.

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, 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, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, 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, 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, addInputMethodListener, 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, getInputMethodRequests, 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, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, 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

textArea

protected RTextArea textArea

The text area whose lines we are marking with icons.

currentLineCount

protected int currentLineCount

The number of lines in the text area.

Constructor Detail

LineNumberList

public LineNumberList(RTextArea textArea)

Constructs a new LineNumberList using default values for line number color (gray) and highlighting the current line.

Parameters:

textArea - The text component for which line numbers will be displayed.

LineNumberList

public LineNumberList(RTextArea textArea,
                      Color numberColor)

Constructs a new LineNumberList.

Parameters:

textArea - The text component for which line numbers will be displayed.

numberColor - The color to use for the line numbers. If this is null, gray will be used.

Method Detail

addNotify

public void addNotify()

Overridden to set width of this component correctly when we are first displayed (as keying off of the RTextArea gives us (0,0) when it isn't yet displayed.

Overrides:

addNotify in class JComponent

getLineNumberingStartIndex

public int getLineNumberingStartIndex()

Returns the starting line's line number. The default value is 1.

Returns:

The index

See Also:

setLineNumberingStartIndex(int)

getPreferredSize

public Dimension getPreferredSize()

Overrides:

getPreferredSize in class JComponent

mouseClicked

public void mouseClicked(MouseEvent e)

Specified by:

mouseClicked in interface MouseListener

mouseDragged

public void mouseDragged(MouseEvent e)

Specified by:

mouseDragged in interface MouseMotionListener

mouseEntered

public void mouseEntered(MouseEvent e)

Specified by:

mouseEntered in interface MouseListener

mouseExited

public void mouseExited(MouseEvent e)

Specified by:

mouseExited in interface MouseListener

mouseMoved

public void mouseMoved(MouseEvent e)

Specified by:

mouseMoved in interface MouseMotionListener

mousePressed

public void mousePressed(MouseEvent e)

Specified by:

mousePressed in interface MouseListener

mouseReleased

public void mouseReleased(MouseEvent e)

Specified by:

mouseReleased in interface MouseListener

paintComponent

protected void paintComponent(Graphics g)

Paints this component.

Overrides:

paintComponent in class JComponent

Parameters:

g - The graphics context.

removeNotify

public void removeNotify()

Called when this component is removed from the view hierarchy.

Overrides:

removeNotify in class JComponent

setFont

public void setFont(Font font)

Overridden to ensure line number cell sizes are updated with the font size change.

Overrides:

setFont in class JComponent

Parameters:

font - The new font to use for line numbers.

setLineNumberingStartIndex

public void setLineNumberingStartIndex(int index)

Sets the starting line's line number. The default value is 1. Applications can call this method to change this value if they are displaying a subset of lines in a file, for example.

Parameters:

index - The new index.

See Also:

getLineNumberingStartIndex()

setTextArea

public void setTextArea(RTextArea textArea)

Sets the text area being displayed.

Parameters:

textArea - The text area.

getChildViewBounds

protected static final Rectangle getChildViewBounds(View parent,
                                                    int line,
                                                    Rectangle editorRect)

Returns the bounds of a child view as a rectangle, since Views tend to use Shape.

Parameters:

parent - The parent view of the child whose bounds we're getting.

line - The index of the child view.

editorRect - Returned from the text area's getVisibleEditorRect method.

Returns:

The child view's bounds.

getGutter

protected Gutter getGutter()

Returns the parent Gutter component.

Returns:

The parent Gutter.