org.languagetool.gui

Class Main.TextLineNumber

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

org.languagetool.gui.Main.TextLineNumber

All Implemented Interfaces:

ComponentListener, ImageObserver, MenuContainer, PropertyChangeListener, Serializable, EventListener, Accessible, CaretListener, DocumentListener

Enclosing class:

Main

public class Main.TextLineNumber
extends JPanel
implements CaretListener, DocumentListener, ComponentListener, PropertyChangeListener

This class will display line numbers for a related text component. The text component must use the same line height for each line. TextLineNumber supports wrapped lines and will highlight the line number of the current line in the text component. This class was designed to be used as a component added to the row header of a JScrollPane. Credits: The implementation of this class is based on "Text Component Line Number" Posted by Rob Camick on May 23, 2009 at https://tips4java.wordpress.com/2009/05/23/text-component-line-number/ Usage / License according to https://tips4java.wordpress.com/about/ : You are free to use and/or modify and/or distribute any or all code posted on the Java Tips Weblog without restriction. A credit in the code comments would be nice, but not in any way mandatory.

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

Fields

Modifier and Type	Field and Description
static float	CENTER
static float	LEFT
static float	RIGHT

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 and Description
TextLineNumber(JTextComponent component, int minimumDisplayDigits) Create a line number component for a text component.

Method Summary

Modifier and Type	Method and Description
void	caretUpdate(CaretEvent e)
void	changedUpdate(DocumentEvent e)
void	componentHidden(ComponentEvent e)
void	componentMoved(ComponentEvent e)
void	componentResized(ComponentEvent e)
void	componentShown(ComponentEvent e)
int	getBorderGap() Gets the border gap
Color	getCurrentLineForeground() Gets the current line rendering Color
float	getDigitAlignment() Gets the digit alignment
int	getMinimumDisplayDigits() Gets the minimum display digits
protected String	getTextLineNumber(int rowStartOffset)
void	insertUpdate(DocumentEvent e)
void	paintComponent(Graphics g) Draw the line numbers
void	propertyChange(PropertyChangeEvent evt)
void	removeUpdate(DocumentEvent e)
void	setBorderGap(int borderGap) The border gap is used in calculating the left and right insets of the border.
void	setCurrentLineForeground(Color currentLineForeground) The Color used to render the current line digits.
void	setDigitAlignment(float digitAlignment) Specify the horizontal alignment of the digits within the component.
void	setMinimumDisplayDigits(int minimumDisplayDigits) Specify the minimum number of digits used to calculate the preferred width of the component.

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

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, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, 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, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, 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, 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, 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, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

LEFT

public static final float LEFT

See Also:

Constant Field Values

CENTER

public static final float CENTER

See Also:

Constant Field Values

RIGHT

public static final float RIGHT

See Also:

Constant Field Values

Constructor Detail

TextLineNumber

public TextLineNumber(JTextComponent component,
                      int minimumDisplayDigits)

Create a line number component for a text component.

Parameters:

component - the related text component

minimumDisplayDigits - the number of digits used to calculate the minimum width of the component

Method Detail

getBorderGap

public int getBorderGap()

Gets the border gap

Returns:

the border gap in pixels

setBorderGap

public void setBorderGap(int borderGap)

The border gap is used in calculating the left and right insets of the border. Default value is 5.

Parameters:

borderGap - the gap in pixels

getCurrentLineForeground

public Color getCurrentLineForeground()

Gets the current line rendering Color

Returns:

the Color used to render the current line number

setCurrentLineForeground

public void setCurrentLineForeground(Color currentLineForeground)

The Color used to render the current line digits. Default is Coolor.RED.

Parameters:

currentLineForeground - the Color used to render the current line

getDigitAlignment

public float getDigitAlignment()

Gets the digit alignment

Returns:

the alignment of the painted digits

setDigitAlignment

public void setDigitAlignment(float digitAlignment)

Specify the horizontal alignment of the digits within the component. Common values would be:

• TextLineNumber.LEFT
• TextLineNumber.CENTER
• TextLineNumber.RIGHT (default)

getMinimumDisplayDigits

public int getMinimumDisplayDigits()

Gets the minimum display digits

Returns:

the minimum display digits

setMinimumDisplayDigits

public void setMinimumDisplayDigits(int minimumDisplayDigits)

Specify the minimum number of digits used to calculate the preferred width of the component.

Parameters:

minimumDisplayDigits - the number digits used in the preferred width calculation

paintComponent

public void paintComponent(Graphics g)

Draw the line numbers

Overrides:

paintComponent in class JComponent

getTextLineNumber

protected String getTextLineNumber(int rowStartOffset)

caretUpdate

public void caretUpdate(CaretEvent e)

Specified by:

caretUpdate in interface CaretListener

changedUpdate

public void changedUpdate(DocumentEvent e)

Specified by:

changedUpdate in interface DocumentListener

insertUpdate

public void insertUpdate(DocumentEvent e)

Specified by:

insertUpdate in interface DocumentListener

removeUpdate

public void removeUpdate(DocumentEvent e)

Specified by:

removeUpdate in interface DocumentListener

propertyChange

public void propertyChange(PropertyChangeEvent evt)

Specified by:

propertyChange in interface PropertyChangeListener

componentResized

public void componentResized(ComponentEvent e)

Specified by:

componentResized in interface ComponentListener

componentMoved

public void componentMoved(ComponentEvent e)

Specified by:

componentMoved in interface ComponentListener

componentShown

public void componentShown(ComponentEvent e)

Specified by:

componentShown in interface ComponentListener

componentHidden

public void componentHidden(ComponentEvent e)

Specified by:

componentHidden in interface ComponentListener