de.xeinfach.kafenio.component
Class SyntaxPane

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.text.JTextComponent
                  javax.swing.JEditorPane
                      javax.swing.JTextPane
                          de.xeinfach.kafenio.component.SyntaxPane

All Implemented Interfaces:

javax.accessibility.Accessible, javax.swing.event.CaretListener, java.util.EventListener, java.awt.image.ImageObserver, java.awt.MenuContainer, javax.swing.Scrollable, java.io.Serializable

public class SyntaxPane

extends javax.swing.JTextPane

implements javax.swing.event.CaretListener

Description: An editor pane with syntax highlighting for HTML tags.

This is a basic approach to syntax highlighting using regular expressions. It is used to make the plain HTML view of application SimplyHTML more legible by separating tags and attributes from content.

The method doing the actual highlighting work is put into an implementation of the Runnable interface so that it can be called without conflicts.

Can be refined in the way Patterns are set up, i.e. not hard wire pattern setup and a GUI to let the use choose styles for patterns.

This class only works with java versions 1.4 and newer

Recommended readings:
'Regular Expressions and the JavaTM Programming Language' at
http://developer.java.sun.com/developer/technicalArticles/releases/1.4regex/
and
Presentation slides 'Rich Clients for Web Services' from JavaOne 2002 at
http://servlet.java.sun.com/javaone/resources/content/sf2002/conf/sessions/pdfs/2274.pdf

Author:

Ulrich Hilger info@lightdev.com, Karsten Pawlik

See Also:

Serialized Form

Nested Class Summary

class

SyntaxPane.RegExStyle internal convenience class associating a pattern with a set of attributes

Nested classes inherited from class javax.swing.JEditorPane

javax.swing.JEditorPane.AccessibleJEditorPane, javax.swing.JEditorPane.AccessibleJEditorPaneHTML, javax.swing.JEditorPane.JEditorPaneAccessibleHypertextSupport

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

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

Nested classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Nested classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

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

Field Summary

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

SyntaxPane()
Creates a new SyntaxPane.

Method Summary

void	caretUpdate(javax.swing.event.CaretEvent e) CaretListener implementation updates syntax highlighting for the current line when the caret moves
boolean	getScrollableTracksViewportWidth() overridden from JEditorPane to suppress line wraps
void	setMarks(javax.swing.text.StyledDocument doc, int offset, int len) apply syntax highlighting to all HTML tags found in the given area of the given document
void	setSize(java.awt.Dimension d) overridden from JEditorPane to suppress line wraps
void	setText(java.lang.String t) overridden to keep caret changes during the initial text load from triggering syntax highlighting repetitively

Methods inherited from class javax.swing.JTextPane

addStyle, createDefaultEditorKit, getCharacterAttributes, getInputAttributes, getLogicalStyle, getParagraphAttributes, getStyle, getStyledDocument, getStyledEditorKit, getUIClassID, insertComponent, insertIcon, paramString, removeStyle, replaceSelection, setCharacterAttributes, setDocument, setEditorKit, setLogicalStyle, setParagraphAttributes, setStyledDocument

Methods inherited from class javax.swing.JEditorPane

addHyperlinkListener, createEditorKitForContentType, fireHyperlinkUpdate, getAccessibleContext, getContentType, getEditorKit, getEditorKitClassNameForContentType, getEditorKitForContentType, getHyperlinkListeners, getPage, getPreferredSize, getScrollableTracksViewportHeight, getStream, getText, read, registerEditorKitForContentType, registerEditorKitForContentType, removeHyperlinkListener, scrollToReference, setContentType, setEditorKitForContentType, setPage, setPage

Methods inherited from class javax.swing.text.JTextComponent

addCaretListener, addInputMethodListener, addKeymap, copy, cut, fireCaretUpdate, getActions, getCaret, getCaretColor, getCaretListeners, getCaretPosition, getDisabledTextColor, getDocument, getDragEnabled, getFocusAccelerator, getHighlighter, getInputMethodRequests, getKeymap, getKeymap, getMargin, getNavigationFilter, getPreferredScrollableViewportSize, getScrollableBlockIncrement, getScrollableUnitIncrement, getSelectedText, getSelectedTextColor, getSelectionColor, getSelectionEnd, getSelectionStart, getText, getToolTipText, getUI, isEditable, loadKeymap, modelToView, moveCaretPosition, paste, processInputMethodEvent, read, removeCaretListener, removeKeymap, removeNotify, select, selectAll, setCaret, setCaretColor, setCaretPosition, setComponentOrientation, setDisabledTextColor, setDragEnabled, setEditable, setFocusAccelerator, setHighlighter, setKeymap, setMargin, setNavigationFilter, setSelectedTextColor, setSelectionColor, setSelectionEnd, setSelectionStart, setUI, updateUI, viewToModel, write

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, 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, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, 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, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, 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, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Constructor Detail

SyntaxPane

public SyntaxPane()

Creates a new SyntaxPane.

Method Detail

setMarks

public void setMarks(javax.swing.text.StyledDocument doc,
                     int offset,
                     int len)

apply syntax highlighting to all HTML tags found in the given area of the given document

Parameters:

doc - document to apply syntax highlighting to

offset - position inside the given document to start to apply syntax highlighting to

len - number of characters to apply syntax highlighting to

getScrollableTracksViewportWidth

public boolean getScrollableTracksViewportWidth()

overridden from JEditorPane to suppress line wraps

Specified by:

getScrollableTracksViewportWidth in interface javax.swing.Scrollable

See Also:

setSize

setSize

public void setSize(java.awt.Dimension d)

overridden from JEditorPane to suppress line wraps

See Also:

getScrollableTracksViewportWidth

caretUpdate

public void caretUpdate(javax.swing.event.CaretEvent e)

CaretListener implementation

updates syntax highlighting for the current line when the caret moves

Specified by:

caretUpdate in interface javax.swing.event.CaretListener

Parameters:

e - the CaretEvent to process

setText

public void setText(java.lang.String t)

overridden to keep caret changes during the initial text load from triggering syntax highlighting repetitively

Parameters:

t - text to set