Class JESGutter

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--JESGutter

All Implemented Interfaces:

javax.swing.event.DocumentListener, java.util.EventListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

public class JESGutter

extends javax.swing.JComponent

implements javax.swing.event.DocumentListener

The JES Gutter Created for the Jython Environment for Students The JES Gutter is a side bar that shows useful contextual information about the document being currently edited. It shows line numbers, block marking, and demarcates def statements.

See Also:

Serialized Form

Field Summary

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

JESGutter(javax.swing.JEditorPane tc, java.awt.Font f)
Class constructor Creates a Gutter object with a given TextComponent.

Method Summary

void	changedUpdate(javax.swing.event.DocumentEvent e) Method: changedUpdate Gives notification that an attribute or set of attributes changed.
void	insertUpdate(javax.swing.event.DocumentEvent e) Method: insertUpdate Gives notification that there was text inserted into the document.
void	paint(java.awt.Graphics g) paint Paints gutter information to the graphics object
void	removeUpdate(javax.swing.event.DocumentEvent e) Method: removeUpdate Gives notifications that text was removed from the document.
void	setDocument(javax.swing.text.Document doc) setDocument Sets the document for the gutter to listen for changes in.
void	setLine(int line, int indent, int height) setLine Adds a line to the gutter.
void	setTextComponent(javax.swing.JEditorPane tc) setTextComponent() Sets th etext component the gutter models itself after
void	updateLines() updateLines Recounts the number of lines in the Document, and updates the lines list to have the new last few lines.

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, getAccessibleContext, 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, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, 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, updateUI

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, addInputMethodListener, 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, getInputMethodRequests, 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, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, 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

Constructor Detail

JESGutter

public JESGutter(javax.swing.JEditorPane tc,
                 java.awt.Font f)

Class constructor Creates a Gutter object with a given TextComponent.

Method Detail

setLine

public void setLine(int line,
                    int indent,
                    int height)

setLine Adds a line to the gutter. includes indentation information and y height.

Parameters:

line - The line number being added

indent - The indentation level of the line

height - The Y location information of the bottom of the line

setDocument

public void setDocument(javax.swing.text.Document doc)

setDocument Sets the document for the gutter to listen for changes in. When a change occurs check to see if a newline was added or removed.

Parameters:

doc - The document to listen to

setTextComponent

public void setTextComponent(javax.swing.JEditorPane tc)

setTextComponent() Sets th etext component the gutter models itself after

Parameters:

tc - The text component

paint

public void paint(java.awt.Graphics g)

paint Paints gutter information to the graphics object

Overrides:

paint in class javax.swing.JComponent

updateLines

public void updateLines()

updateLines Recounts the number of lines in the Document, and updates the lines list to have the new last few lines.

changedUpdate

public void changedUpdate(javax.swing.event.DocumentEvent e)

Method: changedUpdate Gives notification that an attribute or set of attributes changed.

Specified by:

changedUpdate in interface javax.swing.event.DocumentListener

Parameters:

e - The DocumentEvent describing the change

insertUpdate

public void insertUpdate(javax.swing.event.DocumentEvent e)

Method: insertUpdate Gives notification that there was text inserted into the document.

Specified by:

insertUpdate in interface javax.swing.event.DocumentListener

Parameters:

e - the DocumentEvent describing the insert

removeUpdate

public void removeUpdate(javax.swing.event.DocumentEvent e)

Method: removeUpdate Gives notifications that text was removed from the document.

Specified by:

removeUpdate in interface javax.swing.event.DocumentListener

Parameters:

e - the DocumentEvent describing the removal