edu.mit.ai.psg.jexa
Class BeanRenderer

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--edu.mit.ai.psg.ui.outliner.OutlineRendererDefault
                          |
                          +--edu.mit.ai.psg.ui.outliner.OutlineRendererCaching
                                |
                                +--edu.mit.ai.psg.jexa.ObjectRenderer
                                      |
                                      +--edu.mit.ai.psg.jexa.BeanRenderer

public class BeanRenderer

extends ObjectRenderer

BeanRenderer: displays an object's JavaBean properties (uncovered using java.beans.Introspector and elements of arrays.

See Also:

Serialized Form

Inner classes inherited from class edu.mit.ai.psg.ui.outliner.OutlineRendererDefault

OutlineRendererDefault.OutlineText

Inner classes inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Field Summary

static int

maxChildIndex max number of child outline nodes to create for arrays or indexed properties.

Fields inherited from class edu.mit.ai.psg.jexa.ObjectRenderer

defaultFont

Fields inherited from class edu.mit.ai.psg.ui.outliner.OutlineRendererDefault

defaultToolTipText, labelComponent, myOutlineMaker, objectComponent

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

Constructor Summary

BeanRenderer(OutlineMaker outlineMaker)

Method Summary

static Method	findInvokeableMethod(Method method, Class targetClass) Find a Method which can be invoked or null if none found; used to get the value of the property described by a descriptor, Returns null if method is null, so it's easy to use as
static void	initialize(OutlineMaker outlineMaker) Call initialize to install instance in outliner for any instance of java.lang.Object (called by Jexa())
List	makeChildOutlineNodes(OutlineNode outlineNode) Uses java.beans.Introspector to display properties of objects when viewed as a JavaBean.
static PropertyDescriptor[]	sortDescriptorsByReadMethodOrder(PropertyDescriptor[] descriptors, Class objClass) Introspector keeps properties in a hashtable which obfuscates the order.

Methods inherited from class edu.mit.ai.psg.jexa.ObjectRenderer

addFieldOutlineNodes, addPopupMenuTitle, computeLabelText, computeObjectText, isPublicToTopLevel, makeOutlineNode

Methods inherited from class edu.mit.ai.psg.ui.outliner.OutlineRendererCaching

decacheLabelText, decacheObjectText, decacheToolTipText, getLabelText, getLabelTextCacheKey, getObjectText, getObjectTextCacheKey, getToolTipText, getToolTipTextCacheKey, makeLabelTextCache, makeObjectTextCache, makeToolTipTextCache, notifyInserted

Methods inherited from class edu.mit.ai.psg.ui.outliner.OutlineRendererDefault

addPopupMenuItems, computeLabelText, computeObjectText, computeToolTipText, equals, getLabelComponent, getObjectComponent, getOutlineMaker, getTreeCellRendererComponent, isShowing, makeNoteOutlineNode, makeOutlineNode, notifyRemoving, paint, toString

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getAlignmentX, getAlignmentY, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getGraphics, getHeight, getInsets, getInsets, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getUIClassID, getVisibleRect, getWidth, getX, getY, grabFocus, hasFocus, isDoubleBuffered, isFocusCycleRoot, isFocusTraversable, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, processComponentKeyEvent, processFocusEvent, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDoubleBuffered, setEnabled, setFont, setForeground, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setUI, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setCursor, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hide, imageUpdate, inside, isDisplayable, isEnabled, isLightweight, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processInputMethodEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setDropTarget, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, transferFocus

Methods inherited from class java.lang.Object

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

Field Detail

maxChildIndex

public static int maxChildIndex

max number of child outline nodes to create for arrays or indexed properties. 20 by default.

Constructor Detail

BeanRenderer

public BeanRenderer(OutlineMaker outlineMaker)

Method Detail

makeChildOutlineNodes

public List makeChildOutlineNodes(OutlineNode outlineNode)

Uses java.beans.Introspector to display properties of objects when viewed as a JavaBean. (java.beans.Introspector defaults to creating property descriptors for the object's public no-arg get- or is- methods.) Also shows elements of arrays.

Overrides:

makeChildOutlineNodes in class ObjectRenderer

sortDescriptorsByReadMethodOrder

public static PropertyDescriptor[] sortDescriptorsByReadMethodOrder(PropertyDescriptor[] descriptors,
                                                                    Class objClass)

Introspector keeps properties in a hashtable which obfuscates the order. Restore to order as returned by objClass.getMethods (which should reflect order in source code), using each property's read method (or indexed read method). Properties that do not have either read method are omitted, so returned array may be shorter than input array.

findInvokeableMethod

public static Method findInvokeableMethod(Method method,
                                          Class targetClass)

Find a Method which can be invoked or null if none found; used to get the value of the property described by a descriptor, Returns null if method is null, so it's easy to use as

.  method = findInvokeableMethod(propertyDescriptor.getReadMethod(),
.                                objectClass)

(Note that java.beans.Introspector defaults to creating property descriptors for the object's public no-arg get- or is- methods, and returning the reflection of these methods as the read methods for the descriptors. However, if a public method is declared in a non-public class, its reflection will not be invokeable (throws IllegalAccessException). If the object also implements a public interface with a method of the same signature, then the property may be read through the reflection of the interface method, so that is returned instead. Nested classes and interfaces are considered public only if they and all their enclosing classes or interfaces are public.)

initialize

public static void initialize(OutlineMaker outlineMaker)

Call initialize to install instance in outliner for any instance of java.lang.Object (called by Jexa())