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JavaTM 2 Platform Std. Ed. v1.4.2

javax.swing
Class JSpinner.DefaultEditor

java.lang.Object
  extended byjava.awt.Component
      extended byjava.awt.Container
          extended byjavax.swing.JComponent
              extended byjavax.swing.JPanel
                  extended byjavax.swing.JSpinner.DefaultEditor
All Implemented Interfaces:
Accessible, ChangeListener, EventListener, ImageObserver, LayoutManager, MenuContainer, PropertyChangeListener, Serializable
Direct Known Subclasses:
JSpinner.DateEditor, JSpinner.ListEditor, JSpinner.NumberEditor
Enclosing class:
JSpinner
public static class JSpinner.DefaultEditor
extends JPanel
implements ChangeListener, PropertyChangeListener, LayoutManager

A simple base class for more specialized editors that displays a read-only view of the model's current value with a JFormattedTextField. Subclasses can configure the JFormattedTextField to create an editor that's appropriate for the type of model they support and they may want to override the stateChanged and propertyChanged methods, which keep the model and the text field in sync.

This class defines a dismiss method that removes the editors ChangeListener from the JSpinner that it's part of. The setEditor method knows about DefaultEditor.dismiss, so if the developer replaces an editor that's derived from JSpinner.DefaultEditor its ChangeListener connection back to the JSpinner will be removed. However after that, it's up to the developer to manage their editor listeners. Similarly, if a subclass overrides createEditor, it's up to the subclasser to deal with their editor subsequently being replaced (with setEditor). We expect that in most cases, and in editor installed with setEditor or created by a createEditor override, will not be replaced anyway.

This class is the LayoutManager for it's single JFormattedTextField child. By default the child is just centered with the parents insets.

Nested Class Summary
 
Nested classes inherited from class javax.swing.JPanel
JPanel.AccessibleJPanel
 
Nested classes inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt.Container
Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy
 
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
JSpinner.DefaultEditor(JSpinner spinner)
          Constructs an editor component for the specified JSpinner.
 
Method Summary
 void addLayoutComponent(String name, Component child)
          This LayoutManager method does nothing.
 void commitEdit()
          Pushes the currently edited value to the SpinnerModel.
 void dismiss(JSpinner spinner)
          Disconnect this editor from the specified JSpinner.
 JSpinner getSpinner()
          Returns the JSpinner ancestor of this editor or null.
 JFormattedTextField getTextField()
          Returns the JFormattedTextField child of this editor.
 void layoutContainer(Container parent)
          Resize the one (and only) child to completely fill the area within the parents insets.
 Dimension minimumLayoutSize(Container parent)
          Returns the minimum size of first (and only) child plus the size of the parents insets.
 Dimension preferredLayoutSize(Container parent)
          Returns the preferred size of first (and only) child plus the size of the parents insets.
 void propertyChange(PropertyChangeEvent e)
          Called by the JFormattedTextField PropertyChangeListener.
 void removeLayoutComponent(Component child)
          This LayoutManager method does nothing.
 void stateChanged(ChangeEvent e)
          This method is called when the spinner's model's state changes.
 
Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI
 
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, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, 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, 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
 
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

JSpinner.DefaultEditor

public JSpinner.DefaultEditor(JSpinner spinner)
Constructs an editor component for the specified JSpinner. This DefaultEditor is it's own layout manager and it is added to the spinner's ChangeListener list. The constructor creates a single JFormattedTextField child, initializes it's value to be the spinner model's current value and adds it to this DefaultEditor.

Parameters:
spinner - the spinner whose model this editor will monitor
See Also:
getTextField(), JSpinner.addChangeListener(javax.swing.event.ChangeListener)
Method Detail

dismiss

public void dismiss(JSpinner spinner)
Disconnect this editor from the specified JSpinner. By default, this method removes itself from the spinners ChangeListener list.

Parameters:
spinner - the JSpinner to disconnect this editor from; the same spinner as was passed to the constructor.

getSpinner

public JSpinner getSpinner()
Returns the JSpinner ancestor of this editor or null. Typically the editor's parent is a JSpinner however subclasses of may override the the createEditor method and insert one or more containers between the JSpinner and it's editor.

Returns:
JSpinner ancestor
See Also:
JSpinner.createEditor(javax.swing.SpinnerModel)

getTextField

public JFormattedTextField getTextField()
Returns the JFormattedTextField child of this editor. By default the text field is the first and only child of editor.

Returns:
the JFormattedTextField that gives the user access to the SpinnerDateModel's value.
See Also:
getSpinner(), JSpinner.getModel()

stateChanged

public void stateChanged(ChangeEvent e)
This method is called when the spinner's model's state changes. It sets the value of the text field to the current value of the spinners model.

Specified by:
stateChanged in interface ChangeListener
Parameters:
e - not used
See Also:
getTextField(), JSpinner.getValue()

propertyChange

public void propertyChange(PropertyChangeEvent e)
Called by the JFormattedTextField PropertyChangeListener. When the "value" property changes, which implies that the user has typed a new number, we set the value of the spinners model.

This class ignores PropertyChangeEvents whose source is not the JFormattedTextField, so subclasses may safely make this DefaultEditor a PropertyChangeListener on other objects.

Specified by:
propertyChange in interface PropertyChangeListener
Parameters:
e - the PropertyChangeEvent whose source is the JFormattedTextField created by this class.
See Also:
getTextField()

addLayoutComponent

public void addLayoutComponent(String name,
                               Component child)
This LayoutManager method does nothing. We're only managing a single child and there's no support for layout constraints.

Specified by:
addLayoutComponent in interface LayoutManager
Parameters:
name - ignored
child - ignored

removeLayoutComponent

public void removeLayoutComponent(Component child)
This LayoutManager method does nothing. There isn't any per-child state.

Specified by:
removeLayoutComponent in interface LayoutManager
Parameters:
child - ignored

preferredLayoutSize

public Dimension preferredLayoutSize(Container parent)
Returns the preferred size of first (and only) child plus the size of the parents insets.

Specified by:
preferredLayoutSize in interface LayoutManager
Parameters:
parent - the Container that's managing the layout
Returns:
the preferred dimensions to lay out the subcomponents of the specified container.
See Also:
LayoutManager.minimumLayoutSize(java.awt.Container)

minimumLayoutSize

public Dimension minimumLayoutSize(Container parent)
Returns the minimum size of first (and only) child plus the size of the parents insets.

Specified by:
minimumLayoutSize in interface LayoutManager
Parameters:
parent - the Container that's managing the layout
Returns:
the minimum dimensions needed to lay out the subcomponents of the specified container.
See Also:
LayoutManager.preferredLayoutSize(java.awt.Container)

layoutContainer

public void layoutContainer(Container parent)
Resize the one (and only) child to completely fill the area within the parents insets.

Specified by:
layoutContainer in interface LayoutManager
Parameters:
parent - the container to be laid out

commitEdit

public void commitEdit()
                throws ParseException
Pushes the currently edited value to the SpinnerModel.

The default implementation invokes commitEdit on the JFormattedTextField.

Throws:
ParseException - if the edited value is not legal
Copyright 2003 Sun Microsystems, Inc. All rights reserved