com.jidesoft.dialog

Class AbstractPage

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

com.jidesoft.dialog.AbstractPage

All Implemented Interfaces:

Laziness, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

Direct Known Subclasses:

AbstractDialogPage

public abstract class AbstractPage
extends javax.swing.JPanel
implements Laziness

AbstractPage is an abstract base class that provides functionality to defer populating a JPanel object until it is actually viewed. This is very useful when using CardLayout and tab panel views which have several pages. Delaying the construction means it will start up fast. Sometimes delay means never.

If subclasses choose to override any of the following methods, it is their responsibility to ensure their overridden methods call the parent's method first. The methods are:

• public void paint (Graphics)
• public void paintComponents(Graphics)
• public void paintAll (Graphics)
• public void repaint ()
• public void repaint (long)
• public void repaint (int, int, int, int)
• public void repaint (long, int, int, int, int)
• public void update (Graphics)

By default, if any of the methods is called, the panel will be populated. However user can setInvokeCondition() to customize when the panel be populated. See javadoc of setInvokeContion() for details.

The idea of the lazy panel is from an article on JavaWorld at http://www.javaworld.com/javatips/jw-javatip90_p.html. The credit should be given to Mark Roulo. We modified the code he provided in the article to add additional things as we need. Things added are

• Added setInvokeCondition()
• Added addPageListener(), removePageListener() etc so that subclass can fire PageEvent

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JPanel

javax.swing.JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

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

Field Summary

Fields

Modifier and Type	Field and Description
protected PageEvent	_pageEvent Only one DataChangeEvent is needed per model instance since the event's only (read-only) state is the source property.
static int	INVOKE_ON_ALL Used by setInvokeCondition().
static int	INVOKE_ON_NONE Used by setInvokeCondition().
static int	INVOKE_ON_PAINT Used by setInvokeCondition().
static int	INVOKE_ON_REPAINT Used by setInvokeCondition().
static int	INVOKE_ON_UPDATE Used by setInvokeCondition().
static int	INVOKE_ON_VALIDATE Used by setInvokeCondition().

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

Modifier	Constructor and Description
protected	AbstractPage() Creates an AbstractPage.

Method Summary

Modifier and Type	Method and Description
void	addPageListener(PageListener l) Adds a PageListener to the page.
boolean	allowClosing() Allow this document closing.
void	firePageEvent(int id) Runs each PageListener's pageEventFired method.
void	firePageEvent(java.lang.Object source, int id) Runs each PageListener's pageEventFired method.
int	getInvokeCondition() Gets the invoke condition.
PageListener[]	getPageListeners() Returns an array of all the PageListeners added to this Page with addPageListener .
void	initialize() Force the lazyInitialize() method implemented in the child class to be called.
void	invalidate()
void	paint(java.awt.Graphics g)
void	paintAll(java.awt.Graphics g)
void	paintComponents(java.awt.Graphics g)
void	removePageListener(PageListener l) Removes a PageListener from the page.
void	repaint()
void	repaint(int i1, int i2, int i3, int i4)
void	repaint(long l)
void	repaint(long l, int i1, int i2, int i3, int i4)
void	reset() Resets the page which will result all child components being removed and the method initialize() being invoked again.
void	revalidate()
void	setAllowClosing(boolean allowClosing) Sets allow closing.
void	setInvokeCondition(int invokeCondition) Sets the invoke condition.
void	update(java.awt.Graphics g)

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, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, 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

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, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, 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, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, 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

Methods inherited from interface com.jidesoft.dialog.Laziness

lazyInitialize

Field Detail

INVOKE_ON_ALL

public static int INVOKE_ON_ALL

Used by setInvokeCondition(). This value means initialize will be called in all paint/repaint/update methods.

INVOKE_ON_NONE

public static int INVOKE_ON_NONE

Used by setInvokeCondition(). This value means initialize will not be called. You have to call it manually.

INVOKE_ON_PAINT

public static int INVOKE_ON_PAINT

Used by setInvokeCondition(). This value means initialize will be called with paint() is called.

INVOKE_ON_REPAINT

public static int INVOKE_ON_REPAINT

Used by setInvokeCondition(). This value means initialize will be called with repaint() is called.

INVOKE_ON_UPDATE

public static int INVOKE_ON_UPDATE

Used by setInvokeCondition(). This value means initialize will be called with update() is called.

INVOKE_ON_VALIDATE

public static int INVOKE_ON_VALIDATE

Used by setInvokeCondition(). This value means initialize will be called with invalidate(), revalidate() is called.

_pageEvent

protected transient PageEvent _pageEvent

Only one DataChangeEvent is needed per model instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

Constructor Detail

AbstractPage

protected AbstractPage()

Creates an AbstractPage.

Method Detail

getInvokeCondition

public int getInvokeCondition()

Gets the invoke condition. Invoke condition defines how lazy the page is. By default, the lazyInitialize() will be called on any update, paint or repaint method. However you can change the invoke condition to INVOKE_ON_PAINT. If so, lazyInitialize() will be called only when paint() method is called. You can even set the invoke condition to INVOKE_ON_NONE. If so, you will be responsible to call lazyInitialize() since none of those methods methods mentioned above will call lazyInitialize().

Returns:

the invocation condition

setInvokeCondition

public void setInvokeCondition(int invokeCondition)

Sets the invoke condition.

Parameters:

invokeCondition - the invoke condition.

invalidate

public void invalidate()

Overrides:

invalidate in class java.awt.Container

revalidate

public void revalidate()

Overrides:

revalidate in class javax.swing.JComponent

paint

public void paint(java.awt.Graphics g)

Overrides:

paint in class javax.swing.JComponent

paintAll

public void paintAll(java.awt.Graphics g)

Overrides:

paintAll in class java.awt.Component

paintComponents

public void paintComponents(java.awt.Graphics g)

Overrides:

paintComponents in class java.awt.Container

repaint

public void repaint()

Overrides:

repaint in class java.awt.Component

repaint

public void repaint(long l)

Overrides:

repaint in class java.awt.Component

repaint

public void repaint(int i1,
                    int i2,
                    int i3,
                    int i4)

Overrides:

repaint in class java.awt.Component

repaint

public void repaint(long l,
                    int i1,
                    int i2,
                    int i3,
                    int i4)

Overrides:

repaint in class javax.swing.JComponent

update

public void update(java.awt.Graphics g)

Overrides:

update in class javax.swing.JComponent

initialize

public final void initialize()

Force the lazyInitialize() method implemented in the child class to be called. If this method is called more than once on a given object, all calls but the first do nothing.

reset

public void reset()

Resets the page which will result all child components being removed and the method initialize() being invoked again.

Since:

3.2.2

addPageListener

public void addPageListener(PageListener l)

Adds a PageListener to the page.

Parameters:

l - the PageListener to be added

removePageListener

public void removePageListener(PageListener l)

Removes a PageListener from the page.

Parameters:

l - the PageListener to be removed

getPageListeners

public PageListener[] getPageListeners()

Returns an array of all the PageListeners added to this Page with addPageListener .

Returns:

all of the PageListeners added, or an empty array if no listeners have been added

firePageEvent

public void firePageEvent(int id)

Runs each PageListener's pageEventFired method.

Parameters:

id - event id.

firePageEvent

public void firePageEvent(java.lang.Object source,
                          int id)

Runs each PageListener's pageEventFired method.

Parameters:

source - of this event

id - event id.

setAllowClosing

public void setAllowClosing(boolean allowClosing)

Sets allow closing. If true, the document cannot be closed. user can change the value in documentClosing() to prevent document from being closed.

Parameters:

allowClosing - true or false.

allowClosing

public boolean allowClosing()

Allow this document closing. By default it return true. User can override this method to return based on condition. A typical user case is: add a DocumentComponentListener. In documentComponentClosing, make this method return to false to prevent it from being closed.

Returns:

whether allow closing