net.wotonomy.ui.swing
Class ButtonAssociation

java.lang.Object
  net.wotonomy.control.EODelayedObserver
      net.wotonomy.ui.EOAssociation
          net.wotonomy.ui.swing.ButtonAssociation

All Implemented Interfaces:

java.util.EventListener, java.util.Observer, javax.swing.event.ChangeListener, net.wotonomy.control.EOObserving

public class ButtonAssociation
extends net.wotonomy.ui.EOAssociation
implements javax.swing.event.ChangeListener

ButtonAssociation binds any component that uses a ButtonModel (all Swing button classes) to a display group. This association should be used to handle individual JRadioButtons and JCheckBoxes. Bindings are:

• value: a boolean property that determines the selected state of the button model. This will set the value for radio buttons and check boxes.
• enabled: a boolean property that determines the enabled state of the button model.
• visible: a boolean property that determines the visible state of the button model.

Version:

$Revision: 904 $

Author:

michael@mpowers.net, $Author: cgruber $

Field Summary

protected javax.swing.ButtonModel	buttonModel
protected boolean	lastKnownValue

Fields inherited from class net.wotonomy.ui.EOAssociation

ActionAspect, ArgumentAspect, aspectToGroup, aspectToKey, AttributeAspectSignature, AttributeToManyAspectSignature, AttributeToOneAspectSignature, AttributeToOneToManyAspectSignature, BoldAspect, ChildrenAspect, control, DestinationAspect, EditableAspect, EnabledAspect, IconAspect, IsLeafAspect, ItalicAspect, LabelAspect, NullAspectSignature, ObjectsAspect, ParentAspect, SelectedObjectAspect, SelectedTitleAspect, SourceAspect, TitlesAspect, ToManyAspectSignature, ToOneAspectSignature, ToOneToManyAspectSignature, URLAspect, ValueAspect, VisibleAspect

Fields inherited from class net.wotonomy.control.EODelayedObserver

ObserverNumberOfPriorities, ObserverPriorityFifth, ObserverPriorityFirst, ObserverPriorityFourth, ObserverPriorityImmediate, ObserverPriorityLater, ObserverPrioritySecond, ObserverPrioritySixth, ObserverPriorityThird

Constructor Summary

ButtonAssociation(java.lang.Object anObject)
Constructor specifying the object to be controlled by this association.

Method Summary

static net.wotonomy.foundation.NSArray	aspects() Returns a List that describes the aspects supported by this class.
static net.wotonomy.foundation.NSArray	aspectSignatures() Returns a List of aspect signatures whose contents correspond with the aspects list.
static net.wotonomy.foundation.NSArray	associationClassesSuperseded() Returns a List of EOAssociation subclasses that, for the objects that are usable for this association, are less suitable than this association.
void	breakConnection() Breaks the connection between this association and its object.
boolean	canBindAspect(java.lang.String anAspect, net.wotonomy.ui.EODisplayGroup aDisplayGroup, java.lang.String aKey) Returns whether this association can bind to the specified display group on the specified key for the specified aspect.
void	establishConnection() Establishes a connection between this association and the controlled object.
static boolean	isUsableWithObject(java.lang.Object anObject) Returns whether this class can control the specified object.
static net.wotonomy.foundation.NSArray	objectKeysTaken() Returns a List of properties of the controlled object that are controlled by this class.
static java.lang.String	primaryAspect() Returns the aspect that is considered primary or default.
void	stateChanged(javax.swing.event.ChangeEvent e)
void	subjectChanged() Called when either the selection or the contents of an associated display group have changed.
protected boolean	writeValueToDisplayGroup() Writes the value currently in the component to the selected object in the display group bound to the value aspect.

Methods inherited from class net.wotonomy.ui.EOAssociation

associationClassesForObject, bindAspect, copyMatchingBindingsFromAssociation, displayGroupForAspect, displayGroupKeyForAspect, displayName, endEditing, object, setValueForAspect, setValueForAspectAtIndex, shouldEndEditing, shouldEndEditingAtIndex, valueForAspect, valueForAspectAtIndex

Methods inherited from class net.wotonomy.control.EODelayedObserver

discardPendingNotification, objectWillChange, observerQueue, priority, update

Methods inherited from class java.lang.Object

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

Field Detail

buttonModel

protected javax.swing.ButtonModel buttonModel

lastKnownValue

protected boolean lastKnownValue

Constructor Detail

ButtonAssociation

public ButtonAssociation(java.lang.Object anObject)

Constructor specifying the object to be controlled by this association. Does not establish connection. This implementation expects a ButtonModel or a class that has a "getModel" method that returns a ButtonModel.

Method Detail

aspectSignatures

public static net.wotonomy.foundation.NSArray aspectSignatures()

Returns a List of aspect signatures whose contents correspond with the aspects list. Each element is a string whose characters represent a capability of the corresponding aspect.

• "A" attribute: the aspect can be bound to an attribute.
• "1" to-one: the aspect can be bound to a property that returns a single object.
• "M" to-one: the aspect can be bound to a property that returns multiple objects.

An empty signature "" means that the aspect can bind without needing a key. This implementation returns "A1M" for each element in the aspects array.

aspects

public static net.wotonomy.foundation.NSArray aspects()

Returns a List that describes the aspects supported by this class. Each element in the list is the string name of the aspect. This implementation returns an empty list.

associationClassesSuperseded

public static net.wotonomy.foundation.NSArray associationClassesSuperseded()

Returns a List of EOAssociation subclasses that, for the objects that are usable for this association, are less suitable than this association.

isUsableWithObject

public static boolean isUsableWithObject(java.lang.Object anObject)

Returns whether this class can control the specified object. This implementation expects a ButtonModel or a class that has a "getModel" method that returns a ButtonModel.

objectKeysTaken

public static net.wotonomy.foundation.NSArray objectKeysTaken()

Returns a List of properties of the controlled object that are controlled by this class. For example, "stringValue", or "selected".

primaryAspect

public static java.lang.String primaryAspect()

Returns the aspect that is considered primary or default.

canBindAspect

public boolean canBindAspect(java.lang.String anAspect,
                             net.wotonomy.ui.EODisplayGroup aDisplayGroup,
                             java.lang.String aKey)

Returns whether this association can bind to the specified display group on the specified key for the specified aspect.

Overrides:

canBindAspect in class net.wotonomy.ui.EOAssociation

establishConnection

public void establishConnection()

Establishes a connection between this association and the controlled object. Subclasses should begin listening for events from their controlled object here.

Overrides:

establishConnection in class net.wotonomy.ui.EOAssociation

breakConnection

public void breakConnection()

Breaks the connection between this association and its object. Override to stop listening for events from the object.

Overrides:

breakConnection in class net.wotonomy.ui.EOAssociation

subjectChanged

public void subjectChanged()

Called when either the selection or the contents of an associated display group have changed. This implementation does nothing.

Overrides:

subjectChanged in class net.wotonomy.ui.EOAssociation

writeValueToDisplayGroup

protected boolean writeValueToDisplayGroup()

Writes the value currently in the component to the selected object in the display group bound to the value aspect.

Returns:

false if there were problems validating, or true to continue.

stateChanged

public void stateChanged(javax.swing.event.ChangeEvent e)

Specified by:

stateChanged in interface javax.swing.event.ChangeListener