Inheritance diagram for StrMutSelectionObserver:

Public Member Functions
	StrMutSelectionObserver (IPMUnknown *boss)

virtual	~StrMutSelectionObserver ()

virtual void	AutoAttach ()

virtual void	AutoDetach ()

Public Member Functions inherited from ActiveSelectionObserver
	ActiveSelectionObserver (IPMUnknown *boss, PMIID observerIID=IID_IOBSERVER)

virtual void	Update (const ClassID &c, ISubject , const PMIID &p, void v)

Public Member Functions inherited from CObserver
	CObserver (IPMUnknown *boss, PMIID interfaceID=IID_IOBSERVER)

IChangeManager *	GetChangeManager () const

virtual void	SetAttachIID (PMIID iid)

virtual PMIID	GetAttachIID () const

virtual void	SetEnabled (bool16 state)

virtual bool16	IsEnabled () const

virtual void	LazyUpdate (ISubject theSubject, const PMIID &protocol, const LazyNotificationData data)

Protected Member Functions
virtual void	HandleSelectionUpdate (const ClassID &theChange, ISubject theSubject, const PMIID &protocol, void changedBy)

virtual void	HandleSelectionChanged (const ISelectionMessage *selectionMessage)

virtual void	HandleSelectionAttributeChanged (const ISelectionMessage *selectionMessage)

Protected Member Functions inherited from ActiveSelectionObserver
virtual void	HandleFrequentSelectionChanged ()

virtual void	AttachToSelectionSubject (ISubject *selectionSubject)

virtual void	DetachFromSelectionSubject (ISubject *selectionSubject)

virtual void	HandleActiveSelectionChanged ()

virtual IPMUnknown *	QueryAbstractSelection (const PMIID &p)

virtual void	AttachToActiveSelection ()

virtual void	DetachFromActiveSelection ()

Additional Inherited Members
Public Types inherited from IObserver
enum	{ kDefaultIID = IID_IOBSERVER }

Protected Attributes inherited from ActiveSelectionObserver
PMIID	fObserverIID

ISelectionManager *	fCurrentSelection

Detailed Description

Implements an observer, IObserver based on ActiveSelectionObserver, that updates the stroke weight displayed in the panel's widget when the stroke weight of the selected objects change, and updates the stroke weight of the selected objects when the user changes the value of the panel's stroke weight widget.

The panel's stroke weight widget is maintained in a way that mimics the value displayed in the Stroke Weight panel.

The implementation shows how to specialise ActiveSelectionObserver so that widgets can be observed in addition to the selection within within a single observer implementation.

IStrokeAttributeSuite is used to get and change the stroke weight which is maintained by a widget on the panel. IGraphicAttributeSuite is used to determine if the stroke is being actively drawn or not.

See Also: IStrokeAttributeSuite; IGraphicAttributeSuite

Constructor & Destructor Documentation

StrMutSelectionObserver::StrMutSelectionObserver ( IPMUnknown * boss )

Constructor.

Parameters

boss	interface ptr from boss object on which this interface is aggregated.

StrMutSelectionObserver::~StrMutSelectionObserver ( )

virtual

Destructor.

Member Function Documentation

void StrMutSelectionObserver::AutoAttach ( void )

virtual

Attaches observer to the panel's widget and calls parent class to attach to the active selection.

Reimplemented from ActiveSelectionObserver.

void StrMutSelectionObserver::AutoDetach ( void )

virtual

Detaches observer from the panel's widget and calls parent class to detach from the active selection.

Reimplemented from ActiveSelectionObserver.

void StrMutSelectionObserver::HandleSelectionAttributeChanged ( const ISelectionMessage * selectionMessage )

protectedvirtual

Called when a property of the selection changes, stroke weight or color for example. Note: It is important that client code examine the message parameter and only update when data that the client needs has changed. The client can be called when data that it is not interested in changes and it is important for performance reasons that these calls are filtered so that unnecessary updates don't take place.

Parameters

selectionMessage client code must examine the message and only update when a message is received from the suite that manages the properties that are being displayed.

Reimplemented from ActiveSelectionObserver.

void StrMutSelectionObserver::HandleSelectionChanged ( const ISelectionMessage * selectionMessage )

protectedvirtual

Called when there is a new active selection or when objects are added or removed from the selection.

Parameters

selectionMessage IN message from the selection about the change, if the pointer is nil then widgets must be updated to synchronise with the new selection, otherwise the client can examine the message to see if the change that has taken place requires them to update.

Reimplemented from ActiveSelectionObserver.

void StrMutSelectionObserver::HandleSelectionUpdate	(	const ClassID &	theChange,
		ISubject *	theSubject,
		const PMIID &	protocol,
		void *	changedBy
	)

protectedvirtual

Called when the observed subjects change, in this case when the panel's widget is changed or when the active selection changes. Events resulting from widget clicks are handled here, selection events are passed to the parent class.

Parameters

theChange	specifies the class ID of the change to the subject. Frequently this is a command ID.
theSubject	points to the ISubject interface for the subject that has changed.
protocol	specifies the ID of the changed interface on the subject boss.
changedBy	points to additional data about the change. Often this pointer indicates the class ID of the command that has caused the change.

Reimplemented from ActiveSelectionObserver.

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation