MassObservable< OBSERVED > Class Template Reference

#include <observable.h>

Inheritance diagram for MassObservable< OBSERVED >:

Collaboration diagram for MassObservable< OBSERVED >:

Public Member Functions
	MassObservable (UpdateManager *um=NULL)
void	setUpdateManager (UpdateManager *um)
virtual void	update (OBSERVED what)
virtual void	updateLayout (OBSERVED what)
void	connectObserver (Observer< OBSERVED > *o)
void	disconnectObserver (Observer< OBSERVED > *o)
bool	connectObserver (QObject *o, const char *slot)
bool	disconnectObserver (QObject *o, const char *slot=0)

Protected Member Functions
virtual void	updateNow (UpdateMemento *what)

Protected Attributes
QSet< Observer< OBSERVED > * >	m_observers
Private_Signal *	changedSignal
UpdateManager *	m_um

Friends
class	UpdateManager

Detailed Description

template<class OBSERVED>
class MassObservable< OBSERVED >

An MassObservable is basically just the source of a changed() signal. Observers can register via the Qt signal/slot mechanism or via the above interface.

The difference to Observable (below) is that a MassObservable doesnt report changes to itself but to a bunch of SingleObservables. When you call update() on the SingleObservable, it will tell the associated MassObservable to notify all observers with the "changed" signal, providing a pointer to the single Observable.

The class parameter OBSERVED is usually a pointer to a subclass of SingleObservable.

MassObservable does not inherit QObject since that makes it difficult to use it as a mixin class.

Member Function Documentation

template<class OBSERVED >

void MassObservable< OBSERVED >::setUpdateManager ( UpdateManager *  um )

inline

Used if the UpdateManager is not available when the constructor is called

template<class OBSERVED>

void MassObservable< OBSERVED >::update ( OBSERVED  what )

inlinevirtual

This method will be called by the SingleObservable. If updates are enabled, it calls updateNow() directly, otherwise the undomanager will take care of that.

template<class OBSERVED>

void MassObservable< OBSERVED >::updateLayout ( OBSERVED  what )

inlinevirtual

Same as update, except layout will be update immediately

template<class OBSERVED >

void MassObservable< OBSERVED >::updateNow ( UpdateMemento *  what )

inlineprotectedvirtual

This method will be called by the updatemanager or by update()

Implements UpdateManaged.

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The documentation for this class was generated from the following file:

• /Users/ale/src/Scribus/scribus/observable.h