tlp::GraphNeedsSavingObserver Class Reference

#include <GraphNeedsSavingObserver.h>

Inherits QObject, and tlp::Observable.

Signals
void	savingNeeded ()

Public Member Functions
	GraphNeedsSavingObserver (Graph *graph)
bool	needsSaving () const
void	saved ()

Protected Member Functions
virtual void	treatEvents (const std::vector< Event > &)

Additional Inherited Members
Private Member Functions inherited from tlp::Observable
void	addListener (Observable *const listener) const
void	addObserver (Observable *const observer) const
unsigned int	countListeners () const
unsigned int	countObservers () const
unsigned int	getReceived () const
unsigned int	getSent () const
void	removeListener (Observable *const listener) const
void	removeObserver (Observable *const observerver) const
	Observable (const Observable &)
tlp::Iterator< tlp::Observable * > *	getObservables () const
bool	hasOnlookers () const
void	notifyObservers ()
void	observableDeleted ()
Observable &	operator= (const Observable &)
void	sendEvent (const Event &message)
virtual void	treatEvent (const Event &message)
Static Private Member Functions inherited from tlp::Observable
static Observable *	getObject (tlp::node n)
static const tlp::VectorGraph &	getObservableGraph ()
static void	holdObservers ()
static bool	isAlive (tlp::node n)
static unsigned int	observersHoldCounter ()
static void	unholdObservers ()

Detailed Description

The GraphNeedsSavingObserver class will observe a graph and tells if it has been modified.

See Also

Observable

• The constructor. Observe the graph given in parameter for modification
• needsSaving. Returns true is the graph has been modified
• saved. The graph has been saved, and the status of the class must be reset. needsSaving will return false if called after saved().
• savingNeeded. Signal send when the status of the graph evolves.

Definition at line 42 of file GraphNeedsSavingObserver.h.

Constructor & Destructor Documentation

tlp::GraphNeedsSavingObserver::GraphNeedsSavingObserver

(

Graph *

graph

)

GraphNeedsSavingObserver Class constructor.

Parameters

graph

the graph which needs to be observed for modifications

Member Function Documentation

bool tlp::GraphNeedsSavingObserver::needsSaving

(

)

const

needsSaving Indicates if the graph has been modified, and thus needs to be saved.

Returns

true if the graph needs to be saved, false otherwise.

void tlp::GraphNeedsSavingObserver::saved

(

)

saved If the graph has been saved, one has to call this method to reset the status of the graph (it does not need to be saved). to indicate that the graph does not need to be saved until a new modification.

void tlp::GraphNeedsSavingObserver::savingNeeded ( )

signal

savingNeeded This signal is sent when the graph needs to be saved (it has been modified).

virtual void tlp::GraphNeedsSavingObserver::treatEvents ( const std::vector< Event > &  )

protectedvirtual

treatEvents This function is called when events are sent to Observers, and Observers only.

See Also

Listener

Observer

Observable

Observable::treatEvents(const std::vector<Event>&)

Parameters

events

The events that happened since the last unHoldObservers().

Reimplemented from tlp::Observable.