WLink< TAR > Class Template Reference

#include "stage/model/w-link.hpp"

Description

template<class TAR>
class stage::model::WLink< TAR >

Managed link to a sigc::trackable UI widget, without taking ownership.

Automatically installs a callback to switch this link into detached state when the target (widget) is destroyed.

Template Parameters

TAR	the actual target widget type, which can be forward declared, until the point where the widget is actually constructed or attached. This target type must derive from sigc::trackable

Warning

not threadsafe

Note

only EX_SANE, since attaching, detaching and swapping might throw.

Definition at line 88 of file w-link.hpp.

Public Member Functions
	WLink (TAR &targetWidget)
	WLink (WLink const &r)
	WLink (WLink &&rr)
void	clear ()
	detach and deactivate this link More...
void	connect (TAR &otherTarget)
	(re)connect this smart link to the given target. More...
bool	isActive () const
bool	isValid () const
	operator bool () const
TAR &	operator* () const
TAR *	operator-> () const
WLink &	operator= (WLink other)

Friends
void	swap (WLink &l, WLink &r)
	swap the pointees, including callback registration. More...

Private Member Functions
void	__ensureAlive () const
TAR *	attachTo (TAR &target)

Private Attributes
TAR *	widget_

Member Function Documentation

operator=()

WLink& operator= ( WLink< TAR >  other )

inline

Parameters

other

Warning

only EX_SANE

Definition at line 122 of file w-link.hpp.

clear()

void clear ( )

inline

detach and deactivate this link

Note

EX_STRONG (but only under the assumption that also sigc::trackable::remove_destroy_notify_cllback is EX_STRONG)

Definition at line 179 of file w-link.hpp.

Referenced by WLink< TimelineWidget >::connect().

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connect()

void connect ( TAR &  otherTarget )

inline

(re)connect this smart link to the given target.

Any previously existing link is detached beforehand

Note

EX_SANE only (assuming sigc::trackable is sane) Might leave this WLink in disconnected state when throwing

Exceptions

error::External

when registration with sigc::trackable fails

Definition at line 193 of file w-link.hpp.

attachTo()

TAR* attachTo ( TAR &  target )

inlineprivate

installs the necessary callback to detach this link in case the target is destroyed

Note

EX_STRONG

Definition at line 214 of file w-link.hpp.

Referenced by WLink< TimelineWidget >::connect().

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Friends And Related Function Documentation

swap

void swap ( WLink< TAR > &  l, WLink< TAR > &  r  )

friend

swap the pointees, including callback registration.

Warning

only EX_SANE. Might leave the following intermediary states

• only r was detached
• both r and l are detached
• both detached, but only l attached to the former target of r, while the former target of l is now completely detached.

Definition at line 137 of file w-link.hpp.

Referenced by WLink< TimelineWidget >::operator=().

Inheritance diagram for WLink< TAR >:

Collaboration diagram for WLink< TAR >:

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

• w-link.hpp