ElementAccess Class Reference

#include "stage/model/element-access.hpp"

Description

Interface: access UI elements by navigating the UI topology.

See also

stage::interact::Navigator

ElementAccess_test

Definition at line 77 of file element-access.hpp.

Public Member Functions
virtual	~ElementAccess ()
	this is an interface
template<class TAR >
lib::Result< TAR & >	access (UICoord const &destination)
	Navigate the UI topology to access the designated component. More...
UICoord	locate_or_create (UICoord const &destination, size_t limitCreation=LUMIERA_MAX_ORDINAL_NUMBER)
	Navigate to the designated component, possibly create the element and parents. More...

Classes
struct	TypeConverter

Protected Types
using	RawResult = lib::Variant< Types< model::Tangible *, Gtk::Widget * > >

Protected Member Functions
virtual RawResult	performAccessTo (UICoord::Builder &, size_t limitCreation)=0

Additional Inherited Members
Private Member Functions inherited from NonCopyable
	NonCopyable (NonCopyable const &)=delete
NonCopyable &	operator= (NonCopyable const &)=delete

Member Function Documentation

access()

lib::Result< TAR & > access ( UICoord const &  destination )

inline

Navigate the UI topology to access the designated component.

Template Parameters

TAR	type of result element expected at the designated location

Returns

suitably converted direct (language) reference to the desired element wrapped as result proxy

Note

when access was not possible because either the element does not exist, or is not convertible to the desired target type, the result proxy is empty and convertible to bool(false)

Definition at line 163 of file element-access.hpp.

locate_or_create()

UICoord locate_or_create ( UICoord const &  destination, size_t  limitCreation = LUMIERA_MAX_ORDINAL_NUMBER  )

inline

Navigate to the designated component, possibly create the element and parents.

Parameters

limitCreation

limit on the number of similar UI elements that can be created within a scope. A value of zero prohibits creating of new elements.

Returns

location of the actual element to use, as UI-coordinates.

Note

when access was not possible because the element could not been created, the indicated location returned is an empty coordinate spec.

Definition at line 181 of file element-access.hpp.

performAccessTo()

virtual RawResult performAccessTo ( UICoord::Builder &  , size_t  limitCreation  )

protectedpure virtual

drill down according to coordinates, maybe create element

Implemented in TestElementAccess, and ElemAccessDir.

Inheritance diagram for ElementAccess:

Collaboration diagram for ElementAccess:

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

• element-access.hpp