.TH "kdb::Context" 3elektra "Tue Aug 19 2014" "Version 0.8.7" "Elektra" \" -*- nroff -*-
.ad l
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.SH NAME
kdb::Context \- 
.PP
Provides a context for configuration\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <contextual\&.hpp>\fP
.PP
Inherits kdb::Subject\&.
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "std::string \fBoperator[]\fP (std::string const &layer) const "
.br
.ti -1c
.RI "void \fBattachByName\fP (std::string const &key_name, Observer &observer)"
.br
.ti -1c
.RI "std::string \fBevaluate\fP (std::string const &key_name) const "
.br
.ti -1c
.RI "std::string \fBevaluate\fP (std::string const &key_name, std::function< bool(std::string const &, std::string &, bool in_group)> const &on_layer) const "
.br
.ti -1c
.RI "template<typename T , typename\&.\&.\&. Args> void \fBactivate\fP (Args &&\&.\&.\&.args)"
.br
.RI "\fIGlobally activate the layer\&. \fP"
.in -1c
.SH "Detailed Description"
.PP 
Provides a context for configuration\&. 

Is a subject for observers\&.
.PP
Holds currently active layers and allows global/scoped activation of layers\&. 
.SH "Member Function Documentation"
.PP 
.SS "template<typename T , typename\&.\&.\&. Args> void kdb::Context::activate (Args &&\&.\&.\&.args)\fC [inline]\fP"

.PP
Globally activate the layer\&. 
.PP
\fBTemplate Parameters:\fP
.RS 4
\fIT\fP the layer to activate 
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\fIArgs\fP the types for the arguments to pass to layer construction 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIargs\fP the arguments to pass to layer construction 
.RE
.PP

.SS "void kdb::Context::attachByName (std::string const &key_name, Observer &observer)\fC [inline]\fP"
Attach observer using to all events given by its specification (name)
.PP
\fBParameters:\fP
.RS 4
\fIkey_name\fP the name with placeholders to be used for attaching 
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\fIobserver\fP the observer to attach to 
.RE
.PP

.SS "std::string kdb::Context::evaluate (std::string const &key_name) const\fC [inline]\fP"
Evaluate a specification (name) and return a key name under current context
.PP
\fBParameters:\fP
.RS 4
\fIkey_name\fP the name with placeholders to be evaluated 
.RE
.PP

.SS "std::string kdb::Context::evaluate (std::string const &key_name, std::function< bool(std::string const &, std::string &, bool in_group)> const &on_layer) const\fC [inline]\fP"
Evaluate specification with this context\&.
.PP
\fBParameters:\fP
.RS 4
\fIkey_name\fP the keyname with placeholders to evaluate 
.br
\fIon_layer\fP the function to be called for every placeholder found
.RE
.PP
\fBon_layer is called for every layer in the\fP
.RS 4
specification\&. 
.RE
.PP

.SS "std::string kdb::Context::operator[] (std::string const &layer) const\fC [inline]\fP"
Lookup value for a current active layer
.PP
\fBParameters:\fP
.RS 4
\fIlayer\fP the name of the requested layer 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Elektra from the source code\&.