\hypertarget{classKatabatic_1_1Observable}{}\section{Observable Class Reference}
\label{classKatabatic_1_1Observable}\index{Observable@{Observable}}


\hyperlink{classKatabatic_1_1Observer}{Observer} Design Pattern, Subject part.  


\subsection*{Public Member Functions}
\begin{DoxyCompactItemize}
\item 
\hyperlink{classKatabatic_1_1Observable_a6438e92e07db169a97ed3eba36788dc4}{Observable} ()
\item 
{\footnotesize template$<$typename T $>$ }\\T $\ast$ \hyperlink{classKatabatic_1_1Observable_acc0b7276e09628f2b101ecf751aacd2a}{get\+Observer} ()
\item 
void \hyperlink{classKatabatic_1_1Observable_a783fda85eeabe9c660881f236f162767}{add\+Observer} (\hyperlink{classKatabatic_1_1BaseObserver}{Base\+Observer} $\ast$)
\item 
void \hyperlink{classKatabatic_1_1Observable_acaa5a7fc7fa631e3006a42006d753f43}{remove\+Observer} (\hyperlink{classKatabatic_1_1BaseObserver}{Base\+Observer} $\ast$)
\item 
void \hyperlink{classKatabatic_1_1Observable_a52e577fb0c4f2e3650928334fb621c2f}{notify} (unsigned int flags)
\end{DoxyCompactItemize}


\subsection{Detailed Description}
\hyperlink{classKatabatic_1_1Observer}{Observer} Design Pattern, Subject part. 

\hyperlink{classKatabatic_1_1Observable}{Observable} is the implementation of the {\itshape subject} part of the \hyperlink{classKatabatic_1_1Observer}{Observer} design pattern. For the time beeing it\textquotesingle{}s a simplificated version that allows only one \hyperlink{classKatabatic_1_1Observer}{Observer} to watch the subject.

\hyperlink{classKatabatic_1_1Observable}{Observable} is designed to be an attribute of the subject, not one of it\textquotesingle{}s base class.

This implantation is completly generic and has nothing specific to \hyperlink{namespaceKatabatic}{Katabatic}. It may be moved sometimes in Hurricane at Property level in \textbf{ Hurricane\+::\+D\+Bo}.

{\bfseries Note to Myself\+:} \hyperlink{classKatabatic_1_1Observer}{Observer} pattern is the one behind signal/slots. 

\subsection{Constructor \& Destructor Documentation}
\mbox{\Hypertarget{classKatabatic_1_1Observable_a6438e92e07db169a97ed3eba36788dc4}\label{classKatabatic_1_1Observable_a6438e92e07db169a97ed3eba36788dc4}} 
\index{Katabatic\+::\+Observable@{Katabatic\+::\+Observable}!Observable@{Observable}}
\index{Observable@{Observable}!Katabatic\+::\+Observable@{Katabatic\+::\+Observable}}
\subsubsection{\texorpdfstring{Observable()}{Observable()}}
{\footnotesize\ttfamily \hyperlink{classKatabatic_1_1Observable}{Observable} (\begin{DoxyParamCaption}{ }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}}

Default and only constructor. The copy constructor is disabled (made private and unimplemented). 

\subsection{Member Function Documentation}
\mbox{\Hypertarget{classKatabatic_1_1Observable_acc0b7276e09628f2b101ecf751aacd2a}\label{classKatabatic_1_1Observable_acc0b7276e09628f2b101ecf751aacd2a}} 
\index{Katabatic\+::\+Observable@{Katabatic\+::\+Observable}!get\+Observer@{get\+Observer}}
\index{get\+Observer@{get\+Observer}!Katabatic\+::\+Observable@{Katabatic\+::\+Observable}}
\subsubsection{\texorpdfstring{get\+Observer()}{getObserver()}}
{\footnotesize\ttfamily T $\ast$ get\+Observer (\begin{DoxyParamCaption}{ }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}}

{\bfseries Returns\+:} The (only) observer, {\ttfamily N\+U\+LL} if there is none. It is the object of which the \hyperlink{classKatabatic_1_1Observer}{Observer} is an attribute, that is, it\textquotesingle{}s {\itshape owner}, and not the \hyperlink{classKatabatic_1_1Observer}{Observer} itself which is returned. \mbox{\Hypertarget{classKatabatic_1_1Observable_a783fda85eeabe9c660881f236f162767}\label{classKatabatic_1_1Observable_a783fda85eeabe9c660881f236f162767}} 
\index{Katabatic\+::\+Observable@{Katabatic\+::\+Observable}!add\+Observer@{add\+Observer}}
\index{add\+Observer@{add\+Observer}!Katabatic\+::\+Observable@{Katabatic\+::\+Observable}}
\subsubsection{\texorpdfstring{add\+Observer()}{addObserver()}}
{\footnotesize\ttfamily void add\+Observer (\begin{DoxyParamCaption}\item[{\hyperlink{classKatabatic_1_1BaseObserver}{Base\+Observer} $\ast$}]{observer }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}}

Adds an observer. If more than one is added, throw an error. \mbox{\Hypertarget{classKatabatic_1_1Observable_acaa5a7fc7fa631e3006a42006d753f43}\label{classKatabatic_1_1Observable_acaa5a7fc7fa631e3006a42006d753f43}} 
\index{Katabatic\+::\+Observable@{Katabatic\+::\+Observable}!remove\+Observer@{remove\+Observer}}
\index{remove\+Observer@{remove\+Observer}!Katabatic\+::\+Observable@{Katabatic\+::\+Observable}}
\subsubsection{\texorpdfstring{remove\+Observer()}{removeObserver()}}
{\footnotesize\ttfamily void remove\+Observer (\begin{DoxyParamCaption}\item[{\hyperlink{classKatabatic_1_1BaseObserver}{Base\+Observer} $\ast$}]{observer }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}}

Removes an observer. If the observer do not belong to this observable, throw an exception. \mbox{\Hypertarget{classKatabatic_1_1Observable_a52e577fb0c4f2e3650928334fb621c2f}\label{classKatabatic_1_1Observable_a52e577fb0c4f2e3650928334fb621c2f}} 
\index{Katabatic\+::\+Observable@{Katabatic\+::\+Observable}!notify@{notify}}
\index{notify@{notify}!Katabatic\+::\+Observable@{Katabatic\+::\+Observable}}
\subsubsection{\texorpdfstring{notify()}{notify()}}
{\footnotesize\ttfamily void notify (\begin{DoxyParamCaption}\item[{unsigned int}]{flags }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}}

Used by the subject to signal a change in it\textquotesingle{}s state to the observers. The {\ttfamily flags} parameter can be used to indicates what kind of change is occuring. Values for {\ttfamily flags} are defined between the subject and the observers. 

References Base\+Observer\+::notify().



Referenced by Auto\+Segment\+::\+\_\+invalidate(), Auto\+Segment\+::\+\_\+post\+Create(), Auto\+Segment\+::\+\_\+pre\+Destroy(), and Auto\+Segment\+::revalidate().



The documentation for this class was generated from the following files\+:\begin{DoxyCompactItemize}
\item 
Observer.\+h\item 
Observer.\+dox\end{DoxyCompactItemize}