\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'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's base class.

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

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

\subsection{Constructor \& Destructor Documentation}
\hypertarget{classKatabatic_1_1Observable_a6438e92e07db169a97ed3eba36788dc4}{\index{Katabatic\-::\-Observable@{Katabatic\-::\-Observable}!Observable@{Observable}}
\index{Observable@{Observable}!Katabatic::Observable@{Katabatic\-::\-Observable}}
\subsubsection[{Observable}]{\setlength{\rightskip}{0pt plus 5cm}{\bf Observable} (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)\hspace{0.3cm}{\ttfamily [inline]}}}\label{classKatabatic_1_1Observable_a6438e92e07db169a97ed3eba36788dc4}
Default and only constructor. The copy constructor is disabled (made private and unimplemented). 

\subsection{Member Function Documentation}
\hypertarget{classKatabatic_1_1Observable_acc0b7276e09628f2b101ecf751aacd2a}{\index{Katabatic\-::\-Observable@{Katabatic\-::\-Observable}!get\-Observer@{get\-Observer}}
\index{get\-Observer@{get\-Observer}!Katabatic::Observable@{Katabatic\-::\-Observable}}
\subsubsection[{get\-Observer}]{\setlength{\rightskip}{0pt plus 5cm}T $\ast$ get\-Observer (
\begin{DoxyParamCaption}
{}
\end{DoxyParamCaption}
)\hspace{0.3cm}{\ttfamily [inline]}}}\label{classKatabatic_1_1Observable_acc0b7276e09628f2b101ecf751aacd2a}
{\bfseries Returns\-:} The (only) observer, {\ttfamily N\-U\-L\-L} if there is none. It is the object of which the \hyperlink{classKatabatic_1_1Observer}{Observer} is an attribute, that is, it's {\itshape owner}, and not the \hyperlink{classKatabatic_1_1Observer}{Observer} itself which is returned. \hypertarget{classKatabatic_1_1Observable_a783fda85eeabe9c660881f236f162767}{\index{Katabatic\-::\-Observable@{Katabatic\-::\-Observable}!add\-Observer@{add\-Observer}}
\index{add\-Observer@{add\-Observer}!Katabatic::Observable@{Katabatic\-::\-Observable}}
\subsubsection[{add\-Observer}]{\setlength{\rightskip}{0pt plus 5cm}void add\-Observer (
\begin{DoxyParamCaption}
\item[{{\bf Base\-Observer} $\ast$}]{observer}
\end{DoxyParamCaption}
)\hspace{0.3cm}{\ttfamily [inline]}}}\label{classKatabatic_1_1Observable_a783fda85eeabe9c660881f236f162767}
Adds an observer. If more than one is added, throw an error. \hypertarget{classKatabatic_1_1Observable_acaa5a7fc7fa631e3006a42006d753f43}{\index{Katabatic\-::\-Observable@{Katabatic\-::\-Observable}!remove\-Observer@{remove\-Observer}}
\index{remove\-Observer@{remove\-Observer}!Katabatic::Observable@{Katabatic\-::\-Observable}}
\subsubsection[{remove\-Observer}]{\setlength{\rightskip}{0pt plus 5cm}void remove\-Observer (
\begin{DoxyParamCaption}
\item[{{\bf Base\-Observer} $\ast$}]{observer}
\end{DoxyParamCaption}
)\hspace{0.3cm}{\ttfamily [inline]}}}\label{classKatabatic_1_1Observable_acaa5a7fc7fa631e3006a42006d753f43}
Removes an observer. If the observer do not belong to this observable, throw an exception. \hypertarget{classKatabatic_1_1Observable_a52e577fb0c4f2e3650928334fb621c2f}{\index{Katabatic\-::\-Observable@{Katabatic\-::\-Observable}!notify@{notify}}
\index{notify@{notify}!Katabatic::Observable@{Katabatic\-::\-Observable}}
\subsubsection[{notify}]{\setlength{\rightskip}{0pt plus 5cm}void notify (
\begin{DoxyParamCaption}
\item[{unsigned int}]{flags}
\end{DoxyParamCaption}
)\hspace{0.3cm}{\ttfamily [inline]}}}\label{classKatabatic_1_1Observable_a52e577fb0c4f2e3650928334fb621c2f}
Used by the subject to signal a change in it'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}