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<h1>ObserverWrap.cxx</h1><a href="ObserverWrap_8cxx.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00012"></a>00012 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="comment">// for old python</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include "config.h"</span>
<a name="l00015"></a>00015 <span class="preprocessor">#endif</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span>
<a name="l00017"></a>00017 <span class="comment">// include first to avoid _POSIX_C_SOURCE warning.</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <boost/python.hpp></span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="ObserverWrap_8h.html" title="hippodraw::ObserverWrap class interface.">ObserverWrap.h</a>"</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="Observable_8h.html" title="Observable class interface.">pattern/Observable.h</a>"</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <iostream></span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keyword">using</span> std::string;
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">using namespace </span>boost::python;
<a name="l00029"></a>00029
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">namespace </span>hippodraw {
<a name="l00032"></a>00032 <span class="keyword">namespace </span>Python {
<a name="l00033"></a>00033 <span class="keywordtype">void</span>
<a name="l00034"></a><a class="code" href="namespacehippodraw_1_1Python.html#a90877c48f0adc0869f54f44bfeb7785e">00034</a> <a class="code" href="namespacehippodraw_1_1Python.html#a90877c48f0adc0869f54f44bfeb7785e" title="Exports the Observer class to Python.">export_Observer</a> ()
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 class_ < <a class="code" href="classhippodraw_1_1ObserverWrap.html" title="A wrapper class for Observer to allow its pure virtual function to be implemented...">ObserverWrap</a>,
<a name="l00037"></a>00037 std::auto_ptr<ObserverWrap>,
<a name="l00038"></a>00038 boost::noncopyable >
<a name="l00039"></a>00039 ( <span class="stringliteral">"Observer"</span>,
<a name="l00040"></a>00040 <span class="stringliteral">"The base class for classes that can be targets of Observable\n"</span>
<a name="l00041"></a>00041 <span class="stringliteral">"update messages."</span>,
<a name="l00042"></a>00042 no_init )
<a name="l00043"></a>00043 ;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 class_ < Observable >
<a name="l00046"></a>00046 ( <span class="stringliteral">"Observable"</span>,
<a name="l00047"></a>00047 <span class="stringliteral">"The base class for classes that can be target of an Observer\n"</span>
<a name="l00048"></a>00048 <span class="stringliteral">"object."</span>,
<a name="l00049"></a>00049 init <> () )
<a name="l00050"></a>00050 ;
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052 } <span class="comment">// namespace Python</span>
<a name="l00053"></a>00053 } <span class="comment">// namespace hippodraw</span>
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keyword">using namespace </span>hippodraw;
<a name="l00056"></a>00056
<a name="l00059"></a>00059 ObserverWrap::
<a name="l00060"></a><a class="code" href="classhippodraw_1_1ObserverWrap.html#a90d446da2e16fc7a7b639d3db6de242c">00060</a> ObserverWrap ( PyObject * <span class="keyword">self</span> )
<a name="l00061"></a>00061 : hippodraw::<a class="code" href="classhippodraw_1_1Observer.html" title="Part of an implementation of the Observable Observer pattern based on the example...">Observer</a> (),
<a name="l00062"></a>00062 m_self ( self )
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <a class="code" href="classhippodraw_1_1ObserverWrap.html#a98975d353df86cc5c0cae9c13d3e7c1c">ObserverWrap::</a>
<a name="l00067"></a><a class="code" href="classhippodraw_1_1ObserverWrap.html#a98975d353df86cc5c0cae9c13d3e7c1c">00067</a> <a class="code" href="classhippodraw_1_1ObserverWrap.html#a98975d353df86cc5c0cae9c13d3e7c1c">ObserverWrap</a> ( )
<a name="l00068"></a>00068 : hippodraw::<a class="code" href="classhippodraw_1_1Observer.html" title="Part of an implementation of the Observable Observer pattern based on the example...">Observer</a> (),
<a name="l00069"></a>00069 m_self ( 0 )
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 <a class="code" href="classhippodraw_1_1ObserverWrap.html#a98975d353df86cc5c0cae9c13d3e7c1c">ObserverWrap::</a>
<a name="l00073"></a><a class="code" href="classhippodraw_1_1ObserverWrap.html#a3b10e01e83ba9d53db29327912bb6e40">00073</a> <a class="code" href="classhippodraw_1_1ObserverWrap.html#a98975d353df86cc5c0cae9c13d3e7c1c">ObserverWrap</a> ( <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Observer.html" title="Part of an implementation of the Observable Observer pattern based on the example...">Observer</a> & ow )
<a name="l00074"></a>00074 : hippodraw::<a class="code" href="classhippodraw_1_1Observer.html" title="Part of an implementation of the Observable Observer pattern based on the example...">Observer</a> ( ow ),
<a name="l00075"></a>00075 m_self ( 0 )
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00080"></a>00080 <span class="keywordtype">object</span>
<a name="l00081"></a>00081 <a class="code" href="classhippodraw_1_1ObserverWrap.html#a6890ec978e2c0d41a8b9e205a5798195" title="Find the Python object that owns this object.">ObserverWrap::</a>
<a name="l00082"></a><a class="code" href="classhippodraw_1_1ObserverWrap.html#a6890ec978e2c0d41a8b9e205a5798195">00082</a> <a class="code" href="classhippodraw_1_1ObserverWrap.html#a6890ec978e2c0d41a8b9e205a5798195" title="Find the Python object that owns this object.">get_owner</a>(<a class="code" href="namespacehippodraw_1_1Axes.html#a1d1cfd8ffb84e947f82999c682b666a7a21f40778b7db9343a6ca75ec2c41ccce" title="title">T</a>* ) const <span class="comment">// me</span>
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="comment">// Use secret interface to get the Python object</span>
<a name="l00085"></a>00085 <span class="comment">// that owns *this. I guess I will have to make that</span>
<a name="l00086"></a>00086 <span class="comment">// interface public. -- Dave Abrahams</span>
<a name="l00087"></a>00087 <span class="keywordflow">return</span>
<a name="l00088"></a>00088 object ( handle<> ( borrowed ( detail::wrapper_base_::get_owner(*<span class="keyword">this</span>))));
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00093"></a>00093 <span class="keywordtype">void</span>
<a name="l00094"></a>00094 <a class="code" href="classhippodraw_1_1ObserverWrap.html#ae6b85d8f95c1889865463b18e33d08a5">ObserverWrap::</a>
<a name="l00095"></a><a class="code" href="classhippodraw_1_1ObserverWrap.html#ae6b85d8f95c1889865463b18e33d08a5">00095</a> <a class="code" href="classhippodraw_1_1ObserverWrap.html#ae6b85d8f95c1889865463b18e33d08a5">update</a> ( <span class="keyword">const</span> <a class="code" href="classhippodraw_1_1Observable.html" title="Part of an implementation of the Observable-Observer pattern based on the example...">Observable</a> * obs )
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="preprocessor">#ifndef HAVE_OLD_PYTHON</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span> PyGILState_STATE state = PyGILState_Ensure ();
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">try</span> {
<a name="l00101"></a>00101 <span class="keywordtype">object</span> <span class="keyword">self</span> = <a class="code" href="classhippodraw_1_1ObserverWrap.html#a6890ec978e2c0d41a8b9e205a5798195" title="Find the Python object that owns this object.">get_owner</a> ( <span class="keyword">this</span> );
<a name="l00102"></a>00102 call_method < void, const Observable * > ( <span class="keyword">self</span>.ptr(), <span class="stringliteral">"update"</span>, obs );
<a name="l00103"></a>00103 } <span class="keywordflow">catch</span> ( error_already_set & ) {
<a name="l00104"></a>00104 std::cout << <span class="stringliteral">"ObserverWrap::update: caught error_already_set"</span>
<a name="l00105"></a>00105 << std::endl;
<a name="l00106"></a>00106 PyErr_Print();
<a name="l00107"></a>00107 handle_exception();
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 PyGILState_Release ( state );
<a name="l00111"></a>00111 <span class="preprocessor">#endif</span>
<a name="l00112"></a>00112 <span class="preprocessor"></span>}
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