Re #9495 Link help button to PeakFitting help page

Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Muon/ALCPeakFittingView.h

@@ -59,6 +59,7 @@ namespace CustomInterfaces
     void setParameter(const QString& funcIndex, const QString& paramName, double value);
     void setPeakPickerEnabled(bool enabled);
     void setPeakPicker(const IPeakFunction_const_sptr& peak);
+    void help();
 
     // -- End of IALCPeakFitting interface ---------------------------------------------------------
 

Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Muon/IALCPeakFittingView.h

@@ -86,6 +86,9 @@ namespace CustomInterfaces
     /// @param peak :: A new peak to represent
     virtual void setPeakPicker(const IPeakFunction_const_sptr& peak) = 0;
 
+    /// Opens the Mantid Wiki web page
+    virtual void help() = 0;
+
   signals:
     /// Request to perform peak fitting
     void fitRequested();

Code/Mantid/MantidQt/CustomInterfaces/src/Muon/ALCPeakFittingView.cpp

 #include "MantidQtCustomInterfaces/Muon/ALCPeakFittingView.h"
 
+#include <QDesktopServices>
+#include <QUrl>
 #include <qwt_symbol.h>
 
 namespace MantidQt
@@ -54,6 +56,8 @@ void ALCPeakFittingView::initialize()
   connect(m_ui.peaks, SIGNAL(currentFunctionChanged()), SIGNAL(currentFunctionChanged()));
   connect(m_ui.peaks, SIGNAL(parameterChanged(QString,QString)),
           SIGNAL(parameterChanged(QString,QString)));
+
+  connect(m_ui.help, SIGNAL(clicked()), this, SLOT(help()));
 }
 
 void ALCPeakFittingView::setDataCurve(const QwtData& data)
@@ -100,6 +104,12 @@ void ALCPeakFittingView::setPeakPicker(const IPeakFunction_const_sptr& peak)
   m_ui.plot->replot();
 }
 
+void ALCPeakFittingView::help()
+{
+  QDesktopServices::openUrl(QUrl(QString("http://www.mantidproject.org/") +
+    "Muon_ALC:_Peak_Fitting"));
+}
+
 } // namespace CustomInterfaces
 } // namespace Mantid