Fix the signal slot connection

src/panelplugins/documentationpanel/documentationpanelplugin.cpp

@@ -41,6 +41,7 @@ QWidget* DocumentationPanelPlugin::widget()
     {
         // find the default backend and then load it, currently hardcoding the values
         m_widget = new DocumentationPanelWidget(QLatin1String("Maxima"), QLatin1String("maximabackend"), parentWidget());
+        connect(m_cantorShell, SIGNAL(requestDocumentation(QString)), m_widget, SLOT(contextSensitiveHelp(QString)));
     }
 
     return m_widget;
@@ -63,7 +64,7 @@ QString DocumentationPanelPlugin::backendName() const
 
 void DocumentationPanelPlugin::connectToShell(QObject* cantorShell)
 {
-    connect(cantorShell, SIGNAL(requestDocumentation(QString)), m_widget, SLOT(contextSensitiveHelp(QString)));
+    m_cantorShell = cantorShell;
     connect(cantorShell, SIGNAL(requestDocumentation(QString)), this, SIGNAL(visibilityRequested()));
 }
 

src/panelplugins/documentationpanel/documentationpanelplugin.h

@@ -53,6 +53,8 @@ class DocumentationPanelPlugin : public Cantor::PanelPlugin
     QPointer<DocumentationPanelWidget> m_widget;
     QString m_backendName;
     QString m_backendIcon;
+
+    QObject* m_cantorShell = nullptr;
 };
 
 #endif /* _DOCUMENTATIONPANELPLUGIN_H */

src/panelplugins/documentationpanel/documentationpanelwidget.cpp

@@ -327,6 +327,7 @@ void DocumentationPanelWidget::updateBackend(const QString& backendName, const Q
     // update the QComboBox to display all the docs for newly changed backend worksheet
     m_documentationSelector->addItem(QIcon::fromTheme(m_icon), m_backend);
 
+    // Since new documentation files have been loaded, now add the widgets again and refresh the display
     m_displayArea->addWidget(m_engine->contentWidget());
     m_displayArea->addWidget(m_textBrowser);
     m_displayArea->addWidget(m_index);
@@ -382,6 +383,7 @@ void DocumentationPanelWidget::returnPressed()
 
 void DocumentationPanelWidget::contextSensitiveHelp(const QString& keyword)
 {
+    qDebug() << keyword;
     // First make sure we have display browser as the current widget on the QStackedWidget
     emit activateBrowser();