Improved context sensitive help

- create utilty function CGuiApplication::triggerShowHelp
- this function also uses "QWhatsThis::leaveWhatsThisMode" which solves the problem that the help was not properly called a 2nd time
- adjusted using classes

src/blackgui/components/configurationwizard.cpp

@@ -75,14 +75,8 @@ namespace BlackGui
 
         bool CConfigurationWizard::event(QEvent *event)
         {
-            if (event->type() != QEvent::EnterWhatsThisMode) { return QDialog::event(event); }
-            const QPointer<CConfigurationWizard> myself(this);
-            QTimer::singleShot(0, this, [ = ]
-            {
-                if (myself.isNull() || !sGui || sGui->isShuttingDown()) { return; }
-                sGui->showHelp(this);
-            });
-            return true;
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
         }
 
         void CConfigurationWizard::wizardCurrentIdChanged(int id)

src/blackgui/components/copyconfigurationdialog.cpp

@@ -9,6 +9,7 @@
 
 #include "copyconfigurationdialog.h"
 #include "ui_copyconfigurationdialog.h"
+#include "blackgui/guiapplication.h"
 
 namespace BlackGui
 {
@@ -49,5 +50,11 @@ namespace BlackGui
         {
             ui->comp_CopyConfiguration->setWithBootstrapFile(withBootstrapFile);
         }
+
+        bool CCopyConfigurationDialog::event(QEvent *event)
+        {
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
+        }
     } // ns
 } // ns

src/blackgui/components/copyconfigurationdialog.h

@@ -50,6 +50,10 @@ namespace BlackGui
             //! \copydoc CCopyConfigurationComponent::setWithBootstrapFile
             void setWithBootstrapFile(bool withBootstrapFile);
 
+        protected:
+            //! \copydoc QObject::event
+            virtual bool event(QEvent *event) override;
+
         private:
             QScopedPointer<Ui::CCopyConfigurationDialog> ui;
         };

src/blackgui/components/dbownmodelsetformdialog.cpp

@@ -11,6 +11,7 @@
 #include "blackgui/components/dbmappingcomponent.h"
 #include "blackgui/components/dbownmodelsetformdialog.h"
 #include "blackgui/editors/ownmodelsetform.h"
+#include "blackgui/guiapplication.h"
 #include "blackmisc/logcategory.h"
 #include "blackmisc/logcategorylist.h"
 #include "blackmisc/simulation/distributorlist.h"
@@ -71,6 +72,12 @@ namespace BlackGui
             return QDialog::exec();
         }
 
+        bool CDbOwnModelSetFormDialog::event(QEvent *event)
+        {
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
+        }
+
         void CDbOwnModelSetFormDialog::buttonClicked()
         {
             const QObject *sender = QObject::sender();

src/blackgui/components/dbownmodelsetformdialog.h

@@ -62,6 +62,10 @@ namespace BlackGui
             //! Exec and display simulator
             virtual int exec() override;
 
+        protected:
+            //! \copydoc QObject::event
+            virtual bool event(QEvent *event) override;
+
         private:
             QScopedPointer<Ui::CDbOwnModelSetFormDialog> ui;
             BlackMisc::Simulation::CAircraftModelList m_modelSet;

src/blackgui/components/interpolationlogdisplaydialog.cpp

@@ -9,6 +9,7 @@
 
 #include "interpolationlogdisplaydialog.h"
 #include "ui_interpolationlogdisplaydialog.h"
+#include "blackgui/guiapplication.h"
 #include "blackcore/simulator.h"
 
 using namespace BlackCore;
@@ -22,7 +23,6 @@ namespace BlackGui
             ui(new Ui::CInterpolationLogDisplayDialog)
         {
             ui->setupUi(this);
-            this->setWindowFlags(this->windowFlags() & ~Qt::WindowContextHelpButtonHint);
             this->setSimulator(simulator);
 
             if (airspaceMonitor)
@@ -50,5 +50,11 @@ namespace BlackGui
         {
             ui->comp_InterpolationLogDisplay->setAirspaceMonitor(airspaceMonitor);
         }
+
+        bool CInterpolationLogDisplayDialog::event(QEvent *event)
+        {
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
+        }
     } // ns
 } // ns

src/blackgui/components/interpolationlogdisplaydialog.h

@@ -48,6 +48,10 @@ namespace BlackGui
             //! Set airspace monitor
             void setAirspaceMonitor(BlackCore::CAirspaceMonitor *airspaceMonitor);
 
+        protected:
+            //! \copydoc QObject::event
+            virtual bool event(QEvent *event) override;
+
         private:
             QScopedPointer<Ui::CInterpolationLogDisplayDialog> ui;
         };

src/blackgui/components/updateinfodialog.cpp

@@ -56,9 +56,8 @@ namespace BlackGui
 
         bool CUpdateInfoDialog::event(QEvent *event)
         {
-            if (event->type() != QEvent::EnterWhatsThisMode) { return QDialog::event(event); }
-            QTimer::singleShot(0, this, &CUpdateInfoDialog::requestHelp);
-            return true;
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
         }
 
         void CUpdateInfoDialog::onDontShowAgain(bool dontShowAgain)
@@ -71,10 +70,5 @@ namespace BlackGui
             const bool nv = ui->comp_UpdateInfo->isNewPilotClientVersionAvailable();
             ui->bb_UpdateInfolDialog->button(QDialogButtonBox::Ok)->setVisible(nv);
         }
-
-        void CUpdateInfoDialog::requestHelp()
-        {
-            if (sGui) { sGui->showHelp(this); }
-        }
     } // ns
 } // ns

src/blackgui/components/updateinfodialog.h

@@ -41,6 +41,7 @@ namespace BlackGui
             //! \copydoc QDialog::exec
             virtual int exec() override;
 
+        protected:
             //! \copydoc QObject::event
             virtual bool event(QEvent *event) override;
 
@@ -53,9 +54,6 @@ namespace BlackGui
 
             //! Selection in distribution component changed
             void selectionChanged();
-
-            //! Request context help
-            void requestHelp();
         };
     } // ns
 } // ns

src/blackgui/guiapplication.cpp

@@ -55,6 +55,7 @@
 #include <QWidget>
 #include <QMainWindow>
 #include <QtGlobal>
+#include <QWhatsThis>
 
 using namespace BlackConfig;
 using namespace BlackMisc;
@@ -721,6 +722,7 @@ namespace BlackGui
 
     void CGuiApplication::showHelp(const QString &context) const
     {
+        if (this->isShuttingDown()) { return; }
         const CGlobalSetup gs = this->getGlobalSetup();
         const CUrl helpPage = gs.getHelpPageUrl(context);
         if (helpPage.isEmpty())
@@ -733,10 +735,26 @@ namespace BlackGui
 
     void CGuiApplication::showHelp(const QObject *qObject) const
     {
+        if (this->isShuttingDown()) { return; }
         if (!qObject || qObject->objectName().isEmpty()) { return this->showHelp(); }
         return this->showHelp(qObject->objectName());
     }
 
+    bool CGuiApplication::triggerShowHelp(const QWidget *widget, QEvent *event)
+    {
+        if (!widget) { return false; }
+        if (!event) { return false; }
+        if (event->type() != QEvent::EnterWhatsThisMode) { return false; }
+        QWhatsThis::leaveWhatsThisMode();
+        const QPointer<const QWidget> wp(widget);
+        QTimer::singleShot(0, sGui, [ = ]
+        {
+            if (wp.isNull() || !sGui || sGui->isShuttingDown()) { return; }
+            sGui->showHelp(widget);
+        });
+        return true;
+    }
+
     const CStyleSheetUtility &CGuiApplication::getStyleSheetUtility() const
     {
         return m_styleSheetUtility;

src/blackgui/guiapplication.h

@@ -26,6 +26,7 @@
 #include <QCommandLineOption>
 #include <QDialog>
 #include <QObject>
+#include <QEvent>
 #include <QPixmap>
 #include <QScopedPointer>
 #include <QString>
@@ -159,6 +160,9 @@ namespace BlackGui
         //! Show help page (online help), use QObject::objectName as 2nd level context
         void showHelp(const QObject *qObject) const;
 
+        //! Static version used with dialogs
+        static bool triggerShowHelp(const QWidget *widget, QEvent *event);
+
         //! Style sheet handling
         const CStyleSheetUtility &getStyleSheetUtility() const;