From 2b1b300eaecbb865c2e4c01b48abdfddef960b6a Mon Sep 17 00:00:00 2001
From: Yorik van Havre <yorik@uncreated.net>
Date: Wed, 2 Mar 2022 19:07:44 +0100
Subject: [PATCH] Preparation for Help module

Added a preference switch to enable the use of the Help module.
Doing this before the release so users of 0.20 will be able to
use the Help module when it's ready
---
 src/Gui/MainWindow.cpp | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/src/Gui/MainWindow.cpp b/src/Gui/MainWindow.cpp
index 6343df10f1..1c87ebb617 100644
--- a/src/Gui/MainWindow.cpp
+++ b/src/Gui/MainWindow.cpp
@@ -691,14 +691,22 @@ void MainWindow::whatsThis()
 
 void MainWindow::showDocumentation(const QString& help)
 {
-    QUrl url(help);
-    if (url.scheme().isEmpty()) {
-        QString page;
-        page = QString::fromUtf8("%1.html").arg(help);
-        d->assistant->showDocumentation(page);
-    }
-    else {
-        QDesktopServices::openUrl(url);
+    // temporary - allows to enable/disable the use of the Help module
+    ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Help");
+    bool useHelpModule = hGrp->GetBool("UseHelpModule", false);
+    if (useHelpModule) {
+        Gui::Command::addModule(Gui::Command::Gui,"Help");
+        Gui::Command::doCommand(Gui::Command::Gui,"Help.show(\"%s\")", help.toStdString().c_str());
+    } else {
+        QUrl url(help);
+        if (url.scheme().isEmpty()) {
+            QString page;
+            page = QString::fromUtf8("%1.html").arg(help);
+            d->assistant->showDocumentation(page);
+        }
+        else {
+            QDesktopServices::openUrl(url);
+        }
     }
 }