QmlDesigner: Fix project file getter/setter issues

Task-number: QDS-9781
Change-Id: I2df8cca1c4e5cd10563621b849fb54b29c0d155d
Reviewed-by: Marco Bubke <marco.bubke@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmlprojectmanager/buildsystem/projectitem/converters.cpp

@@ -135,7 +135,7 @@ QString jsonToQmlProject(const QJsonObject &rootObject)
             appendBreak();
             appendString("qdsVersion", versionConfig["designStudio"].toString());
             appendString("quickVersion", versionConfig["qtQuick"].toString());
-            appendBool("qt6Project", versionConfig["qtQuick"].toString().startsWith("6."));
+            appendBool("qt6Project", versionConfig["qt"].toString() == "6");
             appendBool("qtForMCUs", rootObject["mcuConfig"].toObject().isEmpty());
             appendBreak();
             appendBool("multilanguageSupport", languageConfig["multiLanguageSupport"].toBool());
@@ -217,6 +217,7 @@ QJsonObject qmlProjectTojson(const Utils::FilePath &projectFile)
     for (const QString &propName : rootNode->propertyNames()) {
         QJsonObject *currentObj = &rootObject;
         QString objKey = propName;
+        QJsonValue value = rootNode->property(propName).value.toJsonValue();
 
         if (propName.contains("language", Qt::CaseInsensitive)) {
             currentObj = &languageObject;
@@ -240,11 +241,12 @@ QJsonObject qmlProjectTojson(const Utils::FilePath &projectFile)
             currentObj = &mcuObject;
             objKey = "mcuEnabled";
         } else if (propName.contains("qt6project", Qt::CaseInsensitive)) {
-            // we are skipping these ones in the new json format
-            continue;
+            currentObj = &versionObject;
+            objKey = "qt";
+            value = rootNode->property(propName).value.toBool() ? "6" : "5";
         }
 
-        currentObj->insert(objKey, rootNode->property(propName).value.toJsonValue());
+        currentObj->insert(objKey, value);
     }
 
     // add missing non-object props if any
@@ -252,6 +254,10 @@ QJsonObject qmlProjectTojson(const Utils::FilePath &projectFile)
         runConfigObject.insert("fileSelectors", QJsonArray{});
     }
 
+    if (!versionObject.contains("qt")) {
+        versionObject.insert("qt", "5");
+    }
+
     // convert the the object props
     for (const QmlJS::SimpleReaderNode::Ptr &childNode : rootNode->children()) {
         if (childNode->name().contains("files", Qt::CaseInsensitive)) {

src/plugins/qmlprojectmanager/buildsystem/projectitem/qmlprojectitem.cpp

@@ -131,9 +131,40 @@ QJsonObject QmlProjectItem::project() const
     return m_project;
 }
 
-bool QmlProjectItem::isQt6Project() const
+QString QmlProjectItem::versionQt() const
 {
-    return m_project["versions"].toObject()["qtQuick"].toString().startsWith("6.");
+    return m_project["versions"].toObject()["qt"].toString();
+}
+
+void QmlProjectItem::setVersionQt(const QString &version)
+{
+    QJsonObject targetObj = m_project["versions"].toObject();
+    targetObj["qt"] = version;
+    insertAndUpdateProjectFile("versions", targetObj);
+}
+
+QString QmlProjectItem::versionQtQuick() const
+{
+    return m_project["versions"].toObject()["qtQuick"].toString();
+}
+
+void QmlProjectItem::setVersionQtQuick(const QString &version)
+{
+    QJsonObject targetObj = m_project["versions"].toObject();
+    targetObj["qtQuick"] = version;
+    insertAndUpdateProjectFile("versions", targetObj);
+}
+
+QString QmlProjectItem::versionDesignStudio() const
+{
+    return m_project["versions"].toObject()["designStudio"].toString();
+}
+
+void QmlProjectItem::setVersionDesignStudio(const QString &version)
+{
+    QJsonObject targetObj = m_project["versions"].toObject();
+    targetObj["designStudio"] = version;
+    insertAndUpdateProjectFile("versions", targetObj);
 }
 
 QStringList QmlProjectItem::importPaths() const

src/plugins/qmlprojectmanager/buildsystem/projectitem/qmlprojectitem.h

@@ -29,7 +29,16 @@ public:
     explicit QmlProjectItem(const Utils::FilePath &filePath);
 
     bool isQt4McuProject() const;
-    bool isQt6Project() const;
+
+
+    QString versionQt() const;
+    void setVersionQt(const QString &version);
+
+    QString versionQtQuick() const;
+    void setVersionQtQuick(const QString &version);
+
+    QString versionDesignStudio() const;
+    void setVersionDesignStudio(const QString &version);
 
     Utils::FilePath sourceDirectory() const;
     QString targetDirectory() const;

src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.cpp

@@ -484,7 +484,7 @@ bool QmlBuildSystem::qtForMCUs() const
 
 bool QmlBuildSystem::qt6Project() const
 {
-    return m_projectItem->isQt6Project();
+    return m_projectItem->versionQt() == "6";
 }
 
 Utils::EnvironmentItems QmlBuildSystem::environment() const
@@ -547,4 +547,19 @@ Utils::FilePaths QmlBuildSystem::files() const
     return m_projectItem->files();
 }
 
+QString QmlBuildSystem::versionQt() const
+{
+    return m_projectItem->versionQt();
+}
+
+QString QmlBuildSystem::versionQtQuick() const
+{
+    return m_projectItem->versionQtQuick();
+}
+
+QString QmlBuildSystem::versionDesignStudio() const
+{
+    return m_projectItem->versionDesignStudio();
+}
+
 } // namespace QmlProjectManager

src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.h

@@ -81,6 +81,10 @@ public:
     QStringList importPaths() const;
     Utils::FilePaths files() const;
 
+    QString versionQt() const;
+    QString versionQtQuick() const;
+    QString versionDesignStudio() const;
+
     bool addFiles(const QStringList &filePaths);
     void refreshProjectFile();