QmlDesigner: Get version from possible imports

If the version is missing in the import, then get the highest
possible version.

* Collect possible imports before the setup of imports
* Do not skip all QtQuick.* imports.

Task-number: QDS-4403
Change-Id: I676a1f698c39c28e447ab66f81a6edd32fb78651
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp

@@ -812,9 +812,11 @@ void TextToModelMerger::setupImports(const Document::Ptr &doc,
         } else {
             QString importUri = toString(import->importUri);
             if (version.isEmpty())
-                version = "2.15";
+                version = getHighestPossibleImport(importUri);
-            const Import newImport =
+            const Import newImport = Import::createLibraryImport(importUri,
-                    Import::createLibraryImport(importUri, version, as, m_rewriterView->importDirectories());
+                                                                 version,
+                                                                 as,
+                                                                 m_rewriterView->importDirectories());
 
             if (!existingImports.removeOne(newImport))
                 differenceHandler.modelMissesImport(newImport);
@@ -869,8 +871,6 @@ static bool isBlacklistImport(const ImportKey &importKey, Model *model)
             || importKey.libraryQualifiedPath() == QStringLiteral("QtBluetooth")
             || importKey.libraryQualifiedPath() ==  QStringLiteral("Enginio")
 
-            // Don't show Quick X.X imports
-            || (importKey.splitPath.count() == 1 && importPathFirst == QStringLiteral("QtQuick"))
             || filterByMetaInfo(importKey, model);
 }
 
@@ -932,8 +932,9 @@ static QList<QmlDesigner::Import> generatePossibleLibraryImports(const QHash<QSt
 
 void TextToModelMerger::setupPossibleImports(const QmlJS::Snapshot &snapshot, const QmlJS::ViewerContext &viewContext)
 {
-    QHash<QString, ImportKey> filteredPossibleImportKeys =
+    m_possibleImportKeys = snapshot.importDependencies()->libraryImports(viewContext);
-            filterPossibleImportKeys(snapshot.importDependencies()->libraryImports(viewContext), m_rewriterView->model());
+    QHash<QString, ImportKey> filteredPossibleImportKeys
+        = filterPossibleImportKeys(m_possibleImportKeys, m_rewriterView->model());
 
     const QmlJS::Imports *imports = m_scopeChain->context()->imports(m_document.data());
     if (imports)
@@ -968,8 +969,10 @@ void TextToModelMerger::setupUsedImports()
 
      for (const QmlJS::Import &import : allImports) {
          QString version = import.info.version().toString();
-         if (version.isEmpty())
+
-             version = "2.15";
+         if (!import.info.version().isValid())
+             version = getHighestPossibleImport(import.info.name());
+
          if (!import.info.name().isEmpty() && usedImportsSet.contains(import.info.name())) {
             if (import.info.type() == ImportType::Library)
                 usedImports.append(
@@ -1062,8 +1065,8 @@ bool TextToModelMerger::load(const QString &data, DifferenceHandler &differenceH
         qCInfo(rewriterBenchmark) << "linked:" << time.elapsed();
         collectLinkErrors(&errors, ctxt);
 
-        setupImports(m_document, differenceHandler);
         setupPossibleImports(snapshot, m_vContext);
+        setupImports(m_document, differenceHandler);
 
         qCInfo(rewriterBenchmark) << "imports setup:" << time.elapsed();
 
@@ -2266,3 +2269,19 @@ QString TextToModelMerger::textAt(const Document::Ptr &doc,
 {
     return doc->source().mid(from.offset, to.end() - from.begin());
 }
+
+QString TextToModelMerger::getHighestPossibleImport(const QString &importName) const
+{
+    QString version = "2.15";
+    int maj = -1;
+    const auto imports = m_possibleImportKeys.values();
+    for (const ImportKey &import : imports) {
+        if (importName == import.libraryQualifiedPath()) {
+            if (import.majorVersion > maj) {
+                version = QString("%1.%2").arg(import.majorVersion).arg(import.minorVersion);
+                maj = import.majorVersion;
+            }
+        }
+    }
+    return version;
+}

src/plugins/qmldesigner/designercore/model/texttomodelmerger.h

@@ -153,6 +153,8 @@ private:
                           const QmlJS::SourceLocation &from,
                           const QmlJS::SourceLocation &to);
 
+    QString getHighestPossibleImport(const QString &importName) const;
+
 private:
     RewriterView *m_rewriterView;
     bool m_isActive;
@@ -163,6 +165,7 @@ private:
     QSet<ModelNode> m_setupCustomParserList;
     QmlJS::ViewerContext m_vContext;
     QSet<QPair<QString, QString> > m_qrcMapping;
+    QSet<QmlJS::ImportKey> m_possibleImportKeys;
 };
 
 class DifferenceHandler