QmlDesigner: Bind meta info cache to model

A global variable is not helping for multithreading and the cache has
anyway a 1:1 relationshit to the model.

Change-Id: Ic05f32744b70ef63aa5ae7d475afc0b5b17f2f09
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/components/integration/designdocument.cpp

@@ -579,7 +579,7 @@ void DesignDocument::paste()
             }
             view.setSelectedModelNodes({pastedNode});
         });
-        NodeMetaInfo::clearCache();
+        view.model()->clearMetaInfoCache();
     }
 }
 

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

@@ -43,6 +43,7 @@ namespace QmlDesigner {
 namespace Internal {
 class ModelPrivate;
 class WriteLocker;
+class NodeMetaInfoPrivate;
 } //Internal
 
 class AnchorLine;
@@ -68,6 +69,7 @@ class QMLDESIGNERCORE_EXPORT Model : public QObject
     friend class QmlDesigner::AbstractView;
     friend class Internal::ModelPrivate;
     friend class Internal::WriteLocker;
+    friend class QmlDesigner::Internal::NodeMetaInfoPrivate;
 
     Q_OBJECT
 
@@ -118,6 +120,8 @@ public:
 
     QList<ModelNode> selectedNodes(AbstractView *view) const;
 
+    void clearMetaInfoCache();
+
 protected:
     Model();
 

src/plugins/qmldesigner/designercore/include/nodemetainfo.h

@@ -107,8 +107,6 @@ public:
 
     QString importDirectoryPath() const;
 
-    static void clearCache();
-
 private:
     QSharedPointer<Internal::NodeMetaInfoPrivate> m_privateData;
 };

src/plugins/qmldesigner/designercore/metainfo/nodemetainfo.cpp

@@ -25,6 +25,7 @@
 
 #include "nodemetainfo.h"
 #include "model.h"
+#include "model/model_p.h"
 
 #include "metainfo.h"
 #include <enumeration.h>
@@ -620,8 +621,6 @@ public:
     QSet<QByteArray> &prototypeCachePositives();
     QSet<QByteArray> &prototypeCacheNegatives();
 
-    static void clearCache();
-
 private:
     NodeMetaInfoPrivate(Model *model, TypeName type, int maj = -1, int min = -1);
 
@@ -657,13 +656,10 @@ private:
     const Document *document() const;
 
     QPointer<Model> m_model;
-    static QHash<TypeName, Pointer> m_nodeMetaInfoCache;
     const ObjectValue *m_objectValue = nullptr;
     bool m_propertiesSetup = false;
 };
 
-QHash<TypeName, NodeMetaInfoPrivate::Pointer> NodeMetaInfoPrivate::m_nodeMetaInfoCache;
-
 bool NodeMetaInfoPrivate::isFileComponent() const
 {
     return m_isFileComponent;
@@ -705,11 +701,6 @@ QSet<QByteArray> &NodeMetaInfoPrivate::prototypeCacheNegatives()
     return m_prototypeCacheNegatives;
 }
 
-void NodeMetaInfoPrivate::clearCache()
-{
-    m_nodeMetaInfoCache.clear();
-}
-
 PropertyName NodeMetaInfoPrivate::defaultPropertyName() const
 {
     if (!m_defaultPropertyName.isEmpty())
@@ -724,17 +715,12 @@ static inline TypeName stringIdentifier( const TypeName &type, int maj, int min)
 
 NodeMetaInfoPrivate::Pointer NodeMetaInfoPrivate::create(Model *model, const TypeName &type, int major, int minor)
 {
-    if (m_nodeMetaInfoCache.contains(stringIdentifier(type, major, minor))) {
-        const Pointer &info = m_nodeMetaInfoCache.value(stringIdentifier(type, major, minor));
-        if (info->model() == model)
-            return info;
-        else
-            m_nodeMetaInfoCache.clear();
-    }
+    if (model->d->m_nodeMetaInfoCache.contains(stringIdentifier(type, major, minor)))
+        return model->d->m_nodeMetaInfoCache.value(stringIdentifier(type, major, minor));
 
     Pointer newData(new NodeMetaInfoPrivate(model, type, major, minor));
     if (newData->isValid())
-        m_nodeMetaInfoCache.insert(stringIdentifier(type, major, minor), newData);
+        model->d->m_nodeMetaInfoCache.insert(stringIdentifier(type, major, minor), newData);
     return newData;
 }
 
@@ -1671,11 +1657,6 @@ bool NodeMetaInfo::isQmlItem() const
             || isSubclassOf("QtQml.QtObject");
 }
 
-void NodeMetaInfo::clearCache()
-{
-    Internal::NodeMetaInfoPrivate::clearCache();
-}
-
 bool NodeMetaInfo::isLayoutable() const
 {
     if (isSubclassOf("<cpp>.QDeclarativeBasePositioner"))

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

@@ -161,7 +161,7 @@ void ModelPrivate::notifyImportsChanged(const QList<Import> &addedImports, const
         resetModel = true;
     }
 
-    NodeMetaInfo::clearCache();
+    m_nodeMetaInfoCache.clear();
 
     if (nodeInstanceView())
         nodeInstanceView()->importsChanged(addedImports, removedImports);
@@ -2080,6 +2080,11 @@ QList<ModelNode> Model::selectedNodes(AbstractView *view) const
     return d->toModelNodeList(d->selectedNodes(), view);
 }
 
+void Model::clearMetaInfoCache()
+{
+    d->m_nodeMetaInfoCache.clear();
+}
+
 /*!
   \brief Returns the URL against which relative URLs within the model should be resolved.
   \return The base URL.

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

@@ -85,6 +85,7 @@ class ModelPrivate : public QObject {
 
     friend class QmlDesigner::Model;
     friend class QmlDesigner::Internal::WriteLocker;
+    friend class QmlDesigner::Internal::NodeMetaInfoPrivate;
 
 public:
      ModelPrivate(Model *model);
@@ -268,6 +269,7 @@ private:
     QPointer<NodeInstanceView> m_nodeInstanceView;
     QPointer<TextModifier> m_textModifier;
     QPointer<Model> m_metaInfoProxyModel;
+    QHash<TypeName, QSharedPointer<NodeMetaInfoPrivate>> m_nodeMetaInfoCache;
     bool m_writeLock;
     qint32 m_internalIdCounter;
 };

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

@@ -989,7 +989,7 @@ bool TextToModelMerger::load(const QString &data, DifferenceHandler &differenceH
     m_rewriterView->setIncompleteTypeInformation(false);
 
     // maybe the project environment (kit, ...) changed, so we need to clean old caches
-    NodeMetaInfo::clearCache();
+    m_rewriterView->model()->clearMetaInfoCache();
 
     try {
         Snapshot snapshot = m_rewriterView->textModifier()->qmljsSnapshot();