qmljs: fix race condition in defaultVContext

defaultVContext did call defaultProjectInfo which could
be called only from the ui thread (as it did check the current
project)
Now update the defaultProjectInfo via signals, and lock on access
making defaultProjectInfo threadsafe.

Task-number: QTCREATORBUG-12556
Change-Id: Ibffeb59bbcef7120f08766160bb1e2ddc9af2922
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/qmljstools/qmljsmodelmanager.h b/src/plugins/qmljstools/qmljsmodelmanager.h
index 2b8233a66f..efc8de8bb5 100644
--- a/src/plugins/qmljstools/qmljsmodelmanager.h
+++ b/src/plugins/qmljstools/qmljsmodelmanager.h
@@ -70,9 +70,10 @@ public:
 protected:
     QHash<QString, QmlJS::Language::Enum> languageForSuffix() const QTC_OVERRIDE;
     void writeMessageInternal(const QString &msg) const QTC_OVERRIDE;
-    ModelManagerInterface::ProjectInfo defaultProjectInfo() const QTC_OVERRIDE;
     WorkingCopy workingCopyInternal() const QTC_OVERRIDE;
     void addTaskInternal(QFuture<void> result, const QString &msg, const char *taskId) const QTC_OVERRIDE;
+private slots:
+    void updateDefaultProjectInfo();
 private:
     void loadDefaultQmlTypeDescriptions();
     static bool matchesMimeType(const Core::MimeType &fileMimeType, const Core::MimeType &knownMimeType);