WelcomePage: fixes QTC_ASSERT

We have to wait for the QtVersionManager until all Qt versions
are loaded.

Change-Id: Ia6f823660d0252fb8e8ee1b8cfaec32e26ebc0bd
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

1 files changed, 16 insertions, 3 deletions

diff --git a/src/plugins/qtsupport/exampleslistmodel.cpp b/src/plugins/qtsupport/exampleslistmodel.cpp
index 6eda6cab25..197babdbcf 100644
--- a/src/plugins/qtsupport/exampleslistmodel.cpp
+++ b/src/plugins/qtsupport/exampleslistmodel.cpp
@@ -110,6 +110,11 @@ public:
 
     void setupQtVersions()
     {
+        if (!QtVersionManager::isLoaded()) {
+            connect(QtVersionManager::instance(), SIGNAL(qtVersionsLoaded()), this, SLOT(qtVersionManagerLoaded()));
+            return;
+        }
+
         beginResetModel();
         clear();
 
@@ -173,6 +178,11 @@ public slots:
         QVariant variant = data(modelIndex, Qt::UserRole + 2);
         return variant;
     }
+    void qtVersionManagerLoaded()
+    {
+        disconnect(QtVersionManager::instance(), SIGNAL(qtVersionsLoaded()), this, SLOT(qtVersionManagerLoaded()));
+        setupQtVersions();
+    }
 };
 
 ExamplesListModel::ExamplesListModel(QObject *parent) :
@@ -700,9 +710,11 @@ void ExamplesListModel::ensureInitialized() const
 
 void ExamplesListModel::filterForQtById(int id)
 {
-    m_uniqueQtId = id;
-    setUniqueQtVersionIdSetting(id);
-    updateExamples();
+    if (QtVersionManager::isLoaded()) {
+        m_uniqueQtId = id;
+        setUniqueQtVersionIdSetting(id);
+        updateExamples();
+    }
 }
 
 ExamplesListModelFilter::ExamplesListModelFilter(ExamplesListModel *sourceModel, QObject *parent) :
@@ -716,6 +728,7 @@ ExamplesListModelFilter::ExamplesListModelFilter(ExamplesListModel *sourceModel,
     connect(this, SIGNAL(showTutorialsOnlyChanged()), SLOT(updateFilter()));
     connect(sourceModel, SIGNAL(qtVersionsChanged()), SLOT(handleQtVersionsChanged()));
     setSourceModel(m_sourceModel);
+    m_qtVersionModel->setupQtVersions();
 }
 
 void ExamplesListModelFilter::updateFilter()