QmlDesigner: Delay item library update if content can't be resolved

Is some situations, such as creating a new project, the item library
model can be updated too early, before the type information is
complete. In those cases, try again after a short delay.

Change-Id: I47d4766656280db46ef7473796dda961b765c026
Fixes: QDS-2023
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

2 files changed, 13 insertions, 0 deletions

diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
index caf0663dce..3f7ca2c366 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
@@ -384,7 +384,19 @@ void ItemLibraryWidget::updateModel()
 {
     QTC_ASSERT(m_itemLibraryModel, return);
 
+    if (m_compressionTimer.isActive()) {
+        m_updateRetry = false;
+        m_compressionTimer.stop();
+    }
+
     m_itemLibraryModel->update(m_itemLibraryInfo.data(), m_model.data());
+
+    if (m_itemLibraryModel->rowCount() == 0 && !m_updateRetry) {
+        m_updateRetry = true; // Only retry once to avoid endless loops
+        m_compressionTimer.start();
+    } else {
+        m_updateRetry = false;
+    }
     updateImports();
     updateSearch();
 }
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
index 6e8fc0340a..11dea7d0c1 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
@@ -121,6 +121,7 @@ private:
     QPointer<Model> m_model;
     FilterChangeFlag m_filterFlag;
     ItemLibraryEntry m_currentitemLibraryEntry;
+    bool m_updateRetry = false;
 };
 
 }