lokdocview: ignore notifications on view shutdown

Callbacks are processed on idle on the main thread, so by the time we
parse them, possibly the widget is already gone, avoid that problem.

Change-Id: Ie8e16423d1ffe087e0dd21425026f7a5d644c27b

1 files changed, 9 insertions, 0 deletions

diff --git a/libreofficekit/source/gtk/lokdocview.cxx b/libreofficekit/source/gtk/lokdocview.cxx
index 0c9d13535d08..198dfd870472 100644
--- a/libreofficekit/source/gtk/lokdocview.cxx
+++ b/libreofficekit/source/gtk/lokdocview.cxx
@@ -2394,6 +2394,15 @@ static void lok_doc_view_finalize (GObject* object)
     LOKDocView* pDocView = LOK_DOC_VIEW (object);
     LOKDocViewPrivate& priv = getPrivate(pDocView);
 
+    // Ignore notifications sent to this view on shutdown.
+    std::unique_lock<std::mutex> aGuard(g_aLOKMutex);
+    std::stringstream ss;
+    ss << "lok::Document::setView(" << priv->m_nViewId << ")";
+    g_info("%s", ss.str().c_str());
+    priv->m_pDocument->pClass->setView(priv->m_pDocument, priv->m_nViewId);
+    priv->m_pDocument->pClass->registerCallback(priv->m_pDocument, nullptr, nullptr);
+    aGuard.unlock();
+
     if (priv->m_pDocument && priv->m_pDocument->pClass->getViews(priv->m_pDocument) > 1)
     {
         priv->m_pDocument->pClass->destroyView(priv->m_pDocument, priv->m_nViewId);