adapters: handle injecting lrcinstance with zero accounts

Change-Id: I1ec652c60620cf4e7e1caad7fd00ddf1aa40d64d

src/conversationlistmodel.cpp

@@ -24,6 +24,9 @@
 ConversationListModel::ConversationListModel(LRCInstance* instance, QObject* parent)
     : ConversationListModelBase(instance, parent)
 {
+    if (!model_)
+        return;
+
     connect(
         model_,
         &ConversationModel::beginInsertRows,

src/conversationsadapter.cpp

@@ -99,8 +99,6 @@ ConversationsAdapter::ConversationsAdapter(SystemTray* systemTray,
         Q_EMIT convSrcModel_->dataChanged(index, index);
     });
 
-    updateConversationFilterData();
-
 #ifdef Q_OS_LINUX
     // notification responses
     connect(systemTray_,
@@ -188,15 +186,8 @@ ConversationsAdapter::onCurrentAccountIdChanged()
 {
     lrcInstance_->deselectConversation();
 
-    convSrcModel_.reset(new ConversationListModel(lrcInstance_));
-    convModel_->bindSourceModel(convSrcModel_.get());
-    searchSrcModel_.reset(new SearchResultsListModel(lrcInstance_));
-    searchModel_->bindSourceModel(searchSrcModel_.get());
-
     connectConversationModel();
 
-    updateConversationFilterData();
-
     set_currentTypeFilter(lrcInstance_->getCurrentAccountInfo().profileInfo.type);
 }
 
@@ -502,6 +493,14 @@ ConversationsAdapter::connectConversationModel(bool updateFilter)
     if (updateFilter) {
         currentTypeFilter_ = profile::Type::INVALID;
     }
+
+    convSrcModel_.reset(new ConversationListModel(lrcInstance_));
+    convModel_->bindSourceModel(convSrcModel_.get());
+    searchSrcModel_.reset(new SearchResultsListModel(lrcInstance_));
+    searchModel_->bindSourceModel(searchSrcModel_.get());
+
+    updateConversationFilterData();
+
     return true;
 }
 

src/lrcinstance.cpp

@@ -210,19 +210,34 @@ LRCInstance::getConversationFromCallId(const QString& callId, const QString& acc
 ConversationModel*
 LRCInstance::getCurrentConversationModel()
 {
-    return getCurrentAccountInfo().conversationModel.get();
+    try {
+        const auto& accInfo = getCurrentAccountInfo();
+        return accInfo.conversationModel.get();
+    } catch (...) {
+        return nullptr;
+    }
 }
 
 NewCallModel*
 LRCInstance::getCurrentCallModel()
 {
-    return getCurrentAccountInfo().callModel.get();
+    try {
+        const auto& accInfo = getCurrentAccountInfo();
+        return accInfo.callModel.get();
+    } catch (...) {
+        return nullptr;
+    }
 }
 
 ContactModel*
 LRCInstance::getCurrentContactModel()
 {
-    return getCurrentAccountInfo().contactModel.get();
+    try {
+        const auto& accInfo = getCurrentAccountInfo();
+        return accInfo.contactModel.get();
+    } catch (...) {
+        return nullptr;
+    }
 }
 
 const QString&