Merge master (DRTVWR-515) into DRTVWR-516-maint

# Conflicts:
#	autobuild.xml
#	doc/contributions.txt
#	indra/llcommon/llcoros.cpp
#	indra/llmessage/llcoproceduremanager.cpp
#	indra/newview/llfloaterfixedenvironment.cpp
#	indra/newview/llfloaterimsessiontab.cpp

1 files changed, 25 insertions, 0 deletions

diff --git a/indra/newview/llconversationmodel.cpp b/indra/newview/llconversationmodel.cpp
index 27b1f3d20a..a685639427 100644
--- a/indra/newview/llconversationmodel.cpp
+++ b/indra/newview/llconversationmodel.cpp
@@ -341,11 +341,36 @@ void LLConversationItemSession::removeParticipant(const LLUUID& participant_id)
 
 void LLConversationItemSession::clearParticipants()
 {
+    // clearParticipants function potentially is malfunctioning since it only cleans children of models,
+    // it does nothing to views that own those models (listeners)
+    // probably needs to post some kind of 'remove all participants' event
 	clearChildren();
 	mIsLoaded = false;
 	mNeedsRefresh = true;
 }
 
+
+void LLConversationItemSession::clearAndDeparentModels()
+{
+    std::for_each(mChildren.begin(), mChildren.end(),
+        [](LLFolderViewModelItem* c)
+        {
+            if (c->getNumRefs() == 0)
+            {
+                // LLConversationItemParticipant can be created but not assigned to any view,
+                // it was waiting for an "add_participant" event to be processed
+                delete c;
+            }
+            else
+            {
+                // Model is still assigned to some view/widget
+                c->setParent(NULL);
+            }
+        }
+    );
+    mChildren.clear();
+}
+
 LLConversationItemParticipant* LLConversationItemSession::findParticipant(const LLUUID& participant_id)
 {
 	// This is *not* a general tree parsing algorithm. It assumes that a session contains only