WIP: critical bug EXT-4837 ([NUX] When filter results in null state, provide a message suggesting the user try global search.)

Partial implementation of help text in case of empty list when filtered for Nearby and Recent lists of People panel:
 * Extracted support implementation of several messages for empty list depend of filtering from LLGroupList to LLFlatListEx
 * change inheritence of LLGroupList and LLAvatarList from LLFlatListView to LLFlatListViewEx
 * updated panel people to init Nearby & Recent lists with appropriate messages.

--HG--
branch : product-engine

1 files changed, 2 insertions, 19 deletions

diff --git a/indra/newview/llgrouplist.cpp b/indra/newview/llgrouplist.cpp
index 8a056f836f..f21b6e1085 100644
--- a/indra/newview/llgrouplist.cpp
+++ b/indra/newview/llgrouplist.cpp
@@ -71,18 +71,10 @@ public:
 
 static const LLGroupComparator GROUP_COMPARATOR;
 
-LLGroupList::Params::Params()
-: no_groups_msg("no_groups_msg")
-, no_filtered_groups_msg("no_filtered_groups_msg")
-{
-	
-}
 
 LLGroupList::LLGroupList(const Params& p)
-:	LLFlatListView(p)
+:	LLFlatListViewEx(p)
 	, mDirty(true) // to force initial update
-	, mNoFilteredGroupsMsg(p.no_filtered_groups_msg)
-	, mNoGroupsMsg(p.no_groups_msg)
 {
 	// Listen for agent group changes.
 	gAgent.addListener(this, "new group");
@@ -160,16 +152,7 @@ void LLGroupList::refresh()
 	bool				have_filter		= !mNameFilter.empty();
 
 	// set no items message depend on filter state & total count of groups
-	if (have_filter)
-	{
-		// groups were filtered
-		setNoItemsCommentText(mNoFilteredGroupsMsg);
-	}
-	else if (0 == count)
-	{
-		// user is not a member of any group
-		setNoItemsCommentText(mNoGroupsMsg);
-	}
+	updateNoItemsMessage(have_filter);
 
 	clear();