EXP-1335 FIXED Dragging folders into Recent Items disabled.

- Dragging folder into Recent Items disabled, but allowed within Recent Items.
- Dragging Contents folder from task inventory disabled.
- Filtering folder contents upon dragging to any inventory panel added, to make the behavior consistent with items filtering during DnD.

1 files changed, 23 insertions, 4 deletions

diff --git a/indra/newview/llinventoryfilter.cpp b/indra/newview/llinventoryfilter.cpp
index 4971ded634..5496c273f2 100644
--- a/indra/newview/llinventoryfilter.cpp
+++ b/indra/newview/llinventoryfilter.cpp
@@ -121,16 +121,35 @@ bool LLInventoryFilter::check(const LLInventoryItem* item)
 	return passed;
 }
 
-bool LLInventoryFilter::checkFolder(const LLFolderViewFolder* folder)
+bool LLInventoryFilter::checkFolder(const LLFolderViewFolder* folder) const
 {
-	// we're showing all folders, overriding filter
-	if (mFilterOps.mShowFolderState == LLInventoryFilter::SHOW_ALL_FOLDERS)
+	if (!folder)
 	{
-		return true;
+		llwarns << "The filter can not be checked on an invalid folder." << llendl;
+		llassert(false); // crash in development builds
+		return false;
 	}
 
 	const LLFolderViewEventListener* listener = folder->getListener();
+	if (!listener)
+	{
+		llwarns << "Folder view event listener not found." << llendl;
+		llassert(false); // crash in development builds
+		return false;
+	}
+
 	const LLUUID folder_id = listener->getUUID();
+
+	return checkFolder(folder_id);
+}
+
+bool LLInventoryFilter::checkFolder(const LLUUID& folder_id) const
+{
+	// we're showing all folders, overriding filter
+	if (mFilterOps.mShowFolderState == LLInventoryFilter::SHOW_ALL_FOLDERS)
+	{
+		return true;
+	}
 	
 	if (mFilterOps.mFilterTypes & FILTERTYPE_CATEGORY)
 	{