SH-4137 WIP - added callback-based support for purge descendents, remove category

6 files changed, 321 insertions, 221 deletions

diff --git a/indra/newview/llinventorybridge.cpp b/indra/newview/llinventorybridge.cpp
index a5043a30ac..27f35c5946 100644
--- a/indra/newview/llinventorybridge.cpp
+++ b/indra/newview/llinventorybridge.cpp
@@ -1159,17 +1159,10 @@ LLInvFVBridge* LLInvFVBridge::createBridge(LLAssetType::EType asset_type,
 
 void LLInvFVBridge::purgeItem(LLInventoryModel *model, const LLUUID &uuid)
 {
-	LLInventoryCategory* cat = model->getCategory(uuid);
-	if (cat)
-	{
-		model->purgeDescendentsOf(uuid);
-		model->notifyObservers();
-	}
 	LLInventoryObject* obj = model->getObject(uuid);
 	if (obj)
 	{
-		model->purgeObject(uuid);
-		model->notifyObservers();
+		remove_inventory_object(uuid, NULL);
 	}
 }
 
diff --git a/indra/newview/llinventorymodel.cpp b/indra/newview/llinventorymodel.cpp
index a0b9e7b0ec..ae8efeecda 100755
--- a/indra/newview/llinventorymodel.cpp
+++ b/indra/newview/llinventorymodel.cpp
@@ -1136,6 +1136,79 @@ void LLInventoryModel::changeCategoryParent(LLViewerInventoryCategory* cat,
 	notifyObservers();
 }
 
+// Update model after descendents have been purged.
+void LLInventoryModel::onDescendentsPurgedFromServer(const LLUUID& object_id)
+{
+	LLPointer<LLViewerInventoryCategory> cat = getCategory(object_id);
+	if (cat.notNull())
+	{
+		// do the cache accounting
+		S32 descendents = cat->getDescendentCount();
+		if(descendents > 0)
+		{
+			LLInventoryModel::LLCategoryUpdate up(object_id, -descendents);
+			accountForUpdate(up);
+		}
+
+		// we know that descendent count is 0, however since the
+		// accounting may actually not do an update, we should force
+		// it here.
+		cat->setDescendentCount(0);
+
+		// unceremoniously remove anything we have locally stored.
+		LLInventoryModel::cat_array_t categories;
+		LLInventoryModel::item_array_t items;
+		collectDescendents(object_id,
+						   categories,
+						   items,
+						   LLInventoryModel::INCLUDE_TRASH);
+		S32 count = items.count();
+
+		LLUUID uu_id;
+		for(S32 i = 0; i < count; ++i)
+		{
+			uu_id = items.get(i)->getUUID();
+
+			// This check prevents the deletion of a previously deleted item.
+			// This is necessary because deletion is not done in a hierarchical
+			// order. The current item may have been already deleted as a child
+			// of its deleted parent.
+			if (getItem(uu_id))
+			{
+				deleteObject(uu_id);
+			}
+		}
+
+		count = categories.count();
+		for(S32 i = 0; i < count; ++i)
+		{
+			uu_id = categories.get(i)->getUUID();
+			if (getCategory(uu_id))
+			{
+				deleteObject(uu_id);
+			}
+		}
+	}
+}
+
+// Update model after an item is confirmed as removed from
+// server. Works for categories or items.
+void LLInventoryModel::onObjectDeletedFromServer(const LLUUID& object_id)
+{
+	LLPointer<LLInventoryObject> obj = getObject(object_id);
+	if(obj)
+	{
+		// From item/cat removeFromServer()
+		LLInventoryModel::LLCategoryUpdate up(obj->getParentUUID(), -1);
+		accountForUpdate(up);
+
+		// From purgeObject()
+		LLPreview::hide(object_id);
+		deleteObject(object_id);
+	}
+}
+
+
 // Delete a particular inventory object by ID.
 void LLInventoryModel::deleteObject(const LLUUID& id)
 {
@@ -1187,20 +1260,7 @@ void LLInventoryModel::deleteObject(const LLUUID& id)
 	{
 		updateLinkedObjectsFromPurge(id);
 	}
-	gInventory.notifyObservers();
-}
-
-// Delete a particular inventory item by ID, and remove it from the server.
-void LLInventoryModel::purgeObject(const LLUUID &id)
-{
-	lldebugs << "LLInventoryModel::purgeObject() [ id: " << id << " ] " << llendl;
-	LLPointer<LLInventoryObject> obj = getObject(id);
-	if(obj)
-	{
-		obj->removeFromServer();
-		LLPreview::hide(id);
-		deleteObject(id);
-	}
+	notifyObservers();
 }
 
 void LLInventoryModel::updateLinkedObjectsFromPurge(const LLUUID &baseobj_id)
@@ -1225,119 +1285,6 @@ void LLInventoryModel::updateLinkedObjectsFromPurge(const LLUUID &baseobj_id)
 	}
 }
 
-// This is a method which collects the descendents of the id
-// provided. If the category is not found, no action is
-// taken. This method goes through the long winded process of
-// cancelling any calling cards, removing server representation of
-// folders, items, etc in a fairly efficient manner.
-void LLInventoryModel::purgeDescendentsOf(const LLUUID& id)
-{
-	EHasChildren children = categoryHasChildren(id);
-	if(children == CHILDREN_NO)
-	{
-		llinfos << "Not purging descendents of " << id << llendl;
-		return;
-	}
-	LLPointer<LLViewerInventoryCategory> cat = getCategory(id);
-	if (cat.notNull())
-	{
-		if (LLClipboard::instance().hasContents() && LLClipboard::instance().isCutMode())
-		{
-			// Something on the clipboard is in "cut mode" and needs to be preserved
-			llinfos << "LLInventoryModel::purgeDescendentsOf " << cat->getName()
-			<< " iterate and purge non hidden items" << llendl;
-			cat_array_t* categories;
-			item_array_t* items;
-			// Get the list of direct descendants in tha categoy passed as argument
-			getDirectDescendentsOf(id, categories, items);
-			std::vector<LLUUID> list_uuids;
-			// Make a unique list with all the UUIDs of the direct descendants (items and categories are not treated differently)
-			// Note: we need to do that shallow copy as purging things will invalidate the categories or items lists
-			for (cat_array_t::const_iterator it = categories->begin(); it != categories->end(); ++it)
-			{
-				list_uuids.push_back((*it)->getUUID());
-			}
-			for (item_array_t::const_iterator it = items->begin(); it != items->end(); ++it)
-			{
-				list_uuids.push_back((*it)->getUUID());
-			}
-			// Iterate through the list and only purge the UUIDs that are not on the clipboard
-			for (std::vector<LLUUID>::const_iterator it = list_uuids.begin(); it != list_uuids.end(); ++it)
-			{
-				if (!LLClipboard::instance().isOnClipboard(*it))
-				{
-					purgeObject(*it);
-				}
-			}
-		}
-		else
-		{
-			// Fast purge
-			// do the cache accounting
-			llinfos << "LLInventoryModel::purgeDescendentsOf " << cat->getName()
-				<< llendl;
-			S32 descendents = cat->getDescendentCount();
-			if(descendents > 0)
-			{
-				LLCategoryUpdate up(id, -descendents);
-				accountForUpdate(up);
-			}
-
-			// we know that descendent count is 0, however since the
-			// accounting may actually not do an update, we should force
-			// it here.
-			cat->setDescendentCount(0);
-
-			// send it upstream
-			LLMessageSystem* msg = gMessageSystem;
-			msg->newMessage("PurgeInventoryDescendents");
-			msg->nextBlock("AgentData");
-			msg->addUUID("AgentID", gAgent.getID());
-			msg->addUUID("SessionID", gAgent.getSessionID());
-			msg->nextBlock("InventoryData");
-			msg->addUUID("FolderID", id);
-			gAgent.sendReliableMessage();
-
-			// unceremoniously remove anything we have locally stored.
-			cat_array_t categories;
-			item_array_t items;
-			collectDescendents(id,
-							   categories,
-							   items,
-							   INCLUDE_TRASH);
-			S32 count = items.count();
-
-			item_map_t::iterator item_map_end = mItemMap.end();
-			cat_map_t::iterator cat_map_end = mCategoryMap.end();
-			LLUUID uu_id;
-
-			for(S32 i = 0; i < count; ++i)
-			{
-				uu_id = items.get(i)->getUUID();
-
-				// This check prevents the deletion of a previously deleted item.
-				// This is necessary because deletion is not done in a hierarchical
-				// order. The current item may have been already deleted as a child
-				// of its deleted parent.
-				if (mItemMap.find(uu_id) != item_map_end)
-				{
-					deleteObject(uu_id);
-				}
-			}
-
-			count = categories.count();
-			for(S32 i = 0; i < count; ++i)
-			{
-				uu_id = categories.get(i)->getUUID();
-				if (mCategoryMap.find(uu_id) != cat_map_end)
-				{
-					deleteObject(uu_id);
-				}
-			}
-		}
-	}
-}
-
 // Add/remove an observer. If the observer is destroyed, be sure to
 // remove it.
 void LLInventoryModel::addObserver(LLInventoryObserver* observer)
@@ -3114,8 +3061,7 @@ bool LLInventoryModel::callbackEmptyFolderType(const LLSD& notification, const L
 	if (option == 0) // YES
 	{
 		const LLUUID folder_id = findCategoryUUIDForType(preferred_type);
-		purgeDescendentsOf(folder_id);
-		notifyObservers();
+		purge_descendents_of(folder_id, NULL);
 	}
 	return false;
 }
@@ -3130,8 +3076,7 @@ void LLInventoryModel::emptyFolderType(const std::string notification, LLFolderT
 	else
 	{
 		const LLUUID folder_id = findCategoryUUIDForType(preferred_type);
-		purgeDescendentsOf(folder_id);
-		notifyObservers();
+		purge_descendents_of(folder_id, NULL);
 	}
 }
 
diff --git a/indra/newview/llinventorymodel.h b/indra/newview/llinventorymodel.h
index 50b57ea08d..b7e1888f20 100755
--- a/indra/newview/llinventorymodel.h
+++ b/indra/newview/llinventorymodel.h
@@ -325,6 +325,14 @@ public:
 	// Delete
 	//--------------------------------------------------------------------
 public:
+	
+	// Update model after an item is confirmed as removed from
+	// server. Works for categories or items.
+	void onObjectDeletedFromServer(const LLUUID& item_id);
+
+	// Update model after all descendents removed from server.
+	void onDescendentsPurgedFromServer(const LLUUID& object_id);
+
 	// Delete a particular inventory object by ID. Will purge one
 	// object from the internal data structures, maintaining a
 	// consistent internal state. No cache accounting, observer
@@ -337,17 +345,6 @@ public:
 	/// removeItem() or removeCategory(), whichever is appropriate
 	void removeObject(const LLUUID& object_id);
 
-	// Delete a particular inventory object by ID, and delete it from
-	// the server. Also updates linked items.
-	void purgeObject(const LLUUID& id);
-
-	// Collects and purges the descendants of the id
-	// provided. If the category is not found, no action is
-	// taken. This method goes through the long winded process of
-	// removing server representation of folders and items while doing
-	// cache accounting in a fairly efficient manner. This method does
-	// not notify observers (though maybe it should...)
-	void purgeDescendentsOf(const LLUUID& id);
 protected:
 	void updateLinkedObjectsFromPurge(const LLUUID& baseobj_id);
 	
diff --git a/indra/newview/llpreview.cpp b/indra/newview/llpreview.cpp
index 04934b13f1..452efad291 100644
--- a/indra/newview/llpreview.cpp
+++ b/indra/newview/llpreview.cpp
@@ -401,13 +401,6 @@ void LLPreview::onDiscardBtn(void* data)
 	self->mForceClose = TRUE;
 	self->closeFloater();
 
-	// Delete the item entirely
-	/*
-	item->removeFromServer();
-	gInventory.deleteObject(item->getUUID());
-	gInventory.notifyObservers();
-	*/
-
 	// Move the item to the trash
 	const LLUUID trash_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_TRASH);
 	if (item->getParentUUID() != trash_id)
diff --git a/indra/newview/llviewerinventory.cpp b/indra/newview/llviewerinventory.cpp
index 06efeb86d9..fbd6b292bd 100755
--- a/indra/newview/llviewerinventory.cpp
+++ b/indra/newview/llviewerinventory.cpp
@@ -65,6 +65,7 @@
 #include "llavataractions.h"
 #include "lllogininstance.h"
 #include "llfavoritesbar.h"
+#include "llclipboard.h"
 
 // Two do-nothing ops for use in callbacks.
 void no_op_inventory_func(const LLUUID&) {} 
@@ -345,24 +346,6 @@ void LLViewerInventoryItem::cloneViewerItem(LLPointer<LLViewerInventoryItem>& ne
 	}
 }
 
-void LLViewerInventoryItem::removeFromServer()
-{
-	lldebugs << "Removing inventory item " << mUUID << " from server."
-			 << llendl;
-
-	LLInventoryModel::LLCategoryUpdate up(mParentUUID, -1);
-	gInventory.accountForUpdate(up);
-
-	LLMessageSystem* msg = gMessageSystem;
-	msg->newMessageFast(_PREHASH_RemoveInventoryItem);
-	msg->nextBlockFast(_PREHASH_AgentData);
-	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
-	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID()); 
-	msg->nextBlockFast(_PREHASH_InventoryData);
-	msg->addUUIDFast(_PREHASH_ItemID, mUUID);
-	gAgent.sendReliableMessage();
-}
-
 void LLViewerInventoryItem::updateServer(BOOL is_new) const
 {
 	if(!mIsComplete)
@@ -637,30 +620,6 @@ void LLViewerInventoryCategory::updateServer(BOOL is_new) const
 	gAgent.sendReliableMessage();
 }
 
-void LLViewerInventoryCategory::removeFromServer( void )
-{
-	llinfos << "Removing inventory category " << mUUID << " from server."
-			<< llendl;
-	// communicate that change with the server.
-	if(LLFolderType::lookupIsProtectedType(mPreferredType))
-	{
-		LLNotificationsUtil::add("CannotRemoveProtectedCategories");
-		return;
-	}
-
-	LLInventoryModel::LLCategoryUpdate up(mParentUUID, -1);
-	gInventory.accountForUpdate(up);
-
-	LLMessageSystem* msg = gMessageSystem;
-	msg->newMessageFast(_PREHASH_RemoveInventoryFolder);
-	msg->nextBlockFast(_PREHASH_AgentData);
-	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
-	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-	msg->nextBlockFast(_PREHASH_FolderData);
-	msg->addUUIDFast(_PREHASH_FolderID, mUUID);
-	gAgent.sendReliableMessage();
-}
-
 S32 LLViewerInventoryCategory::getVersion() const
 {
 	return mVersion;
@@ -1179,25 +1138,10 @@ void move_inventory_item(
 	gAgent.sendReliableMessage();
 }
 
-void handle_item_deletion(const LLUUID& item_id)
-{
-	LLPointer<LLViewerInventoryItem> obj = gInventory.getItem(item_id);
-	if(obj)
-	{
-		// From item removeFromServer()
-		LLInventoryModel::LLCategoryUpdate up(obj->getParentUUID(), -1);
-		gInventory.accountForUpdate(up);
-
-		// From purgeObject()
-		LLPreview::hide(item_id);
-		gInventory.deleteObject(item_id);
-	}
-}
-
-class RemoveItemResponder: public LLHTTPClient::Responder
+class RemoveObjectResponder: public LLHTTPClient::Responder
 {
 public:
-	RemoveItemResponder(const LLUUID& item_id, LLPointer<LLInventoryCallback> callback):
+	RemoveObjectResponder(const LLUUID& item_id, LLPointer<LLInventoryCallback> callback):
 		mItemUUID(item_id),
 		mCallback(callback)
 	{
@@ -1212,7 +1156,7 @@ public:
 		}
 		llinfos << "succeeded: " << ll_pretty_print_sd(content) << llendl;
 
-		handle_item_deletion(mItemUUID);
+		gInventory.onObjectDeletedFromServer(mItemUUID);
 
 		if (mCallback)
 		{
@@ -1251,7 +1195,7 @@ void remove_inventory_item(
 		{
 			std::string url = cap + std::string("/item/") + item_id.asString();
 			llinfos << "url: " << url << llendl;
-			LLCurl::ResponderPtr responder_ptr = new RemoveItemResponder(item_id,cb);
+			LLCurl::ResponderPtr responder_ptr = new RemoveObjectResponder(item_id,cb);
 			LLHTTPClient::del(url,responder_ptr);
 		}
 		else // no cap
@@ -1267,7 +1211,7 @@ void remove_inventory_item(
 
 			// Update inventory and call callback immediately since
 			// message-based system has no callback mechanism (!)
-			handle_item_deletion(item_id);
+			gInventory.onObjectDeletedFromServer(item_id);
 			if (cb)
 			{
 				cb->fire(item_id);
@@ -1280,6 +1224,224 @@ void remove_inventory_item(
 	}
 }
 
+class LLRemoveObjectOnDestroy: public LLInventoryCallback
+{
+public:
+	LLRemoveObjectOnDestroy(const LLUUID& item_id, LLPointer<LLInventoryCallback> cb):
+		mID(item_id),
+		mCB(cb)
+	{
+	}
+	/* virtual */ void fire(const LLUUID& item_id) {}
+	~LLRemoveObjectOnDestroy()
+	{
+		remove_inventory_object(mID, mCB);
+	}
+private:
+	LLUUID mID;
+	LLPointer<LLInventoryCallback> mCB;
+};
+
+void remove_inventory_category(
+	const LLUUID& cat_id,
+	LLPointer<LLInventoryCallback> cb)
+{
+	llinfos << "cat_id: [" << cat_id << "] " << llendl;
+	LLPointer<LLViewerInventoryCategory> obj = gInventory.getCategory(cat_id);
+	if(obj)
+	{
+		if(LLFolderType::lookupIsProtectedType(obj->getPreferredType()))
+		{
+			LLNotificationsUtil::add("CannotRemoveProtectedCategories");
+			return;
+		}
+		LLInventoryModel::EHasChildren children = gInventory.categoryHasChildren(cat_id);
+		if(children != LLInventoryModel::CHILDREN_NO)
+		{
+			llinfos << "Will purge descendents first before deleting category " << cat_id << llendl;
+			LLPointer<LLInventoryCallback> wrap_cb = new LLRemoveObjectOnDestroy(cat_id,cb); 
+			purge_descendents_of(cat_id, wrap_cb);
+			return;
+		}
+
+		std::string cap;
+		if (gAgent.getRegion())
+		{
+			cap = gAgent.getRegion()->getCapability("InventoryAPIv3");
+		}
+		if (!cap.empty())
+		{
+			std::string url = cap + std::string("/category/") + cat_id.asString();
+			llinfos << "url: " << url << llendl;
+			LLCurl::ResponderPtr responder_ptr = new RemoveObjectResponder(cat_id,cb);
+			LLHTTPClient::del(url,responder_ptr);
+		}
+		else // no cap
+		{
+
+			LLMessageSystem* msg = gMessageSystem;
+			msg->newMessageFast(_PREHASH_RemoveInventoryFolder);
+			msg->nextBlockFast(_PREHASH_AgentData);
+			msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
+			msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
+			msg->nextBlockFast(_PREHASH_FolderData);
+			msg->addUUIDFast(_PREHASH_FolderID, cat_id);
+			gAgent.sendReliableMessage();
+
+			// Update inventory and call callback immediately since
+			// message-based system has no callback mechanism (!)
+			gInventory.onObjectDeletedFromServer(cat_id);
+			if (cb)
+			{
+				cb->fire(cat_id);
+			}
+		}
+	}
+	else
+	{
+		llwarns << "remove_inventory_category called for invalid or nonexistent item " << cat_id << llendl;
+	}
+}
+
+void remove_inventory_object(
+	const LLUUID& object_id,
+	LLPointer<LLInventoryCallback> cb)
+{
+	if (gInventory.getCategory(object_id))
+	{
+		remove_inventory_category(object_id, cb);
+	}
+	else
+	{
+		remove_inventory_item(object_id, cb);
+	}
+}
+
+class PurgeDescendentsResponder: public LLHTTPClient::Responder
+{
+public:
+	PurgeDescendentsResponder(const LLUUID& item_id, LLPointer<LLInventoryCallback> callback):
+		mItemUUID(item_id),
+		mCallback(callback)
+	{
+	}
+	/* virtual */ void httpSuccess()
+	{
+		const LLSD& content = getContent();
+		if (!content.isMap())
+		{
+			failureResult(HTTP_INTERNAL_ERROR, "Malformed response contents", content);
+			return;
+		}
+		llinfos << "succeeded: " << ll_pretty_print_sd(content) << llendl;
+
+		gInventory.onDescendentsPurgedFromServer(mItemUUID);
+
+		if (mCallback)
+		{
+			mCallback->fire(mItemUUID);
+		}
+	}
+	/*virtual*/ void httpFailure()
+	{
+		const LLSD& content = getContent();
+		if (!content.isMap())
+		{
+			failureResult(HTTP_INTERNAL_ERROR, "Malformed response contents", content);
+			return;
+		}
+		llwarns << "failed for " << mItemUUID << " content: " << ll_pretty_print_sd(content) << llendl;
+	}
+private:
+	LLPointer<LLInventoryCallback> mCallback;
+	const LLUUID mItemUUID;
+};
+
+// This is a method which collects the descendents of the id
+// provided. If the category is not found, no action is
+// taken. This method goes through the long winded process of
+// cancelling any calling cards, removing server representation of
+// folders, items, etc in a fairly efficient manner.
+void purge_descendents_of(const LLUUID& id, LLPointer<LLInventoryCallback> cb)
+{
+	LLInventoryModel::EHasChildren children = gInventory.categoryHasChildren(id);
+	if(children == LLInventoryModel::CHILDREN_NO)
+	{
+		llinfos << "No descendents to purge for " << id << llendl;
+		return;
+	}
+	LLPointer<LLViewerInventoryCategory> cat = gInventory.getCategory(id);
+	if (cat.notNull())
+	{
+		if (LLClipboard::instance().hasContents() && LLClipboard::instance().isCutMode())
+		{
+			// Something on the clipboard is in "cut mode" and needs to be preserved
+			llinfos << "purge_descendents_of clipboard case " << cat->getName()
+			<< " iterate and purge non hidden items" << llendl;
+			LLInventoryModel::cat_array_t* categories;
+			LLInventoryModel::item_array_t* items;
+			// Get the list of direct descendants in tha categoy passed as argument
+			gInventory.getDirectDescendentsOf(id, categories, items);
+			std::vector<LLUUID> list_uuids;
+			// Make a unique list with all the UUIDs of the direct descendants (items and categories are not treated differently)
+			// Note: we need to do that shallow copy as purging things will invalidate the categories or items lists
+			for (LLInventoryModel::cat_array_t::const_iterator it = categories->begin(); it != categories->end(); ++it)
+			{
+				list_uuids.push_back((*it)->getUUID());
+			}
+			for (LLInventoryModel::item_array_t::const_iterator it = items->begin(); it != items->end(); ++it)
+			{
+				list_uuids.push_back((*it)->getUUID());
+			}
+			// Iterate through the list and only purge the UUIDs that are not on the clipboard
+			for (std::vector<LLUUID>::const_iterator it = list_uuids.begin(); it != list_uuids.end(); ++it)
+			{
+				if (!LLClipboard::instance().isOnClipboard(*it))
+				{
+					remove_inventory_object(*it, NULL);
+				}
+			}
+		}
+		else
+		{
+			std::string cap;
+			if (gAgent.getRegion())
+			{
+				cap = gAgent.getRegion()->getCapability("InventoryAPIv3");
+			}
+			if (!cap.empty())
+			{
+				std::string url = cap + std::string("/category/") + id.asString() + "/children";
+				llinfos << "url: " << url << llendl;
+				LLCurl::ResponderPtr responder_ptr = new PurgeDescendentsResponder(id,cb);
+				LLHTTPClient::del(url,responder_ptr);
+			}
+			else // no cap
+			{
+				// Fast purge
+				llinfos << "purge_descendents_of fast case " << cat->getName() << llendl;
+
+				// send it upstream
+				LLMessageSystem* msg = gMessageSystem;
+				msg->newMessage("PurgeInventoryDescendents");
+				msg->nextBlock("AgentData");
+				msg->addUUID("AgentID", gAgent.getID());
+				msg->addUUID("SessionID", gAgent.getSessionID());
+				msg->nextBlock("InventoryData");
+				msg->addUUID("FolderID", id);
+				gAgent.sendReliableMessage();
+
+				// Update model immediately because there is no callback mechanism.
+				gInventory.onDescendentsPurgedFromServer(id);
+				if (cb)
+				{
+					cb->fire(id);
+				}
+			}
+		}
+	}
+}
+
 const LLUUID get_folder_by_itemtype(const LLInventoryItem *src)
 {
 	LLUUID retval = LLUUID::null;
diff --git a/indra/newview/llviewerinventory.h b/indra/newview/llviewerinventory.h
index 6b0e8ed4ef..4e24dc87d1 100755
--- a/indra/newview/llviewerinventory.h
+++ b/indra/newview/llviewerinventory.h
@@ -118,7 +118,6 @@ public:
 	void cloneViewerItem(LLPointer<LLViewerInventoryItem>& newitem) const;
 
 	// virtual methods
-	virtual void removeFromServer( void );
 	virtual void updateParentOnServer(BOOL restamp) const;
 	virtual void updateServer(BOOL is_new) const;
 	void fetchFromServer(void) const;
@@ -198,7 +197,6 @@ public:
 	LLViewerInventoryCategory(const LLViewerInventoryCategory* other);
 	void copyViewerCategory(const LLViewerInventoryCategory* other);
 
-	virtual void removeFromServer();
 	virtual void updateParentOnServer(BOOL restamp_children) const;
 	virtual void updateServer(BOOL is_new) const;
 
@@ -369,6 +367,18 @@ void remove_inventory_item(
 	const LLUUID& item_id,
 	LLPointer<LLInventoryCallback> cb);
 	
+void remove_inventory_category(
+	const LLUUID& cat_id,
+	LLPointer<LLInventoryCallback> cb);
+	
+void remove_inventory_object(
+	const LLUUID& object_id,
+	LLPointer<LLInventoryCallback> cb);
+
+void purge_descendents_of(
+	const LLUUID& cat_id,
+	LLPointer<LLInventoryCallback> cb);
+
 const LLUUID get_folder_by_itemtype(const LLInventoryItem *src);
 
 void copy_inventory_from_notecard(const LLUUID& destination_id,