From d54aac14c8f0c8c68f937b1dfb1970f4594947bc Mon Sep 17 00:00:00 2001
From: HanzZ <hanzz.k@gmail.com>
Date: Fri, 25 Jan 2013 17:55:52 +0100
Subject: [PATCH] Cache nodes in libpurple backend

---
 backends/libpurple/main.cpp | 62 +++++++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/backends/libpurple/main.cpp b/backends/libpurple/main.cpp
index 4695389d..7ceedad6 100644
--- a/backends/libpurple/main.cpp
+++ b/backends/libpurple/main.cpp
@@ -90,6 +90,14 @@ struct FTData {
 	bool paused;
 };
 
+struct NodeCache {
+	PurpleAccount *account;
+	std::map<PurpleBlistNode *, int> nodes;
+	int timer;
+};
+
+bool caching = true;
+
 static void *notify_user_info(PurpleConnection *gc, const char *who, PurpleNotifyUserInfo *user_info);
 
 static gboolean ft_ui_ready(void *data) {
@@ -356,6 +364,12 @@ class SpectrumNetworkPlugin : public NetworkPlugin {
 		void handleLogoutRequest(const std::string &user, const std::string &legacyName) {
 			PurpleAccount *account = m_sessions[user];
 			if (account) {
+				if (account->ui_data) {
+					NodeCache *cache = (NodeCache *) account->ui_data;
+					purple_timeout_remove_wrapped(cache->timer);
+					delete cache;
+					account->ui_data = NULL;
+				}
 				if (purple_account_get_int_wrapped(account, "version", 0) != 0) {
 					std::string data = stringOf(purple_account_get_int_wrapped(account, "version", 0));
 					g_file_set_contents ("gfire.cfg", data.c_str(), data.size(), NULL);
@@ -805,12 +819,56 @@ static std::vector<std::string> getGroups(PurpleBuddy *m_buddy) {
 	return groups;
 }
 
-static void buddyListNewNode(PurpleBlistNode *node) {
+void buddyListNewNode(PurpleBlistNode *node);
+
+static gboolean new_node_cache(void *data) {
+	NodeCache *cache = (NodeCache *) data;
+	caching = false;
+	for (std::map<PurpleBlistNode *, int>::const_iterator it = cache->nodes.begin(); it != cache->nodes.end(); it++) {
+		buddyListNewNode(it->first);
+	}
+	caching = true;
+
+	cache->account->ui_data = NULL;
+	delete cache;
+
+	return FALSE;
+}
+
+static void buddyNodeRemoved(PurpleBuddyList *list, PurpleBlistNode *node) {
 	if (!PURPLE_BLIST_NODE_IS_BUDDY_WRAPPED(node))
 		return;
 	PurpleBuddy *buddy = (PurpleBuddy *) node;
 	PurpleAccount *account = purple_buddy_get_account_wrapped(buddy);
 
+	if (!account->ui_data) {
+		return;
+	}
+
+	NodeCache *cache = (NodeCache *) account->ui_data;
+	cache->nodes.erase(node);
+}
+
+void buddyListNewNode(PurpleBlistNode *node) {
+	if (!PURPLE_BLIST_NODE_IS_BUDDY_WRAPPED(node))
+		return;
+	PurpleBuddy *buddy = (PurpleBuddy *) node;
+	PurpleAccount *account = purple_buddy_get_account_wrapped(buddy);
+
+	if (caching) {
+		if (!account->ui_data) {
+			NodeCache *cache = new NodeCache;
+			cache->account = account;
+			cache->timer = purple_timeout_add_wrapped(400, new_node_cache, cache);
+			account->ui_data = (void *) cache;
+		}
+
+		NodeCache *cache = (NodeCache *) account->ui_data;
+		cache->nodes[node] = 1;
+		return;
+	}
+	
+
 	std::vector<std::string> groups = getGroups(buddy);
 	LOG4CXX_INFO(logger, "Buddy updated " << np->m_accounts[account] << " " << purple_buddy_get_name_wrapped(buddy) << " " << getAlias(buddy) << " group (" << groups.size() << ")=" << groups[0]);
 
@@ -886,7 +944,7 @@ static PurpleBlistUiOps blistUiOps =
 	buddyListNewNode,
 	NULL,
 	buddyListUpdate,
-	NULL, //NodeRemoved,
+	buddyNodeRemoved,
 	NULL,
 	NULL,
 	NULL, // buddyListAddBuddy,