COPKGManager: add function to get status for new package updates

Origin commit data
------------------
Commit: 6942173bf7
Author: Thilo Graf <dbt@novatux.de>
Date: 2014-11-13 (Thu, 13 Nov 2014)

src/gui/opkg_manager.cpp

@@ -250,6 +250,27 @@ void COPKGManager::updateMenu()
 		menu->setFooter(COPKGManagerFooterButtons, COPKGManagerFooterButtonCount);
 }
 
+bool COPKGManager::hasUpdates()
+{
+	if (!hasOpkgSupport())
+		return false;
+
+	bool ret = false;
+
+	getPkgData(OM_LIST);
+	getPkgData(OM_LIST_UPGRADEABLE);
+
+	for (map<string, struct pkg>::iterator it = pkg_map.begin(); it != pkg_map.end(); it++){
+		if (it->second.upgradable){
+			dprintf(DEBUG_INFO,  "[neutrino opkg] Update packages available...\n");
+			ret = true;
+		}
+	}
+
+	pkg_map.clear();
+	return ret;
+}
+
 void COPKGManager::refreshMenu() {
 	list_installed_done = false,
 	list_upgradeable_done = false;

src/gui/opkg_manager.h

@@ -86,5 +86,6 @@ class COPKGManager : public CMenuTarget
 
 		int exec(CMenuTarget* parent, const std::string & actionKey);
 		static bool hasOpkgSupport();
+		bool hasUpdates();
 };
 #endif