Don't allow providers to return more than 100 results at a time.

src/globalsearch/globalsearch.cpp

@@ -26,6 +26,7 @@
 
 const int GlobalSearch::kDelayedSearchTimeoutMs = 200;
 const char* GlobalSearch::kSettingsGroup = "GlobalSearch";
+const int GlobalSearch::kMaxResultsPerEmission = 100;
 
 
 GlobalSearch::GlobalSearch(QObject* parent)
@@ -126,6 +127,15 @@ void GlobalSearch::ResultsAvailableSlot(int id, SearchProvider::ResultList resul
   if (results.isEmpty())
     return;
 
+  // Limit the number of results that are used from each emission.
+  // Just a sanity check to stop some providers (Jamendo) returning thousands
+  // of results.
+  if (results.count() > kMaxResultsPerEmission) {
+    SearchProvider::ResultList::iterator begin = results.begin();
+    std::advance(begin, kMaxResultsPerEmission);
+    results.erase(begin, results.end());
+  }
+
   // Load cached pixmaps into the results
   for (SearchProvider::ResultList::iterator it = results.begin() ; it != results.end() ; ++it) {
     it->pixmap_cache_key_ = PixmapCacheKey(*it);

src/globalsearch/globalsearch.h

@@ -35,6 +35,7 @@ public:
 
   static const int kDelayedSearchTimeoutMs;
   static const char* kSettingsGroup;
+  static const int kMaxResultsPerEmission;
 
   void AddProvider(SearchProvider* provider, bool enable_by_default = true);
   // Try to change provider state. Returns false if we can't (e.g. we can't