1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_APP_LIST_SEARCH_PROVIDER_H_ 6 #define UI_APP_LIST_SEARCH_PROVIDER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/callback.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "base/memory/scoped_vector.h" 12 #include "base/strings/string16.h" 13 #include "ui/app_list/app_list_export.h" 14 15 namespace app_list { 16 17 class SearchResult; 18 19 class APP_LIST_EXPORT SearchProvider { 20 public: 21 typedef ScopedVector<SearchResult> Results; 22 typedef base::Closure ResultChangedCallback; 23 24 SearchProvider(); 25 virtual ~SearchProvider(); 26 27 // Invoked to start a query. 28 virtual void Start(const base::string16& query) = 0; 29 30 // Invoked to stop the current query and no more results changes. 31 virtual void Stop() = 0; 32 33 void set_result_changed_callback(const ResultChangedCallback& callback) { 34 result_changed_callback_ = callback; 35 } 36 37 // TODO(mukai): Fix the ownership and copying of the results. 38 void ReleaseResult(std::vector<SearchResult*>* results); 39 40 const Results& results() const { return results_; } 41 42 protected: 43 // Interface for the derived class to generate search results. 44 void Add(scoped_ptr<SearchResult> result); 45 void ClearResults(); 46 47 private: 48 void FireResultChanged(); 49 50 ResultChangedCallback result_changed_callback_; 51 Results results_; 52 53 DISALLOW_COPY_AND_ASSIGN(SearchProvider); 54 }; 55 56 } // namespace app_list 57 58 #endif // UI_APP_LIST_SEARCH_PROVIDER_H_ 59
