1 // Copyright (c) 2011 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 CONTENT_PUBLIC_BROWSER_FONT_LIST_ASYNC_H_ 6 #define CONTENT_PUBLIC_BROWSER_FONT_LIST_ASYNC_H_ 7 8 #include <memory> 9 10 #include "base/callback.h" 11 #include "content/common/content_export.h" 12 13 namespace base { 14 class ListValue; 15 } 16 17 namespace content { 18 19 // Retrieves the list of fonts on the system as a list of strings. It provides 20 // a non-blocking interface to GetFontList_SlowBlocking in common/. 21 // 22 // This function will run asynchronously on a background thread since getting 23 // the font list from the system can be slow. The callback will be executed on 24 // the calling sequence. 25 CONTENT_EXPORT void GetFontListAsync( 26 base::OnceCallback<void(std::unique_ptr<base::ListValue>)> callback); 27 28 } // namespace content 29 30 #endif // CONTENT_PUBLIC_BROWSER_FONT_LIST_ASYNC_H_ 31