components/favicon/core/fallback_icon_client.h

   1 // Copyright 2015 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 COMPONENTS_FAVICON_CORE_FALLBACK_ICON_CLIENT_H_
   6 #define COMPONENTS_FAVICON_CORE_FALLBACK_ICON_CLIENT_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/strings/string16.h"
  12 #include "components/keyed_service/core/keyed_service.h"
  13
  14 class GURL;
  15
  16 namespace favicon {
  17
  18 // This class abstracts operations that depend on the embedder's environment,
  19 // e.g. Chrome.
  20 class FallbackIconClient : public KeyedService {
  21  public:
  22   // Returns a list of font names for fallback icon rendering.
  23   virtual const std::vector<std::string>& GetFontNameList() const = 0;
  24
  25   // Returns the text to render in fallback icon for |url|.
  26   virtual base::string16 GetFallbackIconText(const GURL& url) const = 0;
  27
  28  protected:
  29   ~FallbackIconClient() override {}
  30 };
  31
  32 }  // namespace favicon
  33
  34 #endif  // COMPONENTS_FAVICON_CORE_FALLBACK_ICON_CLIENT_H_