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Diffstat (limited to 'chromium/components/ntp_tiles/webui/ntp_tiles_internals_message_handler_client.h')
-rw-r--r-- | chromium/components/ntp_tiles/webui/ntp_tiles_internals_message_handler_client.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/chromium/components/ntp_tiles/webui/ntp_tiles_internals_message_handler_client.h b/chromium/components/ntp_tiles/webui/ntp_tiles_internals_message_handler_client.h new file mode 100644 index 00000000000..d26972d5fc6 --- /dev/null +++ b/chromium/components/ntp_tiles/webui/ntp_tiles_internals_message_handler_client.h @@ -0,0 +1,74 @@ +// Copyright 2016 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef COMPONENTS_NTP_TILES_WEBUI_NTP_TILES_INTERNALS_MESSAGE_HANDLER_CLIENT_H_ +#define COMPONENTS_NTP_TILES_WEBUI_NTP_TILES_INTERNALS_MESSAGE_HANDLER_CLIENT_H_ + +#include <memory> +#include <string> +#include <vector> + +#include "base/callback_forward.h" +#include "base/macros.h" +#include "components/ntp_tiles/ntp_tile_source.h" + +class PrefService; + +namespace base { +class Value; +class ListValue; +} // namespace base + +namespace ntp_tiles { + +class MostVisitedSites; +class PopularSites; + +// Implemented by embedders to hook up NTPTilesInternalsMessageHandler. +class NTPTilesInternalsMessageHandlerClient { + public: + // Returns the PrefService for the embedder and containing WebUI page. + virtual PrefService* GetPrefs() = 0; + + // False if in a browser mode (e.g. incognito) where tiles aren't supported. + virtual bool SupportsNTPTiles() = 0; + + // Returns true if the given source is enabled (even if, in practice, none of + // the tiles would come from it). + virtual bool DoesSourceExist(NTPTileSource source) = 0; + + // Creates a new MostVisitedSites based on the context pf the WebUI page. + virtual std::unique_ptr<ntp_tiles::MostVisitedSites> + MakeMostVisitedSites() = 0; + + // Creates a new PopularSites based on the context pf the WebUI page. + virtual std::unique_ptr<ntp_tiles::PopularSites> MakePopularSites() = 0; + + // Registers a callback in Javascript. See content::WebUI and web::WebUIIOS. + virtual void RegisterMessageCallback( + const std::string& message, + const base::Callback<void(const base::ListValue*)>& callback) = 0; + + // Invokes a function in Javascript. See content::WebUI and web::WebUIIOS. + virtual void CallJavascriptFunctionVector( + const std::string& name, + const std::vector<const base::Value*>& values) = 0; + + // Convenience function for CallJavascriptFunctionVector(). + template <typename... Arg> + void CallJavascriptFunction(const std::string& name, const Arg&... arg) { + CallJavascriptFunctionVector(name, {&arg...}); + } + + protected: + NTPTilesInternalsMessageHandlerClient(); + virtual ~NTPTilesInternalsMessageHandlerClient(); + + private: + DISALLOW_COPY_AND_ASSIGN(NTPTilesInternalsMessageHandlerClient); +}; + +} // namespace ntp_tiles + +#endif // COMPONENTS_NTP_TILES_WEBUI_NTP_TILES_INTERNALS_MESSAGE_HANDLER_CLIENT_H_ |