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// Copyright 2013 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_DOM_DISTILLER_WEBUI_DOM_DISTILLER_HANDLER_H_
#define COMPONENTS_DOM_DISTILLER_WEBUI_DOM_DISTILLER_HANDLER_H_
#include <string>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/values.h"
#include "content/public/browser/web_ui_message_handler.h"
namespace dom_distiller {
class DomDistillerService;
// Handler class for DOM Distiller list operations.
class DomDistillerHandler : public content::WebUIMessageHandler {
public:
// The lifetime of |service| has to outlive this handler.
DomDistillerHandler(DomDistillerService* service, const std::string& scheme);
~DomDistillerHandler() override;
// content::WebUIMessageHandler implementation.
void RegisterMessages() override;
// Callback from JavaScript for the "requestEntries" message. This
// requests the list of entries and returns it to the front end by calling
// "onReceivedEntries". There are no JavaScript arguments to this method.
void HandleRequestEntries(const base::ListValue* args);
// Callback from JavaScript for when an article should be added. The first
// element in |args| should be a string representing the URL to be added.
void HandleAddArticle(const base::ListValue* args);
// Callback from JavaScript for when an article is selected. The first element
// in |args| should be a string representing the ID of the entry to be
// selected.
void HandleSelectArticle(const base::ListValue* args);
// Callback from JavaScript for when viewing a URL is requested. The first
// element in |args| should be a string representing the URL to be viewed.
void HandleViewUrl(const base::ListValue* args);
private:
// Callback from DomDistillerService when an article is available.
void OnArticleAdded(bool article_available);
// The DomDistillerService.
DomDistillerService* service_;
// The scheme for DOM distiller articles.
std::string article_scheme_;
// Factory for the creating refs in callbacks.
base::WeakPtrFactory<DomDistillerHandler> weak_ptr_factory_{this};
DISALLOW_COPY_AND_ASSIGN(DomDistillerHandler);
};
} // namespace dom_distiller
#endif // COMPONENTS_DOM_DISTILLER_WEBUI_DOM_DISTILLER_HANDLER_H_