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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 CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
#define CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
#include <map>
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "chrome/common/instant_restricted_id_cache.h"
#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class GURL;
class InstantIOContext;
class Profile;
namespace net {
class URLRequest;
}
// Tracks render process host IDs that are associated with Instant.
class InstantService : public ProfileKeyedService,
public content::NotificationObserver {
public:
explicit InstantService(Profile* profile);
virtual ~InstantService();
// A utility to translate an Instant path if it is of Most Visited item ID
// form. If path is a Most Visited item ID and we have a URL for it, then
// this URL is returned in string form. The |path| is a URL fragment
// corresponding to the path of url with the leading slash ("/") stripped.
// For example, chrome-search://favicon/72 would yield a |path| value of "72",
// and since 72 is a valid uint64 the path is translated to a valid url,
// "http://bingo.com/", say.
static const std::string MaybeTranslateInstantPathOnUI(
Profile* profile, const std::string& path);
static const std::string MaybeTranslateInstantPathOnIO(
const net::URLRequest* request, const std::string& path);
static bool IsInstantPath(const GURL& url);
// Add, remove, and query RenderProcessHost IDs that are associated with
// Instant processes.
void AddInstantProcess(int process_id);
bool IsInstantProcess(int process_id) const;
#if defined(UNIT_TEST)
int GetInstantProcessCount() const {
return process_ids_.size();
}
#endif
// Most visited item API.
// Adds |items| to the |most_visited_item_cache_| assigning restricted IDs in
// the process.
void AddMostVisitedItems(const std::vector<InstantMostVisitedItem>& items);
// Returns the last added InstantMostVisitedItems. After the call to
// |AddMostVisitedItems|, the caller should call this to get the items with
// the assigned IDs.
void GetCurrentMostVisitedItems(
std::vector<InstantMostVisitedItemIDPair>* items) const;
// If the |most_visited_item_id| is found in the cache, sets the |item| to it
// and returns true.
bool GetMostVisitedItemForID(InstantRestrictedID most_visited_item_id,
InstantMostVisitedItem* item) const;
private:
// Overridden from ProfileKeyedService:
virtual void Shutdown() OVERRIDE;
// Overridden from content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
Profile* const profile_;
// The process ids associated with Instant processes.
std::set<int> process_ids_;
// A cache of the InstantMostVisitedItems sent to the Instant Pages.
InstantRestrictedIDCache<InstantMostVisitedItem> most_visited_item_cache_;
content::NotificationRegistrar registrar_;
scoped_refptr<InstantIOContext> instant_io_context_;
DISALLOW_COPY_AND_ASSIGN(InstantService);
};
#endif // CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
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