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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 <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "chrome/browser/history/history_types.h"
#include "chrome/browser/ui/search/instant_ntp_prerenderer.h"
#include "chrome/common/instant_types.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 InstantExtendedTest;
class InstantIOContext;
class InstantServiceObserver;
class InstantTestBase;
class Profile;
class ThemeService;
namespace content {
class WebContents;
}
namespace net {
class URLRequest;
}
// Tracks render process host IDs that are associated with Instant.
class InstantService : public BrowserContextKeyedService,
public content::NotificationObserver {
public:
explicit InstantService(Profile* profile);
virtual ~InstantService();
// Add, remove, and query RenderProcessHost IDs that are associated with
// Instant processes.
void AddInstantProcess(int process_id);
bool IsInstantProcess(int process_id) const;
// Adds/Removes InstantService observers.
void AddObserver(InstantServiceObserver* observer);
void RemoveObserver(InstantServiceObserver* observer);
#if defined(UNIT_TEST)
int GetInstantProcessCount() const {
return process_ids_.size();
}
#endif
// Most visited item API.
// Invoked by the InstantController when the Instant page wants to delete a
// Most Visited item.
void DeleteMostVisitedItem(const GURL& url);
// Invoked by the InstantController when the Instant page wants to undo the
// blacklist action.
void UndoMostVisitedDeletion(const GURL& url);
// Invoked by the InstantController when the Instant page wants to undo all
// Most Visited deletions.
void UndoAllMostVisitedDeletions();
// Invoked by the InstantController to update theme information for NTP.
//
// TODO(kmadhusu): Invoking this from InstantController shouldn't be
// necessary. Investigate more and remove this from here.
void UpdateThemeInfo();
// Invoked by the InstantController to update most visited items details for
// NTP.
void UpdateMostVisitedItemsInfo();
// Forwards the request to InstantNTPPrerenderer to release and return the
// preloaded InstantNTP WebContents. May be NULL. InstantNTPPrerenderer will
// load a new InstantNTP after releasing the preloaded contents.
scoped_ptr<content::WebContents> ReleaseNTPContents() WARN_UNUSED_RESULT;
// The NTP WebContents. May be NULL. InstantNTPPrerenderer retains ownership.
content::WebContents* GetNTPContents() const;
// Notifies InstantService about the creation of a BrowserInstantController
// object. Used to preload InstantNTP.
void OnBrowserInstantControllerCreated();
// Notifies InstantService about the destruction of a BrowserInstantController
// object. Used to destroy the preloaded InstantNTP.
void OnBrowserInstantControllerDestroyed();
private:
friend class InstantExtendedTest;
friend class InstantTestBase;
FRIEND_TEST_ALL_PREFIXES(InstantExtendedNetworkTest,
NTPReactsToNetworkChanges);
FRIEND_TEST_ALL_PREFIXES(InstantExtendedManualTest,
MANUAL_ShowsGoogleNTP);
FRIEND_TEST_ALL_PREFIXES(InstantExtendedManualTest,
MANUAL_SearchesFromFakebox);
FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, ProcessIsolation);
// Overridden from BrowserContextKeyedService:
virtual void Shutdown() OVERRIDE;
// Overridden from content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Called when we get new most visited items from TopSites, registered as an
// async callback. Parses them and sends them to the renderer via
// SendMostVisitedItems.
void OnMostVisitedItemsReceived(const history::MostVisitedURLList& data);
// Notifies the observer about the last known most visited items.
void NotifyAboutMostVisitedItems();
// Theme changed notification handler.
void OnThemeChanged(ThemeService* theme_service);
// Used by tests.
InstantNTPPrerenderer* ntp_prerenderer();
Profile* const profile_;
// The process ids associated with Instant processes.
std::set<int> process_ids_;
// InstantMostVisitedItems sent to the Instant Pages.
std::vector<InstantMostVisitedItem> most_visited_items_;
// Theme-related data for NTP overlay to adopt themes.
scoped_ptr<ThemeBackgroundInfo> theme_info_;
ObserverList<InstantServiceObserver> observers_;
content::NotificationRegistrar registrar_;
scoped_refptr<InstantIOContext> instant_io_context_;
InstantNTPPrerenderer ntp_prerenderer_;
// Total number of BrowserInstantController objects (does not include objects
// created for OTR browser windows). Used to preload and delete InstantNTP.
size_t browser_instant_controller_object_count_;
// Used for Top Sites async retrieval.
base::WeakPtrFactory<InstantService> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(InstantService);
};
#endif // CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
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