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// Copyright (c) 2012 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_UI_WEBUI_NTP_NEW_TAB_UI_H_
#define CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_UI_H_
#include <string>
#include "base/gtest_prod_util.h"
#include "base/prefs/pref_change_registrar.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/url_data_source.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_ui_controller.h"
class GURL;
class Profile;
namespace base {
class DictionaryValue;
}
namespace user_prefs {
class PrefRegistrySyncable;
}
// The WebUIController used for the New Tab page.
class NewTabUI : public content::WebUIController,
public content::WebContentsObserver,
public content::NotificationObserver {
public:
explicit NewTabUI(content::WebUI* web_ui);
~NewTabUI() override;
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
// Returns whether or not to show apps pages.
static bool ShouldShowApps();
// Returns whether or not "Discovery" in the NTP is Enabled.
static bool IsDiscoveryInNTPEnabled();
// Adds "url", "title", and "direction" keys on incoming dictionary, setting
// title as the url as a fallback on empty title.
static void SetUrlTitleAndDirection(base::DictionaryValue* dictionary,
const base::string16& title,
const GURL& gurl);
// Adds "full_name" and "full_name_direction" keys on incoming dictionary.
static void SetFullNameAndDirection(const base::string16& full_name,
base::DictionaryValue* dictionary);
// Returns a pointer to a NewTabUI if the WebUIController object is a new tab
// page.
static NewTabUI* FromWebUIController(content::WebUIController* ui);
// The current preference version.
static int current_pref_version() { return current_pref_version_; }
// WebUIController implementation:
void RenderViewCreated(content::RenderViewHost* render_view_host) override;
void RenderViewReused(content::RenderViewHost* render_view_host) override;
// WebContentsObserver implementation:
void WasHidden() override;
bool showing_sync_bubble() { return showing_sync_bubble_; }
void set_showing_sync_bubble(bool showing) { showing_sync_bubble_ = showing; }
class NewTabHTMLSource : public content::URLDataSource {
public:
explicit NewTabHTMLSource(Profile* profile);
~NewTabHTMLSource() override;
// content::URLDataSource implementation.
std::string GetSource() const override;
void StartDataRequest(
const std::string& path,
int render_process_id,
int render_frame_id,
const content::URLDataSource::GotDataCallback& callback) override;
std::string GetMimeType(const std::string&) const override;
bool ShouldReplaceExistingSource() const override;
bool ShouldAddContentSecurityPolicy() const override;
// Adds |resource| to the source. |resource_id| is resource id or 0,
// which means return empty data set. |mime_type| is mime type of the
// resource.
void AddResource(const char* resource,
const char* mime_type,
int resource_id);
private:
// Pointer back to the original profile.
Profile* profile_;
// Maps resource files to mime types an resource ids.
std::map<std::string, std::pair<std::string, int> > resource_map_;
DISALLOW_COPY_AND_ASSIGN(NewTabHTMLSource);
};
private:
FRIEND_TEST_ALL_PREFIXES(NewTabUITest, UpdateUserPrefsVersion);
// content::NotificationObserver implementation.
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// If |web_contents| has an NTP URL, emits a number of NTP statistics (like
// mouseovers counts) associated with |web_contents|, to be logged in UMA
// histograms.
void EmitNtpStatistics();
void OnShowBookmarkBarChanged();
void StartTimingPaint(content::RenderViewHost* render_view_host);
void PaintTimeout();
Profile* GetProfile() const;
content::NotificationRegistrar registrar_;
// The time when we started benchmarking.
base::TimeTicks start_;
// The last time we got a paint notification.
base::TimeTicks last_paint_;
// Scoping so we can be sure our timeouts don't outlive us.
base::OneShotTimer<NewTabUI> timer_;
// The preference version. This used for migrating prefs of the NTP.
static const int current_pref_version_ = 3;
// If the sync promo NTP bubble is being shown.
bool showing_sync_bubble_;
PrefChangeRegistrar pref_change_registrar_;
DISALLOW_COPY_AND_ASSIGN(NewTabUI);
};
#endif // CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_UI_H_
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