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// Copyright (c) 2011 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.
#include "chrome/browser/ui/webui/ntp/new_tab_page_handler.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/extensions/default_apps_trial.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/browser/web_resource/notification_promo.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/common/notification_service.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
static const int kIntroDisplayMax = 10;
// The URL of a knowledge-base article about the new NTP.
static const char kNTP4IntroURL[] =
"http://www.google.com/support/chrome/bin/answer.py?answer=95451";
WebUIMessageHandler* NewTabPageHandler::Attach(WebUI* web_ui) {
// Record an open of the NTP with its default page type.
PrefService* prefs = Profile::FromWebUI(web_ui)->GetPrefs();
int shown_page_type = prefs->GetInteger(prefs::kNTPShownPage) >>
kPageIdOffset;
UMA_HISTOGRAM_ENUMERATION("NewTabPage.DefaultPageType",
shown_page_type, kHistogramEnumerationMax);
static bool default_apps_trial_exists =
base::FieldTrialList::TrialExists(kDefaultAppsTrial_Name);
if (default_apps_trial_exists) {
UMA_HISTOGRAM_ENUMERATION(
base::FieldTrial::MakeName("NewTabPage.DefaultPageType",
kDefaultAppsTrial_Name),
shown_page_type, kHistogramEnumerationMax);
}
return WebUIMessageHandler::Attach(web_ui);
}
void NewTabPageHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback("closeNotificationPromo",
base::Bind(&NewTabPageHandler::HandleCloseNotificationPromo,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("notificationPromoViewed",
base::Bind(&NewTabPageHandler::HandleNotificationPromoViewed,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("pageSelected",
base::Bind(&NewTabPageHandler::HandlePageSelected,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("introMessageDismissed",
base::Bind(&NewTabPageHandler::HandleIntroMessageDismissed,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("introMessageSeen",
base::Bind(&NewTabPageHandler::HandleIntroMessageSeen,
base::Unretained(this)));
}
void NewTabPageHandler::HandleCloseNotificationPromo(const ListValue* args) {
NotificationPromo notification_promo(
Profile::FromWebUI(web_ui())->GetPrefs(), NULL);
notification_promo.HandleClosed();
NotifyPromoResourceChanged();
}
void NewTabPageHandler::HandleNotificationPromoViewed(const ListValue* args) {
NotificationPromo notification_promo(
Profile::FromWebUI(web_ui_)->GetPrefs(), NULL);
if (notification_promo.HandleViewed()) {
NotifyPromoResourceChanged();
}
}
void NewTabPageHandler::HandlePageSelected(const ListValue* args) {
double page_id_double;
CHECK(args->GetDouble(0, &page_id_double));
int page_id = static_cast<int>(page_id_double);
double index_double;
CHECK(args->GetDouble(1, &index_double));
int index = static_cast<int>(index_double);
PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
prefs->SetInteger(prefs::kNTPShownPage, page_id | index);
int shown_page_type = page_id >> kPageIdOffset;
UMA_HISTOGRAM_ENUMERATION("NewTabPage.SelectedPageType",
shown_page_type, kHistogramEnumerationMax);
static bool default_apps_trial_exists =
base::FieldTrialList::TrialExists(kDefaultAppsTrial_Name);
if (default_apps_trial_exists) {
UMA_HISTOGRAM_ENUMERATION(
base::FieldTrial::MakeName("NewTabPage.SelectedPageType",
kDefaultAppsTrial_Name),
shown_page_type, kHistogramEnumerationMax);
}
}
void NewTabPageHandler::HandleIntroMessageDismissed(const ListValue* args) {
PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
prefs->SetInteger(prefs::kNTP4IntroDisplayCount, kIntroDisplayMax + 1);
}
void NewTabPageHandler::HandleIntroMessageSeen(const ListValue* args) {
PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
int intro_displays = prefs->GetInteger(prefs::kNTP4IntroDisplayCount);
prefs->SetInteger(prefs::kNTP4IntroDisplayCount, intro_displays + 1);
}
// static
void NewTabPageHandler::RegisterUserPrefs(PrefService* prefs) {
// TODO(estade): should be syncable.
prefs->RegisterIntegerPref(prefs::kNTPShownPage, APPS_PAGE_ID,
PrefService::UNSYNCABLE_PREF);
prefs->RegisterIntegerPref(prefs::kNTP4IntroDisplayCount, 0,
PrefService::UNSYNCABLE_PREF);
}
// static
void NewTabPageHandler::GetLocalizedValues(Profile* profile,
DictionaryValue* values) {
if (!NewTabUI::NTP4Enabled())
return;
values->SetInteger("most_visited_page_id", MOST_VISITED_PAGE_ID);
values->SetInteger("apps_page_id", APPS_PAGE_ID);
values->SetInteger("bookmarks_page_id", BOOKMARKS_PAGE_ID);
PrefService* prefs = profile->GetPrefs();
int shown_page = prefs->GetInteger(prefs::kNTPShownPage);
values->SetInteger("shown_page_type", shown_page & ~INDEX_MASK);
values->SetInteger("shown_page_index", shown_page & INDEX_MASK);
int intro_displays = prefs->GetInteger(prefs::kNTP4IntroDisplayCount);
if (intro_displays <= kIntroDisplayMax) {
values->SetString("ntp4_intro_message",
l10n_util::GetStringUTF16(IDS_NTP4_INTRO_MESSAGE));
values->SetString("ntp4_intro_url", kNTP4IntroURL);
values->SetString("learn_more",
l10n_util::GetStringUTF16(IDS_LEARN_MORE));
}
}
// static
void NewTabPageHandler::DismissIntroMessage(PrefService* prefs) {
prefs->SetInteger(prefs::kNTP4IntroDisplayCount, kIntroDisplayMax + 1);
}
void NewTabPageHandler::NotifyPromoResourceChanged() {
NotificationService* service = NotificationService::current();
service->Notify(chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED,
Source<NewTabPageHandler>(this),
NotificationService::NoDetails());
}
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