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// Copyright (c) 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.
#include "chrome/browser/history/top_sites.h"
#include "base/metrics/field_trial.h"
#include "base/strings/string_util.h"
#include "chrome/browser/history/top_sites_impl.h"
#include "chrome/browser/history/top_sites_likely_impl.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "grit/locale_settings.h"
#include "grit/theme_resources.h"
namespace history {
namespace {
// Constants for the most visited tile placement field trial.
// ex:
// "OneEightGroup_Flipped" --> Will cause tile 1 and 8 to be flipped.
// "OneEightGroup_NoChange" --> Will not flip anything.
//
// See field trial config (MostVisitedTilePlacement.json) for details.
const char kMostVisitedFieldTrialName[] = "MostVisitedTilePlacement";
const char kOneEightGroupPrefix[] = "OneEight";
const char kOneFourGroupPrefix[] = "OneFour";
const char kFlippedSuffix[] = "Flipped";
} // namespace
const TopSites::PrepopulatedPage kPrepopulatedPages[] = {
#if defined(OS_ANDROID)
{ IDS_MOBILE_WELCOME_URL, IDS_NEW_TAB_CHROME_WELCOME_PAGE_TITLE,
IDR_PRODUCT_LOGO_16, IDR_NEWTAB_CHROME_WELCOME_PAGE_THUMBNAIL,
SkColorSetRGB(0, 147, 60) }
#else
{ IDS_CHROME_WELCOME_URL, IDS_NEW_TAB_CHROME_WELCOME_PAGE_TITLE,
IDR_PRODUCT_LOGO_16, IDR_NEWTAB_CHROME_WELCOME_PAGE_THUMBNAIL,
SkColorSetRGB(0, 147, 60) },
#endif
#if !defined(OS_ANDROID)
{ IDS_WEBSTORE_URL, IDS_EXTENSION_WEB_STORE_TITLE,
IDR_WEBSTORE_ICON_16, IDR_NEWTAB_WEBSTORE_THUMBNAIL,
SkColorSetRGB(63, 132, 197) }
#endif
};
// static
TopSites* TopSites::Create(Profile* profile, const base::FilePath& db_name) {
if (base::FieldTrialList::FindFullName("MostLikely") == "Likely_Client") {
// Experimental group. Enabled through a command-line flag.
TopSitesLikelyImpl* top_sites_likely_impl = new TopSitesLikelyImpl(profile);
top_sites_likely_impl->Init(db_name);
return top_sites_likely_impl;
}
TopSitesImpl* top_sites_impl = new TopSitesImpl(profile);
top_sites_impl->Init(db_name);
return top_sites_impl;
}
// static
void TopSites::MaybeShuffle(MostVisitedURLList* data) {
const std::string group_name =
base::FieldTrialList::FindFullName(kMostVisitedFieldTrialName);
// Depending on the study group of the client, we might flip the 1st and 4th
// tiles, or the 1st and 8th, or do nothing.
if (EndsWith(group_name, kFlippedSuffix, true)) {
size_t index_to_flip = 0;
if (StartsWithASCII(group_name, kOneEightGroupPrefix, true) &&
data->size() >= 8) {
index_to_flip = 7;
} else if (StartsWithASCII(group_name, kOneFourGroupPrefix, true) &&
data->size() >= 4) {
index_to_flip = 3;
}
if (data->empty() || (*data)[index_to_flip].url.is_empty())
return;
std::swap((*data)[0], (*data)[index_to_flip]);
}
}
} // namespace history
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