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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.
#include "chrome/browser/search/local_ntp_source.h"
#include "base/json/json_string_value_serializer.h"
#include "base/logging.h"
#include "base/memory/ref_counted_memory.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
#include "chrome/browser/search/instant_io_context.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/search_engines/template_url_prepopulate_data.h"
#include "chrome/browser/search_engines/template_url_service.h"
#include "chrome/browser/search_engines/template_url_service_factory.h"
#include "chrome/common/url_constants.h"
#include "grit/browser_resources.h"
#include "grit/generated_resources.h"
#include "grit/ui_resources.h"
#include "net/url_request/url_request.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/webui/jstemplate_builder.h"
#include "url/gurl.h"
namespace {
// Signifies a locally constructed resource, i.e. not from grit/.
const int kLocalResource = -1;
const char kConfigDataFilename[] = "config.js";
const struct Resource{
const char* filename;
int identifier;
const char* mime_type;
} kResources[] = {
{ "local-ntp.html", IDR_LOCAL_NTP_HTML, "text/html" },
{ "local-ntp.js", IDR_LOCAL_NTP_JS, "application/javascript" },
{ kConfigDataFilename, kLocalResource, "application/javascript" },
{ "local-ntp.css", IDR_LOCAL_NTP_CSS, "text/css" },
{ "images/close_2.png", IDR_CLOSE_2, "image/png" },
{ "images/close_2_hover.png", IDR_CLOSE_2_H, "image/png" },
{ "images/close_2_active.png", IDR_CLOSE_2_P, "image/png" },
{ "images/close_2_white.png", IDR_CLOSE_2_MASK, "image/png" },
{ "images/2x/google_logo.png",
IDR_LOCAL_NTP_IMAGES_2X_LOGO_PNG, "image/png" },
{ "images/2x/white_google_logo.png",
IDR_LOCAL_NTP_IMAGES_2X_WHITE_LOGO_PNG, "image/png" },
};
// Strips any query parameters from the specified path.
std::string StripParameters(const std::string& path) {
return path.substr(0, path.find("?"));
}
bool DefaultSearchProviderIsGoogle(Profile* profile) {
if (!profile)
return false;
TemplateURLService* template_url_service =
TemplateURLServiceFactory::GetForProfile(profile);
if (!template_url_service)
return false;
const TemplateURL* default_provider =
template_url_service->GetDefaultSearchProvider();
return default_provider &&
(TemplateURLPrepopulateData::GetEngineType(*default_provider) ==
SEARCH_ENGINE_GOOGLE);
}
// Adds a localized string keyed by resource id to the dictionary.
void AddString(base::DictionaryValue* dictionary,
const std::string& key,
int resource_id) {
dictionary->SetString(key, l10n_util::GetStringUTF16(resource_id));
}
// Populates |translated_strings| dictionary for the local NTP.
scoped_ptr<DictionaryValue> GetTranslatedStrings() {
scoped_ptr<base::DictionaryValue> translated_strings(
new base::DictionaryValue());
if (chrome::ShouldShowRecentTabsOnNTP())
AddString(translated_strings.get(), "recentTabs", IDS_RECENT_TABS_MENU);
AddString(translated_strings.get(), "thumbnailRemovedNotification",
IDS_NEW_TAB_THUMBNAIL_REMOVED_NOTIFICATION);
AddString(translated_strings.get(), "removeThumbnailTooltip",
IDS_NEW_TAB_REMOVE_THUMBNAIL_TOOLTIP);
AddString(translated_strings.get(), "undoThumbnailRemove",
IDS_NEW_TAB_UNDO_THUMBNAIL_REMOVE);
AddString(translated_strings.get(), "restoreThumbnailsShort",
IDS_NEW_TAB_RESTORE_THUMBNAILS_SHORT_LINK);
AddString(translated_strings.get(), "attributionIntro",
IDS_NEW_TAB_ATTRIBUTION_INTRO);
AddString(translated_strings.get(), "title", IDS_NEW_TAB_TITLE);
return translated_strings.Pass();
}
// Returns a JS dictionary of configuration data for the local NTP.
std::string GetConfigData(Profile* profile) {
base::DictionaryValue config_data;
config_data.Set("translatedStrings", GetTranslatedStrings().release());
config_data.SetBoolean("isGooglePage",
DefaultSearchProviderIsGoogle(profile));
// Serialize the dictionary.
std::string js_text;
JSONStringValueSerializer serializer(&js_text);
serializer.Serialize(config_data);
std::string config_data_js;
config_data_js.append("var configData = ");
config_data_js.append(js_text);
config_data_js.append(";");
return config_data_js;
}
} // namespace
LocalNtpSource::LocalNtpSource(Profile* profile) : profile_(profile) {
}
LocalNtpSource::~LocalNtpSource() {
}
std::string LocalNtpSource::GetSource() const {
return chrome::kChromeSearchLocalNtpHost;
}
void LocalNtpSource::StartDataRequest(
const std::string& path,
int render_process_id,
int render_view_id,
const content::URLDataSource::GotDataCallback& callback) {
const std::string stripped_path = StripParameters(path);
if (stripped_path == kConfigDataFilename) {
std::string config_data_js = GetConfigData(profile_);
callback.Run(base::RefCountedString::TakeString(&config_data_js));
return;
}
for (size_t i = 0; i < arraysize(kResources); ++i) {
if (stripped_path == kResources[i].filename) {
scoped_refptr<base::RefCountedStaticMemory> response(
ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
kResources[i].identifier));
callback.Run(response.get());
return;
}
}
callback.Run(NULL);
};
std::string LocalNtpSource::GetMimeType(
const std::string& path) const {
const std::string stripped_path = StripParameters(path);
for (size_t i = 0; i < arraysize(kResources); ++i) {
if (stripped_path == kResources[i].filename)
return kResources[i].mime_type;
}
return std::string();
}
bool LocalNtpSource::ShouldServiceRequest(
const net::URLRequest* request) const {
DCHECK(request->url().host() == chrome::kChromeSearchLocalNtpHost);
if (!InstantIOContext::ShouldServiceRequest(request))
return false;
if (request->url().SchemeIs(chrome::kChromeSearchScheme)) {
DCHECK(StartsWithASCII(request->url().path(), "/", true));
std::string filename = request->url().path().substr(1);
for (size_t i = 0; i < arraysize(kResources); ++i) {
if (filename == kResources[i].filename)
return true;
}
}
return false;
}
std::string LocalNtpSource::GetContentSecurityPolicyFrameSrc() const {
// Allow embedding of most visited iframes.
return base::StringPrintf("frame-src %s;",
chrome::kChromeSearchMostVisitedUrl);
}
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