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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/instant_service.h"
#include "base/strings/string_number_conversions.h"
#include "chrome/browser/history/history_notifications.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/instant_io_context.h"
#include "chrome/browser/search/instant_service_factory.h"
#include "chrome/browser/search/local_omnibox_popup_source.h"
#include "chrome/browser/ui/webui/favicon_source.h"
#include "chrome/browser/ui/webui/ntp/thumbnail_source.h"
#include "chrome/browser/ui/webui/theme_source.h"
#include "chrome/common/chrome_notification_types.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/url_data_source.h"
#include "googleurl/src/gurl.h"
#include "net/url_request/url_request.h"
using content::BrowserThread;
InstantService::InstantService(Profile* profile)
: profile_(profile),
most_visited_item_cache_(kMaxInstantMostVisitedItemCacheSize) {
// Stub for unit tests.
if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
return;
registrar_.Add(this,
content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
content::NotificationService::AllSources());
instant_io_context_ = new InstantIOContext();
if (profile_ && profile_->GetResourceContext()) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&InstantIOContext::SetUserDataOnIO,
profile->GetResourceContext(), instant_io_context_));
}
// Set up the data sources that Instant uses on the NTP.
#if defined(ENABLE_THEMES)
content::URLDataSource::Add(profile, new ThemeSource(profile));
#endif
content::URLDataSource::Add(profile, new ThumbnailSource(profile));
content::URLDataSource::Add(profile, new FaviconSource(
profile, FaviconSource::FAVICON));
content::URLDataSource::Add(profile, new LocalOmniboxPopupSource());
}
InstantService::~InstantService() {
}
// static
const std::string InstantService::MaybeTranslateInstantPathOnUI(
Profile* profile, const std::string& path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
InstantService* instant_service =
InstantServiceFactory::GetForProfile(profile);
if (!instant_service)
return path;
InstantRestrictedID restricted_id = 0;
DCHECK_EQ(sizeof(InstantRestrictedID), sizeof(int));
if (base::StringToInt(path, &restricted_id)) {
InstantMostVisitedItem item;
if (instant_service->GetMostVisitedItemForID(restricted_id, &item))
return item.url.spec();
}
return path;
}
const std::string InstantService::MaybeTranslateInstantPathOnIO(
const net::URLRequest* request, const std::string& path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
InstantRestrictedID restricted_id = 0;
DCHECK_EQ(sizeof(InstantRestrictedID), sizeof(int));
if (base::StringToInt(path, &restricted_id)) {
GURL url;
if (InstantIOContext::GetURLForMostVisitedItemID(request,
restricted_id,
&url)) {
return url.spec();
}
}
return path;
}
// static
bool InstantService::IsInstantPath(const GURL& url) {
// Strip leading slash.
std::string path = url.path().substr(1);
// Check that path is of Most Visited item ID form.
InstantRestrictedID dummy = 0;
return base::StringToInt(path, &dummy);
}
void InstantService::AddInstantProcess(int process_id) {
process_ids_.insert(process_id);
if (instant_io_context_) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&InstantIOContext::AddInstantProcessOnIO,
instant_io_context_, process_id));
}
}
bool InstantService::IsInstantProcess(int process_id) const {
return process_ids_.find(process_id) != process_ids_.end();
}
void InstantService::AddMostVisitedItems(
const std::vector<InstantMostVisitedItem>& items) {
most_visited_item_cache_.AddItems(items);
// Post task to the IO thread to copy the data.
if (instant_io_context_) {
std::vector<InstantMostVisitedItemIDPair> items;
most_visited_item_cache_.GetCurrentItems(&items);
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&InstantIOContext::AddMostVisitedItemsOnIO,
instant_io_context_,
items));
}
}
void InstantService::GetCurrentMostVisitedItems(
std::vector<InstantMostVisitedItemIDPair>* items) const {
most_visited_item_cache_.GetCurrentItems(items);
}
bool InstantService::GetMostVisitedItemForID(
InstantRestrictedID most_visited_item_id,
InstantMostVisitedItem* item) const {
return most_visited_item_cache_.GetItemWithRestrictedID(
most_visited_item_id, item);
}
void InstantService::Shutdown() {
process_ids_.clear();
if (instant_io_context_) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&InstantIOContext::ClearInstantProcessesOnIO,
instant_io_context_));
}
instant_io_context_ = NULL;
}
void InstantService::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: {
int process_id =
content::Source<content::RenderProcessHost>(source)->GetID();
process_ids_.erase(process_id);
if (instant_io_context_) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&InstantIOContext::RemoveInstantProcessOnIO,
instant_io_context_, process_id));
}
break;
}
default:
NOTREACHED() << "Unexpected notification type in InstantService.";
}
}
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