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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/history/top_sites_backend.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/history/top_sites_database.h"
#include "chrome/common/cancelable_task_tracker.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace history {
TopSitesBackend::TopSitesBackend()
: db_(new TopSitesDatabase()) {
}
void TopSitesBackend::Init(const base::FilePath& path) {
db_path_ = path;
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&TopSitesBackend::InitDBOnDBThread, this, path));
}
void TopSitesBackend::Shutdown() {
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&TopSitesBackend::ShutdownDBOnDBThread, this));
}
void TopSitesBackend::GetMostVisitedThumbnails(
const GetMostVisitedThumbnailsCallback& callback,
CancelableTaskTracker* tracker) {
scoped_refptr<MostVisitedThumbnails> thumbnails = new MostVisitedThumbnails();
bool* need_history_migration = new bool(false);
tracker->PostTaskAndReply(
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::DB),
FROM_HERE,
base::Bind(&TopSitesBackend::GetMostVisitedThumbnailsOnDBThread,
this, thumbnails, need_history_migration),
base::Bind(callback, thumbnails, base::Owned(need_history_migration)));
}
void TopSitesBackend::UpdateTopSites(const TopSitesDelta& delta) {
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&TopSitesBackend::UpdateTopSitesOnDBThread, this, delta));
}
void TopSitesBackend::SetPageThumbnail(const MostVisitedURL& url,
int url_rank,
const Images& thumbnail) {
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&TopSitesBackend::SetPageThumbnailOnDBThread, this, url,
url_rank, thumbnail));
}
void TopSitesBackend::ResetDatabase() {
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
base::Bind(&TopSitesBackend::ResetDatabaseOnDBThread, this, db_path_));
}
void TopSitesBackend::DoEmptyRequest(const base::Closure& reply,
CancelableTaskTracker* tracker) {
tracker->PostTaskAndReply(
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::DB),
FROM_HERE,
base::Bind(&base::DoNothing),
reply);
}
TopSitesBackend::~TopSitesBackend() {
DCHECK(!db_.get()); // Shutdown should have happened first (which results in
// nulling out db).
}
void TopSitesBackend::InitDBOnDBThread(const base::FilePath& path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
if (!db_->Init(path)) {
NOTREACHED() << "Failed to initialize database.";
db_.reset();
}
}
void TopSitesBackend::ShutdownDBOnDBThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
db_.reset();
}
void TopSitesBackend::GetMostVisitedThumbnailsOnDBThread(
scoped_refptr<MostVisitedThumbnails> thumbnails,
bool* need_history_migration) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
*need_history_migration = false;
if (db_.get()) {
db_->GetPageThumbnails(&(thumbnails->most_visited),
&(thumbnails->url_to_images_map));
*need_history_migration = db_->may_need_history_migration();
}
}
void TopSitesBackend::UpdateTopSitesOnDBThread(const TopSitesDelta& delta) {
if (!db_.get())
return;
for (size_t i = 0; i < delta.deleted.size(); ++i)
db_->RemoveURL(delta.deleted[i]);
for (size_t i = 0; i < delta.added.size(); ++i)
db_->SetPageThumbnail(delta.added[i].url, delta.added[i].rank, Images());
for (size_t i = 0; i < delta.moved.size(); ++i)
db_->UpdatePageRank(delta.moved[i].url, delta.moved[i].rank);
}
void TopSitesBackend::SetPageThumbnailOnDBThread(const MostVisitedURL& url,
int url_rank,
const Images& thumbnail) {
if (!db_.get())
return;
db_->SetPageThumbnail(url, url_rank, thumbnail);
}
void TopSitesBackend::ResetDatabaseOnDBThread(const base::FilePath& file_path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
db_.reset(NULL);
file_util::Delete(db_path_, false);
db_.reset(new TopSitesDatabase());
InitDBOnDBThread(db_path_);
}
} // namespace history
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