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// Copyright (c) 2012 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.
// MediaFileSystemRegistry implementation.
#include "chrome/browser/media_gallery/media_file_system_registry.h"
#include <set>
#include "base/path_service.h"
#include "base/sys_string_conversions.h"
#include "chrome/common/chrome_paths.h"
#include "content/public/browser/browser_thread.h"
#include "webkit/fileapi/isolated_context.h"
namespace chrome {
static base::LazyInstance<MediaFileSystemRegistry>::Leaky
g_media_file_system_registry = LAZY_INSTANCE_INITIALIZER;
using content::BrowserThread;
using fileapi::IsolatedContext;
// static
MediaFileSystemRegistry* MediaFileSystemRegistry::GetInstance() {
return g_media_file_system_registry.Pointer();
}
std::vector<MediaFileSystemRegistry::MediaFSIDAndPath>
MediaFileSystemRegistry::GetMediaFileSystems() const {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
std::vector<MediaFSIDAndPath> results;
for (MediaPathToFSIDMap::const_iterator it = media_fs_map_.begin();
it != media_fs_map_.end();
++it) {
const FilePath path = it->first;
const std::string fsid = it->second;
results.push_back(std::make_pair(fsid, path));
}
return results;
}
MediaFileSystemRegistry::MediaFileSystemRegistry() {
FilePath pictures_path;
if (PathService::Get(chrome::DIR_USER_PICTURES, &pictures_path)) {
RegisterPathAsFileSystem(pictures_path);
}
}
MediaFileSystemRegistry::~MediaFileSystemRegistry() {
}
void MediaFileSystemRegistry::RegisterPathAsFileSystem(const FilePath& path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Sanity checks for |path|.
CHECK(path.IsAbsolute());
CHECK(!path.ReferencesParent());
// Make sure |path| does not refer to '/' on Unix.
// TODO(thestig) Check how BaseName() works for say, 'C:\' on Windows.
CHECK(!path.BaseName().IsAbsolute());
CHECK(!path.BaseName().empty());
std::set<FilePath> fileset;
fileset.insert(path);
const std::string fsid =
IsolatedContext::GetInstance()->RegisterIsolatedFileSystem(fileset);
CHECK(!fsid.empty());
media_fs_map_.insert(std::make_pair(path, fsid));
}
} // namespace chrome
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