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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/file_system_access/file_system_access_change_source.h"
#include "base/functional/callback.h"
namespace content {
namespace {
storage::FileSystemURL ToFileSystemURL(storage::FileSystemContext& context,
const storage::FileSystemURL& root_url,
const base::FilePath& relative_path) {
auto result = context.CreateCrackedFileSystemURL(
root_url.storage_key(), root_url.mount_type(),
root_url.virtual_path().Append(relative_path));
if (root_url.bucket()) {
result.SetBucket(root_url.bucket().value());
}
return result;
}
} // namespace
FileSystemAccessChangeSource::FileSystemAccessChangeSource(
FileSystemAccessWatchScope scope,
scoped_refptr<storage::FileSystemContext> file_system_context)
: scope_(std::move(scope)),
file_system_context_(std::move(file_system_context)) {}
FileSystemAccessChangeSource::~FileSystemAccessChangeSource() {
for (auto& observer : observers_) {
observer.OnSourceBeingDestroyed(this);
}
}
void FileSystemAccessChangeSource::AddObserver(RawChangeObserver* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
observers_.AddObserver(observer);
}
void FileSystemAccessChangeSource::RemoveObserver(RawChangeObserver* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
observers_.RemoveObserver(observer);
}
void FileSystemAccessChangeSource::EnsureInitialized(
base::OnceCallback<void(blink::mojom::FileSystemAccessErrorPtr)>
on_source_initialized) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (initialization_result_.has_value()) {
CHECK(initialization_callbacks_.empty());
std::move(on_source_initialized).Run(initialization_result_->Clone());
return;
}
initialization_callbacks_.push_back(std::move(on_source_initialized));
if (initialization_callbacks_.size() > 1) {
return;
}
Initialize(base::BindOnce(&FileSystemAccessChangeSource::DidInitialize,
weak_factory_.GetWeakPtr()));
}
void FileSystemAccessChangeSource::DidInitialize(
blink::mojom::FileSystemAccessErrorPtr result) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!initialization_result_.has_value());
CHECK(!initialization_callbacks_.empty());
initialization_result_ = std::move(result);
// Move the callbacks to the stack since they may cause |this| to be deleted.
auto initialization_callbacks = std::move(initialization_callbacks_);
initialization_callbacks_.clear();
for (auto& callback : initialization_callbacks) {
std::move(callback).Run(initialization_result_->Clone());
}
}
base::WeakPtr<FileSystemAccessChangeSource>
FileSystemAccessChangeSource::AsWeakPtr() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return weak_factory_.GetWeakPtr();
}
void FileSystemAccessChangeSource::NotifyOfChange(
const storage::FileSystemURL& changed_url,
bool error) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(scope().Contains(changed_url));
CHECK(changed_url.is_valid());
for (RawChangeObserver& observer : observers_) {
observer.OnRawChange(changed_url, error);
}
}
void FileSystemAccessChangeSource::NotifyOfChange(
const base::FilePath& relative_path,
bool error) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!relative_path.IsAbsolute());
CHECK(!relative_path.ReferencesParent());
const storage::FileSystemURL& root_url = scope().root_url();
CHECK(root_url.is_valid());
for (RawChangeObserver& observer : observers_) {
observer.OnRawChange(
ToFileSystemURL(*file_system_context_, root_url, relative_path), error);
}
}
} // namespace content
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