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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/download/public/common/simple_download_manager_coordinator.h"
#include <utility>
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "components/download/public/common/all_download_event_notifier.h"
#include "components/download/public/common/download_item.h"
#include "components/download/public/common/download_stats.h"
#include "components/download/public/common/simple_download_manager.h"
namespace download {
SimpleDownloadManagerCoordinator::SimpleDownloadManagerCoordinator(
const DownloadWhenFullManagerStartsCallBack&
download_when_full_manager_starts_cb)
: simple_download_manager_(nullptr),
has_all_history_downloads_(false),
current_manager_has_all_history_downloads_(false),
initialized_(false),
download_when_full_manager_starts_cb_(
download_when_full_manager_starts_cb) {}
SimpleDownloadManagerCoordinator::~SimpleDownloadManagerCoordinator() {
if (simple_download_manager_)
simple_download_manager_->RemoveObserver(this);
for (auto& observer : observers_)
observer.OnManagerGoingDown(this);
}
void SimpleDownloadManagerCoordinator::SetSimpleDownloadManager(
SimpleDownloadManager* simple_download_manager,
bool manages_all_history_downloads) {
DCHECK(simple_download_manager);
// Make sure we won't transition from a full manager to a in-progress manager,
DCHECK(!current_manager_has_all_history_downloads_ ||
manages_all_history_downloads);
if (simple_download_manager_)
simple_download_manager_->RemoveObserver(this);
current_manager_has_all_history_downloads_ = manages_all_history_downloads;
simple_download_manager_ = simple_download_manager;
simple_download_manager_->AddObserver(this);
}
void SimpleDownloadManagerCoordinator::AddObserver(Observer* observer) {
DCHECK(observer);
observers_.AddObserver(observer);
if (initialized_)
observer->OnDownloadsInitialized(!has_all_history_downloads_);
}
void SimpleDownloadManagerCoordinator::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void SimpleDownloadManagerCoordinator::DownloadUrl(
std::unique_ptr<DownloadUrlParameters> parameters) {
bool result = simple_download_manager_
? simple_download_manager_->CanDownload(parameters.get())
: false;
if (result) {
simple_download_manager_->DownloadUrl(std::move(parameters));
return;
}
if (!current_manager_has_all_history_downloads_)
download_when_full_manager_starts_cb_.Run(std::move(parameters));
}
void SimpleDownloadManagerCoordinator::GetAllDownloads(
std::vector<raw_ptr<DownloadItem, VectorExperimental>>* downloads) {
if (simple_download_manager_) {
simple_download_manager_->GetAllDownloads(downloads);
simple_download_manager_->GetUninitializedActiveDownloadsIfAny(downloads);
}
}
DownloadItem* SimpleDownloadManagerCoordinator::GetDownloadByGuid(
const std::string& guid) {
if (simple_download_manager_)
return simple_download_manager_->GetDownloadByGuid(guid);
return nullptr;
}
void SimpleDownloadManagerCoordinator::OnDownloadsInitialized() {
initialized_ = true;
has_all_history_downloads_ = current_manager_has_all_history_downloads_;
for (auto& observer : observers_)
observer.OnDownloadsInitialized(!has_all_history_downloads_);
}
void SimpleDownloadManagerCoordinator::OnManagerGoingDown() {
simple_download_manager_ = nullptr;
}
void SimpleDownloadManagerCoordinator::OnDownloadCreated(DownloadItem* item) {
for (auto& observer : observers_)
observer.OnDownloadCreated(item);
}
AllDownloadEventNotifier* SimpleDownloadManagerCoordinator::GetNotifier() {
if (!notifier_)
notifier_ = std::make_unique<AllDownloadEventNotifier>(this);
return notifier_.get();
}
void SimpleDownloadManagerCoordinator::CheckForExternallyRemovedDownloads() {
simple_download_manager_->CheckForHistoryFilesRemoval();
}
} // namespace download
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