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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_WEBAPPS_BROWSER_INSTALLABLE_INSTALLABLE_TASK_QUEUE_H_
#define COMPONENTS_WEBAPPS_BROWSER_INSTALLABLE_INSTALLABLE_TASK_QUEUE_H_
#include <deque>
#include "base/functional/callback.h"
#include "base/gtest_prod_util.h"
#include "components/webapps/browser/installable/installable_data.h"
#include "components/webapps/browser/installable/installable_params.h"
#include "components/webapps/browser/installable/installable_task.h"
namespace webapps {
// InstallableTaskQueue keeps track of pending tasks.
class InstallableTaskQueue {
public:
InstallableTaskQueue();
~InstallableTaskQueue();
// Adds task to the end of the active list of tasks to be processed.
void Add(std::unique_ptr<InstallableTask> task);
// Moves the current task from the main to the paused list.
void PauseCurrent();
// Moves all paused tasks to the main list.
void UnpauseAll();
// Reports whether there are any tasks in the main list.
bool HasCurrent() const;
// Reports whether there are any tasks in the paused list.
bool HasPaused() const;
// Returns the currently active task.
InstallableTask& Current();
// Advances to the next task.
void Next();
// Clears all tasks from the main and paused list, and then calls the callback
// on all of them with the given status code.
void ResetWithError(InstallableStatusCode code);
private:
friend class InstallableManagerBrowserTest;
friend class InstallableManagerOfflineCapabilityBrowserTest;
FRIEND_TEST_ALL_PREFIXES(InstallableManagerBrowserTest,
CheckLazyServiceWorkerPassesWhenWaiting);
FRIEND_TEST_ALL_PREFIXES(InstallableManagerBrowserTest,
CheckLazyServiceWorkerNoFetchHandlerFails);
FRIEND_TEST_ALL_PREFIXES(InstallableManagerOfflineCapabilityBrowserTest,
CheckLazyServiceWorkerPassesWhenWaiting);
// The list of <params, callback> pairs that have come from a call to
// InstallableManager::GetData.
std::deque<std::unique_ptr<InstallableTask>> tasks_;
// Tasks which are waiting indefinitely for a service worker to be detected.
std::deque<std::unique_ptr<InstallableTask>> paused_tasks_;
};
} // namespace webapps
#endif // COMPONENTS_WEBAPPS_BROWSER_INSTALLABLE_INSTALLABLE_TASK_QUEUE_H_
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