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// Copyright 2015 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_MEDIA_ROUTER_BROWSER_ISSUE_MANAGER_H_
#define COMPONENTS_MEDIA_ROUTER_BROWSER_ISSUE_MANAGER_H_
#include "base/containers/flat_map.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/observer_list.h"
#include "base/sequence_checker.h"
#include "components/media_router/browser/issues_observer.h"
#include "components/media_router/common/issue.h"
namespace media_router {
// IssueManager keeps track of current issues related to casting
// connectivity and quality. It lives on the UI thread.
class IssueManager {
public:
IssueManager();
IssueManager(const IssueManager&) = delete;
IssueManager& operator=(const IssueManager&) = delete;
~IssueManager();
// Returns the amount of time before |issue_info| is dismissed after it is
// added to the IssueManager.
static base::TimeDelta GetAutoDismissTimeout(const IssueInfo& issue_info);
// Adds an issue. No-ops if the issue already exists.
// |issue_info|: Info of issue to be added.
void AddIssue(const IssueInfo& issue_info);
// Adds an issue for local discovery permission rejected error.
void AddPermissionRejectedIssue();
// Removes an issue when user has noted it is resolved.
// |issue_id|: Issue::Id of the issue to be removed.
void ClearIssue(const Issue::Id& issue_id);
// Clears all issues.
void ClearAllIssues();
// Clears the top issue if it belongs to the given sink_id.
void ClearTopIssueForSink(const MediaSink::Id& sink_id);
// Registers an issue observer |observer|. The observer will be triggered
// when the highest priority issue changes.
// If there is already an observer registered with this instance, do nothing.
// Does not assume ownership of |observer|.
// |observer|: IssuesObserver to be registered.
void RegisterObserver(IssuesObserver* observer);
// Unregisters |observer| from |issues_observers_|.
// |observer|: IssuesObserver to be unregistered.
void UnregisterObserver(IssuesObserver* observer);
private:
// Checks if the current top issue has changed. Updates |top_issue_|.
// If |top_issue_| has changed, observers in |issues_observers_| will be
// notified of the new top issue.
void MaybeUpdateTopIssue();
base::flat_map<Issue::Id, Issue> issues_map_;
// IssueObserver instances are not owned by the manager.
base::ObserverList<IssuesObserver>::Unchecked issues_observers_;
// Pointer to the top Issue in `|issues_map_|, or |nullopt| if there are no
// issues.
std::optional<Issue::Id> top_issue_id_ = std::nullopt;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<IssueManager> weak_ptr_factory_{this};
};
} // namespace media_router
#endif // COMPONENTS_MEDIA_ROUTER_BROWSER_ISSUE_MANAGER_H_
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