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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_TERMINAL_PROVIDER_REGISTRY_H_
#define CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_TERMINAL_PROVIDER_REGISTRY_H_
#include "base/containers/flat_map.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ash/guest_os/guest_id.h"
class Profile;
namespace guest_os {
class GuestOsTerminalProvider;
class GuestOsTerminalProviderRegistry {
public:
// Id used to reference a specific provider within the registry. Note: These
// IDs are not stable across restarts and there's no correlation between a
// provider's ID and its VM/Guest, or between different providers.
// Use int and start at 0 so we can serialise it to json without any
// conversions.
using Id = int;
// Gets a list of `Id`s for all provider's in the registry.
std::vector<Id> List();
explicit GuestOsTerminalProviderRegistry(Profile* profile);
~GuestOsTerminalProviderRegistry();
GuestOsTerminalProviderRegistry(const GuestOsTerminalProviderRegistry&) =
delete;
GuestOsTerminalProviderRegistry& operator=(
const GuestOsTerminalProviderRegistry&) = delete;
// Returns the provider with the specified `id`. Returns nullptr if the
// provider doesn't exist.
GuestOsTerminalProvider* Get(Id id) const;
// Returns the provider with the specified `id`. Returns nullptr if the
// provider doesn't exist. Convenience method which converts std::string to
// Id for you.
GuestOsTerminalProvider* Get(const std::string& id) const;
// Returns the provider with the specified `id`. Returns nullptr if the
// provider doesn't exist. Searches the registry for the first provider for
// the specified guest.
GuestOsTerminalProvider* Get(const guest_os::GuestId& id) const;
// Registers a new provider with the registry. The registry takes ownership of
// the provider, holding on to it until it's unregistered. Returns the id of
// the newly-registered provider.
Id Register(std::unique_ptr<GuestOsTerminalProvider> provider);
// The terminal reads configuration data from prefs, which means changes to
// provider properties at runtime aren't automatically reflected in the
// terminal window. This method updates prefs to match the current provider
// state.
void SyncPrefs(Id provider);
// Removes a provider from the registry, returning the provider. The specified
// provider must be in the registry.
std::unique_ptr<GuestOsTerminalProvider> Unregister(Id provider);
private:
raw_ptr<Profile> profile_;
Id next_id_ = 0;
base::flat_map<Id, std::unique_ptr<GuestOsTerminalProvider>> providers_;
};
} // namespace guest_os
#endif // CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_TERMINAL_PROVIDER_REGISTRY_H_
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