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/*
* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Nick Dedekind <nick.dedekind@canonical.com>
*/
#ifndef MIR_CLIENT_MIR_PROMPT_SESSION_H_
#define MIR_CLIENT_MIR_PROMPT_SESSION_H_
#include "mir_toolkit/mir_client_library.h"
#include "mir_protobuf.pb.h"
#include "mir_wait_handle.h"
#include <mutex>
#include <memory>
#include <atomic>
namespace mir
{
/// The client-side library implementation namespace
namespace client
{
class EventHandlerRegister;
}
}
struct MirPromptSession
{
public:
MirPromptSession(mir::protobuf::DisplayServer& server,
std::shared_ptr<mir::client::EventHandlerRegister> const& event_handler_register);
~MirPromptSession();
MirWaitHandle* start(pid_t application_pid, mir_prompt_session_callback callback, void* context);
MirWaitHandle* stop(mir_prompt_session_callback callback, void* context);
MirWaitHandle* new_fds_for_prompt_providers(
unsigned int no_of_fds,
mir_client_fd_callback callback,
void * context);
void register_prompt_session_state_change_callback(mir_prompt_session_state_change_callback callback, void* context);
char const* get_error_message();
private:
std::mutex mutable mutex; // Protects parameters, wait_handles & results
mir::protobuf::DisplayServer& server;
mir::protobuf::PromptSessionParameters parameters;
mir::protobuf::Void add_result;
mir::protobuf::Void protobuf_void;
mir::protobuf::SocketFD socket_fd_response;
std::shared_ptr<mir::client::EventHandlerRegister> const event_handler_register;
int const event_handler_register_id;
MirWaitHandle start_wait_handle;
MirWaitHandle stop_wait_handle;
MirWaitHandle fds_for_prompt_providers_wait_handle;
std::atomic<MirPromptSessionState> state;
std::mutex mutable session_mutex; // Protects session
mir::protobuf::Void session;
std::mutex mutable event_handler_mutex; // Need another mutex for callback access to members
std::function<void(MirPromptSessionState)> handle_prompt_session_state_change;
void set_state(MirPromptSessionState new_state);
void done_start(mir_prompt_session_callback callback, void* context);
void done_stop(mir_prompt_session_callback callback, void* context);
void done_fds_for_prompt_providers(mir_client_fd_callback callback, void* context);
MirPromptSession(MirPromptSession const&) = delete;
MirPromptSession& operator=(MirPromptSession const&) = delete;
};
#endif /* MIR_CLIENT_MIR_PROMPT_SESSION_H_ */
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