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/*
* Copyright (c) 2018 TOYOTA MOTOR CORPORATION
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef TMCAGLWM_POLICY_MANAGER_HPP
#define TMCAGLWM_POLICY_MANAGER_HPP
#include <functional>
#include <unordered_map>
#include <vector>
#include <queue>
struct json_object;
struct sd_event;
struct sd_event_source;
struct StmState;
class PolicyManager
{
public:
explicit PolicyManager();
~PolicyManager() = default;
using Handler = std::function<void(json_object *)>;
typedef struct
{
Handler onStateTransitioned;
Handler onError;
} CallbackTable;
int initialize();
void registerCallback(CallbackTable callback_table);
int setInputEventData(json_object *json_in);
int executeStateTransition();
void undoState();
// Do not use these functions
int transitionState(sd_event_source *source, void *data);
int timerEvent(sd_event_source *source, uint64_t usec, void *data);
private:
// Disable copy and move
PolicyManager(PolicyManager const &) = delete;
PolicyManager &operator=(PolicyManager const &) = delete;
PolicyManager(PolicyManager &&) = delete;
PolicyManager &operator=(PolicyManager &&) = delete;
typedef struct EventInfo
{
int event;
std::string role;
uint64_t delay;
} EventInfo;
typedef struct AreaState
{
std::string name;
std::string category;
std::string role;
} AreaState;
typedef std::vector<AreaState> AreaList;
typedef struct LayoutState
{
std::string name;
std::map<std::string, int> category_num;
AreaList area_list;
} LayoutState;
typedef struct LayerState
{
std::string name;
LayoutState layout_state;
bool changed;
} LayerState;
typedef std::vector<std::string> Areas;
typedef std::vector<std::string> Categories;
typedef std::vector<std::string> Roles;
// Convert map
std::unordered_map<std::string, int> eventname2no;
std::unordered_map<std::string, int> categoryname2no;
std::unordered_map<std::string, int> areaname2no;
std::unordered_map<std::string, std::string> role2category;
std::unordered_map<std::string, std::string> category2role;
std::unordered_map<std::string, Areas> category2areas;
std::unordered_map<std::string, Categories> layer2categories;
std::queue<EventInfo> event_info_queue;
std::map<int, struct sd_event_source *> event_source_list;
std::map<int, std::string> req_role_list;
CallbackTable callback;
std::unordered_map<std::string, LayerState> prv_layers;
std::unordered_map<std::string, LayerState> crr_layers;
std::unordered_map<std::string, LayoutState> default_layouts;
std::map<std::string, Roles> invisible_role_history;
void initializeState();
void initializeLayerState();
void updateState(int event_id, StmState crr_state);
void updateLayer(int event_id, StmState crr_state);
int updateLayout(int event_id, int layer_no,
std::string crr_layout_name, LayoutState &crr_layout_state);
void createOutputInformation(StmState crr_state, json_object **json_out);
int setStateTransitionProcessToSystemd(int event, uint64_t delay_ms, std::string role);
void pushInvisibleRoleHistory(std::string category, std::string role);
std::string popInvisibleRoleHistory(std::string category);
int loadRoleDb();
int loadStateDb();
void dumpLayerState(std::unordered_map<std::string, LayerState> &layers);
void dumpInvisibleRoleHistory();
void addStateToJson(const char *name, bool changed,
std::string state, json_object **json_out);
void addStateToJson(const char *layer_name, bool changed,
AreaList area_list, json_object **json_out);
const char *getStringFromJson(json_object *obj, const char *key);
int inputJsonFilie(const char *file, json_object **obj);
std::vector<std::string> parseString(std::string str, char delimiter);
std::string deleteSpace(std::string str);
static const char *kDefaultRoleDb;
static const char *kDefaultStateDb;
};
#endif // TMCAGLWM_POLICY_MANAGER_HPP
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