Move global variable to PolicyManager member
[apps/agl-service-windowmanager.git] / src / policy_manager / policy_manager.cpp
index 0af8398..347f810 100644 (file)
@@ -31,46 +31,29 @@ extern "C" {
 }
 } // namespace stm
 
-
 namespace pm {
-typedef struct AreaState {
-    std::string name;
-    std::string category;
-    std::string role;
-} AreaState;
-
-typedef struct LayoutState {
-    std::string name;
-    std::map<std::string, int> category_num;
-//    int category_num[stm::gStmCategoryNoNum];
-    std::vector<AreaState> area_list;
-    std::map<std::string, std::string> last_invisibled_role;
-} LayoutState;
-
-typedef struct LayerState {
-    std::string name;
-    LayoutState layout_state;
-} LayerState;
-
-struct sd_event* event_loop;
-std::map<int, struct sd_event_source*> event_source_list;
-std::map<int, std::string> g_event_info_list;
-PolicyManager::CallbackTable callback;
-
-std::unordered_map<std::string, LayerState> g_prv_layers;
-std::unordered_map<std::string, LayerState> g_crr_layers;
-std::unordered_map<std::string, LayerState> g_prv_layers_car_stop;
-std::unordered_map<std::string, LayoutState> g_default_layouts;
+static PolicyManager *g_context;
+
+static int transitionStateWrapper(sd_event_source *source, void *data) {
+    int ret = pm::g_context->transitionState(source, data);
+    return ret;
+}
+
+static int timerEventWrapper(sd_event_source *source, uint64_t usec, void *data) {
+    int ret = pm::g_context->timerEvent(source, usec, data);
+    return ret;
+}
+
 }  // namespace pm
 
 
 PolicyManager::PolicyManager() :
-  eventname2no_(),
-  categoryname2no_(),
-  areaname2no_(),
-  role2category_(),
-  category2role_(),
-  role2defaultarea_()
+  eventname2no(),
+  categoryname2no(),
+  areaname2no(),
+  role2category(),
+  category2role(),
+  role2defaultarea()
 {
     HMI_DEBUG("wm:pm", "Call");
 }
@@ -81,19 +64,19 @@ int PolicyManager::initialize() {
     int ret = 0;
 
     // Create convert map
-    for (unsigned int i=0; i<STM_NUM_EVT; i++) {
-        HMI_DEBUG("wm:pm", "event name:%s no:%d", stm::gStmEventName[i], stm::gStmEventNo[i]);
-        this->eventname2no_[stm::gStmEventName[i]] = stm::gStmEventNo[i];
+    for (int i = stm::StmEvtNoMin; i <= stm::StmEvtNoMax; i++) {
+        HMI_DEBUG("wm:pm", "event name:%s no:%d", stm::kStmEventName[i], i);
+        this->eventname2no[stm::kStmEventName[i]] = i;
     }
 
-    for (int i = stm::gStmCategoryNoMin; i <= stm::gStmCategoryNoMax; i++) {
-        HMI_DEBUG("wm:pm", "category name:%s no:%d", stm::gStmCategoryName[i], stm::gStmCategoryNo[i]);
-        this->categoryname2no_[stm::gStmCategoryName[i]] = stm::gStmCategoryNo[i];
+    for (int i = stm::StmCtgNoMin; i <= stm::StmCtgNoMax; i++) {
+        HMI_DEBUG("wm:pm", "category name:%s no:%d", stm::kStmCategoryName[i], i);
+        this->categoryname2no[stm::kStmCategoryName[i]] = i;
     }
 
-    for (unsigned int i=0; i<STM_NUM_ARA; i++) {
-        HMI_DEBUG("wm:pm", "area name:%s no:%d", stm::gStmAreaName[i], stm::gStmAreaNo[i]);
-        this->areaname2no_[stm::gStmAreaName[i]] = stm::gStmAreaNo[i];
+    for (int i = stm::StmAreaNoMin; i <= stm::StmAreaNoMax; i++) {
+        HMI_DEBUG("wm:pm", "area name:%s no:%d", stm::kStmAreaName[i], i);
+        this->areaname2no[stm::kStmAreaName[i]] = i;
     }
 
     // Load role.db
@@ -110,21 +93,8 @@ int PolicyManager::initialize() {
         return ret;
     }
 
-    // Initialize current/previous state of layers
-    pm::AreaState init_area;
-    pm::LayoutState init_layout;
-    init_area.name     = "none";
-    init_area.category = "none";
-    init_area.role     = "none";
-    init_layout.area_list.push_back(init_area);
-
-    for (int i = stm::gStmLayerNoMin; i <= stm::gStmLayerNoMax; i++) {
-        const char* layer_name = stm::gStmLayerName[i];
-        pm::g_crr_layers[layer_name].name          = layer_name;
-        pm::g_crr_layers[layer_name].layout_state  = init_layout;
-    }
-
-    pm::g_prv_layers = pm::g_crr_layers;
+    // Initialize state which is managed by PolicyManager
+    this->initializeState();
 
     // Initialize StateTransitioner
     stm::stmInitialize();
@@ -136,12 +106,51 @@ int PolicyManager::initialize() {
         return ret;
     }
 
+    pm::g_context = this;
+
     return ret;
 }
 
+void PolicyManager::initializeCarElementState() {
+    CarElement init_car_ele;
+    init_car_ele.state   = "none";
+    init_car_ele.changed = false;
+
+    for (int i = stm::StmCarElementNoMin; i <= stm::StmCarElementNoMax; i++) {
+        const char* car_ele_name = stm::kStmCarElementName[i];
+        this->crr_car_elements[car_ele_name] = init_car_ele;
+    }
+
+    this->prv_car_elements = this->crr_car_elements;
+}
+
+void PolicyManager::initializeLayerState() {
+    AreaState init_area;
+    LayoutState init_layout;
+    init_area.name     = stm::kStmAreaName[stm::StmAreaNoNone];
+    init_area.category = "";
+    init_area.role     = "";
+    init_layout.name   = stm::kStmLayoutName[stm::StmLayoutNoNone];
+    init_layout.area_list.push_back(init_area);
+
+    for (int i = stm::StmLayerNoMin; i <= stm::StmLayerNoMax; i++) {
+        const char* layer_name = stm::kStmLayerName[i];
+        this->crr_layers[layer_name].name         = layer_name;
+        this->crr_layers[layer_name].layout_state = init_layout;
+        this->crr_layers[layer_name].changed      = false;
+    }
+
+    this->prv_layers = this->crr_layers;
+}
+
+void PolicyManager::initializeState() {
+    this->initializeCarElementState();
+    this->initializeLayerState();
+}
+
 int PolicyManager::initializeSdEventLoop() {
     // Get default event loop object
-    int ret = sd_event_new(&(pm::event_loop));
+    int ret = sd_event_new(&(this->event_loop));
     if (0 > ret) {
         HMI_ERROR("wm:pm", "Faild to sd_event_default: errno:%d", ret);
         return -1;
@@ -150,7 +159,7 @@ int PolicyManager::initializeSdEventLoop() {
     // Create thread for sd_event and detach
     std::thread sd_event_loop([this]() {
         while (1) {
-            sd_event_run(pm::event_loop, 1000);
+            sd_event_run(this->event_loop, 1000);
         }
     });
     sd_event_loop.detach();
@@ -158,279 +167,204 @@ int PolicyManager::initializeSdEventLoop() {
     return 0;
 }
 
-static void addStateToJson(
-  const char* key, int is_changed, const char* state, json_object** json_out) {
-    if ((nullptr == key) || (nullptr == state) || (nullptr == json_out)) {
-        HMI_ERROR("wm:pm", "Argument is nullptr!!!");
+void PolicyManager::addStateToJson(const char* name, bool changed,
+                                                                  std::string state, json_object** json_out) {
+    if ((nullptr == name) || (nullptr == json_out)) {
+        HMI_ERROR("wm:pm", "Invalid argument!!!");
         return;
     }
 
-    json_object* json_obj = json_object_new_object();
-    json_object_object_add(json_obj, "is_changed", json_object_new_boolean(is_changed));
-    if (is_changed) {
-        HMI_DEBUG("wm:pm", "%s: state changed (%s)", key, state);
-        json_object_object_add(json_obj, "state", json_object_new_string(state));
+    json_object_object_add(*json_out, "name", json_object_new_string(name));
+    json_object_object_add(*json_out, "state", json_object_new_string(state.c_str()));
+    json_object_object_add(*json_out, "changed", json_object_new_boolean(changed));
+}
+
+void PolicyManager::addStateToJson(const char* layer_name, bool changed,
+                                                                  AreaList area_list, json_object** json_out) {
+    if ((nullptr == layer_name) || (nullptr == json_out)) {
+        HMI_ERROR("wm:pm", "Invalid argument!!!");
+        return;
+    }
+
+    json_object* json_areas = json_object_new_array();
+    json_object* json_tmp;
+    for (AreaState as : area_list) {
+        json_tmp = json_object_new_object();
+        json_object_object_add(json_tmp, "name", json_object_new_string(as.name.c_str()));
+        json_object_object_add(json_tmp, "role", json_object_new_string(as.role.c_str()));
+       json_object_array_add(json_areas, json_tmp);
     }
-    json_object_object_add(*json_out, key, json_obj);
+
+    json_object_object_add(*json_out, "name", json_object_new_string(layer_name));
+    json_object_object_add(*json_out, "changed", json_object_new_boolean(changed));
+    json_object_object_add(*json_out, "areas", json_areas);
 }
 
-static int checkPolicyEntry(int event, uint64_t delay_ms, const char* role);
-static int checkPolicy(sd_event_source *source, void *data) {
-    HMI_DEBUG("wm:pm", "Call");
-    HMI_DEBUG("wm:pm", ">>>>>>>>>> START CHECK POLICY");
+void PolicyManager::updateCarElementState(stm::StmState crr_state) {
+    int car_state_no;
+    std::string car_state;
+    bool changed;
 
-    int event_data = *((int*)data);
+    // Store previous layers
+    this->prv_car_elements = this->crr_car_elements;
 
-    int event_no, category_no, area_no;
-    event_no    = (event_data & STM_MSK_EVT_NO) - 1;
-    category_no = ((event_data & STM_MSK_CTG_NO) >> 8) - 1;
-    area_no     = ((event_data & STM_MSK_ARA_NO) >> 16) - 1;
-    HMI_DEBUG("wm:pm", ">>>>>>>>>> event:%s category:%s area:%s",
-              stm::gStmEventName[event_no],
-              stm::gStmCategoryName[category_no],
-              stm::gStmAreaName[area_no]);
+    // Update car elements
+    HMI_DEBUG("wm:pm", ">>> CAR ELEMENT");
+    for (int car_ele_no = stm::StmCarElementNoMin;
+         car_ele_no <= stm::StmCarElementNoMax; car_ele_no++) {
+        const char* car_ele_name = stm::kStmCarElementName[car_ele_no];
 
-    // Transition state
-    stm::stm_state_t crr_state;
-    int ret = stm::stmTransitionState(event_data, &crr_state);
-    if (0 > ret) {
-        HMI_ERROR("wm:pm", "Error!!");
-        return -1;
+        car_state_no = crr_state.car_element[car_ele_no].state;
+        car_state = stm::kStmCarStateNameList[car_ele_no][car_state_no];
+        changed = (crr_state.car_element[car_ele_no].changed) ? true : false;
+
+        this->crr_car_elements[car_ele_name].state = car_state;
+        this->crr_car_elements[car_ele_name].changed = changed;
+
+        HMI_DEBUG("wm:pm", ">>> >>> NAME: %s", car_ele_name);
+        HMI_DEBUG("wm:pm", ">>> >>> >>> STATE:%s", car_state.c_str());
+        HMI_DEBUG("wm:pm", ">>> >>> >>> CHANGED:%s", (changed) ? "true" : "false");
     }
+}
 
-    HMI_DEBUG("wm:pm", "parking brake state     (is_changed:%d state:%d:%s)",
-              crr_state.parking_brake.is_changed,
-              crr_state.parking_brake.state,
-              stm::gStmParkingBrakeStateNo2Name[crr_state.parking_brake.state]);
-    HMI_DEBUG("wm:pm", "accelerator pedal state (is_changed:%d state:%d:%s)",
-              crr_state.accel_pedal.is_changed,
-              crr_state.accel_pedal.state,
-              stm::gStmAccelPedalStateNo2Name[crr_state.accel_pedal.state]);
-    HMI_DEBUG("wm:pm", "lightstatus brake state (is_changed:%d state:%d:%s)",
-              crr_state.lightstatus_brake.is_changed,
-              crr_state.lightstatus_brake.state,
-              stm::gStmLightstatusBrakeStateNo2Name[crr_state.lightstatus_brake.state]);
-    HMI_DEBUG("wm:pm", "car state               (is_changed:%d state:%d:%s)",
-              crr_state.car.is_changed,
-              crr_state.car.state,
-              stm::gStmCarStateNo2Name[crr_state.car.state]);
-    HMI_DEBUG("wm:pm", "lamp state              (is_changed:%d state:%d:%s)",
-              crr_state.lamp.is_changed,
-              crr_state.lamp.state,
-              stm::gStmLampStateNo2Name[crr_state.lamp.state]);
-    HMI_DEBUG("wm:pm", "restriction mode state  (is_changed:%d state:%d:%s)",
-              crr_state.restriction_mode.is_changed,
-              crr_state.restriction_mode.state,
-              stm::gStmRestrictionModeStateNo2Name[crr_state.restriction_mode.state]);
-    HMI_DEBUG("wm:pm", "homescreen state        (is_changed:%d state:%d:%s)",
-              crr_state.layer[stm::gStmLayerNoHomescreen].is_changed,
-              crr_state.layer[stm::gStmLayerNoHomescreen].state,
-              stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoHomescreen].state]);
-    HMI_DEBUG("wm:pm", "apps state              (is_changed:%d state:%d:%s)",
-              crr_state.layer[stm::gStmLayerNoApps].is_changed,
-              crr_state.layer[stm::gStmLayerNoApps].state,
-              stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoApps].state]);
-    HMI_DEBUG("wm:pm", "restriction state       (is_changed:%d state:%d:%s)",
-              crr_state.layer[stm::gStmLayerNoRestriction].is_changed,
-              crr_state.layer[stm::gStmLayerNoRestriction].state,
-              stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoRestriction].state]);
-    HMI_DEBUG("wm:pm", "on_screen state         (is_changed:%d state:%d:%s)",
-              crr_state.layer[stm::gStmLayerNoOnScreen].is_changed,
-              crr_state.layer[stm::gStmLayerNoOnScreen].state,
-              stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoOnScreen].state]);
-
-#if 1 // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
-    // Store previous layers
-    pm::g_prv_layers = pm::g_crr_layers;
+void PolicyManager::updateLayerState(int event_data, stm::StmState crr_state) {
+    int event_no, category_no, area_no;
+
+    event_no    = STM_GET_EVENT_FROM_ID(event_data);
+    category_no = STM_GET_CATEGORY_FROM_ID(event_data);
+    area_no     = STM_GET_AREA_FROM_ID(event_data);
 
-    std::string role = pm::g_event_info_list[event_data];
-    std::string event = std::string(stm::gStmEventName[event_no]);
-    std::string category = std::string(stm::gStmCategoryName[category_no]);
-    std::string area = std::string(stm::gStmAreaName[area_no]);
+    std::string req_evt = stm::kStmEventName[event_no];
+    std::string req_ctg = stm::kStmCategoryName[category_no];
+    std::string req_area = stm::kStmAreaName[area_no];
+    std::string req_role = this->req_role_list[event_data];
+    HMI_DEBUG("wm:pm", "REQ: event:%s role:%s category:%s area:%s",
+        req_evt.c_str(), req_role.c_str(), req_ctg.c_str(), req_area.c_str());
+
+    // Store previous layers
+    this->prv_layers = this->crr_layers;
 
     // Update layers
-    for (int layer_no = stm::gStmLayerNoMin;
-         layer_no <= stm::gStmLayerNoMax; layer_no++) {
-        const char* layer_name = stm::gStmLayerName[layer_no];
+    for (int layer_no = stm::StmLayerNoMin;
+         layer_no <= stm::StmLayerNoMax; layer_no++) {
+        const char* layer_name = stm::kStmLayerName[layer_no];
         HMI_DEBUG("wm:pm", "LAYER:%s", layer_name);
 
 #if 1
         // If restriction mode is changed off -> on,
         // store current state for state of restriction mode off
-        if ((crr_state.restriction_mode.is_changed)
-            && (stm::gStmRestrictionModeStateNoOn == crr_state.restriction_mode.state)) {
-            HMI_DEBUG("wm:lm", "Store current state for state of restriction mode off");
-            pm::g_prv_layers_car_stop[layer_name] = pm::g_crr_layers[layer_name];
+        if ((crr_state.car_element[stm::StmCarElementNoRestrictionMode].changed)
+            && (stm::StmRestrictionModeSttNoOn == crr_state.car_element[stm::StmCarElementNoRestrictionMode].state)) {
+            HMI_DEBUG("wm:pm", "Store current state for state of restriction mode off");
+            this->prv_layers_car_stop[layer_name] = this->crr_layers[layer_name];
         }
 #else
         // If car state is changed car_stop -> car_run,
         // store current state for state of car stop
-        if ((crr_state.car.is_changed)
-            && (stm::gStmCarStateNoRun == crr_state.car.state)) {
-            HMI_DEBUG("wm:lm", "Store current state for state of car stop");
-            pm::g_prv_layers_car_stop[layer_name] = pm::g_crr_layers[layer_name];
+        if ((crr_state.car.changed)
+            && (stm::StmRunningNoRun == crr_state.car.state)) {
+            HMI_DEBUG("wm:pm", "Store current state for state of car stop");
+            this->prv_layers_car_stop[layer_name] = this->crr_layers[layer_name];
         }
 #endif
 
-
         // This layer is changed?
-        if (crr_state.layer[layer_no].is_changed) {
+        int changed = crr_state.layer[layer_no].changed;
+        if (changed) {
+            HMI_DEBUG("wm:pm", "This layer is changed");
+
             // Get previous layout name of this layer
-            pm::LayoutState prv_layout_state =  pm::g_prv_layers[layer_name].layout_state;
+            LayoutState prv_layout_state =  this->prv_layers[layer_name].layout_state;
             std::string prv_layout_name = prv_layout_state.name;
 
             // Get current layout name of this layer
             int crr_layout_state_no =  crr_state.layer[layer_no].state;
-            std::string crr_layout_name = std::string(stm::gStmLayoutNo2Name[crr_layout_state_no]);
+            std::string crr_layout_name = std::string(stm::kStmLayoutName[crr_layout_state_no]);
 
-            pm::LayoutState crr_layout_state;
+            LayoutState crr_layout_state;
 #if 1
-            if ((crr_state.restriction_mode.is_changed)
-                && (stm::gStmRestrictionModeStateNoOff == crr_state.restriction_mode.state)) {
+            if ((crr_state.car_element[stm::StmCarElementNoRestrictionMode].changed)
+                && (stm::StmRestrictionModeSttNoOff == crr_state.car_element[stm::StmCarElementNoRestrictionMode].state)) {
                 // If restriction mode is changed on -> off,
                 // restore state of restriction mode off
-                HMI_DEBUG("wm:lm", "Restriction mode is changed on -> off, so restore state of restriction mode off");
-                crr_layout_state = pm::g_prv_layers_car_stop[layer_name].layout_state;
+                HMI_DEBUG("wm:pm", "Restriction mode is changed on -> off, so restore state of restriction mode off");
 #else
-            if ((crr_state.car.is_changed)
-                && (stm::gStmCarStateNoStop == crr_state.car.state)) {
+            if ((crr_state.car_element[stm::StmCarElementNoRunning].changed)
+                && (stm::StmCarElementNoStop == crr_state.car_element[stm::StmCarElementNoRunning].state)) {
                 // If car state is changed car_run -> car_stop,
                 // restore state of car stop
-                HMI_DEBUG("wm:lm", "Car state is changed car_run -> car_stop, so restore state of car stop");
-                crr_layout_state = pm::g_prv_layers_car_stop[layer_name].layout_state;
+                HMI_DEBUG("wm:pm", "Car state is changed car_run -> car_stop, so restore state of car stop");
 #endif
+                crr_layout_state = this->prv_layers_car_stop[layer_name].layout_state;
+                crr_layout_name = crr_layout_state.name;
+                if ((prv_layout_name == crr_layout_name)
+                    && (stm::kStmAreaName[stm::StmAreaNoNone] == crr_layout_name)) {
+                    changed  = 0;
+                }
             }
-#if 0
-            else if ("none" == crr_layout_name) {
-                // If current layout is "none",
-                // current areas is set with "none"
-                HMI_DEBUG("wm:pm", "Current layout is \"none\"");
-                pm::AreaState crr_area_state;
-                crr_area_state.name     = "none";
-                crr_area_state.category = "none";
-                crr_area_state.role     = "none";
-                crr_layout_state.name = "none";
-                crr_layout_state.area_list.push_back(crr_area_state);
+            else if ((prv_layout_name == crr_layout_name)
+                     && (stm::kStmAreaName[stm::StmAreaNoNone] == crr_layout_name)) {
+                // Copy previous layout state for current
+                crr_layout_state = prv_layout_state;
+                changed  = 0;
             }
-#endif
             else {
                 // Copy previous layout state for current
                 crr_layout_state = prv_layout_state;
 
+                HMI_DEBUG("wm:pm", "layout name previous:%s current:%s",
+                          prv_layout_name.c_str(), crr_layout_name.c_str());
                 if (prv_layout_name == crr_layout_name) {
-                    HMI_DEBUG("wm:lm", "Previous layout is same with current");
+                    HMI_DEBUG("wm:pm", "Previous layout is same with current");
                 }
                 else {
                     // If previous layout is NOT same with current,
                     // current areas is set with default value
-                    HMI_DEBUG("wm:lm", "Previous layout is NOT same with current");
-                    crr_layout_state.name         = pm::g_default_layouts[crr_layout_name].name;
-                    crr_layout_state.category_num = pm::g_default_layouts[crr_layout_name].category_num;
-                    crr_layout_state.area_list    = pm::g_default_layouts[crr_layout_name].area_list;
+                    HMI_DEBUG("wm:pm", "Previous layout is NOT same with current");
+                    crr_layout_state.name         = this->default_layouts[crr_layout_name].name;
+                    crr_layout_state.category_num = this->default_layouts[crr_layout_name].category_num;
+                    crr_layout_state.area_list    = this->default_layouts[crr_layout_name].area_list;
                 }
 
-                // Update role in new area
-#if 1
-                if (crr_state.restriction_mode.is_changed) {
-                    // Updating role is not necessary
-                    // because new_role is not specified
-                    // when restriction mode is changed
-                    HMI_DEBUG("wm:lm", "Updating role is not necessary because new_role is not specified when restriction mode is changed");
-#else
-                if (crr_state.car.is_changed) {
-                    // Updating role is not necessary
-                    // because new_role is not specified
-                    // when car state is changed
-                    HMI_DEBUG("wm:lm", "Updating role is not necessary because new_role is not specified when car state is changed");
-#endif
-                }
-                else {
-
-                    std::map<std::string, std::vector<pm::AreaState>> ctg_list;
-                    for (int ctg_no=stm::gStmCategoryNoMin;
-                         ctg_no<=stm::gStmCategoryNoMax; ctg_no++) {
-                        const char* ctg = stm::gStmCategoryName[ctg_no];
-                        HMI_DEBUG("wm:pm", "ctg:%s", ctg);
-
-                        // Create area list of previous app
-                        std::vector<pm::AreaState> area_list;
-                        for (pm::AreaState area_state : prv_layout_state.area_list) {
-                            if (std::string(ctg) == area_state.category) {
-                                // If there is the category which is same with new category in previous layout,
-                                // push it to area list
-                                HMI_DEBUG("wm:pm", "push area_state to prv list");
-                                area_list.push_back(area_state);
-                            }
-                        }
-
-                        int prv_ctg_num = prv_layout_state.category_num[ctg];
-                        int crr_ctg_num = crr_layout_state.category_num[ctg];
-                        HMI_DEBUG("wm:pm", "crr_ctg_num:%d prv_ctg_num:%d", crr_ctg_num, prv_ctg_num);
-
-                        // Remove state of area which is used no longer from area list
-                        if (crr_ctg_num < prv_ctg_num) {
-                            HMI_DEBUG("wm:pm", "crr_ctg_num < prv_ctg_num");
-                            if (0 == strcmp(ctg, category.c_str())) {
-                                for (auto i = area_list.begin(); i != area_list.end(); ++i) {
-                                    if ((role == i->role) && (area == i->name)) {
-                                        HMI_DEBUG("wm:pm", "store removed role:%s", i->role.c_str());
-                                        crr_layout_state.last_invisibled_role[category] = i->role;
-
-                                        HMI_DEBUG("wm:pm", "remove area state which have same role with requested role");
-                                        area_list.erase(i);
-
-                                        prv_ctg_num--;
-
-                                        if (crr_ctg_num == prv_ctg_num) {
-                                            break;
-                                        }
-                                    }
-                                }
-                            }
-                            else {
-                                HMI_DEBUG("wm:pm", "store removed role:%s", area_list.begin()->role.c_str());
-                                crr_layout_state.last_invisibled_role[ctg] = area_list.begin()->role;
-
-                                HMI_DEBUG("wm:pm", "remove the oldest area data");
-                                area_list.erase(area_list.begin());
-                            }
-                        }
-                        else if (crr_ctg_num >= prv_ctg_num) {
-                            HMI_DEBUG("wm:pm", "crr_ctg_num >= prv_ctg_num");
-                            if (0 == strcmp(ctg, category.c_str())) {
-                                HMI_DEBUG("wm:pm", "category of requested role is same");
-                                if ((crr_ctg_num == prv_ctg_num) && (0 != prv_ctg_num)) {
-                                    HMI_DEBUG("wm:pm", "store removed role:%s", area_list.begin()->role.c_str());
-                                    crr_layout_state.last_invisibled_role[ctg] = area_list.begin()->role;
-
-                                    HMI_DEBUG("wm:pm", "remove the oldest area data for adding requested role");
-                                    area_list.erase(area_list.begin());
-                                }
-                            }
-                        }
-
-                        // Check
-                        for (pm::AreaState area_state : area_list) {
-                            HMI_DEBUG("wm:pm", "area_list name:%s category:%s role:%s",
-                                      area_state.name.c_str(),
-                                      area_state.category.c_str(),
-                                      area_state.role.c_str());
+                // Create candidate list
+                std::map<std::string, AreaList> cand_list;
+                for (int ctg_no=stm::StmCtgNoMin;
+                     ctg_no<=stm::StmCtgNoMax; ctg_no++) {
+                    const char* ctg = stm::kStmCategoryName[ctg_no];
+                    HMI_DEBUG("wm:pm", "ctg:%s", ctg);
+
+                    // Create candidate list for category from the previous displayed categories
+                    AreaList tmp_cand_list;
+                    for (AreaState area_state : prv_layout_state.area_list) {
+                        if (std::string(ctg) == area_state.category) {
+                            // If there is the category which is same with new category in previous layout,
+                            // push it to list
+                            HMI_DEBUG("wm:pm", "Push to candidate list category:%s role:%s",
+                                      area_state.category.c_str(), area_state.role.c_str());
+                            tmp_cand_list.push_back(area_state);
                         }
-
-                        ctg_list[ctg] = area_list;
                     }
 
-                    if (event == "activate") {
-                        HMI_DEBUG("wm:pm", "event is activate");
-                        // First, update area for requested role
-                        bool request_for_this_layer = false;
-                        bool updated = false;
-                        for (pm::AreaState &as : crr_layout_state.area_list) {
-                            if (as.category == category) {
+                    int candidate_num = prv_layout_state.category_num[ctg];
+                    int blank_num = crr_layout_state.category_num[ctg];
+                    HMI_DEBUG("wm:pm", "blank_num:%d candidate_num:%d", blank_num, candidate_num);
+
+                    // If requested event is "activate"
+                    // and there are requested category and area,
+                    // update area with requested role in current layout.
+                    bool request_for_this_layer = false;
+                    bool updated = false;
+                    if ((ctg == req_ctg) && ("activate" == req_evt) ) {
+                        HMI_DEBUG("wm:pm", "requested event is activate");
+                        for (AreaState &as : crr_layout_state.area_list) {
+                            if (as.category == req_ctg) {
                                 request_for_this_layer = true;
-                                if (as.name == area) {
-                                    HMI_DEBUG("wm:pm", "update area for requested category:%s role:%s area:%s", category.c_str(), role.c_str(), area.c_str());
-                                    as.role = role;
+
+                                if (as.name == req_area) {
+                                    HMI_DEBUG("wm:pm", "Update current layout: area:%s category:%s role:%s",
+                                              as.name.c_str(), as.category.c_str(), as.role.c_str());
+                                    as.role = req_role;
+                                    blank_num--;
                                     updated = true;
                                     break;
                                 }
@@ -438,202 +372,238 @@ static int checkPolicy(sd_event_source *source, void *data) {
                         }
 
                         // If NOT updated: there is not requested area in new layout, 
-                        // requested role is used later.
+                        // so push requested role to candidate list
                         if (request_for_this_layer && (!updated)) {
-                            HMI_DEBUG("wm:pm", "requested role is used later category:%s role:%s area:%s", category.c_str(), role.c_str(), area.c_str());
-                            pm::AreaState area_state;
-                            area_state.name = area;
-                            area_state.category = category;
-                            area_state.role = role;
-                            ctg_list[category].push_back(area_state);
+                            HMI_DEBUG("wm:pm", "Push request to candidate list");
+                            AreaState area_state;
+                            area_state.name = req_area;
+                            area_state.category = req_ctg;
+                            area_state.role = req_role;
+                            tmp_cand_list.push_back(area_state);
                         }
                     }
 
-                    // Update areas
-                    for (pm::AreaState &as : crr_layout_state.area_list) {
-                        if (as.role != role) {  // This conditional expression is useful in only when requested activate event
-                            HMI_DEBUG("wm:pm", "update areas for category:%s", as.category.c_str());
-                            if (0 != ctg_list[as.category].size()) {
-                                HMI_DEBUG("wm:pm", "update role to %s by using area list this category",
-                                          ctg_list[as.category].begin()->role);
-                                as.role = ctg_list[as.category].begin()->role;
-                                ctg_list[as.category].erase(ctg_list[as.category].begin());
+                    // Compare number of candidate/blank,
+                    // And remove role in order of the oldest as necessary
+                    if (candidate_num < blank_num) {
+                        // Refer history stack
+                        // and add to the top of tmp_cand_list in order to the newest
+                        while (candidate_num != blank_num) {
+                            AreaState area_state;
+                            area_state.name = "";
+                            area_state.category = ctg;
+                            if (0 != crr_layout_state.role_history[ctg].size()) {
+                                HMI_DEBUG("wm:pm", "Use role in history stack:%s",
+                                          crr_layout_state.role_history[ctg].back().c_str());
+                                area_state.role = crr_layout_state.role_history[ctg].back();
+                                crr_layout_state.role_history[ctg].pop_back();
                             }
                             else {
-                                HMI_DEBUG("wm:pm", "there is no area list for this category, so update area by last invisibled role:", crr_layout_state.last_invisibled_role[as.category]);
-                                as.role = crr_layout_state.last_invisibled_role[as.category];
-                                crr_layout_state.last_invisibled_role.erase(as.category);
+                                HMI_ERROR("wm:pm", "There is no role in history stack!!");
+                                area_state.role = "";
                             }
+                            tmp_cand_list.push_back(area_state);
+                            candidate_num++;
                         }
                     }
+                    else if (candidate_num > blank_num) {
+                        HMI_DEBUG("wm:pm", "candidate_num > blank_num");
+
+                        // Remove the oldest role from candidate list
+                        while (candidate_num != blank_num) {
+                            std::string removed_role = tmp_cand_list.begin()->role;
+                            HMI_DEBUG("wm:pm", "Remove the oldest data(role:%s) from tmp_cand_list",
+                                      removed_role.c_str());
+                            tmp_cand_list.erase(tmp_cand_list.begin());
+                            candidate_num--;
+
+                            // Push removed data to history stack
+                            crr_layout_state.role_history[ctg].push_back(removed_role);
+                        }
+                    }
+                    else {  // (candidate_num == blank_num)
+                        // nop
+                    }
+
+                    cand_list[ctg] = tmp_cand_list;
+                }
+
+                // Update areas
+                for (AreaState &as : crr_layout_state.area_list) {
+                    HMI_DEBUG("wm:pm", "Current area info area:%s category:%s",
+                              as.name.c_str(), as.category.c_str());
+                    if ("" == as.role) {
+                        HMI_DEBUG("wm:pm", "Update this area with role:%s",
+                                  cand_list[as.category].begin()->role.c_str());
+                        as.role = cand_list[as.category].begin()->role;
+                        cand_list[as.category].erase(cand_list[as.category].begin());
+                    }
                 }
             }
             // Update current layout of this layer
-            pm::g_crr_layers[layer_name].layout_state = crr_layout_state;
+            this->crr_layers[layer_name].layout_state = crr_layout_state;
         }
+        // Update changed flag
+        this->crr_layers[layer_name].changed = (changed) ? true : false;
     }
 
+    // Erase role for the event_data from list
+    this->req_role_list.erase(event_data);
+
     // Check
-    for (auto itr : pm::g_crr_layers) {
-        pm::LayerState ls = itr.second;
+    for (auto itr : this->crr_layers) {
+        LayerState ls = itr.second;
         HMI_DEBUG("wm:pm", ">>> LAYER:%s",ls.name.c_str());
         HMI_DEBUG("wm:pm", ">>> >>> LAYOUT:%s", ls.layout_state.name.c_str());
 
-        for (pm::AreaState as : ls.layout_state.area_list) {
+        for (AreaState as : ls.layout_state.area_list) {
             HMI_DEBUG("wm:pm", ">>> >>> >>> AREA:%s", as.name.c_str());
             HMI_DEBUG("wm:pm", ">>> >>> >>> >>> CTG:%s", as.category.c_str());
             HMI_DEBUG("wm:pm", ">>> >>> >>> >>> ROLE:%s", as.role.c_str());
         }
+        HMI_DEBUG("wm:pm", ">>> >>> CHANGED:%s", (ls.changed) ? "true" : "false");
     }
-#endif // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+}
 
-    json_object* json_out = json_object_new_object();
+void PolicyManager::updateState(int event_data, stm::StmState crr_state) {
+    this->updateCarElementState(crr_state);
+    this->updateLayerState(event_data, crr_state);
+}
 
-    // Create result
+void PolicyManager::createOutputInformation(stm::StmState crr_state, json_object **json_out) {
+    json_object* json_tmp;
+
+    // Create car element information
     // {
-    //     "parking_brake": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
-    //     },
-    addStateToJson("parking_brake",
-                   crr_state.parking_brake.is_changed,
-                   stm::gStmParkingBrakeStateNo2Name[crr_state.parking_brake.state],
-                   &json_out);
-
-    //     "accel_pedal": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
-    //     },
-    addStateToJson("accel_pedal",
-                   crr_state.accel_pedal.is_changed,
-                   stm::gStmAccelPedalStateNo2Name[crr_state.accel_pedal.state],
-                   &json_out);
-
-    //     "lightstatus_brake": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
-    //     },
-    addStateToJson("lightstatus_brake",
-                   crr_state.lightstatus_brake.is_changed,
-                   stm::gStmLightstatusBrakeStateNo2Name[crr_state.lightstatus_brake.state],
-                   &json_out);
-
-    //     "car": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
-    //     },
-    addStateToJson("car",
-                   crr_state.car.is_changed,
-                   stm::gStmCarStateNo2Name[crr_state.car.state],
-                   &json_out);
-
-    //     "lamp": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
-    //     },
-    addStateToJson("lamp",
-                   crr_state.lamp.is_changed,
-                   stm::gStmLampStateNo2Name[crr_state.lamp.state],
-                   &json_out);
-
-    //     "restriction_mode": {
-    //         "is_changed": <bool>,
-    //         "state": <const char*>
+    //     "car_elements": [
+    //     {
+    //         "parking_brake": {
+    //             "changed": <bool>,
+    //             "state": <const char*>
+    //         },
+    //         ...
     //     },
-    addStateToJson("restriction_mode",
-                   crr_state.restriction_mode.is_changed,
-                   stm::gStmRestrictionModeStateNo2Name[crr_state.restriction_mode.state],
-                   &json_out);
+    json_object* json_car_ele = json_object_new_array();
+    const char* car_ele_name;
+    for (int car_ele_no = stm::StmCarElementNoMin;
+         car_ele_no <= stm::StmCarElementNoMax; car_ele_no++) {
+        car_ele_name = stm::kStmCarElementName[car_ele_no];
+        json_tmp = json_object_new_object();
+        this->addStateToJson(car_ele_name,
+                                                        this->crr_car_elements[car_ele_name].changed,
+                                                        this->crr_car_elements[car_ele_name].state,
+                                                        &json_tmp);
+        json_object_array_add(json_car_ele, json_tmp);
+    }
+    json_object_object_add(*json_out, "car_elements", json_car_ele);
 
+    // Create layout information
+    //
     //     "layers": [
+    //     {
+    //         "homescreen": {
+    //             "changed": <bool>,
+    //             "areas": [
+    //             {
+    //                 "name":<const char*>,
+    //                 "role":<const char*>
+    //             }.
+    //             ...
+    //             ]
+    //         }
+    //     },
+    //     ...
     json_object* json_layer = json_object_new_array();
-    json_object* json_tmp;
-
-    //         {
-    //             "homescreen": {
-    //                 "is_changed": <bool>,
-    //                 "state": <const char*>
-    //             }
-    //         },
-    //     ]
-    // }
-    json_tmp = json_object_new_object();
-    addStateToJson("homescreen",
-                   crr_state.layer[stm::gStmLayerNoHomescreen].is_changed,
-                   stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoHomescreen].state],
-                   &json_tmp);
-    json_object_array_add(json_layer, json_tmp);
-
-    //         {
-    //             "apps": {
-    //                 "is_changed": <bool>,
-    //                 "state": <const char*>
-    //             }
-    //         },
-    json_tmp = json_object_new_object();
-    addStateToJson("apps",
-                   crr_state.layer[stm::gStmLayerNoApps].is_changed,
-                   stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoApps].state],
-                   &json_tmp);
-    json_object_array_add(json_layer, json_tmp);
-
-    //         {
-    //             "restriction": {
-    //                 "is_changed": <bool>,
-    //                 "state": <const char*>
-    //             }
-    //         },
-    json_tmp = json_object_new_object();
-    addStateToJson("restriction",
-                   crr_state.layer[stm::gStmLayerNoRestriction].is_changed,
-                   stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoRestriction].state],
-                   &json_tmp);
-    json_object_array_add(json_layer, json_tmp);
-
-    //         {
-    //             "on_screen": {
-    //                 "is_changed": <bool>,
-    //                 "state": <const char*>
-    //             }
-    //         },
-    json_tmp = json_object_new_object();
-    addStateToJson("on_screen",
-                   crr_state.layer[stm::gStmLayerNoOnScreen].is_changed,
-                   stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoOnScreen].state],
-                   &json_tmp);
-    json_object_array_add(json_layer, json_tmp);
-
-    // Add json array of layer
-    json_object_object_add(json_out, "layers", json_layer);
-
-    // Notify state is changed
-    if (nullptr != pm::callback.onStateTransitioned) {
-        pm::callback.onStateTransitioned(json_out);
+    const char* layer_name;
+    for (int layer_no = stm::StmLayerNoMin;
+         layer_no <= stm::StmLayerNoMax; layer_no++) {
+        layer_name = stm::kStmLayerName[layer_no];
+        json_tmp = json_object_new_object();
+        this->addStateToJson(layer_name,
+                                                        this->crr_layers[layer_name].changed,
+                                                        this->crr_layers[layer_name].layout_state.area_list,
+                                                        &json_tmp);
+        json_object_array_add(json_layer, json_tmp);
     }
+    json_object_object_add(*json_out, "layers", json_layer);
+}
 
-    if (crr_state.car.is_changed) {
-        if (stm::gStmCarStateNoRun == crr_state.car.state) {
+void PolicyManager::controlTimerEvent(stm::StmState crr_state) {
+    if (crr_state.car_element[stm::StmCarElementNoRunning].changed) {
+        if (stm::StmRunningNoRun == crr_state.car_element[stm::StmCarElementNoRunning].state) {
             // Set delay event(restriction mode on)
-            checkPolicyEntry(STM_EVT_NO_RESTRICTION_MODE_ON, 3000, nullptr);
+            this->setStateTransitionProcessToSystemd(stm::StmEvtNoRestrictionModeOn, 3000, "");
         }
-        else if (stm::gStmCarStateNoStop == crr_state.car.state) {
-            // Set event(restriction mode off)
-            checkPolicyEntry(STM_EVT_NO_RESTRICTION_MODE_OFF, 0, nullptr);
-
+        else if (stm::StmRunningNoStop == crr_state.car_element[stm::StmCarElementNoRunning].state) {
             // Stop timer for restriction on event
-            if (pm::event_source_list.find(STM_EVT_NO_RESTRICTION_MODE_ON)
-              != pm::event_source_list.end()) {
+            if (this->event_source_list.find(stm::StmEvtNoRestrictionModeOn)
+              != this->event_source_list.end()) {
                 HMI_DEBUG("wm:pm", "Stop timer for restriction on");
                 sd_event_source *event_source
-                    = pm::event_source_list[STM_EVT_NO_RESTRICTION_MODE_ON];
+                    = this->event_source_list[stm::StmEvtNoRestrictionModeOn];
                 int ret = sd_event_source_set_enabled(event_source, SD_EVENT_OFF);
                 if (0 > ret) {
                     HMI_ERROR("wm:pm", "Failed to stop timer");
                 }
             }
+
+            // Set event(restriction mode off)
+            this->setStateTransitionProcessToSystemd(stm::StmEvtNoRestrictionModeOff, 0, "");
+        }
+    }
+}
+
+int PolicyManager::transitionState(sd_event_source *source, void *data) {
+    HMI_DEBUG("wm:pm", "Call");
+    HMI_DEBUG("wm:pm", ">>>>>>>>>> START CHECK POLICY");
+
+    int event_data = *((int*)data);
+
+    int event_no, category_no, area_no;
+    event_no    = STM_GET_EVENT_FROM_ID(event_data);
+    category_no = STM_GET_CATEGORY_FROM_ID(event_data);
+    area_no     = STM_GET_AREA_FROM_ID(event_data);
+    HMI_DEBUG("wm:pm", ">>>>>>>>>> event:%s category:%s area:%s",
+              stm::kStmEventName[event_no],
+              stm::kStmCategoryName[category_no],
+              stm::kStmAreaName[area_no]);
+
+    // Transition state
+    stm::StmState crr_state;
+    int ret = stm::stmTransitionState(event_data, &crr_state);
+    if (0 > ret) {
+        HMI_ERROR("wm:pm", "Failed transition state");
+        if (nullptr != this->callback.onError) {
+            json_object* json_out = json_object_new_object();
+            json_object_object_add(json_out, "message",
+                                   json_object_new_string("Failed to transition state"));
+            json_object_object_add(json_out, "event",
+                                   json_object_new_string(stm::kStmEventName[event_no]));
+            json_object_object_add(json_out, "role",
+                                   json_object_new_string(this->req_role_list[event_data].c_str()));
+            json_object_object_add(json_out, "area",
+                                   json_object_new_string(stm::kStmAreaName[area_no]));
+            this->callback.onError(json_out);
+            json_object_put(json_out);
         }
+        return -1;
     }
 
+    // Update state which is managed by PolicyManager
+    this->updateState(event_data, crr_state);
+
+    // Create output information for ResourceManager
+    json_object* json_out = json_object_new_object();
+    this->createOutputInformation(crr_state, &json_out);
+
+    // Notify changed state
+    if (nullptr != this->callback.onStateTransitioned) {
+        this->callback.onStateTransitioned(json_out);
+    }
+
+    // Start/Stop timer events
+    this->controlTimerEvent(crr_state);
+
     // Release json_object
     json_object_put(json_out);
 
@@ -644,38 +614,35 @@ static int checkPolicy(sd_event_source *source, void *data) {
     sd_event_source_unref(source);
 
     // Remove event source from list
-    if (pm::event_source_list.find(event_data) != pm::event_source_list.end()) {
-        pm::event_source_list.erase(event_data);
+    if (this->event_source_list.find(event_data) != this->event_source_list.end()) {
+        this->event_source_list.erase(event_data);
     }
 
     HMI_DEBUG("wm:pm", ">>>>>>>>>> FINISH CHECK POLICY");
     return 0;
 }
 
-static int timerEvent(sd_event_source *source, uint64_t usec, void *data) {
-    int ret = checkPolicy(source, data);
+int PolicyManager::timerEvent(sd_event_source *source, uint64_t usec, void *data) {
+    HMI_DEBUG("wm:pm", "Call");
+
+    int ret = this->transitionState(source, data);
     return ret;
-};
+}
 
-static int checkPolicyEntry(int event, uint64_t delay_ms, const char* role)
+int PolicyManager::setStateTransitionProcessToSystemd(int event, uint64_t delay_ms, std::string role)
 {
     HMI_DEBUG("wm:pm", "Call");
-    HMI_DEBUG("wm:pm", "event:0x%x", event);
+    HMI_DEBUG("wm:pm", "event:0x%x delay:%d role:%s", event, delay_ms, role.c_str());
 
-    // Store event info
-    if (nullptr == role) {
-        pm::g_event_info_list[event] = std::string("");
-    }
-    else {
-        pm::g_event_info_list[event] = std::string(role);
-    }
+    // Store requested role
+    this->req_role_list[event] = role;
 
     if (0 == delay_ms) {
-        int ret = sd_event_add_defer(pm::event_loop, NULL,
-                                     &checkPolicy, new int(event));
+        int ret = sd_event_add_defer(this->event_loop, NULL,
+                                     &pm::transitionStateWrapper, new int(event));
         if (0 > ret) {
             HMI_ERROR("wm:pm", "Faild to sd_event_add_defer: errno:%d", ret);
-            pm::g_event_info_list.erase(event);
+            this->req_role_list.erase(event);
             return -1;
         }
     }
@@ -691,27 +658,29 @@ static int checkPolicyEntry(int event, uint64_t delay_ms, const char* role)
 
         // Set timer
         struct sd_event_source* event_source;
-        int ret = sd_event_add_time(pm::event_loop, &event_source, CLOCK_MONOTONIC, usec, 1,
-                                    &timerEvent, new int(event));
+        int ret = sd_event_add_time(this->event_loop, &event_source, CLOCK_MONOTONIC, usec, 1,
+                                    &pm::timerEventWrapper, new int(event));
         if (0 > ret) {
             HMI_ERROR("wm:pm", "Faild to sd_event_add_time: errno:%d", ret);
-            pm::g_event_info_list.erase(event);
+            this->req_role_list.erase(event);
             return -1;
         }
 
         // Store event source
-        pm::event_source_list[event] = event_source;
+        this->event_source_list[event] = event_source;
     }
 
     return 0;
 }
 
 void PolicyManager::registerCallback(CallbackTable callback) {
-    pm::callback.onStateTransitioned = callback.onStateTransitioned;
-    pm::callback.onError             = callback.onError;
+    HMI_DEBUG("wm:pm", "Call");
+
+    this->callback.onStateTransitioned = callback.onStateTransitioned;
+    this->callback.onError             = callback.onError;
 }
 
-int PolicyManager::inputEvent(json_object* json_in) {
+int PolicyManager::setInputEventData(json_object* json_in) {
     HMI_DEBUG("wm:pm", "Call");
 
     // Check arguments
@@ -722,49 +691,100 @@ int PolicyManager::inputEvent(json_object* json_in) {
 
     // Get event from json_object
     const char* event = this->getStringFromJson(json_in, "event");
-    int event_no = 0;
+    int event_no = stm::StmEvtNoNone;
     if (nullptr != event) {
         // Convert name to number
-        event_no = this->eventname2no_[event];
-        HMI_DEBUG("wm:pm", "event(%s:%d)", event, event_no);
+        auto itr = this->eventname2no.find(event);
+        if (this->eventname2no.end() != itr) {
+            event_no = this->eventname2no[event];
+            HMI_DEBUG("wm:pm", "event(%s:%d)", event, event_no);
+        }
+        else {
+            HMI_ERROR("wm:pm", "Invalid event name!!");
+            return -1;
+        }
+    }
+    else {
+        HMI_ERROR("wm:pm", "Event is not set!!");
+        return -1;
     }
 
     // Get role from json_object
     const char* role = this->getStringFromJson(json_in, "role");
-    int category_no = 0;
+    int category_no = stm::StmCtgNoNone;
     if (nullptr != role) {
         HMI_DEBUG("wm:pm", "role(%s)", role);
 
         // Convert role to category
-        const char* category = this->role2category_[role].c_str();
-        if (0 == strcmp("", category)) {
-            HMI_ERROR("wm:pm", "Error!!");
-            return -1;
+        std::string category;
+        auto itr = this->role2category.find(role);
+        if (this->role2category.end() != itr) {
+            category = this->role2category[role];
+
+            // Convert name to number
+            category_no = categoryname2no[category];
+            HMI_DEBUG("wm:pm", "role(%s), category(%s:%d)", role, category.c_str(), category_no);
         }
-        HMI_DEBUG("wm:pm", "category(%s)", category);
+    }
 
-        // Convert name to number
-        category_no = categoryname2no_[category];
-        HMI_DEBUG("wm:pm", "role(%s), category(%s:%d)", role, category, category_no);
+    if (stm::StmCtgNoNone == category_no) {
+        role = "";
     }
 
     // Get areat from json_object
     const char* area = this->getStringFromJson(json_in, "area");
-    int area_no = 0;
+    int area_no = stm::StmAreaNoNone;
     if (nullptr != area) {
-        // Convert name to number
-        area_no = areaname2no_[area];
-        HMI_DEBUG("wm:pm", "area(%s:%d)", area, area_no);
+        auto itr = this->areaname2no.find(area);
+        if (this->areaname2no.end() != itr) {
+            area_no = this->areaname2no[area];
+            HMI_DEBUG("wm:pm", "area(%s:%d)", area, area_no);
+        }
+    }
+
+    // If role is set and area is not set, use default area
+    if ((stm::StmAreaNoNone == area_no)
+        && (stm::StmCtgNoNone != category_no)) {
+        std::string def_area = this->role2defaultarea[role];
+        area_no = this->areaname2no[def_area];
+        HMI_DEBUG("wm:pm", "area(%s:%d)", def_area.c_str(), area_no);
     }
 
-    // Check policy
-    checkPolicyEntry((event_no | category_no | area_no), 0, role);
+    // Set event info to the queue
+    EventInfo event_info;
+    int event_id = STM_CREATE_EVENT_ID(event_no, category_no, area_no);
+    event_info.event = event_id;
+    event_info.role = std::string(role);
+    event_info.delay = 0;
+    this->event_info_queue.push(event_info);
 
     return 0;
 }
 
-std::string PolicyManager::roleToCategory(const char* role) {
-    return this->role2category_[role];
+int PolicyManager::executeStateTransition() {
+    HMI_DEBUG("wm:pm", "Call");
+
+    int ret;
+    EventInfo event_info;
+
+    while (!this->event_info_queue.empty()) {
+        // Get event info from queue and delete
+        event_info = this->event_info_queue.front();
+        this->event_info_queue.pop();
+
+        // Set event info for checking policy
+        ret = this->setStateTransitionProcessToSystemd(event_info.event, event_info.delay, event_info.role);
+    }
+    return ret;
+}
+
+void PolicyManager::undoState() {
+    HMI_DEBUG("wm:pm", "Call");
+
+    // Undo state of STM
+    stm::stmUndoState();
+
+    this->crr_layers = this->prv_layers;
 }
 
 extern const char* kDefaultRoleDb;
@@ -833,26 +853,26 @@ int PolicyManager::loadRoleDb() {
             std::string role = this->deleteSpace(*itr);
             std::string area = this->deleteSpace(vct_areas[0]);
 
-            this->role2category_[role] = std::string(category);
-            this->role2defaultarea_[role] = area;
+            this->role2category[role] = std::string(category);
+            this->role2defaultarea[role] = area;
         }
 
-        this->category2role_[std::string(category)] = std::string(roles);
+        this->category2role[std::string(category)] = std::string(roles);
     }
 
     // Check
-    HMI_DEBUG("wm:pm", "Check role2category_");
-    for (auto& x:this->role2category_){
+    HMI_DEBUG("wm:pm", "Check role2category");
+    for (auto& x:this->role2category){
         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
     }
 
-    HMI_DEBUG("wm:pm", "Check role2defaultarea_");
-    for (auto& x:this->role2defaultarea_){
+    HMI_DEBUG("wm:pm", "Check role2defaultarea");
+    for (auto& x:this->role2defaultarea){
         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
     }
 
-    HMI_DEBUG("wm:pm", "Check category2role_");
-    for (auto& x:this->category2role_){
+    HMI_DEBUG("wm:pm", "Check category2role");
+    for (auto& x:this->category2role){
         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
     }
 
@@ -861,7 +881,7 @@ int PolicyManager::loadRoleDb() {
 
 extern const char* kDefaultLayoutDb;
 int PolicyManager::loadLayoutDb() {
-    HMI_DEBUG("wm:lm", "Call");
+    HMI_DEBUG("wm:pm", "Call");
 
     // Get afm application installed dir
     char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
@@ -919,12 +939,12 @@ int PolicyManager::loadLayoutDb() {
         HMI_DEBUG("wm:pm", "json_area_array len:%d", len_area);
         HMI_DEBUG("wm:pm", "json_area_array dump:%s", json_object_get_string(json_area_array));
 
-        pm::LayoutState layout_state;
-        pm::AreaState area_state;
+        LayoutState layout_state;
+        AreaState area_state;
         std::map<std::string, int> category_num;
-        for (int ctg_no = stm::gStmCategoryNoMin;
-             ctg_no <= stm::gStmCategoryNoMax; ctg_no++) {
-            const char* ctg_name = stm::gStmCategoryName[ctg_no];
+        for (int ctg_no = stm::StmCtgNoMin;
+             ctg_no <= stm::StmCtgNoMax; ctg_no++) {
+            const char* ctg_name = stm::kStmCategoryName[ctg_no];
             category_num[ctg_name] = 0;
         }
 
@@ -954,8 +974,12 @@ int PolicyManager::loadLayoutDb() {
             if (nullptr != role) {
                 // Role is NOT essential here
                 area_state.role = std::string(role);
-                HMI_DEBUG("wm:pm", ">>> role:%s", role);
             }
+            else {
+                area_state.role = std::string("");
+
+            }
+            HMI_DEBUG("wm:pm", ">>> role:%s", role);
 
             layout_state.area_list.push_back(area_state);
 
@@ -963,18 +987,18 @@ int PolicyManager::loadLayoutDb() {
 
         layout_state.name = layout;
         layout_state.category_num = category_num;
-        pm::g_default_layouts[layout] = layout_state;
+        this->default_layouts[layout] = layout_state;
     }
 
     // initialize for none layout
-    pm::LayoutState none_layout_state;
+    LayoutState none_layout_state;
     memset(&none_layout_state, 0, sizeof(none_layout_state));
     none_layout_state.name                 = "none";
-    pm::g_default_layouts["none"] = none_layout_state;
+    this->default_layouts["none"] = none_layout_state;
 
     // Check
-    for(auto itr_layout = pm::g_default_layouts.begin();
-      itr_layout != pm::g_default_layouts.end(); ++itr_layout) {
+    for(auto itr_layout = this->default_layouts.begin();
+      itr_layout != this->default_layouts.end(); ++itr_layout) {
         HMI_DEBUG("wm:pm", ">>> layout:%s", itr_layout->first.c_str());
 
         for (auto itr_area = itr_layout->second.area_list.begin();
@@ -982,13 +1006,6 @@ int PolicyManager::loadLayoutDb() {
             HMI_DEBUG("wm:pm", ">>> >>> area    :%s", itr_area->name.c_str());
             HMI_DEBUG("wm:pm", ">>> >>> category:%s", itr_area->category.c_str());
             HMI_DEBUG("wm:pm", ">>> >>> role    :%s", itr_area->role.c_str());
-#if 0
-            for (auto itr_role = itr_area->second.begin();
-              itr_role != itr_area->second.end(); ++itr_role) {
-                HMI_DEBUG("wm:pm", ">>> >>> >>> attribute:%s, name:%s",
-                          itr_role->first.c_str(), itr_role->second.c_str());
-            }
-#endif
         }
     }