PolicyManager uses layout information
[apps/agl-service-windowmanager.git] / src / policy_manager / policy_manager.cpp
index 351c7ce..73f9350 100644 (file)
@@ -19,6 +19,7 @@
 #include <sstream>
 #include <istream>
 #include <thread>
+#include <map>
 #include <systemd/sd-event.h>
 #include <json-c/json.h>
 #include "policy_manager.hpp"
@@ -32,18 +33,20 @@ extern "C" {
 
 
 namespace pm {
-struct EventData {
-    explicit EventData(int event, PolicyManager::Handler handler) {
-        this->event = event;
-        this->handler = handler;
-    };
-    ~EventData() = default;
-
-    int event;
-    PolicyManager::Handler handler;
-};
+typedef std::unordered_map<std::string, std::string>  AppAttribute;
+typedef std::unordered_map<std::string, AppAttribute> AreasState;
+typedef std::unordered_map<std::string, AreasState>   LayoutState;
+typedef std::unordered_map<std::string, LayoutState>  LayersState;
+
+struct sd_event* event_loop;
+std::map<int, struct sd_event_source*> event_source_list;
+PolicyManager::CallbackTable callback;
+LayersState g_prv_layers;
+LayersState g_crr_layers;
+LayoutState g_default_layout_state;
 }  // namespace pm
 
+
 PolicyManager::PolicyManager() :
   eventname2no_(),
   categoryname2no_(),
@@ -83,6 +86,27 @@ int PolicyManager::initialize() {
         return ret;
     }
 
+    // Load layout.db
+    ret = this->loadLayoutDb();
+    if (0 > ret) {
+        HMI_ERROR("wm:pm", "Load layout.db Error!!");
+        return ret;
+    }
+
+    // Initialize current/previous state of layers
+    pm::AppAttribute init_app;
+    pm::AreasState init_area;
+    pm::LayoutState init_layout;
+    init_app["role"] = "none";
+    init_area["none"] = init_app;
+    init_layout["none"] = init_area;
+
+    pm::g_crr_layers["homescreen"]  = init_layout;
+    pm::g_crr_layers["apps"]        = init_layout;
+    pm::g_crr_layers["restriction"] = init_layout;
+    pm::g_crr_layers["on_screen"]   = init_layout;
+    pm::g_prv_layers = pm::g_crr_layers;
+
     // Initialize StateTransitioner
     stm::stmInitialize();
 
@@ -98,7 +122,7 @@ int PolicyManager::initialize() {
 
 int PolicyManager::initializeSdEventLoop() {
     // Get default event loop object
-    int ret = sd_event_new(&(this->sd_event_));
+    int ret = sd_event_new(&(pm::event_loop));
     if (0 > ret) {
         HMI_ERROR("wm:pm", "Faild to sd_event_default: errno:%d", ret);
         return -1;
@@ -107,7 +131,7 @@ int PolicyManager::initializeSdEventLoop() {
     // Create thread for sd_event and detach
     std::thread sd_event_loop([this]() {
         while (1) {
-            sd_event_run(this->sd_event_, 1000);
+            sd_event_run(pm::event_loop, 1000);
         }
     });
     sd_event_loop.detach();
@@ -131,19 +155,160 @@ static void addStateToJson(
     json_object_object_add(*json_out, key, json_obj);
 }
 
-static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
+static int checkPolicyEntry(int event, uint64_t delay_ms);
+static int checkPolicy(sd_event_source *source, void *data) {
     HMI_DEBUG("wm:pm", "Call");
+    HMI_DEBUG("wm:pm", ">>>>>>>>>> START CHECK POLICY");
 
-    pm::EventData *event_data = (pm::EventData*)data;
+    int event = *((int*)data);
+
+    int event_no, category_no, area_no;
+    event_no    = event & STM_MSK_EVT_NO;
+    category_no = event & STM_MSK_CTG_NO;
+    area_no     = event & STM_MSK_ARA_NO;
+    HMI_DEBUG("wm:pm", ">>>>>>>>>> event:%s category:%s area:%s",
+              stm::gStmEventName[event_no - 1],
+              stm::gStmCategoryName[(category_no >> 8) - 1],
+              stm::gStmAreaName[(area_no >> 16) - 1]);
 
     // Transition state
     stm::stm_state_t crr_state;
-    int ret = stm::stmTransitionState(event_data->event, &crr_state);
+    int ret = stm::stmTransitionState(event, &crr_state);
     if (0 > ret) {
         HMI_ERROR("wm:pm", "Error!!");
         return -1;
     }
 
+    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 0 // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+    // Store previous layers
+    pm::g_prv_layers = pm::g_crr_layers;
+
+    std::string layer_name = "homescreen";
+
+    // changed?
+    if (crr_state.layer[stm::gStmLayerNoHomescreen].is_changed) {
+        // Get previous layout name of this layer
+        pm::LayoutState prv_layout_state =  pm::g_prv_layers[layer_name];
+        std::string prv_layout_name = prv_homescreen_layout_state.first();
+
+        // Get current layout name of this layer
+        std::string crr_layout_name = std::string(stm::gStmLayoutNo2Name[crr_state.layer[stm::gStmLayerNoHomescreen].state]);
+
+        // Compare layout name
+        pm::LayoutState crr_layout_state;
+        if ("none" == crr_layout_name) {
+            // If current layout is "none",
+            // current areas is set with "none"
+            HMI_DEBUG("wm:pm", "Current layout is \"none\"");
+                HMI_DEBUG("wm:lm", "Current layout is \"none\"");
+                pm::AppAttribute crr_app_attribute;
+                pm::AreasState crr_areas_state;
+                crr_app_attribute["role"] = "none";
+                crr_areas_state["none"] = "none";
+                crr_layout_state["none"] = crr_areas_state;
+        }
+        else {
+            if (prv_layout_name == crr_layout_name) {
+                // If previous layout is same with current,
+                // previous areas are copied to current
+                crr_layout_state[crr_layout_name] = pm::g_prv_layers[layer_name][crr_layout_name];
+            }
+            else {
+                // If previous layout is same with current,
+                // previous areas are copied to current
+                crr_layout_state[crr_layout_name] = this->default_layout_state[crr_layout_name];
+            }
+
+            // 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 {
+                    HMI_DEBUG("wm:lm", "Get new_area for new role");
+                    // Get new_area for new role
+                    std::string new_area = this->getAreaName(this->layout_define_[crr_layout_name],
+                                                             new_role, category);
+
+                    if ("none" == new_area) {
+                        HMI_DEBUG("wm:lm", "It is not necessary to update role of areas in this layer, because new_role is not specified for this layer");
+                    }
+                    else {
+                        // Is there new_area?
+                        // if there is new_area, set new role there
+
+                        // if NOT, find same category of new_role
+                            // pop old role and shift area
+                            // push new role and set area
+
+
+                        // Update role in new area
+                        // because new_role is specified for this layer
+                        TypeRolCtg crr_role;
+                        crr_role["role"] = std::string(new_role);
+                        crr_layout[crr_layout_name][new_area] = crr_role;
+                    }
+                }
+            }
+        }
+
+        // Update current layout of this layer
+        pm::g_crr_layers[layer_name] = crr_layout_state;
+
+    }
+#endif // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+
     json_object* json_out = json_object_new_object();
 
     // Create result
@@ -152,66 +317,55 @@ static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
     //         "is_changed": <bool>,
     //         "state": <const char*>
     //     },
-    HMI_DEBUG("wm", "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]);
     addStateToJson("parking_brake",
-                         crr_state.parking_brake.is_changed,
-                         stm::gStmParkingBrakeStateNo2Name[crr_state.parking_brake.state],
-                         &json_out);
+                   crr_state.parking_brake.is_changed,
+                   stm::gStmParkingBrakeStateNo2Name[crr_state.parking_brake.state],
+                   &json_out);
 
     //     "accel_pedal": {
     //         "is_changed": <bool>,
     //         "state": <const char*>
     //     },
-    HMI_DEBUG("wm", "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]);
     addStateToJson("accel_pedal",
-                         crr_state.accel_pedal.is_changed,
-                         stm::gStmAccelPedalStateNo2Name[crr_state.accel_pedal.state],
-                         &json_out);
+                   crr_state.accel_pedal.is_changed,
+                   stm::gStmAccelPedalStateNo2Name[crr_state.accel_pedal.state],
+                   &json_out);
 
     //     "lightstatus_brake": {
     //         "is_changed": <bool>,
     //         "state": <const char*>
     //     },
-    HMI_DEBUG("wm", "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]);
     addStateToJson("lightstatus_brake",
-                         crr_state.lightstatus_brake.is_changed,
-                         stm::gStmLightstatusBrakeStateNo2Name[crr_state.lightstatus_brake.state],
-                         &json_out);
+                   crr_state.lightstatus_brake.is_changed,
+                   stm::gStmLightstatusBrakeStateNo2Name[crr_state.lightstatus_brake.state],
+                   &json_out);
 
     //     "car": {
     //         "is_changed": <bool>,
     //         "state": <const char*>
     //     },
-    HMI_DEBUG("wm", "car state (is_changed:%d state:%d:%s)",
-              crr_state.car.is_changed,
-              crr_state.car.state,
-              stm::gStmCarStateNo2Name[crr_state.car.state]);
     addStateToJson("car",
-                         crr_state.car.is_changed,
-                         stm::gStmCarStateNo2Name[crr_state.car.state],
-                         &json_out);
+                   crr_state.car.is_changed,
+                   stm::gStmCarStateNo2Name[crr_state.car.state],
+                   &json_out);
 
     //     "lamp": {
     //         "is_changed": <bool>,
     //         "state": <const char*>
     //     },
-    HMI_DEBUG("wm", "lamp state (is_changed:%d state:%d:%s)",
-              crr_state.lamp.is_changed,
-              crr_state.lamp.state,
-              stm::gStmLampStateNo2Name[crr_state.lamp.state]);
     addStateToJson("lamp",
-                         crr_state.lamp.is_changed,
-                         stm::gStmLampStateNo2Name[crr_state.lamp.state],
-                         &json_out);
+                   crr_state.lamp.is_changed,
+                   stm::gStmLampStateNo2Name[crr_state.lamp.state],
+                   &json_out);
+
+    //     "restriction_mode": {
+    //         "is_changed": <bool>,
+    //         "state": <const char*>
+    //     },
+    addStateToJson("restriction_mode",
+                   crr_state.restriction_mode.is_changed,
+                   stm::gStmRestrictionModeStateNo2Name[crr_state.restriction_mode.state],
+                   &json_out);
 
     //     "layers": [
     json_object* json_layer = json_object_new_array();
@@ -225,15 +379,11 @@ static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
     //         },
     //     ]
     // }
-    HMI_DEBUG("wm", "homescreen state (is_changed:%d state:%d:%s)",
-              crr_state.layer.homescreen.is_changed,
-              crr_state.layer.homescreen.state,
-              stm::gStmLayoutNo2Name[crr_state.layer.homescreen.state]);
     json_tmp = json_object_new_object();
     addStateToJson("homescreen",
-                         crr_state.layer.homescreen.is_changed,
-                         stm::gStmLayoutNo2Name[crr_state.layer.homescreen.state],
-                         &json_tmp);
+                   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);
 
     //         {
@@ -242,15 +392,11 @@ static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
     //                 "state": <const char*>
     //             }
     //         },
-    HMI_DEBUG("wm", "apps state (is_changed:%d state:%d:%s)",
-              crr_state.layer.apps.is_changed,
-              crr_state.layer.apps.state,
-              stm::gStmLayoutNo2Name[crr_state.layer.apps.state]);
     json_tmp = json_object_new_object();
     addStateToJson("apps",
-                         crr_state.layer.apps.is_changed,
-                         stm::gStmLayoutNo2Name[crr_state.layer.apps.state],
-                         &json_tmp);
+                   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);
 
     //         {
@@ -259,15 +405,11 @@ static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
     //                 "state": <const char*>
     //             }
     //         },
-    HMI_DEBUG("wm", "restriction state (is_changed:%d state:%d:%s)",
-              crr_state.layer.restriction.is_changed,
-              crr_state.layer.restriction.state,
-              stm::gStmLayoutNo2Name[crr_state.layer.restriction.state]);
     json_tmp = json_object_new_object();
     addStateToJson("restriction",
-                         crr_state.layer.restriction.is_changed,
-                         stm::gStmLayoutNo2Name[crr_state.layer.restriction.state],
-                         &json_tmp);
+                   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);
 
     //         {
@@ -276,61 +418,111 @@ static int checkPolicy(sd_event_source *source, uint64_t usec, void *data) {
     //                 "state": <const char*>
     //             }
     //         },
-    HMI_DEBUG("wm", "on_screen state (is_changed:%d state:%d:%s)",
-              crr_state.layer.on_screen.is_changed,
-              crr_state.layer.on_screen.state,
-              stm::gStmLayoutNo2Name[crr_state.layer.on_screen.state]);
     json_tmp = json_object_new_object();
     addStateToJson("on_screen",
-                         crr_state.layer.on_screen.is_changed,
-                         stm::gStmLayoutNo2Name[crr_state.layer.on_screen.state],
-                         &json_tmp);
+                   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);
 
-    // Call event handler
-    event_data->handler(json_out);
+    // Notify state is changed
+    if (nullptr != pm::callback.onStateTransitioned) {
+        pm::callback.onStateTransitioned(json_out);
+    }
+
+    if (crr_state.car.is_changed) {
+        if (stm::gStmCarStateNoRun == crr_state.car.state) {
+            // Set delay event(restriction mode on)
+            checkPolicyEntry(STM_EVT_NO_RESTRICTION_MODE_ON, 3000);
+        }
+        else if (stm::gStmCarStateNoStop == crr_state.car.state) {
+            // Set event(restriction mode off)
+            checkPolicyEntry(STM_EVT_NO_RESTRICTION_MODE_OFF, 0);
+
+            // Stop timer for restriction on event
+            if (pm::event_source_list.find(STM_EVT_NO_RESTRICTION_MODE_ON)
+              != pm::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];
+                int ret = sd_event_source_set_enabled(event_source, SD_EVENT_OFF);
+                if (0 > ret) {
+                    HMI_ERROR("wm:pm", "Failed to stop timer");
+                }
+            }
+        }
+    }
 
     // Release json_object
     json_object_put(json_out);
 
     // Release data
-    delete (pm::EventData*)data;
+    delete (int*)data;
 
-    // Destroy sd_event_soutce object
+    // Destroy sd_event_source object
     sd_event_source_unref(source);
 
+    // Remove event source from list
+    if (pm::event_source_list.find(event) != pm::event_source_list.end()) {
+        pm::event_source_list.erase(event);
+    }
+
+    HMI_DEBUG("wm:pm", ">>>>>>>>>> FINISH CHECK POLICY");
     return 0;
 }
 
-void PolicyManager::checkPolicyEntry(int event, int delay_ms, PolicyManager::Handler handler)
+static int timerEvent(sd_event_source *source, uint64_t usec, void *data) {
+    checkPolicy(source, data);
+};
+
+static int checkPolicyEntry(int event, uint64_t delay_ms)
 {
     HMI_DEBUG("wm:pm", "Call");
+    HMI_DEBUG("wm:pm", "event:0x%x", event);
 
-    // Create event data
-    pm::EventData *event_data = new pm::EventData(event, handler);
+    if (0 == delay_ms) {
+        int ret = sd_event_add_defer(pm::event_loop, NULL,
+                                     &checkPolicy, new int(event));
+        if (0 > ret) {
+            HMI_ERROR("wm:pm", "Faild to sd_event_add_defer: errno:%d", ret);
+            return -1;
+        }
+    }
+    else {
+        // Get current time
+        struct timespec time_spec;
+        clock_gettime(CLOCK_MONOTONIC, &time_spec);
+
+        // Calculate timer fired time
+        uint64_t usec = (time_spec.tv_sec * 1000000)
+            + (time_spec.tv_nsec / 1000)
+            + (delay_ms * 1000);
+
+        // 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));
+        if (0 > ret) {
+            HMI_ERROR("wm:pm", "Faild to sd_event_add_time: errno:%d", ret);
+            return -1;
+        }
 
-    // Get current time
-    struct timespec time_spec;
-    clock_gettime(CLOCK_MONOTONIC, &time_spec);
+        // Store event source
+        pm::event_source_list[event] = event_source;
+    }
 
-    // Calculate timer fired time
-    uint64_t usec = (time_spec.tv_sec * 1000000)
-                    + (time_spec.tv_nsec / 1000)
-                    + (delay_ms * 1000);
+    return 0;
+}
 
-    // Set timer
-    int ret = sd_event_add_time(this->sd_event_, NULL, CLOCK_MONOTONIC, usec, 1,
-                                &checkPolicy, event_data);
-    if (0 > ret) {
-        HMI_ERROR("wm:pm", "Faild to sd_event_add_time: errno:%d", ret);
-        return;
-    }
+void PolicyManager::registerCallback(CallbackTable callback) {
+    pm::callback.onStateTransitioned = callback.onStateTransitioned;
+    pm::callback.onError             = callback.onError;
 }
 
-int PolicyManager::inputEvent(json_object* json_in, PolicyManager::Handler notify_state) {
+int PolicyManager::inputEvent(json_object* json_in) {
     HMI_DEBUG("wm:pm", "Call");
 
     // Check arguments
@@ -376,10 +568,8 @@ int PolicyManager::inputEvent(json_object* json_in, PolicyManager::Handler notif
         HMI_DEBUG("wm:pm", "area(%s:%d)", area, area_no);
     }
 
-    HMI_DEBUG("wm:pm", "set event:0x%x", (event_no | category_no | area_no));
-
     // Check policy
-    this->checkPolicyEntry((event_no | category_no | area_no), 0, notify_state);
+    checkPolicyEntry((event_no | category_no | area_no), 0);
 
     return 0;
 }
@@ -480,6 +670,124 @@ int PolicyManager::loadRoleDb() {
     return 0;
 }
 
+extern const char* kDefaultLayoutDb;
+int PolicyManager::loadLayoutDb() {
+    HMI_DEBUG("wm:lm", "Call");
+
+    // Get afm application installed dir
+    char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
+    HMI_DEBUG("wm:pm", "afm_app_install_dir:%s", afm_app_install_dir);
+
+    std::string file_name;
+    if (!afm_app_install_dir) {
+        HMI_ERROR("wm:pm", "AFM_APP_INSTALL_DIR is not defined");
+    }
+    else {
+        file_name = std::string(afm_app_install_dir) + std::string("/etc/layout.db");
+    }
+
+    // Load layout.db
+    json_object* json_obj;
+    int ret = this->inputJsonFilie(file_name.c_str(), &json_obj);
+    if (0 > ret) {
+        HMI_DEBUG("wm:pm", "Could not open layout.db, so use default layout information");
+        json_obj = json_tokener_parse(kDefaultLayoutDb);
+    }
+    HMI_DEBUG("wm:pm", "json_obj dump:%s", json_object_get_string(json_obj));
+
+    // Perse layouts
+    HMI_DEBUG("wm:pm", "Perse layouts");
+    json_object* json_cfg;
+    if (!json_object_object_get_ex(json_obj, "layouts", &json_cfg)) {
+        HMI_ERROR("wm:pm", "Parse Error!!");
+        return -1;
+    }
+
+    int len = json_object_array_length(json_cfg);
+    HMI_DEBUG("wm:pm", "json_cfg len:%d", len);
+    HMI_DEBUG("wm:pm", "json_cfg dump:%s", json_object_get_string(json_cfg));
+
+    const char* layout;
+    const char* role;
+    const char* category;
+    for (int i=0; i<len; i++) {
+        json_object* json_tmp = json_object_array_get_idx(json_cfg, i);
+
+        layout = this->getStringFromJson(json_tmp, "name");
+        if (nullptr == layout) {
+            HMI_ERROR("wm:pm", "Parse Error!!");
+            return -1;
+        }
+        HMI_DEBUG("wm:pm", "> layout:%s", layout);
+
+        json_object* json_area_array;
+        if (!json_object_object_get_ex(json_tmp, "areas", &json_area_array)) {
+          HMI_ERROR("wm:pm", "Parse Error!!");
+          return -1;
+        }
+
+        int len_area = json_object_array_length(json_area_array);
+        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::AreasState areas_state;
+        for (int j=0; j<len_area; j++) {
+            json_object* json_area = json_object_array_get_idx(json_area_array, j);
+
+            // Get area name
+            const char* area = this->getStringFromJson(json_area, "name");
+            if (nullptr == area) {
+              HMI_ERROR("wm:pm", "Parse Error!!");
+              return -1;
+            }
+            HMI_DEBUG("wm:pm", ">> area:%s", area);
+
+            // Get app attribute of the area
+            pm::AppAttribute app_attribute;
+            category = this->getStringFromJson(json_area, "category");
+            if (nullptr == category) {
+                HMI_ERROR("wm:pm", "Parse Error!!");
+                return -1;
+            }
+            app_attribute["category"] = std::string(category);
+            HMI_DEBUG("wm:pm", ">>> category:%s", category);
+
+            role = this->getStringFromJson(json_area, "role");
+            if (nullptr != role) {
+                // Role is NOT essential here
+                app_attribute["role"] = std::string(role);
+                HMI_DEBUG("wm:pm", ">>> role:%s", role);
+            }
+
+            areas_state[area] = app_attribute;
+        }
+
+        pm::g_default_layout_state[layout] = areas_state;
+    }
+
+    // Check
+    for(auto itr_layout = pm::g_default_layout_state.begin();
+      itr_layout != pm::g_default_layout_state.end(); ++itr_layout) {
+        HMI_DEBUG("wm:pm", ">>> layout:%s", itr_layout->first.c_str());
+
+        for (auto itr_area = itr_layout->second.begin();
+          itr_area != itr_layout->second.end(); ++itr_area) {
+            HMI_DEBUG("wm:pm", ">>> >>> area:%s", itr_area->first.c_str());
+
+            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());
+            }
+        }
+    }
+
+    // Release json_object
+    json_object_put(json_obj);
+
+    return 0;
+}
+
 // TODO:
 // This function will be removed because json_helper has same function.
 // json_helper should be library.
@@ -620,3 +928,163 @@ const char* kDefaultRoleDb = "{ \
     } \
     ] \
 }";
+
+
+const char* kDefaultLayoutDb = "{ \
+    \"layouts\": [ \
+        { \
+            \"name\": \"pu\", \
+            \"layer\": \"on_screen\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"pop_up\", \
+                    \"role\": \"incomming_call\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"sa\", \
+            \"layer\": \"on_screen\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"system_alert\", \
+                    \"role\": \"system_alert\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"m1\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"normal\", \
+                    \"role\": \"map\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"m2\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"split.main\", \
+                    \"role\": \"map\" \
+                }, \
+                { \
+                    \"name\": \"split.sub\", \
+                    \"category\": \"hvac\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"mf\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"full\", \
+                    \"role\": \"map\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"s1\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"normal\", \
+                    \"category\": \"splitable\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"s2\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"split.main\", \
+                    \"category\": \"splitable\" \
+                }, \
+                { \
+                    \"name\": \"split.sub\", \
+                    \"category\": \"splitable\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"g\", \
+            \"layer\": \"apps\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"normal\", \
+                    \"category\": \"general\" \
+                } \
+            ] \
+        }, \
+        { \
+            \"name\": \"hs\", \
+            \"layer\": \"homescreen\", \
+            \"areas\": [ \
+                { \
+                    \"name\": \"full\", \
+                    \"role\": \"homescreen\" \
+                } \
+            ] \
+        } \
+    ], \
+    \"areas\": [ \
+        { \
+            \"name\": \"normal\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 218, \
+                \"w\": 1080, \
+                \"h\": 1488 \
+            } \
+        }, \
+        { \
+            \"name\": \"split.main\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 218, \
+                \"w\": 1080, \
+                \"h\": 744 \
+            } \
+        }, \
+        { \
+            \"name\": \"split.sub\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 962, \
+                \"w\": 1080, \
+                \"h\": 744 \
+            } \
+        }, \
+        { \
+            \"name\": \"full\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 0, \
+                \"w\": 1080, \
+                \"h\": 1920 \
+            } \
+        }, \
+        { \
+            \"name\": \"pop_up\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 640, \
+                \"w\": 1080, \
+                \"h\": 640 \
+            } \
+        }, \
+        { \
+            \"name\": \"system_alert\", \
+            \"rect\": { \
+                \"x\": 0, \
+                \"y\": 640, \
+                \"w\": 1080, \
+                \"h\": 640 \
+            } \
+        } \
+    ] \
+}";