src/widget_app.c

   1 /*
   2  * Copyright (c) 2015 - 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17
  18 #include <stdlib.h>
  19
  20 #include <bundle.h>
  21 #include <bundle_internal.h>
  22 #include <aul.h>
  23 #include <dlog.h>
  24 #include <glib.h>
  25 #include <glib-object.h>
  26 #include <stdlib.h>
  27 #include <app_control.h>
  28 #include <app_control_internal.h>
  29 #include <Elementary.h>
  30 #include <widget_errno.h>
  31 #include <widget_instance.h>
  32 #include <widget_service_internal.h>
  33 #include <aul_app_com.h>
  34 #include <Ecore_Wayland.h>
  35 #include <system_info.h>
  36
  37 #include "widget_app.h"
  38 #include "widget-log.h"
  39 #include "widget-private.h"
  40 #include "widget_app_internal.h"
  41
  42 #ifdef LOG_TAG
  43 #undef LOG_TAG
  44 #endif
  45
  46 #define STR_MAX_BUF 128
  47 #define LOG_TAG "CAPI_WIDGET_APPLICATION"
  48 #define K_REASON    "__WC_K_REASON__"
  49
  50 typedef enum _widget_obj_state_e {
  51         WC_READY = 0,
  52         WC_RUNNING = 1,
  53         WC_PAUSED = 2,
  54         WC_TERMINATED = 3
  55 } widget_obj_state_e;
  56
  57 struct app_event_handler {
  58         app_event_type_e type;
  59         app_event_cb cb;
  60         void *data;
  61 };
  62
  63 struct app_event_info {
  64         app_event_type_e type;
  65         void *value;
  66 };
  67
  68 struct _widget_class {
  69         void *user_data;
  70         widget_instance_lifecycle_callback_s ops;
  71         char *classid;
  72         struct _widget_class *next;
  73         struct _widget_class *prev;
  74 };
  75
  76 struct _widget_context {
  77         char *id;
  78         struct _widget_class *provider;
  79         int state;
  80         void *tag;
  81         Evas_Object *win;
  82         bundle *content;
  83         widget_instance_lifecycle_callback_s ops;
  84 };
  85
  86 typedef struct _widget_class widget_class_s;
  87 typedef struct _widget_context widget_context_s;
  88
  89 static int caller_pid = 0;
  90 static widget_app_lifecycle_callback_s *app_ops;
  91 static void *app_user_data = NULL;
  92 static char *appid = NULL;
  93 static widget_class_h class_provider = NULL;
  94 static GList *contexts = NULL;
  95 static char *viewer_endpoint = NULL;
  96
  97 static inline bool _is_widget_feature_enabled(void)
  98 {
  99         static bool feature = false;
 100         static bool retrieved = false;
 101         int ret;
 102
 103         if (retrieved == true)
 104                 return feature;
 105
 106         ret = system_info_get_platform_bool(
 107                         "http://tizen.org/feature/shell.appwidget", &feature);
 108         if (ret != SYSTEM_INFO_ERROR_NONE) {
 109                 _E("failed to get system info");
 110                 return false;
 111         }
 112
 113         retrieved = true;
 114
 115         return feature;
 116 }
 117
 118 static gint __comp_by_id(gconstpointer a, gconstpointer b)
 119 {
 120         widget_context_s *wc = (widget_context_s *)a;
 121
 122         return strcmp(wc->id, (const char *)b);
 123 }
 124
 125 static widget_context_s *__find_context_by_id(const char *id)
 126 {
 127         GList *ret = g_list_find_custom(contexts, id, __comp_by_id);
 128
 129         if (ret == NULL)
 130                 return NULL;
 131
 132         return ret->data;
 133 }
 134
 135 static int __send_update_status(const char *class_id, const char *instance_id,
 136         int status, bundle *extra, int internal_only)
 137 {
 138         bundle *b = extra;
 139
 140         if (b == NULL)
 141                 b = bundle_create();
 142
 143         bundle_add_str(b, WIDGET_K_ID, class_id);
 144         bundle_add_str(b, WIDGET_K_INSTANCE, instance_id);
 145         bundle_add_byte(b, WIDGET_K_STATUS, &status, sizeof(int));
 146
 147         _E("send update %s(%d) to %s", instance_id, status, viewer_endpoint);
 148         aul_app_com_send(viewer_endpoint, b);
 149
 150         if (extra == NULL)
 151                 bundle_free(b);
 152
 153         return 0;
 154 }
 155
 156 static int __instance_create(widget_class_h handle, const char *id, bundle *b)
 157 {
 158         widget_context_s *wc = NULL;
 159         int w = 0, h = 0;
 160         char *w_str = NULL, *h_str = NULL;
 161         char *remain = NULL;
 162         int ret = 0;
 163
 164         wc = (widget_context_s *)malloc(sizeof(widget_context_s));
 165         if (!wc)
 166                 return WIDGET_ERROR_OUT_OF_MEMORY;
 167
 168         wc->state = WC_READY;
 169         wc->id = g_strdup(id);
 170         wc->provider = handle;
 171         wc->win = NULL;
 172
 173         wc->content = bundle_dup(b);
 174         bundle_get_str(b, WIDGET_K_WIDTH, &w_str);
 175         bundle_get_str(b, WIDGET_K_HEIGHT, &h_str);
 176
 177         if (w_str)
 178                 w = (int)g_ascii_strtoll(w_str, &remain, 10);
 179
 180         if (h_str)
 181                 h = (int)g_ascii_strtoll(h_str, &remain, 10);
 182
 183         contexts = g_list_append(contexts, wc);
 184
 185         handle->ops.create(wc, b, w, h, handle->user_data);
 186         ret = __send_update_status(handle->classid, wc->id,
 187                         WIDGET_INSTANCE_EVENT_CREATE, b, 0);
 188
 189         return ret;
 190 }
 191
 192 static int __instance_destroy(widget_class_h handle, const char *id,
 193                 widget_destroy_type_e reason, bundle *b)
 194 {
 195         widget_context_s *wc = __find_context_by_id(id);
 196         int ret = 0;
 197
 198         if (wc) {
 199                 wc->state = WC_TERMINATED;
 200                 handle->ops.destroy(wc, (widget_app_destroy_type_e)reason, b,
 201                                 handle->user_data);
 202
 203                 ret = __send_update_status(handle->classid, id,
 204                                 WIDGET_INSTANCE_EVENT_TERMINATE, b, 0);
 205
 206                 contexts = g_list_remove(contexts, wc);
 207
 208                 if (wc->id)
 209                         free(wc->id);
 210                 free(wc);
 211         } else {
 212                 _E("could not find widget obj: %s", id);
 213                 ret = WIDGET_ERROR_INVALID_PARAMETER;
 214         }
 215
 216         return ret;
 217 }
 218
 219 static widget_class_h __find_class_handler(const char *class_id,
 220                 widget_class_h handle)
 221 {
 222         if (!class_id || !handle)
 223                 return NULL;
 224
 225         widget_class_h head = handle;
 226
 227         while (head) {
 228                 if (head->classid && strcmp(head->classid, class_id) == 0)
 229                         return head;
 230
 231                 head = head->next;
 232         }
 233
 234         return NULL;
 235 }
 236
 237 static void __control(bundle *b)
 238 {
 239         char *class_id = NULL;
 240         char *id = NULL;
 241         char *operation = NULL;
 242         char *reason = NULL;
 243         char *remain = NULL;
 244         int destroy_type = WIDGET_DESTROY_TYPE_DEFAULT;
 245
 246         widget_class_h handle = NULL;
 247         bundle_get_str(b, WIDGET_K_CLASS, &class_id);
 248         /* for previous version compatibility, use appid for default class id */
 249         if (class_id == NULL)
 250                 class_id = appid;
 251
 252         bundle_get_str(b, WIDGET_K_INSTANCE, &id);
 253         bundle_get_str(b, WIDGET_K_OPERATION, &operation);
 254
 255         handle = __find_class_handler(class_id, class_provider);
 256         if (!handle) {
 257                 _E("no handle provided: %s", class_id);
 258                 goto error;
 259         }
 260
 261         if (!operation) {
 262                 _E("no operation provided");
 263                 goto error;
 264         }
 265
 266         if (strcmp(operation, "create") == 0) {
 267                 __instance_create(handle, id, b);
 268         } else if (strcmp(operation, "resize") == 0) {
 269                 /* TODO */
 270         } else if (strcmp(operation, "update") == 0) {
 271                 /* TODO */
 272         } else if (strcmp(operation, "destroy") == 0) {
 273                 bundle_get_str(b, WIDGET_K_REASON, &reason);
 274                 if (reason)
 275                         destroy_type = (int)g_ascii_strtoll(reason, &remain,
 276                                         10);
 277
 278                 __instance_destroy(handle, id, destroy_type, b);
 279         } else if (strcmp(operation, "resume") == 0) {
 280                 /* TODO */
 281         } else if (strcmp(operation, "pause") == 0) {
 282                 /* TODO */
 283         }
 284
 285         return;
 286 error:
 287         LOGD("error on control");
 288         return;
 289 }
 290
 291 static void __show_all()
 292 {
 293         LOGD("resume");
 294 }
 295
 296 static Eina_Bool __show_cb(void *data, int type, void *event)
 297 {
 298         Ecore_Wl_Event_Window_Show *ev = event;
 299         LOGD("show %d %d", (unsigned int)ev->win, (unsigned int)ev->data[0]);
 300         return ECORE_CALLBACK_RENEW;
 301 }
 302
 303 static Eina_Bool __hide_cb(void *data, int type, void *event)
 304 {
 305         Ecore_Wl_Event_Window_Hide *ev = event;
 306         LOGD("hide %d", (unsigned int)ev->win);
 307         return ECORE_CALLBACK_RENEW;
 308 }
 309
 310 static Eina_Bool __visibility_cb(void *data, int type, void *event)
 311 {
 312         Ecore_Wl_Event_Window_Visibility_Change *ev = event;
 313         LOGD("visiblity change: %d %d", (unsigned int)ev->win,  (unsigned int)ev->fully_obscured);
 314         return ECORE_CALLBACK_RENEW;
 315 }
 316
 317 static Eina_Bool __lower_cb(void *data, int type, void *event)
 318 {
 319         LOGD("lower");
 320         return ECORE_CALLBACK_RENEW;
 321 }
 322
 323 static void __add_climsg()
 324 {
 325         ecore_event_handler_add(ECORE_WL_EVENT_WINDOW_SHOW, __show_cb, NULL);
 326         ecore_event_handler_add(ECORE_WL_EVENT_WINDOW_HIDE, __hide_cb, NULL);
 327         ecore_event_handler_add(ECORE_WL_EVENT_WINDOW_VISIBILITY_CHANGE, __visibility_cb, NULL);
 328         ecore_event_handler_add(ECORE_WL_EVENT_WINDOW_LOWER, __lower_cb, NULL);
 329 }
 330
 331 static int __aul_handler(aul_type type, bundle *b, void *data)
 332 {
 333         char *caller = NULL;
 334         char *remain = NULL;
 335
 336         switch (type) {
 337         case AUL_START:
 338                 if (b) {
 339                         bundle_get_str(b, WIDGET_K_CALLER, &caller);
 340                         if (caller) {
 341                                 caller_pid = g_ascii_strtoll(caller, &remain,
 342                                                 10);
 343                         } else {
 344                                 /* using caller appid and query pid using caller appid? */
 345                                 _E("no caller pid");
 346                         }
 347                 }
 348
 349                 __control(b);
 350                 break;
 351         case AUL_RESUME:
 352                 __show_all();
 353                 break;
 354         case AUL_TERMINATE:
 355                 widget_app_exit();
 356                 break;
 357         default:
 358                 break;
 359         }
 360
 361         return 0;
 362 }
 363
 364 static char *__get_domain_name(char *appid)
 365 {
 366         char *name_token;
 367
 368         if (appid == NULL) {
 369                 _E("appid is NULL");
 370                 return NULL;
 371         }
 372
 373         name_token = strrchr(appid, '.');
 374
 375         if (name_token == NULL) {
 376                 _E("appid is invalid");
 377                 return appid;
 378         }
 379
 380         name_token++;
 381
 382         return name_token;
 383 }
 384
 385 extern int _set_i18n(const char *name);
 386
 387 static int __before_loop(int argc, char **argv)
 388 {
 389         int r;
 390         bundle *kb = NULL;
 391         char *wayland_display = NULL;
 392         char *xdg_runtime_dir = NULL;
 393         char *name;
 394
 395 #if !(GLIB_CHECK_VERSION(2, 36, 0))
 396         g_type_init();
 397 #endif
 398
 399         kb = bundle_import_from_argv(argc, argv);
 400         if (kb) {
 401                 bundle_get_str(kb, AUL_K_WAYLAND_WORKING_DIR, &xdg_runtime_dir);
 402                 bundle_get_str(kb, AUL_K_WAYLAND_DISPLAY, &wayland_display);
 403                 bundle_get_str(kb, WIDGET_K_ENDPOINT, &viewer_endpoint);
 404                 if (viewer_endpoint) {
 405                         _E("viewer endpoint :%s", viewer_endpoint);
 406                         viewer_endpoint = strdup(viewer_endpoint);
 407                 } else {
 408                         _E("endpoint is missing");
 409                 }
 410
 411                 if (xdg_runtime_dir)
 412                         setenv("XDG_RUNTIME_DIR", xdg_runtime_dir, 1);
 413
 414                 if (wayland_display)
 415                         setenv("WAYLAND_DISPLAY", wayland_display, 1);
 416
 417                 bundle_free(kb);
 418                 kb = NULL;
 419         } else {
 420                 _E("failed to get launch argv");
 421         }
 422
 423         elm_init(argc, argv);
 424
 425         r = aul_launch_init(__aul_handler, NULL);
 426         if (r < 0) {
 427                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 428                                 __FUNCTION__,
 429                                 "Fail to call the aul_launch_init");
 430         }
 431
 432         r = aul_launch_argv_handler(argc, argv);
 433         if (r < 0) {
 434                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 435                                 __FUNCTION__,
 436                                 "Fail to call the aul_launch_argv_handler");
 437         }
 438
 439         r = app_get_id(&appid);
 440         if (r != APP_ERROR_NONE)
 441                 return r;
 442
 443         name = __get_domain_name(appid);
 444
 445         if (name == NULL) {
 446                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 447                                 __FUNCTION__,
 448                                 "Fail to call __get_domain_name");
 449         }
 450
 451         r = _set_i18n(name);
 452
 453         if (r < 0) {
 454                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 455                                 __FUNCTION__,
 456                                 "Fail to call _set_i18n");
 457         }
 458
 459         __add_climsg();
 460
 461         class_provider = app_ops->create(app_user_data);
 462         if (class_provider == NULL) {
 463                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 464                                 __FUNCTION__, "widget_class is NULL");
 465         }
 466
 467         return WIDGET_ERROR_NONE;
 468 }
 469
 470 static void __after_loop()
 471 {
 472         if (app_ops->terminate)
 473                 app_ops->terminate(app_user_data);
 474
 475         if (viewer_endpoint)
 476                 free(viewer_endpoint);
 477
 478         elm_shutdown();
 479 }
 480
 481 EXPORT_API int widget_app_main(int argc, char **argv,
 482                 widget_app_lifecycle_callback_s *callback, void *user_data)
 483 {
 484         int r;
 485
 486         if (!_is_widget_feature_enabled()) {
 487                 _E("not supported");
 488                 return WIDGET_ERROR_NOT_SUPPORTED;
 489         }
 490
 491         if (argc <= 0 || argv == NULL || callback == NULL)
 492                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 493                                 __FUNCTION__, NULL);
 494
 495         if (callback->create == NULL)
 496                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 497                                 __FUNCTION__,
 498                                 "widget_app_create_cb() callback must be "
 499                                 "registered");
 500
 501         app_ops = callback;
 502         app_user_data = user_data;
 503         r = __before_loop(argc, argv);
 504         if (r < 0)
 505                 return r;
 506
 507         ecore_main_loop_begin();
 508         aul_status_update(STATUS_DYING);
 509         __after_loop();
 510
 511         return WIDGET_ERROR_NONE;
 512 }
 513
 514 EXPORT_API int widget_app_exit(void)
 515 {
 516         if (!_is_widget_feature_enabled()) {
 517                 _E("not supported");
 518                 return WIDGET_ERROR_NOT_SUPPORTED;
 519         }
 520
 521         ecore_main_loop_quit();
 522
 523         return WIDGET_ERROR_NONE;
 524 }
 525
 526 static gboolean __finish_event_cb(gpointer user_data)
 527 {
 528         if (user_data == NULL)
 529                 return FALSE;
 530
 531         widget_context_s *wc = (widget_context_s *)user_data;
 532
 533         switch (wc->state) {
 534         case WC_READY:
 535
 536                 break;
 537         case WC_RUNNING:
 538
 539                 break;
 540         case WC_PAUSED:
 541
 542                 break;
 543         default:
 544                 break;
 545         }
 546
 547
 548         return FALSE;
 549 }
 550
 551 EXPORT_API int widget_app_terminate_context(widget_context_h context)
 552 {
 553         if (!_is_widget_feature_enabled()) {
 554                 _E("not supported");
 555                 return WIDGET_ERROR_NOT_SUPPORTED;
 556         }
 557
 558         if (context == NULL)
 559                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 560                                 __FUNCTION__, NULL);
 561
 562         g_idle_add(__finish_event_cb, context);
 563         return WIDGET_ERROR_NONE;
 564 }
 565
 566 EXPORT_API int widget_app_foreach_context(widget_context_cb cb, void *data)
 567 {
 568         GList *list;
 569         widget_context_s *wc;
 570
 571         if (!_is_widget_feature_enabled()) {
 572                 _E("not supported");
 573                 return WIDGET_ERROR_NOT_SUPPORTED;
 574         }
 575
 576         if (!cb)
 577                 return WIDGET_ERROR_INVALID_PARAMETER;
 578
 579         list = g_list_first(contexts);
 580
 581         while (list) {
 582                 wc = (widget_context_s *)list->data;
 583                 if (wc) {
 584                         if (!cb(wc, data))
 585                                 break;
 586                 }
 587                 list = list->next;
 588         }
 589
 590         return WIDGET_ERROR_NONE;
 591 }
 592
 593 EXPORT_API int widget_app_add_event_handler(app_event_handler_h *event_handler,
 594                 app_event_type_e event_type, app_event_cb callback,
 595                 void *user_data)
 596 {
 597         if (!_is_widget_feature_enabled()) {
 598                 _E("not supported");
 599                 return WIDGET_ERROR_NOT_SUPPORTED;
 600         }
 601
 602         /* TODO */
 603         if (!event_handler || !callback)
 604                 return WIDGET_ERROR_INVALID_PARAMETER;
 605
 606         switch (event_type) {
 607         case APP_EVENT_LOW_MEMORY:
 608         case APP_EVENT_LOW_BATTERY:
 609         case APP_EVENT_LANGUAGE_CHANGED:
 610         case APP_EVENT_DEVICE_ORIENTATION_CHANGED:
 611         case APP_EVENT_REGION_FORMAT_CHANGED:
 612         case APP_EVENT_SUSPENDED_STATE_CHANGED:
 613
 614                 break;
 615         default:
 616                 return WIDGET_ERROR_INVALID_PARAMETER;
 617         }
 618
 619         return WIDGET_ERROR_NONE;
 620 }
 621
 622 EXPORT_API int widget_app_remove_event_handler(app_event_handler_h
 623                                                 event_handler)
 624 {
 625         if (!_is_widget_feature_enabled()) {
 626                 _E("not supported");
 627                 return WIDGET_ERROR_NOT_SUPPORTED;
 628         }
 629
 630         /* TODO */
 631         if (!event_handler)
 632                 return WIDGET_ERROR_INVALID_PARAMETER;
 633
 634         return WIDGET_ERROR_NONE;
 635 }
 636
 637 EXPORT_API const char *widget_app_get_id(widget_context_h context)
 638 {
 639         if (!_is_widget_feature_enabled()) {
 640                 _E("not supported");
 641                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 642                 return NULL;
 643         }
 644
 645         if (!context) {
 646                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 647                 return NULL;
 648         }
 649
 650         set_last_result(WIDGET_ERROR_NONE);
 651         return context->id;
 652 }
 653
 654 EXPORT_API int widget_app_get_elm_win(widget_context_h context,
 655                                         Evas_Object **win)
 656 {
 657         widget_context_s *cxt = (widget_context_s *)context;
 658         Evas_Object *ret_win;
 659         Ecore_Wl_Window *wl_win;
 660
 661         if (!_is_widget_feature_enabled()) {
 662                 _E("not supported");
 663                 return WIDGET_ERROR_NOT_SUPPORTED;
 664         }
 665
 666         if (context == NULL || win == NULL)
 667                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 668                                 __FUNCTION__, NULL);
 669
 670         ret_win = elm_win_add(NULL, cxt->id, ELM_WIN_BASIC);
 671         if (ret_win == NULL) {
 672                 _E("failed to create window");
 673                 return WIDGET_ERROR_FAULT;
 674         }
 675
 676         wl_win = elm_win_wl_window_get(ret_win);
 677         if (wl_win == NULL) {
 678                 _E("failed to get wayland window");
 679                 evas_object_del(ret_win);
 680                 return WIDGET_ERROR_FAULT;
 681         }
 682
 683         ecore_wl_window_class_name_set(wl_win, cxt->id);
 684
 685         *win = ret_win;
 686         cxt->win = ret_win;
 687
 688         return WIDGET_ERROR_NONE;
 689 }
 690
 691 widget_class_h _widget_class_create(widget_class_s *prev, const char *class_id,
 692                 widget_instance_lifecycle_callback_s callback, void *user_data)
 693 {
 694         widget_class_s *wc;
 695
 696         if (!_is_widget_feature_enabled()) {
 697                 _E("not supported");
 698                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 699                 return NULL;
 700         }
 701
 702         if (class_id == NULL) {
 703                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 704                 return NULL;
 705         }
 706
 707         wc = (widget_class_s *)malloc(sizeof(widget_class_s));
 708         if (wc == NULL) {
 709                 _E("failed to malloc : %s", __FUNCTION__);
 710                 set_last_result(WIDGET_ERROR_OUT_OF_MEMORY);
 711                 return NULL;
 712         }
 713
 714         wc->classid = strdup(class_id);
 715         wc->user_data = user_data;
 716         wc->ops = callback;
 717         wc->next = prev;
 718         wc->prev = NULL;
 719
 720         set_last_result(WIDGET_ERROR_NONE);
 721
 722         if (prev)
 723                 prev->prev = wc;
 724
 725         return wc;
 726 }
 727
 728 EXPORT_API widget_class_h widget_app_class_add(widget_class_h widget_class,
 729                 const char *class_id,
 730                 widget_instance_lifecycle_callback_s callback, void *user_data)
 731 {
 732         return _widget_class_create(widget_class, class_id, callback,
 733                         user_data);
 734 }
 735
 736 EXPORT_API widget_class_h widget_app_class_create(
 737                 widget_instance_lifecycle_callback_s callback, void *user_data)
 738 {
 739         return _widget_class_create(class_provider, appid, callback, user_data);
 740 }
 741
 742 EXPORT_API int widget_app_context_set_tag(widget_context_h context, void *tag)
 743 {
 744         if (!_is_widget_feature_enabled()) {
 745                 _E("not supported");
 746                 return WIDGET_ERROR_NOT_SUPPORTED;
 747         }
 748
 749         if (context == NULL)
 750                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 751                                 __FUNCTION__, NULL);
 752
 753         context->tag = tag;
 754
 755         return WIDGET_ERROR_NONE;
 756 }
 757
 758 EXPORT_API int widget_app_context_get_tag(widget_context_h context, void **tag)
 759 {
 760         if (!_is_widget_feature_enabled()) {
 761                 _E("not supported");
 762                 return WIDGET_ERROR_NOT_SUPPORTED;
 763         }
 764
 765         if (context == NULL || tag == NULL)
 766                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 767                                 __FUNCTION__, NULL);
 768
 769         *tag = context->tag;
 770
 771         return WIDGET_ERROR_NONE;
 772 }
 773
 774 EXPORT_API int widget_app_context_set_content_info(widget_context_h context,
 775                 bundle *content_info)
 776 {
 777         const char *class_id = NULL;
 778         int ret = 0;
 779
 780         if (!_is_widget_feature_enabled()) {
 781                 _E("not supported");
 782                 return WIDGET_ERROR_NOT_SUPPORTED;
 783         }
 784
 785         if (context == NULL || content_info == NULL)
 786                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 787                                 __FUNCTION__, NULL);
 788
 789         if (context->provider == NULL)
 790                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 791                                 __FUNCTION__, NULL);
 792
 793         class_id = context->provider->classid;
 794
 795         if (class_id == NULL)
 796                 return widget_app_error(WIDGET_ERROR_FAULT, __FUNCTION__, NULL);
 797
 798         ret = __send_update_status(class_id, context->id,
 799                         WIDGET_INSTANCE_EVENT_UPDATE, content_info, true);
 800
 801         if (ret < 0) {
 802                 _E("failed to send content info: %s of %s (%d)", context->id,
 803                                 class_id, ret);
 804                 return widget_app_error(WIDGET_ERROR_IO_ERROR, __FUNCTION__,
 805                                 NULL);
 806         }
 807
 808         return WIDGET_ERROR_NONE;
 809 }
 810
 811 EXPORT_API int widget_app_context_set_title(widget_context_h context,
 812                 const char *title)
 813 {
 814         if (!_is_widget_feature_enabled()) {
 815                 _E("not supported");
 816                 return WIDGET_ERROR_NOT_SUPPORTED;
 817         }
 818
 819         if (!context || !title)
 820                 return WIDGET_ERROR_INVALID_PARAMETER;
 821
 822         if (context->win)
 823                 elm_win_title_set(context->win, title);
 824
 825         return WIDGET_ERROR_NONE;
 826 }
 827