src/base/widget_base.c

   1 /*
   2  * Copyright (c) 2017 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 #include <stdlib.h>
  18 #include <stdbool.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 <unistd.h>
  28 #include <widget_errno.h>
  29 #include <widget_instance.h>
  30 #include <aul_app_com.h>
  31 #include <Ecore_Wayland.h>
  32 #include <system_info.h>
  33 #include <vconf.h>
  34 #include <vconf-internal-keys.h>
  35 #include <screen_connector_provider.h>
  36 #include <appcore_multiwindow_base.h>
  37
  38 #include "widget_base.h"
  39
  40 #ifdef LOG_TAG
  41 #undef LOG_TAG
  42 #endif
  43
  44 #define LOG_TAG "CAPI_WIDGET_APPLICATION"
  45 #define APP_TYPE_WIDGET "widgetapp"
  46 #define STATUS_FOREGROUND "fg"
  47 #define STATUS_BACKGROUND "bg"
  48
  49 static int __app_event_converter[APPCORE_BASE_EVENT_MAX] = {
  50         [APP_EVENT_LOW_MEMORY] = APPCORE_BASE_EVENT_LOW_MEMORY,
  51         [APP_EVENT_LOW_BATTERY] = APPCORE_BASE_EVENT_LOW_BATTERY,
  52         [APP_EVENT_LANGUAGE_CHANGED] = APPCORE_BASE_EVENT_LANG_CHANGE,
  53         [APP_EVENT_DEVICE_ORIENTATION_CHANGED]
  54                         = APPCORE_BASE_EVENT_DEVICE_ORIENTATION_CHANGED,
  55         [APP_EVENT_REGION_FORMAT_CHANGED] = APPCORE_BASE_EVENT_REGION_CHANGE,
  56         [APP_EVENT_SUSPENDED_STATE_CHANGED]
  57                         = APPCORE_BASE_EVENT_SUSPENDED_STATE_CHANGE,
  58 };
  59
  60 struct app_event_info {
  61         app_event_type_e type;
  62         void *value;
  63 };
  64
  65 struct app_event_handler {
  66         app_event_type_e type;
  67         app_event_cb cb;
  68         void *data;
  69         void *raw;
  70 };
  71
  72 struct widget_foreach_context {
  73         widget_base_instance_cb callback;
  74         void *data;
  75 };
  76
  77 typedef struct _widget_base_context {
  78         widget_base_ops ops;
  79         void *data;
  80         int argc;
  81         char **argv;
  82         GList *classes;
  83 } widget_base_context;
  84
  85 typedef struct _widget_base_instance_data {
  86         bundle *args;
  87         char *content;
  88         void *tag;
  89         void *user_data;
  90 } widget_base_instance_data;
  91
  92 static widget_base_context __context;
  93 static char *__appid;
  94 static char *__package_id;
  95 static bool __fg_signal;
  96 static char *__viewer_endpoint;
  97
  98 static bool __is_widget_feature_enabled(void)
  99 {
 100         static bool feature = false;
 101         static bool retrieved = false;
 102         int ret;
 103
 104         if (retrieved == true)
 105                 return feature;
 106
 107         ret = system_info_get_platform_bool(FEATURE_SHELL_APPWIDGET, &feature);
 108         if (ret != SYSTEM_INFO_ERROR_NONE) {
 109                 LOGE("failed to get system info"); /* LCOV_EXCL_LINE */
 110                 return false; /* LCOV_EXCL_LINE */
 111         }
 112
 113         retrieved = true;
 114
 115         return feature;
 116 }
 117
 118 /* LCOV_EXCL_START */
 119 static void __on_poweroff(keynode_t *key, void *data)
 120 {
 121         int val;
 122
 123         val = vconf_keynode_get_int(key);
 124         switch (val) {
 125         case VCONFKEY_SYSMAN_POWER_OFF_DIRECT:
 126         case VCONFKEY_SYSMAN_POWER_OFF_RESTART:
 127                 LOGI("power off changed: %d", val);
 128                 widget_base_exit();
 129                 break;
 130         case VCONFKEY_SYSMAN_POWER_OFF_NONE:
 131         case VCONFKEY_SYSMAN_POWER_OFF_POPUP:
 132         default:
 133                 /* DO NOTHING */
 134                 break;
 135         }
 136 }
 137 /* LCOV_EXCL_STOP */
 138
 139 static void __check_empty_instance(void)
 140 {
 141         int cnt = appcore_multiwindow_base_instance_get_cnt();
 142
 143         if (cnt == 0)
 144                 widget_base_exit();
 145 }
 146
 147 static void __instance_drop(appcore_multiwindow_base_instance_h instance_h)
 148 {
 149         widget_base_instance_data *data;
 150
 151         data = appcore_multiwindow_base_instance_get_extra(instance_h);
 152         appcore_multiwindow_base_instance_drop(instance_h);
 153         free(data->content);
 154         free(data);
 155         __check_empty_instance();
 156 }
 157
 158 static gint __comp_class(gconstpointer a, gconstpointer b)
 159 {
 160         const widget_base_class *cls = a;
 161
 162         return strcmp(cls->id, b);
 163 }
 164
 165 static widget_base_class __get_class(const char *class_id)
 166 {
 167         widget_base_class *cls;
 168         GList *class_node;
 169
 170         class_node = g_list_find_custom(__context.classes, class_id,
 171                         __comp_class);
 172         cls = (widget_base_class *)class_node->data;
 173
 174         return *cls;
 175 }
 176
 177 static int __send_lifecycle_event(const char *class_id, const char *instance_id,
 178         int status)
 179 {
 180         bundle *b = bundle_create();
 181         int ret;
 182
 183         if (b == NULL) {
 184                 LOGE("out of memory"); /* LCOV_EXCL_LINE */
 185                 return -1; /* LCOV_EXCL_LINE */
 186         }
 187
 188         bundle_add_str(b, AUL_K_WIDGET_ID, class_id);
 189         bundle_add_str(b, AUL_K_WIDGET_INSTANCE_ID, instance_id);
 190         bundle_add_byte(b, AUL_K_WIDGET_STATUS, &status, sizeof(int));
 191         bundle_add_str(b, AUL_K_PKGID, __package_id);
 192
 193         LOGD("send lifecycle %s(%d)", instance_id, status);
 194         ret = aul_app_com_send("widget.status", b);
 195         if (ret < 0)
 196                 LOGE("send lifecycle error:%d", ret); /* LCOV_EXCL_LINE */
 197
 198         bundle_free(b);
 199
 200         return ret;
 201 }
 202
 203 static int __send_update_status(const char *class_id, const char *instance_id,
 204         int status, bundle *extra)
 205 {
 206         bundle *b;
 207         int lifecycle = -1;
 208         bundle_raw *raw = NULL;
 209         int len;
 210
 211         b = bundle_create();
 212         if (!b) {
 213                 LOGE("out of memory"); /* LCOV_EXCL_LINE */
 214                 return -1; /* LCOV_EXCL_LINE */
 215         }
 216
 217         bundle_add_str(b, AUL_K_WIDGET_ID, class_id);
 218         bundle_add_str(b, AUL_K_WIDGET_INSTANCE_ID, instance_id);
 219         bundle_add_byte(b, AUL_K_WIDGET_STATUS, &status, sizeof(int));
 220
 221         if (extra) {
 222                 bundle_encode(extra, &raw, &len);
 223                 bundle_add_str(b, WIDGET_K_CONTENT_INFO, (const char *)raw);
 224                 aul_widget_instance_add(class_id, instance_id);
 225         }
 226
 227         LOGD("send update %s(%d) to %s", instance_id, status, __viewer_endpoint);
 228         aul_app_com_send(__viewer_endpoint, b);
 229
 230         switch (status) {
 231         case WIDGET_INSTANCE_EVENT_CREATE:
 232                 lifecycle = WIDGET_LIFE_CYCLE_EVENT_CREATE;
 233                 break;
 234         case WIDGET_INSTANCE_EVENT_DESTROY:
 235                 lifecycle = WIDGET_LIFE_CYCLE_EVENT_DESTROY;
 236                 break;
 237         case WIDGET_INSTANCE_EVENT_PAUSE:
 238                 lifecycle = WIDGET_LIFE_CYCLE_EVENT_PAUSE;
 239                 break;
 240         case WIDGET_INSTANCE_EVENT_RESUME:
 241                 lifecycle = WIDGET_LIFE_CYCLE_EVENT_RESUME;
 242                 break;
 243         }
 244
 245         if (lifecycle > -1)
 246                 __send_lifecycle_event(class_id, instance_id, lifecycle);
 247
 248         bundle_free(b);
 249         if (raw)
 250                 free(raw);
 251
 252         return 0;
 253 }
 254
 255 static void __control_create(const char *class_id, const char *id, bundle *b)
 256 {
 257         widget_base_instance_data *data;
 258         char *content = NULL;
 259
 260         data = (widget_base_instance_data *)
 261                         calloc(1, sizeof(widget_base_instance_data));
 262         if (!data) {
 263                 LOGE("Out of memory");
 264                 return;
 265         }
 266
 267         data->args = b;
 268
 269         /* call stub create */
 270         appcore_multiwindow_base_instance_run(class_id, id, data);
 271         data->args = NULL;
 272         bundle_get_str(b, WIDGET_K_CONTENT_INFO, &content);
 273         if (content)
 274                 data->content = strdup(content);
 275
 276 }
 277
 278 static void __control_resume(const char *class_id, const char *id, bundle *b)
 279 {
 280         appcore_multiwindow_base_instance_h cxt;
 281
 282         cxt = appcore_multiwindow_base_instance_find(id);
 283         if (!cxt) {
 284                 LOGE("context not found: %s", id);
 285                 return;
 286         }
 287
 288         /* call stub resume */
 289         appcore_multiwindow_base_instance_resume(cxt);
 290 }
 291
 292 static void __control_pause(const char *class_id, const char *id, bundle *b)
 293 {
 294         appcore_multiwindow_base_instance_h instance_h;
 295
 296         instance_h = appcore_multiwindow_base_instance_find(id);
 297
 298         if (!instance_h) {
 299                 LOGE("instance not found: %s", id);
 300                 return;
 301         }
 302
 303         /* call stub pause */
 304         appcore_multiwindow_base_instance_pause(instance_h);
 305 }
 306
 307 static void __control_resize(const char *class_id, const char *id, bundle *b)
 308 {
 309         appcore_multiwindow_base_instance_h instance_h;
 310         char *remain = NULL;
 311         char *w_str = NULL;
 312         char *h_str = NULL;
 313         int w = 0;
 314         int h = 0;
 315         void *class_data;
 316         widget_base_class cls;
 317         const appcore_multiwindow_base_class *raw_cls;
 318
 319         instance_h = appcore_multiwindow_base_instance_find(id);
 320         if (!instance_h) {
 321                 LOGE("context not found: %s", id);
 322                 return;
 323         }
 324
 325         raw_cls = appcore_multiwindow_base_instance_get_class(instance_h);
 326         if (!raw_cls)
 327                 return;
 328
 329         cls = __get_class(class_id);
 330         class_data = raw_cls->data;
 331         bundle_get_str(b, WIDGET_K_WIDTH, &w_str);
 332         bundle_get_str(b, WIDGET_K_HEIGHT, &h_str);
 333
 334         if (w_str)
 335                 w = (int)g_ascii_strtoll(w_str, &remain, 10);
 336
 337         if (h_str)
 338                 h = (int)g_ascii_strtoll(h_str, &remain, 10);
 339
 340         if (cls.ops.resize)
 341                 cls.ops.resize(instance_h, w, h, class_data);
 342
 343         LOGD("%s is resized to %dx%d", id, w, h);
 344         __send_update_status(class_id, id,
 345                 WIDGET_INSTANCE_EVENT_SIZE_CHANGED, NULL);
 346 }
 347
 348 static void __update_cb(const char *class_id, const char *id,
 349                 appcore_multiwindow_base_instance_h instance_h, void *data)
 350 {
 351         void *class_data;
 352         const appcore_multiwindow_base_class *raw_cls;
 353         bundle *content = NULL;
 354         char *content_raw = NULL;
 355         char *force_str = NULL;
 356         int force;
 357         bundle *b = data;
 358         widget_base_class cls;
 359
 360         if (!b) {
 361                 LOGE("bundle is NULL");
 362                 return;
 363         }
 364
 365         raw_cls = appcore_multiwindow_base_instance_get_class(instance_h);
 366         if (!raw_cls) {
 367                 LOGE("class is NULL");
 368                 return;
 369         }
 370
 371         class_data = raw_cls->data;
 372         cls = __get_class(class_id);
 373
 374         if (!cls.ops.update) {
 375                 LOGE("update callback is NULL");
 376                 return;
 377         }
 378
 379         bundle_get_str(b, WIDGET_K_FORCE, &force_str);
 380
 381         if (force_str && strcmp(force_str, "true") == 0)
 382                 force = 1;
 383         else
 384                 force = 0;
 385
 386         bundle_get_str(b, WIDGET_K_CONTENT_INFO, &content_raw);
 387
 388         if (content_raw) {
 389                 content = bundle_decode((const bundle_raw *)content_raw,
 390                                 strlen(content_raw));
 391         }
 392
 393         if (cls.ops.update)
 394                 cls.ops.update(instance_h, content, force, class_data);
 395
 396         __send_update_status(class_id, id,
 397                 WIDGET_INSTANCE_EVENT_UPDATE, NULL);
 398         LOGD("updated:%s", id);
 399
 400         if (content)
 401                 bundle_free(content);
 402 }
 403
 404 static void __control_update(const char *class_id, const char *id, bundle *b)
 405 {
 406         appcore_multiwindow_base_instance_h instance_h;
 407
 408         if (!id) {
 409                 appcore_multiwindow_base_instance_foreach(class_id,
 410                                 __update_cb, b);
 411                 return;
 412         }
 413
 414         instance_h = appcore_multiwindow_base_instance_find(id);
 415         if (!instance_h) {
 416                 LOGE("context not found: %s", id);
 417                 return;
 418         }
 419
 420         __update_cb(class_id, id, instance_h, b);
 421 }
 422
 423 static void __control_destroy(const char *class_id, const char *id, bundle *b)
 424 {
 425         appcore_multiwindow_base_instance_h instance_h;
 426         widget_base_instance_data *data;
 427
 428         instance_h = appcore_multiwindow_base_instance_find(id);
 429         if (!instance_h) {
 430                 LOGE("could not find widget obj: %s, clear amd info", id);
 431                 aul_widget_instance_del(class_id, id);
 432                 return;
 433         }
 434
 435         data = (widget_base_instance_data *)
 436                         appcore_multiwindow_base_instance_get_extra(instance_h);
 437         data->args = b;
 438
 439         /* call stub terminate */
 440         appcore_multiwindow_base_instance_exit(instance_h);
 441         free(data->content);
 442         free(data);
 443         __check_empty_instance();
 444 }
 445
 446 static int __multiwindow_create(void *data)
 447 {
 448         char pkgid[256] = {0, };
 449         int ret = 0;
 450
 451         appcore_multiwindow_base_on_create();
 452         app_get_id(&__appid);
 453         if (aul_app_get_pkgid_bypid(getpid(), pkgid, sizeof(pkgid)) == 0)
 454                 __package_id = strdup(pkgid);
 455
 456         if (!__package_id || !__appid) {
 457                 LOGE("__package_id is NULL");
 458                 return -1;
 459         }
 460
 461         screen_connector_provider_init();
 462         vconf_notify_key_changed(VCONFKEY_SYSMAN_POWER_OFF_STATUS,
 463                         __on_poweroff, NULL);
 464
 465
 466         if (__context.ops.create)
 467                 ret = __context.ops.create(data);
 468
 469         LOGD("widget base is created");
 470         return ret;
 471 }
 472
 473 static int __multiwindow_terminate(void *data)
 474 {
 475         if (__context.ops.terminate)
 476                 __context.ops.terminate(data);
 477
 478         vconf_ignore_key_changed(VCONFKEY_SYSMAN_POWER_OFF_STATUS,
 479                         __on_poweroff);
 480         screen_connector_provider_fini();
 481
 482         if (__viewer_endpoint) {
 483                 free(__viewer_endpoint);
 484                 __viewer_endpoint = NULL;
 485         }
 486
 487         if (__package_id) {
 488                 free(__package_id);
 489                 __package_id = NULL;
 490         }
 491
 492         if (__appid) {
 493                 free(__appid);
 494                 __appid = NULL;
 495         }
 496
 497         appcore_multiwindow_base_on_terminate();
 498
 499         LOGD("widget base is terminated");
 500         return 0;
 501 }
 502
 503 static int __multiwindow_control(bundle *b, void *data)
 504 {
 505         char *class_id = NULL;
 506         char *id = NULL;
 507         char *operation = NULL;
 508
 509         appcore_multiwindow_base_on_control(b);
 510         bundle_get_str(b, WIDGET_K_CLASS, &class_id);
 511         /* for previous version compatibility, use appid for default class id */
 512         if (class_id == NULL)
 513                 class_id = __appid;
 514
 515         bundle_get_str(b, AUL_K_WIDGET_INSTANCE_ID, &id);
 516         bundle_get_str(b, WIDGET_K_OPERATION, &operation);
 517
 518         if (!operation) {
 519                 LOGE("operation is NULL");
 520                 return 0;
 521         }
 522
 523         if (strcmp(operation, "create") == 0)
 524                 __control_create(class_id, id, b);
 525         else if (strcmp(operation, "resize") == 0)
 526                 __control_resize(class_id, id, b);
 527         else if (strcmp(operation, "update") == 0)
 528                 __control_update(class_id, id, b);
 529         else if (strcmp(operation, "destroy") == 0)
 530                 __control_destroy(class_id, id, b);
 531         else if (strcmp(operation, "resume") == 0)
 532                 __control_resume(class_id, id, b);
 533         else if (strcmp(operation, "pause") == 0)
 534                 __control_pause(class_id, id, b);
 535         else if (strcmp(operation, "terminate") == 0)
 536                 __control_destroy(class_id, id, b);
 537
 538         return 0;
 539 }
 540
 541 static void __inst_resume_cb(const char *class_id, const char *id,
 542                 appcore_multiwindow_base_instance_h cxt, void *data)
 543 {
 544         __control_resume(class_id, id, data);
 545 }
 546
 547 static void __get_content(bundle *b)
 548 {
 549         char *instance_id = NULL;
 550         appcore_multiwindow_base_instance_h cxt;
 551         widget_base_instance_data * we;
 552
 553         bundle_get_str(b, AUL_K_WIDGET_INSTANCE_ID, &instance_id);
 554         if (!instance_id) {
 555                 LOGE("instance id is NULL");
 556                 return;
 557         }
 558
 559         cxt = appcore_multiwindow_base_instance_find(instance_id);
 560         if (!cxt) {
 561                 LOGE("could not find widget obj: %s", instance_id);
 562                 return;
 563         }
 564
 565         we = appcore_multiwindow_base_instance_get_extra(cxt);
 566         if (!we) {
 567                 LOGE("widget extra is NULL");
 568                 return;
 569         }
 570
 571         if (we->content) {
 572                 bundle_add_str(b, AUL_K_WIDGET_CONTENT_INFO, we->content);
 573                 LOGD("content info of %s found", instance_id);
 574         } else {
 575                 bundle_add_str(b, AUL_K_WIDGET_CONTENT_INFO, "");
 576                 LOGD("empty content info added");
 577         }
 578 }
 579
 580 static int __multiwindow_receive(aul_type type, bundle *b, void *data)
 581 {
 582         appcore_multiwindow_base_on_receive(type, b);
 583
 584         switch (type) {
 585         case AUL_RESUME:
 586                 appcore_multiwindow_base_instance_foreach_full(
 587                                 __inst_resume_cb, b);
 588                 break;
 589         case AUL_TERMINATE:
 590                 widget_base_exit();
 591                 break;
 592         case AUL_WIDGET_CONTENT:
 593                 __get_content(b);
 594                 break;
 595         default:
 596                 break;
 597         }
 598
 599         return 0;
 600 }
 601
 602 static void __multiwindow_init(int argc, char **argv, void *data)
 603 {
 604         if (__context.ops.init)
 605                 __context.ops.init(argc, argv, data);
 606 }
 607
 608 static void __multiwindow_finish(void)
 609 {
 610         if (__context.ops.finish) {
 611                 __context.ops.finish();
 612                 /* Check Loader case */
 613                 if (getenv("AUL_LOADER_INIT")) {
 614                         unsetenv("AUL_LOADER_INIT");
 615                         __context.ops.finish();
 616                 }
 617         }
 618 }
 619
 620 static void __multiwindow_run(void *data)
 621 {
 622         if (__context.ops.run)
 623                 __context.ops.run(data);
 624 }
 625
 626 static void __multiwindow_exit(void *data)
 627 {
 628         if (__context.ops.exit)
 629                 __context.ops.exit(data);
 630 }
 631
 632 EXPORT_API int widget_base_exit(void)
 633 {
 634         appcore_multiwindow_base_exit();
 635         aul_widget_notify_exit();
 636
 637         return 0;
 638 }
 639
 640 static gboolean __finish_event_cb(gpointer user_data)
 641 {
 642         appcore_multiwindow_base_instance_h cxt = user_data;
 643         bundle *b;
 644         const char *id;
 645         const char *class_id;
 646
 647         if (!cxt) {
 648                 LOGE("user_data is NULL");
 649                 return FALSE;
 650         }
 651
 652         id = appcore_multiwindow_base_instance_get_id(cxt);
 653         class_id = appcore_multiwindow_base_instance_get_class_id(cxt);
 654         b = bundle_create();
 655
 656         if (!b) {
 657                 LOGE("Out-of-memory");
 658                 return FALSE;
 659         }
 660
 661         bundle_add_str(b, WIDGET_K_OPERATION, "terminate");
 662         __control_destroy(class_id, id, b);
 663         bundle_free(b);
 664
 665         return FALSE;
 666 }
 667
 668 EXPORT_API int widget_base_terminate_context(widget_base_instance_h context)
 669 {
 670         if (!__is_widget_feature_enabled()) {
 671                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 672                 return WIDGET_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 673         }
 674
 675         if (!context) {
 676                 LOGE("context is null");
 677                 return WIDGET_ERROR_INVALID_PARAMETER;
 678         }
 679
 680         g_idle_add(__finish_event_cb, context);
 681
 682         return WIDGET_ERROR_NONE;
 683 }
 684
 685 static void __inst_full_cb(const char *class_id, const char *id,
 686                 appcore_multiwindow_base_instance_h cxt, void *data)
 687 {
 688         struct widget_foreach_context *foreach_context = data;
 689
 690         if (!data)
 691                 return;
 692
 693         if (foreach_context->callback)
 694                 foreach_context->callback(cxt, foreach_context->data);
 695 }
 696
 697 EXPORT_API int widget_base_foreach_context(widget_base_instance_cb cb, void *data)
 698 {
 699         struct widget_foreach_context foreach_context;
 700
 701         if (!__is_widget_feature_enabled()) {
 702                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 703                 return WIDGET_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 704         }
 705
 706         if (!cb) {
 707                 LOGE("callback is NULL");
 708                 return WIDGET_ERROR_INVALID_PARAMETER;
 709         }
 710
 711         foreach_context.callback = cb;
 712         foreach_context.data = data;
 713         appcore_multiwindow_base_instance_foreach_full(__inst_full_cb, &foreach_context);
 714
 715         return WIDGET_ERROR_NONE;
 716 }
 717
 718 static int __event_cb(void *event, void *data)
 719 {
 720         app_event_handler_h handler = data;
 721
 722         struct app_event_info app_event;
 723
 724         app_event.type = handler->type;
 725         app_event.value = event;
 726
 727         if (handler->cb)
 728                 handler->cb(&app_event, handler->data);
 729
 730         return 0;
 731 }
 732
 733 EXPORT_API int widget_base_add_event_handler(app_event_handler_h *event_handler,
 734                                         app_event_type_e event_type,
 735                                         app_event_cb callback,
 736                                         void *user_data)
 737 {
 738         int r;
 739         bool feature;
 740         app_event_handler_h handler;
 741
 742         r = system_info_get_platform_bool(FEATURE_SHELL_APPWIDGET, &feature);
 743         if (r < 0)
 744                 return WIDGET_BASE_ERROR_FAULT;
 745
 746         if (!feature)
 747                 return WIDGET_BASE_ERROR_NOT_SUPPORTED;
 748
 749         if (event_handler == NULL || callback == NULL)
 750                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 751
 752         if (event_type < APP_EVENT_LOW_MEMORY
 753             || event_type > APP_EVENT_REGION_FORMAT_CHANGED)
 754                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 755
 756         if (event_type == APP_EVENT_DEVICE_ORIENTATION_CHANGED)
 757                 return WIDGET_BASE_ERROR_NOT_SUPPORTED;
 758
 759
 760         handler = calloc(1, sizeof(struct app_event_handler));
 761         if (!handler)
 762                 return WIDGET_BASE_ERROR_OUT_OF_MEMORY;
 763
 764         handler->type = event_type;
 765         handler->cb = callback;
 766         handler->data = user_data;
 767         handler->raw = appcore_base_add_event(
 768                         __app_event_converter[event_type], __event_cb, handler);
 769         *event_handler = handler;
 770
 771         return WIDGET_BASE_ERROR_NONE;
 772 }
 773
 774 EXPORT_API int widget_base_remove_event_handler(app_event_handler_h
 775                                                 event_handler)
 776 {
 777         int r;
 778         bool feature;
 779         app_event_type_e type;
 780
 781         r = system_info_get_platform_bool(FEATURE_SHELL_APPWIDGET, &feature);
 782         if (r < 0)
 783                 return WIDGET_BASE_ERROR_FAULT;
 784
 785         if (!feature)
 786                 return WIDGET_BASE_ERROR_NOT_SUPPORTED;
 787
 788         if (event_handler == NULL)
 789                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 790
 791         type = event_handler->type;
 792         if (type < APP_EVENT_LOW_MEMORY ||
 793                         type > APP_EVENT_REGION_FORMAT_CHANGED)
 794                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 795
 796         r = appcore_base_remove_event(event_handler->raw);
 797         if (r < 0)
 798                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 799
 800         free(event_handler);
 801
 802         return WIDGET_BASE_ERROR_NONE;
 803 }
 804
 805 EXPORT_API int widget_base_context_set_content_info(
 806                 widget_base_instance_h context,
 807                 bundle *content_info)
 808 {
 809         int ret = 0;
 810         bundle_raw *raw = NULL;
 811         int len;
 812         const char *id;
 813         const char *class_id;
 814         widget_base_instance_data *data;
 815         appcore_multiwindow_base_instance_h instance_h;
 816
 817         if (!__is_widget_feature_enabled()) {
 818                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 819                 return WIDGET_BASE_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 820         }
 821
 822         if (!context || !content_info)
 823                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 824
 825         instance_h = (appcore_multiwindow_base_instance_h)context;
 826         id = appcore_multiwindow_base_instance_get_id(instance_h);
 827         class_id = appcore_multiwindow_base_instance_get_class_id(instance_h);
 828         data = appcore_multiwindow_base_instance_get_extra(instance_h);
 829
 830         if (!class_id || !id || !data)
 831                 return WIDGET_BASE_ERROR_FAULT;
 832
 833         ret = __send_update_status(class_id, id,
 834                         WIDGET_INSTANCE_EVENT_EXTRA_UPDATED, content_info);
 835
 836         if (data->content)
 837                 free(data->content);
 838
 839         bundle_encode(content_info, &raw, &len);
 840         if (raw)
 841                 data->content = strdup((const char *)raw);
 842         else
 843                 data->content = NULL;
 844
 845         free(raw);
 846         if (ret < 0) {
 847                 /* LCOV_EXCL_START */
 848                 LOGE("failed to send content info: %s of %s (%d)", id,
 849                                 class_id, ret);
 850                 return WIDGET_BASE_ERROR_IO_ERROR;
 851                 /* LCOV_EXCL_STOP */
 852         }
 853
 854         return WIDGET_BASE_ERROR_NONE;
 855 }
 856
 857 EXPORT_API int widget_base_context_get_tag(widget_base_instance_h context, void **tag)
 858 {
 859         appcore_multiwindow_base_instance_h instance_h;
 860         widget_base_instance_data *data;
 861
 862         if (!__is_widget_feature_enabled()) {
 863                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 864                 return WIDGET_BASE_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 865         }
 866
 867         if (!context || !tag) {
 868                 LOGE("Invalid parameter");
 869                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 870         }
 871
 872         instance_h = (appcore_multiwindow_base_instance_h)context;
 873         data = (widget_base_instance_data *)
 874                         appcore_multiwindow_base_instance_get_extra(instance_h);
 875
 876         if (!data) {
 877                 LOGE("Invalid parameter");
 878                 return WIDGET_ERROR_INVALID_PARAMETER;
 879         }
 880
 881         *tag = data->tag;
 882
 883         return WIDGET_BASE_ERROR_NONE;
 884 }
 885
 886 EXPORT_API int widget_base_context_set_tag(widget_base_instance_h context, void *tag)
 887 {
 888         appcore_multiwindow_base_instance_h instance_h;
 889         widget_base_instance_data *data;
 890
 891         if (!__is_widget_feature_enabled()) {
 892                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 893                 return WIDGET_BASE_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 894         }
 895
 896         if (!context) {
 897                 LOGE("Invalid parameter");
 898                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 899         }
 900
 901         instance_h = (appcore_multiwindow_base_instance_h)context;
 902         data = (widget_base_instance_data *)
 903                         appcore_multiwindow_base_instance_get_extra(instance_h);
 904         data->tag = tag;
 905
 906         return WIDGET_BASE_ERROR_NONE;
 907 }
 908
 909 EXPORT_API void *widget_base_context_get_user_data(
 910                 widget_base_instance_h context)
 911 {
 912         appcore_multiwindow_base_instance_h instance_h;
 913         widget_base_instance_data *data;
 914
 915         if (!__is_widget_feature_enabled()) {
 916                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 917                 return NULL; /* LCOV_EXCL_LINE */
 918         }
 919
 920         if (!context) {
 921                 LOGE("Invalid parameter");
 922                 return NULL;
 923         }
 924
 925         instance_h = (appcore_multiwindow_base_instance_h)context;
 926         data = (widget_base_instance_data *)
 927                         appcore_multiwindow_base_instance_get_extra(instance_h);
 928
 929         return data->user_data;
 930 }
 931
 932
 933 EXPORT_API int widget_base_context_set_user_data(
 934                 widget_base_instance_h context, void *user_data)
 935 {
 936         appcore_multiwindow_base_instance_h instance_h;
 937         widget_base_instance_data *data;
 938
 939         if (!__is_widget_feature_enabled()) {
 940                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 941                 return WIDGET_BASE_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 942         }
 943
 944         if (!context) {
 945                 LOGE("Invalid parameter");
 946                 return WIDGET_BASE_ERROR_INVALID_PARAMETER;
 947         }
 948
 949         instance_h = (appcore_multiwindow_base_instance_h)context;
 950         data = (widget_base_instance_data *)
 951                         appcore_multiwindow_base_instance_get_extra(instance_h);
 952         data->user_data = user_data;
 953
 954         return WIDGET_BASE_ERROR_NONE;
 955 }
 956
 957 EXPORT_API int widget_base_context_get_id(widget_base_instance_h context, char **id)
 958 {
 959         appcore_multiwindow_base_instance_h instance_h;
 960
 961         if (!__is_widget_feature_enabled()) {
 962                 LOGE("not supported"); /* LCOV_EXCL_LINE */
 963                 return WIDGET_BASE_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
 964         }
 965
 966         instance_h = (appcore_multiwindow_base_instance_h)context;
 967         *id = (char *)appcore_multiwindow_base_instance_get_id(instance_h);
 968
 969         return WIDGET_BASE_ERROR_NONE;
 970 }
 971
 972 EXPORT_API const char *widget_base_get_viewer_endpoint()
 973 {
 974         return __viewer_endpoint;
 975 }
 976
 977 EXPORT_API int widget_base_init(widget_base_ops ops, int argc, char **argv,
 978                 void *data)
 979 {
 980         bundle *kb;
 981         char *viewer_endpoint = NULL;
 982         appcore_multiwindow_base_ops raw_ops
 983                         = appcore_multiwindow_base_get_default_ops();
 984
 985         __context.ops = ops;
 986         __context.argc = argc;
 987         __context.argv = argv;
 988         __context.data = data;
 989
 990         /* override methods */
 991         raw_ops.base.create = __multiwindow_create;
 992         raw_ops.base.control = __multiwindow_control;
 993         raw_ops.base.terminate = __multiwindow_terminate;
 994         raw_ops.base.receive = __multiwindow_receive;
 995         raw_ops.base.init = __multiwindow_init;
 996         raw_ops.base.finish = __multiwindow_finish;
 997         raw_ops.base.run = __multiwindow_run;
 998         raw_ops.base.exit = __multiwindow_exit;
 999
1000         if (!__is_widget_feature_enabled()) {
1001                 LOGE("not supported"); /* LCOV_EXCL_LINE */
1002                 return WIDGET_ERROR_NOT_SUPPORTED; /* LCOV_EXCL_LINE */
1003         }
1004
1005         kb = bundle_import_from_argv(argc, argv);
1006         if (kb) {
1007                 bundle_get_str(kb, WIDGET_K_ENDPOINT, &viewer_endpoint);
1008                 if (viewer_endpoint) {
1009                         LOGD("viewer endpoint :%s", viewer_endpoint);
1010                         __viewer_endpoint = strdup(viewer_endpoint);
1011                 } else {
1012                         LOGE("endpoint is missing");
1013                 }
1014
1015                 bundle_free(kb);
1016         } else {
1017                 LOGE("failed to get launch argv"); /* LCOV_EXCL_LINE */
1018                 return WIDGET_ERROR_FAULT;
1019         }
1020
1021         if (appcore_multiwindow_base_init(raw_ops, argc, argv, data) < 0)
1022                return WIDGET_ERROR_FAULT;
1023
1024         return WIDGET_ERROR_NONE;
1025 }
1026
1027 static int __on_create(void *data)
1028 {
1029         return widget_base_on_create();
1030 }
1031
1032 static int __on_terminate(void *data)
1033 {
1034         return widget_base_on_terminate();
1035 }
1036
1037 static void __on_init(int argc, char **argv, void *data)
1038 {
1039         widget_base_on_init(argc, argv);
1040 }
1041
1042 static void __on_finish(void)
1043 {
1044         widget_base_on_finish();
1045 }
1046
1047 static void __on_run(void *data)
1048 {
1049         widget_base_on_run();
1050 }
1051
1052 static void __on_exit(void *data)
1053 {
1054         widget_base_on_exit();
1055 }
1056
1057 EXPORT_API int widget_base_on_create(void)
1058 {
1059         appcore_multiwindow_base_on_create();
1060
1061         return 0;
1062 }
1063
1064 EXPORT_API int widget_base_on_terminate(void)
1065 {
1066         appcore_multiwindow_base_on_terminate();
1067
1068         return 0;
1069 }
1070
1071 EXPORT_API int widget_base_on_init(int argc, char **argv)
1072 {
1073         return 0;
1074 }
1075
1076 EXPORT_API void widget_base_on_finish(void)
1077 {
1078 }
1079
1080 EXPORT_API void widget_base_on_run(void)
1081 {
1082 }
1083
1084 EXPORT_API void widget_base_on_exit(void)
1085 {
1086 }
1087
1088 EXPORT_API widget_base_ops widget_base_get_default_ops(void)
1089 {
1090         widget_base_ops ops;
1091
1092         /* override methods */
1093         ops.create = __on_create;
1094         ops.terminate = __on_terminate;
1095         ops.init = __on_init;
1096         ops.finish = __on_finish;
1097         ops.run = __on_run;
1098         ops.exit = __on_exit;
1099
1100         return ops;
1101 }
1102
1103 static void __free_class(gpointer data)
1104 {
1105         widget_base_class *cls = data;
1106
1107         free(cls->id);
1108         free(cls);
1109 }
1110
1111 EXPORT_API void widget_base_fini(void)
1112 {
1113         g_list_free_full(__context.classes, __free_class);
1114         __context.classes = NULL;
1115
1116         appcore_multiwindow_base_fini();
1117 }
1118
1119 EXPORT_API int widget_base_context_window_bind(
1120                 widget_base_instance_h instance_h, const char *id,
1121                 Ecore_Wl_Window *wl_win)
1122 {
1123         struct wl_surface *surface;
1124
1125         surface = ecore_wl_window_surface_get(wl_win);
1126         if (surface == NULL) {
1127                 LOGE("failed to get surface"); /* LCOV_EXCL_LINE */
1128                 return WIDGET_BASE_ERROR_FAULT; /* LCOV_EXCL_LINE */
1129         }
1130
1131         screen_connector_provider_remote_enable(id, surface);
1132         appcore_multiwindow_base_window_bind(instance_h, wl_win);
1133
1134         return WIDGET_BASE_ERROR_NONE;
1135 }
1136
1137 static int __class_on_create(widget_base_instance_h instance_h, bundle *content,
1138                 int w, int h, void *class_data)
1139 {
1140         return widget_base_class_on_create(instance_h, content, w, h);
1141 }
1142
1143 static int __class_on_resume(widget_base_instance_h instance_h, void *class_data)
1144 {
1145         return widget_base_class_on_resume(instance_h);
1146 }
1147
1148 static int __class_on_pause(widget_base_instance_h instance_h,
1149                 void *class_data)
1150 {
1151         return widget_base_class_on_pause(instance_h);
1152 }
1153
1154 static int __class_on_resize(widget_base_instance_h instance_h, int w, int h,
1155                 void *class_data)
1156 {
1157         return widget_base_class_on_resize(instance_h, w, h);
1158 }
1159
1160 static int __class_on_update(widget_base_instance_h instance_h, bundle *content,
1161                 int force, void *class_data)
1162 {
1163         return widget_base_class_on_update(instance_h, content, force);
1164 }
1165
1166 static int __class_on_destroy(widget_base_instance_h instance_h,
1167                 widget_base_destroy_type_e reason, bundle *content,
1168                 void *class_data)
1169 {
1170         return widget_base_class_on_destroy(instance_h, reason, content);
1171 }
1172
1173 static void __multiwindow_instance_create(
1174                 appcore_multiwindow_base_instance_h instance_h,
1175                 void *class_data)
1176 {
1177         widget_base_instance_data *instance_data;
1178         bundle *b;
1179         bundle *content_info = NULL;
1180         char *id = NULL;
1181         char *class_id = NULL;
1182         char *operation = NULL;
1183         char *content = NULL;
1184         char *w_str = NULL;
1185         char *h_str = NULL;
1186         char *remain = NULL;
1187         int w = 0;
1188         int h = 0;
1189         int ret = -1;
1190         widget_base_class cls;
1191
1192         appcore_multiwindow_base_class_on_create(instance_h);
1193         instance_data = appcore_multiwindow_base_instance_get_extra(instance_h);
1194         b = instance_data->args;
1195
1196         bundle_get_str(b, WIDGET_K_CLASS, &class_id);
1197         /* for previous version compatibility, use appid for default class id */
1198         if (class_id == NULL)
1199                 class_id = __appid;
1200
1201         cls = __get_class(class_id);
1202         bundle_get_str(b, AUL_K_WIDGET_INSTANCE_ID, &id);
1203         bundle_get_str(b, WIDGET_K_OPERATION, &operation);
1204
1205         if (!operation) {
1206                 LOGE("no operation provided");
1207                 return;
1208         }
1209
1210         bundle_get_str(b, WIDGET_K_CONTENT_INFO, &content);
1211         bundle_get_str(b, WIDGET_K_WIDTH, &w_str);
1212         bundle_get_str(b, WIDGET_K_HEIGHT, &h_str);
1213
1214         if (w_str)
1215                 w = (int)g_ascii_strtoll(w_str, &remain, 10);
1216
1217         if (h_str)
1218                 h = (int)g_ascii_strtoll(h_str, &remain, 10);
1219
1220         if (content)
1221                 content_info = bundle_decode((const bundle_raw *)content,
1222                                 strlen(content));
1223
1224         if (cls.ops.create)
1225                 ret = cls.ops.create(instance_h, content_info, w, h, class_data);
1226
1227         if (ret < 0) {
1228                 LOGW("Create callback returns error(%d)", ret);
1229                 ret = __send_update_status(class_id, id,
1230                                 WIDGET_INSTANCE_EVENT_CREATE_ABORTED, NULL);
1231                 __instance_drop(instance_h);
1232         } else {
1233                 LOGD("%s is created", id);
1234                 ret = __send_update_status(class_id, id,
1235                         WIDGET_INSTANCE_EVENT_CREATE, NULL);
1236
1237                 aul_widget_instance_add(class_id, id);
1238         }
1239
1240         if (content_info)
1241                 bundle_free(content_info);
1242 }
1243
1244 static void __multiwindow_instance_resume(
1245                 appcore_multiwindow_base_instance_h instance_h,
1246                 void *class_data)
1247 {
1248         const char *id;
1249         const char *class_id;
1250         widget_base_class cls;
1251
1252         appcore_multiwindow_base_class_on_resume(instance_h);
1253         id = appcore_multiwindow_base_instance_get_id(instance_h);
1254         class_id = appcore_multiwindow_base_instance_get_class_id(instance_h);
1255         cls = __get_class(class_id);
1256
1257         if (cls.ops.resume)
1258                 cls.ops.resume(instance_h, class_data);
1259
1260         LOGD("%s is resumed", id);
1261         __send_update_status(class_id, id,
1262                 WIDGET_INSTANCE_EVENT_RESUME, NULL);
1263
1264         if (!__fg_signal) {
1265                 LOGD("Send fg signal to resourceD");
1266                 aul_send_app_status_change_signal(getpid(),
1267                                 __appid,
1268                                 __package_id,
1269                                 STATUS_FOREGROUND,
1270                                 APP_TYPE_WIDGET);
1271                 __fg_signal = true;
1272         }
1273 }
1274
1275 static void __multiwindow_instance_pause(
1276                 appcore_multiwindow_base_instance_h instance_h,
1277                 void *class_data)
1278 {
1279         const char *id;
1280         const char *class_id;
1281         widget_base_class cls;
1282
1283         appcore_multiwindow_base_class_on_pause(instance_h);
1284         id = appcore_multiwindow_base_instance_get_id(instance_h);
1285         class_id = appcore_multiwindow_base_instance_get_class_id(instance_h);
1286         cls = __get_class(class_id);
1287
1288         if (cls.ops.pause)
1289                 cls.ops.pause(instance_h, class_data);
1290
1291         LOGD("%s is paused", id);
1292         __send_update_status(class_id, id,
1293                 WIDGET_INSTANCE_EVENT_PAUSE, NULL);
1294
1295         if (__fg_signal) {
1296                 LOGD("Send bg signal to resourceD");
1297                 aul_send_app_status_change_signal(getpid(),
1298                                 __appid,
1299                                 __package_id,
1300                                 STATUS_BACKGROUND,
1301                                 APP_TYPE_WIDGET);
1302                 __fg_signal = false;
1303         }
1304 }
1305
1306 static void __multiwindow_instance_terminate(
1307                 appcore_multiwindow_base_instance_h instance_h,
1308                 void *class_data)
1309 {
1310         widget_base_instance_data *data;
1311         bundle *b;
1312         char *operation = NULL;
1313         bundle *content_info;
1314         widget_base_destroy_type_e reason = WIDGET_BASE_DESTROY_TYPE_TEMPORARY;
1315         int event = WIDGET_INSTANCE_EVENT_TERMINATE;
1316         const char *id;
1317         const char *class_id;
1318         widget_base_class cls;
1319
1320         id = appcore_multiwindow_base_instance_get_id(instance_h);
1321         class_id = appcore_multiwindow_base_instance_get_class_id(instance_h);
1322         data  = appcore_multiwindow_base_instance_get_extra(
1323                         (appcore_multiwindow_base_instance_h)instance_h);
1324         b = data->args;
1325         cls = __get_class(class_id);
1326
1327         if (b) {
1328                 bundle_get_str(b, WIDGET_K_OPERATION, &operation);
1329                 if (operation && strcmp(operation, "destroy") == 0)
1330                         reason = WIDGET_BASE_DESTROY_TYPE_PERMANENT;
1331         }
1332
1333         if (data->content)
1334                 content_info = bundle_decode((const bundle_raw *)data->content,
1335                                 strlen(data->content));
1336         else
1337                 content_info = bundle_create();
1338
1339         if (cls.ops.destroy)
1340                 cls.ops.destroy(instance_h, reason, content_info, class_data);
1341
1342         LOGD("%s is destroyed %d", id, reason);
1343         if (reason == WIDGET_BASE_DESTROY_TYPE_PERMANENT) {
1344                 event = WIDGET_INSTANCE_EVENT_DESTROY;
1345                 aul_widget_instance_del(class_id, id);
1346         } else {
1347                 __send_update_status(class_id, id,
1348                                 WIDGET_INSTANCE_EVENT_EXTRA_UPDATED,
1349                                 content_info);
1350         }
1351
1352         if (content_info)
1353                 bundle_free(content_info);
1354
1355         __send_update_status(class_id, id, event, NULL);
1356         appcore_multiwindow_base_class_on_terminate(instance_h);
1357 }
1358
1359 EXPORT_API int widget_base_class_on_create(widget_base_instance_h instance_h,
1360                 bundle *content, int w, int h)
1361 {
1362         appcore_multiwindow_base_class_on_create(instance_h);
1363
1364         return 0;
1365 }
1366
1367 EXPORT_API int widget_base_class_on_pause(widget_base_instance_h instance_h)
1368 {
1369         appcore_multiwindow_base_class_on_pause(instance_h);
1370
1371         return 0;
1372 }
1373
1374 EXPORT_API int widget_base_class_on_resume(widget_base_instance_h instance_h)
1375 {
1376         appcore_multiwindow_base_class_on_resume(instance_h);
1377
1378         return 0;
1379 }
1380
1381 EXPORT_API int widget_base_class_on_resize(widget_base_instance_h instance_h,
1382                 int w, int h)
1383 {
1384         return 0;
1385 }
1386
1387 EXPORT_API int widget_base_class_on_update(widget_base_instance_h instance_h,
1388                 bundle *content, int force)
1389 {
1390         return 0;
1391 }
1392
1393 EXPORT_API int widget_base_class_on_destroy(widget_base_instance_h instance_h,
1394                 widget_base_destroy_type_e reason, bundle *content)
1395 {
1396         appcore_multiwindow_base_class_on_terminate(instance_h);
1397
1398         return 0;
1399 }
1400
1401 EXPORT_API widget_base_class widget_base_class_get_default(void)
1402 {
1403         widget_base_class cls;
1404
1405         cls.ops.create = __class_on_create;
1406         cls.ops.resize = __class_on_resize;
1407         cls.ops.update = __class_on_update;
1408         cls.ops.destroy = __class_on_destroy;
1409         cls.ops.pause = __class_on_pause;
1410         cls.ops.resume = __class_on_resume;
1411
1412         return cls;
1413 }
1414
1415 EXPORT_API widget_base_class *widget_base_class_add(widget_base_class cls,
1416                 const char *class_id, void *class_data)
1417 {
1418         widget_base_class *c;
1419         appcore_multiwindow_base_class raw_cls;
1420
1421         if (!__is_widget_feature_enabled()) {
1422                 LOGE("not supported");
1423                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
1424                 return NULL;
1425         }
1426
1427         if (!class_id) {
1428                 LOGE("class is is NULL");
1429                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
1430                 return NULL;
1431         }
1432
1433         raw_cls.id = strdup(class_id);
1434         raw_cls.data = class_data;
1435         raw_cls.create = __multiwindow_instance_create;
1436         raw_cls.terminate = __multiwindow_instance_terminate;
1437         raw_cls.pause = __multiwindow_instance_pause;
1438         raw_cls.resume = __multiwindow_instance_resume;
1439         appcore_multiwindow_base_class_add(raw_cls);
1440
1441         c = malloc(sizeof(widget_base_class));
1442         if (!c)
1443                 return NULL;
1444
1445         *c = cls;
1446         c->id = strdup(class_id);
1447         __context.classes = g_list_append(__context.classes, c);
1448
1449         return c;
1450 }