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 int __aul_handler(aul_type type, bundle *b, void *data)
 297 {
 298         char *caller = NULL;
 299         char *remain = NULL;
 300
 301         switch (type) {
 302         case AUL_START:
 303                 if (b) {
 304                         bundle_get_str(b, WIDGET_K_CALLER, &caller);
 305                         if (caller) {
 306                                 caller_pid = g_ascii_strtoll(caller, &remain,
 307                                                 10);
 308                         } else {
 309                                 /* using caller appid and query pid using caller appid? */
 310                                 _E("no caller pid");
 311                         }
 312                 }
 313
 314                 __control(b);
 315                 break;
 316         case AUL_RESUME:
 317                 __show_all();
 318                 break;
 319         case AUL_TERMINATE:
 320                 widget_app_exit();
 321                 break;
 322         default:
 323                 break;
 324         }
 325
 326         return 0;
 327 }
 328
 329
 330 static int __before_loop(int argc, char **argv)
 331 {
 332         int r;
 333         bundle *kb = NULL;
 334         char *wayland_display = NULL;
 335         char *xdg_runtime_dir = NULL;
 336
 337 #if !(GLIB_CHECK_VERSION(2, 36, 0))
 338         g_type_init();
 339 #endif
 340
 341         kb = bundle_import_from_argv(argc, argv);
 342         if (kb) {
 343                 bundle_get_str(kb, AUL_K_WAYLAND_WORKING_DIR, &xdg_runtime_dir);
 344                 bundle_get_str(kb, AUL_K_WAYLAND_DISPLAY, &wayland_display);
 345                 bundle_get_str(kb, WIDGET_K_ENDPOINT, &viewer_endpoint);
 346                 if (viewer_endpoint) {
 347                         _E("viewer endpoint :%s", viewer_endpoint);
 348                         viewer_endpoint = strdup(viewer_endpoint);
 349                 } else {
 350                         _E("endpoint is missing");
 351                 }
 352
 353                 if (xdg_runtime_dir)
 354                         setenv("XDG_RUNTIME_DIR", xdg_runtime_dir, 1);
 355
 356                 if (wayland_display)
 357                         setenv("WAYLAND_DISPLAY", wayland_display, 1);
 358
 359                 bundle_free(kb);
 360                 kb = NULL;
 361         } else {
 362                 _E("failed to get launch argv");
 363         }
 364
 365         elm_init(argc, argv);
 366
 367         r = aul_launch_init(__aul_handler, NULL);
 368         if (r < 0) {
 369                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 370                                 __FUNCTION__,
 371                                 "Fail to call the aul_launch_init");
 372         }
 373
 374         r = aul_launch_argv_handler(argc, argv);
 375         if (r < 0) {
 376                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 377                                 __FUNCTION__,
 378                                 "Fail to call the aul_launch_argv_handler");
 379         }
 380
 381         r = app_get_id(&appid);
 382         if (r != APP_ERROR_NONE)
 383                 return r;
 384
 385         class_provider = app_ops->create(app_user_data);
 386         if (class_provider == NULL) {
 387                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 388                                 __FUNCTION__, "widget_class is NULL");
 389         }
 390
 391         return WIDGET_ERROR_NONE;
 392 }
 393
 394 static void __after_loop()
 395 {
 396         if (app_ops->terminate)
 397                 app_ops->terminate(app_user_data);
 398
 399         if (viewer_endpoint)
 400                 free(viewer_endpoint);
 401
 402         elm_shutdown();
 403 }
 404
 405 EXPORT_API int widget_app_main(int argc, char **argv,
 406                 widget_app_lifecycle_callback_s *callback, void *user_data)
 407 {
 408         int r;
 409
 410         if (!_is_widget_feature_enabled()) {
 411                 _E("not supported");
 412                 return WIDGET_ERROR_NOT_SUPPORTED;
 413         }
 414
 415         if (argc <= 0 || argv == NULL || callback == NULL)
 416                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 417                                 __FUNCTION__, NULL);
 418
 419         if (callback->create == NULL)
 420                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 421                                 __FUNCTION__,
 422                                 "widget_app_create_cb() callback must be "
 423                                 "registered");
 424
 425         app_ops = callback;
 426         app_user_data = user_data;
 427         r = __before_loop(argc, argv);
 428         if (r < 0)
 429                 return r;
 430
 431         ecore_main_loop_begin();
 432         aul_status_update(STATUS_DYING);
 433         __after_loop();
 434
 435         return WIDGET_ERROR_NONE;
 436 }
 437
 438 EXPORT_API int widget_app_exit(void)
 439 {
 440         if (!_is_widget_feature_enabled()) {
 441                 _E("not supported");
 442                 return WIDGET_ERROR_NOT_SUPPORTED;
 443         }
 444
 445         ecore_main_loop_quit();
 446
 447         return WIDGET_ERROR_NONE;
 448 }
 449
 450 static gboolean __finish_event_cb(gpointer user_data)
 451 {
 452         if (user_data == NULL)
 453                 return FALSE;
 454
 455         widget_context_s *wc = (widget_context_s *)user_data;
 456
 457         switch (wc->state) {
 458         case WC_READY:
 459
 460                 break;
 461         case WC_RUNNING:
 462
 463                 break;
 464         case WC_PAUSED:
 465
 466                 break;
 467         default:
 468                 break;
 469         }
 470
 471
 472         return FALSE;
 473 }
 474
 475 EXPORT_API int widget_app_terminate_context(widget_context_h context)
 476 {
 477         if (!_is_widget_feature_enabled()) {
 478                 _E("not supported");
 479                 return WIDGET_ERROR_NOT_SUPPORTED;
 480         }
 481
 482         if (context == NULL)
 483                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 484                                 __FUNCTION__, NULL);
 485
 486         g_idle_add(__finish_event_cb, context);
 487         return WIDGET_ERROR_NONE;
 488 }
 489
 490 EXPORT_API int widget_app_foreach_context(widget_context_cb cb, void *data)
 491 {
 492         if (!_is_widget_feature_enabled()) {
 493                 _E("not supported");
 494                 return WIDGET_ERROR_NOT_SUPPORTED;
 495         }
 496
 497         if (!cb)
 498                 return WIDGET_ERROR_INVALID_PARAMETER;
 499
 500         return WIDGET_ERROR_NONE;
 501 }
 502
 503 EXPORT_API int widget_app_add_event_handler(app_event_handler_h *event_handler,
 504                 app_event_type_e event_type, app_event_cb callback,
 505                 void *user_data)
 506 {
 507         if (!_is_widget_feature_enabled()) {
 508                 _E("not supported");
 509                 return WIDGET_ERROR_NOT_SUPPORTED;
 510         }
 511
 512         /* TODO */
 513         if (!event_handler || !callback)
 514                 return WIDGET_ERROR_INVALID_PARAMETER;
 515
 516         switch (event_type) {
 517         case APP_EVENT_LOW_MEMORY:
 518         case APP_EVENT_LOW_BATTERY:
 519         case APP_EVENT_LANGUAGE_CHANGED:
 520         case APP_EVENT_DEVICE_ORIENTATION_CHANGED:
 521         case APP_EVENT_REGION_FORMAT_CHANGED:
 522         case APP_EVENT_SUSPENDED_STATE_CHANGED:
 523
 524                 break;
 525         default:
 526                 return WIDGET_ERROR_INVALID_PARAMETER;
 527         }
 528
 529         return WIDGET_ERROR_NONE;
 530 }
 531
 532 EXPORT_API int widget_app_remove_event_handler(app_event_handler_h
 533                                                 event_handler)
 534 {
 535         if (!_is_widget_feature_enabled()) {
 536                 _E("not supported");
 537                 return WIDGET_ERROR_NOT_SUPPORTED;
 538         }
 539
 540         /* TODO */
 541         if (!event_handler)
 542                 return WIDGET_ERROR_INVALID_PARAMETER;
 543
 544         return WIDGET_ERROR_NONE;
 545 }
 546
 547 EXPORT_API const char *widget_app_get_id(widget_context_h context)
 548 {
 549         if (!_is_widget_feature_enabled()) {
 550                 _E("not supported");
 551                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 552                 return NULL;
 553         }
 554
 555         if (!context) {
 556                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 557                 return NULL;
 558         }
 559
 560         return context->id;
 561 }
 562
 563 EXPORT_API int widget_app_get_elm_win(widget_context_h context,
 564                                         Evas_Object **win)
 565 {
 566         widget_context_s *cxt = (widget_context_s *)context;
 567         Evas_Object *ret_win;
 568         Ecore_Wl_Window *wl_win;
 569
 570         if (!_is_widget_feature_enabled()) {
 571                 _E("not supported");
 572                 return WIDGET_ERROR_NOT_SUPPORTED;
 573         }
 574
 575         if (context == NULL || win == NULL)
 576                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 577                                 __FUNCTION__, NULL);
 578
 579         ret_win = elm_win_add(NULL, cxt->id, ELM_WIN_BASIC);
 580         if (ret_win == NULL) {
 581                 _E("failed to create window");
 582                 return WIDGET_ERROR_FAULT;
 583         }
 584
 585         wl_win = elm_win_wl_window_get(ret_win);
 586         if (wl_win == NULL) {
 587                 _E("failed to get wayland window");
 588                 evas_object_del(ret_win);
 589                 return WIDGET_ERROR_FAULT;
 590         }
 591
 592         ecore_wl_window_class_name_set(wl_win, cxt->id);
 593
 594         *win = ret_win;
 595         cxt->win = ret_win;
 596
 597         return WIDGET_ERROR_NONE;
 598 }
 599
 600 widget_class_h _widget_class_create(widget_class_s *prev, const char *class_id,
 601                 widget_instance_lifecycle_callback_s callback, void *user_data)
 602 {
 603         widget_class_s *wc;
 604
 605         if (!_is_widget_feature_enabled()) {
 606                 _E("not supported");
 607                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 608                 return NULL;
 609         }
 610
 611         if (class_id == NULL) {
 612                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 613                 return NULL;
 614         }
 615
 616         wc = (widget_class_s *)malloc(sizeof(widget_class_s));
 617         if (wc == NULL) {
 618                 _E("failed to malloc : %s", __FUNCTION__);
 619                 set_last_result(WIDGET_ERROR_OUT_OF_MEMORY);
 620                 return NULL;
 621         }
 622
 623         wc->classid = strdup(class_id);
 624         wc->user_data = user_data;
 625         wc->ops = callback;
 626         wc->next = prev;
 627         wc->prev = NULL;
 628
 629         set_last_result(WIDGET_ERROR_NONE);
 630
 631         if (prev)
 632                 prev->prev = wc;
 633
 634         return wc;
 635 }
 636
 637 EXPORT_API widget_class_h widget_app_class_add(widget_class_h widget_class,
 638                 const char *class_id,
 639                 widget_instance_lifecycle_callback_s callback, void *user_data)
 640 {
 641         return _widget_class_create(widget_class, class_id, callback,
 642                         user_data);
 643 }
 644
 645 EXPORT_API widget_class_h widget_app_class_create(
 646                 widget_instance_lifecycle_callback_s callback, void *user_data)
 647 {
 648         return _widget_class_create(class_provider, appid, callback, user_data);
 649 }
 650
 651 EXPORT_API int widget_app_context_set_tag(widget_context_h context, void *tag)
 652 {
 653         if (!_is_widget_feature_enabled()) {
 654                 _E("not supported");
 655                 return WIDGET_ERROR_NOT_SUPPORTED;
 656         }
 657
 658         if (context == NULL)
 659                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 660                                 __FUNCTION__, NULL);
 661
 662         context->tag = tag;
 663
 664         return WIDGET_ERROR_NONE;
 665 }
 666
 667 EXPORT_API int widget_app_context_get_tag(widget_context_h context, void **tag)
 668 {
 669         if (!_is_widget_feature_enabled()) {
 670                 _E("not supported");
 671                 return WIDGET_ERROR_NOT_SUPPORTED;
 672         }
 673
 674         if (context == NULL || tag == NULL)
 675                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 676                                 __FUNCTION__, NULL);
 677
 678         *tag = context->tag;
 679
 680         return WIDGET_ERROR_NONE;
 681 }
 682
 683 EXPORT_API int widget_app_context_set_content_info(widget_context_h context,
 684                 bundle *content_info)
 685 {
 686         const char *class_id = NULL;
 687         int ret = 0;
 688
 689         if (!_is_widget_feature_enabled()) {
 690                 _E("not supported");
 691                 return WIDGET_ERROR_NOT_SUPPORTED;
 692         }
 693
 694         if (context == NULL || content_info == NULL)
 695                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 696                                 __FUNCTION__, NULL);
 697
 698         if (context->provider == NULL)
 699                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER,
 700                                 __FUNCTION__, NULL);
 701
 702         class_id = context->provider->classid;
 703
 704         if (class_id == NULL)
 705                 return widget_app_error(WIDGET_ERROR_FAULT, __FUNCTION__, NULL);
 706
 707         ret = __send_update_status(class_id, context->id,
 708                         WIDGET_INSTANCE_EVENT_UPDATE, content_info, true);
 709
 710         if (ret < 0) {
 711                 _E("failed to send content info: %s of %s (%d)", context->id,
 712                                 class_id, ret);
 713                 return widget_app_error(WIDGET_ERROR_IO_ERROR, __FUNCTION__,
 714                                 NULL);
 715         }
 716
 717         return WIDGET_ERROR_NONE;
 718 }
 719
 720 EXPORT_API int widget_app_context_set_title(widget_context_h context,
 721                 const char *title)
 722 {
 723         if (!_is_widget_feature_enabled()) {
 724                 _E("not supported");
 725                 return WIDGET_ERROR_NOT_SUPPORTED;
 726         }
 727
 728         /* TODO
 729          call elm_win_title_set()
 730          */
 731
 732         if (!context || !title)
 733                 return WIDGET_ERROR_INVALID_PARAMETER;
 734
 735         return WIDGET_ERROR_NONE;
 736 }
 737