src/widget_app.c

   1 /*
   2  * Copyright (c) 2015 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, WIDGET_INSTANCE_EVENT_CREATE, b, 0);
 187
 188         return ret;
 189 }
 190
 191 static int __instance_destroy(widget_class_h handle, const char *id, widget_destroy_type_e reason, bundle *b)
 192 {
 193         widget_context_s *wc = __find_context_by_id(id);
 194         int ret = 0;
 195
 196         if (wc) {
 197                 wc->state = WC_TERMINATED;
 198                 handle->ops.destroy(wc, (widget_app_destroy_type_e)reason, b, handle->user_data);
 199
 200                 ret = __send_update_status(handle->classid, id, WIDGET_INSTANCE_EVENT_TERMINATE, b, 0);
 201
 202                 contexts = g_list_remove(contexts, wc);
 203
 204                 if (wc->id)
 205                         free(wc->id);
 206                 free(wc);
 207         } else {
 208                 _E("could not find widget obj: %s", id);
 209                 ret = WIDGET_ERROR_INVALID_PARAMETER;
 210         }
 211
 212         return ret;
 213 }
 214
 215 static widget_class_h __find_class_handler(const char *class_id, widget_class_h handle)
 216 {
 217         if (!class_id || !handle)
 218                 return NULL;
 219
 220         widget_class_h head = handle;
 221
 222         while (head) {
 223                 if (head->classid && strcmp(head->classid, class_id) == 0)
 224                         return head;
 225
 226                 head = head->next;
 227         }
 228
 229         return NULL;
 230 }
 231
 232 static void __control(bundle *b)
 233 {
 234         char *class_id = NULL;
 235         char *id = NULL;
 236         char *operation = NULL;
 237         char *reason = NULL;
 238         char *remain = NULL;
 239         int destroy_type = WIDGET_DESTROY_TYPE_DEFAULT;
 240
 241         widget_class_h handle = NULL;
 242         bundle_get_str(b, WIDGET_K_CLASS, &class_id);
 243         /* for previous version compatibility, use appid for default class id */
 244         if (class_id == NULL)
 245                 class_id = appid;
 246
 247         bundle_get_str(b, WIDGET_K_INSTANCE, &id);
 248         bundle_get_str(b, WIDGET_K_OPERATION, &operation);
 249
 250         handle = __find_class_handler(class_id, class_provider);
 251         if (!handle) {
 252                 _E("no handle provided: %s", class_id);
 253                 goto error;
 254         }
 255
 256         if (!operation) {
 257                 _E("no operation provided");
 258                 goto error;
 259         }
 260
 261         if (strcmp(operation, "create") == 0) {
 262                 __instance_create(handle, id, b);
 263         } else if (strcmp(operation, "resize") == 0) {
 264                 /* TODO */
 265         } else if (strcmp(operation, "update") == 0) {
 266                 /* TODO */
 267         } else if (strcmp(operation, "destroy") == 0) {
 268                 bundle_get_str(b, WIDGET_K_REASON, &reason);
 269                 if (reason)
 270                         destroy_type = (int)g_ascii_strtoll(reason, &remain, 10);
 271
 272                 __instance_destroy(handle, id, destroy_type, b);
 273         } else if (strcmp(operation, "resume") == 0) {
 274                 /* TODO */
 275         } else if (strcmp(operation, "pause") == 0) {
 276                 /* TODO */
 277         }
 278
 279         return;
 280 error:
 281         LOGD("error on control");
 282         return;
 283 }
 284
 285 static void __show_all()
 286 {
 287         LOGD("resume");
 288 }
 289
 290 static int __aul_handler(aul_type type, bundle *b, void *data)
 291 {
 292         char *caller = NULL;
 293         char *remain = NULL;
 294
 295         switch (type) {
 296         case AUL_START:
 297                 if (b) {
 298                         bundle_get_str(b, WIDGET_K_CALLER, &caller);
 299                         if (caller)
 300                                 caller_pid = g_ascii_strtoll(caller, &remain, 10);
 301                         else {
 302                                 /* using caller appid and query pid using caller appid? */
 303                                 _E("no caller pid");
 304                         }
 305                 }
 306
 307                 __control(b);
 308                 break;
 309         case AUL_RESUME:
 310                 __show_all();
 311                 break;
 312         case AUL_TERMINATE:
 313                 widget_app_exit();
 314                 break;
 315         default:
 316                 break;
 317         }
 318
 319         return 0;
 320 }
 321
 322
 323 static int __before_loop(int argc, char **argv)
 324 {
 325         int r;
 326         bundle *kb = NULL;
 327         char *wayland_display = NULL;
 328         char *xdg_runtime_dir = NULL;
 329
 330 #if !(GLIB_CHECK_VERSION(2, 36, 0))
 331         g_type_init();
 332 #endif
 333
 334         kb = bundle_import_from_argv(argc, argv);
 335         if (kb) {
 336                 bundle_get_str(kb, AUL_K_WAYLAND_WORKING_DIR, &xdg_runtime_dir);
 337                 bundle_get_str(kb, AUL_K_WAYLAND_DISPLAY, &wayland_display);
 338                 bundle_get_str(kb, WIDGET_K_ENDPOINT, &viewer_endpoint);
 339                 if (viewer_endpoint) {
 340                         _E("viewer endpoint :%s", viewer_endpoint);
 341                         viewer_endpoint = strdup(viewer_endpoint);
 342                 } else {
 343                         _E("endpoint is missing");
 344                 }
 345
 346                 if (xdg_runtime_dir)
 347                         setenv("XDG_RUNTIME_DIR", xdg_runtime_dir, 1);
 348
 349                 if (wayland_display)
 350                         setenv("WAYLAND_DISPLAY", wayland_display, 1);
 351
 352                 bundle_free(kb);
 353                 kb = NULL;
 354         } else {
 355                 _E("failed to get launch argv");
 356         }
 357
 358         elm_init(argc, argv);
 359
 360         r = aul_launch_init(__aul_handler, NULL);
 361         if (r < 0) {
 362                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__,
 363                                         "Fail to call the aul_launch_init");
 364         }
 365
 366         r = aul_launch_argv_handler(argc, argv);
 367         if (r < 0) {
 368                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__,
 369                                         "Fail to call the aul_launch_argv_handler");
 370         }
 371
 372         r = app_get_id(&appid);
 373         if (r != APP_ERROR_NONE)
 374                 return r;
 375
 376         class_provider = app_ops->create(app_user_data);
 377         if (class_provider == NULL) {
 378                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__,
 379                                         "widget_class is NULL");
 380         }
 381
 382         return WIDGET_ERROR_NONE;
 383 }
 384
 385 static void __after_loop()
 386 {
 387         if (app_ops->terminate)
 388                 app_ops->terminate(app_user_data);
 389
 390         if (viewer_endpoint)
 391                 free(viewer_endpoint);
 392
 393         elm_shutdown();
 394 }
 395
 396 EXPORT_API int widget_app_main(int argc, char **argv,
 397                                 widget_app_lifecycle_callback_s *callback, void *user_data)
 398 {
 399         int r;
 400
 401         if (!_is_widget_feature_enabled()) {
 402                 _E("not supported");
 403                 return WIDGET_ERROR_NOT_SUPPORTED;
 404         }
 405
 406         if (argc <= 0 || argv == NULL || callback == NULL)
 407                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 408
 409         if (callback->create == NULL)
 410                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, "widget_app_create_cb() callback must be registered");
 411
 412         app_ops = callback;
 413         app_user_data = user_data;
 414         r = __before_loop(argc, argv);
 415         if (r < 0)
 416                 return r;
 417
 418         ecore_main_loop_begin();
 419         aul_status_update(STATUS_DYING);
 420         __after_loop();
 421
 422         return WIDGET_ERROR_NONE;
 423 }
 424
 425 EXPORT_API int widget_app_exit(void)
 426 {
 427         if (!_is_widget_feature_enabled()) {
 428                 _E("not supported");
 429                 return WIDGET_ERROR_NOT_SUPPORTED;
 430         }
 431
 432         ecore_main_loop_quit();
 433
 434         return WIDGET_ERROR_NONE;
 435 }
 436
 437 static gboolean __finish_event_cb(gpointer user_data)
 438 {
 439         if (user_data == NULL)
 440                 return FALSE;
 441
 442         widget_context_s *wc = (widget_context_s *)user_data;
 443
 444         switch (wc->state) {
 445         case WC_READY:
 446
 447                 break;
 448         case WC_RUNNING:
 449
 450                 break;
 451         case WC_PAUSED:
 452
 453                 break;
 454         default:
 455                 break;
 456         }
 457
 458
 459         return FALSE;
 460 }
 461
 462 EXPORT_API int widget_app_terminate_context(widget_context_h context)
 463 {
 464         if (!_is_widget_feature_enabled()) {
 465                 _E("not supported");
 466                 return WIDGET_ERROR_NOT_SUPPORTED;
 467         }
 468
 469         if (context == NULL)
 470                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 471
 472         g_idle_add(__finish_event_cb, context);
 473         return WIDGET_ERROR_NONE;
 474 }
 475
 476 EXPORT_API int widget_app_foreach_context(widget_context_cb cb, void *data)
 477 {
 478         if (!_is_widget_feature_enabled()) {
 479                 _E("not supported");
 480                 return WIDGET_ERROR_NOT_SUPPORTED;
 481         }
 482
 483         if (!cb)
 484                 return WIDGET_ERROR_INVALID_PARAMETER;
 485
 486         return WIDGET_ERROR_NONE;
 487 }
 488
 489 EXPORT_API int widget_app_add_event_handler(app_event_handler_h *event_handler,
 490                                         app_event_type_e event_type, app_event_cb callback,
 491                                         void *user_data)
 492 {
 493         if (!_is_widget_feature_enabled()) {
 494                 _E("not supported");
 495                 return WIDGET_ERROR_NOT_SUPPORTED;
 496         }
 497
 498         /* TODO */
 499         if (!event_handler || !callback)
 500                 return WIDGET_ERROR_INVALID_PARAMETER;
 501
 502         switch (event_type) {
 503         case APP_EVENT_LOW_MEMORY:
 504         case APP_EVENT_LOW_BATTERY:
 505         case APP_EVENT_LANGUAGE_CHANGED:
 506         case APP_EVENT_DEVICE_ORIENTATION_CHANGED:
 507         case APP_EVENT_REGION_FORMAT_CHANGED:
 508         case APP_EVENT_SUSPENDED_STATE_CHANGED:
 509
 510                 break;
 511         default:
 512                 return WIDGET_ERROR_INVALID_PARAMETER;
 513         }
 514
 515         return WIDGET_ERROR_NONE;
 516 }
 517
 518 EXPORT_API int widget_app_remove_event_handler(app_event_handler_h
 519                                                 event_handler)
 520 {
 521         if (!_is_widget_feature_enabled()) {
 522                 _E("not supported");
 523                 return WIDGET_ERROR_NOT_SUPPORTED;
 524         }
 525
 526         /* TODO */
 527         if (!event_handler)
 528                 return WIDGET_ERROR_INVALID_PARAMETER;
 529
 530         return WIDGET_ERROR_NONE;
 531 }
 532
 533 EXPORT_API const char* widget_app_get_id(widget_context_h context)
 534 {
 535         if (!_is_widget_feature_enabled()) {
 536                 _E("not supported");
 537                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 538                 return NULL;
 539         }
 540
 541         if (!context) {
 542                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 543                 return NULL;
 544         }
 545
 546         return context->id;
 547 }
 548
 549 EXPORT_API int widget_app_get_elm_win(widget_context_h context,
 550                                         Evas_Object **win)
 551 {
 552         widget_context_s *cxt = (widget_context_s*)context;
 553         Evas_Object *ret_win;
 554         Ecore_Wl_Window *wl_win;
 555
 556         if (!_is_widget_feature_enabled()) {
 557                 _E("not supported");
 558                 return WIDGET_ERROR_NOT_SUPPORTED;
 559         }
 560
 561         if (context == NULL || win == NULL)
 562                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 563
 564         ret_win = elm_win_add(NULL, cxt->id, ELM_WIN_BASIC);
 565         if (ret_win == NULL) {
 566                 _E("failed to create window");
 567                 return WIDGET_ERROR_FAULT;
 568         }
 569
 570         wl_win = elm_win_wl_window_get(ret_win);
 571         if (wl_win == NULL) {
 572                 _E("failed to get wayland window");
 573                 evas_object_del(ret_win);
 574                 return WIDGET_ERROR_FAULT;
 575         }
 576
 577         ecore_wl_window_class_name_set(wl_win, cxt->id);
 578
 579         *win = ret_win;
 580         cxt->win = ret_win;
 581
 582         return WIDGET_ERROR_NONE;
 583 }
 584
 585 widget_class_h _widget_class_create(widget_class_s *prev, const char *class_id,
 586                 widget_instance_lifecycle_callback_s callback, void *user_data)
 587 {
 588         widget_class_s *wc;
 589
 590         if (!_is_widget_feature_enabled()) {
 591                 _E("not supported");
 592                 set_last_result(WIDGET_ERROR_NOT_SUPPORTED);
 593                 return NULL;
 594         }
 595
 596         if (class_id == NULL) {
 597                 set_last_result(WIDGET_ERROR_INVALID_PARAMETER);
 598                 return NULL;
 599         }
 600
 601         wc = (widget_class_s *)malloc(sizeof(widget_class_s));
 602         if (wc == NULL) {
 603                 _E("failed to malloc : %s", __FUNCTION__);
 604                 set_last_result(WIDGET_ERROR_OUT_OF_MEMORY);
 605                 return NULL;
 606         }
 607
 608         wc->classid = strdup(class_id);
 609         wc->user_data = user_data;
 610         wc->ops = callback;
 611         wc->next = prev;
 612         wc->prev = NULL;
 613
 614         set_last_result(WIDGET_ERROR_NONE);
 615
 616         if (prev)
 617                 prev->prev = wc;
 618
 619         return wc;
 620 }
 621
 622 EXPORT_API widget_class_h widget_app_class_add(widget_class_h widget_class, const char *class_id,
 623                 widget_instance_lifecycle_callback_s callback, void *user_data)
 624 {
 625         return _widget_class_create(widget_class, class_id, callback, user_data);
 626 }
 627
 628 EXPORT_API widget_class_h widget_app_class_create(widget_instance_lifecycle_callback_s callback, void *user_data)
 629 {
 630         return _widget_class_create(class_provider, appid, callback, user_data);
 631 }
 632
 633 EXPORT_API int widget_app_context_set_tag(widget_context_h context, void *tag)
 634 {
 635         if (!_is_widget_feature_enabled()) {
 636                 _E("not supported");
 637                 return WIDGET_ERROR_NOT_SUPPORTED;
 638         }
 639
 640         if (context == NULL)
 641                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 642
 643         context->tag = tag;
 644
 645         return WIDGET_ERROR_NONE;
 646 }
 647
 648 EXPORT_API int widget_app_context_get_tag(widget_context_h context, void **tag)
 649 {
 650         if (!_is_widget_feature_enabled()) {
 651                 _E("not supported");
 652                 return WIDGET_ERROR_NOT_SUPPORTED;
 653         }
 654
 655         if (context == NULL || tag == NULL)
 656                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 657
 658         *tag = context->tag;
 659
 660         return WIDGET_ERROR_NONE;
 661 }
 662
 663 EXPORT_API int widget_app_context_set_content_info(widget_context_h context, bundle *content_info)
 664 {
 665         const char *class_id = NULL;
 666         int ret = 0;
 667
 668         if (!_is_widget_feature_enabled()) {
 669                 _E("not supported");
 670                 return WIDGET_ERROR_NOT_SUPPORTED;
 671         }
 672
 673         if (context == NULL || content_info == NULL)
 674                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 675
 676         if (context->provider == NULL)
 677                 return widget_app_error(WIDGET_ERROR_INVALID_PARAMETER, __FUNCTION__, NULL);
 678
 679         class_id = context->provider->classid;
 680
 681         if (class_id == NULL)
 682                 return widget_app_error(WIDGET_ERROR_FAULT, __FUNCTION__, NULL);
 683
 684         ret = __send_update_status(class_id, context->id, WIDGET_INSTANCE_EVENT_UPDATE, content_info, true);
 685
 686         if (ret < 0) {
 687                 _E("failed to send content info: %s of %s (%d)", context->id, class_id, ret);
 688                 return widget_app_error(WIDGET_ERROR_IO_ERROR, __FUNCTION__, NULL);
 689         }
 690
 691         return WIDGET_ERROR_NONE;
 692 }
 693
 694 EXPORT_API int widget_app_context_set_title(widget_context_h context, const char *title)
 695 {
 696         if (!_is_widget_feature_enabled()) {
 697                 _E("not supported");
 698                 return WIDGET_ERROR_NOT_SUPPORTED;
 699         }
 700
 701         /* TODO
 702          call elm_win_title_set()
 703          */
 704
 705         if (!context || !title)
 706                 return WIDGET_ERROR_INVALID_PARAMETER;
 707
 708         return WIDGET_ERROR_NONE;
 709 }
 710