src/screen_reader_switch.c

   1 #include "logger.h"
   2 #include <Eldbus.h>
   3
   4 Eina_Bool screen_reader_switch_enabled_get(Eina_Bool * value)
   5 {
   6         Eldbus_Connection *conn;
   7         Eldbus_Object *dobj;
   8         Eldbus_Proxy *proxy;
   9         Eldbus_Message *req, *reply;
  10         const char *errname = NULL, *errmsg = NULL;
  11         Eina_Bool ret = EINA_FALSE;
  12         Eldbus_Message_Iter *iter;
  13
  14         eldbus_init();
  15
  16         if (!(conn = eldbus_connection_get(ELDBUS_CONNECTION_TYPE_SESSION))) {
  17                 ERROR("Connection to session bus failed");
  18                 return EINA_FALSE;
  19         }
  20         if (!(dobj = eldbus_object_get(conn, "org.a11y.Bus", "/org/a11y/bus"))) {
  21                 ERROR("Failed to create eldbus object for /org/a11y/bus");
  22                 goto fail_obj;
  23         }
  24         if (!(proxy = eldbus_proxy_get(dobj, "org.freedesktop.DBus.Properties"))) {
  25                 ERROR("Failed to create proxy object for 'org.freedesktop.DBus.Properties'");
  26                 goto fail_proxy;
  27         }
  28         if (!(req = eldbus_proxy_method_call_new(proxy, "Get"))) {
  29                 ERROR("Failed to create method call on org.freedesktop.DBus.Properties.Get");
  30                 goto fail_proxy;
  31         }
  32         eldbus_message_ref(req);
  33
  34         if (!eldbus_message_arguments_append(req, "ss", "org.a11y.Status", "ScreenReaderEnabled")) {
  35                 ERROR("Failed to append message args");
  36                 goto fail_msg;
  37         }
  38
  39         reply = eldbus_proxy_send_and_block(proxy, req, 100);
  40         if (!reply || eldbus_message_error_get(reply, &errname, &errmsg)) {
  41                 ERROR("Unable to call method org.freedesktop.DBus.Properties.Get: %s %s", errname, errmsg);
  42                 goto fail_msg;
  43         }
  44
  45         if (!eldbus_message_arguments_get(reply, "v", &iter)) {
  46                 ERROR("Invalid answer signature");
  47                 goto fail_msg;
  48         } else {
  49                 if (!eldbus_message_iter_arguments_get(iter, "b", value)) {
  50                         ERROR("Invalid variant signature");
  51                 } else
  52                         ret = EINA_TRUE;
  53         }
  54
  55  fail_msg:
  56         eldbus_message_unref(req);
  57  fail_proxy:
  58         eldbus_object_unref(dobj);
  59  fail_obj:
  60         eldbus_connection_unref(conn);
  61
  62         eldbus_shutdown();
  63
  64         return ret;
  65 }
  66
  67 Eina_Bool screen_reader_switch_enabled_set(Eina_Bool value)
  68 {
  69         Eldbus_Connection *conn;
  70         Eldbus_Object *dobj;
  71         Eldbus_Proxy *proxy;
  72         Eldbus_Message *req;
  73
  74         Eina_Bool ret = EINA_FALSE;
  75         Eldbus_Message_Iter *iter;
  76
  77         eldbus_init();
  78
  79         if (!(conn = eldbus_connection_get(ELDBUS_CONNECTION_TYPE_SESSION))) {
  80                 ERROR("Connection to session bus failed");
  81                 return EINA_FALSE;
  82         }
  83         if (!(dobj = eldbus_object_get(conn, "org.a11y.Bus", "/org/a11y/bus"))) {
  84                 ERROR("Failed to create eldbus object");
  85                 goto fail_obj;
  86         }
  87         if (!(proxy = eldbus_proxy_get(dobj, "org.freedesktop.DBus.Properties"))) {
  88                 ERROR("Failed to create proxy object for 'org.freedesktop.DBus.Properties'");
  89                 goto fail_proxy;
  90         }
  91         if (!(req = eldbus_proxy_method_call_new(proxy, "Set"))) {
  92                 ERROR("Failed to create method call on org.freedesktop.DBus.Properties.Set");
  93                 goto fail_proxy;
  94         }
  95         eldbus_message_ref(req);
  96
  97         if (!eldbus_message_arguments_append(req, "ss", "org.a11y.Status", "ScreenReaderEnabled")) {
  98                 ERROR("Failed to append message args");
  99                 goto fail_msg;
 100         }
 101         if (!(iter = eldbus_message_iter_container_new(eldbus_message_iter_get(req), 'v', "b"))) {
 102                 ERROR("Unable to create variant iterator");
 103                 goto fail_msg;
 104         }
 105         if (!eldbus_message_iter_arguments_append(iter, "b", value)) {
 106                 ERROR("Unable to append to variant iterator");
 107                 goto fail_msg;
 108         }
 109         if (!eldbus_message_iter_container_close(eldbus_message_iter_get(req), iter)) {
 110                 ERROR("Failed to close variant iterator");
 111                 goto fail_msg;
 112         }
 113         eldbus_proxy_send(proxy, req, NULL, NULL, -1.0);
 114         ret = EINA_TRUE;
 115
 116  fail_msg:
 117         eldbus_message_unref(req);
 118  fail_proxy:
 119         eldbus_object_unref(dobj);
 120  fail_obj:
 121         eldbus_connection_unref(conn);
 122
 123         eldbus_shutdown();
 124
 125         return ret;
 126 }