elput: Add event which can be raised when devices get added or removed

Signed-off-by: Chris Michael <cpmichael@osg.samsung.com>

src/lib/elput/Elput.h

@@ -74,10 +74,24 @@ typedef struct _Elput_Event_Modifiers_Send
    unsigned int group;
 } Elput_Event_Modifiers_Send;
 
+typedef enum _Elput_Device_Change_Type
+{
+   ELPUT_DEVICE_ADDED,
+   ELPUT_DEVICE_REMOVED,
+} Elput_Device_Change_Type;
+
+/* structure to represent event for device being added or removed */
+typedef struct _Elput_Event_Device_Change
+{
+   Elput_Device *device;
+   Elput_Device_Change_Type type;
+} Elput_Event_Device_Change;
+
 EAPI extern int ELPUT_EVENT_SEAT_CAPS;
 EAPI extern int ELPUT_EVENT_SEAT_FRAME;
 EAPI extern int ELPUT_EVENT_KEYMAP_SEND;
 EAPI extern int ELPUT_EVENT_MODIFIERS_SEND;
+EAPI extern int ELPUT_EVENT_DEVICE_CHANGE;
 
 /**
  * @file

src/lib/elput/elput.c

@@ -10,6 +10,7 @@ EAPI int ELPUT_EVENT_SEAT_CAPS = -1;
 EAPI int ELPUT_EVENT_SEAT_FRAME = -1;
 EAPI int ELPUT_EVENT_KEYMAP_SEND = -1;
 EAPI int ELPUT_EVENT_MODIFIERS_SEND = -1;
+EAPI int ELPUT_EVENT_DEVICE_CHANGE = -1;
 
 EAPI int
 elput_init(void)
@@ -32,6 +33,7 @@ elput_init(void)
    ELPUT_EVENT_SEAT_FRAME = ecore_event_type_new();
    ELPUT_EVENT_KEYMAP_SEND = ecore_event_type_new();
    ELPUT_EVENT_MODIFIERS_SEND = ecore_event_type_new();
+   ELPUT_EVENT_DEVICE_CHANGE = ecore_event_type_new();
 
    return _elput_init_count;
 
@@ -57,6 +59,7 @@ elput_shutdown(void)
    ELPUT_EVENT_SEAT_FRAME = -1;
    ELPUT_EVENT_KEYMAP_SEND = -1;
    ELPUT_EVENT_MODIFIERS_SEND = -1;
+   ELPUT_EVENT_DEVICE_CHANGE = -1;
 
    eina_log_domain_unregister(_elput_log_dom);
    _elput_log_dom = -1;

src/lib/elput/elput_input.c

@@ -78,6 +78,41 @@ _udev_seat_get(Elput_Manager *em, struct libinput_device *device)
    return _udev_seat_named_get(em, name);
 }
 
+static void
+_device_event_cb_free(void *data EINA_UNUSED, void *event)
+{
+   Elput_Event_Device_Change *ev;
+
+   ev = event;
+
+   if (ev->type == ELPUT_DEVICE_REMOVED)
+     {
+        Elput_Seat *seat;
+
+        seat = ev->device->seat;
+        if (seat)
+          seat->devices = eina_list_remove(seat->devices, ev->device);
+
+        _evdev_device_destroy(ev->device);
+     }
+
+   free(ev);
+}
+
+static void
+_device_event_send(Elput_Device *edev, Elput_Device_Change_Type type)
+{
+   Elput_Event_Device_Change *ev;
+
+   ev = calloc(1, sizeof(Elput_Event_Device_Change));
+   if (!ev) return;
+
+   ev->device = edev;
+   ev->type = type;
+
+   ecore_event_add(ELPUT_EVENT_DEVICE_CHANGE, ev, _device_event_cb_free, NULL);
+}
+
 static void
 _device_add(Elput_Manager *em, struct libinput_device *dev)
 {
@@ -95,22 +130,25 @@ _device_add(Elput_Manager *em, struct libinput_device *dev)
    eina_stringshare_replace(&edev->output_name, oname);
 
    eseat->devices = eina_list_append(eseat->devices, edev);
+
+   _device_event_send(edev, ELPUT_DEVICE_ADDED);
 }
 
 static void
-_device_remove(Elput_Manager *em, struct libinput_device *device)
+_device_remove(Elput_Manager *em EINA_UNUSED, struct libinput_device *device)
 {
-   Elput_Seat *eseat;
+   /* Elput_Seat *eseat; */
    Elput_Device *edev;
 
    edev = libinput_device_get_user_data(device);
    if (!edev) return;
 
-   eseat = _udev_seat_get(em, device);
+   /* eseat = _udev_seat_get(em, device); */
-   if (eseat)
+   /* if (eseat) */
-     eseat->devices = eina_list_remove(eseat->devices, edev);
+   /*   eseat->devices = eina_list_remove(eseat->devices, edev); */
 
-   _evdev_device_destroy(edev);
+   _device_event_send(edev, ELPUT_DEVICE_REMOVED);
+   /* _evdev_device_destroy(edev); */
 }
 
 static int