editor: When in Editor Mode Open in Same Window.

This means when an exiting editor sessions is open (in non-project
mode), Edi will open additional files within the same Edi
session. Editor mode, is as a "ordinary" text editor.

If there is a problem, a timeout will occur and Edi will open as
normal. There shouldn't be a problem :/

src/bin/edi_main.c

@@ -52,6 +52,8 @@ static Evas_Object *_edi_menu_init, *_edi_menu_commit, *_edi_menu_push, *_edi_me
 static Evas_Object *_edi_main_win, *_edi_main_box;
 static Eina_Bool _edi_toolbar_is_horizontal, _edi_toolbar_text_visible;
 
+static void *_edi_listener = NULL;
+
 int _edi_log_dom = -1;
 
 static void
@@ -1744,11 +1746,133 @@ _win_delete_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event
    edi_close();
 }
 
-Evas_Object *edi_main_win_get(void)
+Evas_Object *
+edi_main_win_get(void)
 {
    return _edi_main_win;
 }
 
+typedef struct _Edi_Listen_Server {
+   Ecore_Event_Handler *handler;
+   Ecore_Con_Server    *srv;
+} Edi_Listen_Server;
+
+static Eina_Bool
+_edi_listen_server_client_connect_cb(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
+{
+   Ecore_Con_Event_Client_Data *ev;
+   const char *path;
+
+   ev = event;
+   path = ev->data;
+
+   edi_mainview_open_path(path);
+   ecore_con_client_del(ev->client);
+
+   return ECORE_CALLBACK_RENEW;
+}
+
+void
+edi_listen_shutdown(void)
+{
+   Edi_Listen_Server *server = _edi_listener;
+   if (!server) return;
+
+   ecore_event_handler_del(server->handler);
+   ecore_con_server_del(server->srv);
+   free(server);
+}
+
+Eina_Bool
+edi_listen_init(void)
+{
+   Edi_Listen_Server *server = calloc(1, sizeof(Edi_Listen_Server));
+   if (!server) return EINA_FALSE;
+
+   server->srv = ecore_con_server_add(ECORE_CON_LOCAL_USER, "listener", 0, NULL);
+   if (!server->srv) return EINA_FALSE;
+
+   server->handler = ecore_event_handler_add(ECORE_CON_EVENT_CLIENT_DATA, _edi_listen_server_client_connect_cb, NULL);
+   _edi_listener = server;
+
+   return EINA_TRUE;
+}
+
+typedef struct Edi_Listen_Client {
+   char      *path;
+   Eina_Bool  success;
+} Edi_Listen_Client;
+
+static Eina_Bool
+_edi_listen_client_closed_cb(void *data, int type EINA_UNUSED, void *ev EINA_UNUSED)
+{
+   Edi_Listen_Client *client = data;
+
+   client->success = EINA_TRUE;
+
+   return ECORE_CALLBACK_RENEW;
+}
+
+static Eina_Bool
+_edi_listen_client_check_timer_cb(void *data EINA_UNUSED)
+{
+   Edi_Listen_Client *client;
+   static double total = 0.0;
+
+   client = data;
+   total += 0.1;
+
+   if (total < 3.0)
+     return ECORE_CALLBACK_RENEW;
+
+   if (client->success)
+     ecore_main_loop_quit();
+   else
+     evas_object_show(edi_main_win_get());
+
+   return ECORE_CALLBACK_DONE;
+}
+
+static Eina_Bool
+_edi_listen_client_connect_cb(void *data, int type EINA_UNUSED, void *event EINA_UNUSED)
+{
+   Ecore_Con_Event_Server_Add *ev;
+   Ecore_Con_Server *srv;
+   Edi_Listen_Client *client;
+
+   ev = event;
+   srv = ev->server;
+   client = data;
+
+   ecore_con_server_send(srv, client->path, 1 + strlen(client->path));
+   ecore_con_server_flush(srv);
+
+   return ECORE_CALLBACK_DONE;
+}
+
+Eina_Bool
+edi_listen_client_add(char *path)
+{
+   Edi_Listen_Client *client;
+   Ecore_Con_Server *srv = ecore_con_server_connect(ECORE_CON_LOCAL_USER, "listener", 0, NULL);
+   if (!srv)
+     {
+        free(path);
+        return EINA_FALSE;
+     }
+
+   client = calloc(1, sizeof(Edi_Listen_Client));
+   if (!client) return EINA_FALSE;
+
+   client->path = path;
+
+   ecore_event_handler_add(ECORE_CON_EVENT_SERVER_ADD, _edi_listen_client_connect_cb, client);
+   ecore_event_handler_add(ECORE_CON_EVENT_SERVER_DEL, _edi_listen_client_closed_cb, client);
+   ecore_timer_add(0.1, _edi_listen_client_check_timer_cb, client);
+
+   return EINA_TRUE;
+}
+
 Eina_Bool
 edi_open(const char *inputpath)
 {
@@ -1756,6 +1880,7 @@ edi_open(const char *inputpath)
    Evas_Object *vbx_tb, *hbx_tb;
    char *winname;
    char *path;
+   Eina_Bool show = EINA_TRUE;
 
    edi_project_mode_set(EINA_TRUE);
 
@@ -1763,6 +1888,14 @@ edi_open(const char *inputpath)
      {
         edi_project_set(eina_environment_home_get());
         edi_project_mode_set(EINA_FALSE);
+
+        path = realpath(inputpath, NULL);
+        if (!path) return EINA_FALSE;
+
+        if (!edi_listen_client_add(path))
+          edi_listen_init();
+        else
+          show = EINA_FALSE;
      }
 
    path = realpath(inputpath, NULL);
@@ -1856,7 +1989,8 @@ edi_open(const char *inputpath)
    ERR("Loaded project at %s", path);
    evas_object_resize(win, _edi_project_config->gui.width * elm_config_scale_get(),
                       _edi_project_config->gui.height * elm_config_scale_get());
-   evas_object_show(win);
+   if (show)
+     evas_object_show(win);
 
    if (!edi_project_mode_get())
      {
@@ -2039,6 +2173,7 @@ elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
 
  end:
    _edi_log_shutdown();
+   edi_listen_shutdown();
    elm_shutdown();
    edi_scm_shutdown();
    edi_shutdown();