improved pid usage logic; stopped inhertance of IPC in App class

src/__main__.py

@@ -17,7 +17,6 @@ from app import Application
 
 
 
-
 if __name__ == "__main__":
     ''' Set process title, get arguments, and create GTK main thread. '''
 

src/app.py

@@ -16,34 +16,38 @@ class AppLaunchException(Exception):
 
 
 
-class Application(IPCServer):
+class Application:
     """ docstring for Application. """
 
     def __init__(self, args, unknownargs):
         super(Application, self).__init__()
 
         if not settings_manager.is_trace_debug():
-            self.socket_realization_check()
-
-            if not self.is_ipc_alive:
-                for arg in unknownargs + [args.new_tab,]:
-                    if os.path.isfile(arg):
-                        message = f"FILE|{arg}"
-                        self.send_ipc_message(message)
-
-                raise AppLaunchException(f"{app_name} IPC Server Exists: Have sent path(s) to it and closing...")
+            self.load_ipc(args, unknownargs)
 
         self.setup_debug_hook()
         Window(args, unknownargs).main()
 
-    def socket_realization_check(self):
+    def load_ipc(self, args, unknownargs):
+        ipc_server = IPCServer()
+        self.ipc_realization_check(ipc_server)
+
+        if not ipc_server.is_ipc_alive:
+            for arg in unknownargs + [args.new_tab,]:
+                if os.path.isfile(arg):
+                    message = f"FILE|{arg}"
+                    ipc_server.send_ipc_message(message)
+
+            raise AppLaunchException(f"{app_name} IPC Server Exists: Have sent path(s) to it and closing...")
+
+    def ipc_realization_check(self, ipc_server):
         try:
-            self.create_ipc_listener()
+            ipc_server.create_ipc_listener()
         except Exception:
-            self.send_test_ipc_message()
+            ipc_server.send_test_ipc_message()
 
         try:
-            self.create_ipc_listener()
+            ipc_server.create_ipc_listener()
         except Exception as e:
             ...
 

src/utils/mixins/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Utils/Mixins module
+"""

src/utils/mixins/dnd_mixin.py

@@ -0,0 +1,70 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gtk
+from gi.repository import Gdk
+from gi.repository import Gio
+
+# Application imports
+
+
+
+class DnDMixin:
+
+    def _setup_dnd(self):
+        # flags   = Gtk.DestDefaults.ALL
+
+        PLAIN_TEXT_TARGET_TYPE = 70
+        URI_TARGET_TYPE        = 80
+
+        text_target        = Gtk.TargetEntry.new('text/plain', Gtk.TargetFlags(0), PLAIN_TEXT_TARGET_TYPE)
+        uri_target         = Gtk.TargetEntry.new('text/uri-list', Gtk.TargetFlags(0), URI_TARGET_TYPE)
+
+        targets            = [ text_target, uri_target ]
+
+        # action  = Gdk.DragAction.COPY
+
+        self.drag_dest_set_target_list(targets)
+        # self.drag_dest_set(flags, targets, action)
+
+        self._setup_dnd_signals()
+
+    def _setup_dnd_signals(self):
+        self.connect("drag-motion",        self._on_drag_motion)
+        self.connect('drag-drop',          self._on_drag_set)
+        self.connect("drag-data-received", self._on_drag_data_received)
+
+    def _on_drag_motion(self, widget, drag_context, x, y, time):
+        Gdk.drag_status(drag_context, drag_context.get_actions(), time)
+
+        return True
+
+    def _on_drag_set(self, widget, drag_context, data, info, time):
+        self.drag_get_data(drag_context, drag_context.list_targets()[-1], time)
+        return True
+
+    def _on_drag_data_received(self, widget, drag_context, x, y, data, info, time):
+        if info == 70: return
+
+        if info == 80:
+            uris   = data.get_uris()
+            files  = []
+
+            if len(uris) == 0:
+                uris = data.get_text().split("\n")
+
+            for uri in uris:
+                gfile = None
+                try:
+                    gfile = Gio.File.new_for_uri(uri)
+                except Exception as e:
+                    gfile = Gio.File.new_for_path(uri)
+
+                files.append(gfile)
+
+            event_system.emit('set_pre_drop_dnd', (files,))
+            drag_context.finish(True, False, time)
+

src/utils/settings_manager/start_check_mixin.py

@@ -12,9 +12,17 @@ import inspect
 
 class StartCheckMixin:
     def is_dirty_start(self) -> bool: return self._dirty_start
-    def clear_pid(self): self._clean_pid()
+
+    def clear_pid(self):
+        if not self.is_trace_debug():
+            self._clean_pid()
 
     def do_dirty_start_check(self):
+        if self.is_trace_debug():
+            pid = os.getpid()
+            self._print_pid(pid)
+            return
+
         if not os.path.exists(self._PID_FILE):
             self._write_new_pid()
         else:
@@ -31,7 +39,7 @@ class StartCheckMixin:
         try:
             os.kill(pid, 0)
         except OSError:
-            print(f"{app_name} is starting dirty...")
+            print(f"{app_name} PID exists but is not up; starting dirty...")
             self._dirty_start = True
             self._write_new_pid()
             return
@@ -41,6 +49,9 @@ class StartCheckMixin:
     def _write_new_pid(self):
         pid = os.getpid()
         self._write_pid(pid)
+        self._print_pid(pid)
+
+    def _print_pid(self, pid):
         print(f"{app_name} PID:  {pid}")
 
     def _clean_pid(self):