WIP new structure

plugins/README.txt

@@ -0,0 +1,2 @@
+### Note
+Copy the example and rename it to your desired name. The Main class and passed in arguments are required. You don't necessarily need to use the passed in socket_id or event_system.

plugins/template/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Pligin Module
+"""

plugins/template/__main__.py

@@ -0,0 +1,3 @@
+"""
+    Pligin Package
+"""

plugins/template/manifest.json

@@ -0,0 +1,13 @@
+{
+    "manifest": {
+        "name": "Example Plugin",
+        "author": "John Doe",
+        "version": "0.0.1",
+        "support": "",
+        "requests": {
+            "ui_target": "plugin_control_list",
+            "pass_fm_events": "true",
+            "bind_keys": ["Example Plugin||send_message:<Control>f"]
+        }
+    }
+}

plugins/template/plugin.py

@@ -0,0 +1,51 @@
+# Python imports
+import os
+import threading
+import subprocess
+import time
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+# Application imports
+from plugins.plugin_base import PluginBase
+
+
+
+
+# NOTE: Threads WILL NOT die with parent's destruction.
+def threaded(fn):
+    def wrapper(*args, **kwargs):
+        threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=False).start()
+    return wrapper
+
+# NOTE: Threads WILL die with parent's destruction.
+def daemon_threaded(fn):
+    def wrapper(*args, **kwargs):
+        threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=True).start()
+    return wrapper
+
+
+
+
+class Plugin(PluginBase):
+    def __init__(self):
+        super().__init__()
+
+        self.name               = "Example Plugin"  # NOTE: Need to remove after establishing private bidirectional 1-1 message bus
+                                                    #       where self.name should not be needed for message comms
+
+
+    def generate_reference_ui_element(self):
+        button = Gtk.Button(label=self.name)
+        button.connect("button-release-event", self.send_message)
+        return button
+
+    def run(self):
+        ...
+
+    def send_message(self, widget=None, eve=None):
+        message = "Hello, World!"
+        event_system.emit("display_message", ("warning", message, None))

src/new-src/__builtins__.py

@@ -0,0 +1,43 @@
+# Python imports
+import builtins
+import threading
+
+# Lib imports
+
+# Application imports
+from utils.event_system import EventSystem
+from utils.endpoint_registry import EndpointRegistry
+from utils.keybindings import Keybindings
+from utils.logger import Logger
+from utils.settings import Settings
+
+
+
+# NOTE: Threads WILL NOT die with parent's destruction.
+def threaded_wrapper(fn):
+    def wrapper(*args, **kwargs):
+        threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=False).start()
+    return wrapper
+
+# NOTE: Threads WILL die with parent's destruction.
+def daemon_threaded_wrapper(fn):
+    def wrapper(*args, **kwargs):
+        threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=True).start()
+    return wrapper
+
+
+
+# NOTE: Just reminding myself we can add to builtins two different ways...
+# __builtins__.update({"event_system": Builtins()})
+builtins.app_name          = "Cornea"
+builtins.keybindings       = Keybindings()
+builtins.event_system      = EventSystem()
+builtins.endpoint_registry = EndpointRegistry()
+builtins.settings          = Settings()
+builtins.logger            = Logger(settings.get_home_config_path(), \
+                                    _ch_log_lvl=settings.get_ch_log_lvl(), \
+                                    _fh_log_lvl=settings.get_fh_log_lvl()).get_logger()
+
+builtins.threaded          = threaded_wrapper
+builtins.daemon_threaded   = daemon_threaded_wrapper
+builtins.event_sleep_time  = 0.05

src/new-src/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Start of package.
+"""

src/new-src/__main__.py

@@ -0,0 +1,52 @@
+#!/usr/bin/python3
+
+# Python imports
+import argparse
+import faulthandler
+import traceback
+from setproctitle import setproctitle
+
+import tracemalloc
+tracemalloc.start()
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+# Application imports
+from __builtins__ import *
+from app import Application
+
+
+
+
+if __name__ == "__main__":
+    ''' Set process title, get arguments, and create GTK main thread. '''
+
+    try:
+        setproctitle(f'{app_name}')
+        faulthandler.enable()  # For better debug info
+
+        parser = argparse.ArgumentParser()
+        # Add long and short arguments
+        parser.add_argument("--debug", "-d", default="false", help="Do extra console messaging.")
+        parser.add_argument("--trace-debug", "-td", default="false", help="Disable saves, ignore IPC lock, do extra console messaging.")
+        parser.add_argument("--new-tab", "-nt", default="false", help="Opens a 'New Tab' if a handler is set for it.")
+        parser.add_argument("--file", "-f", default="default", help="JUST SOME FILE ARG.")
+
+        # Read arguments (If any...)
+        args, unknownargs = parser.parse_known_args()
+
+        if args.debug == "true":
+            settings.set_debug(True)
+
+        if args.trace_debug == "true":
+            settings.set_trace_debug(True)
+
+        settings.do_dirty_start_check()
+        Application(args, unknownargs)
+        Gtk.main()
+    except Exception as e:
+        traceback.print_exc()
+        quit()

src/new-src/app.py

@@ -0,0 +1,35 @@
+# Python imports
+import os
+
+# Lib imports
+
+# Application imports
+from utils.ipc_server import IPCServer
+from core.window import Window
+
+
+class AppLaunchException(Exception):
+    ...
+
+
+
+class Application(IPCServer):
+    ''' Create Settings and Controller classes. Bind signal to Builder. Inherit from Builtins to bind global methods and classes.'''
+
+    def __init__(self, args, unknownargs):
+        super(Application, self).__init__()
+        if not settings.is_trace_debug():
+            try:
+                self.create_ipc_listener()
+            except Exception:
+                ...
+
+            if not self.is_ipc_alive:
+                for arg in unknownargs + [args.new_tab,]:
+                    if os.path.isdir(arg):
+                        message = f"FILE|{arg}"
+                        self.send_ipc_message(message)
+
+                raise AppLaunchException(f"{app_name} IPC Server Exists: Will send path(s) to it and close...")
+
+        Window(args, unknownargs)

src/new-src/core/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Gtk Bound Signal Module
+"""

src/new-src/core/controller.py

@@ -0,0 +1,67 @@
+# 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 GLib
+
+# Application imports
+from .mixins.signals_mixins import SignalsMixins
+from .controller_data import ControllerData
+from .core_widget import CoreWidget
+
+
+
+
+class Controller(SignalsMixins, ControllerData):
+    def __init__(self, args, unknownargs):
+        self.setup_controller_data()
+
+        self._setup_styling()
+        self._setup_signals()
+        self._subscribe_to_events()
+
+        if args.no_plugins == "false":
+            self.plugins.launch_plugins()
+
+        for arg in unknownargs + [args.new_tab,]:
+            if os.path.isfile(arg):
+                message = f"FILE|{arg}"
+                event_system.emit("post_file_to_ipc", message)
+
+            if os.path.isdir(arg):
+                message = f"DIR|{arg}"
+                event_system.emit("post_file_to_ipc", message)
+
+
+    def _setup_styling(self):
+        ...
+
+    def _setup_signals(self):
+        self.window.connect("focus-out-event", self.unset_keys_and_data)
+        self.window.connect("key-press-event", self.on_global_key_press_controller)
+        self.window.connect("key-release-event", self.on_global_key_release_controller)
+
+    def _subscribe_to_events(self):
+        event_system.subscribe("handle_file_from_ipc", self.handle_file_from_ipc)
+        event_system.subscribe("handle_dir_from_ipc", self.handle_dir_from_ipc)
+        event_system.subscribe("tggl_top_main_menubar", self._tggl_top_main_menubar)
+
+    def load_glade_file(self):
+        self.builder     = Gtk.Builder()
+        self.builder.add_from_file(settings.get_glade_file())
+        self.builder.expose_object("main_window", self.window)
+
+        settings.set_builder(self.builder)
+        self.core_widget = CoreWidget()
+
+        settings.register_signals_to_builder([self, self.core_widget])
+
+    def get_core_widget(self):
+        return self.core_widget
+
+    def _tggl_top_main_menubar(self):
+        print("_tggl_top_main_menubar > stub...")

src/new-src/core/controller_data.py

@@ -0,0 +1,69 @@
+# Python imports
+import os
+import subprocess
+
+# Lib imports
+
+# Application imports
+from plugins.plugins_controller import PluginsController
+
+
+
+
+class ControllerData:
+    ''' ControllerData contains most of the state of the app at ay given time. It also has some support methods. '''
+
+    def setup_controller_data(self) -> None:
+        self.window      = settings.get_main_window()
+        self.builder     = None
+        self.core_widget = None
+        self.was_midified_key = False
+        self.ctrl_down   = False
+        self.shift_down  = False
+        self.alt_down    = False
+
+        self.load_glade_file()
+        self.plugins     = PluginsController()
+
+
+    def clear_console(self) -> None:
+        ''' Clears the terminal screen. '''
+        os.system('cls' if os.name == 'nt' else 'clear')
+
+    def call_method(self, _method_name: str, data: type) -> type:
+        '''
+        Calls a method from scope of class.
+
+                Parameters:
+                        a (obj): self
+                        b (str): method name to be called
+                        c (*): Data (if any) to be passed to the method.
+                                Note: It must be structured according to the given methods requirements.
+
+                Returns:
+                        Return data is that which the calling method gives.
+        '''
+        method_name = str(_method_name)
+        method      = getattr(self, method_name, lambda data: f"No valid key passed...\nkey={method_name}\nargs={data}")
+        return method(*data) if data else method()
+
+    def has_method(self, obj: type, method: type) -> type:
+        ''' Checks if a given method exists. '''
+        return callable(getattr(obj, method, None))
+
+    def clear_children(self, widget: type) -> None:
+        ''' Clear children of a gtk widget. '''
+        for child in widget.get_children():
+            widget.remove(child)
+
+    def get_clipboard_data(self, encoding="utf-8") -> str:
+        proc    = subprocess.Popen(['xclip','-selection', 'clipboard', '-o'], stdout=subprocess.PIPE)
+        retcode = proc.wait()
+        data    = proc.stdout.read()
+        return data.decode(encoding).strip()
+
+    def set_clipboard_data(self, data: type, encoding="utf-8") -> None:
+        proc = subprocess.Popen(['xclip','-selection','clipboard'], stdin=subprocess.PIPE)
+        proc.stdin.write(data.encode(encoding))
+        proc.stdin.close()
+        retcode = proc.wait()

src/new-src/core/core_widget.py

@@ -0,0 +1,44 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+# Application imports
+
+
+
+
+class CoreWidget(Gtk.Box):
+    def __init__(self):
+        super(CoreWidget, self).__init__()
+
+        self._builder = settings.get_builder()
+
+        self._setup_styling()
+        self._setup_signals()
+        self._load_widgets()
+
+        self.show_all()
+
+
+    def _setup_styling(self):
+        self.set_orientation(1)
+
+    def _setup_signals(self):
+        ...
+
+    def _load_widgets(self):
+        glade_box = self._builder.get_object("glade_box")
+        button    = Gtk.Button(label="Click Me!")
+
+        button.connect("clicked", self._hello_world)
+
+        self.add(button)
+        self.add(glade_box)
+
+
+
+    def _hello_world(self, widget=None, eve=None):
+        print("Hello, World!")

src/new-src/core/mixins/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Generic Mixins Module
+"""

src/new-src/core/mixins/signals/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Signals module
+"""

src/new-src/core/mixins/signals/ipc_signals_mixin.py

@@ -0,0 +1,20 @@
+# Python imports
+
+# Lib imports
+
+# Application imports
+
+
+
+
+class IPCSignalsMixin:
+    """ IPCSignalsMixin handle messages from another starting solarfm process. """
+
+    def print_to_console(self, message=None):
+        print(message)
+
+    def handle_file_from_ipc(self, path: str) -> None:
+        print(f"File From IPC: {path}")
+
+    def handle_dir_from_ipc(self, path: str) -> None:
+        print(f"Dir From IPC: {path}")

src/new-src/core/mixins/signals/keyboard_signals_mixin.py

@@ -0,0 +1,94 @@
+# Python imports
+import re
+
+# 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
+
+# Application imports
+
+
+
+valid_keyvalue_pat = re.compile(r"[a-z0-9A-Z-_\[\]\(\)\| ]")
+
+
+
+class KeyboardSignalsMixin:
+    """ KeyboardSignalsMixin keyboard hooks controller. """
+
+    # TODO: Need to set methods that use this to somehow check the keybindings state instead.
+    def unset_keys_and_data(self, widget=None, eve=None):
+        self.ctrl_down    = False
+        self.shift_down   = False
+        self.alt_down     = False
+
+    def on_global_key_press_controller(self, eve, user_data):
+        keyname = Gdk.keyval_name(user_data.keyval).lower()
+        modifiers = Gdk.ModifierType(user_data.get_state() & ~Gdk.ModifierType.LOCK_MASK)
+
+        self.was_midified_key = True if modifiers != 0 else False
+
+        if keyname.replace("_l", "").replace("_r", "") in ["control", "alt", "shift"]:
+            if "control" in keyname:
+                self.ctrl_down    = True
+            if "shift" in keyname:
+                self.shift_down   = True
+            if "alt" in keyname:
+                self.alt_down     = True
+
+    def on_global_key_release_controller(self, widget, event):
+        """ Handler for keyboard events """
+        keyname   = Gdk.keyval_name(event.keyval).lower()
+        modifiers = Gdk.ModifierType(event.get_state() & ~Gdk.ModifierType.LOCK_MASK)
+
+        if keyname.replace("_l", "").replace("_r", "") in ["control", "alt", "shift"]:
+            should_return = self.was_midified_key and (self.ctrl_down or self.shift_down or self.alt_down)
+
+            if "control" in keyname:
+                self.ctrl_down    = False
+            if "shift" in keyname:
+                self.shift_down   = False
+            if "alt" in keyname:
+                self.alt_down     = False
+
+            # NOTE: In effect a filter after releasing a modifier and we have a modifier mapped
+            if should_return:
+                self.was_midified_key = False
+                return
+
+        mapping = keybindings.lookup(event)
+        logger.debug(f"on_global_key_release_controller > key > {keyname}")
+        logger.debug(f"on_global_key_release_controller > keyval > {event.keyval}")
+        logger.debug(f"on_global_key_release_controller > mapping > {mapping}")
+
+        if mapping:
+            # See if in controller scope
+            try:
+                getattr(self, mapping)()
+                return True
+            except Exception:
+                # Must be plugins scope, event call, OR we forgot to add method to controller scope
+                if "||" in mapping:
+                    sender, eve_type = mapping.split("||")
+                else:
+                    sender = ""
+                    eve_type = mapping
+
+                self.handle_key_event_system(sender, eve_type)
+        else:
+            logger.debug(f"on_global_key_release_controller > key > {keyname}")
+
+            if self.ctrl_down:
+                if not keyname in ["1", "kp_1", "2", "kp_2", "3", "kp_3", "4", "kp_4"]:
+                    self.handle_key_event_system(None, mapping)
+                else:
+                    ...
+
+    def handle_key_event_system(self, sender, eve_type):
+        event_system.emit(eve_type)
+
+    def keyboard_close_tab(self):
+        ...

src/new-src/core/mixins/signals_mixins.py

@@ -0,0 +1,13 @@
+# Python imports
+
+# Lib imports
+from .signals.ipc_signals_mixin import IPCSignalsMixin
+from .signals.keyboard_signals_mixin import KeyboardSignalsMixin
+
+# Application imports
+
+
+
+
+class SignalsMixins(KeyboardSignalsMixin, IPCSignalsMixin):
+    ...

src/new-src/core/window.py

@@ -0,0 +1,95 @@
+# Python imports
+import time
+import signal
+
+# Lib imports
+import gi
+import cairo
+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 GLib
+
+# Application imports
+from core.controller import Controller
+
+
+class ControllerStartExceptiom(Exception):
+    ...
+
+
+
+
+class Window(Gtk.ApplicationWindow):
+    """docstring for Window."""
+
+    def __init__(self, args, unknownargs):
+        super(Window, self).__init__()
+
+        self._controller = None
+
+        self._set_window_data()
+        self._setup_styling()
+        self._setup_signals()
+        self._subscribe_to_events()
+
+        settings.set_main_window(self)
+        self._load_widgets(args, unknownargs)
+
+        self.show()
+
+
+    def _setup_styling(self):
+        self.set_default_size(settings.get_main_window_width(),
+                                settings.get_main_window_height())
+        self.set_title(f"{app_name}")
+        self.set_icon_from_file( settings.get_window_icon() )
+        self.set_gravity(5)  # 5 = CENTER
+        self.set_position(1) # 1 = CENTER, 4 = CENTER_ALWAYS
+
+    def _setup_signals(self):
+        self.connect("delete-event", self._tear_down)
+        GLib.unix_signal_add(GLib.PRIORITY_DEFAULT, signal.SIGINT, self._tear_down)
+
+    def _subscribe_to_events(self):
+        event_system.subscribe("tear_down", self._tear_down)
+
+    def _load_widgets(self, args, unknownargs):
+        if settings.is_debug():
+            self.set_interactive_debugging(True)
+
+
+        self._controller = Controller(args, unknownargs)
+        if not self._controller:
+            raise ControllerStartException("Controller exited and doesn't exist...")
+
+        self.add( self._controller.get_core_widget() )
+
+    def _set_window_data(self) -> None:
+        screen = self.get_screen()
+        visual = screen.get_rgba_visual()
+
+        if visual != None and screen.is_composited():
+            self.set_visual(visual)
+            self.set_app_paintable(True)
+            self.connect("draw", self._area_draw)
+
+        # bind css file
+        cssProvider  = Gtk.CssProvider()
+        cssProvider.load_from_path( settings.get_css_file() )
+        screen       = Gdk.Screen.get_default()
+        styleContext = Gtk.StyleContext()
+        styleContext.add_provider_for_screen(screen, cssProvider, Gtk.STYLE_PROVIDER_PRIORITY_USER)
+
+    def _area_draw(self, widget: Gtk.ApplicationWindow, cr: cairo.Context) -> None:
+        cr.set_source_rgba( *settings.get_paint_bg_color() )
+        cr.set_operator(cairo.OPERATOR_SOURCE)
+        cr.paint()
+        cr.set_operator(cairo.OPERATOR_OVER)
+
+
+    def _tear_down(self, widget=None, eve=None):
+        settings.clear_pid()
+        time.sleep(event_sleep_time)
+        Gtk.main_quit()

src/new-src/plugins/__init__.py

@@ -0,0 +1,3 @@
+"""
+    Gtk Bound Plugins Module
+"""

src/new-src/plugins/manifest.py

@@ -0,0 +1,64 @@
+# Python imports
+import os
+import json
+from os.path import join
+
+# Lib imports
+
+# Application imports
+
+
+
+
+class ManifestProcessor(Exception):
+    ...
+
+
+class Plugin:
+    path: str       = None
+    name: str       = None
+    author: str     = None
+    version: str    = None
+    support: str    = None
+    requests:{}     = None
+    reference: type = None
+
+
+class ManifestProcessor:
+    def __init__(self, path, builder):
+        manifest = join(path, "manifest.json")
+        if not os.path.exists(manifest):
+            raise Exception("Invalid Plugin Structure: Plugin doesn't have 'manifest.json'. Aboarting load...")
+
+        self._path    = path
+        self._builder = builder
+        with open(manifest) as f:
+            data           = json.load(f)
+            self._manifest = data["manifest"]
+            self._plugin   = self.collect_info()
+
+    def collect_info(self) -> Plugin:
+        plugin          = Plugin()
+        plugin.path     = self._path
+        plugin.name     = self._manifest["name"]
+        plugin.author   = self._manifest["author"]
+        plugin.version  = self._manifest["version"]
+        plugin.support  = self._manifest["support"]
+        plugin.requests = self._manifest["requests"]
+
+        return plugin
+
+    def get_loading_data(self):
+        loading_data = {}
+        requests     = self._plugin.requests
+        keys         = requests.keys()
+
+        if "pass_events" in keys:
+            if requests["pass_events"] in ["true"]:
+                loading_data["pass_events"] = True
+
+        if "bind_keys" in keys:
+            if isinstance(requests["bind_keys"], list):
+                loading_data["bind_keys"] = requests["bind_keys"]
+
+        return self._plugin, loading_data

src/new-src/plugins/plugin_base.py

@@ -0,0 +1,61 @@
+# Python imports
+import os
+import time
+
+# Lib imports
+
+# Application imports
+
+
+class PluginBaseException(Exception):
+    ...
+
+
+class PluginBase:
+    def __init__(self):
+        self.name               = "Example Plugin"  # NOTE: Need to remove after establishing private bidirectional 1-1 message bus
+                                                    #       where self.name should not be needed for message comms
+
+        self._builder           = None
+        self._ui_objects        = None
+        self._event_system      = None
+
+
+    def run(self):
+        """
+            Must define regardless if needed and can 'pass' if plugin doesn't need it.
+            Is intended to be used to setup internal signals or custom Gtk Builders/UI logic.
+        """
+        raise PluginBaseException("Method hasn't been overriden...")
+
+    def generate_reference_ui_element(self):
+        """
+            Requests Key:  'ui_target': "plugin_control_list",
+            Must define regardless if needed and can 'pass' if plugin doesn't use it.
+            Must return a widget if "ui_target" is set.
+        """
+        raise PluginBaseException("Method hasn't been overriden...")
+
+    def set_event_system(self, event_system):
+        """
+            Requests Key:  'pass_events': "true"
+            Must define in plugin if "pass_events" is set to "true" string.
+        """
+        self._event_system = event_system
+
+    def set_ui_object_collection(self, ui_objects):
+        """
+            Requests Key:  "pass_ui_objects": [""]
+            Request reference to a UI component. Will be passed back as array to plugin.
+            Must define in plugin if set and an array of valid glade UI IDs is given.
+        """
+        self._ui_objects = ui_objects
+
+    def subscribe_to_events(self):
+        ...
+
+
+    def clear_children(self, widget: type) -> None:
+        """ Clear children of a gtk widget. """
+        for child in widget.get_children():
+            widget.remove(child)

src/new-src/plugins/plugins_controller.py

@@ -0,0 +1,119 @@
+# Python imports
+import os
+import sys
+import importlib
+import traceback
+from os.path import join
+from os.path import isdir
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+from gi.repository import Gio
+
+# Application imports
+from .manifest import Plugin
+from .manifest import ManifestProcessor
+
+
+
+
+class InvalidPluginException(Exception):
+    ...
+
+
+class PluginsController:
+    """PluginsController controller"""
+
+    def __init__(self):
+        path                      = os.path.dirname(os.path.realpath(__file__))
+        sys.path.insert(0, path)  # NOTE: I think I'm not using this correctly...
+
+        self._builder             = settings.get_builder()
+        self._plugins_path        = settings.get_plugins_path()
+
+        self._plugins_dir_watcher = None
+        self._plugin_collection   = []
+
+
+    def launch_plugins(self) -> None:
+        self._set_plugins_watcher()
+        self.load_plugins()
+
+    def _set_plugins_watcher(self) -> None:
+        self._plugins_dir_watcher  = Gio.File.new_for_path(self._plugins_path) \
+                                            .monitor_directory(Gio.FileMonitorFlags.WATCH_MOVES, Gio.Cancellable())
+        self._plugins_dir_watcher.connect("changed", self._on_plugins_changed, ())
+
+    def _on_plugins_changed(self, file_monitor, file, other_file=None, eve_type=None, data=None):
+        if eve_type in [Gio.FileMonitorEvent.CREATED, Gio.FileMonitorEvent.DELETED,
+                        Gio.FileMonitorEvent.RENAMED, Gio.FileMonitorEvent.MOVED_IN,
+                                                    Gio.FileMonitorEvent.MOVED_OUT]:
+            self.reload_plugins(file)
+
+    def load_plugins(self, file: str = None) -> None:
+        print(f"Loading plugins...")
+        parent_path = os.getcwd()
+
+        for path, folder in [[join(self._plugins_path, item), item] if os.path.isdir(join(self._plugins_path, item)) else None for item in os.listdir(self._plugins_path)]:
+            try:
+                target   = join(path, "plugin.py")
+                manifest = ManifestProcessor(path, self._builder)
+
+                if not os.path.exists(target):
+                    raise InvalidPluginException("Invalid Plugin Structure: Plugin doesn't have 'plugin.py'. Aboarting load...")
+
+                plugin, loading_data = manifest.get_loading_data()
+                module               = self.load_plugin_module(path, folder, target)
+                self.execute_plugin(module, plugin, loading_data)
+            except Exception as e:
+                print(f"Malformed Plugin: Not loading -->: '{folder}' !")
+                traceback.print_exc()
+
+        os.chdir(parent_path)
+
+
+    def load_plugin_module(self, path, folder, target):
+        os.chdir(path)
+
+        locations = []
+        self.collect_search_locations(path, locations)
+
+        spec   = importlib.util.spec_from_file_location(folder, target, submodule_search_locations = locations)
+        module = importlib.util.module_from_spec(spec)
+        sys.modules[folder] = module
+        spec.loader.exec_module(module)
+
+        return module
+
+    def collect_search_locations(self, path, locations):
+        locations.append(path)
+        for file in os.listdir(path):
+            _path = os.path.join(path, file)
+            if os.path.isdir(_path):
+                self.collect_search_locations(_path, locations)
+
+    def execute_plugin(self, module: type, plugin: Plugin, loading_data: []):
+        plugin.reference = module.Plugin()
+        keys             = loading_data.keys()
+
+        if "ui_target" in keys:
+            loading_data["ui_target"].add( plugin.reference.generate_reference_ui_element() )
+            loading_data["ui_target"].show_all()
+
+        if "pass_ui_objects" in keys:
+            plugin.reference.set_ui_object_collection( loading_data["pass_ui_objects"] )
+
+        if "pass_events" in keys:
+            plugin.reference.set_fm_event_system(event_system)
+            plugin.reference.subscribe_to_events()
+
+        if "bind_keys" in keys:
+            keybindings.append_bindings( loading_data["bind_keys"] )
+
+        plugin.reference.run()
+        self._plugin_collection.append(plugin)
+
+    def reload_plugins(self, file: str = None) -> None:
+        print(f"Reloading plugins... stub.")

src/new-src/utils/endpoint_registry.py

@@ -0,0 +1,22 @@
+# Python imports
+
+# Lib imports
+
+# Application imports
+from .singleton import Singleton
+
+
+
+class EndpointRegistry(Singleton):
+    def __init__(self):
+        self._endpoints = {}
+
+    def register(self, rule, **options):
+        def decorator(f):
+            self._endpoints[rule] = f
+            return f
+
+        return decorator
+
+    def get_endpoints(self):
+        return self._endpoints

src/new-src/utils/event_system.py

@@ -0,0 +1,54 @@
+# Python imports
+from collections import defaultdict
+
+# Lib imports
+
+# Application imports
+from .singleton import Singleton
+
+
+
+class EventSystem(Singleton):
+    """ Create event system. """
+
+    def __init__(self):
+        self.subscribers = defaultdict(list)
+
+
+    def subscribe(self, event_type, fn):
+        self.subscribers[event_type].append(fn)
+
+    def unsubscribe(self, event_type, fn):
+        self.subscribers[event_type].remove(fn)
+
+    def unsubscribe_all(self, event_type):
+        self.subscribers.pop(event_type, None)
+
+    def emit(self, event_type, data = None):
+        if event_type in self.subscribers:
+            for fn in self.subscribers[event_type]:
+                if data:
+                    if hasattr(data, '__iter__') and not type(data) is str:
+                        fn(*data)
+                    else:
+                        fn(data)
+                else:
+                    fn()
+
+    def emit_and_await(self, event_type, data = None):
+        """ NOTE: Should be used when signal has only one listener and vis-a-vis """
+        if event_type in self.subscribers:
+            response = None
+            for fn in self.subscribers[event_type]:
+                if data:
+                    if hasattr(data, '__iter__') and not type(data) is str:
+                        response = fn(*data)
+                    else:
+                        response = fn(data)
+                else:
+                    response = fn()
+
+                if not response in (None, ''):
+                    break
+
+            return response

src/new-src/utils/ipc_server.py

@@ -0,0 +1,114 @@
+# Python imports
+import os
+import threading
+import time
+from multiprocessing.connection import Client
+from multiprocessing.connection import Listener
+
+# Lib imports
+
+# Application imports
+from .singleton import Singleton
+
+
+
+class IPCServer(Singleton):
+    """ Create a listener so that other {app_name} instances send requests back to existing instance. """
+    def __init__(self, ipc_address: str = '127.0.0.1', conn_type: str = "socket"):
+        self.is_ipc_alive     = False
+        self._ipc_port        = 4848
+        self._ipc_address     = ipc_address
+        self._conn_type       = conn_type
+        self._ipc_authkey     = b'' + bytes(f'{app_name}-ipc', 'utf-8')
+        self._ipc_timeout     = 15.0
+
+        if conn_type == "socket":
+            self._ipc_address = f'/tmp/{app_name}-ipc.sock'
+        elif conn_type == "full_network":
+            self._ipc_address = '0.0.0.0'
+        elif conn_type == "full_network_unsecured":
+            self._ipc_authkey = None
+            self._ipc_address = '0.0.0.0'
+        elif conn_type == "local_network_unsecured":
+            self._ipc_authkey = None
+
+        self._subscribe_to_events()
+
+    def _subscribe_to_events(self):
+        event_system.subscribe("post_file_to_ipc", self.send_ipc_message)
+
+
+    def create_ipc_listener(self) -> None:
+        if self._conn_type == "socket":
+            if os.path.exists(self._ipc_address) and settings.is_dirty_start():
+                os.unlink(self._ipc_address)
+
+            listener = Listener(address=self._ipc_address, family="AF_UNIX", authkey=self._ipc_authkey)
+        elif "unsecured" not in self._conn_type:
+            listener = Listener((self._ipc_address, self._ipc_port), authkey=self._ipc_authkey)
+        else:
+            listener = Listener((self._ipc_address, self._ipc_port))
+
+
+        self.is_ipc_alive = True
+        self._run_ipc_loop(listener)
+
+    @daemon_threaded
+    def _run_ipc_loop(self, listener) -> None:
+        # NOTE: Not thread safe if using with Gtk. Need to import GLib and use idle_add
+        while True:
+            try:
+                conn       = listener.accept()
+                start_time = time.perf_counter()
+                self._handle_ipc_message(conn, start_time)
+            except Exception as e:
+                ...
+
+        listener.close()
+
+    def _handle_ipc_message(self, conn, start_time) -> None:
+        while True:
+            msg = conn.recv()
+            if settings.is_debug():
+                print(msg)
+
+            if "FILE|" in msg:
+                file = msg.split("FILE|")[1].strip()
+                if file:
+                    event_system.emit("handle_file_from_ipc", file)
+
+            if "DIR|" in msg:
+                file = msg.split("DIR|")[1].strip()
+                if file:
+                    event_system.emit("handle_dir_from_ipc", file)
+
+                conn.close()
+                break
+
+
+            if msg in ['close connection', 'close server']:
+                conn.close()
+                break
+
+            # NOTE: Not perfect but insures we don't lock up the connection for too long.
+            end_time = time.perf_counter()
+            if (end_time - start_time) > self._ipc_timeout:
+                conn.close()
+                break
+
+
+    def send_ipc_message(self, message: str = "Empty Data...") -> None:
+        try:
+            if self._conn_type == "socket":
+                conn = Client(address=self._ipc_address, family="AF_UNIX", authkey=self._ipc_authkey)
+            elif "unsecured" not in self._conn_type:
+                conn = Client((self._ipc_address, self._ipc_port), authkey=self._ipc_authkey)
+            else:
+                conn = Client((self._ipc_address, self._ipc_port))
+
+            conn.send(message)
+            conn.close()
+        except ConnectionRefusedError as e:
+            print("Connection refused...")
+        except Exception as e:
+            print(repr(e))

src/new-src/utils/keybindings.py

@@ -0,0 +1,127 @@
+# Python imports
+import re
+
+# Lib imports
+import gi
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gdk
+
+# Application imports
+from .singleton import Singleton
+
+
+
+def logger(log = ""):
+    print(log)
+
+
+class KeymapError(Exception):
+    """ Custom exception for errors in keybinding configurations """
+
+MODIFIER = re.compile('<([^<]+)>')
+class Keybindings(Singleton):
+    """ Class to handle loading and lookup of Terminator keybindings """
+
+    modifiers = {
+        'ctrl':     Gdk.ModifierType.CONTROL_MASK,
+        'control':  Gdk.ModifierType.CONTROL_MASK,
+        'primary':  Gdk.ModifierType.CONTROL_MASK,
+        'shift':    Gdk.ModifierType.SHIFT_MASK,
+        'alt':      Gdk.ModifierType.MOD1_MASK,
+        'super':    Gdk.ModifierType.SUPER_MASK,
+        'hyper':    Gdk.ModifierType.HYPER_MASK,
+        'mod2':	    Gdk.ModifierType.MOD2_MASK
+    }
+
+    empty   = {}
+    keys    = None
+    _masks  = None
+    _lookup = None
+
+    def __init__(self):
+        self.keymap = Gdk.Keymap.get_default()
+        self.configure({})
+
+    def configure(self, bindings):
+        """ Accept new bindings and reconfigure with them """
+        self.keys = bindings
+        self.reload()
+
+    def reload(self):
+        """ Parse bindings and mangle into an appropriate form """
+        self._lookup = {}
+        self._masks  = 0
+
+        for action, bindings in list(self.keys.items()):
+            if isinstance(bindings, list):
+                bindings = (*bindings,)
+            elif not isinstance(bindings, tuple):
+                bindings = (bindings,)
+
+
+            for binding in bindings:
+                if not binding or binding == "None":
+                    continue
+
+                try:
+                    keyval, mask = self._parsebinding(binding)
+                    # Does much the same, but with worse error handling.
+                    # keyval, mask = Gtk.accelerator_parse(binding)
+                except KeymapError as e:
+                  logger(f"Keybinding reload failed to parse binding '{binding}': {e}")
+                else:
+                    if mask & Gdk.ModifierType.SHIFT_MASK:
+                        if keyval == Gdk.KEY_Tab:
+                            keyval = Gdk.KEY_ISO_Left_Tab
+                            mask &= ~Gdk.ModifierType.SHIFT_MASK
+                        else:
+                            keyvals = Gdk.keyval_convert_case(keyval)
+                            if keyvals[0] != keyvals[1]:
+                                keyval = keyvals[1]
+                                mask &= ~Gdk.ModifierType.SHIFT_MASK
+                    else:
+                        keyval = Gdk.keyval_to_lower(keyval)
+
+                    self._lookup.setdefault(mask, {})
+                    self._lookup[mask][keyval] = action
+                    self._masks |= mask
+
+    def _parsebinding(self, binding):
+        """ Parse an individual binding using Gtk's binding function """
+        mask = 0
+        modifiers = re.findall(MODIFIER, binding)
+
+        if modifiers:
+            for modifier in modifiers:
+                mask |= self._lookup_modifier(modifier)
+
+        key = re.sub(MODIFIER, '', binding)
+        if key == '':
+            raise KeymapError('No key found!')
+
+        keyval = Gdk.keyval_from_name(key)
+
+        if keyval == 0:
+            raise KeymapError(f"Key '{key}' is unrecognised...")
+        return (keyval, mask)
+
+    def _lookup_modifier(self, modifier):
+        """ Map modifier names to gtk values """
+        try:
+            return self.modifiers[modifier.lower()]
+        except KeyError:
+            raise KeymapError(f"Unhandled modifier '<{modifier}>'")
+
+    def lookup(self, event):
+        """ Translate a keyboard event into a mapped key """
+        try:
+            _found, keyval, _egp, _lvl, consumed = self.keymap.translate_keyboard_state(
+                                              event.hardware_keycode,
+                                              Gdk.ModifierType(event.get_state() & ~Gdk.ModifierType.LOCK_MASK),
+                                              event.group)
+        except TypeError:
+            logger(f"Keybinding lookup failed to translate keyboard event: {dir(event)}")
+            return None
+
+        mask = (event.get_state() & ~consumed) & self._masks
+        return self._lookup.get(mask, self.empty).get(keyval, None)

src/new-src/utils/logger.py

@@ -0,0 +1,61 @@
+# Python imports
+import os
+import logging
+
+# Lib imports
+
+# Application imports
+from .singleton import Singleton
+
+
+
+class Logger(Singleton):
+    """
+        Create a new logging object and return it.
+        :note:
+            NOSET     # Don't know the actual log level of this... (defaulting or literally none?)
+            Log Levels (From least to most)
+                Type      Value
+                CRITICAL   50
+                ERROR      40
+                WARNING    30
+                INFO       20
+                DEBUG      10
+        :param loggerName: Sets the name of the logger object. (Used in log lines)
+        :param createFile: Whether we create a log file or just pump to terminal
+
+        :return: the logging object we created
+    """
+
+    def __init__(self, config_path: str, _ch_log_lvl = logging.CRITICAL,  _fh_log_lvl = logging.INFO):
+        self._CONFIG_PATH = config_path
+        self.global_lvl   = logging.DEBUG  # Keep this at highest so that handlers can filter to their desired levels
+        self.ch_log_lvl   = _ch_log_lvl    # Prety much the only one we ever change
+        self.fh_log_lvl   = _fh_log_lvl
+
+    def get_logger(self, loggerName: str = "NO_LOGGER_NAME_PASSED", createFile: bool = True) -> logging.Logger:
+        log          = logging.getLogger(loggerName)
+        log.setLevel(self.global_lvl)
+
+        # Set our log output styles
+        fFormatter   = logging.Formatter('[%(asctime)s] %(pathname)s:%(lineno)d %(levelname)s - %(message)s', '%m-%d %H:%M:%S')
+        cFormatter   = logging.Formatter('%(pathname)s:%(lineno)d] %(levelname)s - %(message)s')
+
+        ch = logging.StreamHandler()
+        ch.setLevel(level=self.ch_log_lvl)
+        ch.setFormatter(cFormatter)
+        log.addHandler(ch)
+
+        if createFile:
+            folder = self._CONFIG_PATH
+            file   = f"{folder}/application.log"
+
+            if not os.path.exists(folder):
+                os.mkdir(folder)
+
+            fh = logging.FileHandler(file)
+            fh.setLevel(level=self.fh_log_lvl)
+            fh.setFormatter(fFormatter)
+            log.addHandler(fh)
+
+        return log

src/new-src/utils/settings/__init__.py

@@ -0,0 +1,4 @@
+"""
+    Settings module
+"""
+from .settings import Settings

src/new-src/utils/settings/settings.py

@@ -0,0 +1,177 @@
+# Python imports
+import os
+import json
+import inspect
+
+# Lib imports
+
+# Application imports
+from ..singleton import Singleton
+from .start_check_mixin import StartCheckMixin
+
+
+class MissingConfigError(Exception):
+    pass
+
+
+
+class Settings(StartCheckMixin, Singleton):
+    def __init__(self):
+        self._SCRIPT_PTH        = os.path.dirname(os.path.realpath(__file__))
+        self._USER_HOME         = os.path.expanduser('~')
+        self._USR_PATH          = f"/usr/share/{app_name.lower()}"
+
+        self._USR_CONFIG_FILE   = f"{self._USR_PATH}/settings.json"
+        self._HOME_CONFIG_PATH  = f"{self._USER_HOME}/.config/{app_name.lower()}"
+        self._PLUGINS_PATH      = f"{self._HOME_CONFIG_PATH}/plugins"
+        self._DEFAULT_ICONS     = f"{self._HOME_CONFIG_PATH}/icons"
+        self._CONFIG_FILE       = f"{self._HOME_CONFIG_PATH}/settings.json"
+        self._GLADE_FILE        = f"{self._HOME_CONFIG_PATH}/Main_Window.glade"
+        self._CSS_FILE          = f"{self._HOME_CONFIG_PATH}/stylesheet.css"
+        self._KEY_BINDINGS_FILE = f"{self._HOME_CONFIG_PATH}/key-bindings.json"
+        self._PID_FILE          = f"{self._HOME_CONFIG_PATH}/{app_name.lower()}.pid"
+        self._WINDOW_ICON       = f"{self._DEFAULT_ICONS}/{app_name.lower()}.png"
+        self._UI_WIDEGTS_PATH   = f"{self._HOME_CONFIG_PATH}/ui_widgets"
+        self._CONTEXT_MENU      = f"{self._HOME_CONFIG_PATH}/contexct_menu.json"
+
+        if not os.path.exists(self._HOME_CONFIG_PATH):
+            os.mkdir(self._HOME_CONFIG_PATH)
+        if not os.path.exists(self._PLUGINS_PATH):
+            os.mkdir(self._PLUGINS_PATH)
+
+        if not os.path.exists(self._CONFIG_FILE):
+            import shutil
+            try:
+                shutil.copyfile(self._USR_CONFIG_FILE, self._CONFIG_FILE)
+            except Exception as e:
+                raise
+
+        if not os.path.exists(self._DEFAULT_ICONS):
+            self._DEFAULT_ICONS = f"{self._USR_PATH}/icons"
+            if not os.path.exists(self._DEFAULT_ICONS):
+                raise MissingConfigError("Unable to find the application icons directory.")
+        if not os.path.exists(self._GLADE_FILE):
+            self._GLADE_FILE   = f"{self._USR_PATH}/Main_Window.glade"
+            if not os.path.exists(self._GLADE_FILE):
+                raise MissingConfigError("Unable to find the application Glade file.")
+        if not os.path.exists(self._KEY_BINDINGS_FILE):
+            self._KEY_BINDINGS_FILE = f"{self._USR_PATH}/key-bindings.json"
+            if not os.path.exists(self._KEY_BINDINGS_FILE):
+                raise MissingConfigError("Unable to find the application Keybindings file.")
+        if not os.path.exists(self._CSS_FILE):
+            self._CSS_FILE     = f"{self._USR_PATH}/stylesheet.css"
+            if not os.path.exists(self._CSS_FILE):
+                raise MissingConfigError("Unable to find the application Stylesheet file.")
+        if not os.path.exists(self._WINDOW_ICON):
+            self._WINDOW_ICON  = f"{self._USR_PATH}/icons/{app_name.lower()}.png"
+            if not os.path.exists(self._WINDOW_ICON):
+                raise MissingConfigError("Unable to find the application icon.")
+        if not os.path.exists(self._UI_WIDEGTS_PATH):
+            self._UI_WIDEGTS_PATH  = f"{self._USR_PATH}/ui_widgets"
+        if not os.path.exists(self._CONTEXT_MENU):
+            self._CONTEXT_MENU  = f"{self._USR_PATH}/contexct_menu.json"
+
+
+        try:
+            with open(self._KEY_BINDINGS_FILE) as file:
+                bindings = json.load(file)["keybindings"]
+                keybindings.configure(bindings)
+        except Exception as e:
+            print( f"Settings: {self._KEY_BINDINGS_FILE}\n\t\t{repr(e)}" )
+
+        try:
+            with open(self._CONTEXT_MENU) as file:
+                self._context_menu_data = json.load(file)
+        except Exception as e:
+            print( f"Settings: {self._CONTEXT_MENU}\n\t\t{repr(e)}" )
+
+
+        self._main_window   = None
+        self._main_window_w = 800
+        self._main_window_h = 600
+        self._builder       = None
+        self.PAINT_BG_COLOR = (0, 0, 0, 0.54)
+
+        self._trace_debug   = False
+        self._debug         = False
+        self._dirty_start   = False
+
+        self.load_settings()
+
+
+    def register_signals_to_builder(self, classes=None):
+        handlers = {}
+
+        for c in classes:
+            methods = None
+            try:
+                methods = inspect.getmembers(c, predicate=inspect.ismethod)
+                handlers.update(methods)
+            except Exception as e:
+                ...
+
+        self._builder.connect_signals(handlers)
+
+    def set_main_window(self, window): self._main_window  = window
+    def set_builder(self, builder) -> any:  self._builder = builder
+
+
+    def get_monitor_data(self) -> list:
+        screen = self._main_window.get_screen()
+        monitors = []
+        for m in range(screen.get_n_monitors()):
+            monitors.append(screen.get_monitor_geometry(m))
+            print("{}x{}+{}+{}".format(monitor.width, monitor.height, monitor.x, monitor.y))
+
+        return monitors
+
+    def get_main_window(self)        -> any: return self._main_window
+    def get_main_window_width(self)  -> any: return self._main_window_w
+    def get_main_window_height(self) -> any: return self._main_window_h
+    def get_builder(self)            -> any: return self._builder
+    def get_paint_bg_color(self)     -> any: return self.PAINT_BG_COLOR
+    def get_glade_file(self)         -> str: return self._GLADE_FILE
+    def get_ui_widgets_path(self)    -> str: return self._UI_WIDEGTS_PATH
+    def get_context_menu_data(self)  -> str: return self._context_menu_data
+
+    def get_plugins_path(self)     -> str:   return self._PLUGINS_PATH
+    def get_icon_theme(self)       -> str:   return self._ICON_THEME
+    def get_css_file(self)         -> str:   return self._CSS_FILE
+    def get_home_config_path(self) -> str:   return self._HOME_CONFIG_PATH
+    def get_window_icon(self)      -> str:   return self._WINDOW_ICON
+    def get_home_path(self)        -> str:   return self._USER_HOME
+
+    # Filter returns
+    def get_office_filter(self)    -> tuple: return tuple(self._settings["filters"]["office"])
+    def get_vids_filter(self)      -> tuple: return tuple(self._settings["filters"]["videos"])
+    def get_text_filter(self)      -> tuple: return tuple(self._settings["filters"]["text"])
+    def get_music_filter(self)     -> tuple: return tuple(self._settings["filters"]["music"])
+    def get_images_filter(self)    -> tuple: return tuple(self._settings["filters"]["images"])
+    def get_pdf_filter(self)       -> tuple: return tuple(self._settings["filters"]["pdf"])
+
+    def get_success_color(self)    -> str:   return self._theming["success_color"]
+    def get_warning_color(self)    -> str:   return self._theming["warning_color"]
+    def get_error_color(self)      -> str:   return self._theming["error_color"]
+
+    def is_trace_debug(self)       -> str:   return self._trace_debug
+    def is_debug(self)             -> str:   return self._debug
+
+    def get_ch_log_lvl(self)       -> str:   return self._settings["debugging"]["ch_log_lvl"]
+    def get_fh_log_lvl(self)       -> str:   return self._settings["debugging"]["fh_log_lvl"]
+
+    def set_trace_debug(self, trace_debug):
+        self._trace_debug = trace_debug
+
+    def set_debug(self, debug):
+        self._debug = debug
+
+
+    def load_settings(self):
+        with open(self._CONFIG_FILE) as f:
+            self._settings = json.load(f)
+            self._config   = self._settings["config"]
+            self._theming  = self._settings["theming"]
+
+    def save_settings(self):
+        with open(self._CONFIG_FILE, 'w') as outfile:
+            json.dump(self._settings, outfile, separators=(',', ':'), indent=4)

src/new-src/utils/settings/start_check_mixin.py

@@ -0,0 +1,50 @@
+# Python imports
+import os
+import json
+import inspect
+
+# Lib imports
+
+# Application imports
+
+
+
+
+class StartCheckMixin:
+    def is_dirty_start(self) -> bool: return self._dirty_start
+    def clear_pid(self): self._clean_pid()
+
+    def do_dirty_start_check(self):
+        if not os.path.exists(self._PID_FILE):
+            self._write_new_pid()
+        else:
+            with open(self._PID_FILE, "r") as _pid:
+                pid = _pid.readline().strip()
+                if pid not in ("", None):
+                    self._check_alive_status(int(pid))
+                else:
+                    self._write_new_pid()
+
+    """ Check For the existence of a unix pid. """
+    def _check_alive_status(self, pid):
+        print(f"PID Found: {pid}")
+        try:
+            os.kill(pid, 0)
+        except OSError:
+            print(f"{app_name} is starting dirty...")
+            self._dirty_start = True
+            self._write_new_pid()
+            return
+
+        print("PID is alive... Let downstream errors (sans debug args) handle app closure propigation.")
+
+    def _write_new_pid(self):
+        pid = os.getpid()
+        self._write_pid(pid)
+
+    def _clean_pid(self):
+        os.unlink(self._PID_FILE)
+
+    def _write_pid(self, pid):
+        with open(self._PID_FILE, "w") as _pid:
+            _pid.write(f"{pid}")

src/new-src/utils/singleton.py

@@ -0,0 +1,24 @@
+# Python imports
+
+# Lib imports
+
+# Application imports
+
+
+
+class SingletonError(Exception):
+    pass
+
+
+
+class Singleton:
+    ccount = 0
+
+    def __new__(cls, *args, **kwargs):
+        obj        = super(Singleton, cls).__new__(cls)
+        cls.ccount += 1
+
+        if cls.ccount == 2:
+            raise SingletonError(f"Exceeded {cls.__name__} instantiation limit...")
+
+        return obj

src/old-src/utils/__init__.py

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

user_config/bin/cornea

@@ -9,9 +9,15 @@
 
 function main() {
     call_path=`pwd`
-    cd "${call_path}"
-    echo "Working Dir: " $(pwd)
+    path=""
 
+    if [[ ! "${1::1}" == /* ]]; then
+        path="${call_path}/${1}"
+    else
+        path="${1}"
+    fi
+
+    cd "/opt/"
     python /opt/cornea.zip "$@"
 }
 main "$@";

user_config/usr/share/cornea/key-bindings.json

@@ -0,0 +1,23 @@
+{
+    "keybindings": {
+        "help"                   : "F1",
+        "rename_files"           : ["F2", "<Control>e"],
+        "open_terminal"          : "F4",
+        "refresh_tab"            : ["F5", "<Control>r"],
+        "delete_files"           : "Delete",
+        "tggl_top_main_menubar"  : "Alt_L",
+        "trash_files"            : "<Shift><Control>t",
+        "tear_down"              : "<Control>q",
+        "go_up"                  : "<Control>Up",
+        "go_home"                : "<Control>slash",
+        "grab_focus_path_entry"  : "<Control>l",
+        "open_files"             : "<Control>o",
+        "show_hide_hidden_files" : "<Control>h",
+        "keyboard_create_tab"    : "<Control>t",
+        "keyboard_close_tab"     : "<Control>w",
+        "keyboard_copy_files"    : "<Control>c",
+        "keyboard_cut_files"     : "<Control>x",
+        "paste_files"            : "<Control>v",
+        "show_new_file_menu"     : "<Control>n"
+    }
+}

user_config/usr/share/cornea/settings.json

@@ -0,0 +1,40 @@
+{
+    "config": {
+        "base_of_home": "",
+        "hide_hidden_files": "true",
+        "thumbnailer_path": "ffmpegthumbnailer",
+        "go_past_home": "true",
+        "lock_folder": "false",
+        "locked_folders": "venv::::flasks",
+        "mplayer_options": "-quiet -really-quiet -xy 1600 -geometry 50%:50%",
+        "music_app": "/opt/deadbeef/bin/deadbeef",
+        "media_app": "mpv",
+        "image_app": "mirage",
+        "office_app": "libreoffice",
+        "pdf_app": "evince",
+        "text_app": "leafpad",
+        "file_manager_app": "solarfm",
+        "terminal_app": "terminator",
+        "remux_folder_max_disk_usage": "8589934592"
+    },
+    "filters": {
+        "meshs":  [".blend", ".dae", ".fbx", ".gltf", ".obj", ".stl"],
+        "code":   [".cpp", ".css", ".c", ".go", ".html", ".htm", ".java", ".js", ".json", ".lua", ".md", ".py", ".rs", ".toml", ".xml", ".pom"],
+        "videos": [".mkv", ".mp4", ".webm", ".avi", ".mov", ".m4v", ".mpg", ".mpeg", ".wmv", ".flv"],
+        "office": [".doc", ".docx", ".xls", ".xlsx", ".xlt", ".xltx", ".xlm", ".ppt", ".pptx", ".pps", ".ppsx", ".odt", ".rtf"],
+        "images": [".png", ".jpg", ".jpeg", ".gif", ".ico", ".tga", ".webp"],
+        "text":   [".txt", ".text", ".sh", ".cfg", ".conf", ".log"],
+        "music":  [".psf", ".mp3", ".ogg", ".flac", ".m4a"],
+        "pdf":    [".pdf"]
+
+   },
+   "theming":{
+       "success_color":"#88cc27",
+       "warning_color":"#ffa800",
+       "error_color":"#ff0000"
+   },
+   "debugging": {
+       "ch_log_lvl": 10,
+       "fh_log_lvl": 20
+   }
+}