src/versions/solarfm-0.0.1/SolarFM/solarfm/core/controller.py

@@ -7,12 +7,12 @@ gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk, GLib
 
 # Application imports
+from widgets.context_menu_widget import ContextMenuWidget
 from .mixins.exception_hook_mixin import ExceptionHookMixin
 from .mixins.ui_mixin import UIMixin
 from .signals.ipc_signals_mixin import IPCSignalsMixin
 from .signals.keyboard_signals_mixin import KeyboardSignalsMixin
 from .controller_data import Controller_Data
-from .context_menu import ContextMenu
 
 
 
@@ -23,7 +23,7 @@ class Controller(UIMixin, KeyboardSignalsMixin, IPCSignalsMixin, ExceptionHookMi
         self.setup_controller_data()
         self.generate_windows(self.fm_controller_data)
 
-        cm = ContextMenu()
+        cm = ContextMenuWidget()
         cm.build_context_menu()
 
         if args.no_plugins == "false":

src/versions/solarfm-0.0.1/SolarFM/solarfm/core/mixins/ui/grid_mixin.py

@@ -9,8 +9,9 @@ gi.require_version('Gdk', '3.0')
 from gi.repository import Gtk, Gdk, GLib, Gio, GdkPixbuf
 
 # Application imports
-
-
+from widgets.tab_header import TabHeader
+from widgets.icon_grid_widget import IconGridWidget
+from widgets.icon_tree_widget import IconTreeWidget
 
 
 # NOTE: Consider trying to use Gtk.TreeView with css that turns it into a grid...
@@ -47,7 +48,7 @@ class Icon(Gtk.HBox):
 
 
 class GridMixin:
-    """docstring for WidgetMixin"""
+    """docstring for GridMixin"""
 
     def load_store(self, tab, store, save_state=False):
         store.clear()
@@ -95,127 +96,50 @@ class GridMixin:
 
 
     def create_tab_widget(self, tab):
-        tab_widget = Gtk.ButtonBox()
-        label = Gtk.Label()
-        tid   = Gtk.Label()
-        close = Gtk.Button()
-        icon  = Gtk.Image(stock=Gtk.STOCK_CLOSE)
-
-        label.set_label(f"{tab.get_end_of_path()}")
-        label.set_width_chars(len(tab.get_end_of_path()))
-        label.set_xalign(0.0)
-        tid.set_label(f"{tab.get_id()}")
-
-        close.add(icon)
-        tab_widget.add(label)
-        tab_widget.add(close)
-        tab_widget.add(tid)
-
-        close.connect("released", self.close_tab)
-        tab_widget.show_all()
-        tid.hide()
-        return tab_widget
+        return TabHeader(tab, self.close_tab)
 
     def create_scroll_and_store(self, tab, wid, use_tree_view=False):
+        scroll = Gtk.ScrolledWindow()
+
         if not use_tree_view:
-            scroll, store = self.create_icon_grid_widget(tab, wid)
+            grid = self.create_icon_grid_widget()
         else:
             # TODO: Fix global logic to make the below work too
-            scroll, store = self.create_icon_tree_widget(tab, wid)
+            grid = self.create_icon_tree_widget()
 
-        return scroll, store
-
-    def create_icon_grid_widget(self, tab, wid):
-        scroll = Gtk.ScrolledWindow()
-        grid   = Gtk.IconView()
-        store  = Gtk.ListStore(GdkPixbuf.Pixbuf or GdkPixbuf.PixbufAnimation or None, str or None)
-
-        grid.set_model(store)
-        grid.set_pixbuf_column(0)
-        grid.set_text_column(1)
-
-        grid.set_item_orientation(1)
-        grid.set_selection_mode(3)
-        grid.set_item_width(96)
-        grid.set_item_padding(8)
-        grid.set_margin(12)
-        grid.set_row_spacing(18)
-        grid.set_columns(-1)
-        grid.set_spacing(12)
-        grid.set_column_spacing(18)
-
-        grid.connect("button_release_event", self.grid_icon_single_click)
-        grid.connect("item-activated",       self.grid_icon_double_click)
-        grid.connect("selection-changed",    self.grid_set_selected_items)
-        grid.connect("drag-data-get",        self.grid_on_drag_set)
-        grid.connect("drag-data-received",   self.grid_on_drag_data_received)
-        grid.connect("drag-motion",          self.grid_on_drag_motion)
-
-        URI_TARGET_TYPE  = 80
-        uri_target       = Gtk.TargetEntry.new('text/uri-list', Gtk.TargetFlags(0), URI_TARGET_TYPE)
-        targets          = [ uri_target ]
-        action           = Gdk.DragAction.COPY
-        grid.enable_model_drag_dest(targets, action)
-        grid.enable_model_drag_source(0, targets, action)
-
-        grid.show_all()
         scroll.add(grid)
-        grid.set_name(f"{wid}|{tab.get_id()}")
         scroll.set_name(f"{wid}|{tab.get_id()}")
+        grid.set_name(f"{wid}|{tab.get_id()}")
         self.builder.expose_object(f"{wid}|{tab.get_id()}|icon_grid", grid)
         self.builder.expose_object(f"{wid}|{tab.get_id()}", scroll)
-        return scroll, store
 
-    def create_icon_tree_widget(self, tab, wid):
-        scroll = Gtk.ScrolledWindow()
-        grid   = Gtk.TreeView()
-        store  = Gtk.TreeStore(GdkPixbuf.Pixbuf or GdkPixbuf.PixbufAnimation or None, str or None)
-        column = Gtk.TreeViewColumn("Icons")
-        icon   = Gtk.CellRendererPixbuf()
-        name   = Gtk.CellRendererText()
-        selec  = grid.get_selection()
+        return scroll, grid.get_store()
 
-        grid.set_model(store)
-        selec.set_mode(3)
-        column.pack_start(icon, False)
-        column.pack_start(name, True)
-        column.add_attribute(icon, "pixbuf", 0)
-        column.add_attribute(name, "text", 1)
-        column.set_expand(False)
-        column.set_sizing(2)
-        column.set_min_width(120)
-        column.set_max_width(74)
+    def create_icon_grid_widget(self):
+        grid = IconGridWidget()
+        grid._setup_additional_signals(
+            self.grid_icon_single_click,
+            self.grid_icon_double_click,
+            self.grid_set_selected_items,
+            self.grid_on_drag_set,
+            self.grid_on_drag_data_received,
+            self.grid_on_drag_motion
+        )
 
-        grid.append_column(column)
-        grid.set_search_column(1)
-        grid.set_rubber_banding(True)
-        grid.set_headers_visible(False)
-        grid.set_enable_tree_lines(False)
+        return grid
 
-        grid.connect("button_release_event", self.grid_icon_single_click)
-        grid.connect("row-activated",        self.grid_icon_double_click)
-        grid.connect("drag-data-get",        self.grid_on_drag_set)
-        grid.connect("drag-data-received",   self.grid_on_drag_data_received)
-        grid.connect("drag-motion",          self.grid_on_drag_motion)
+    def create_icon_tree_widget(self):
+        grid = IconTreeWidget()
+        grid._setup_additional_signals(
+            self.grid_icon_single_click,
+            self.grid_icon_double_click,
+            self.grid_on_drag_set,
+            self.grid_on_drag_data_received,
+            self.grid_on_drag_motion
+        )
 
-        URI_TARGET_TYPE  = 80
-        uri_target       = Gtk.TargetEntry.new('text/uri-list', Gtk.TargetFlags(0), URI_TARGET_TYPE)
-        targets          = [ uri_target ]
-        action           = Gdk.DragAction.COPY
-        grid.enable_model_drag_dest(targets, action)
-        grid.enable_model_drag_source(0, targets, action)
-
-        grid.show_all()
-        scroll.add(grid)
-        grid.set_name(f"{wid}|{tab.get_id()}")
-        scroll.set_name(f"{wid}|{tab.get_id()}")
-        self.builder.expose_object(f"{wid}|{tab.get_id()}|icon_grid", grid)
-        self.builder.expose_object(f"{wid}|{tab.get_id()}", scroll)
         grid.columns_autosize()
-
-        self.builder.expose_object(f"{wid}|{tab.get_id()}", scroll)
-        return scroll, store
-
+        return grid
 
     def get_store_and_label_from_notebook(self, notebook, _name):
         icon_grid = None

src/versions/solarfm-0.0.1/SolarFM/solarfm/core/mixins/ui/widget_file_action_mixin.py

@@ -7,6 +7,7 @@ gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk, GObject, GLib, Gio
 
 # Application imports
+from widgets.io_widget import IOWidget
 
 
 
@@ -306,7 +307,6 @@ class WidgetFileActionMixin:
                     file.make_directory(cancellable=None)
                     continue
 
-
                 type = file.query_file_type(flags=Gio.FileQueryInfoFlags.NONE)
                 if type == Gio.FileType.DIRECTORY:
                     wid, tid  = self.fm_controller.get_active_wid_and_tid()
@@ -320,79 +320,33 @@ class WidgetFileActionMixin:
                     if action == "move" or action == "rename":
                         tab.move_file(fPath, tPath)
                 else:
-                    if action == "copy":
-                        container, cancle_eve, update_progress, finish_callback = self.create_io_widget(action, file)
-                        file.copy_async(destination=target, flags=Gio.FileCopyFlags.BACKUP,
-                                        io_priority=98, cancellable=cancle_eve,
-                                        progress_callback=update_progress, callback=finish_callback)
-                        self.builder.get_object("io_list").add(container)
-                    if action == "move" or action == "rename":
-                        container, cancle_eve, update_progress, finish_callback = self.create_io_widget(action, file)
-                        file.move_async(destination=target, flags=Gio.FileCopyFlags.BACKUP,
-                                        io_priority=98, cancellable=cancle_eve,
-                                        progress_callback=None, callback=finish_callback) # NOTE: progress_callback causes seg fault when set
-                        self.builder.get_object("io_list").add(container)
+                    io_widget = IOWidget(action, file)
 
+                    if action == "copy":
+                        file.copy_async(destination=target,
+                                        flags=Gio.FileCopyFlags.BACKUP,
+                                        io_priority=98,
+                                        cancellable=io_widget.cancle_eve,
+                                        progress_callback=io_widget.update_progress,
+                                        callback=io_widget.finish_callback)
+
+                        self.builder.get_object("io_list").add(io_widget)
+                    if action == "move" or action == "rename":
+                        file.move_async(destination=target,
+                                        flags=Gio.FileCopyFlags.BACKUP,
+                                        io_priority=98,
+                                        cancellable=io_widget.cancle_eve,
+                                        progress_callback=None,
+                                        # NOTE: progress_callback here causes seg fault when set
+                                        callback=io_widget.finish_callback)
+
+                        self.builder.get_object("io_list").add(io_widget)
 
             except GObject.GError as e:
                 raise OSError(e)
 
         self.exists_file_rename_bttn.set_sensitive(False)
 
-    def create_io_widget(self, action, file):
-        cancle_eve  = Gio.Cancellable.new()
-        container   = Gtk.Box()
-        stats       = Gtk.Box()
-        label       = Gtk.Label()
-        progress    = Gtk.ProgressBar()
-        cncl_button = Gtk.Button(label="Cancel")
-        del_button  = Gtk.Button(label="Clear")
-        io_list     = self.builder.get_object("io_list")
-        label.set_label(file.get_basename())
-
-        progress.set_show_text(True)
-        progress.set_text(f"{action.upper()}ING")
-
-
-        def do_cancel(widget, container, eve):
-            print(f"Canceling: [{action}] of {file.get_basename()} ...")
-            eve.cancel()
-
-        def update_progress(current, total, eve=None):
-            progress.set_fraction(current/total)
-
-        def finish_callback(file, task=None, eve=None):
-            if action == "move":
-                status = file.move_finish(task)
-            if action == "copy":
-                status = file.copy_finish(task)
-
-            if status:
-                self.builder.get_object("io_list").remove(container)
-            else:
-                print(f"{action} of {file.get_basename()} failed...")
-
-        def delete_container(widget, eve):
-            io_list.remove(container)
-
-
-        stats.pack_end(del_button, False, False, 5)
-        del_button.connect("clicked", delete_container, ())
-
-        if not action in ("create", "rename"):
-            stats.pack_end(cncl_button, False, False, 5)
-            cncl_button.connect("clicked", do_cancel, *(container, cancle_eve))
-
-        container.set_orientation(1)
-        stats.set_orientation(0)
-        stats.add(progress)
-
-        container.add(label)
-        container.add(stats)
-        container.show_all()
-
-        return container, cancle_eve, update_progress, finish_callback
-
 
     def setup_exists_data(self, from_file, to_file):
         from_info             = from_file.query_info("standard::*,time::modified", 0, cancellable=None)

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/__init__.py

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

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/context_menu_widget.py

@@ -9,9 +9,11 @@ from gi.repository import GLib
 # Application imports
 
 
-class ContextMenu(Gtk.Menu):
+class ContextMenuWidget(Gtk.Menu):
+    """docstring for ContextMenuWidget"""
+
     def __init__(self):
-        super(ContextMenu, self).__init__()
+        super(ContextMenuWidget, self).__init__()
         self._builder           = settings.get_builder()
         self._context_menu_data = settings.get_context_menu_data()
         self._window            = settings.get_main_window()

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/icon_grid_widget.py

@@ -0,0 +1,72 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gtk, Gdk, GdkPixbuf
+
+
+# Application imports
+
+
+class IconGridWidget(Gtk.IconView):
+    """docstring for IconGridWidget"""
+
+    def __init__(self):
+        super(IconGridWidget, self).__init__()
+
+        self._store = None
+
+        self._setup_styling()
+        self._setup_signals()
+        self._set_up_dnd()
+        self._load_widgets()
+
+        self.show_all()
+
+    def get_store(self):
+        return self._store
+
+    def _setup_styling(self):
+        self.set_pixbuf_column(0)
+        self.set_text_column(1)
+
+        self.set_item_orientation(1)
+        self.set_selection_mode(3)
+        self.set_item_width(96)
+        self.set_item_padding(8)
+        self.set_margin(12)
+        self.set_row_spacing(18)
+        self.set_columns(-1)
+        self.set_spacing(12)
+        self.set_column_spacing(18)
+
+    def _setup_signals(self):
+        ...
+
+    def _setup_additional_signals(self, grid_icon_single_click,
+                                        grid_icon_double_click,
+                                        grid_set_selected_items,
+                                        grid_on_drag_set,
+                                        grid_on_drag_data_received,
+                                        grid_on_drag_motion):
+
+        self.connect("button_release_event", grid_icon_single_click)
+        self.connect("item-activated",       grid_icon_double_click)
+        self.connect("selection-changed",    grid_set_selected_items)
+        self.connect("drag-data-get",        grid_on_drag_set)
+        self.connect("drag-data-received",   grid_on_drag_data_received)
+        self.connect("drag-motion",          grid_on_drag_motion)
+
+    def _load_widgets(self):
+        self._store = Gtk.ListStore(GdkPixbuf.Pixbuf or GdkPixbuf.PixbufAnimation or None, str or None)
+        self.set_model(self._store)
+
+    def _set_up_dnd(self):
+        URI_TARGET_TYPE  = 80
+        uri_target       = Gtk.TargetEntry.new('text/uri-list', Gtk.TargetFlags(0), URI_TARGET_TYPE)
+        targets          = [ uri_target ]
+        action           = Gdk.DragAction.COPY
+        self.enable_model_drag_dest(targets, action)
+        self.enable_model_drag_source(0, targets, action)

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/icon_tree_widget.py

@@ -0,0 +1,79 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gtk, Gdk, GdkPixbuf
+
+# Application imports
+
+
+class IconTreeWidget(Gtk.TreeView):
+    """docstring for IconTreeWidget"""
+
+    def __init__(self):
+        super(IconTreeWidget, self).__init__()
+
+        self._store = None
+
+        self._setup_styling()
+        self._setup_signals()
+        self._set_up_dnd()
+        self._load_widgets()
+
+        self.show_all()
+
+    def get_store(self):
+        return self._store
+
+    def _setup_styling(self):
+        self.set_search_column(1)
+        self.set_rubber_banding(True)
+        self.set_headers_visible(False)
+        self.set_enable_tree_lines(False)
+
+    def _setup_signals(self):
+        ...
+
+    def _setup_additional_signals(self, grid_icon_single_click,
+                                        grid_icon_double_click,
+                                        grid_on_drag_set,
+                                        grid_on_drag_data_received,
+                                        grid_on_drag_motion):
+
+        self.connect("button_release_event", self.grid_icon_single_click)
+        self.connect("row-activated",        self.grid_icon_double_click)
+        self.connect("drag-data-get",        self.grid_on_drag_set)
+        self.connect("drag-data-received",   self.grid_on_drag_data_received)
+        self.connect("drag-motion",          self.grid_on_drag_motion)
+
+    def _load_widgets(self):
+        self._store = Gtk.TreeStore(GdkPixbuf.Pixbuf or GdkPixbuf.PixbufAnimation or None, str or None)
+        column = Gtk.TreeViewColumn("Icons")
+        icon   = Gtk.CellRendererPixbuf()
+        name   = Gtk.CellRendererText()
+        selec  = self.get_selection()
+
+        self.set_model(store)
+        selec.set_mode(3)
+
+        column.pack_start(icon, False)
+        column.pack_start(name, True)
+        column.add_attribute(icon, "pixbuf", 0)
+        column.add_attribute(name, "text", 1)
+        column.set_expand(False)
+        column.set_sizing(2)
+        column.set_min_width(120)
+        column.set_max_width(74)
+
+        self.append_column(column)
+
+
+    def _set_up_dnd(self):
+        URI_TARGET_TYPE  = 80
+        uri_target       = Gtk.TargetEntry.new('text/uri-list', Gtk.TargetFlags(0), URI_TARGET_TYPE)
+        targets          = [ uri_target ]
+        action           = Gdk.DragAction.COPY
+        self.enable_model_drag_dest(targets, action)
+        self.enable_model_drag_source(0, targets, action)

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/io_widget.py

@@ -0,0 +1,78 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, Gio
+
+# Application imports
+
+
+class IOWidget(Gtk.Box):
+    """docstring for IOWidget"""
+
+    def __init__(self, action, file):
+        super(IOWidget, self).__init__()
+        self._action    = action
+        self._file      = file
+        self._basename  = self._file.get_basename()
+
+        self.cancle_eve = Gio.Cancellable.new()
+        self.progress   = None
+
+        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):
+        stats         = Gtk.Box()
+        label         = Gtk.Label()
+        cncl_button   = Gtk.Button(label="Cancel")
+        del_button    = Gtk.Button(label="Clear")
+        self.progress = Gtk.ProgressBar()
+
+        label.set_label(self._basename)
+        self.progress.set_show_text(True)
+        self.progress.set_text(f"{self._action.upper()}ING")
+        stats.set_orientation(0)
+
+        stats.pack_end(del_button, False, False, 5)
+        del_button.connect("clicked", self.delete_self, ())
+
+        if not self._action in ("create", "rename"):
+            stats.pack_end(cncl_button, False, False, 5)
+            cncl_button.connect("clicked", self.do_cancel, *(self, self.cancle_eve))
+
+        stats.add(self.progress)
+        self.add(label)
+        self.add(stats)
+
+    def do_cancel(self, widget, container, eve):
+        print(f"Canceling: [{self._action}] of {self._basename} ...")
+        eve.cancel()
+
+    def update_progress(self, current, total, eve=None):
+        self.progress.set_fraction(current/total)
+
+    def finish_callback(self, file, task=None, eve=None):
+        if self._action == "move" and self._action == "rename":
+            status = self._file.move_finish(task)
+        if self._action == "copy":
+            status = self._file.copy_finish(task)
+
+        if status:
+            self.delete_self()
+        else:
+            print(f"{self._action} of {self._basename} failed...")
+
+    def delete_self(self, widget=None, eve=None):
+        self.get_parent().remove(self)

src/versions/solarfm-0.0.1/SolarFM/solarfm/widgets/tab_header.py

@@ -0,0 +1,48 @@
+# Python imports
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, Gio
+
+# Application imports
+
+
+class TabHeader(Gtk.ButtonBox):
+    """docstring for TabHeader"""
+
+    def __init__(self, tab, close_tab):
+        super(TabHeader, self).__init__()
+        self._tab       = tab
+        self._close_tab = close_tab # NOTE: Close method in tab_mixin
+
+        self._setup_styling()
+        self._setup_signals()
+        self._load_widgets()
+
+    def _setup_styling(self):
+        self.set_orientation(0)
+
+    def _setup_signals(self):
+        ...
+
+    def _load_widgets(self):
+        label = Gtk.Label()
+        tid   = Gtk.Label()
+        close = Gtk.Button()
+        icon  = Gtk.Image(stock=Gtk.STOCK_CLOSE)
+
+        label.set_label(f"{self._tab.get_end_of_path()}")
+        label.set_width_chars(len(self._tab.get_end_of_path()))
+        label.set_xalign(0.0)
+        tid.set_label(f"{self._tab.get_id()}")
+
+        close.connect("released", self._close_tab)
+
+        close.add(icon)
+        self.add(label)
+        self.add(close)
+        self.add(tid)
+
+        self.show_all()
+        tid.hide()

user_config/usr/share/solarfm/Main_Window.glade

@@ -828,22 +828,6 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                 <property name="can-focus">False</property>
                 <property name="spacing">5</property>
                 <property name="layout-style">start</property>
-                <child>
-                  <object class="GtkButton" id="io_button">
-                    <property name="label" translatable="yes">I/O</property>
-                    <property name="visible">True</property>
-                    <property name="can-focus">True</property>
-                    <property name="receives-default">True</property>
-                    <property name="image">io_img</property>
-                    <property name="always-show-image">True</property>
-                    <signal name="released" handler="show_io_popup" swapped="no"/>
-                  </object>
-                  <packing>
-                    <property name="expand">True</property>
-                    <property name="fill">True</property>
-                    <property name="position">0</property>
-                  </packing>
-                </child>
                 <child>
                   <object class="GtkButton" id="plugins_button">
                     <property name="label" translatable="yes">Plugins</property>
@@ -855,7 +839,7 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>
-                    <property name="position">1</property>
+                    <property name="position">0</property>
                   </packing>
                 </child>
                 <child>
@@ -871,7 +855,7 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>
-                    <property name="position">2</property>
+                    <property name="position">1</property>
                   </packing>
                 </child>
                 <child>
@@ -887,7 +871,7 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>
-                    <property name="position">3</property>
+                    <property name="position">2</property>
                   </packing>
                 </child>
                 <child>
@@ -903,7 +887,7 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>
-                    <property name="position">4</property>
+                    <property name="position">3</property>
                   </packing>
                 </child>
                 <child>
@@ -916,6 +900,22 @@ SolarFM is developed on Atom, git, and using Python 3+ with Gtk GObject introspe
                     <property name="always-show-image">True</property>
                     <signal name="released" handler="toggle_notebook_pane" swapped="no"/>
                   </object>
+                  <packing>
+                    <property name="expand">True</property>
+                    <property name="fill">True</property>
+                    <property name="position">4</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkButton" id="io_button">
+                    <property name="label" translatable="yes">I/O</property>
+                    <property name="visible">True</property>
+                    <property name="can-focus">True</property>
+                    <property name="receives-default">True</property>
+                    <property name="image">io_img</property>
+                    <property name="always-show-image">True</property>
+                    <signal name="released" handler="show_io_popup" swapped="no"/>
+                  </object>
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>