Add Option to hide Gajim on pressing close

This also adds that Gajim gets present if Gajim is launched a second time

gajim/common/config.py

@@ -237,6 +237,7 @@ class Config:
             'notification_position_y': [opt_int, -1],
             'muc_highlight_words': [opt_str, '', _('A semicolon-separated list of words that will be highlighted in group chats.')],
             'quit_on_roster_x_button': [opt_bool, False, _('If True, quits Gajim when X button of Window Manager is clicked. This setting is taken into account only if notification icon is used.')],
+            'hide_on_roster_x_button': [opt_bool, False, _('If True, Gajim hides the Roster window on pressing the X button instead of minimizing into the Dock.')],
             'show_unread_tab_icon': [opt_bool, False, _('If True, Gajim will display an icon on each tab containing unread messages. Depending on the theme, this icon may be animated.')],
             'show_status_msgs_in_roster': [opt_bool, True, _('If True, Gajim will display the status message, if not empty, for every contact under the contact name in roster window.'), True],
             'show_avatars_in_roster': [opt_bool, True, '', True],

gajim/gajim.py

@@ -224,6 +224,9 @@ class GajimApplication(Gtk.Application):
         self.set_menubar(menubar)
 
     def _activate(self, application):
+        if self.interface is not None:
+            self.interface.roster.window.present()
+            return
         from gajim.gui_interface import Interface
         from gajim import gtkgui_helpers
         self.interface = Interface()

gajim/roster_window.py

@@ -2406,6 +2406,9 @@ class RosterWindow:
                 x, y = self.window.get_position()
                 app.config.set('roster_x-position', x)
                 app.config.set('roster_y-position', y)
+            if app.config.get('hide_on_roster_x_button'):
+                self.window.hide()
+            else:
                 self.window.iconify()
         elif app.config.get('quit_on_roster_x_button'):
             self.on_quit_request()
@@ -3755,6 +3758,9 @@ class RosterWindow:
             'quit_on_roster_x_button') and ((app.interface.systray_enabled and\
             app.config.get('trayicon') == 'always') or app.config.get(
             'allow_hide_roster')):
+                if app.config.get('hide_on_roster_x_button'):
+                    self.window.hide()
+                else:
                     self.window.iconify()
         elif event.get_state() & Gdk.ModifierType.CONTROL_MASK and event.keyval == \
         Gdk.KEY_i: