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diff --git a/zenmap/zenmapGUI/ScanHostsView.py b/zenmap/zenmapGUI/ScanHostsView.py
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+++ b/zenmap/zenmapGUI/ScanHostsView.py
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+#!/usr/bin/env python3
+
+# ***********************IMPORTANT NMAP LICENSE TERMS************************
+# *
+# * The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
+# * Project"). Nmap is also a registered trademark of the Nmap Project.
+# *
+# * This program is distributed under the terms of the Nmap Public Source
+# * License (NPSL). The exact license text applying to a particular Nmap
+# * release or source code control revision is contained in the LICENSE
+# * file distributed with that version of Nmap or source code control
+# * revision. More Nmap copyright/legal information is available from
+# * https://nmap.org/book/man-legal.html, and further information on the
+# * NPSL license itself can be found at https://nmap.org/npsl/ . This
+# * header summarizes some key points from the Nmap license, but is no
+# * substitute for the actual license text.
+# *
+# * Nmap is generally free for end users to download and use themselves,
+# * including commercial use. It is available from https://nmap.org.
+# *
+# * The Nmap license generally prohibits companies from using and
+# * redistributing Nmap in commercial products, but we sell a special Nmap
+# * OEM Edition with a more permissive license and special features for
+# * this purpose. See https://nmap.org/oem/
+# *
+# * If you have received a written Nmap license agreement or contract
+# * stating terms other than these (such as an Nmap OEM license), you may
+# * choose to use and redistribute Nmap under those terms instead.
+# *
+# * The official Nmap Windows builds include the Npcap software
+# * (https://npcap.com) for packet capture and transmission. It is under
+# * separate license terms which forbid redistribution without special
+# * permission. So the official Nmap Windows builds may not be redistributed
+# * without special permission (such as an Nmap OEM license).
+# *
+# * Source is provided to this software because we believe users have a
+# * right to know exactly what a program is going to do before they run it.
+# * This also allows you to audit the software for security holes.
+# *
+# * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+# * new features. You are highly encouraged to submit your changes as a Github PR
+# * or by email to the dev@nmap.org mailing list for possible incorporation into
+# * the main distribution. Unless you specify otherwise, it is understood that
+# * you are offering us very broad rights to use your submissions as described in
+# * the Nmap Public Source License Contributor Agreement. This is important
+# * because we fund the project by selling licenses with various terms, and also
+# * because the inability to relicense code has caused devastating problems for
+# * other Free Software projects (such as KDE and NASM).
+# *
+# * The free version of Nmap is distributed in the hope that it will be
+# * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
+# * indemnification and commercial support are all available through the
+# * Npcap OEM program--see https://nmap.org/oem/
+# *
+# ***************************************************************************/
+
+import gi
+
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk
+
+from zenmapGUI.higwidgets.higboxes import HIGVBox
+from zenmapGUI.Icons import get_os_icon
+import zenmapCore.I18N  # lgtm[py/unused-import]
+
+
+def treemodel_get_addrs_for_sort(model, iter):
+    host = model.get_value(iter, 0)
+    return host.get_addrs_for_sort()
+
+
+# Used to sort hosts by address.
+def cmp_treemodel_addr(model, iter_a, iter_b, *_):
+    def cmp(a, b):
+        return (a > b) - (a < b)
+    addrs_a = treemodel_get_addrs_for_sort(model, iter_a)
+    addrs_b = treemodel_get_addrs_for_sort(model, iter_b)
+    return cmp(addrs_a, addrs_b)
+
+
+class ScanHostsView(HIGVBox):
+    HOST_MODE, SERVICE_MODE = list(range(2))
+
+    def __init__(self, scan_interface):
+        HIGVBox.__init__(self)
+
+        self._scan_interface = scan_interface
+        self._create_widgets()
+        self._connect_widgets()
+        self._pack_widgets()
+        self._set_scrolled()
+        self._set_host_list()
+        self._set_service_list()
+
+        self._pack_expand_fill(self.main_vbox)
+
+        self.mode = None
+
+        # Default mode is host mode
+        self.host_mode(self.host_mode_button)
+
+        self.host_view.show_all()
+        self.service_view.show_all()
+
+    def _create_widgets(self):
+        # Mode buttons
+        self.host_mode_button = Gtk.ToggleButton.new_with_label(_("Hosts"))
+        self.service_mode_button = Gtk.ToggleButton.new_with_label(_("Services"))
+        self.buttons_box = Gtk.Box.new(Gtk.Orientation.HORIZONTAL, 0)
+
+        # Main window vbox
+        self.main_vbox = HIGVBox()
+
+        # Host list
+        self.host_list = Gtk.ListStore.new([object, str, str])
+        self.host_list.set_sort_func(1000, cmp_treemodel_addr)
+        self.host_list.set_sort_column_id(1000, Gtk.SortType.ASCENDING)
+        self.host_view = Gtk.TreeView.new_with_model(self.host_list)
+        self.pic_column = Gtk.TreeViewColumn(title=_('OS'))
+        self.host_column = Gtk.TreeViewColumn(title=_('Host'))
+        self.os_cell = Gtk.CellRendererPixbuf()
+        self.host_cell = Gtk.CellRendererText()
+
+        # Service list
+        self.service_list = Gtk.ListStore.new([str])
+        self.service_list.set_sort_column_id(0, Gtk.SortType.ASCENDING)
+        self.service_view = Gtk.TreeView.new_with_model(self.service_list)
+        self.service_column = Gtk.TreeViewColumn(title=_('Service'))
+        self.service_cell = Gtk.CellRendererText()
+
+        self.scrolled = Gtk.ScrolledWindow()
+
+    def _pack_widgets(self):
+        self.main_vbox.set_spacing(0)
+        self.main_vbox.set_border_width(0)
+        self.main_vbox._pack_noexpand_nofill(self.buttons_box)
+        self.main_vbox._pack_expand_fill(self.scrolled)
+
+        self.host_mode_button.set_active(True)
+
+        self.buttons_box.set_border_width(5)
+        self.buttons_box.pack_start(self.host_mode_button, True, True, 0)
+        self.buttons_box.pack_start(self.service_mode_button, True, True, 0)
+
+    def _connect_widgets(self):
+        self.host_mode_button.connect("toggled", self.host_mode)
+        self.service_mode_button.connect("toggled", self.service_mode)
+
+    def host_mode(self, widget):
+        self._remove_scrolled_child()
+        if widget.get_active():
+            self.mode = self.HOST_MODE
+            self.service_mode_button.set_active(False)
+            self.scrolled.add(self.host_view)
+        else:
+            self.service_mode_button.set_active(True)
+
+    def service_mode(self, widget):
+        self._remove_scrolled_child()
+        if widget.get_active():
+            self.mode = self.SERVICE_MODE
+            self.host_mode_button.set_active(False)
+            self.scrolled.add(self.service_view)
+        else:
+            self.host_mode_button.set_active(True)
+
+    def _remove_scrolled_child(self):
+        try:
+            child = self.scrolled.get_child()
+            self.scrolled.remove(child)
+        except Exception:
+            pass
+
+    def _set_scrolled(self):
+        self.scrolled.set_border_width(5)
+        self.scrolled.set_size_request(150, -1)
+        self.scrolled.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
+
+    def _set_service_list(self):
+        self.service_view.set_enable_search(True)
+        self.service_view.set_search_column(0)
+
+        selection = self.service_view.get_selection()
+        selection.set_mode(Gtk.SelectionMode.MULTIPLE)
+        self.service_view.append_column(self.service_column)
+
+        self.service_column.set_resizable(True)
+        self.service_column.set_sort_column_id(0)
+        self.service_column.set_reorderable(True)
+        self.service_column.pack_start(self.service_cell, True)
+        self.service_column.set_attributes(self.service_cell, text=0)
+
+    def _set_host_list(self):
+        self.host_view.set_enable_search(True)
+        self.host_view.set_search_column(1)
+
+        selection = self.host_view.get_selection()
+        selection.set_mode(Gtk.SelectionMode.MULTIPLE)
+
+        self.host_view.append_column(self.pic_column)
+        self.host_view.append_column(self.host_column)
+
+        self.host_column.set_resizable(True)
+        self.pic_column.set_resizable(True)
+
+        self.host_column.set_sort_column_id(1000)
+        self.pic_column.set_sort_column_id(1)
+
+        self.host_column.set_reorderable(True)
+        self.pic_column.set_reorderable(True)
+
+        self.pic_column.pack_start(self.os_cell, True)
+        self.host_column.pack_start(self.host_cell, True)
+
+        self.pic_column.set_min_width(35)
+        self.pic_column.set_attributes(self.os_cell, stock_id=1)
+        self.host_column.set_attributes(self.host_cell, text=2)
+
+    def mass_update(self, hosts):
+        """Update the internal ListStores to reflect the hosts and services
+        passed in. Hosts that have not changed are left alone."""
+        hosts = set(hosts)
+        services = set()
+        for h in hosts:
+            services.update([s["service_name"] for s in h.services])
+
+        # Disable sorting while elements are added. See the PyGTK FAQ 13.43,
+        # "Are there tips for improving performance when adding many rows to a
+        # Treeview?"
+        sort_column_id = self.host_list.get_sort_column_id()
+        self.host_list.set_default_sort_func(lambda *args: -1)
+        self.host_list.set_sort_column_id(-1, Gtk.SortType.ASCENDING)
+        self.host_view.freeze_child_notify()
+        self.host_view.set_model(None)
+
+        it = self.host_list.get_iter_first()
+        # Remove any of our ListStore hosts that aren't in the list passed in.
+        while it:
+            host = self.host_list.get_value(it, 0)
+            if host in hosts:
+                hosts.remove(host)
+                self.host_list.set(it, 1, get_os_icon(host))
+                it = self.host_list.iter_next(it)
+            else:
+                if not self.host_list.remove(it):
+                    it = None
+        # Add any remaining hosts into our ListStore.
+        for host in hosts:
+            self.add_host(host)
+
+        # Reenable sorting.
+        if sort_column_id != (None, None):
+            self.host_list.set_sort_column_id(*sort_column_id)
+        self.host_view.set_model(self.host_list)
+        self.host_view.thaw_child_notify()
+
+        it = self.service_list.get_iter_first()
+        # Remove any of our ListStore services that aren't in the list passed
+        # in.
+        while it:
+            service_name = self.service_list.get_value(it, 0)
+            if service_name in services:
+                services.remove(service_name)
+                it = self.service_list.iter_next(it)
+            else:
+                if not self.service_list.remove(it):
+                    it = None
+        # Add any remaining services into our ListStore.
+        for service_name in services:
+            self.add_service(service_name)
+
+    def add_host(self, host):
+        self.host_list.append([host, get_os_icon(host), host.get_hostname()])
+
+    def add_service(self, service):
+        self.service_list.append([service])
+
+if __name__ == "__main__":
+    w = Gtk.Window()
+    h = ScanHostsView(None)
+    w.add(h)
+
+    w.connect("delete-event", lambda x, y: Gtk.main_quit())
+    w.show_all()
+    Gtk.main()