virt-manager/virtManager/console.py

# Copyright (C) 2006-2008, 2015 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>
# Copyright (C) 2010 Marc-Andre Lureau <marcandre.lureau@redhat.com>
#
# This work is licensed under the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.

import logging

from gi.repository import Gtk
from gi.repository import Gdk

from .baseclass import vmmGObject, vmmGObjectUI
from .serialcon import vmmSerialConsole
from .sshtunnels import ConnectionInfo
from .viewers import SpiceViewer, VNCViewer, have_spice_gtk
from .vmwindow import DETAILS_PAGE_CONSOLE


# console-pages IDs
(_CONSOLE_PAGE_UNAVAILABLE,
 _CONSOLE_PAGE_AUTHENTICATE,
 _CONSOLE_PAGE_SERIAL,
 _CONSOLE_PAGE_VIEWER) = range(4)


class _TimedRevealer(vmmGObject):
    """
    Revealer for the fullscreen toolbar, with a bit of extra logic to
    hide/show based on mouse over
    """
    def __init__(self, toolbar):
        vmmGObject.__init__(self)

        self._in_fullscreen = False
        self._timeout_id = None

        self._revealer = Gtk.Revealer()
        self._revealer.add(toolbar)

        # Adding the revealer to the eventbox seems to ensure the
        # eventbox always has 1 invisible pixel showing at the top of the
        # screen, which we can use to grab the pointer event to show
        # the hidden toolbar.

        self._ebox = Gtk.EventBox()
        self._ebox.add(self._revealer)
        self._ebox.set_halign(Gtk.Align.CENTER)
        self._ebox.set_valign(Gtk.Align.START)
        self._ebox.show_all()

        self._ebox.connect("enter-notify-event", self._enter_notify)
        self._ebox.connect("leave-notify-event", self._enter_notify)

    def _cleanup(self):
        self._ebox.destroy()
        self._ebox = None
        self._revealer.destroy()
        self._revealer = None
        self._timeout_id = None

    def _enter_notify(self, ignore1, ignore2):
        x, y = self._ebox.get_pointer()
        alloc = self._ebox.get_allocation()
        entered = bool(x >= 0 and y >= 0 and
                       x < alloc.width and y < alloc.height)

        if not self._in_fullscreen:
            return

        # Pointer exited the toolbar, and toolbar is revealed. Schedule
        # a timeout to close it, if one isn't already scheduled
        if not entered and self._revealer.get_reveal_child():
            self._schedule_unreveal_timeout(1000)
            return

        self._unregister_timeout()
        if entered and not self._revealer.get_reveal_child():
            self._revealer.set_reveal_child(True)

    def _schedule_unreveal_timeout(self, timeout):
        if self._timeout_id:
            return

        def cb():
            self._revealer.set_reveal_child(False)
            self._timeout_id = None
        self._timeout_id = self.timeout_add(timeout, cb)

    def _unregister_timeout(self):
        if self._timeout_id:
            self.remove_gobject_timeout(self._timeout_id)
            self._timeout_id = None

    def force_reveal(self, val):
        self._unregister_timeout()
        self._in_fullscreen = val
        self._revealer.set_reveal_child(val)
        self._schedule_unreveal_timeout(2000)

    def get_overlay_widget(self):
        return self._ebox


def build_keycombo_menu(on_send_key_fn):
    menu = Gtk.Menu()

    def make_item(name, combo):
        item = Gtk.MenuItem.new_with_mnemonic(name)
        item.connect("activate", on_send_key_fn, combo)

        menu.add(item)

    make_item("Ctrl+Alt+_Backspace", ["Control_L", "Alt_L", "BackSpace"])
    make_item("Ctrl+Alt+_Delete", ["Control_L", "Alt_L", "Delete"])
    menu.add(Gtk.SeparatorMenuItem())

    for i in range(1, 13):
        make_item("Ctrl+Alt+F_%d" % i, ["Control_L", "Alt_L", "F%d" % i])
    menu.add(Gtk.SeparatorMenuItem())

    make_item("_Printscreen", ["Print"])

    menu.show_all()
    return menu


class vmmOverlayToolbar:
    def __init__(self, on_leave_fn, on_send_key_fn):
        self._send_key_button = None
        self._keycombo_menu = None
        self._toolbar = None

        self.timed_revealer = None
        self._init_ui(on_leave_fn, on_send_key_fn)

    def _init_ui(self, on_leave_fn, on_send_key_fn):
        self._keycombo_menu = build_keycombo_menu(on_send_key_fn)

        self._toolbar = Gtk.Toolbar()
        self._toolbar.set_show_arrow(False)
        self._toolbar.set_style(Gtk.ToolbarStyle.BOTH_HORIZ)
        self._toolbar.get_accessible().set_name("Fullscreen Toolbar")

        # Exit button
        button = Gtk.ToolButton.new_from_stock(Gtk.STOCK_LEAVE_FULLSCREEN)
        button.set_tooltip_text(_("Leave fullscreen"))
        button.show()
        button.get_accessible().set_name("Fullscreen Exit")
        self._toolbar.add(button)
        button.connect("clicked", on_leave_fn)

        self._send_key_button = Gtk.ToolButton()
        self._send_key_button.set_icon_name(
                                "preferences-desktop-keyboard-shortcuts")
        self._send_key_button.set_tooltip_text(_("Send key combination"))
        self._send_key_button.show_all()
        self._send_key_button.connect("clicked",
                self._on_send_key_button_clicked_cb)
        self._send_key_button.get_accessible().set_name("Fullscreen Send Key")
        self._toolbar.add(self._send_key_button)

        self.timed_revealer = _TimedRevealer(self._toolbar)

    def _on_send_key_button_clicked_cb(self, src):
        event = Gtk.get_current_event()
        win = self._toolbar.get_window()
        rect = Gdk.Rectangle()

        rect.y = win.get_height()
        self._keycombo_menu.popup_at_rect(win, rect,
                Gdk.Gravity.NORTH_WEST, Gdk.Gravity.NORTH_WEST, event)

    def cleanup(self):
        self._keycombo_menu.destroy()
        self._keycombo_menu = None
        self._toolbar.destroy()
        self._toolbar = None
        self.timed_revealer.cleanup()
        self.timed_revealer = None

    def set_sensitive(self, can_sendkey):
        self._send_key_button.set_sensitive(can_sendkey)


class vmmConsolePages(vmmGObjectUI):
    """
    Handles all the complex UI handling dictated by the spice/vnc widgets
    """
    def __init__(self, vm, builder, topwin):
        vmmGObjectUI.__init__(self, None, None, builder=builder, topwin=topwin)

        self.vm = vm
        self._pointer_is_grabbed = False
        self._change_title()
        self.vm.connect("state-changed", self._change_title)

        # State for disabling modifiers when keyboard is grabbed
        self._accel_groups = Gtk.accel_groups_from_object(self.topwin)
        self._gtk_settings_accel = None
        self._gtk_settings_mnemonic = None

        # Initialize display widget
        self._viewer = None

        # Fullscreen toolbar
        self._keycombo_menu = build_keycombo_menu(self._do_send_key)

        self._overlay_toolbar_fullscreen = vmmOverlayToolbar(
            on_leave_fn=self._leave_fullscreen,
            on_send_key_fn=self._do_send_key)
        self.widget("console-overlay").add_overlay(
                self._overlay_toolbar_fullscreen.timed_revealer.get_overlay_widget())

        # Make viewer widget background always be black
        black = Gdk.Color(0, 0, 0)
        self.widget("console-gfx-viewport").modify_bg(Gtk.StateType.NORMAL,
                                                      black)

        self.widget("console-pages").set_show_tabs(False)
        self.widget("serial-pages").set_show_tabs(False)

        self._serial_consoles = []
        self._init_menus()

        # Signals are added by vmmVMWindow. Don't use connect_signals here
        # or it changes will be overwritten

        self.widget("console-gfx-scroll").connect("size-allocate",
            self._scroll_size_allocate)

        self._refresh_widget_states()
        self._refresh_scaling_from_settings()

        self.add_gsettings_handle(
            self.vm.on_console_scaling_changed(
                self._refresh_scaling_from_settings))
        self._refresh_resizeguest_from_settings()
        self.add_gsettings_handle(
            self.vm.on_console_resizeguest_changed(
                self._refresh_resizeguest_from_settings))
        self.add_gsettings_handle(
            self.config.on_console_accels_changed(self._refresh_enable_accel))


    def _cleanup(self):
        self.vm = None

        if self._viewer:
            self._viewer.cleanup()
        self._viewer = None

        self._overlay_toolbar_fullscreen.cleanup()

        for serial in self._serial_consoles:
            serial.cleanup()
        self._serial_consoles = []


    ##########################
    # Initialization helpers #
    ##########################


    def _init_menus(self):
        # Serial list menu
        smenu = Gtk.Menu()
        smenu.connect("show", self._populate_serial_menu)
        self.widget("details-menu-view-serial-list").set_submenu(smenu)

        # Keycombo menu (ctrl+alt+del etc.)
        self.widget("details-menu-send-key").set_submenu(self._keycombo_menu)


    #################
    # Internal APIs #
    #################

    def _change_title(self, ignore1=None):
        title = (_("%(vm-name)s on %(connection-name)s") % {
            "vm-name": self.vm.get_name_or_title(),
            "connection-name": self.vm.conn.get_pretty_desc(),
        })

        if self._pointer_is_grabbed and self._viewer:
            keystr = self._viewer.console_get_grab_keys()
            keymsg = _("Press %s to release pointer.") % keystr

            title = keymsg + " " + title

        self.topwin.set_title(title)

    def _someone_has_focus(self):
        if (self._viewer and
            self._viewer.console_has_focus() and
            self._viewer.console_is_open()):
            return True

        for serial in self._serial_consoles:
            if (serial.terminal and
                serial.terminal.get_property("has-focus")):
                return True

    def _disable_modifiers(self):
        if self._gtk_settings_accel is not None:
            return

        for g in self._accel_groups:
            self.topwin.remove_accel_group(g)

        settings = Gtk.Settings.get_default()
        self._gtk_settings_accel = settings.get_property('gtk-menu-bar-accel')
        settings.set_property('gtk-menu-bar-accel', None)

        self._gtk_settings_mnemonic = settings.get_property(
            "gtk-enable-mnemonics")
        settings.set_property("gtk-enable-mnemonics", False)

    def _enable_modifiers(self):
        if self._gtk_settings_accel is None:
            return

        settings = Gtk.Settings.get_default()
        settings.set_property('gtk-menu-bar-accel', self._gtk_settings_accel)
        self._gtk_settings_accel = None

        if self._gtk_settings_mnemonic is not None:
            settings.set_property("gtk-enable-mnemonics",
                                  self._gtk_settings_mnemonic)

        for g in self._accel_groups:
            self.topwin.add_accel_group(g)

    def _refresh_enable_accel(self):
        # Make sure modifiers are up to date
        self._viewer_focus_changed()

    def _do_send_key(self, src, keys):
        ignore = src

        if keys is not None:
            self._viewer.console_send_keys(keys)


    ###########################
    # Resize and scaling APIs #
    ###########################

    def _scroll_size_allocate(self, src_ignore, req):
        if not self._viewer:
            return
        if not self._viewer.console_get_desktop_resolution():
            return

        scroll = self.widget("console-gfx-scroll")
        is_scale = self._viewer.console_get_scaling()
        is_resizeguest = self._viewer.console_get_resizeguest()

        dx = 0
        dy = 0
        align_ratio = float(req.width) / float(req.height)

        # pylint: disable=unpacking-non-sequence
        desktop_w, desktop_h = self._viewer.console_get_desktop_resolution()
        desktop_ratio = float(desktop_w) / float(desktop_h)

        if is_scale:
            # Make sure we never show scrollbars when scaling
            scroll.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.NEVER)
        else:
            scroll.set_policy(Gtk.PolicyType.AUTOMATIC,
                              Gtk.PolicyType.AUTOMATIC)

        if is_resizeguest:
            # With resize guest, we don't want to maintain aspect ratio,
            # since the guest can resize to arbitrary resolutions.
            self._viewer.console_set_size_request(req.width, req.height)
            return

        if not is_scale:
            # Scaling disabled is easy, just force the VNC widget size. Since
            # we are inside a scrollwindow, it shouldn't cause issues.
            self._viewer.console_set_size_request(desktop_w, desktop_h)
            return

        # Make sure there is no hard size requirement so we can scale down
        self._viewer.console_set_size_request(-1, -1)

        # Make sure desktop aspect ratio is maintained
        if align_ratio > desktop_ratio:
            desktop_w = int(req.height * desktop_ratio)
            desktop_h = req.height
            dx = (req.width - desktop_w) // 2

        else:
            desktop_w = req.width
            desktop_h = int(req.width // desktop_ratio)
            dy = (req.height - desktop_h) // 2

        viewer_alloc = Gdk.Rectangle()
        viewer_alloc.x = dx
        viewer_alloc.y = dy
        viewer_alloc.width = desktop_w
        viewer_alloc.height = desktop_h
        self._viewer.console_size_allocate(viewer_alloc)

    def _refresh_resizeguest_from_settings(self):
        tooltip = ""
        if self._viewer:
            if self._viewer.viewer_type != "spice":
                tooltip = (
                    _("Graphics type '%s' does not support auto resize.") %
                    self._viewer.viewer_type)
            elif not self._viewer.console_has_agent():
                tooltip = _("Guest agent is not available.")

        val = self.vm.get_console_resizeguest()
        widget = self.widget("details-menu-view-resizeguest")
        widget.set_tooltip_text(tooltip)
        widget.set_sensitive(not bool(tooltip))
        if not tooltip:
            self.widget("details-menu-view-resizeguest").set_active(bool(val))

        self._sync_resizeguest_with_display()

    def _sync_resizeguest_with_display(self):
        if not self._viewer:
            return

        val = bool(self.vm.get_console_resizeguest())
        self._viewer.console_set_resizeguest(val)
        self.widget("console-gfx-scroll").queue_resize()

    def _resizeguest_ui_changed_cb(self, src):
        if not src.get_sensitive():
            return

        val = int(self.widget("details-menu-view-resizeguest").get_active())
        self.vm.set_console_resizeguest(val)
        self._sync_resizeguest_with_display()

    def _do_size_to_vm(self, src_ignore):
        # Resize the console to best fit the VM resolution
        if not self._viewer:
            return
        if not self._viewer.console_get_desktop_resolution():
            return

        top_w, top_h = self.topwin.get_size()
        viewer_alloc = self.widget("console-gfx-scroll").get_allocation()
        desktop_w, desktop_h = self._viewer.console_get_desktop_resolution()

        self.topwin.unmaximize()
        self.topwin.resize(
            desktop_w + (top_w - viewer_alloc.width),
            desktop_h + (top_h - viewer_alloc.height))


    ################
    # Scaling APIs #
    ################

    def _refresh_scaling_from_settings(self):
        scale_type = self.vm.get_console_scaling()
        self.widget("details-menu-view-scale-always").set_active(
            scale_type == self.config.CONSOLE_SCALE_ALWAYS)
        self.widget("details-menu-view-scale-never").set_active(
            scale_type == self.config.CONSOLE_SCALE_NEVER)
        self.widget("details-menu-view-scale-fullscreen").set_active(
            scale_type == self.config.CONSOLE_SCALE_FULLSCREEN)

        self._sync_scaling_with_display()

    def _scaling_ui_changed_cb(self, src):
        # Called from details.py
        if not src.get_active():
            return

        scale_type = 0
        if src == self.widget("details-menu-view-scale-always"):
            scale_type = self.config.CONSOLE_SCALE_ALWAYS
        elif src == self.widget("details-menu-view-scale-fullscreen"):
            scale_type = self.config.CONSOLE_SCALE_FULLSCREEN
        elif src == self.widget("details-menu-view-scale-never"):
            scale_type = self.config.CONSOLE_SCALE_NEVER

        self.vm.set_console_scaling(scale_type)
        self._sync_scaling_with_display()

    def _sync_scaling_with_display(self):
        if not self._viewer:
            return

        curscale = self._viewer.console_get_scaling()
        fs = self.widget("control-fullscreen").get_active()
        scale_type = self.vm.get_console_scaling()

        if (scale_type == self.config.CONSOLE_SCALE_NEVER and
            curscale is True):
            self._viewer.console_set_scaling(False)
        elif (scale_type == self.config.CONSOLE_SCALE_ALWAYS and
              curscale is False):
            self._viewer.console_set_scaling(True)
        elif (scale_type == self.config.CONSOLE_SCALE_FULLSCREEN and
              curscale != fs):
            self._viewer.console_set_scaling(fs)

        # Refresh viewer size
        self.widget("console-gfx-scroll").queue_resize()


    ###################
    # Fullscreen APIs #
    ###################

    def _refresh_can_fullscreen(self):
        cpage = self.widget("console-pages").get_current_page()
        dpage = self.widget("details-pages").get_current_page()

        allow_fullscreen = bool(dpage == DETAILS_PAGE_CONSOLE and
            cpage == _CONSOLE_PAGE_VIEWER and
            self._viewer and self._viewer.console_is_open())

        self.widget("control-fullscreen").set_sensitive(allow_fullscreen)
        self.widget("details-menu-view-fullscreen").set_sensitive(
            allow_fullscreen)

    def _leave_fullscreen(self, ignore=None):
        self._change_fullscreen(False)

    def _change_fullscreen(self, do_fullscreen):
        self.widget("control-fullscreen").set_active(do_fullscreen)

        if do_fullscreen:
            self.topwin.fullscreen()
            self._overlay_toolbar_fullscreen.timed_revealer.force_reveal(True)
            self.widget("toolbar-box").hide()
            self.widget("details-menubar").hide()
        else:
            self._overlay_toolbar_fullscreen.timed_revealer.force_reveal(False)
            self.topwin.unfullscreen()

            if self.widget("details-menu-view-toolbar").get_active():
                self.widget("toolbar-box").show()
            self.widget("details-menubar").show()

        self._sync_scaling_with_display()


    ##########################
    # State tracking methods #
    ##########################

    def _show_vm_status_unavailable(self):
        if self.vm.is_crashed():
            self._activate_unavailable_page(_("Guest has crashed."))
        else:
            self._activate_unavailable_page(_("Guest is not running."))

    def _close_viewer(self):
        if self._viewer is None:
            return

        self._viewer.console_remove_display_from_widget(
            self.widget("console-gfx-viewport"))
        self._viewer.cleanup()
        self._viewer = None

        self._leave_fullscreen()

        for serial in self._serial_consoles:
            serial.close()

    def _update_vm_widget_states(self):
        page = self.widget("console-pages").get_current_page()

        if self.vm.is_runable():
            self._show_vm_status_unavailable()

        elif (page == _CONSOLE_PAGE_UNAVAILABLE or
              page == _CONSOLE_PAGE_VIEWER):
            if self._viewer and self._viewer.console_is_open():
                self._activate_viewer_page()
            else:
                self._init_viewer()

        # Update other state
        self._refresh_widget_states()


    ###################
    # Page Navigation #
    ###################

    def _activate_unavailable_page(self, msg):
        """
        This function is passed to serialcon.py at least, so change
        with care
        """
        self._close_viewer()
        self.widget("console-pages").set_current_page(
            _CONSOLE_PAGE_UNAVAILABLE)
        if msg:
            self.widget("console-unavailable").set_label("<b>" + msg + "</b>")

    def _activate_auth_page(self, withPassword, withUsername):
        (pw, username) = self.config.get_console_password(self.vm)

        self.widget("console-auth-password").set_visible(withPassword)
        self.widget("label-auth-password").set_visible(withPassword)

        self.widget("console-auth-username").set_visible(withUsername)
        self.widget("label-auth-username").set_visible(withUsername)

        self.widget("console-auth-username").set_text(username)
        self.widget("console-auth-password").set_text(pw)

        self.widget("console-auth-remember").set_sensitive(
                bool(self.config.has_keyring()))
        if self.config.has_keyring():
            self.widget("console-auth-remember").set_active(
                    bool(withPassword and pw) or (withUsername and username))

        self.widget("console-pages").set_current_page(
            _CONSOLE_PAGE_AUTHENTICATE)

        if withUsername:
            self.widget("console-auth-username").grab_focus()
        else:
            self.widget("console-auth-password").grab_focus()

    def _activate_viewer_page(self):
        self.widget("console-pages").set_current_page(_CONSOLE_PAGE_VIEWER)
        if self._viewer:
            self._viewer.console_grab_focus()

    def _page_changed(self, src, origpage, newpage):
        ignore = src
        ignore = origpage

        # Hide the contents of all other pages, so they don't screw
        # up window sizing
        for i in range(self.widget("console-pages").get_n_pages()):
            self.widget("console-pages").get_nth_page(i).set_visible(
                i == newpage)

        # Dispatch the next bit in idle_add, so the UI size can change
        self.idle_add(self._refresh_widget_states)

    def _refresh_widget_states(self):
        if not self.vm:
            # This is triggered via cleanup + idle_add, so vm might
            # disappear and spam the logs
            return

        pagenum = self.widget("console-pages").get_current_page()
        paused = self.vm.is_paused()
        is_viewer = bool(pagenum == _CONSOLE_PAGE_VIEWER and
            self._viewer and self._viewer.console_is_open())

        self.widget("details-menu-vm-screenshot").set_sensitive(is_viewer)
        self.widget("details-menu-usb-redirection").set_sensitive(
            bool(is_viewer and self._viewer and
            self._viewer.console_has_usb_redirection() and
            self.vm.has_spicevmc_type_redirdev()))

        can_sendkey = (is_viewer and not paused)
        for c in self._keycombo_menu.get_children():
            c.set_sensitive(can_sendkey)
        self._overlay_toolbar_fullscreen.set_sensitive(can_sendkey)

        self._refresh_can_fullscreen()


    #########################
    # Viewer login attempts #
    #########################

    def _init_viewer(self):
        if self._viewer or not self.is_visible():
            # Don't try and login for these cases
            return

        ginfo = None
        try:
            gdevs = self.vm.xmlobj.devices.graphics
            gdev = gdevs and gdevs[0] or None
            if gdev:
                ginfo = ConnectionInfo(self.vm.conn, gdev)
        except Exception as e:
            # We can fail here if VM is destroyed: xen is a bit racy
            # and can't handle domain lookups that soon after
            logging.exception("Getting graphics console failed: %s", str(e))
            return

        if ginfo is None:
            logging.debug("No graphics configured for guest")
            self._activate_unavailable_page(
                _("Graphical console not configured for guest"))
            return

        if ginfo.gtype not in self.config.embeddable_graphics():
            logging.debug("Don't know how to show graphics type '%s' "
                          "disabling console page", ginfo.gtype)

            msg = (_("Cannot display graphical console type '%s'")
                     % ginfo.gtype)

            self._activate_unavailable_page(msg)
            return

        self._activate_unavailable_page(
            _("Connecting to graphical console for guest"))

        logging.debug("Starting connect process for %s", ginfo.logstring())
        try:
            if ginfo.gtype == "vnc":
                viewer_class = VNCViewer
            elif ginfo.gtype == "spice":
                if have_spice_gtk:
                    viewer_class = SpiceViewer
                else:
                    raise RuntimeError("Error opening Spice console, "
                                       "SpiceClientGtk missing")


            self._viewer = viewer_class(self.vm, ginfo)
            self._connect_viewer_signals()

            self._refresh_enable_accel()

            self._viewer.console_open()
        except Exception as e:
            logging.exception("Error connection to graphical console")
            self._activate_unavailable_page(
                    _("Error connecting to graphical console") + ":\n%s" % e)

    def _set_credentials(self, src_ignore=None):
        passwd = self.widget("console-auth-password")
        username = self.widget("console-auth-username")

        if passwd.get_visible():
            self._viewer.console_set_password(passwd.get_text())
        if username.get_visible():
            self._viewer.console_set_username(username.get_text())

        if self.widget("console-auth-remember").get_active():
            self.config.set_console_password(self.vm, passwd.get_text(),
                                             username.get_text())
        else:
            self.config.del_console_password(self.vm)


    ##########################
    # Viewer signal handling #
    ##########################

    def _viewer_add_display(self, ignore, display):
        self.widget("console-gfx-viewport").add(display)

        # Sync initial settings
        self._sync_scaling_with_display()
        self._refresh_resizeguest_from_settings()

    def _pointer_grabbed(self, ignore):
        self._pointer_is_grabbed = True
        self._change_title()

    def _pointer_ungrabbed(self, ignore):
        self._pointer_is_grabbed = False
        self._change_title()

    def _viewer_allocate_cb(self, src, ignore):
        self.widget("console-gfx-scroll").queue_resize()

    def _viewer_focus_changed(self, ignore1=None, ignore2=None):
        force_accel = self.config.get_console_accels()

        if force_accel:
            self._enable_modifiers()
        elif self._someone_has_focus():
            self._disable_modifiers()
        else:
            self._enable_modifiers()

    def _viewer_auth_rejected(self, ignore, errmsg):
        self._activate_unavailable_page(errmsg)

    def _viewer_auth_error(self, ignore, errmsg, viewer_will_disconnect):
        errmsg = _("Viewer authentication error: %s") % errmsg
        self.err.val_err(errmsg)

        if viewer_will_disconnect:
            # GtkVNC will disconnect after an auth error, so lets do it for
            # them and re-init the viewer (which will be triggered by
            # update_vm_widget_states if needed)
            self._activate_unavailable_page(errmsg)

        self._update_vm_widget_states()

    def _viewer_need_auth(self, ignore, withPassword, withUsername):
        self._activate_auth_page(withPassword, withUsername)

    def _viewer_agent_connected(self, ignore):
        self._refresh_resizeguest_from_settings()

    def _viewer_usb_redirect_error(self, ignore, errstr):
        self.err.show_err(_("USB redirection error"),
            text2=str(errstr), modal=True)

    def _viewer_disconnected_set_page(self, errdetails, ssherr):
        if self.vm.is_runable():
            # Exit was probably for legitimate reasons
            self._show_vm_status_unavailable()
            return

        msg = _("Viewer was disconnected.")
        if errdetails:
            msg += "\n" + errdetails
        if ssherr:
            logging.debug("SSH tunnel error output: %s", ssherr)
            msg += "\n\n"
            msg += _("SSH tunnel error output: %s") % ssherr

        self._activate_unavailable_page(msg)

    def _viewer_disconnected(self, ignore, errdetails, ssherr):
        self._activate_unavailable_page(_("Viewer disconnected."))
        logging.debug("Viewer disconnected")

        # Make sure modifiers are set correctly
        self._viewer_focus_changed()

        self._viewer_disconnected_set_page(errdetails, ssherr)
        self._refresh_resizeguest_from_settings()

    def _viewer_connected(self, ignore):
        logging.debug("Viewer connected")
        self._activate_viewer_page()

        # Make sure modifiers are set correctly
        self._viewer_focus_changed()

    def _connect_viewer_signals(self):
        self._viewer.connect("add-display-widget", self._viewer_add_display)
        self._viewer.connect("pointer-grab", self._pointer_grabbed)
        self._viewer.connect("pointer-ungrab", self._pointer_ungrabbed)
        self._viewer.connect("size-allocate", self._viewer_allocate_cb)
        self._viewer.connect("focus-in-event", self._viewer_focus_changed)
        self._viewer.connect("focus-out-event", self._viewer_focus_changed)
        self._viewer.connect("connected", self._viewer_connected)
        self._viewer.connect("disconnected", self._viewer_disconnected)
        self._viewer.connect("auth-error", self._viewer_auth_error)
        self._viewer.connect("auth-rejected", self._viewer_auth_rejected)
        self._viewer.connect("need-auth", self._viewer_need_auth)
        self._viewer.connect("agent-connected", self._viewer_agent_connected)
        self._viewer.connect("usb-redirect-error",
            self._viewer_usb_redirect_error)


    ###########################
    # Serial console handling #
    ###########################

    def _activate_default_console_page(self):
        """
        Find the default graphical or serial console for the VM
        """
        if (self.vm.xmlobj.devices.graphics or
            not self.vm.get_serialcon_devices()):
            return

        # We iterate through the 'console' menu and activate the first
        # valid entry... it's the easiest thing to do to hit all the right
        # code paths.
        self._populate_serial_menu()
        menu = self.widget("details-menu-view-serial-list").get_submenu()
        for child in menu.get_children():
            if isinstance(child, Gtk.SeparatorMenuItem):
                break
            if child.get_sensitive():
                child.toggled()
                break

    def _console_menu_toggled(self, src, dev):
        self.widget("details-pages").set_current_page(DETAILS_PAGE_CONSOLE)

        if dev.DEVICE_TYPE == "graphics":
            self.widget("console-pages").set_current_page(_CONSOLE_PAGE_VIEWER)
            return

        target_port = dev.get_xml_idx()
        serial = None
        name = src.get_label()
        for s in self._serial_consoles:
            if s.name == name:
                serial = s
                break

        if not serial:
            serial = vmmSerialConsole(self.vm, target_port, name)
            serial.terminal.connect("focus-in-event",
                                    self._viewer_focus_changed)
            serial.terminal.connect("focus-out-event",
                                    self._viewer_focus_changed)

            title = Gtk.Label(label=name)
            self.widget("serial-pages").append_page(serial.box, title)
            self._serial_consoles.append(serial)

        serial.open_console()
        page_idx = self._serial_consoles.index(serial)
        self.widget("console-pages").set_current_page(_CONSOLE_PAGE_SERIAL)
        self.widget("serial-pages").set_current_page(page_idx)

    def _build_serial_menu_items(self, menu_item_cb):
        devs = self.vm.get_serialcon_devices()
        if len(devs) == 0:
            menu_item_cb(_("No text console available"),
                         radio=False, sensitive=False)
            return

        active_label = None
        if (self.widget("console-pages").get_current_page() ==
                _CONSOLE_PAGE_SERIAL):
            serial_page = self.widget("serial-pages").get_current_page()
            if len(self._serial_consoles) > serial_page:
                active_label = self._serial_consoles[serial_page].name

        for dev in devs:
            if dev.DEVICE_TYPE == "console":
                label = _("Text Console %d") % (dev.get_xml_idx() + 1)
            else:
                label = _("Serial %d") % (dev.get_xml_idx() + 1)

            tooltip = vmmSerialConsole.can_connect(self.vm, dev)
            sensitive = not bool(tooltip)

            active = (sensitive and label == active_label)
            menu_item_cb(label, sensitive=sensitive, active=active,
                tooltip=tooltip, cb=self._console_menu_toggled, cbdata=dev)

    def _build_graphical_menu_items(self, menu_item_cb):
        devs = self.vm.xmlobj.devices.graphics
        if len(devs) == 0:
            menu_item_cb(_("No graphical console available"),
                         radio=False, sensitive=False)
            return

        active = (self.widget("console-pages").get_current_page() !=
                _CONSOLE_PAGE_SERIAL)
        for idx, dev in enumerate(devs):
            label = (_("Graphical Console") + " " +
                     dev.pretty_type_simple(dev.type))

            sensitive = True
            tooltip = None
            if idx > 0:
                label += " %s" % (idx + 1)
                sensitive = False
                tooltip = _("virt-manager does not support more "
                            "that one graphical console")

            menu_item_cb(label, active=active,
                sensitive=sensitive, tooltip=tooltip,
                cb=self._console_menu_toggled, cbdata=dev)

    def _populate_serial_menu(self, ignore=None):
        src = self.widget("details-menu-view-serial-list").get_submenu()
        for child in src:
            src.remove(child)

        def menu_item_cb(label, sensitive=True, active=False,
                         radio=True, tooltip=None, cb=None, cbdata=None):
            if radio:
                item = Gtk.RadioMenuItem(menu_item_cb.radio_group)
                if menu_item_cb.radio_group is None:
                    menu_item_cb.radio_group = item
                item.set_label(label)
            else:
                item = Gtk.MenuItem.new_with_label(label)

            item.set_sensitive(sensitive)
            if active:
                item.set_active(True)
            if tooltip:
                item.set_tooltip_text(tooltip)
            if cb and sensitive:
                item.connect("toggled", cb, cbdata)
            src.add(item)
        menu_item_cb.radio_group = None

        self._build_serial_menu_items(menu_item_cb)
        src.add(Gtk.SeparatorMenuItem())
        self._build_graphical_menu_items(menu_item_cb)
        src.show_all()


    ###########################
    # API used by vmmVMWindow #
    ###########################

    def details_viewer_is_visible(self):
        return bool(self._viewer and self._viewer.console_get_visible())
    def details_viewer_has_usb_redirection(self):
        return bool(self._viewer and
            self._viewer.console_has_usb_redirection())
    def details_viewer_get_usb_widget(self):
        return self._viewer.console_get_usb_widget()
    def details_viewer_get_pixbuf(self):
        return self._viewer.console_get_pixbuf()

    def details_close_viewer(self):
        return self._activate_unavailable_page(_("Viewer disconnected."))

    def details_activate_default_console_page(self):
        return self._activate_default_console_page()

    def details_update_widget_states(self):
        return self._update_vm_widget_states()

    def details_refresh_can_fullscreen(self):
        return self._refresh_can_fullscreen()
    def details_resizeguest_ui_changed_cb(self, *args, **kwargs):
        return self._resizeguest_ui_changed_cb(*args, **kwargs)

    def details_page_changed(self, *args, **kwargs):
        return self._page_changed(*args, **kwargs)
    def details_scaling_ui_changed_cb(self, *args, **kwargs):
        return self._scaling_ui_changed_cb(*args, **kwargs)
    def details_size_to_vm(self, *args, **kwargs):
        return self._do_size_to_vm(*args, **kwargs)

    def details_toggle_fullscreen(self, src):
        do_fullscreen = src.get_active()
        self._change_fullscreen(do_fullscreen)

    def details_auth_login(self, ignore):
        self._set_credentials()