436 lines
16 KiB
Python
436 lines
16 KiB
Python
# Base classes for the graphical user interface.
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#
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# Copyright (C) 2011-2012 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Chris Lumens <clumens@redhat.com>
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#
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import importlib, inspect, os, sys, time
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import meh.ui.gui
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from gi.repository import Gdk
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from pyanaconda.product import distributionText, isFinal
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from pyanaconda.ui import UserInterface, common
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from pyanaconda.ui.gui.utils import enlightbox, gtk_thread_wait
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import gettext
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_ = lambda x: gettext.ldgettext("anaconda", x)
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import logging
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log = logging.getLogger("anaconda")
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__all__ = ["GraphicalUserInterface", "UIObject", "busyCursor", "unbusyCursor"]
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_screenshotIndex = 0
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class GraphicalUserInterface(UserInterface):
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"""This is the standard GTK+ interface we try to steer everything to using.
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It is suitable for use both directly and via VNC.
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"""
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def __init__(self, storage, payload, instclass):
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UserInterface.__init__(self, storage, payload, instclass)
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self._actions = []
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self._currentAction = None
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self._ui = None
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self.data = None
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# This is a hack to make sure the AnacondaWidgets library gets loaded
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# before the introspection stuff.
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import ctypes
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ctypes.CDLL("libAnacondaWidgets.so.0", ctypes.RTLD_GLOBAL)
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def setup(self, data):
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from hubs.summary import SummaryHub
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from hubs.progress import ProgressHub
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from spokes import StandaloneSpoke
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busyCursor()
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hubs = [SummaryHub, ProgressHub]
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path = os.path.join(os.path.dirname(__file__), "spokes")
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self._actions = self.getActionClasses("pyanaconda.ui.gui.spokes.%s", path, hubs, StandaloneSpoke)
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self.data = data
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def _instantiateAction(self, actionClass):
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from spokes import StandaloneSpoke
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# Instantiate an action on-demand, passing the arguments defining our
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# spoke API and setting up continue/quit signal handlers.
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obj = actionClass(self.data, self.storage, self.payload, self.instclass)
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# If we are doing a kickstart install, some standalone spokes
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# could already be filled out. In that case, we do not want
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# to display them.
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if isinstance(obj, StandaloneSpoke) and obj.completed:
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del(obj)
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return None
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obj.register_event_cb("continue", self._on_continue_clicked)
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obj.register_event_cb("quit", self._on_quit_clicked)
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return obj
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def run(self):
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from gi.repository import Gtk
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if Gtk.main_level() > 0:
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# Gtk main loop running. That means python-meh caught exception
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# and runs its main loop. Do not crash Gtk by running another one
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# from a different thread and just wait until python-meh is
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# finished, then quit.
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unbusyCursor()
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log.error("Unhandled exception caught, waiting for python-meh to "\
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"exit")
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while Gtk.main_level() > 0:
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time.sleep(2)
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sys.exit(0)
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while not self._currentAction:
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self._currentAction = self._instantiateAction(self._actions[0])
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if not self._currentAction:
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self._actions.pop(0)
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if not self._actions:
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sys.exit(0)
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return
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self._currentAction.initialize()
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# Do this at the last possible minute.
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unbusyCursor()
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self._currentAction.refresh()
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self._currentAction.window.set_beta(not isFinal)
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self._currentAction.window.set_property("distribution", distributionText().upper())
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# Set fonts app-wide, where possible
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settings = Gtk.Settings.get_default()
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settings.set_property("gtk-font-name", "Cantarell")
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self._currentAction.window.show_all()
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Gtk.main()
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###
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### MESSAGE HANDLING METHODS
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###
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@gtk_thread_wait
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def showError(self, message):
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from gi.repository import AnacondaWidgets, Gtk
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dlg = Gtk.MessageDialog(flags=Gtk.DialogFlags.MODAL,
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message_type=Gtk.MessageType.ERROR,
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buttons=Gtk.ButtonsType.NONE,
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message_format=message)
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dlg.set_decorated(False)
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dlg.add_button(_("_Exit Installer"), 0)
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with enlightbox(self._currentAction.window, dlg):
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dlg.run()
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dlg.destroy()
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@gtk_thread_wait
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def showDetailedError(self, message, details):
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from pyanaconda.ui.gui.spokes.lib.detailederror import DetailedErrorDialog
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dlg = DetailedErrorDialog(None, buttons=[_("_Quit")],
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label=message)
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with enlightbox(self._currentAction.window, dlg.window):
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dlg.refresh(details)
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rc = dlg.run()
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dlg.window.destroy()
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@gtk_thread_wait
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def showYesNoQuestion(self, message):
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from gi.repository import AnacondaWidgets, Gtk
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dlg = Gtk.MessageDialog(flags=Gtk.DialogFlags.MODAL,
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message_type=Gtk.MessageType.QUESTION,
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buttons=Gtk.ButtonsType.NONE,
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message_format=message)
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dlg.set_decorated(False)
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dlg.add_buttons(_("_No"), 0, _("_Yes"), 1)
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dlg.set_default_response(1)
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with enlightbox(self._currentAction.window, dlg):
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rc = dlg.run()
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dlg.destroy()
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return bool(rc)
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def mainExceptionWindow(self, text, exn_file, *args, **kwargs):
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from gi.repository import Gtk, AnacondaWidgets
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meh_intf = meh.ui.gui.GraphicalIntf()
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exc_window = meh_intf.mainExceptionWindow(text, exn_file)
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exc_window.main_window.set_decorated(False)
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# exception may appear before self._actions gets populated
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if len(self._actions) > 0:
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lightbox = AnacondaWidgets.lb_show_over(self._currentAction.window)
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exc_window.main_window.set_transient_for(lightbox)
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# without WindowGroup, python-meh's window is insensitive if it appears
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# above a spoke (Gtk.Window running its own Gtk.main loop)
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window_group = Gtk.WindowGroup()
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window_group.add_window(exc_window.main_window)
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return exc_window
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def saveExceptionWindow(self, account_manager, signature, *args, **kwargs):
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meh_intf = meh.ui.gui.GraphicalIntf()
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meh_intf.saveExceptionWindow(account_manager, signature)
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###
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### SIGNAL HANDLING METHODS
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###
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def _on_continue_clicked(self):
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# If we're on the last screen, clicking Continue quits.
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if len(self._actions) == 1:
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sys.exit(0)
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return
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nextAction = None
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ndx = 0
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# If the current action wants us to jump to an arbitrary point ahead,
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# look for where that is now.
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if self._currentAction.skipTo:
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found = False
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for ndx in range(1, len(self._actions)):
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if self._actions[ndx].__class__.__name__ == self._currentAction.skipTo:
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found = True
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break
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# If we found the point in question, compose a new actions list
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# consisting of the current action, the one to jump to, and all
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# the ones after. That means the rest of the code below doesn't
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# have to change.
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if found:
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self._actions = [self._actions[0]] + self._actions[ndx:]
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# _instantiateAction returns None for actions that should not be
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# displayed (because they're already completed, for instance) so skip
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# them here.
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while not nextAction:
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nextAction = self._instantiateAction(self._actions[1])
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if not nextAction:
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self._actions.pop(1)
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if not self._actions:
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sys.exit(0)
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return
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nextAction.initialize()
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nextAction.window.set_beta(self._currentAction.window.get_beta())
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nextAction.window.set_property("distribution", distributionText().upper())
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if not nextAction.showable:
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self._currentAction.window.hide()
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self._actions.pop(0)
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self._on_continue_clicked()
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return
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nextAction.refresh()
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# Do this last. Setting up curAction could take a while, and we want
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# to leave something on the screen while we work.
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nextAction.window.show_all()
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self._currentAction.window.hide()
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self._currentAction = nextAction
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self._actions.pop(0)
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def _on_quit_clicked(self):
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dialog = QuitDialog(None)
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with enlightbox(self._currentAction.window, dialog.window):
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rc = dialog.run()
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dialog.window.destroy()
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if rc == 1:
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sys.exit(0)
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class GUIObject(common.UIObject):
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"""This is the base class from which all other GUI classes are derived. It
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thus contains only attributes and methods that are common to everything
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else. It should not be directly instantiated.
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Class attributes:
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builderObjects -- A list of UI object names that should be extracted from
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uiFile and exposed for this class to use. If this list
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is empty, all objects will be exposed.
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Only the following kinds of objects need to be exported:
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(1) Top-level objects (like GtkDialogs) that are directly
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used in Python.
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(2) Top-level objects that are not directly used in
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Python, but are used by another object somewhere down
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in the hierarchy. This includes things like a custom
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GtkImage used by a button that is part of an exported
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dialog, and a GtkListStore that is the model of a
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Gtk*View that is part of an exported object.
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mainWidgetName -- The name of the top-level widget this object
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object implements. This will be the widget searched
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for in uiFile by the window property.
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uiFile -- The location of an XML file that describes the layout
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of widgets shown by this object. UI files are
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searched for relative to the same directory as this
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object's module.
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"""
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builderObjects = []
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mainWidgetName = None
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uiFile = ""
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def __init__(self, data):
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"""Create a new UIObject instance, including loading its uiFile and
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all UI-related objects.
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Instance attributes:
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data -- An instance of a pykickstart Handler object. The Hub
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never directly uses this instance. Instead, it passes
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it down into Spokes when they are created and applied.
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The Hub simply stores this instance so it doesn't need
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to be passed by the user.
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skipTo -- If this attribute is set to something other than None,
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it must be the name of a class (as a string). Then,
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the interface will skip to the first instance of that
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class in the action list instead of going on to
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whatever the next action is normally.
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Note that actions may only skip ahead, never backwards.
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Also, standalone spokes may not skip to an individual
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spoke off a hub. They can only skip to the hub
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itself.
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"""
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common.UIObject.__init__(self, data)
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if self.__class__ is GUIObject:
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raise TypeError("GUIObject is an abstract class")
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self.skipTo = None
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self.applyOnSkip = False
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from gi.repository import Gtk
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self.builder = Gtk.Builder()
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self.builder.set_translation_domain("anaconda")
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self._window = None
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if self.builderObjects:
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self.builder.add_objects_from_file(self._findUIFile(), self.builderObjects)
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else:
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self.builder.add_from_file(self._findUIFile())
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self.builder.connect_signals(self)
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self.window.connect("key-release-event", self._handlePrntScreen)
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def _findUIFile(self):
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path = os.environ.get("UIPATH", "./:/tmp/updates/:/tmp/updates/ui/:/usr/share/anaconda/ui/")
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for d in path.split(":"):
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testPath = os.path.normpath(d + self.uiFile)
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if os.path.isfile(testPath) and os.access(testPath, os.R_OK):
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return testPath
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raise IOError("Could not load UI file '%s' for object '%s'" % (self.uiFile, self))
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def _handlePrntScreen(self, window, event):
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global _screenshotIndex
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if event.keyval != Gdk.KEY_Print:
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return
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# Make sure the screenshot directory exists.
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if not os.access("/tmp/anaconda-screenshots", os.W_OK):
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os.mkdir("/tmp/anaconda-screenshots")
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fn = "/tmp/anaconda-screenshots/screenshot-%04d.png" % _screenshotIndex
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win = window.get_window()
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width = win.get_width()
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height = win.get_height()
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pixbuf = Gdk.pixbuf_get_from_window(win, 0, 0, width, height)
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pixbuf.savev(fn, "png", [], [])
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_screenshotIndex += 1
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@property
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def window(self):
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"""Return the top-level object out of the GtkBuilder representation
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previously loaded by the load method.
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"""
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# This will raise an AttributeError if the subclass failed to set a
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# mainWidgetName attribute, which is exactly what I want.
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if not self._window:
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self._window = self.builder.get_object(self.mainWidgetName)
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return self._window
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def clear_info(self):
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"""Clear any info bar from the bottom of the screen."""
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self.window.clear_info()
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def set_error(self, msg):
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"""Display an info bar along the bottom of the screen with the provided
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message. This method is used to display critical errors anaconda
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may not be able to do anything about, but that the user may. A
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suitable background color and icon will be displayed.
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"""
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self.window.set_error(msg)
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def set_info(self, msg):
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"""Display an info bar along the bottom of the screen with the provided
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message. This method is used to display informational text -
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non-critical warnings during partitioning, for instance. The user
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should investigate these messages but doesn't have to. A suitable
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background color and icon will be displayed.
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"""
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self.window.set_info(msg)
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def set_warning(self, msg):
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"""Display an info bar along the bottom of the screen with the provided
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message. This method is used to display errors the user needs to
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attend to in order to continue installation. This is the bulk of
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messages. A suitable background color and icon will be displayed.
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"""
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self.window.set_warning(msg)
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class QuitDialog(GUIObject):
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builderObjects = ["quitDialog"]
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mainWidgetName = "quitDialog"
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uiFile = "main.glade"
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def run(self):
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rc = self.window.run()
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return rc
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def busyCursor():
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window = Gdk.get_default_root_window()
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window.set_cursor(Gdk.Cursor(Gdk.CursorType.WATCH))
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def unbusyCursor():
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window = Gdk.get_default_root_window()
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window.set_cursor(Gdk.Cursor(Gdk.CursorType.ARROW))
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