# The main file for anaconda TUI interface # # Copyright (C) (2012) Red Hat, Inc. # # This copyrighted material is made available to anyone wishing to use, # modify, copy, or redistribute it subject to the terms and conditions of # the GNU General Public License v.2, or (at your option) any later version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY expressed or implied, including the implied warranties of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. You should have received a copy of the # GNU General Public License along with this program; if not, write to the # Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. Any Red Hat trademarks that are incorporated in the # source code or documentation are not subject to the GNU General Public # License and may only be used or replicated with the express permission of # Red Hat, Inc. # # Red Hat Author(s): Martin Sivak # from pyanaconda import ui from pyanaconda.ui import common from pyanaconda.flags import flags import simpleline as tui from hubs.summary import SummaryHub from hubs.progress import ProgressHub from spokes import StandaloneSpoke import os import gettext _ = lambda x: gettext.ldgettext("anaconda", x) class ErrorDialog(tui.UIScreen): """Dialog screen for reporting errors to user.""" title = _("Error") def __init__(self, app, message): """ :param app: the running application reference :type app: instance of App class :param message: the message to show to the user :type message: unicode """ tui.UIScreen.__init__(self, app) self._message = message def refresh(self, args = None): tui.UIScreen.refresh(self, args) text = tui.TextWidget(self._message) self._window.append(tui.CenterWidget(text)) def prompt(self, args = None): return _("Press enter to exit.") def input(self, args, key): """This dialog is closed by any input.""" self.close() class YesNoDialog(tui.UIScreen): """Dialog screen for Yes - No questions.""" title = _("Question") def __init__(self, app, message): """ :param app: the running application reference :type app: instance of App class :param message: the message to show to the user :type message: unicode """ tui.UIScreen.__init__(self, app) self._message = message self._response = None def refresh(self, args = None): tui.UIScreen.refresh(self, args) text = tui.TextWidget(self._message) self._window.append(tui.CenterWidget(text)) self._window.append(u"") return True def prompt(self, args): return _("Please respond 'yes' or 'no': ") def input(self, args, key): if key == _("yes"): self._response = True self.close() return None elif key == _("no"): self._response = False self.close() return None else: return False @property def answer(self): """The response can be True (yes), False (no) or None (no response).""" return self._response class TextUserInterface(ui.UserInterface): """This is the main class for Text user interface.""" def __init__(self, storage, payload, instclass): """ For detailed description of the arguments see the parent class. :param storage: storage backend reference :type storage: instance of pyanaconda.Storage :param payload: payload (usually yum) reference :type payload: instance of payload handler :param instclass: install class reference :type instclass: instance of install class """ ui.UserInterface.__init__(self, storage, payload, instclass) self._app = None def setup(self, data): """Construct all the objects required to implement this interface. This method must be provided by all subclasses. """ self._app = tui.App(u"Anaconda", yes_or_no_question = YesNoDialog) self._hubs = [SummaryHub, ProgressHub] # First, grab a list of all the standalone spokes. path = os.path.join(os.path.dirname(__file__), "spokes") actionClasses = self.getActionClasses("pyanaconda.ui.tui.spokes.%s", path, self._hubs, StandaloneSpoke) for klass in actionClasses: obj = klass(self._app, data, self.storage, self.payload, self.instclass) # If we are doing a kickstart install, some standalone spokes # could already be filled out. In taht case, we do not want # to display them. if isinstance(obj, StandaloneSpoke) and obj.completed: del(obj) continue self._app.schedule_screen(obj) def run(self): """Run the interface. This should do little more than just pass through to something else's run method, but is provided here in case more is needed. This method must be provided by all subclasses. """ self._app.run() ### ### MESSAGE HANDLING METHODS ### def showError(self, message): """Display an error dialog with the given message. After this dialog is displayed, anaconda will quit. There is no return value. This method must be implemented by all UserInterface subclasses. In the code, this method should be used sparingly and only for critical errors that anaconda cannot figure out how to recover from. """ error_window = ErrorDialog(self._app, message) self._app.switch_screen(error_window) def showDetailedError(self, message, details): self.showError(message + "\n\n" + details) def showYesNoQuestion(self, message): """Display a dialog with the given message that presents the user a yes or no choice. This method returns True if the yes choice is selected, and False if the no choice is selected. From here, anaconda can figure out what to do next. This method must be implemented by all UserInterface subclasses. In the code, this method should be used sparingly and only for those times where anaconda cannot make a reasonable decision. We don't want to overwhelm the user with choices. When cmdline mode is active, the default will be to answer no. """ if flags.automatedInstall and not flags.ksprompt: # If we're in cmdline mode, just say no. return False question_window = YesNoDialog(self._app, message) self._app.switch_screen_modal(question_window) return question_window.answer