gajim-plural/gajim/gtk/dialogs.py

# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim 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. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.

from datetime import datetime

from collections import namedtuple

from gi.repository import GLib
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import Pango

from gajim.common import app
from gajim.common import helpers
from gajim.common.i18n import _
from gajim.common.const import ButtonAction

from gajim.gtk.util import get_builder


class DialogButton(namedtuple('DialogButton', ('response text callback args '
                                               'kwargs action is_default'))):
    @classmethod
    def make(cls, type_=None, **kwargs):
        # Defaults
        default_kwargs = {
            'response': None,
            'text': None,
            'callback': None,
            'args': [],
            'kwargs': {},
            'action': None,
            'is_default': False
        }

        if type_ is not None:
            if type_ == 'OK':
                default_kwargs['response'] = Gtk.ResponseType.OK
                default_kwargs['text'] = 'OK'

            elif type_ == 'Cancel':
                default_kwargs['response'] = Gtk.ResponseType.CANCEL
                default_kwargs['text'] = _('Cancel')

            elif type_ == 'Delete':
                default_kwargs['response'] = Gtk.ResponseType.OK
                default_kwargs['text'] = _('Delete')
                default_kwargs['action'] = ButtonAction.DESTRUCTIVE

            elif type_ == 'Remove':
                default_kwargs['response'] = Gtk.ResponseType.OK
                default_kwargs['text'] = _('Remove')
                default_kwargs['action'] = ButtonAction.DESTRUCTIVE
            else:
                raise ValueError('Unknown button type: %s ' % type_)

        default_kwargs.update(kwargs)
        return cls(**default_kwargs)


class HigDialog(Gtk.MessageDialog):
    def __init__(self, parent, type_, buttons, pritext, sectext,
    on_response_ok=None, on_response_cancel=None, on_response_yes=None,
    on_response_no=None):
        self.call_cancel_on_destroy = True
        Gtk.MessageDialog.__init__(self, transient_for=parent,
           modal=True, destroy_with_parent=True,
           message_type=type_, buttons=buttons, text=pritext)

        self.format_secondary_markup(sectext)

        self.possible_responses = {Gtk.ResponseType.OK: on_response_ok,
            Gtk.ResponseType.CANCEL: on_response_cancel,
            Gtk.ResponseType.YES: on_response_yes,
            Gtk.ResponseType.NO: on_response_no}

        self.connect('response', self.on_response)
        self.connect('destroy', self.on_dialog_destroy)

    def on_response(self, dialog, response_id):
        if response_id not in self.possible_responses:
            return
        if not self.possible_responses[response_id]:
            self.destroy()
        elif isinstance(self.possible_responses[response_id], tuple):
            if len(self.possible_responses[response_id]) == 1:
                self.possible_responses[response_id][0](dialog)
            else:
                self.possible_responses[response_id][0](dialog,
                    *self.possible_responses[response_id][1:])
        else:
            self.possible_responses[response_id](dialog)

    def on_dialog_destroy(self, widget):
        if not self.call_cancel_on_destroy:
            return
        cancel_handler = self.possible_responses[Gtk.ResponseType.CANCEL]
        if not cancel_handler:
            return False
        if isinstance(cancel_handler, tuple):
            cancel_handler[0](None, *cancel_handler[1:])
        else:
            cancel_handler(None)

    def popup(self):
        """
        Show dialog
        """
        vb = self.get_children()[0].get_children()[0] # Give focus to top vbox
#        vb.set_flags(Gtk.CAN_FOCUS)
        vb.grab_focus()
        self.show_all()


class AspellDictError:
    def __init__(self, lang):
        ErrorDialog(
            _('Dictionary for language "%s" not available') % lang,
            _('You have to install the dictionary "%s" to use spellchecking, '
              'or choose another language by setting the speller_language '
              'option.\n\n'
              'Highlighting misspelled words feature will not be used') % lang)


class ConfirmationDialog(HigDialog):
    """
    HIG compliant confirmation dialog
    """

    def __init__(self, pritext, sectext='', on_response_ok=None,
    on_response_cancel=None, transient_for=None):
        self.user_response_ok = on_response_ok
        self.user_response_cancel = on_response_cancel
        HigDialog.__init__(self, transient_for,
           Gtk.MessageType.QUESTION, Gtk.ButtonsType.OK_CANCEL, pritext, sectext,
           self.on_response_ok, self.on_response_cancel)
        self.popup()

    def on_response_ok(self, widget):
        if self.user_response_ok:
            if isinstance(self.user_response_ok, tuple):
                self.user_response_ok[0](*self.user_response_ok[1:])
            else:
                self.user_response_ok()
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_cancel(self, widget):
        if self.user_response_cancel:
            if isinstance(self.user_response_cancel, tuple):
                self.user_response_cancel[0](*self.user_response_ok[1:])
            else:
                self.user_response_cancel()
        self.call_cancel_on_destroy = False
        self.destroy()


class NonModalConfirmationDialog(HigDialog):
    """
    HIG compliant non modal confirmation dialog
    """

    def __init__(self, pritext, sectext='', on_response_ok=None,
    on_response_cancel=None):
        self.user_response_ok = on_response_ok
        self.user_response_cancel = on_response_cancel
        transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.QUESTION,
            Gtk.ButtonsType.OK_CANCEL, pritext, sectext, self.on_response_ok,
            self.on_response_cancel)
        self.set_modal(False)

    def on_response_ok(self, widget):
        if self.user_response_ok:
            if isinstance(self.user_response_ok, tuple):
                self.user_response_ok[0](*self.user_response_ok[1:])
            else:
                self.user_response_ok()
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_cancel(self, widget):
        if self.user_response_cancel:
            if isinstance(self.user_response_cancel, tuple):
                self.user_response_cancel[0](*self.user_response_cancel[1:])
            else:
                self.user_response_cancel()
        self.call_cancel_on_destroy = False
        self.destroy()


class WarningDialog(HigDialog):
    """
    HIG compliant warning dialog
    """

    def __init__(self, pritext, sectext='', transient_for=None):
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.WARNING,
            Gtk.ButtonsType.OK, pritext, sectext)
        self.set_modal(False)
        self.popup()


class InformationDialog(HigDialog):
    """
    HIG compliant info dialog
    """

    def __init__(self, pritext, sectext='', transient_for=None):
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.INFO, Gtk.ButtonsType.OK,
            pritext, sectext)
        self.set_modal(False)
        self.popup()


class ErrorDialog(HigDialog):
    """
    HIG compliant error dialog
    """

    def __init__(self, pritext, sectext='', on_response_ok=None,
    on_response_cancel=None, transient_for=None):
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.ERROR, Gtk.ButtonsType.OK,
            pritext, sectext, on_response_ok=on_response_ok,
            on_response_cancel=on_response_cancel)
        self.popup()


class YesNoDialog(HigDialog):
    """
    HIG compliant YesNo dialog
    """

    def __init__(self, pritext, sectext='', checktext='', text_label=None,
    on_response_yes=None, on_response_no=None, type_=Gtk.MessageType.QUESTION,
    transient_for=None):
        self.user_response_yes = on_response_yes
        self.user_response_no = on_response_no
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, type_, Gtk.ButtonsType.YES_NO, pritext,
            sectext, on_response_yes=self.on_response_yes,
            on_response_no=self.on_response_no)

        vbox = self.get_content_area()
        if checktext:
            self.checkbutton = Gtk.CheckButton.new_with_mnemonic(checktext)
            vbox.pack_start(self.checkbutton, False, True, 0)
        else:
            self.checkbutton = None
        if text_label:
            label = Gtk.Label(label=text_label)
            vbox.pack_start(label, False, True, 0)
            buff = Gtk.TextBuffer()
            self.textview = Gtk.TextView.new_with_buffer(buff)
            frame = Gtk.Frame()
            frame.set_shadow_type(Gtk.ShadowType.IN)
            frame.add(self.textview)
            vbox.pack_start(frame, False, True, 0)
        else:
            self.textview = None
        self.set_modal(False)
        self.popup()

    def on_response_yes(self, widget):
        if self.user_response_yes:
            if self.textview:
                buff = self.textview.get_buffer()
                start, end = buff.get_bounds()
                txt = self.textview.get_buffer().get_text(start, end, True)

            if isinstance(self.user_response_yes, tuple):
                if self.textview:
                    self.user_response_yes[0](self.is_checked(), txt,
                        *self.user_response_yes[1:])
                else:
                    self.user_response_yes[0](self.is_checked(),
                        *self.user_response_yes[1:])
            else:
                if self.textview:
                    self.user_response_yes(self.is_checked(), txt)
                else:
                    self.user_response_yes(self.is_checked())
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_no(self, widget):
        if self.user_response_no:
            if self.textview:
                buff = self.textview.get_buffer()
                start, end = buff.get_bounds()
                txt = self.textview.get_buffer().get_text(start, end, True)

            if isinstance(self.user_response_no, tuple):
                if self.textview:
                    self.user_response_no[0](txt, *self.user_response_no[1:])
                else:
                    self.user_response_no[0](*self.user_response_no[1:])
            else:
                if self.textview:
                    self.user_response_no(txt)
                else:
                    self.user_response_no()
        self.call_cancel_on_destroy = False
        self.destroy()

    def is_checked(self):
        """
        Get active state of the checkbutton
        """
        if not self.checkbutton:
            return False
        return self.checkbutton.get_active()


class ConfirmationDialogCheck(ConfirmationDialog):
    """
    HIG compliant confirmation dialog with checkbutton
    """

    def __init__(self, pritext, sectext='', checktext='', on_response_ok=None,
    on_response_cancel=None, is_modal=True, transient_for=None):
        self.user_response_ok = on_response_ok
        self.user_response_cancel = on_response_cancel
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.QUESTION,
           Gtk.ButtonsType.OK_CANCEL, pritext, sectext, self.on_response_ok,
           self.on_response_cancel)

        self.set_default_response(Gtk.ResponseType.OK)

        ok_button = self.get_widget_for_response(Gtk.ResponseType.OK)
        ok_button.grab_focus()

        self.checkbutton = Gtk.CheckButton.new_with_mnemonic(checktext)
        self.get_content_area().pack_start(self.checkbutton, False, True, 0)
        self.set_modal(is_modal)
        self.popup()

    def on_response_ok(self, widget):
        if self.user_response_ok:
            if isinstance(self.user_response_ok, tuple):
                self.user_response_ok[0](self.is_checked(),
                    *self.user_response_ok[1:])
            else:
                self.user_response_ok(self.is_checked())
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_cancel(self, widget):
        if self.user_response_cancel:
            if isinstance(self.user_response_cancel, tuple):
                self.user_response_cancel[0](self.is_checked(),
                    *self.user_response_cancel[1:])
            else:
                self.user_response_cancel(self.is_checked())
        self.call_cancel_on_destroy = False
        self.destroy()

    def is_checked(self):
        """
        Get active state of the checkbutton
        """
        return self.checkbutton.get_active()


class ConfirmationDialogDoubleCheck(ConfirmationDialog):
    """
    HIG compliant confirmation dialog with 2 checkbuttons
    """

    def __init__(self, pritext, sectext='', checktext1='', checktext2='',
    tooltip1='', tooltip2='', on_response_ok=None, on_response_cancel=None,
    transient_for=None, is_modal=True):
        self.user_response_ok = on_response_ok
        self.user_response_cancel = on_response_cancel
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.QUESTION,
           Gtk.ButtonsType.OK_CANCEL, pritext, sectext, self.on_response_ok,
           self.on_response_cancel)

        self.set_default_response(Gtk.ResponseType.OK)

        ok_button = self.get_widget_for_response(Gtk.ResponseType.OK)
        ok_button.grab_focus()

        vbox = self.get_content_area()
        if checktext1:
            self.checkbutton1 = Gtk.CheckButton.new_with_mnemonic(checktext1)
            if tooltip1:
                self.checkbutton1.set_tooltip_text(tooltip1)
            vbox.pack_start(self.checkbutton1, False, True, 0)
        else:
            self.checkbutton1 = None
        if checktext2:
            self.checkbutton2 = Gtk.CheckButton.new_with_mnemonic(checktext2)
            if tooltip2:
                self.checkbutton2.set_tooltip_text(tooltip2)
            vbox.pack_start(self.checkbutton2, False, True, 0)
        else:
            self.checkbutton2 = None

        self.set_modal(is_modal)
        self.popup()

    def on_response_ok(self, widget):
        if self.user_response_ok:
            if isinstance(self.user_response_ok, tuple):
                self.user_response_ok[0](self.is_checked(),
                    *self.user_response_ok[1:])
            else:
                self.user_response_ok(self.is_checked())
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_cancel(self, widget):
        if self.user_response_cancel:
            if isinstance(self.user_response_cancel, tuple):
                self.user_response_cancel[0](*self.user_response_cancel[1:])
            else:
                self.user_response_cancel()
        self.call_cancel_on_destroy = False
        self.destroy()

    def is_checked(self):
        ''' Get active state of the checkbutton '''
        if self.checkbutton1:
            is_checked_1 = self.checkbutton1.get_active()
        else:
            is_checked_1 = False
        if self.checkbutton2:
            is_checked_2 = self.checkbutton2.get_active()
        else:
            is_checked_2 = False
        return [is_checked_1, is_checked_2]


class PlainConnectionDialog(ConfirmationDialogDoubleCheck):
    """
    Dialog that is shown when using an insecure connection
    """
    def __init__(self, account, on_ok, on_cancel):
        pritext = _('Insecure connection')
        sectext = _('You are about to connect to the account %(account)s '
            '(%(server)s) insecurely. This means conversations will not be '
            'encrypted, and is strongly discouraged.\nAre you sure you want '
            'to do that?') % {'account': account,
            'server': app.get_hostname_from_account(account)}
        checktext1 = _('Yes, I really want to connect insecurely')
        tooltip1 = _('Gajim will NOT connect unless you check this box')
        checktext2 = _('_Do not ask me again')
        ConfirmationDialogDoubleCheck.__init__(self, pritext, sectext,
            checktext1, checktext2, tooltip1=tooltip1, on_response_ok=on_ok,
            on_response_cancel=on_cancel, is_modal=False)
        self.ok_button = self.get_widget_for_response(Gtk.ResponseType.OK)
        self.ok_button.set_sensitive(False)
        self.checkbutton1.connect('clicked', self.on_checkbutton_clicked)
        self.set_title(_('Insecure connection'))

    def on_checkbutton_clicked(self, widget):
        self.ok_button.set_sensitive(widget.get_active())

class ConfirmationDialogDoubleRadio(ConfirmationDialog):
    """
    HIG compliant confirmation dialog with 2 radios
    """
    def __init__(self, pritext, sectext='', radiotext1='', radiotext2='',
    on_response_ok=None, on_response_cancel=None, is_modal=True, transient_for=None):
        self.user_response_ok = on_response_ok
        self.user_response_cancel = on_response_cancel

        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.QUESTION,
                Gtk.ButtonsType.OK_CANCEL, pritext, sectext, self.on_response_ok,
                self.on_response_cancel)

        self.set_default_response(Gtk.ResponseType.OK)

        ok_button = self.get_widget_for_response(Gtk.ResponseType.OK)
        ok_button.grab_focus()

        vbox = self.get_content_area()
        self.radiobutton1 = Gtk.RadioButton(label=radiotext1)
        vbox.pack_start(self.radiobutton1, False, True, 0)

        self.radiobutton2 = Gtk.RadioButton(group=self.radiobutton1,
                label=radiotext2)
        vbox.pack_start(self.radiobutton2, False, True, 0)

        self.set_modal(is_modal)
        self.popup()

    def on_response_ok(self, widget):
        if self.user_response_ok:
            if isinstance(self.user_response_ok, tuple):
                self.user_response_ok[0](self.is_checked(),
                        *self.user_response_ok[1:])
            else:
                self.user_response_ok(self.is_checked())
        self.call_cancel_on_destroy = False
        self.destroy()

    def on_response_cancel(self, widget):
        if self.user_response_cancel:
            if isinstance(self.user_response_cancel, tuple):
                self.user_response_cancel[0](*self.user_response_cancel[1:])
            else:
                self.user_response_cancel()
        self.call_cancel_on_destroy = False
        self.destroy()

    def is_checked(self):
        ''' Get active state of the checkbutton '''
        if self.radiobutton1:
            is_checked_1 = self.radiobutton1.get_active()
        else:
            is_checked_1 = False
        if self.radiobutton2:
            is_checked_2 = self.radiobutton2.get_active()
        else:
            is_checked_2 = False
        return [is_checked_1, is_checked_2]

class FTOverwriteConfirmationDialog(ConfirmationDialog):
    """
    HIG compliant confirmation dialog to overwrite or resume a file transfert
    """
    def __init__(self, pritext, sectext='', propose_resume=True,
    on_response=None, transient_for=None):
        if transient_for is None:
            transient_for = app.app.get_active_window()
        HigDialog.__init__(self, transient_for, Gtk.MessageType.QUESTION,
            Gtk.ButtonsType.CANCEL, pritext, sectext)

        self.on_response = on_response

        if propose_resume:
            b = Gtk.Button(label='', stock=Gtk.STOCK_REFRESH)
            align = b.get_children()[0]
            hbox = align.get_children()[0]
            label = hbox.get_children()[1]
            label.set_text(_('_Resume'))
            label.set_use_underline(True)
            self.add_action_widget(b, 100)

        b = Gtk.Button(label='', stock=Gtk.STOCK_SAVE_AS)
        align = b.get_children()[0]
        hbox = align.get_children()[0]
        label = hbox.get_children()[1]
        label.set_text(_('Re_place'))
        label.set_use_underline(True)
        self.add_action_widget(b, 200)

        self.connect('response', self.on_dialog_response)
        self.show_all()

    def on_dialog_response(self, dialog, response):
        if self.on_response:
            if isinstance(self.on_response, tuple):
                self.on_response[0](response, *self.on_response[1:])
            else:
                self.on_response(response)
        self.call_cancel_on_destroy = False
        self.destroy()


class CommonInputDialog:
    """
    Common Class for Input dialogs
    """

    def __init__(self, title, label_str, is_modal, ok_handler, cancel_handler,
                 transient_for=None):
        self.dialog = self.xml.get_object('input_dialog')
        label = self.xml.get_object('label')
        self.dialog.set_title(title)
        label.set_markup(label_str)
        self.cancel_handler = cancel_handler
        self.vbox = self.xml.get_object('vbox')
        if transient_for is None:
            transient_for = app.app.get_active_window()
        self.dialog.set_transient_for(transient_for)

        self.ok_handler = ok_handler
        okbutton = self.xml.get_object('okbutton')
        okbutton.connect('clicked', self.on_okbutton_clicked)
        cancelbutton = self.xml.get_object('cancelbutton')
        cancelbutton.connect('clicked', self.on_cancelbutton_clicked)
        self.xml.connect_signals(self)
        self.dialog.show_all()

    def on_input_dialog_destroy(self, widget):
        if self.cancel_handler:
            self.cancel_handler()

    def on_okbutton_clicked(self, widget):
        user_input = self.get_text()
        if user_input:
            user_input = user_input
        self.cancel_handler = None
        self.dialog.destroy()
        if isinstance(self.ok_handler, tuple):
            self.ok_handler[0](user_input, *self.ok_handler[1:])
        else:
            self.ok_handler(user_input)

    def on_cancelbutton_clicked(self, widget):
        self.dialog.destroy()

    def destroy(self):
        self.dialog.destroy()


class InputDialog(CommonInputDialog):
    """
    Class for Input dialog
    """

    def __init__(self, title, label_str, input_str=None, is_modal=True,
                 ok_handler=None, cancel_handler=None, transient_for=None):
        self.xml = get_builder('input_dialog.ui')
        CommonInputDialog.__init__(self, title, label_str, is_modal,
                                   ok_handler, cancel_handler,
                                   transient_for=transient_for)
        self.input_entry = self.xml.get_object('input_entry')
        if input_str:
            self.set_entry(input_str)

    def on_input_dialog_delete_event(self, widget, event):
        '''
        may be implemented by subclasses
        '''

    def set_entry(self, value):
        self.input_entry.set_text(value)
        self.input_entry.select_region(0, -1) # select all

    def get_text(self):
        return self.input_entry.get_text()


class InputDialogCheck(InputDialog):
    """
    Class for Input dialog
    """

    def __init__(self, title, label_str, checktext='', input_str=None,
                 is_modal=True, ok_handler=None, cancel_handler=None,
                 transient_for=None):
        self.xml = get_builder('input_dialog.ui')
        InputDialog.__init__(self, title, label_str, input_str=input_str,
                             is_modal=is_modal, ok_handler=ok_handler,
                             cancel_handler=cancel_handler,
                             transient_for=transient_for)
        self.input_entry = self.xml.get_object('input_entry')
        if input_str:
            self.input_entry.set_text(input_str)
            self.input_entry.select_region(0, -1) # select all

        if checktext:
            self.checkbutton = Gtk.CheckButton.new_with_mnemonic(checktext)
            self.vbox.pack_start(self.checkbutton, False, True, 0)
            self.checkbutton.show()

    def on_okbutton_clicked(self, widget):
        user_input = self.get_text()
        if user_input:
            user_input = user_input
        self.cancel_handler = None
        self.dialog.destroy()
        if isinstance(self.ok_handler, tuple):
            self.ok_handler[0](user_input, self.is_checked(), *self.ok_handler[1:])
        else:
            self.ok_handler(user_input, self.is_checked())

    def get_text(self):
        return self.input_entry.get_text()

    def is_checked(self):
        """
        Get active state of the checkbutton
        """
        try:
            return self.checkbutton.get_active()
        except Exception:
            # There is no checkbutton
            return False


class ChangeNickDialog(InputDialogCheck):
    """
    Class for changing room nickname in case of conflict
    """

    def __init__(self, account, room_jid, title, prompt, check_text=None,
                 change_nick=False, transient_for=None):
        """
        change_nick must be set to True when we are already occupant of the room
        and we are changing our nick
        """
        InputDialogCheck.__init__(self, title, '',
                                  input_str='', is_modal=True, ok_handler=None,
                                  cancel_handler=None,
                                  transient_for=transient_for)
        self.room_queue = [(account, room_jid, prompt, change_nick)]
        self.check_next()

    def on_input_dialog_delete_event(self, widget, event):
        self.on_cancelbutton_clicked(widget)
        return True

    def setup_dialog(self):
        self.gc_control = app.interface.msg_win_mgr.get_gc_control(
                self.room_jid, self.account)
        if not self.gc_control and \
        self.room_jid in app.interface.minimized_controls[self.account]:
            self.gc_control = \
                app.interface.minimized_controls[self.account][self.room_jid]
        if not self.gc_control:
            self.check_next()
            return
        label = self.xml.get_object('label')
        label.set_markup(self.prompt)
        self.set_entry(self.gc_control.nick + \
                app.config.get('gc_proposed_nick_char'))

    def check_next(self):
        if not self.room_queue:
            self.cancel_handler = None
            self.dialog.destroy()
            if 'change_nick_dialog' in app.interface.instances:
                del app.interface.instances['change_nick_dialog']
            return
        self.account, self.room_jid, self.prompt, self.change_nick = \
            self.room_queue.pop(0)
        self.setup_dialog()
        self.dialog.show()

    def on_okbutton_clicked(self, widget):
        nick = self.get_text()
        if nick:
            nick = nick
        # send presence to room
        try:
            nick = helpers.parse_resource(nick)
        except Exception:
            # invalid char
            ErrorDialog(_('Invalid nickname'),
                    _('The nickname contains invalid characters.'))
            return
        self.on_ok(nick, self.is_checked())

    def on_ok(self, nick, is_checked):
        app.connections[self.account].join_gc(nick, self.room_jid, None,
            change_nick=self.change_nick)
        if app.gc_connected[self.account][self.room_jid]:
            # We are changing nick, we will change self.nick when we receive
            # presence that inform that it works
            self.gc_control.new_nick = nick
        else:
            # We are connecting, we will not get a changed nick presence so
            # change it NOW. We don't already have a nick so it's harmless
            self.gc_control.nick = nick
        self.check_next()

    def on_cancelbutton_clicked(self, widget):
        self.gc_control.new_nick = ''
        self.check_next()

    def add_room(self, account, room_jid, prompt, change_nick=False):
        if (account, room_jid, prompt, change_nick) not in self.room_queue:
            self.room_queue.append((account, room_jid, prompt, change_nick))


class InputTextDialog(CommonInputDialog):
    """
    Class for multilines Input dialog (more place than InputDialog)
    """

    def __init__(self, title, label_str, input_str=None, is_modal=True,
                 ok_handler=None, cancel_handler=None, transient_for=None):
        self.xml = get_builder('input_text_dialog.ui')
        CommonInputDialog.__init__(self, title, label_str, is_modal,
                                   ok_handler, cancel_handler,
                                   transient_for=transient_for)
        self.input_buffer = self.xml.get_object('input_textview').get_buffer()
        if input_str:
            self.input_buffer.set_text(input_str)
            start_iter, end_iter = self.input_buffer.get_bounds()
            self.input_buffer.select_range(start_iter, end_iter) # select all

    def get_text(self):
        start_iter, end_iter = self.input_buffer.get_bounds()
        return self.input_buffer.get_text(start_iter, end_iter, True)


class DoubleInputDialog:
    """
    Class for Double Input dialog
    """

    def __init__(self, title, label_str1, label_str2, input_str1=None,
    input_str2=None, is_modal=True, ok_handler=None, cancel_handler=None,
    transient_for=None):
        self.xml = get_builder('dubbleinput_dialog.ui')
        self.dialog = self.xml.get_object('dubbleinput_dialog')
        label1 = self.xml.get_object('label1')
        self.input_entry1 = self.xml.get_object('input_entry1')
        label2 = self.xml.get_object('label2')
        self.input_entry2 = self.xml.get_object('input_entry2')
        self.dialog.set_title(title)
        label1.set_markup(label_str1)
        label2.set_markup(label_str2)
        self.cancel_handler = cancel_handler
        if input_str1:
            self.input_entry1.set_text(input_str1)
            self.input_entry1.select_region(0, -1) # select all
        if input_str2:
            self.input_entry2.set_text(input_str2)
            self.input_entry2.select_region(0, -1) # select all
        if transient_for is None:
            transient_for = app.app.get_active_window()
        self.dialog.set_transient_for(transient_for)

        self.dialog.set_modal(is_modal)

        self.ok_handler = ok_handler
        okbutton = self.xml.get_object('okbutton')
        okbutton.connect('clicked', self.on_okbutton_clicked)
        cancelbutton = self.xml.get_object('cancelbutton')
        cancelbutton.connect('clicked', self.on_cancelbutton_clicked)
        self.xml.connect_signals(self)
        self.dialog.show_all()

    def on_dubbleinput_dialog_destroy(self, widget):
        if not self.cancel_handler:
            return False
        if isinstance(self.cancel_handler, tuple):
            self.cancel_handler[0](*self.cancel_handler[1:])
        else:
            self.cancel_handler()

    def on_okbutton_clicked(self, widget):
        user_input1 = self.input_entry1.get_text()
        user_input2 = self.input_entry2.get_text()
        self.cancel_handler = None
        self.dialog.destroy()
        if not self.ok_handler:
            return
        if isinstance(self.ok_handler, tuple):
            self.ok_handler[0](user_input1, user_input2, *self.ok_handler[1:])
        else:
            self.ok_handler(user_input1, user_input2)

    def on_cancelbutton_clicked(self, widget):
        self.dialog.destroy()
        if not self.cancel_handler:
            return
        if isinstance(self.cancel_handler, tuple):
            self.cancel_handler[0](*self.cancel_handler[1:])
        else:
            self.cancel_handler()


class CertificateDialog(Gtk.ApplicationWindow):
    def __init__(self, transient_for, account, cert):
        Gtk.ApplicationWindow.__init__(self)
        self.set_name('CertificateDialog')
        self.set_application(app.app)
        self.set_show_menubar(False)
        self.set_resizable(False)
        self.set_position(Gtk.WindowPosition.CENTER)
        self.set_title(_('Certificate'))

        self._ui = get_builder('certificate_dialog.ui')
        self.add(self._ui.certificate_box)

        self._clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)

        # Get data for labels and copy button
        issuer = cert.get_issuer()
        subject = cert.get_subject()

        self._headline = _('Certificate for account\n%s') % account
        self._it_common_name = subject.commonName or ''
        self._it_organization = subject.organizationName or ''
        self._it_org_unit = subject.organizationalUnitName or ''
        self._it_serial_number = str(cert.get_serial_number())
        self._ib_common_name = issuer.commonName or ''
        self._ib_organization = issuer.organizationName or ''
        self._ib_org_unit = issuer.organizationalUnitName or ''
        issued = datetime.strptime(cert.get_notBefore().decode('ascii'),
                                         '%Y%m%d%H%M%SZ')
        self._issued = issued.strftime('%B %d, %Y, %H:%M:%S %z')
        expires = datetime.strptime(cert.get_notAfter().decode('ascii'),
                                          '%Y%m%d%H%M%SZ')
        self._expires = expires.strftime('%B %d, %Y, %H:%M:%S %z')
        self._sha1 = cert.digest('sha1').decode('utf-8')
        self._sha256 = cert.digest('sha256').decode('utf-8')

        # Set labels
        self._ui.label_cert_for_account.set_text(self._headline)
        self._ui.data_it_common_name.set_text(self._it_common_name)
        self._ui.data_it_organization.set_text(self._it_organization)
        self._ui.data_it_organizational_unit.set_text(self._it_org_unit)
        self._ui.data_it_serial_number.set_text(self._it_serial_number)
        self._ui.data_ib_common_name.set_text(self._ib_common_name)
        self._ui.data_ib_organization.set_text(self._ib_organization)
        self._ui.data_ib_organizational_unit.set_text(self._ib_org_unit)
        self._ui.data_issued_on.set_text(self._issued)
        self._ui.data_expires_on.set_text(self._expires)
        self._ui.data_sha1.set_text(self._sha1)
        self._ui.data_sha256.set_text(self._sha256)

        self.set_transient_for(transient_for)
        self._ui.connect_signals(self)
        self.show_all()

    def _on_copy_cert_info_button_clicked(self, widget):
        clipboard_text = \
            self._headline + '\n\n' + \
            _('Issued to\n') + \
            _('Common Name (CN): ') + self._it_common_name + '\n' + \
            _('Organization (O): ') + self._it_organization + '\n' + \
            _('Organizational Unit (OU): ') + self._it_org_unit + '\n' + \
            _('Serial Number: ') + self._it_serial_number + '\n\n' + \
            _('Issued by\n') + \
            _('Common Name (CN): ') + self._ib_common_name + '\n' + \
            _('Organization (O): ') + self._ib_organization + '\n' + \
            _('Organizational Unit (OU): ') + self._ib_org_unit + '\n\n' + \
            _('Validity\n') + \
            _('Issued on: ') + self._issued + '\n' + \
            _('Expires on: ') + self._expires + '\n\n' + \
            _('SHA-1:') + '\n' + \
            self._sha1 + '\n' + \
            _('SHA-256:') + '\n' + \
            self._sha256 + '\n'
        self._clipboard.set_text(clipboard_text, -1)


class SSLErrorDialog(ConfirmationDialogDoubleCheck):
    def __init__(self, account, certificate, pritext, sectext, checktext1,
                 checktext2, on_response_ok=None, on_response_cancel=None):
        self.account = account
        self.cert = certificate
        ConfirmationDialogDoubleCheck.__init__(
            self, pritext, sectext,
            checktext1, checktext2, on_response_ok=on_response_ok,
            on_response_cancel=on_response_cancel, is_modal=False)
        b = Gtk.Button(_('View certificate…'))
        b.connect('clicked', self.on_cert_clicked)
        b.show_all()
        area = self.get_action_area()
        area.pack_start(b, True, True, 0)

    def on_cert_clicked(self, button):
        CertificateDialog(self, self.account, self.cert)


class ChangePasswordDialog(Gtk.Dialog):
    def __init__(self, account, success_cb, transient_for):
        super().__init__(title=_('Change Password'),
                         transient_for=transient_for,
                         destroy_with_parent=True)

        self._account = account
        self._success_cb = success_cb

        self._builder = get_builder('change_password_dialog.ui')
        self.get_content_area().add(
            self._builder.get_object('change_password_box'))
        self._password1_entry = self._builder.get_object('password1_entry')
        self._password2_entry = self._builder.get_object('password2_entry')
        self._error_label = self._builder.get_object('error_label')

        self.add_button(_('_OK'), Gtk.ResponseType.OK)
        self.set_default_response(Gtk.ResponseType.OK)
        self.get_style_context().add_class('dialog-margin')
        self.connect('response', self._on_dialog_response)
        self.show_all()

    def _on_dialog_response(self, dialog, response):
        if response != Gtk.ResponseType.OK:
            self.destroy()
            return

        password1 = self._password1_entry.get_text()
        if not password1:
            self._error_label.set_text(_('You must enter a password'))
            return
        password2 = self._password2_entry.get_text()
        if password1 != password2:
            self._error_label.set_text(_('Passwords do not match'))
            return

        self._password1_entry.set_sensitive(False)
        self._password2_entry.set_sensitive(False)

        con = app.connections[self._account]
        con.get_module('Register').change_password(
            password1, self._on_success, self._on_error)

    def _on_success(self):
        self._success_cb(self._password1_entry.get_text())
        self.destroy()

    def _on_error(self, error_text):
        self._error_label.set_text(error_text)
        self._password1_entry.set_sensitive(True)
        self._password2_entry.set_sensitive(True)


class InvitationReceivedDialog(Gtk.ApplicationWindow):
    def __init__(self, account, event):
        Gtk.ApplicationWindow.__init__(self)
        self.set_name('InvitationReceivedDialog')
        self.set_application(app.app)
        self.set_position(Gtk.WindowPosition.CENTER)
        self.set_resizable(False)
        self.set_show_menubar(False)
        self.set_title(_('Group Chat Invitation '))

        self._ui = get_builder('groupchat_invitation_received.ui')
        self.add(self._ui.grid)
        self.show_all()
        self._ui.connect_signals(self)

        self.account = account
        self.room_jid = str(event.muc)
        self.from_ = str(event.from_)
        self.password = event.password
        self.is_continued = event.continued

        if event.from_.bareMatch(event.muc):
            contact_text = event.from_.getResource()
        else:
            contact = app.contacts.get_first_contact_from_jid(
                self.account, event.from_.getBare())
            if contact is None:
                contact_text = str(event.from_)
            else:
                contact_text = contact.get_shown_name()

        # is_continued when invited from 1:1 chat
        if self.is_continued:
            invitation_label = _('<b>%s</b> has invited you to join '
                                 'a discussion') % contact_text
        else:
            invitation_label = _('<b>%(contact)s</b> has invited you to the '
                                 'group chat <b>%(room_jid)s</b>') % \
                                {'contact': contact_text,
                                 'room_jid': self.room_jid}
        self._ui.invitation_label.set_markup(invitation_label)

        if event.reason:
            comment = GLib.markup_escape_text(event.reason)
            comment = _('Comment: %s') % comment
            self._ui.comment_label.show()
            self._ui.comment_label.set_text(comment)

    def on_message_mnemonic_activate(self, widget, group_cycling=False):
        self._ui.message_expander.set_expanded(True)

    def on_accept_button_clicked(self, widget):
        if self.is_continued:
            app.interface.join_gc_room(self.account,
                                       self.room_jid,
                                       app.nicks[self.account],
                                       self.password,
                                       is_continued=True)
        else:
            app.interface.join_gc_minimal(self.account,
                                          self.room_jid,
                                          password=self.password)
        self.destroy()

    def on_decline_button_clicked(self, widget):
        text = self._ui.decline_message.get_text()
        app.connections[self.account].get_module('MUC').decline(
            self.room_jid, self.from_, text)
        self.destroy()


class PassphraseDialog:
    """
    Class for Passphrase dialog
    """
    def __init__(self, titletext, labeltext, checkbuttontext=None,
                 ok_handler=None, cancel_handler=None, transient_for=None):
        self._ui = get_builder('passphrase_dialog.ui')
        self.window = self._ui.get_object('passphrase_dialog')
        self.passphrase = -1
        self.window.set_title(titletext)
        self._ui.message_label.set_text(labeltext)

        self.ok = False

        self.cancel_handler = cancel_handler
        self.ok_handler = ok_handler
        self._ui.ok_button.connect('clicked', self.on_okbutton_clicked)
        self._ui.cancel_button.connect('clicked', self.on_cancelbutton_clicked)

        self._ui.connect_signals(self)
        if transient_for is None:
            transient_for = app.app.get_active_window()
        self.window.set_transient_for(transient_for)
        self.window.show_all()

        self.check = bool(checkbuttontext)
        if self._ui.save_passphrase_checkbutton:
            self._ui.save_passphrase_checkbutton.set_label(checkbuttontext)
        else:
            self._ui.save_passphrase_checkbutton.hide()

    def on_okbutton_clicked(self, widget):
        if not self.ok_handler:
            return

        passph = self._ui.passphrase_entry.get_text()

        if self.check:
            checked = self._ui.save_passphrase_checkbutton.get_active()
        else:
            checked = False

        self.ok = True

        self.window.destroy()

        if isinstance(self.ok_handler, tuple):
            self.ok_handler[0](passph, checked, *self.ok_handler[1:])
        else:
            self.ok_handler(passph, checked)

    def on_cancelbutton_clicked(self, widget):
        self.window.destroy()

    def on_passphrase_dialog_destroy(self, widget):
        if self.cancel_handler and not self.ok:
            self.cancel_handler()


class NewConfirmationDialog(Gtk.MessageDialog):
    def __init__(self, title, text, sec_text, buttons,
                 modal=True, transient_for=None):
        if transient_for is None:
            transient_for = app.app.get_active_window()
        Gtk.MessageDialog.__init__(self,
                                   title=title,
                                   text=text,
                                   transient_for=transient_for,
                                   message_type=Gtk.MessageType.QUESTION,
                                   modal=modal)

        self._buttons = {}

        for button in buttons:
            self._buttons[button.response] = button
            self.add_button(button.text, button.response)
            if button.is_default:
                self.set_default_response(button.response)
            if button.action is not None:
                widget = self.get_widget_for_response(button.response)
                widget.get_style_context().add_class(button.action.value)

        self.format_secondary_markup(sec_text)

        self.connect('response', self._on_response)

    def _on_response(self, _dialog, response):
        if response == Gtk.ResponseType.DELETE_EVENT:
            # Look if DELETE_EVENT is mapped to another response
            response = self._buttons.get(response, None)
            if response is None:
                # If DELETE_EVENT was not mapped we assume CANCEL
                response = Gtk.ResponseType.CANCEL

        button = self._buttons.get(response, None)
        if button is None:
            self.destroy()
            return

        if button.callback is not None:
            button.callback(*button.args, **button.kwargs)
        self.destroy()

    def show(self):
        self.show_all()


class NewConfirmationCheckDialog(NewConfirmationDialog):
    def __init__(self, title, text, sec_text, check_text,
                 buttons, modal=True, transient_for=None):
        NewConfirmationDialog.__init__(self,
                                       title,
                                       text,
                                       sec_text,
                                       buttons,
                                       transient_for=transient_for,
                                       modal=modal)

        self._checkbutton = Gtk.CheckButton.new_with_mnemonic(check_text)
        self._checkbutton.set_can_focus(False)
        self._checkbutton.set_margin_start(30)
        self._checkbutton.set_margin_end(30)
        label = self._checkbutton.get_child()
        label.set_line_wrap(True)
        label.set_max_width_chars(50)
        label.set_halign(Gtk.Align.START)
        label.set_line_wrap_mode(Pango.WrapMode.WORD)
        label.set_margin_start(10)

        self.get_content_area().add(self._checkbutton)

    def _on_response(self, _dialog, response):
        button = self._buttons.get(response)
        if button is not None:
            button.args.insert(0, self._checkbutton.get_active())
        super()._on_response(_dialog, response)


class ShortcutsWindow:
    def __init__(self):
        transient = app.app.get_active_window()
        builder = get_builder('shortcuts_window.ui')
        self.window = builder.get_object('shortcuts_window')
        self.window.connect('destroy', self._on_window_destroy)
        self.window.set_transient_for(transient)
        self.window.show_all()
        self.window.present()

    def _on_window_destroy(self, widget):
        self.window = None