# -*- coding:utf-8 -*-
## src/features_window.py
##
## Copyright (C) 2007 Jean-Marie Traissard <jim AT lapin.org>
##                    Julien Pivotto <roidelapluie AT gmail.com>
##                    Stefan Bethge <stefan AT lanpartei.de>
##                    Stephan Erb <steve-e AT h3c.de>
## Copyright (C) 2007-2010 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
##
## 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/>.
##

import os
import sys
import gtk
import gtkgui_helpers

from common import gajim
from common import helpers
from common import kwalletbinding
from common.i18n import Q_

class FeaturesWindow:
    """
    Class for features window
    """

    def __init__(self):
        self.xml = gtkgui_helpers.get_gtk_builder('features_window.ui')
        self.window = self.xml.get_object('features_window')
        self.window.set_transient_for(gajim.interface.roster.window)
        treeview = self.xml.get_object('features_treeview')
        self.desc_label = self.xml.get_object('feature_desc_label')

        # {name: (available_function, unix_text, windows_text)}
        self.features = {
            _('SSL certificate validation'): (self.pyopenssl_available,
                _('A library used to validate server certificates to ensure a secure connection.'),
                _('Requires python-pyopenssl.'),
                _('Requires python-pyopenssl.')),
            _('Bonjour / Zeroconf'): (self.zeroconf_available,
                _('Serverless chatting with autodetected clients in a local network.'),
                _('Requires python-avahi.'),
                _('Requires pybonjour (http://o2s.csail.mit.edu/o2s-wiki/pybonjour).')),
            _('Command line'): (self.dbus_available,
                _('A script to control Gajim via commandline.'),
                _('Requires python-dbus.'),
                _('Feature not available under Windows.')),
            _('OpenGPG message encryption'): (self.gpg_available,
                _('Encrypting chat messages with gpg keys.'),
                _('Requires gpg and python-gnupg (http://code.google.com/p/python-gnupg/).'),
                _('Requires gpg.exe in PATH.')),
            _('Network-manager'): (self.network_manager_available,
                _('Autodetection of network status.'),
                _('Requires gnome-network-manager and python-dbus.'),
                _('Feature not available under Windows.')),
            _('Session Management'): (self.session_management_available,
                _('Gajim session is stored on logout and restored on login.'),
                _('Requires python-gnome2.'),
                _('Feature not available under Windows.')),
            _('Password encryption'): (self.some_keyring_available,
                _('Passwords can be stored securely and not just in plaintext.'),
                _('Requires gnome-keyring and python-gnome2-desktop, or kwalletcli.'),
                _('Feature not available under Windows.')),
            _('SRV'): (self.srv_available,
                _('Ability to connect to servers which are using SRV records.'),
                _('Requires dnsutils.'),
                _('Requires nslookup to use SRV records.')),
            _('Spell Checker'): (self.speller_available,
                _('Spellchecking of composed messages.'),
                _('Requires libgtkspell.'),
                _('Feature not available under Windows.')),
            _('Notification'): (self.notification_available,
                _('Passive popups notifying for new events.'),
                _('Requires python-notify or instead python-dbus in conjunction with notification-daemon.'),
                _('Feature not available under Windows.')),
            _('Automatic status'): (self.idle_available,
                _('Ability to measure idle time, in order to set auto status.'),
                _('Requires libxss library.'),
                _('Requires python2.5.')),
            _('LaTeX'): (self.latex_available,
                _('Transform LaTeX expressions between $$ $$.'),
                _('Requires texlive-latex-base and (dvipng or ImageMagick). You have to set \'use_latex\' to True in the Advanced Configuration Editor.'),
                _('Requires texlive-latex-base and (dvipng or ImageMagick) (All is in MikTeX). You have to set \'use_latex\' to True in the Advanced Configuration Editor.')),
            _('End to End message encryption'): (self.pycrypto_available,
                _('Encrypting chat messages.'),
                _('Requires python-crypto.'),
                _('Requires python-crypto.')),
            _('RST Generator'): (self.docutils_available,
                _('Generate XHTML output from RST code (see http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html).'),
                _('Requires python-docutils.'),
                _('Requires python-docutils.')),
            _('Audio / Video'): (self.farsight_available,
                _('Ability to start audio and video chat.'),
                _('Requires python-farsight and gstreamer-plugins-bad.'),
                _('Feature not available under Windows.')),
        }

        # name, supported
        self.model = gtk.ListStore(str, bool)
        treeview.set_model(self.model)

        col = gtk.TreeViewColumn(Q_('?features:Available'))
        treeview.append_column(col)
        cell = gtk.CellRendererToggle()
        cell.set_property('radio', True)
        col.pack_start(cell)
        col.set_attributes(cell, active = 1)

        col = gtk.TreeViewColumn(_('Feature'))
        treeview.append_column(col)
        cell = gtk.CellRendererText()
        col.pack_start(cell, expand = True)
        col.add_attribute(cell, 'text', 0)

        # Fill model
        for feature in self.features:
            func = self.features[feature][0]
            rep = func()
            self.model.append([feature, rep])

        self.model.set_sort_column_id(0, gtk.SORT_ASCENDING)

        self.xml.connect_signals(self)
        self.window.show_all()
        self.xml.get_object('close_button').grab_focus()

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

    def on_features_treeview_cursor_changed(self, widget):
        selection = widget.get_selection()
        if not selection:
            return
        rows = selection.get_selected_rows()[1]
        if not rows:
            return
        path = rows[0]
        feature = self.model[path][0].decode('utf-8')
        text = self.features[feature][1] + '\n'
        if os.name == 'nt':
            text = text + self.features[feature][3]
        else:
            text = text + self.features[feature][2]
        self.desc_label.set_text(text)

    def pyopenssl_available(self):
        try:
            import OpenSSL.SSL
            import OpenSSL.crypto
        except Exception:
            return False
        return True

    def zeroconf_available(self):
        return gajim.HAVE_ZEROCONF

    def dbus_available(self):
        if os.name == 'nt':
            return False
        from common import dbus_support
        return dbus_support.supported

    def gpg_available(self):
        return gajim.HAVE_GPG

    def network_manager_available(self):
        if os.name == 'nt':
            return False
        import network_manager_listener
        return network_manager_listener.supported

    def session_management_available(self):
        if os.name == 'nt':
            return False
        try:
            __import__('gnome.ui')
        except Exception:
            return False
        return True

    def some_keyring_available(self):
        if os.name == 'nt':
            return False
        if kwalletbinding.kwallet_available():
            return True
        try:
            __import__('gnomekeyring')
        except Exception:
            return False
        return True

    def srv_available(self):
        if os.name == 'nt':
            return True
        return helpers.is_in_path('nslookup')

    def speller_available(self):
        if os.name == 'nt':
            return False
        try:
            __import__('gtkspell')
        except ImportError:
            return False
        return True

    def notification_available(self):
        if os.name == 'nt':
            return False
        from common import dbus_support
        if self.dbus_available() and dbus_support.get_notifications_interface():
            return True
        try:
            __import__('pynotify')
        except Exception:
            return False
        return True

    def idle_available(self):
        from common import sleepy
        return sleepy.SUPPORTED

    def latex_available(self):
        from common import latex
        return latex.check_for_latex_support()

    def pycrypto_available(self):
        return gajim.HAVE_PYCRYPTO

    def docutils_available(self):
        try:
            __import__('docutils')
        except Exception:
            return False
        return True

    def farsight_available(self):
        return gajim.HAVE_FARSIGHT