# -*- coding:utf-8 -*-
## src/gajim_themes_window.py
##
## Copyright (C) 2003-2014 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2005-2006 Dimitur Kirov <dkirov AT gmail.com>
##                         Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2006 Jean-Marie Traissard <jim AT lapin.org>
## Copyright (C) 2007 Stephan Erb <steve-e AT h3c.de>
##
## 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 gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import Pango
from gajim import dialogs
from gajim import gtkgui_helpers

from gajim.common import app

class GajimThemesWindow:

    def __init__(self):
        self.xml = gtkgui_helpers.get_gtk_builder('gajim_themes_window.ui')
        self.window = self.xml.get_object('gajim_themes_window')
        self.window.set_transient_for(app.interface.instances[
            'preferences'].window)

        self.options = ['account', 'group', 'contact', 'banner']
        self.options_combobox = self.xml.get_object('options_combobox')
        self.textcolor_checkbutton = self.xml.get_object('textcolor_checkbutton')
        self.background_checkbutton = self.xml.get_object('background_checkbutton')
        self.textfont_checkbutton = self.xml.get_object('textfont_checkbutton')
        self.text_colorbutton = self.xml.get_object('text_colorbutton')
        self.background_colorbutton = self.xml.get_object('background_colorbutton')
        self.text_fontbutton = self.xml.get_object('text_fontbutton')
        self.bold_togglebutton = self.xml.get_object('bold_togglebutton')
        self.italic_togglebutton = self.xml.get_object('italic_togglebutton')
        self.themes_tree = self.xml.get_object('themes_treeview')
        self.theme_options_vbox = self.xml.get_object('theme_options_vbox')
        self.theme_options_table = self.xml.get_object('theme_options_table')
        self.colorbuttons = {}
        for chatstate in ('inactive', 'composing', 'paused', 'gone',
        'muc_msg', 'muc_directed_msg'):
            self.colorbuttons[chatstate] = self.xml.get_object(chatstate + \
                    '_colorbutton')
        model = Gtk.ListStore(str)
        self.themes_tree.set_model(model)
        col = Gtk.TreeViewColumn(_('Theme'))
        self.themes_tree.append_column(col)
        renderer = Gtk.CellRendererText()
        col.pack_start(renderer, True)
        col.add_attribute(renderer, 'text', 0)
        renderer.connect('edited', self.on_theme_cell_edited)
        renderer.set_property('editable', True)
        self.current_theme = app.config.get('roster_theme')
        self.no_update = False
        self.fill_themes_treeview()
        self.select_active_theme()
        self.current_option = self.options[0]
        self.set_theme_options(self.current_theme, self.current_option)

        self.xml.connect_signals(self)
        self.window.connect('delete-event', self.on_themese_window_delete_event)
        self.themes_tree.get_selection().connect('changed',
                        self.selection_changed)
        self.window.show_all()

    def on_themese_window_delete_event(self, widget, event):
        self.window.hide()
        return True # do NOT destroy the window

    def on_close_button_clicked(self, widget):
        if 'preferences' in app.interface.instances:
            app.interface.instances['preferences'].update_theme_list()
        self.window.hide()

    def on_theme_cell_edited(self, cell, row, new_name):
        model = self.themes_tree.get_model()
        iter_ = model.get_iter_from_string(row)
        old_name = model.get_value(iter_, 0)
        if old_name == new_name:
            return
        if old_name == 'default':
            dialogs.ErrorDialog(
                _('You cannot make changes to the default theme'),
            	_('Please create a new clean theme.'))
            return
        new_config_name = new_name.replace(' ', '_')
        if new_config_name in app.config.get_per('themes'):
            return
        app.config.add_per('themes', new_config_name)
        # Copy old theme values
        old_config_name = old_name.replace(' ', '_')
        properties = ['textcolor', 'bgcolor', 'font', 'fontattrs']
        app.config.add_per('themes', new_config_name)
        for option in self.options:
            for property_ in properties:
                option_name = option + property_
                app.config.set_per('themes', new_config_name, option_name,
                        app.config.get_per('themes', old_config_name, option_name))
        app.config.del_per('themes', old_config_name)
        if old_config_name == app.config.get('roster_theme'):
            app.config.set('roster_theme', new_config_name)
        model.set_value(iter_, 0, new_name)
        self.current_theme = new_name

    def fill_themes_treeview(self):
        model = self.themes_tree.get_model()
        model.clear()
        for config_theme in app.config.get_per('themes'):
            theme = config_theme.replace('_', ' ')
            model.append([theme])

    def select_active_theme(self):
        model = self.themes_tree.get_model()
        iter_ = model.get_iter_first()
        active_theme = app.config.get('roster_theme').replace('_', ' ')
        while iter_:
            theme = model[iter_][0]
            if theme == active_theme:
                self.themes_tree.get_selection().select_iter(iter_)
                if active_theme == 'default':
                    self.xml.get_object('remove_button').set_sensitive(False)
                    self.theme_options_vbox.set_sensitive(False)
                    self.theme_options_table.set_sensitive(False)
                else:
                    self.xml.get_object('remove_button').set_sensitive(True)
                    self.theme_options_vbox.set_sensitive(True)
                    self.theme_options_table.set_sensitive(True)
                break
            iter_ = model.iter_next(iter_)

    def selection_changed(self, widget = None):
        (model, iter_) = self.themes_tree.get_selection().get_selected()
        selected = self.themes_tree.get_selection().get_selected_rows()
        if not iter_ or selected[1] == []:
            self.theme_options_vbox.set_sensitive(False)
            self.theme_options_table.set_sensitive(False)
            return
        self.current_theme = model.get_value(iter_, 0)
        self.current_theme = self.current_theme.replace(' ', '_')
        self.set_theme_options(self.current_theme)
        if self.current_theme == 'default':
            self.xml.get_object('remove_button').set_sensitive(False)
            self.theme_options_vbox.set_sensitive(False)
            self.theme_options_table.set_sensitive(False)
        else:
            self.xml.get_object('remove_button').set_sensitive(True)
            self.theme_options_vbox.set_sensitive(True)
            self.theme_options_table.set_sensitive(True)

    def on_add_button_clicked(self, widget):
        model = self.themes_tree.get_model()
        iter_ = model.append()
        i = 0
        # don't confuse translators
        theme_name = _('theme name')
        theme_name_ns = theme_name.replace(' ', '_')
        while theme_name_ns + str(i) in app.config.get_per('themes'):
            i += 1
        model.set_value(iter_, 0, theme_name + str(i))
        app.config.add_per('themes', theme_name_ns + str(i))
        self.themes_tree.get_selection().select_iter(iter_)
        col = self.themes_tree.get_column(0)
        path = model.get_path(iter_)
        self.themes_tree.set_cursor(path, col, True)

    def on_remove_button_clicked(self, widget):
        (model, iter_) = self.themes_tree.get_selection().get_selected()
        if not iter_:
            return
        if self.current_theme == app.config.get('roster_theme'):
            dialogs.ErrorDialog(
                _('You cannot delete your current theme'),
                _('Pick another theme to use first.'))
            return
        self.theme_options_vbox.set_sensitive(False)
        self.theme_options_table.set_sensitive(False)
        self.xml.get_object('remove_button').set_sensitive(False)
        app.config.del_per('themes', self.current_theme)
        model.remove(iter_)

    def set_theme_options(self, theme, option = 'account'):
        self.no_update = True
        self.options_combobox.set_active(self.options.index(option))
        textcolor = app.config.get_per('themes', theme, option + 'textcolor')
        if textcolor:
            state = True
            rgba = Gdk.RGBA()
            rgba.parse(textcolor)
            self.text_colorbutton.set_rgba(rgba)
        else:
            state = False
        self.textcolor_checkbutton.set_active(state)
        self.text_colorbutton.set_sensitive(state)
        bgcolor = app.config.get_per('themes', theme, option + 'bgcolor')
        if bgcolor:
            state = True
            rgba = Gdk.RGBA()
            rgba.parse(bgcolor)
            self.background_colorbutton.set_rgba(rgba)
        else:
            state = False
        self.background_checkbutton.set_active(state)
        self.background_colorbutton.set_sensitive(state)

        # get the font name before we set widgets and it will not be overriden
        font_name = app.config.get_per('themes', theme, option + 'font')
        font_attrs = app.config.get_per('themes', theme, option + 'fontattrs')
        self._set_font_widgets(font_attrs)
        if font_name:
            state = True
            self.text_fontbutton.set_font_name(font_name)
        else:
            state = False
        self.textfont_checkbutton.set_active(state)
        self.text_fontbutton.set_sensitive(state)
        self.no_update = False
        app.interface.roster.change_roster_style(None)

        for chatstate in ('inactive', 'composing', 'paused', 'gone',
        'muc_msg', 'muc_directed_msg'):
            color = app.config.get_per('themes', theme, 'state_' + chatstate + \
                    '_color')
            rgba = Gdk.RGBA()
            rgba.parse(color)
            self.colorbuttons[chatstate].set_rgba(rgba)

    def on_textcolor_checkbutton_toggled(self, widget):
        state = widget.get_active()
        self.text_colorbutton.set_sensitive(state)
        self._set_color(state, self.text_colorbutton,
                'textcolor')

    def on_background_checkbutton_toggled(self, widget):
        state = widget.get_active()
        self.background_colorbutton.set_sensitive(state)
        self._set_color(state, self.background_colorbutton,
                'bgcolor')

    def on_textfont_checkbutton_toggled(self, widget):
        self.text_fontbutton.set_sensitive(widget.get_active())
        self._set_font()

    def on_text_colorbutton_color_set(self, widget):
        self._set_color(True, widget, 'textcolor')

    def on_background_colorbutton_color_set(self, widget):
        self._set_color(True, widget, 'bgcolor')

    def on_text_fontbutton_font_set(self, widget):
        self._set_font()

    def on_options_combobox_changed(self, widget):
        index = self.options_combobox.get_active()
        if index == -1:
            return
        self.current_option = self.options[index]
        self.set_theme_options(self.current_theme,
                self.current_option)

    def on_bold_togglebutton_toggled(self, widget):
        if not self.no_update:
            self._set_font()

    def on_italic_togglebutton_toggled(self, widget):
        if not self.no_update:
            self._set_font()

    def _set_color(self, state, widget, option):
        """
        Set color value in prefs and update the UI
        """
        if state:
            color = widget.get_color()
            color_string = gtkgui_helpers.make_color_string(color)
        else:
            color_string = ''
        begin_option = ''
        if not option.startswith('state'):
            begin_option = self.current_option
        app.config.set_per('themes', self.current_theme,
                begin_option + option, color_string)
        # use faster functions for this
        if self.current_option == 'banner':
            app.interface.roster.repaint_themed_widgets()
            return
        if self.no_update:
            return
        app.interface.roster.change_roster_style(self.current_option)

    def _set_font(self):
        """
        Set font value in prefs and update the UI
        """
        state = self.textfont_checkbutton.get_active()
        if state:
            font_string = self.text_fontbutton.get_font_name()
        else:
            font_string = ''
        app.config.set_per('themes', self.current_theme,
                self.current_option + 'font', font_string)
        font_attrs = self._get_font_attrs()
        app.config.set_per('themes', self.current_theme,
                self.current_option + 'fontattrs', font_attrs)
        # use faster functions for this
        if self.current_option == 'banner':
            app.interface.roster.repaint_themed_widgets()
        if self.no_update:
            return
        app.interface.roster.change_roster_style(self.current_option)

    def _toggle_font_widgets(self, font_props):
        """
        Toggle font buttons with the bool values of font_props tuple
        """
        self.bold_togglebutton.set_active(font_props[0])
        self.italic_togglebutton.set_active(font_props[1])

    def _get_font_description(self):
        """
        Return a FontDescription from togglebuttons states
        """
        fd = Pango.FontDescription()
        if self.bold_togglebutton.get_active():
            fd.set_weight(Pango.Weight.BOLD)
        if self.italic_togglebutton.get_active():
            fd.set_style(Pango.Style.ITALIC)
        return fd

    def _set_font_widgets(self, font_attrs):
        """
        Set the correct toggle state of font style buttons by a font string of
        type 'BI'
        """
        font_props = [False, False, False]
        if font_attrs:
            if font_attrs.find('B') != -1:
                font_props[0] = True
            if font_attrs.find('I') != -1:
                font_props[1] = True
        self._toggle_font_widgets(font_props)

    def _get_font_attrs(self):
        """
        Get a string with letters of font attribures: 'BI'
        """
        attrs = ''
        if self.bold_togglebutton.get_active():
            attrs += 'B'
        if self.italic_togglebutton.get_active():
            attrs += 'I'
        return attrs


    def _get_font_props(self, font_name):
        """
        Get tuple of font properties: weight, style
        """
        font_props = [False, False, False]
        font_description = Pango.FontDescription(font_name)
        if font_description.get_weight() != Pango.Weight.NORMAL:
            font_props[0] = True
        if font_description.get_style() != Pango.Style.ITALIC:
            font_props[1] = True
        return font_props

    def on_inactive_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_inactive_color')
        self.no_update = False

    def on_composing_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_composing_color')
        self.no_update = False

    def on_paused_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_paused_color')
        self.no_update = False

    def on_gone_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_gone_color')
        self.no_update = False

    def on_muc_msg_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_muc_msg_color')
        self.no_update = False

    def on_muc_directed_msg_colorbutton_color_set(self, widget):
        self.no_update = True
        self._set_color(True, widget, 'state_muc_directed_msg_color')
        self.no_update = False