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gajim_themes_window.py

##    gajim_themes_window.py
##
## Contributors for this file:
##    - Yann Le Boulanger <asterix@lagaule.org>
##    - Nikos Kouremenos <kourem@gmail.com>
##    - Dimitur Kirov <dkirov@gmail.com>
##
## Copyright (C) 2003-2004 Yann Le Boulanger <asterix@lagaule.org>
##                         Vincent Hanquez <tab@snarc.org>
## Copyright (C) 2005 Yann Le Boulanger <asterix@lagaule.org>
##                    Vincent Hanquez <tab@snarc.org>
##                    Nikos Kouremenos <nkour@jabber.org>
##                    Dimitur Kirov <dkirov@gmail.com>
##                    Travis Shirk <travis@pobox.com>
##                    Norman Rasmussen <norman@rasmussen.co.za>
##
## This program 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 2 only.
##
## This program 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.
##

import gtk
import gtk.glade
import pango
import dialogs
import gtkgui_helpers

from common import gajim
from common import i18n
_ = i18n._
APP = i18n.APP
gtk.glade.bindtextdomain (APP, i18n.DIR)
gtk.glade.textdomain (APP)

GTKGUI_GLADE = 'gtkgui.glade'

class GajimThemesWindow:

      def __init__(self):
            self.xml = gtk.glade.XML(GTKGUI_GLADE, 'gajim_themes_window', APP)
            self.window = self.xml.get_widget('gajim_themes_window')
            
            self.options = ['account', 'group', 'contact', 'banner']
            self.options_combobox = self.xml.get_widget('options_combobox')
            self.textcolor_checkbutton = self.xml.get_widget('textcolor_checkbutton')
            self.background_checkbutton = self.xml.get_widget('background_checkbutton')
            self.textfont_checkbutton = self.xml.get_widget('textfont_checkbutton')
            self.text_colorbutton = self.xml.get_widget('text_colorbutton')
            self.background_colorbutton = self.xml.get_widget('background_colorbutton')
            self.text_fontbutton = self.xml.get_widget('text_fontbutton')
            self.bold_togglebutton = self.xml.get_widget('bold_togglebutton')
            self.italic_togglebutton = self.xml.get_widget('italic_togglebutton')
            self.themes_tree = self.xml.get_widget('themes_treeview')
            self.theme_options_vbox = self.xml.get_widget('theme_options_vbox')
            self.colorbuttons = {}
            for chatstate in ('active', 'inactive', 'composing', 'paused', 'gone',
            'muc_msg', 'muc_directed_msg'):
                  self.colorbuttons[chatstate] = self.xml.get_widget(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.set_attributes(renderer, text = 0)
            renderer.connect('edited', self.on_theme_cell_edited)
            renderer.set_property('editable', True)
            self.current_theme = gajim.config.get('roster_theme')
            self.no_update = False
            self.fill_themes_treeview()
            self.current_option = self.options[0]
            self.set_theme_options(self.current_theme, self.current_option)
            
            self.xml.signal_autoconnect(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):
            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).decode('utf-8')
            new_name = new_name.decode('utf-8')
            if old_name == new_name:
                  return
            new_config_name = new_name.replace(' ', '_')
            if new_config_name in gajim.config.get_per('themes'):
                  return
            gajim.config.add_per('themes', new_config_name)
            # Copy old theme values
            old_config_name = old_name.replace(' ', '_')
            properties = ['textcolor', 'bgcolor', 'font', 'fontattrs']
            gajim.config.add_per('themes', new_config_name)
            for option in self.options:
                  for property in properties:
                        option_name = option + property
                        gajim.config.set_per('themes', new_config_name, option_name,
                              gajim.config.get_per('themes', old_config_name, option_name))
            gajim.config.del_per('themes', old_config_name)
            if old_config_name == gajim.config.get('roster_theme'):
                  gajim.config.set('roster_theme', new_config_name)
            model.set_value(iter, 0, new_name)
            self.current_theme = new_name

      def fill_themes_treeview(self):
            self.xml.get_widget('remove_button').set_sensitive(False)
            self.theme_options_vbox.set_sensitive(False)
            model = self.themes_tree.get_model()
            model.clear()
            for config_theme in gajim.config.get_per('themes'):
                  theme = config_theme.replace('_', ' ')
                  iter = model.append([theme])
                  if gajim.config.get('roster_theme') == config_theme:
                        self.themes_tree.get_selection().select_iter(iter)
                        self.xml.get_widget('remove_button').set_sensitive(True)
                        self.theme_options_vbox.set_sensitive(True)
      
      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)
                  return
            self.xml.get_widget('remove_button').set_sensitive(True)
            self.theme_options_vbox.set_sensitive(True)
            self.current_theme = model.get_value(iter, 0).decode('utf-8')
            self.current_theme = self.current_theme.replace(' ', '_')
            self.set_theme_options(self.current_theme)

      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 + unicode(i) in gajim.config.get_per('themes'):
                  i += 1
            model.set_value(iter, 0, theme_name + unicode(i))
            gajim.config.add_per('themes', theme_name_ns + unicode(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 == gajim.config.get('roster_theme'):
                  dialogs.ErrorDialog(
                        _('You cannot delete your current theme'),
                  _('Please first choose another for your current theme.'))
                  return
            self.theme_options_vbox.set_sensitive(False)
            gajim.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 = gajim.config.get_per('themes', theme, option + 'textcolor')
            if textcolor:
                  state = True
                  self.text_colorbutton.set_color(gtk.gdk.color_parse(textcolor))
            else:
                  state = False
            self.textcolor_checkbutton.set_active(state)
            self.text_colorbutton.set_sensitive(state)
            bgcolor = gajim.config.get_per('themes', theme, option + 'bgcolor')
            if bgcolor:
                  state = True
                  self.background_colorbutton.set_color(gtk.gdk.color_parse(
                        bgcolor))
            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 = gajim.config.get_per('themes', theme, option + 'font')
            font_attrs = gajim.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
            gajim.interface.roster.change_roster_style(None)

            for chatstate in ('active', 'inactive', 'composing', 'paused', 'gone',
            'muc_msg', 'muc_directed_msg'):
                  color = gajim.config.get_per('themes', theme, 'state_' + chatstate + \
                        '_color')
                  self.colorbuttons[chatstate].set_color(gtk.gdk.color_parse(color))
            
      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
            gajim.config.set_per('themes', self.current_theme, 
                  begin_option + option, color_string)
            # use faster functions for this
            if self.current_option == 'banner':
                  gajim.interface.roster.repaint_themed_widgets()
                  gajim.interface.save_config()
                  return
            if self.no_update:
                  return
            gajim.interface.roster.change_roster_style(self.current_option)
            gajim.interface.save_config()
            
      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 = ''
            gajim.config.set_per('themes', self.current_theme, 
                  self.current_option + 'font', font_string)
            font_attrs = self._get_font_attrs()
            gajim.config.set_per('themes', self.current_theme, 
                  self.current_option + 'fontattrs', font_attrs)
            # use faster functions for this
            if self.current_option == 'banner':
                  gajim.interface.roster.repaint_themed_widgets()
            if self.no_update:
                  return
            gajim.interface.roster.change_roster_style(self.current_option)
            gajim.interface.save_config()
      
      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_active_colorbutton_color_set(self, widget):
            self.no_update = True
            self._set_color(True, widget, 'state_active_color')
            self.no_update = False

      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

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