# Copyright (C) 2006, Red Hat, Inc.
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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.
#
# 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 St, Fifth Floor, Boston, MA  02110-1301  USA

from gi.repository import Gtk
from gi.repository import GConf

from sugar3.graphics.icon import Icon
from sugar3.graphics import style
from sugar3.graphics.xocolor import XoColor


class KeepIcon(Gtk.ToggleButton):
    __gtype_name__ = 'SugarKeepIcon'

    def __init__(self):
        Gtk.ToggleButton.__init__(self)
        self.set_relief(Gtk.ReliefStyle.NONE)
        self.set_focus_on_click(False)

        self._icon = Icon(icon_name='emblem-favorite',
                          pixel_size=style.SMALL_ICON_SIZE)
        self.set_image(self._icon)
        self.connect('toggled', self.__toggled_cb)
        self.connect('leave-notify-event', self.__leave_notify_event_cb)
        self.connect('enter-notify-event', self.__enter_notify_event_cb)
        self.connect('button-press-event', self.__button_press_event_cb)
        self.connect('button-release-event', self.__button_release_event_cb)

        client = GConf.Client.get_default()
        self._xo_color = XoColor(client.get_string(
                '/desktop/sugar/user/color'))

    def do_get_preferred_width(self):
        return 0, style.GRID_CELL_SIZE

    def do_get_preferred_height(self):
        return 0, style.GRID_CELL_SIZE

    def __button_press_event_cb(self, widget, event):
        # We need to use a custom CSS class because in togglebuttons
        # the 'active' class doesn't only match the button press, they
        # can be left in the active state.
        style_context = self.get_style_context()
        style_context.add_class('toggle-press')

    def __button_release_event_cb(self, widget, event):
        style_context = self.get_style_context()
        style_context.remove_class('toggle-press')

    def __toggled_cb(self, widget):
        if self.get_active():
            self._icon.props.xo_color = self._xo_color
        else:
            self._icon.props.stroke_color = style.COLOR_BUTTON_GREY.get_svg()
            self._icon.props.fill_color = style.COLOR_TRANSPARENT.get_svg()

    def __enter_notify_event_cb(self, icon, event):
        if not self.get_active():
            self._icon.props.xo_color = self._xo_color

    def __leave_notify_event_cb(self, icon, event):
        if not self.get_active():
            self._icon.props.stroke_color = style.COLOR_BUTTON_GREY.get_svg()
            self._icon.props.fill_color = style.COLOR_TRANSPARENT.get_svg()