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# Copyright (C) 2006, Red Hat, Inc.
# Copyright (C) 2011, One Laptop Per Child
# Copyright (C) 2009, Tomeu Vizoso, Simon Schampijer
#
# 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 GObject
from gi.repository import Gtk
from sugar3.graphics.icon import Icon
class TabAdd(Gtk.HBox):
__gtype_name__ = 'TabAdd'
__gsignals__ = {
'tab-added': (GObject.SignalFlags.RUN_FIRST,
None,
([])),
}
def __init__(self):
GObject.GObject.__init__(self)
add_tab_icon = Icon(icon_name='add')
button = Gtk.Button()
button.props.relief = Gtk.ReliefStyle.NONE
button.props.focus_on_click = False
icon_box = Gtk.HBox()
icon_box.pack_start(add_tab_icon, True, False, 0)
button.add(icon_box)
button.connect('clicked', self.__button_clicked_cb)
button.set_name('browse-tab-add')
self.pack_start(button, True, True, 0)
add_tab_icon.show()
icon_box.show()
button.show()
def __button_clicked_cb(self, button):
self.emit('tab-added')
class BrowserNotebook(Gtk.Notebook):
__gtype_name__ = 'BrowserNotebook'
"""Handle an extra tab at the end with an Add Tab button."""
def __init__(self):
GObject.GObject.__init__(self)
self._switch_handler = self.connect('switch-page',
self.__on_switch_page)
tab_add = TabAdd()
tab_add.connect('tab-added', self.on_add_tab)
empty_page = Gtk.HBox()
self.append_page(empty_page, tab_add)
empty_page.show()
def on_add_tab(self, obj):
raise NotImplementedError("implement this in the subclass")
def __on_switch_page(self, notebook, page, page_num):
"""Don't switch to the extra tab at the end."""
if page_num > 0 and page_num == Gtk.Notebook.get_n_pages(self) - 1:
self.handler_block(self._switch_handler)
self.set_current_page(-1)
self.handler_unblock(self._switch_handler)
self.connect('switch-page', self.__on_switch_page)
self.stop_emission("switch-page")
def get_n_pages(self):
"""Skip the extra tab at the end on the pages count."""
return Gtk.Notebook.get_n_pages(self) - 1
def append_page(self, page, label):
"""Append keeping the extra tab at the end."""
return self.insert_page(page, label, self.get_n_pages())
def set_current_page(self, number):
"""If indexing from the end, skip the extra tab."""
if number < 0:
number = self.get_n_pages() - 1
Gtk.Notebook.set_current_page(self, number)
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