# Copyright (C) 2009, Tutorius.org
# Greatly influenced by sugar/activity/namingalert.py
#
# 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

import gtk
import gobject
import hippo
import gconf

from gettext import gettext as _

class WidgetIdentifier(gtk.Window):
    """
    Tool that allows identifying widgets
    """
    __gtype_name__ = 'TutoriusWidgetIdentifier'

    def __init__(self, activity):
        gtk.Window.__init__(self)
        
        self._activity = activity
        self._handlers = []

        self.set_decorated(False)
        self.set_resizable(False)
        self.set_modal(False)

        self.connect('realize', self.__realize_cb)

        self._expander = gtk.Expander(_("Widget Identifier"))
        self._expander.set_expanded(True)
        self.add(self._expander)
        self._expander.connect("notify::expanded", self.__expander_cb)

        self._expander.show()

        vbox = gtk.VBox()
        self._expander.add(vbox)
        vbox.show()


        self.logview = gtk.TextView()
        self.logview.set_editable(False)
        self.logview.set_cursor_visible(False)
        self.logview.set_wrap_mode(gtk.WRAP_NONE)
        self._textbuffer = self.logview.get_buffer()

        sw = gtk.ScrolledWindow()
        sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        sw.add(self.logview)
        self.logview.show()

        vbox.pack_start(sw)
        sw.show()

        from sugar.tutorius.gtkutils import register_signals_numbered
        self._handlers = register_signals_numbered(self._activity, self._handle_events)

    def __expander_cb(self, *args): 
        if self._expander.get_expanded():
            self.__move_expanded()
        else:
            self.__move_collapsed()

    def __move_expanded(self):
        width = 400
        height = 300
        ww = gtk.gdk.screen_width()
        wh = gtk.gdk.screen_height()

        self.set_size_request(width, height)
        self.move((ww-width)/2, wh-height)

    def __move_collapsed(self):
        width = 150
        height = 40
        ww = gtk.gdk.screen_width()
        wh = gtk.gdk.screen_height()

        self.set_size_request(width, height)
        self.move((ww-width)/2, wh-height)

    def __realize_cb(self, widget):
        self.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)
        self.window.set_accept_focus(True)
        self.__move_expanded()

    def _disconnect_handlers(self):
        for widget, handlerid in self._handlers:
            widget.handler_disconnect(handlerid)
        self._handlers = []

    def _handle_events(self,*args):
        sig, name = args[-1]
        text = "\r\n".join(
            (["%s event received from %s" % (sig, name)] + 
             self._textbuffer.get_text(*(self._textbuffer.get_bounds())
             ).split("\r\n"))[:80]
        )
        self._textbuffer.set_text(text)