# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2011 Nick Hall
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# $Id$
#

from gen.plug import Gramplet
from gui.widgets import Photo
from gen.ggettext import gettext as _
from PlaceUtils import conv_lat_lon
import Utils
import gtk
import pango

class PlaceDetails(Gramplet):
    """
    Displays details for a place.
    """
    def init(self):
        self.gui.WIDGET = self.build_gui()
        self.gui.get_container_widget().remove(self.gui.textview)
        self.gui.get_container_widget().add_with_viewport(self.gui.WIDGET)

    def build_gui(self):
        """
        Build the GUI interface.
        """
        self.top = gtk.HBox()
        vbox = gtk.VBox()
        self.photo = Photo()
        self.title = gtk.Label()
        self.title.set_alignment(0, 0)
        self.title.modify_font(pango.FontDescription('sans bold 12'))
        vbox.pack_start(self.title, fill=True, expand=False, padding=7)
        self.table = gtk.Table(1, 2)
        vbox.pack_start(self.table, fill=True, expand=False)
        self.top.pack_start(self.photo, fill=True, expand=False, padding=5)
        self.top.pack_start(vbox, fill=True, expand=False, padding=10)
        self.top.show_all()
        return self.top

    def add_row(self, title, value):
        """
        Add a row to the table.
        """
        label = gtk.Label(title + ':')
        label.set_alignment(1, 0)
        label.show()
        value = gtk.Label(value)
        value.set_alignment(0, 0)
        value.show()
        rows = self.table.get_property('n-rows')
        rows += 1
        self.table.resize(rows, 2)
        self.table.attach(label, 0, 1, rows, rows + 1, xoptions=gtk.FILL,
                                                       xpadding=10)
        self.table.attach(value, 1, 2, rows, rows + 1)
        
    def clear_table(self):
        """
        Remove all the rows from the table.
        """
        map(self.table.remove, self.table.get_children())
        self.table.resize(1, 2)

    def db_changed(self):
        self.dbstate.db.connect('place-update', self.update)
        self.connect_signal('Place', self.update)
        self.update()

    def update_has_data(self): 
        active_handle = self.get_active('Person')
        active_person = self.dbstate.db.get_person_from_handle(active_handle)
        self.set_has_data(active_person is not None)

    def main(self):
        active_handle = self.get_active('Place')
        place = self.dbstate.db.get_place_from_handle(active_handle)
        self.top.hide()
        if place:
            self.display_place(place)
            self.set_has_data(True)
        else:
            self.display_empty()
            self.set_has_data(False)
        self.top.show()

    def display_place(self, place):
        """
        Display details of the active place.
        """
        self.load_place_image(place)
        self.title.set_text(place.get_title())

        self.clear_table()
        self.display_location(place.get_main_location())
        self.display_separator()
        lat, lon = conv_lat_lon(place.get_latitude(),
                                place.get_longitude(),
                                format='DEG')
        if lat:
            self.add_row(_('Latitude'), lat)
        if lon:
            self.add_row(_('Longitude'), lat)

    def display_location(self, location):
        """
        Display a location.
        """
        lines = [line for line in location.get_text_data_list()[:-1] if line]
        self.add_row(_('Location'), '\n'.join(lines))

    def display_empty(self):
        """
        Display empty details when no repository is selected.
        """
        self.photo.set_image(None)
        self.title.set_text('')
        self.clear_table()

    def display_separator(self):
        """
        Display an empty row to separate groupd of entries.
        """
        label = gtk.Label('')
        label.modify_font(pango.FontDescription('sans 4'))
        label.show()
        rows = self.table.get_property('n-rows')
        rows += 1
        self.table.resize(rows, 2)
        self.table.attach(label, 0, 1, rows, rows + 1, xoptions=gtk.FILL)

    def load_place_image(self, place):
        """
        Load the primary image if it exists.
        """
        media_list = place.get_media_list()
        if media_list:
            media_ref = media_list[0]
            object_handle = media_ref.get_reference_handle()
            obj = self.dbstate.db.get_object_from_handle(object_handle)
            full_path = Utils.media_path_full(self.dbstate.db, obj.get_path())
            mime_type = obj.get_mime_type()
            if mime_type and mime_type.startswith("image"):
                self.photo.set_image(full_path, mime_type,
                                     media_ref.get_rectangle())
            else:
                self.photo.set_image(None)
        else:
            self.photo.set_image(None)