detailview.py

   1 # Copyright (C) 2007, One Laptop Per Child
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software
  15 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  16
  17 import logging
  18 from gettext import gettext as _
  19
  20 import gobject
  21 import gtk
  22 import hippo
  23
  24 from sugar.graphics import style
  25 from sugar.graphics.icon import CanvasIcon
  26 from sugar.graphics.toolbutton import ToolButton
  27 from sugar.datastore import datastore
  28
  29 from expandedentry import ExpandedEntry
  30 from keepicon import KeepIcon
  31
  32 class DetailView(gtk.VBox):
  33     __gtype_name__ = 'DetailView'
  34
  35     __gproperties__ = {
  36         'jobject'        : (object, None, None,
  37                             gobject.PARAM_READWRITE)
  38     }
  39
  40     __gsignals__ = {
  41         'go-back-clicked': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
  42     }
  43
  44     def __init__(self, **kwargs):
  45         self._jobject = None
  46         self._expanded_entry = None
  47
  48         canvas = hippo.Canvas()
  49
  50         self._root = hippo.CanvasBox()
  51         self._root.props.background_color = style.COLOR_PANEL_GREY.get_int()
  52         canvas.set_root(self._root)
  53
  54         back_bar = BackBar()
  55         back_bar.connect('button-release-event',
  56                          self.__back_bar_release_event_cb)
  57         self._root.append(back_bar)
  58
  59         gobject.GObject.__init__(self, **kwargs)
  60
  61         self.pack_start(canvas)
  62         canvas.show()
  63
  64     def _fav_icon_activated_cb(self, fav_icon):
  65         keep = not self._expanded_entry.get_keep()
  66         self._expanded_entry.set_keep(keep)
  67         fav_icon.props.keep = keep
  68
  69     def __back_bar_release_event_cb(self, back_bar, event):
  70         self.emit('go-back-clicked')
  71         return False
  72
  73     def _update_view(self):
  74         if self._expanded_entry:
  75             self._root.remove(self._expanded_entry)
  76
  77             # Work around pygobject bug #479227
  78             self._expanded_entry.remove_all()
  79             import gc
  80             gc.collect()
  81         if self._jobject:
  82             self._expanded_entry = ExpandedEntry(self._jobject.object_id)
  83             self._root.append(self._expanded_entry, hippo.PACK_EXPAND)
  84
  85     def refresh(self):
  86         logging.debug('DetailView.refresh')
  87         if self._jobject:
  88             self._jobject = datastore.get(self._jobject.object_id)
  89             self._update_view()
  90
  91     def do_set_property(self, pspec, value):
  92         if pspec.name == 'jobject':
  93             self._jobject = value
  94             self._update_view()
  95         else:
  96             raise AssertionError
  97
  98     def do_get_property(self, pspec):
  99         if pspec.name == 'jobject':
 100             return self._jobject
 101         else:
 102             raise AssertionError
 103
 104
 105 class BackBar(hippo.CanvasBox):
 106     def __init__(self):
 107         hippo.CanvasBox.__init__(self,
 108                 orientation=hippo.ORIENTATION_HORIZONTAL,
 109                 border=style.LINE_WIDTH,
 110                 background_color=style.COLOR_PANEL_GREY.get_int(),
 111                 border_color=style.COLOR_SELECTION_GREY.get_int(),
 112                 padding=style.DEFAULT_PADDING,
 113                 padding_left=style.DEFAULT_SPACING,
 114                 spacing=style.DEFAULT_SPACING)
 115
 116         icon = CanvasIcon(icon_name='go-previous',
 117                           size=style.SMALL_ICON_SIZE,
 118                           fill_color=style.COLOR_TOOLBAR_GREY.get_svg())
 119         self.append(icon)
 120
 121         label = hippo.CanvasText(text=_('Back'),
 122                                  font_desc=style.FONT_NORMAL.get_pango_desc())
 123         self.append(label)
 124
 125         if gtk.widget_get_default_direction() == gtk.TEXT_DIR_RTL:
 126             self.reverse()
 127
 128         self.connect('motion-notify-event', self.__motion_notify_event_cb)
 129
 130     def __motion_notify_event_cb(self, box, event):
 131         if event.detail == hippo.MOTION_DETAIL_ENTER:
 132             box.props.background_color = style.COLOR_SELECTION_GREY.get_int()
 133         elif event.detail == hippo.MOTION_DETAIL_LEAVE:
 134             box.props.background_color = style.COLOR_PANEL_GREY.get_int()
 135         return False