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# Copyright (C) 2009, Tomeu Vizoso
# Copyright (C) 2010, Aleksey Lim
#
# 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 logging
from gettext import gettext as _
import time
import gobject
import gtk
import hippo
from sugar.graphics import style
from sugar.graphics.icon import CanvasIcon
from sugar.graphics.icon import Icon
from jarabe.journal import model
from jarabe.journal.listview import ListView
from jarabe.journal.thumbsview import ThumbsView
UPDATE_INTERVAL = 300
VIEW_LIST = 0
VIEW_THUMBS = 1
_MESSAGE_PROGRESS = 2
_MESSAGE_EMPTY_JOURNAL = 3
_MESSAGE_NO_MATCH = 4
PAGE_SIZE = 10
class View(gtk.EventBox):
__gsignals__ = {
'clear-clicked': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
([])),
'entry-activated': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
([str])),
}
def __init__(self, selection=False):
gtk.EventBox.__init__(self)
self._query = {}
self._result_set = None
self._pages = {}
self._current_page = None
self._view = None
self._last_progress_bar_pulse = None
self._progress_bar = None
self._page_ctors = {
VIEW_LIST: lambda: self._view_new(ListView, selection),
VIEW_THUMBS: lambda: self._view_new(ThumbsView, selection),
_MESSAGE_PROGRESS: self._progress_new,
_MESSAGE_EMPTY_JOURNAL: self._message_new,
_MESSAGE_NO_MATCH: self._message_new,
}
self.connect('destroy', self.__destroy_cb)
# Auto-update stuff
self._fully_obscured = True
self._dirty = False
self._update_dates_timer = None
model.created.connect(self.__model_created_cb)
model.updated.connect(self.__model_updated_cb)
model.deleted.connect(self.__model_deleted_cb)
self.view = VIEW_LIST
def get_view(self):
if self._view is None:
return None
else:
return self._pages[self._view].child
def set_view(self, view):
if self._page == self._view:
# change view only if current page is view as well
self._page = view
if view != self._view:
if self.view is not None:
frame_range = self.view.frame_range
else:
frame_range = None
self._view = view
self.view.set_result_set(self._result_set)
self.view.frame_range = frame_range
view = property(get_view, set_view)
def _set_page(self, page):
if self._current_page == page:
return
self._current_page = page
if page in self._pages:
child = self._pages[page]
else:
child = self._page_ctors[page]()
child.show_all()
self._pages[page] = child
if self.child is not None:
self.remove(self.child)
self.add(child)
def _get_page(self):
return self._current_page
_page = property(_get_page, _set_page)
def __model_created_cb(self, signal, **kwargs):
self._set_dirty(kwargs['mountpoint'])
def __model_updated_cb(self, signal, **kwargs):
self._set_dirty(kwargs['mountpoint'])
def __model_deleted_cb(self, signal, **kwargs):
self._set_dirty(kwargs['mountpoint'])
def __destroy_cb(self, widget):
if self._result_set is not None:
self._result_set.stop()
def update_with_query(self, query_dict):
logging.debug('ListView.update_with_query')
self._query = query_dict
if 'order_by' not in self._query:
self._query['order_by'] = ['+timestamp']
self.refresh()
def refresh(self):
logging.debug('View.refresh query %r', self._query)
if self._result_set is not None:
self._result_set.stop()
self._dirty = False
self._result_set = model.find(self._query, PAGE_SIZE)
self._result_set.ready.connect(self.__result_set_ready_cb)
self._result_set.progress.connect(self.__result_set_progress_cb)
self._result_set.setup()
def __result_set_ready_cb(self, **kwargs):
if self._result_set.length == 0:
if self._is_query_empty():
self._page = _MESSAGE_EMPTY_JOURNAL
else:
self._page = _MESSAGE_NO_MATCH
else:
self._page = self._view
self.view.set_result_set(self._result_set)
def _is_query_empty(self):
# FIXME: This is a hack, we shouldn't have to update this every time
# a new search term is added.
if self._query.get('query', '') or self._query.get('mime_type', '') or \
self._query.get('keep', '') or self._query.get('mtime', '') or \
self._query.get('activity', ''):
return False
else:
return True
def __result_set_progress_cb(self, **kwargs):
if self._page != _MESSAGE_PROGRESS:
self._last_progress_bar_pulse = time.time()
self._page = _MESSAGE_PROGRESS
if time.time() - self._last_progress_bar_pulse > 0.05:
self._progress_bar.pulse()
self._last_progress_bar_pulse = time.time()
def _view_new(self, view_class, selection):
view = view_class(selection)
view.modify_bg(gtk.STATE_NORMAL, style.COLOR_WHITE.get_gdk_color())
view.connect('entry-activated', self.__entry_activated_cb)
scrolled_view = gtk.ScrolledWindow()
scrolled_view.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
scrolled_view.add(view)
return scrolled_view
def _progress_new(self):
alignment = gtk.Alignment(xalign=0.5, yalign=0.5, xscale=0.5)
self._progress_bar = gtk.ProgressBar()
self._progress_bar.props.pulse_step = 0.01
alignment.add(self._progress_bar)
return alignment
def _message_new(self):
canvas = hippo.Canvas()
box = hippo.CanvasBox(orientation=hippo.ORIENTATION_VERTICAL,
background_color=style.COLOR_WHITE.get_int(),
yalign=hippo.ALIGNMENT_CENTER,
spacing=style.DEFAULT_SPACING,
padding_bottom=style.GRID_CELL_SIZE)
canvas.set_root(box)
icon = CanvasIcon(size=style.LARGE_ICON_SIZE,
icon_name='activity-journal',
stroke_color = style.COLOR_BUTTON_GREY.get_svg(),
fill_color = style.COLOR_TRANSPARENT.get_svg())
box.append(icon)
if self._page == _MESSAGE_EMPTY_JOURNAL:
text = _('Your Journal is empty')
elif self._page == _MESSAGE_NO_MATCH:
text = _('No matching entries')
else:
raise ValueError('Invalid message')
text = hippo.CanvasText(text=text,
xalign=hippo.ALIGNMENT_CENTER,
font_desc=style.FONT_BOLD.get_pango_desc(),
color = style.COLOR_BUTTON_GREY.get_int())
box.append(text)
if self._page == _MESSAGE_NO_MATCH:
button = gtk.Button(label=_('Clear search'))
button.connect('clicked', self.__clear_button_clicked_cb)
button.props.image = Icon(icon_name='dialog-cancel',
icon_size=gtk.ICON_SIZE_BUTTON)
canvas_button = hippo.CanvasWidget(widget=button,
xalign=hippo.ALIGNMENT_CENTER)
box.append(canvas_button)
return canvas
def __clear_button_clicked_cb(self, button):
self.emit('clear-clicked')
def update_dates(self):
self.view.refill()
def _set_dirty(self, mountpoint):
if mountpoint not in self._query.get('mountpoints', []):
return
if self._fully_obscured:
self._dirty = True
else:
self.refresh()
def set_is_visible(self, visible):
if visible != self._fully_obscured:
return
logging.debug('canvas_visibility_notify_event_cb %r', visible)
if visible:
self._fully_obscured = False
if self._dirty:
self.refresh()
if self._update_dates_timer is None:
logging.debug('Adding date updating timer')
self._update_dates_timer = \
gobject.timeout_add_seconds(UPDATE_INTERVAL,
self.__update_dates_timer_cb)
else:
self._fully_obscured = True
if self._update_dates_timer is not None:
logging.debug('Remove date updating timer')
gobject.source_remove(self._update_dates_timer)
self._update_dates_timer = None
def __update_dates_timer_cb(self):
self.update_dates()
return True
def __entry_activated_cb(self, sender, uid):
self.emit('entry-activated', uid)
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