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#
# Copyright (C) 2006, 2007, One Laptop Per Child
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import json
import sha
from gi.repository import GObject
from hashlib import sha1
class Model(GObject.GObject):
''' The model of web-activity which uses json to serialize its data
to a file and deserealize from it.
'''
add_link_signal = GObject.Signal('add_link', arg_types=[int, bool])
link_removed_signal = GObject.Signal('link-removed')
def __init__(self):
GObject.GObject.__init__(self)
self.data = {}
self.data['shared_links'] = []
def has_link(self, uri):
'''returns true if the uri is already bookmarked, O(n) oddly'''
for link in self.data['shared_links']:
if link['hash'] == sha1(uri).hexdigest():
return True
return False
def add_link(self, url, title, thumb, owner, color, timestamp,
by_me=False):
info = {'hash': sha.new(str(url)).hexdigest(), 'url': str(url),
'title': str(title), 'thumb': thumb,
'owner': str(owner), 'color': str(color),
'timestamp': float(timestamp)}
self.add_link_from_info(info, by_me)
def add_link_from_info(self, info_dict, by_me=False):
index = len(self.data['shared_links'])
for item in self.data['shared_links']:
if info_dict['timestamp'] <= item['timestamp']:
index = self.data['shared_links'].index(item)
break
self.data['shared_links'].insert(index, info_dict)
self.add_link_signal.emit(index, by_me)
def remove_link(self, hash):
for link in self.data['shared_links']:
if link['hash'] == hash:
self.data['shared_links'].remove(link)
self.link_removed_signal.emit()
break
def change_link_notes(self, hash, notes):
for link in self.data['shared_links']:
if link['hash'] == hash:
link['notes'] = notes
def serialize(self):
return json.dumps(self.data)
def deserialize(self, data):
self.data = json.loads(data)
self.data.setdefault('shared_links', [])
def get_links_ids(self):
ids = []
for link in self.data['shared_links']:
ids.append(link['hash'])
ids.append('')
return ids
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