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# Copyright 2007-2008 One Laptop Per Child
# Copyright 2009, Aleksey Lim
# Copyright 2010, Mukesh Gupta
#
# 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 re
import os
import time
import logging
from datetime import datetime
from gettext import gettext as _
from os.path import join
import gtk
import hippo
import pango
import cairo
from sugar.graphics import style
from sugar.graphics.roundbox import CanvasRoundBox
from sugar.graphics.palette import Palette, CanvasInvoker
from sugar.presence import presenceservice
from sugar.graphics.menuitem import MenuItem
from sugar.activity.activity import get_activity_root, show_object_in_journal
from sugar.util import timestamp_to_elapsed_string
from sugar.datastore import datastore
from sugar import profile
from chat import smilies
_URL_REGEXP = re.compile('((http|ftp)s?://)?'
'(([-a-zA-Z0-9]+[.])+[-a-zA-Z0-9]{2,}|([0-9]{1,3}[.]){3}[0-9]{1,3})'
'(:[1-9][0-9]{0,4})?(/[-a-zA-Z0-9/%~@&_+=;:,.?#]*[a-zA-Z0-9/])?')
class ChatBox(hippo.CanvasScrollbars):
def __init__(self):
hippo.CanvasScrollbars.__init__(self)
self.owner = presenceservice.get_instance().get_owner()
# Auto vs manual scrolling:
self._scroll_auto = True
self._scroll_value = 0.0
self._last_msg_sender = None
# Track last message, to combine several messages:
self._last_msg = None
self._chat_log = ''
self._conversation = hippo.CanvasBox(
spacing=0,
box_width=-1, # natural width
background_color=style.COLOR_WHITE.get_int())
self.set_policy(hippo.ORIENTATION_HORIZONTAL,
hippo.SCROLLBAR_NEVER)
self.set_root(self._conversation)
vadj = self.props.widget.get_vadjustment()
vadj.connect('changed', self._scroll_changed_cb)
vadj.connect('value-changed', self._scroll_value_changed_cb)
def get_log(self):
return self._chat_log
def add_text(self, buddy, text, status_message=False):
"""Display text on screen, with name and colors.
buddy -- buddy object or dict {nick: string, color: string}
(The dict is for loading the chat log from the journal,
when we don't have the buddy object any more.)
text -- string, what the buddy said
status_message -- boolean
False: show what buddy said
True: show what buddy did
hippo layout:
.------------- rb ---------------.
| +name_vbox+ +----msg_vbox----+ |
| | | | | |
| | nick: | | +--msg_hbox--+ | |
| | | | | text | | |
| +---------+ | +------------+ | |
| | | |
| | +--msg_hbox--+ | |
| | | text | url | | |
| | +------------+ | |
| +----------------+ |
`--------------------------------'
###Warning hippocanvas dependency###
"""
if not buddy:
buddy = self.owner
if type(buddy) is dict:
# dict required for loading chat log from journal
nick = buddy['nick']
color = buddy['color']
else:
nick = buddy.props.nick
color = buddy.props.color
try:
color_stroke_html, color_fill_html = color.split(',')
except ValueError:
color_stroke_html, color_fill_html = ('#000000', '#888888')
# Select text color based on fill color:
color_fill_rgba = style.Color(color_fill_html).get_rgba()
color_fill_gray = (color_fill_rgba[0] + color_fill_rgba[1] +
color_fill_rgba[2]) / 3
color_stroke = style.Color(color_stroke_html).get_int()
color_fill = style.Color(color_fill_html).get_int()
if color_fill_gray < 0.5:
text_color = style.COLOR_WHITE.get_int()
else:
text_color = style.COLOR_BLACK.get_int()
self._add_log(nick, color, text, status_message)
# Check for Right-To-Left languages:
if pango.find_base_dir(nick, -1) == pango.DIRECTION_RTL:
lang_rtl = True
else:
lang_rtl = False
# Check if new message box or add text to previous:
new_msg = True
if self._last_msg_sender:
if not status_message:
if buddy == self._last_msg_sender:
# Add text to previous message
new_msg = False
if not new_msg:
rb = self._last_msg
msg_vbox = rb.get_children()[1]
msg_hbox = hippo.CanvasBox(
box_width=-1, # natural width
orientation=hippo.ORIENTATION_HORIZONTAL)
msg_vbox.append(msg_hbox)
else:
rb = CanvasRoundBox(background_color=color_fill,
border_color=color_stroke,
box_width=-1, # natural width
padding=4)
rb.props.border_color = color_stroke # Bug #3742
self._last_msg = rb
self._last_msg_sender = buddy
if not status_message:
name = hippo.CanvasText(text=nick + ': ', color=text_color)
name_vbox = hippo.CanvasBox(
box_width=-1,
orientation=hippo.ORIENTATION_VERTICAL)
name_vbox.append(name)
rb.append(name_vbox)
msg_vbox = hippo.CanvasBox(
orientation=hippo.ORIENTATION_VERTICAL)
rb.append(msg_vbox)
msg_hbox = hippo.CanvasBox(
orientation=hippo.ORIENTATION_HORIZONTAL)
msg_vbox.append(msg_hbox)
if status_message:
self._last_msg_sender = None
match = _URL_REGEXP.search(text)
while match:
# there is a URL in the text
starttext = text[:match.start()]
if starttext:
message = hippo.CanvasText(
text=starttext,
size_mode=hippo.CANVAS_SIZE_WRAP_WORD,
color=text_color,
xalign=hippo.ALIGNMENT_START)
msg_hbox.append(message)
url = text[match.start():match.end()]
message = _CanvasLink(
text=url,
color=text_color)
attrs = pango.AttrList()
attrs.insert(pango.AttrUnderline(pango.UNDERLINE_SINGLE, 0, 32767))
message.set_property("attributes", attrs)
message.connect('activated', self._link_activated_cb)
# call interior magic which should mean just:
# CanvasInvoker().parent = message
CanvasInvoker(message)
msg_hbox.append(message)
text = text[match.end():]
match = _URL_REGEXP.search(text)
if text:
for word in smilies.parse(text):
if isinstance(word, cairo.ImageSurface):
item = hippo.CanvasImage(
image=word,
border=0,
border_color=style.COLOR_BUTTON_GREY.get_int(),
xalign=hippo.ALIGNMENT_CENTER,
yalign=hippo.ALIGNMENT_CENTER)
else:
item = hippo.CanvasText(
text=word,
size_mode=hippo.CANVAS_SIZE_WRAP_WORD,
color=text_color,
xalign=hippo.ALIGNMENT_START)
msg_hbox.append(item)
# Order of boxes for RTL languages:
if lang_rtl:
msg_hbox.reverse()
if new_msg:
rb.reverse()
if new_msg:
box = hippo.CanvasBox(padding=2)
box.append(rb)
self._conversation.append(box)
def add_separator(self, timestamp):
"""Add whitespace and timestamp between chat sessions."""
time_with_current_year = (time.localtime(time.time())[0],) +\
time.strptime(timestamp, "%b %d %H:%M:%S")[1:]
timestamp_seconds = time.mktime(time_with_current_year)
if timestamp_seconds > time.time():
time_with_previous_year = (time.localtime(time.time())[0] - 1,) +\
time.strptime(timestamp, "%b %d %H:%M:%S")[1:]
timestamp_seconds = time.mktime(time_with_previous_year)
message = hippo.CanvasText(
text=timestamp_to_elapsed_string(timestamp_seconds),
color=style.COLOR_BUTTON_GREY.get_int(),
font_desc=style.FONT_NORMAL.get_pango_desc(),
xalign=hippo.ALIGNMENT_CENTER)
box = hippo.CanvasBox(padding=2)
box.append(message)
self._conversation.append(box)
self.add_log_timestamp(timestamp)
self._last_msg_sender = None
def add_log_timestamp(self, existing_timestamp=None):
"""Add a timestamp entry to the chat log."""
if existing_timestamp is not None:
self._chat_log += '%s\t\t\n' % existing_timestamp
else:
self._chat_log += '%s\t\t\n' % (
datetime.strftime(datetime.now(), '%b %d %H:%M:%S'))
def _add_log(self, nick, color, text, status_message):
"""Add the text to the chat log.
nick -- string, buddy nickname
color -- string, buddy.props.color
text -- string, body of message
status_message -- boolean
"""
if not nick:
nick = '???'
if not color:
color = '#000000,#FFFFFF'
if not text:
text = '-'
if not status_message:
status_message = False
self._chat_log += '%s\t%s\t%s\t%d\t%s\n' % (
datetime.strftime(datetime.now(), '%b %d %H:%M:%S'),
nick, color, status_message, text)
def _scroll_value_changed_cb(self, adj, scroll=None):
"""Turn auto scrolling on or off.
If the user scrolled up, turn it off.
If the user scrolled to the bottom, turn it back on.
"""
if adj.get_value() < self._scroll_value:
self._scroll_auto = False
elif adj.get_value() == adj.upper - adj.page_size:
self._scroll_auto = True
def _scroll_changed_cb(self, adj, scroll=None):
"""Scroll the chat window to the bottom"""
if self._scroll_auto:
adj.set_value(adj.upper - adj.page_size)
self._scroll_value = adj.get_value()
def _link_activated_cb(self, link):
url = _url_check_protocol(link.props.text)
self._show_via_journal(url)
def _show_via_journal(self, url):
"""Ask the journal to display a URL"""
logging.debug('Create journal entry for URL: %s', url)
jobject = datastore.create()
metadata = {
'title': "%s: %s" % (_('URL from Chat'), url),
'title_set_by_user': '1',
'icon-color': profile.get_color().to_string(),
'mime_type': 'text/uri-list',
}
for k, v in metadata.items():
jobject.metadata[k] = v
file_path = join(get_activity_root(), 'instance', '%i_' % time.time())
open(file_path, 'w').write(url + '\r\n')
os.chmod(file_path, 0755)
jobject.set_file_path(file_path)
datastore.write(jobject)
show_object_in_journal(jobject.object_id)
jobject.destroy()
os.unlink(file_path)
class _CanvasLink(hippo.CanvasLink):
def __init__(self, **kwargs):
hippo.CanvasLink.__init__(self, **kwargs)
def create_palette(self):
return _URLMenu(self.props.text)
class _URLMenu(Palette):
def __init__(self, url):
Palette.__init__(self, url)
self.owns_clipboard = False
self.url = _url_check_protocol(url)
menu_item = MenuItem(_('Copy to Clipboard'), 'edit-copy')
menu_item.connect('activate', self._copy_to_clipboard_cb)
self.menu.append(menu_item)
menu_item.show()
def create_palette(self):
pass
def _copy_to_clipboard_cb(self, menuitem):
logging.debug('Copy %s to clipboard', self.url)
clipboard = gtk.clipboard_get()
targets = [("text/uri-list", 0, 0),
("UTF8_STRING", 0, 1)]
if not clipboard.set_with_data(targets,
self._clipboard_data_get_cb,
self._clipboard_clear_cb,
(self.url)):
logging.error('GtkClipboard.set_with_data failed!')
else:
self.owns_clipboard = True
def _clipboard_data_get_cb(self, clipboard, selection, info, data):
logging.debug('_clipboard_data_get_cb data=%s target=%s', data,
selection.target)
if selection.target in ['text/uri-list']:
if not selection.set_uris([data]):
logging.debug('failed to set_uris')
else:
logging.debug('not uri')
if not selection.set_text(data):
logging.debug('failed to set_text')
def _clipboard_clear_cb(self, clipboard, data):
logging.debug('clipboard_clear_cb')
self.owns_clipboard = False
def _url_check_protocol(url):
"""Check that the url has a protocol, otherwise prepend https://
url -- string
Returns url -- string
"""
protocols = ['http://', 'https://', 'ftp://', 'ftps://']
no_protocol = True
for protocol in protocols:
if url.startswith(protocol):
no_protocol = False
if no_protocol:
url = 'http://' + url
return url
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