imip-agent

Annotated imip_manager.py

372:a255f88714d6
2015-03-03 Paul Boddie Removed PARTSTAT from ORGANIZER in order to conform to the somewhat vague RFC. See: https://bugzilla.mozilla.org/show_bug.cgi?id=459683 recurring-events
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#!/usr/bin/env python
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"""
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A Web interface to a user's calendar.
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Copyright (C) 2014, 2015 Paul Boddie <paul@boddie.org.uk>
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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this program.  If not, see <http://www.gnu.org/licenses/>.
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"""
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# Edit this path to refer to the location of the imiptools libraries, if
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# necessary.
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LIBRARY_PATH = "/var/lib/imip-agent"
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from datetime import date, datetime, timedelta
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import babel.dates
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import cgi, os, sys
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sys.path.append(LIBRARY_PATH)
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from imiptools.content import Handler
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from imiptools.data import get_address, get_uri, get_window_end, make_freebusy, \
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                           Object, to_part, \
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                           uri_dict, uri_item, uri_items, uri_values
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from imiptools.dates import format_datetime, format_time, get_date, get_datetime, \
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                            get_datetime_item, get_default_timezone, \
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                            get_end_of_day, get_start_of_day, get_start_of_next_day, \
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                            get_timestamp, ends_on_same_day, to_timezone
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from imiptools.mail import Messenger
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from imiptools.period import add_day_start_points, add_empty_days, add_slots, \
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                             convert_periods, get_freebusy_details, \
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                             get_scale, have_conflict, get_slots, get_spans, \
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                             partition_by_day, remove_period, update_freebusy
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from imiptools.profile import Preferences
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import imip_store
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import markup
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getenv = os.environ.get
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setenv = os.environ.__setitem__
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class CGIEnvironment:
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    "A CGI-compatible environment."
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    def __init__(self, charset=None):
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        self.charset = charset
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        self.args = None
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        self.method = None
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        self.path = None
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        self.path_info = None
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        self.user = None
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    def get_args(self):
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        if self.args is None:
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            if self.get_method() != "POST":
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                setenv("QUERY_STRING", "")
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            args = cgi.parse(keep_blank_values=True)
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            if not self.charset:
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                self.args = args
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            else:
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                self.args = {}
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                for key, values in args.items():
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                    self.args[key] = [unicode(value, self.charset) for value in values]
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        return self.args
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    def get_method(self):
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        if self.method is None:
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            self.method = getenv("REQUEST_METHOD") or "GET"
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        return self.method
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    def get_path(self):
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        if self.path is None:
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            self.path = getenv("SCRIPT_NAME") or ""
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        return self.path
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    def get_path_info(self):
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        if self.path_info is None:
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            self.path_info = getenv("PATH_INFO") or ""
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        return self.path_info
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    def get_user(self):
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        if self.user is None:
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            self.user = getenv("REMOTE_USER") or ""
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        return self.user
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    def get_output(self):
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        return sys.stdout
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    def get_url(self):
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        path = self.get_path()
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        path_info = self.get_path_info()
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        return "%s%s" % (path.rstrip("/"), path_info)
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    def new_url(self, path_info):
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        path = self.get_path()
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        return "%s/%s" % (path.rstrip("/"), path_info.lstrip("/"))
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class Common:
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    "Common handler and manager methods."
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    def __init__(self, user):
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        self.user = user
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        self.preferences = None
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    def get_preferences(self):
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        if not self.preferences:
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            self.preferences = Preferences(self.user)
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        return self.preferences
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    def get_tzid(self):
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        prefs = self.get_preferences()
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        return prefs.get("TZID") or get_default_timezone()
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    def get_window_size(self):
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        prefs = self.get_preferences()
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        try:
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            return int(prefs.get("window_size"))
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        except (TypeError, ValueError):
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            return 100
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    def get_window_end(self):
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        return get_window_end(self.get_tzid(), self.get_window_size())
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    def update_attendees(self, obj, added, removed):
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        """
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        Update the attendees in 'obj' with the given 'added' and 'removed'
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        attendee lists. A list is returned containing the attendees whose
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        attendance should be cancelled.
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        """
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        to_cancel = []
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        if added or removed:
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            attendees = uri_items(obj.get_items("ATTENDEE") or [])
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            if removed:
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                remaining = []
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                for attendee, attendee_attr in attendees:
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                    if attendee in removed:
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                        to_cancel.append((attendee, attendee_attr))
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                    else:
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                        remaining.append((attendee, attendee_attr))
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                attendees = remaining
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            if added:
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                for attendee in added:
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                    attendees.append((attendee, {"PARTSTAT" : "NEEDS-ACTION", "RSVP" : "TRUE"}))
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            obj["ATTENDEE"] = attendees
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        return to_cancel
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class ManagerHandler(Common, Handler):
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    """
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    A content handler for use by the manager, as opposed to operating within the
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    mail processing pipeline.
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    """
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    def __init__(self, obj, user, messenger):
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        Handler.__init__(self, messenger=messenger)
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        Common.__init__(self, user)
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        self.set_object(obj)
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    # Communication methods.
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    def send_message(self, method, sender, for_organiser):
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        """
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        Create a full calendar object employing the given 'method', and send it
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        to the appropriate recipients, also sending a copy to the 'sender'. The
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        'for_organiser' value indicates whether the organiser is sending this
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        message.
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        """
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        parts = [self.obj.to_part(method)]
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        # As organiser, send an invitation to attendees, excluding oneself if
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        # also attending. The updated event will be saved by the outgoing
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        # handler.
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        organiser = get_uri(self.obj.get_value("ORGANIZER"))
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        attendees = uri_values(self.obj.get_values("ATTENDEE"))
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        if for_organiser:
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            recipients = [get_address(attendee) for attendee in attendees if attendee != self.user]
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        else:
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            recipients = [get_address(organiser)]
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        # Bundle free/busy information if appropriate.
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        preferences = Preferences(self.user)
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        if preferences.get("freebusy_sharing") == "share" and \
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           preferences.get("freebusy_bundling") == "always":
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            # Invent a unique identifier.
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            utcnow = get_timestamp()
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            uid = "imip-agent-%s-%s" % (utcnow, get_address(self.user))
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            freebusy = self.store.get_freebusy(self.user)
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            # Replace the non-updated free/busy details for this event with
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            # newer details (since the outgoing handler updates this user's
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            # free/busy details).
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            update_freebusy(freebusy,
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                self.obj.get_periods_for_freebusy(self.get_tzid(), self.get_window_end()),
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                self.obj.get_value("TRANSP") or "OPAQUE",
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                self.uid, self.recurrenceid)
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            user_attr = self.messenger and self.messenger.sender != get_address(self.user) and \
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                {"SENT-BY" : get_uri(self.messenger.sender)} or {}
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            parts.append(to_part("PUBLISH", [
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                make_freebusy(freebusy, uid, self.user, user_attr)
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                ]))
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        message = self.messenger.make_outgoing_message(parts, recipients, outgoing_bcc=sender)
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        self.messenger.sendmail(recipients, message.as_string(), outgoing_bcc=sender)
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    # Action methods.
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    def process_received_request(self, update=False):
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        """
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        Process the current request for the given 'user'. Return whether any
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        action was taken.
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        If 'update' is given, the sequence number will be incremented in order
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        to override any previous response.
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        """
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        # Reply only on behalf of this user.
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        for attendee, attendee_attr in uri_items(self.obj.get_items("ATTENDEE")):
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            if attendee == self.user:
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                if attendee_attr.has_key("RSVP"):
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                    del attendee_attr["RSVP"]
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                if self.messenger and self.messenger.sender != get_address(attendee):
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                    attendee_attr["SENT-BY"] = get_uri(self.messenger.sender)
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                self.obj["ATTENDEE"] = [(attendee, attendee_attr)]
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                self.update_dtstamp()
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                self.set_sequence(update)
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                self.send_message("REPLY", get_address(attendee), for_organiser=False)
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                return True
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        return False
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    def process_created_request(self, method, update=False, removed=None, added=None):
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        """
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        Process the current request for the given 'user', sending a created
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        request of the given 'method' to attendees. Return whether any action
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        was taken.
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        If 'update' is given, the sequence number will be incremented in order
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        to override any previous message.
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        If 'removed' is specified, a list of participants to be removed is
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        provided.
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        If 'added' is specified, a list of participants to be added is provided.
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        """
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        organiser, organiser_attr = uri_item(self.obj.get_item("ORGANIZER"))
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        if self.messenger and self.messenger.sender != get_address(organiser):
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            organiser_attr["SENT-BY"] = get_uri(self.messenger.sender)
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        # Update the attendees in the event.
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        to_cancel = self.update_attendees(self.obj, added, removed)
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        self.update_dtstamp()
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        self.set_sequence(update)
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        self.send_message(method, get_address(organiser), for_organiser=True)
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        # When cancelling, replace the attendees with those for whom the event
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        # is now cancelled.
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        if to_cancel:
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            remaining = self.obj["ATTENDEE"]
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            self.obj["ATTENDEE"] = to_cancel
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            self.send_message("CANCEL", get_address(organiser), for_organiser=True)
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            # Just in case more work is done with this event, the attendees are
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            # now restored.
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            self.obj["ATTENDEE"] = remaining
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        return True
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class Manager(Common):
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    "A simple manager application."
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    def __init__(self, messenger=None):
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        self.messenger = messenger or Messenger()
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        self.encoding = "utf-8"
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        self.env = CGIEnvironment(self.encoding)
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        user = self.env.get_user()
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        Common.__init__(self, user and get_uri(user) or None)
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        self.locale = None
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        self.requests = None
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        self.out = self.env.get_output()
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        self.page = markup.page()
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        self.store = imip_store.FileStore()
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        self.objects = {}
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        try:
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            self.publisher = imip_store.FilePublisher()
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        except OSError:
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            self.publisher = None
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    def _get_identifiers(self, path_info):
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        parts = path_info.lstrip("/").split("/")
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        if len(parts) == 1:
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            return parts[0], None
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        else:
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            return parts[:2]
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    def _get_object(self, uid, recurrenceid=None):
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        if self.objects.has_key((uid, recurrenceid)):
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            return self.objects[(uid, recurrenceid)]
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        fragment = uid and self.store.get_event(self.user, uid, recurrenceid) or None
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        obj = self.objects[(uid, recurrenceid)] = fragment and Object(fragment)
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        return obj
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    def _get_requests(self):
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        if self.requests is None:
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            cancellations = self.store.get_cancellations(self.user)
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            requests = set(self.store.get_requests(self.user))
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            self.requests = requests.difference(cancellations)
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        return self.requests
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    def _get_request_summary(self):
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        summary = []
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        for uid, recurrenceid in self._get_requests():
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            obj = self._get_object(uid, recurrenceid)
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            if obj:
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                for start, end in obj.get_periods_for_freebusy(self.get_tzid(), self.get_window_end()):
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                    summary.append((start, end, uid, obj.get_value("TRANSP"), recurrenceid))
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        return summary
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    # Preference methods.
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    def get_user_locale(self):
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        if not self.locale:
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            self.locale = self.get_preferences().get("LANG", "en")
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        return self.locale
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    # Prettyprinting of dates and times.
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    def format_date(self, dt, format):
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        return self._format_datetime(babel.dates.format_date, dt, format)
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    def format_time(self, dt, format):
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        return self._format_datetime(babel.dates.format_time, dt, format)
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    def format_datetime(self, dt, format):
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        return self._format_datetime(
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            isinstance(dt, datetime) and babel.dates.format_datetime or babel.dates.format_date,
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            dt, format)
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    def _format_datetime(self, fn, dt, format):
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        return fn(dt, format=format, locale=self.get_user_locale())
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    # Data management methods.
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    def remove_request(self, uid, recurrenceid=None):
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        return self.store.dequeue_request(self.user, uid, recurrenceid)
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    def remove_event(self, uid, recurrenceid=None):
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        return self.store.remove_event(self.user, uid, recurrenceid)
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    def update_freebusy(self, uid, recurrenceid, obj):
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        """
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        Update stored free/busy details for the event with the given 'uid' and
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        'recurrenceid' having a representation of 'obj'.
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        """
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        is_only_organiser = self.user not in uri_values(obj.get_values("ATTENDEE"))
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        freebusy = self.store.get_freebusy(self.user)
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        update_freebusy(freebusy,
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            obj.get_periods_for_freebusy(self.get_tzid(), self.get_window_end()),
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            is_only_organiser and "ORG" or obj.get_value("TRANSP"),
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            uid, recurrenceid)
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        self.store.set_freebusy(self.user, freebusy)
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    def remove_from_freebusy(self, uid, recurrenceid=None):
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        freebusy = self.store.get_freebusy(self.user)
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        remove_period(freebusy, uid, recurrenceid)
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        self.store.set_freebusy(self.user, freebusy)
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    # Presentation methods.
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    def new_page(self, title):
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        self.page.init(title=title, charset=self.encoding, css=self.env.new_url("styles.css"))
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    def status(self, code, message):
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        self.header("Status", "%s %s" % (code, message))
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    def header(self, header, value):
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        print >>self.out, "%s: %s" % (header, value)
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    def no_user(self):
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        self.status(403, "Forbidden")
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        self.new_page(title="Forbidden")
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        self.page.p("You are not logged in and thus cannot access scheduling requests.")
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    def no_page(self):
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        self.status(404, "Not Found")
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        self.new_page(title="Not Found")
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        self.page.p("No page is provided at the given address.")
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    def redirect(self, url):
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        self.status(302, "Redirect")
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        self.header("Location", url)
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        self.new_page(title="Redirect")
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        self.page.p("Redirecting to: %s" % url)
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    def link_to(self, uid, recurrenceid=None):
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        if recurrenceid:
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            return self.env.new_url("/".join([uid, recurrenceid]))
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        else:
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            return self.env.new_url(uid)
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    # Request logic methods.
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    def handle_newevent(self):
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        """
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        Handle any new event operation, creating a new event and redirecting to
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        the event page for further activity.
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        """
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        # Handle a submitted form.
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        args = self.env.get_args()
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        if not args.has_key("newevent"):
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            return
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        # Create a new event using the available information.
paul@202 478
paul@236 479
        slots = args.get("slot", [])
paul@202 480
        participants = args.get("participants", [])
paul@202 481
paul@236 482
        if not slots:
paul@202 483
            return
paul@202 484
paul@273 485
        # Obtain the user's timezone.
paul@273 486
paul@273 487
        tzid = self.get_tzid()
paul@273 488
paul@236 489
        # Coalesce the selected slots.
paul@236 490
paul@236 491
        slots.sort()
paul@236 492
        coalesced = []
paul@236 493
        last = None
paul@236 494
paul@236 495
        for slot in slots:
paul@236 496
            start, end = slot.split("-")
paul@273 497
            start = get_datetime(start, {"TZID" : tzid})
paul@273 498
            end = end and get_datetime(end, {"TZID" : tzid}) or get_start_of_next_day(start, tzid)
paul@248 499
paul@236 500
            if last:
paul@248 501
                last_start, last_end = last
paul@248 502
paul@248 503
                # Merge adjacent dates and datetimes.
paul@248 504
paul@273 505
                if start == last_end or get_start_of_day(last_end, tzid) == get_start_of_day(start, tzid):
paul@248 506
                    last = last_start, end
paul@236 507
                    continue
paul@248 508
paul@248 509
                # Handle datetimes within dates.
paul@248 510
                # Datetime periods are within single days and are therefore
paul@248 511
                # discarded.
paul@248 512
paul@273 513
                elif get_start_of_day(start, tzid) == get_start_of_day(last_start, tzid):
paul@248 514
                    continue
paul@248 515
paul@248 516
                # Add separate dates and datetimes.
paul@248 517
paul@236 518
                else:
paul@236 519
                    coalesced.append(last)
paul@248 520
paul@236 521
            last = start, end
paul@236 522
paul@236 523
        if last:
paul@236 524
            coalesced.append(last)
paul@202 525
paul@202 526
        # Invent a unique identifier.
paul@202 527
paul@222 528
        utcnow = get_timestamp()
paul@202 529
        uid = "imip-agent-%s-%s" % (utcnow, get_address(self.user))
paul@202 530
paul@236 531
        # Define a single occurrence if only one coalesced slot exists.
paul@236 532
        # Otherwise, many occurrences are defined.
paul@202 533
paul@236 534
        for i, (start, end) in enumerate(coalesced):
paul@236 535
            this_uid = "%s-%s" % (uid, i)
paul@236 536
paul@252 537
            start_value, start_attr = get_datetime_item(start, tzid)
paul@252 538
            end_value, end_attr = get_datetime_item(end, tzid)
paul@239 539
paul@236 540
            # Create a calendar object and store it as a request.
paul@236 541
paul@236 542
            record = []
paul@236 543
            rwrite = record.append
paul@202 544
paul@236 545
            rwrite(("UID", {}, this_uid))
paul@236 546
            rwrite(("SUMMARY", {}, "New event at %s" % utcnow))
paul@236 547
            rwrite(("DTSTAMP", {}, utcnow))
paul@239 548
            rwrite(("DTSTART", start_attr, start_value))
paul@239 549
            rwrite(("DTEND", end_attr, end_value))
paul@236 550
            rwrite(("ORGANIZER", {}, self.user))
paul@202 551
paul@236 552
            for participant in participants:
paul@236 553
                if not participant:
paul@236 554
                    continue
paul@236 555
                participant = get_uri(participant)
paul@253 556
                rwrite(("ATTENDEE", {"RSVP" : "TRUE", "PARTSTAT" : "NEEDS-ACTION"}, participant))
paul@202 557
paul@343 558
            node = ("VEVENT", {}, record)
paul@236 559
paul@361 560
            self.store.set_event(self.user, this_uid, None, node=node)
paul@236 561
            self.store.queue_request(self.user, this_uid)
paul@202 562
paul@236 563
        # Redirect to the object (or the first of the objects), where instead of
paul@236 564
        # attendee controls, there will be organiser controls.
paul@236 565
paul@345 566
        self.redirect(self.link_to("%s-0" % uid))
paul@202 567
paul@286 568
    def handle_request(self, uid, obj):
paul@121 569
paul@299 570
        """
paul@299 571
        Handle actions involving the given 'uid' and 'obj' object, returning an
paul@299 572
        error if one occurred, or None if the request was successfully handled.
paul@299 573
        """
paul@121 574
paul@121 575
        # Handle a submitted form.
paul@121 576
paul@121 577
        args = self.env.get_args()
paul@299 578
paul@299 579
        # Get the possible actions.
paul@299 580
paul@299 581
        reply = args.has_key("reply")
paul@299 582
        discard = args.has_key("discard")
paul@299 583
        invite = args.has_key("invite")
paul@299 584
        cancel = args.has_key("cancel")
paul@299 585
        save = args.has_key("save")
paul@299 586
paul@299 587
        have_action = reply or discard or invite or cancel or save
paul@299 588
paul@299 589
        if not have_action:
paul@299 590
            return ["action"]
paul@121 591
paul@212 592
        # Update the object.
paul@212 593
paul@212 594
        if args.has_key("summary"):
paul@213 595
            obj["SUMMARY"] = [(args["summary"][0], {})]
paul@212 596
paul@309 597
        attendees = uri_dict(obj.get_value_map("ATTENDEE"))
paul@308 598
paul@257 599
        if args.has_key("partstat"):
paul@372 600
            if attendees.has_key(self.user):
paul@372 601
                attendees[self.user]["PARTSTAT"] = args["partstat"][0]
paul@372 602
                if attendees[self.user].has_key("RSVP"):
paul@372 603
                    del attendees[self.user]["RSVP"]
paul@286 604
paul@309 605
        is_organiser = get_uri(obj.get_value("ORGANIZER")) == self.user
paul@286 606
paul@286 607
        # Obtain the user's timezone and process datetime values.
paul@286 608
paul@286 609
        update = False
paul@286 610
paul@286 611
        if is_organiser:
paul@300 612
            dtend_enabled = args.get("dtend-control", [None])[0] == "enable"
paul@300 613
            dttimes_enabled = args.get("dttimes-control", [None])[0] == "enable"
paul@300 614
paul@300 615
            t = self.handle_date_controls("dtstart", dttimes_enabled)
paul@286 616
            if t:
paul@290 617
                dtstart, attr = t
paul@300 618
                update = self.set_datetime_in_object(dtstart, attr.get("TZID"), "DTSTART", obj) or update
paul@286 619
            else:
paul@299 620
                return ["dtstart"]
paul@290 621
paul@290 622
            # Handle specified end datetimes.
paul@290 623
paul@300 624
            if dtend_enabled:
paul@300 625
                t = self.handle_date_controls("dtend", dttimes_enabled)
paul@290 626
                if t:
paul@290 627
                    dtend, attr = t
paul@290 628
paul@290 629
                    # Convert end dates to iCalendar "next day" dates.
paul@286 630
paul@290 631
                    if not isinstance(dtend, datetime):
paul@290 632
                        dtend += timedelta(1)
paul@300 633
                    update = self.set_datetime_in_object(dtend, attr.get("TZID"), "DTEND", obj) or update
paul@290 634
                else:
paul@299 635
                    return ["dtend"]
paul@290 636
paul@299 637
            # Otherwise, treat the end date as the start date. Datetimes are
paul@299 638
            # handled by making the event occupy the rest of the day.
paul@290 639
paul@286 640
            else:
paul@299 641
                dtend = dtstart + timedelta(1)
paul@290 642
                if isinstance(dtstart, datetime):
paul@299 643
                    dtend = get_start_of_day(dtend, attr["TZID"])
paul@300 644
                update = self.set_datetime_in_object(dtend, attr.get("TZID"), "DTEND", obj) or update
paul@286 645
paul@290 646
            if dtstart >= dtend:
paul@299 647
                return ["dtstart", "dtend"]
paul@257 648
paul@315 649
        # Obtain any participants to be added or removed.
paul@315 650
paul@315 651
        removed = args.get("remove")
paul@315 652
        added = args.get("added")
paul@315 653
paul@212 654
        # Process any action.
paul@212 655
paul@299 656
        handled = True
paul@121 657
paul@266 658
        if reply or invite or cancel:
paul@121 659
paul@212 660
            handler = ManagerHandler(obj, self.user, self.messenger)
paul@121 661
paul@212 662
            # Process the object and remove it from the list of requests.
paul@121 663
paul@266 664
            if reply and handler.process_received_request(update) or \
paul@308 665
               is_organiser and (invite or cancel) and \
paul@315 666
               handler.process_created_request(invite and "REQUEST" or "CANCEL", update, removed, added):
paul@121 667
paul@121 668
                self.remove_request(uid)
paul@121 669
paul@257 670
        # Save single user events.
paul@121 671
paul@257 672
        elif save:
paul@370 673
            to_cancel = self.update_attendees(obj, added, removed)
paul@361 674
            self.store.set_event(self.user, uid, None, node=obj.to_node())
paul@343 675
            self.update_freebusy(uid, None, obj=obj)
paul@257 676
            self.remove_request(uid)
paul@121 677
paul@257 678
        # Remove the request and the object.
paul@257 679
paul@257 680
        elif discard:
paul@296 681
            self.remove_from_freebusy(uid)
paul@234 682
            self.remove_event(uid)
paul@121 683
            self.remove_request(uid)
paul@121 684
paul@121 685
        else:
paul@123 686
            handled = False
paul@121 687
paul@212 688
        # Upon handling an action, redirect to the main page.
paul@212 689
paul@123 690
        if handled:
paul@123 691
            self.redirect(self.env.get_path())
paul@123 692
paul@299 693
        return None
paul@121 694
paul@300 695
    def handle_date_controls(self, name, with_time=True):
paul@155 696
paul@155 697
        """
paul@286 698
        Handle date control information for fields starting with 'name',
paul@290 699
        returning a (datetime, attr) tuple or None if the fields cannot be used
paul@286 700
        to construct a datetime object.
paul@155 701
        """
paul@155 702
paul@286 703
        args = self.env.get_args()
paul@286 704
paul@286 705
        if args.has_key("%s-date" % name):
paul@286 706
            date = args["%s-date" % name][0]
paul@300 707
paul@300 708
            if with_time:
paul@300 709
                hour = args.get("%s-hour" % name, [None])[0]
paul@300 710
                minute = args.get("%s-minute" % name, [None])[0]
paul@300 711
                second = args.get("%s-second" % name, [None])[0]
paul@300 712
                tzid = args.get("%s-tzid" % name, [self.get_tzid()])[0]
paul@286 713
paul@300 714
                time = (hour or minute or second) and "T%s%s%s" % (hour, minute, second) or ""
paul@300 715
                value = "%s%s" % (date, time)
paul@300 716
                attr = {"TZID" : tzid, "VALUE" : "DATE-TIME"}
paul@300 717
                dt = get_datetime(value, attr)
paul@300 718
            else:
paul@300 719
                attr = {"VALUE" : "DATE"}
paul@300 720
                dt = get_datetime(date)
paul@300 721
paul@286 722
            if dt:
paul@290 723
                return dt, attr
paul@286 724
paul@286 725
        return None
paul@286 726
paul@286 727
    def set_datetime_in_object(self, dt, tzid, property, obj):
paul@286 728
paul@286 729
        """
paul@286 730
        Set 'dt' and 'tzid' for the given 'property' in 'obj', returning whether
paul@286 731
        an update has occurred.
paul@286 732
        """
paul@286 733
paul@286 734
        if dt:
paul@286 735
            old_value = obj.get_value(property)
paul@286 736
            obj[property] = [get_datetime_item(dt, tzid)]
paul@286 737
            return format_datetime(dt) != old_value
paul@286 738
paul@286 739
        return False
paul@286 740
paul@286 741
    # Page fragment methods.
paul@286 742
paul@286 743
    def show_request_controls(self, obj):
paul@286 744
paul@286 745
        "Show form controls for a request concerning 'obj'."
paul@286 746
paul@212 747
        page = self.page
paul@326 748
        args = self.env.get_args()
paul@212 749
paul@309 750
        is_organiser = get_uri(obj.get_value("ORGANIZER")) == self.user
paul@207 751
paul@326 752
        attendees = uri_values((obj.get_values("ATTENDEE") or []) + args.get("attendee", []))
paul@326 753
        is_attendee = self.user in attendees
paul@121 754
paul@343 755
        is_request = (obj.get_value("UID"), obj.get_value("RECURRENCE-ID")) in self._get_requests()
paul@276 756
paul@257 757
        have_other_attendees = len(attendees) > (is_attendee and 1 or 0)
paul@257 758
paul@257 759
        # Show appropriate options depending on the role of the user.
paul@257 760
paul@257 761
        if is_attendee and not is_organiser:
paul@286 762
            page.p("An action is required for this request:")
paul@253 763
paul@255 764
            page.p()
paul@266 765
            page.input(name="reply", type="submit", value="Reply")
paul@255 766
            page.add(" ")
paul@255 767
            page.input(name="discard", type="submit", value="Discard")
paul@255 768
            page.p.close()
paul@207 769
paul@255 770
        if is_organiser:
paul@257 771
            if have_other_attendees:
paul@286 772
                page.p("As organiser, you can perform the following:")
paul@255 773
paul@257 774
                page.p()
paul@257 775
                page.input(name="invite", type="submit", value="Invite")
paul@257 776
                page.add(" ")
paul@276 777
                if is_request:
paul@276 778
                    page.input(name="discard", type="submit", value="Discard")
paul@276 779
                else:
paul@276 780
                    page.input(name="cancel", type="submit", value="Cancel")
paul@257 781
                page.p.close()
paul@257 782
            else:
paul@326 783
                page.p("As attendee, you can perform the following:")
paul@326 784
paul@257 785
                page.p()
paul@257 786
                page.input(name="save", type="submit", value="Save")
paul@276 787
                page.add(" ")
paul@276 788
                page.input(name="discard", type="submit", value="Discard")
paul@257 789
                page.p.close()
paul@207 790
paul@287 791
    property_items = [
paul@287 792
        ("SUMMARY", "Summary"),
paul@287 793
        ("DTSTART", "Start"),
paul@287 794
        ("DTEND", "End"),
paul@287 795
        ("ORGANIZER", "Organiser"),
paul@287 796
        ("ATTENDEE", "Attendee"),
paul@287 797
        ]
paul@210 798
paul@257 799
    partstat_items = [
paul@257 800
        ("NEEDS-ACTION", "Not confirmed"),
paul@257 801
        ("ACCEPTED", "Attending"),
paul@259 802
        ("TENTATIVE", "Tentatively attending"),
paul@257 803
        ("DECLINED", "Not attending"),
paul@277 804
        ("DELEGATED", "Delegated"),
paul@355 805
        (None, "Not indicated"),
paul@257 806
        ]
paul@257 807
paul@299 808
    def show_object_on_page(self, uid, obj, error=None):
paul@121 809
paul@121 810
        """
paul@121 811
        Show the calendar object with the given 'uid' and representation 'obj'
paul@299 812
        on the current page. If 'error' is given, show a suitable message.
paul@121 813
        """
paul@121 814
paul@210 815
        page = self.page
paul@212 816
        page.form(method="POST")
paul@210 817
paul@363 818
        args = self.env.get_args()
paul@363 819
paul@154 820
        # Obtain the user's timezone.
paul@154 821
paul@244 822
        tzid = self.get_tzid()
paul@121 823
paul@363 824
        # Obtain basic event information, showing any necessary editing controls.
paul@315 825
paul@363 826
        is_organiser = get_uri(obj.get_value("ORGANIZER")) == self.user
paul@315 827
paul@363 828
        if is_organiser:
paul@363 829
            (dtstart, dtstart_attr), (dtend, dtend_attr) = self.show_object_organiser_controls(obj)
paul@363 830
            new_attendees, new_attendee = self.handle_new_attendees(obj)
paul@290 831
        else:
paul@290 832
            dtstart, dtstart_attr = obj.get_datetime_item("DTSTART")
paul@290 833
            dtend, dtend_attr = obj.get_datetime_item("DTEND")
paul@363 834
            new_attendees = []
paul@363 835
            new_attendee = ""
paul@300 836
paul@121 837
        # Provide a summary of the object.
paul@121 838
paul@230 839
        page.table(class_="object", cellspacing=5, cellpadding=5)
paul@212 840
        page.thead()
paul@212 841
        page.tr()
paul@286 842
        page.th("Event", class_="mainheading", colspan=2)
paul@212 843
        page.tr.close()
paul@212 844
        page.thead.close()
paul@212 845
        page.tbody()
paul@121 846
paul@287 847
        for name, label in self.property_items:
paul@210 848
            page.tr()
paul@210 849
paul@210 850
            # Handle datetimes specially.
paul@210 851
paul@147 852
            if name in ["DTSTART", "DTEND"]:
paul@299 853
                field = name.lower()
paul@290 854
paul@299 855
                page.th(label, class_="objectheading %s%s" % (field, error and field in error and " error" or ""))
paul@290 856
paul@297 857
                # Obtain the datetime.
paul@297 858
paul@290 859
                if name == "DTSTART":
paul@290 860
                    dt, attr, event_tzid = dtstart, dtstart_attr, dtstart_attr.get("TZID", tzid)
paul@297 861
paul@297 862
                # Where no end datetime exists, use the start datetime as the
paul@297 863
                # basis of any potential datetime specified if dt-control is
paul@297 864
                # set.
paul@297 865
paul@290 866
                else:
paul@293 867
                    dt, attr, event_tzid = dtend or dtstart, dtend_attr or dtstart_attr, (dtend_attr or dtstart_attr).get("TZID", tzid)
paul@293 868
paul@300 869
                # Show controls for editing as organiser.
paul@286 870
paul@286 871
                if is_organiser:
paul@300 872
                    value = format_datetime(dt)
paul@300 873
paul@299 874
                    page.td(class_="objectvalue %s" % field)
paul@290 875
                    if name == "DTEND":
paul@300 876
                        page.div(class_="dt disabled")
paul@290 877
                        page.label("Specify end date", for_="dtend-enable", class_="enable")
paul@290 878
                        page.div.close()
paul@290 879
paul@300 880
                    page.div(class_="dt enabled")
paul@299 881
                    self._show_date_controls(field, value, attr, tzid)
paul@300 882
                    if name == "DTSTART":
paul@300 883
                        page.label("Specify times", for_="dttimes-enable", class_="time disabled enable")
paul@300 884
                        page.label("Specify dates only", for_="dttimes-disable", class_="time enabled disable")
paul@300 885
                    elif name == "DTEND":
paul@290 886
                        page.label("End on same day", for_="dtend-disable", class_="disable")
paul@290 887
                    page.div.close()
paul@290 888
paul@286 889
                    page.td.close()
paul@300 890
paul@300 891
                # Show a label as attendee.
paul@300 892
paul@286 893
                else:
paul@300 894
                    page.td(self.format_datetime(dt, "full"))
paul@286 895
paul@210 896
                page.tr.close()
paul@210 897
paul@212 898
            # Handle the summary specially.
paul@212 899
paul@212 900
            elif name == "SUMMARY":
paul@290 901
                value = args.get("summary", [obj.get_value(name)])[0]
paul@290 902
paul@212 903
                page.th(label, class_="objectheading")
paul@286 904
                page.td()
paul@269 905
                if is_organiser:
paul@269 906
                    page.input(name="summary", type="text", value=value, size=80)
paul@269 907
                else:
paul@269 908
                    page.add(value)
paul@212 909
                page.td.close()
paul@212 910
                page.tr.close()
paul@212 911
paul@210 912
            # Handle potentially many values.
paul@210 913
paul@147 914
            else:
paul@326 915
                items = obj.get_items(name) or []
paul@315 916
                rowspan = len(items)
paul@315 917
paul@315 918
                if name == "ATTENDEE":
paul@315 919
                    rowspan += len(new_attendees) + 1
paul@326 920
                elif not items:
paul@326 921
                    continue
paul@315 922
paul@315 923
                page.th(label, class_="objectheading", rowspan=rowspan)
paul@210 924
paul@210 925
                first = True
paul@210 926
paul@308 927
                for i, (value, attr) in enumerate(items):
paul@210 928
                    if not first:
paul@210 929
                        page.tr()
paul@210 930
                    else:
paul@210 931
                        first = False
paul@121 932
paul@372 933
                    if name == "ATTENDEE":
paul@309 934
                        value = get_uri(value)
paul@309 935
paul@326 936
                        page.td(class_="objectvalue")
paul@265 937
                        page.add(value)
paul@286 938
                        page.add(" ")
paul@210 939
paul@210 940
                        partstat = attr.get("PARTSTAT")
paul@372 941
                        if value == self.user:
paul@315 942
                            self._show_menu("partstat", partstat, self.partstat_items, "partstat")
paul@265 943
                        else:
paul@286 944
                            page.span(dict(self.partstat_items).get(partstat, ""), class_="partstat")
paul@308 945
paul@372 946
                        if is_organiser:
paul@315 947
                            if value in args.get("remove", []):
paul@315 948
                                page.input(name="remove", type="checkbox", value=value, id="remove-%d" % i, class_="remove", checked="checked")
paul@315 949
                            else:
paul@315 950
                                page.input(name="remove", type="checkbox", value=value, id="remove-%d" % i, class_="remove")
paul@308 951
                            page.label("Remove", for_="remove-%d" % i, class_="remove")
paul@308 952
                            page.label("Uninvited", for_="remove-%d" % i, class_="removed")
paul@308 953
paul@265 954
                    else:
paul@326 955
                        page.td(class_="objectvalue")
paul@265 956
                        page.add(value)
paul@210 957
paul@210 958
                    page.td.close()
paul@210 959
                    page.tr.close()
paul@210 960
paul@315 961
                # Allow more attendees to be specified.
paul@315 962
paul@315 963
                if is_organiser and name == "ATTENDEE":
paul@315 964
                    for i, attendee in enumerate(new_attendees):
paul@326 965
                        if not first:
paul@326 966
                            page.tr()
paul@326 967
                        else:
paul@326 968
                            first = False
paul@326 969
paul@315 970
                        page.td()
paul@315 971
                        page.input(name="added", type="value", value=attendee)
paul@315 972
                        page.input(name="removenew", type="submit", value=attendee, id="removenew-%d" % i, class_="remove")
paul@315 973
                        page.label("Remove", for_="removenew-%d" % i, class_="remove")
paul@315 974
                        page.td.close()
paul@315 975
                        page.tr.close()
paul@326 976
paul@326 977
                    if not first:
paul@326 978
                        page.tr()
paul@326 979
paul@315 980
                    page.td()
paul@315 981
                    page.input(name="attendee", type="value", value=new_attendee)
paul@315 982
                    page.input(name="add", type="submit", value="add", id="add-%d" % i, class_="add")
paul@315 983
                    page.label("Add", for_="add-%d" % i, class_="add")
paul@315 984
                    page.td.close()
paul@315 985
                    page.tr.close()
paul@315 986
paul@212 987
        page.tbody.close()
paul@210 988
        page.table.close()
paul@121 989
paul@321 990
        self.show_recurrences(obj)
paul@307 991
        self.show_conflicting_events(uid, obj)
paul@307 992
        self.show_request_controls(obj)
paul@307 993
paul@307 994
        page.form.close()
paul@307 995
paul@363 996
    def handle_new_attendees(self, obj):
paul@363 997
paul@363 998
        "Add or remove new attendees. This does not affect the stored object."
paul@363 999
paul@363 1000
        args = self.env.get_args()
paul@363 1001
paul@363 1002
        existing_attendees = uri_values(obj.get_values("ATTENDEE") or [])
paul@363 1003
        new_attendees = args.get("added", [])
paul@363 1004
        new_attendee = args.get("attendee", [""])[0]
paul@363 1005
paul@363 1006
        if args.has_key("add"):
paul@363 1007
            if new_attendee.strip():
paul@363 1008
                new_attendee = get_uri(new_attendee.strip())
paul@363 1009
                if new_attendee not in new_attendees and new_attendee not in existing_attendees:
paul@363 1010
                    new_attendees.append(new_attendee)
paul@363 1011
                new_attendee = ""
paul@363 1012
paul@363 1013
        if args.has_key("removenew"):
paul@363 1014
            removed_attendee = args["removenew"][0]
paul@363 1015
            if removed_attendee in new_attendees:
paul@363 1016
                new_attendees.remove(removed_attendee)
paul@363 1017
paul@363 1018
        return new_attendees, new_attendee
paul@363 1019
paul@363 1020
    def show_object_organiser_controls(self, obj):
paul@363 1021
paul@363 1022
        "Provide controls to change the displayed object 'obj'."
paul@363 1023
paul@363 1024
        page = self.page
paul@363 1025
        args = self.env.get_args()
paul@363 1026
paul@363 1027
        # Configure the start and end datetimes.
paul@363 1028
paul@363 1029
        dtend_control = args.get("dtend-control", [None])[0]
paul@363 1030
        dttimes_control = args.get("dttimes-control", [None])[0]
paul@363 1031
        with_time = dttimes_control == "enable"
paul@363 1032
paul@363 1033
        t = self.handle_date_controls("dtstart", with_time)
paul@363 1034
        if t:
paul@363 1035
            dtstart, dtstart_attr = t
paul@363 1036
        else:
paul@363 1037
            dtstart, dtstart_attr = obj.get_datetime_item("DTSTART")
paul@363 1038
paul@363 1039
        if dtend_control == "enable":
paul@363 1040
            t = self.handle_date_controls("dtend", with_time)
paul@363 1041
            if t:
paul@363 1042
                dtend, dtend_attr = t
paul@363 1043
            else:
paul@363 1044
                dtend, dtend_attr = None, {}
paul@363 1045
        elif dtend_control == "disable":
paul@363 1046
            dtend, dtend_attr = None, {}
paul@363 1047
        else:
paul@363 1048
            dtend, dtend_attr = obj.get_datetime_item("DTEND")
paul@363 1049
paul@363 1050
        # Change end dates to refer to the actual dates, not the iCalendar
paul@363 1051
        # "next day" dates.
paul@363 1052
paul@363 1053
        if dtend and not isinstance(dtend, datetime):
paul@363 1054
            dtend -= timedelta(1)
paul@363 1055
paul@363 1056
        # Show the end datetime controls if already active or if an object needs
paul@363 1057
        # them.
paul@363 1058
paul@363 1059
        dtend_enabled = dtend_control == "enable" or isinstance(dtend, datetime) or dtstart != dtend
paul@363 1060
        dttimes_enabled = dttimes_control == "enable" or isinstance(dtstart, datetime) or isinstance(dtend, datetime)
paul@363 1061
paul@363 1062
        if dtend_enabled:
paul@363 1063
            page.input(name="dtend-control", type="radio", value="enable", id="dtend-enable", checked="checked")
paul@363 1064
            page.input(name="dtend-control", type="radio", value="disable", id="dtend-disable")
paul@363 1065
        else:
paul@363 1066
            page.input(name="dtend-control", type="radio", value="enable", id="dtend-enable")
paul@363 1067
            page.input(name="dtend-control", type="radio", value="disable", id="dtend-disable", checked="checked")
paul@363 1068
paul@363 1069
        if dttimes_enabled:
paul@363 1070
            page.input(name="dttimes-control", type="radio", value="enable", id="dttimes-enable", checked="checked")
paul@363 1071
            page.input(name="dttimes-control", type="radio", value="disable", id="dttimes-disable")
paul@363 1072
        else:
paul@363 1073
            page.input(name="dttimes-control", type="radio", value="enable", id="dttimes-enable")
paul@363 1074
            page.input(name="dttimes-control", type="radio", value="disable", id="dttimes-disable", checked="checked")
paul@363 1075
paul@363 1076
        return (dtstart, dtstart_attr), (dtend, dtend_attr)
paul@363 1077
paul@321 1078
    def show_recurrences(self, obj):
paul@321 1079
paul@321 1080
        "Show recurrences for the object having the given representation 'obj'."
paul@321 1081
paul@321 1082
        page = self.page
paul@321 1083
paul@357 1084
        # Obtain any parent object if this object is a specific recurrence.
paul@357 1085
paul@357 1086
        recurrenceid = format_datetime(obj.get_utc_datetime("RECURRENCE-ID"))
paul@357 1087
paul@357 1088
        if recurrenceid:
paul@357 1089
            obj = self._get_object(obj.get_value("UID"))
paul@357 1090
            if not obj:
paul@357 1091
                return
paul@357 1092
paul@357 1093
            page.p("This event modifies a recurring event.")
paul@357 1094
paul@360 1095
        # Obtain the periods associated with the event in the user's time zone.
paul@321 1096
paul@360 1097
        periods = obj.get_periods(self.get_tzid(), self.get_window_end())
paul@321 1098
paul@321 1099
        if len(periods) == 1:
paul@321 1100
            return
paul@321 1101
paul@360 1102
        page.p("This event occurs on the following occasions within the next %d days:" % self.get_window_size())
paul@321 1103
paul@321 1104
        page.table(cellspacing=5, cellpadding=5, class_="conflicts")
paul@321 1105
        page.thead()
paul@321 1106
        page.tr()
paul@321 1107
        page.th("Start")
paul@321 1108
        page.th("End")
paul@321 1109
        page.tr.close()
paul@321 1110
        page.thead.close()
paul@321 1111
        page.tbody()
paul@321 1112
paul@321 1113
        for start, end in periods:
paul@357 1114
            start_utc = format_datetime(to_timezone(start, "UTC"))
paul@357 1115
            css = recurrenceid and start_utc == recurrenceid and "replaced" or ""
paul@357 1116
paul@321 1117
            page.tr()
paul@357 1118
            page.td(self.format_datetime(start, "long"), class_=css)
paul@357 1119
            page.td(self.format_datetime(end, "long"), class_=css)
paul@321 1120
            page.tr.close()
paul@321 1121
paul@321 1122
        page.tbody.close()
paul@321 1123
        page.table.close()
paul@321 1124
paul@307 1125
    def show_conflicting_events(self, uid, obj):
paul@307 1126
paul@307 1127
        """
paul@307 1128
        Show conflicting events for the object having the given 'uid' and
paul@307 1129
        representation 'obj'.
paul@307 1130
        """
paul@307 1131
paul@307 1132
        page = self.page
paul@307 1133
paul@307 1134
        # Obtain the user's timezone.
paul@307 1135
paul@307 1136
        tzid = self.get_tzid()
paul@307 1137
paul@213 1138
        dtstart = format_datetime(obj.get_utc_datetime("DTSTART"))
paul@213 1139
        dtend = format_datetime(obj.get_utc_datetime("DTEND"))
paul@121 1140
paul@121 1141
        # Indicate whether there are conflicting events.
paul@121 1142
paul@121 1143
        freebusy = self.store.get_freebusy(self.user)
paul@121 1144
paul@121 1145
        if freebusy:
paul@121 1146
paul@121 1147
            # Obtain any time zone details from the suggested event.
paul@121 1148
paul@213 1149
            _dtstart, attr = obj.get_item("DTSTART")
paul@154 1150
            tzid = attr.get("TZID", tzid)
paul@121 1151
paul@121 1152
            # Show any conflicts.
paul@121 1153
paul@302 1154
            conflicts = [t for t in have_conflict(freebusy, [(dtstart, dtend)], True) if t[2] != uid]
paul@154 1155
paul@302 1156
            if conflicts:
paul@302 1157
                page.p("This event conflicts with others:")
paul@154 1158
paul@302 1159
                page.table(cellspacing=5, cellpadding=5, class_="conflicts")
paul@302 1160
                page.thead()
paul@302 1161
                page.tr()
paul@302 1162
                page.th("Event")
paul@302 1163
                page.th("Start")
paul@302 1164
                page.th("End")
paul@302 1165
                page.tr.close()
paul@302 1166
                page.thead.close()
paul@302 1167
                page.tbody()
paul@302 1168
paul@302 1169
                for t in conflicts:
paul@343 1170
                    start, end, found_uid, transp, found_recurrenceid = t[:5]
paul@302 1171
paul@302 1172
                    # Provide details of any conflicting event.
paul@302 1173
paul@302 1174
                    start = self.format_datetime(to_timezone(get_datetime(start), tzid), "long")
paul@302 1175
                    end = self.format_datetime(to_timezone(get_datetime(end), tzid), "long")
paul@302 1176
paul@302 1177
                    page.tr()
paul@154 1178
paul@154 1179
                    # Show the event summary for the conflicting event.
paul@154 1180
paul@302 1181
                    page.td()
paul@302 1182
paul@343 1183
                    found_obj = self._get_object(found_uid, found_recurrenceid)
paul@154 1184
                    if found_obj:
paul@345 1185
                        page.a(found_obj.get_value("SUMMARY"), href=self.link_to(found_uid))
paul@302 1186
                    else:
paul@302 1187
                        page.add("No details available")
paul@302 1188
paul@302 1189
                    page.td.close()
paul@302 1190
paul@302 1191
                    page.td(start)
paul@302 1192
                    page.td(end)
paul@302 1193
paul@302 1194
                    page.tr.close()
paul@302 1195
paul@302 1196
                page.tbody.close()
paul@302 1197
                page.table.close()
paul@121 1198
paul@121 1199
    def show_requests_on_page(self):
paul@69 1200
paul@69 1201
        "Show requests for the current user."
paul@69 1202
paul@69 1203
        # NOTE: This list could be more informative, but it is envisaged that
paul@69 1204
        # NOTE: the requests would be visited directly anyway.
paul@69 1205
paul@121 1206
        requests = self._get_requests()
paul@70 1207
paul@185 1208
        self.page.div(id="pending-requests")
paul@185 1209
paul@80 1210
        if requests:
paul@114 1211
            self.page.p("Pending requests:")
paul@114 1212
paul@80 1213
            self.page.ul()
paul@69 1214
paul@343 1215
            for uid, recurrenceid in requests:
paul@343 1216
                obj = self._get_object(uid, recurrenceid)
paul@165 1217
                if obj:
paul@165 1218
                    self.page.li()
paul@343 1219
                    self.page.a(obj.get_value("SUMMARY"), href="#request-%s-%s" % (uid, recurrenceid or ""))
paul@165 1220
                    self.page.li.close()
paul@80 1221
paul@80 1222
            self.page.ul.close()
paul@80 1223
paul@80 1224
        else:
paul@80 1225
            self.page.p("There are no pending requests.")
paul@69 1226
paul@185 1227
        self.page.div.close()
paul@185 1228
paul@185 1229
    def show_participants_on_page(self):
paul@185 1230
paul@185 1231
        "Show participants for scheduling purposes."
paul@185 1232
paul@185 1233
        args = self.env.get_args()
paul@185 1234
        participants = args.get("participants", [])
paul@185 1235
paul@185 1236
        try:
paul@185 1237
            for name, value in args.items():
paul@185 1238
                if name.startswith("remove-participant-"):
paul@185 1239
                    i = int(name[len("remove-participant-"):])
paul@185 1240
                    del participants[i]
paul@185 1241
                    break
paul@185 1242
        except ValueError:
paul@185 1243
            pass
paul@185 1244
paul@185 1245
        # Trim empty participants.
paul@185 1246
paul@185 1247
        while participants and not participants[-1].strip():
paul@185 1248
            participants.pop()
paul@185 1249
paul@185 1250
        # Show any specified participants together with controls to remove and
paul@185 1251
        # add participants.
paul@185 1252
paul@185 1253
        self.page.div(id="participants")
paul@185 1254
paul@185 1255
        self.page.p("Participants for scheduling:")
paul@185 1256
paul@185 1257
        for i, participant in enumerate(participants):
paul@185 1258
            self.page.p()
paul@185 1259
            self.page.input(name="participants", type="text", value=participant)
paul@185 1260
            self.page.input(name="remove-participant-%d" % i, type="submit", value="Remove")
paul@185 1261
            self.page.p.close()
paul@185 1262
paul@185 1263
        self.page.p()
paul@185 1264
        self.page.input(name="participants", type="text")
paul@185 1265
        self.page.input(name="add-participant", type="submit", value="Add")
paul@185 1266
        self.page.p.close()
paul@185 1267
paul@185 1268
        self.page.div.close()
paul@185 1269
paul@185 1270
        return participants
paul@185 1271
paul@121 1272
    # Full page output methods.
paul@70 1273
paul@121 1274
    def show_object(self, path_info):
paul@70 1275
paul@121 1276
        "Show an object request using the given 'path_info' for the current user."
paul@70 1277
paul@345 1278
        uid, recurrenceid = self._get_identifiers(path_info)
paul@345 1279
        obj = self._get_object(uid, recurrenceid)
paul@121 1280
paul@121 1281
        if not obj:
paul@70 1282
            return False
paul@70 1283
paul@299 1284
        error = self.handle_request(uid, obj)
paul@77 1285
paul@299 1286
        if not error:
paul@123 1287
            return True
paul@73 1288
paul@123 1289
        self.new_page(title="Event")
paul@299 1290
        self.show_object_on_page(uid, obj, error)
paul@73 1291
paul@70 1292
        return True
paul@70 1293
paul@114 1294
    def show_calendar(self):
paul@114 1295
paul@114 1296
        "Show the calendar for the current user."
paul@114 1297
paul@202 1298
        handled = self.handle_newevent()
paul@202 1299
paul@114 1300
        self.new_page(title="Calendar")
paul@162 1301
        page = self.page
paul@162 1302
paul@196 1303
        # Form controls are used in various places on the calendar page.
paul@196 1304
paul@196 1305
        page.form(method="POST")
paul@196 1306
paul@121 1307
        self.show_requests_on_page()
paul@185 1308
        participants = self.show_participants_on_page()
paul@114 1309
paul@196 1310
        # Show a button for scheduling a new event.
paul@196 1311
paul@230 1312
        page.p(class_="controls")
paul@313 1313
        page.input(name="newevent", type="submit", value="New event", id="newevent", accesskey="N")
paul@258 1314
        page.input(name="reset", type="submit", value="Clear selections", id="reset")
paul@196 1315
        page.p.close()
paul@196 1316
paul@280 1317
        # Show controls for hiding empty days and busy slots.
paul@203 1318
        # The positioning of the control, paragraph and table are important here.
paul@203 1319
paul@288 1320
        page.input(name="showdays", type="checkbox", value="show", id="showdays", accesskey="D")
paul@282 1321
        page.input(name="hidebusy", type="checkbox", value="hide", id="hidebusy", accesskey="B")
paul@203 1322
paul@230 1323
        page.p(class_="controls")
paul@237 1324
        page.label("Hide busy time periods", for_="hidebusy", class_="hidebusy enable")
paul@237 1325
        page.label("Show busy time periods", for_="hidebusy", class_="hidebusy disable")
paul@288 1326
        page.label("Show empty days", for_="showdays", class_="showdays disable")
paul@288 1327
        page.label("Hide empty days", for_="showdays", class_="showdays enable")
paul@203 1328
        page.p.close()
paul@203 1329
paul@114 1330
        freebusy = self.store.get_freebusy(self.user)
paul@114 1331
paul@114 1332
        if not freebusy:
paul@114 1333
            page.p("No events scheduled.")
paul@114 1334
            return
paul@114 1335
paul@154 1336
        # Obtain the user's timezone.
paul@147 1337
paul@244 1338
        tzid = self.get_tzid()
paul@147 1339
paul@114 1340
        # Day view: start at the earliest known day and produce days until the
paul@114 1341
        # latest known day, perhaps with expandable sections of empty days.
paul@114 1342
paul@114 1343
        # Month view: start at the earliest known month and produce months until
paul@114 1344
        # the latest known month, perhaps with expandable sections of empty
paul@114 1345
        # months.
paul@114 1346
paul@114 1347
        # Details of users to invite to new events could be superimposed on the
paul@114 1348
        # calendar.
paul@114 1349
paul@185 1350
        # Requests are listed and linked to their tentative positions in the
paul@185 1351
        # calendar. Other participants are also shown.
paul@185 1352
paul@185 1353
        request_summary = self._get_request_summary()
paul@185 1354
paul@185 1355
        period_groups = [request_summary, freebusy]
paul@185 1356
        period_group_types = ["request", "freebusy"]
paul@185 1357
        period_group_sources = ["Pending requests", "Your schedule"]
paul@185 1358
paul@187 1359
        for i, participant in enumerate(participants):
paul@185 1360
            period_groups.append(self.store.get_freebusy_for_other(self.user, get_uri(participant)))
paul@187 1361
            period_group_types.append("freebusy-part%d" % i)
paul@185 1362
            period_group_sources.append(participant)
paul@114 1363
paul@162 1364
        groups = []
paul@162 1365
        group_columns = []
paul@185 1366
        group_types = period_group_types
paul@185 1367
        group_sources = period_group_sources
paul@162 1368
        all_points = set()
paul@162 1369
paul@162 1370
        # Obtain time point information for each group of periods.
paul@162 1371
paul@185 1372
        for periods in period_groups:
paul@162 1373
            periods = convert_periods(periods, tzid)
paul@162 1374
paul@162 1375
            # Get the time scale with start and end points.
paul@162 1376
paul@162 1377
            scale = get_scale(periods)
paul@162 1378
paul@162 1379
            # Get the time slots for the periods.
paul@162 1380
paul@162 1381
            slots = get_slots(scale)
paul@162 1382
paul@162 1383
            # Add start of day time points for multi-day periods.
paul@162 1384
paul@244 1385
            add_day_start_points(slots, tzid)
paul@162 1386
paul@162 1387
            # Record the slots and all time points employed.
paul@162 1388
paul@162 1389
            groups.append(slots)
paul@201 1390
            all_points.update([point for point, active in slots])
paul@162 1391
paul@162 1392
        # Partition the groups into days.
paul@162 1393
paul@162 1394
        days = {}
paul@162 1395
        partitioned_groups = []
paul@171 1396
        partitioned_group_types = []
paul@185 1397
        partitioned_group_sources = []
paul@162 1398
paul@185 1399
        for slots, group_type, group_source in zip(groups, group_types, group_sources):
paul@162 1400
paul@162 1401
            # Propagate time points to all groups of time slots.
paul@162 1402
paul@162 1403
            add_slots(slots, all_points)
paul@162 1404
paul@162 1405
            # Count the number of columns employed by the group.
paul@162 1406
paul@162 1407
            columns = 0
paul@162 1408
paul@162 1409
            # Partition the time slots by day.
paul@162 1410
paul@162 1411
            partitioned = {}
paul@162 1412
paul@162 1413
            for day, day_slots in partition_by_day(slots).items():
paul@201 1414
                intervals = []
paul@201 1415
                last = None
paul@201 1416
paul@201 1417
                for point, active in day_slots:
paul@201 1418
                    columns = max(columns, len(active))
paul@201 1419
                    if last:
paul@201 1420
                        intervals.append((last, point))
paul@201 1421
                    last = point
paul@201 1422
paul@201 1423
                if last:
paul@201 1424
                    intervals.append((last, None))
paul@162 1425
paul@162 1426
                if not days.has_key(day):
paul@162 1427
                    days[day] = set()
paul@162 1428
paul@162 1429
                # Convert each partition to a mapping from points to active
paul@162 1430
                # periods.
paul@162 1431
paul@201 1432
                partitioned[day] = dict(day_slots)
paul@201 1433
paul@201 1434
                # Record the divisions or intervals within each day.
paul@201 1435
paul@201 1436
                days[day].update(intervals)
paul@162 1437
paul@194 1438
            if group_type != "request" or columns:
paul@194 1439
                group_columns.append(columns)
paul@194 1440
                partitioned_groups.append(partitioned)
paul@194 1441
                partitioned_group_types.append(group_type)
paul@194 1442
                partitioned_group_sources.append(group_source)
paul@114 1443
paul@279 1444
        # Add empty days.
paul@279 1445
paul@283 1446
        add_empty_days(days, tzid)
paul@279 1447
paul@279 1448
        # Show the controls permitting day selection.
paul@279 1449
paul@243 1450
        self.show_calendar_day_controls(days)
paul@243 1451
paul@279 1452
        # Show the calendar itself.
paul@279 1453
paul@230 1454
        page.table(cellspacing=5, cellpadding=5, class_="calendar")
paul@188 1455
        self.show_calendar_participant_headings(partitioned_group_types, partitioned_group_sources, group_columns)
paul@171 1456
        self.show_calendar_days(days, partitioned_groups, partitioned_group_types, group_columns)
paul@162 1457
        page.table.close()
paul@114 1458
paul@196 1459
        # End the form region.
paul@196 1460
paul@196 1461
        page.form.close()
paul@196 1462
paul@246 1463
    # More page fragment methods.
paul@246 1464
paul@243 1465
    def show_calendar_day_controls(self, days):
paul@243 1466
paul@243 1467
        "Show controls for the given 'days' in the calendar."
paul@243 1468
paul@243 1469
        page = self.page
paul@243 1470
        slots = self.env.get_args().get("slot", [])
paul@243 1471
paul@243 1472
        for day in days:
paul@243 1473
            value, identifier = self._day_value_and_identifier(day)
paul@243 1474
            self._slot_selector(value, identifier, slots)
paul@243 1475
paul@243 1476
        # Generate a dynamic stylesheet to allow day selections to colour
paul@243 1477
        # specific days.
paul@243 1478
        # NOTE: The style details need to be coordinated with the static
paul@243 1479
        # NOTE: stylesheet.
paul@243 1480
paul@243 1481
        page.style(type="text/css")
paul@243 1482
paul@243 1483
        for day in days:
paul@243 1484
            daystr = format_datetime(day)
paul@243 1485
            page.add("""\
paul@249 1486
input.newevent.selector#day-%s-:checked ~ table label.day.day-%s,
paul@249 1487
input.newevent.selector#day-%s-:checked ~ table label.timepoint.day-%s {
paul@243 1488
    background-color: #5f4;
paul@243 1489
    text-decoration: underline;
paul@243 1490
}
paul@243 1491
""" % (daystr, daystr, daystr, daystr))
paul@243 1492
paul@243 1493
        page.style.close()
paul@243 1494
paul@188 1495
    def show_calendar_participant_headings(self, group_types, group_sources, group_columns):
paul@186 1496
paul@186 1497
        """
paul@186 1498
        Show headings for the participants and other scheduling contributors,
paul@188 1499
        defined by 'group_types', 'group_sources' and 'group_columns'.
paul@186 1500
        """
paul@186 1501
paul@185 1502
        page = self.page
paul@185 1503
paul@188 1504
        page.colgroup(span=1, id="columns-timeslot")
paul@186 1505
paul@188 1506
        for group_type, columns in zip(group_types, group_columns):
paul@191 1507
            page.colgroup(span=max(columns, 1), id="columns-%s" % group_type)
paul@186 1508
paul@185 1509
        page.thead()
paul@185 1510
        page.tr()
paul@185 1511
        page.th("", class_="emptyheading")
paul@185 1512
paul@193 1513
        for group_type, source, columns in zip(group_types, group_sources, group_columns):
paul@193 1514
            page.th(source,
paul@193 1515
                class_=(group_type == "request" and "requestheading" or "participantheading"),
paul@193 1516
                colspan=max(columns, 1))
paul@185 1517
paul@185 1518
        page.tr.close()
paul@185 1519
        page.thead.close()
paul@185 1520
paul@171 1521
    def show_calendar_days(self, days, partitioned_groups, partitioned_group_types, group_columns):
paul@186 1522
paul@186 1523
        """
paul@186 1524
        Show calendar days, defined by a collection of 'days', the contributing
paul@186 1525
        period information as 'partitioned_groups' (partitioned by day), the
paul@186 1526
        'partitioned_group_types' indicating the kind of contribution involved,
paul@186 1527
        and the 'group_columns' defining the number of columns in each group.
paul@186 1528
        """
paul@186 1529
paul@162 1530
        page = self.page
paul@162 1531
paul@191 1532
        # Determine the number of columns required. Where participants provide
paul@191 1533
        # no columns for events, one still needs to be provided for the
paul@191 1534
        # participant itself.
paul@147 1535
paul@191 1536
        all_columns = sum([max(columns, 1) for columns in group_columns])
paul@191 1537
paul@191 1538
        # Determine the days providing time slots.
paul@191 1539
paul@162 1540
        all_days = days.items()
paul@162 1541
        all_days.sort()
paul@162 1542
paul@162 1543
        # Produce a heading and time points for each day.
paul@162 1544
paul@201 1545
        for day, intervals in all_days:
paul@279 1546
            groups_for_day = [partitioned.get(day) for partitioned in partitioned_groups]
paul@279 1547
            is_empty = True
paul@279 1548
paul@279 1549
            for slots in groups_for_day:
paul@279 1550
                if not slots:
paul@279 1551
                    continue
paul@279 1552
paul@279 1553
                for active in slots.values():
paul@279 1554
                    if active:
paul@279 1555
                        is_empty = False
paul@279 1556
                        break
paul@279 1557
paul@282 1558
            page.thead(class_="separator%s" % (is_empty and " empty" or ""))
paul@282 1559
            page.tr()
paul@243 1560
            page.th(class_="dayheading container", colspan=all_columns+1)
paul@239 1561
            self._day_heading(day)
paul@114 1562
            page.th.close()
paul@153 1563
            page.tr.close()
paul@186 1564
            page.thead.close()
paul@114 1565
paul@282 1566
            page.tbody(class_="points%s" % (is_empty and " empty" or ""))
paul@280 1567
            self.show_calendar_points(intervals, groups_for_day, partitioned_group_types, group_columns)
paul@186 1568
            page.tbody.close()
paul@185 1569
paul@280 1570
    def show_calendar_points(self, intervals, groups, group_types, group_columns):
paul@186 1571
paul@186 1572
        """
paul@201 1573
        Show the time 'intervals' along with period information from the given
paul@186 1574
        'groups', having the indicated 'group_types', each with the number of
paul@186 1575
        columns given by 'group_columns'.
paul@186 1576
        """
paul@186 1577
paul@162 1578
        page = self.page
paul@162 1579
paul@244 1580
        # Obtain the user's timezone.
paul@244 1581
paul@244 1582
        tzid = self.get_tzid()
paul@244 1583
paul@203 1584
        # Produce a row for each interval.
paul@162 1585
paul@201 1586
        intervals = list(intervals)
paul@201 1587
        intervals.sort()
paul@162 1588
paul@201 1589
        for point, endpoint in intervals:
paul@244 1590
            continuation = point == get_start_of_day(point, tzid)
paul@153 1591
paul@203 1592
            # Some rows contain no period details and are marked as such.
paul@203 1593
paul@283 1594
            have_active = reduce(lambda x, y: x or y, [slots and slots.get(point) for slots in groups], None)
paul@203 1595
paul@203 1596
            css = " ".join(
paul@203 1597
                ["slot"] +
paul@231 1598
                (have_active and ["busy"] or ["empty"]) +
paul@203 1599
                (continuation and ["daystart"] or [])
paul@203 1600
                )
paul@203 1601
paul@203 1602
            page.tr(class_=css)
paul@162 1603
            page.th(class_="timeslot")
paul@201 1604
            self._time_point(point, endpoint)
paul@162 1605
            page.th.close()
paul@162 1606
paul@162 1607
            # Obtain slots for the time point from each group.
paul@162 1608
paul@171 1609
            for columns, slots, group_type in zip(group_columns, groups, group_types):
paul@162 1610
                active = slots and slots.get(point)
paul@162 1611
paul@191 1612
                # Where no periods exist for the given time interval, generate
paul@191 1613
                # an empty cell. Where a participant provides no periods at all,
paul@191 1614
                # the colspan is adjusted to be 1, not 0.
paul@191 1615
paul@162 1616
                if not active:
paul@196 1617
                    page.td(class_="empty container", colspan=max(columns, 1))
paul@201 1618
                    self._empty_slot(point, endpoint)
paul@196 1619
                    page.td.close()
paul@162 1620
                    continue
paul@162 1621
paul@162 1622
                slots = slots.items()
paul@162 1623
                slots.sort()
paul@162 1624
                spans = get_spans(slots)
paul@162 1625
paul@278 1626
                empty = 0
paul@278 1627
paul@162 1628
                # Show a column for each active period.
paul@117 1629
paul@153 1630
                for t in active:
paul@185 1631
                    if t and len(t) >= 2:
paul@278 1632
paul@278 1633
                        # Flush empty slots preceding this one.
paul@278 1634
paul@278 1635
                        if empty:
paul@278 1636
                            page.td(class_="empty container", colspan=empty)
paul@278 1637
                            self._empty_slot(point, endpoint)
paul@278 1638
                            page.td.close()
paul@278 1639
                            empty = 0
paul@278 1640
paul@343 1641
                        start, end, uid, recurrenceid, key = get_freebusy_details(t)
paul@185 1642
                        span = spans[key]
paul@171 1643
paul@171 1644
                        # Produce a table cell only at the start of the period
paul@171 1645
                        # or when continued at the start of a day.
paul@171 1646
paul@153 1647
                        if point == start or continuation:
paul@153 1648
paul@343 1649
                            obj = self._get_object(uid, recurrenceid)
paul@275 1650
paul@195 1651
                            has_continued = continuation and point != start
paul@244 1652
                            will_continue = not ends_on_same_day(point, end, tzid)
paul@309 1653
                            is_organiser = obj and get_uri(obj.get_value("ORGANIZER")) == self.user
paul@275 1654
paul@195 1655
                            css = " ".join(
paul@195 1656
                                ["event"] +
paul@195 1657
                                (has_continued and ["continued"] or []) +
paul@275 1658
                                (will_continue and ["continues"] or []) +
paul@275 1659
                                (is_organiser and ["organising"] or ["attending"])
paul@195 1660
                                )
paul@195 1661
paul@189 1662
                            # Only anchor the first cell of events.
paul@343 1663
                            # NOTE: Need to only anchor the first period for a
paul@343 1664
                            # NOTE: recurring event.
paul@189 1665
paul@189 1666
                            if point == start:
paul@343 1667
                                page.td(class_=css, rowspan=span, id="%s-%s-%s" % (group_type, uid, recurrenceid or ""))
paul@189 1668
                            else:
paul@195 1669
                                page.td(class_=css, rowspan=span)
paul@171 1670
paul@185 1671
                            if not obj:
paul@291 1672
                                page.span("(Participant is busy)")
paul@185 1673
                            else:
paul@213 1674
                                summary = obj.get_value("SUMMARY")
paul@171 1675
paul@171 1676
                                # Only link to events if they are not being
paul@171 1677
                                # updated by requests.
paul@171 1678
paul@343 1679
                                if (uid, recurrenceid) in self._get_requests() and group_type != "request":
paul@189 1680
                                    page.span(summary)
paul@164 1681
                                else:
paul@345 1682
                                    page.a(summary, href=self.link_to(uid, recurrenceid))
paul@171 1683
paul@153 1684
                            page.td.close()
paul@153 1685
                    else:
paul@278 1686
                        empty += 1
paul@114 1687
paul@166 1688
                # Pad with empty columns.
paul@166 1689
paul@278 1690
                empty = columns - len(active)
paul@278 1691
paul@278 1692
                if empty:
paul@278 1693
                    page.td(class_="empty container", colspan=empty)
paul@201 1694
                    self._empty_slot(point, endpoint)
paul@196 1695
                    page.td.close()
paul@166 1696
paul@162 1697
            page.tr.close()
paul@114 1698
paul@239 1699
    def _day_heading(self, day):
paul@243 1700
paul@243 1701
        """
paul@243 1702
        Generate a heading for 'day' of the following form:
paul@243 1703
paul@243 1704
        <label class="day day-20150203" for="day-20150203">Tuesday, 3 February 2015</label>
paul@243 1705
        """
paul@243 1706
paul@239 1707
        page = self.page
paul@243 1708
        daystr = format_datetime(day)
paul@239 1709
        value, identifier = self._day_value_and_identifier(day)
paul@243 1710
        page.label(self.format_date(day, "full"), class_="day day-%s" % daystr, for_=identifier)
paul@239 1711
paul@201 1712
    def _time_point(self, point, endpoint):
paul@243 1713
paul@243 1714
        """
paul@243 1715
        Generate headings for the 'point' to 'endpoint' period of the following
paul@243 1716
        form:
paul@243 1717
paul@243 1718
        <label class="timepoint day-20150203" for="slot-20150203T090000-20150203T100000">09:00:00 CET</label>
paul@243 1719
        <span class="endpoint">10:00:00 CET</span>
paul@243 1720
        """
paul@243 1721
paul@201 1722
        page = self.page
paul@244 1723
        tzid = self.get_tzid()
paul@243 1724
        daystr = format_datetime(point.date())
paul@201 1725
        value, identifier = self._slot_value_and_identifier(point, endpoint)
paul@238 1726
        slots = self.env.get_args().get("slot", [])
paul@239 1727
        self._slot_selector(value, identifier, slots)
paul@243 1728
        page.label(self.format_time(point, "long"), class_="timepoint day-%s" % daystr, for_=identifier)
paul@244 1729
        page.span(self.format_time(endpoint or get_end_of_day(point, tzid), "long"), class_="endpoint")
paul@239 1730
paul@239 1731
    def _slot_selector(self, value, identifier, slots):
paul@258 1732
        reset = self.env.get_args().has_key("reset")
paul@239 1733
        page = self.page
paul@258 1734
        if not reset and value in slots:
paul@249 1735
            page.input(name="slot", type="checkbox", value=value, id=identifier, class_="newevent selector", checked="checked")
paul@202 1736
        else:
paul@249 1737
            page.input(name="slot", type="checkbox", value=value, id=identifier, class_="newevent selector")
paul@201 1738
paul@201 1739
    def _empty_slot(self, point, endpoint):
paul@197 1740
        page = self.page
paul@201 1741
        value, identifier = self._slot_value_and_identifier(point, endpoint)
paul@236 1742
        page.label("Select/deselect period", class_="newevent popup", for_=identifier)
paul@196 1743
paul@239 1744
    def _day_value_and_identifier(self, day):
paul@239 1745
        value = "%s-" % format_datetime(day)
paul@239 1746
        identifier = "day-%s" % value
paul@239 1747
        return value, identifier
paul@239 1748
paul@201 1749
    def _slot_value_and_identifier(self, point, endpoint):
paul@202 1750
        value = "%s-%s" % (format_datetime(point), endpoint and format_datetime(endpoint) or "")
paul@201 1751
        identifier = "slot-%s" % value
paul@201 1752
        return value, identifier
paul@196 1753
paul@315 1754
    def _show_menu(self, name, default, items, class_=""):
paul@257 1755
        page = self.page
paul@286 1756
        values = self.env.get_args().get(name, [default])
paul@324 1757
        page.select(name=name, class_=class_)
paul@257 1758
        for v, label in items:
paul@355 1759
            if v is None:
paul@355 1760
                continue
paul@257 1761
            if v in values:
paul@324 1762
                page.option(label, value=v, selected="selected")
paul@257 1763
            else:
paul@324 1764
                page.option(label, value=v)
paul@257 1765
        page.select.close()
paul@257 1766
paul@286 1767
    def _show_date_controls(self, name, default, attr, tzid):
paul@286 1768
paul@286 1769
        """
paul@286 1770
        Show date controls for a field with the given 'name' and 'default' value
paul@286 1771
        and 'attr', with the given 'tzid' being used if no other time regime
paul@286 1772
        information is provided.
paul@286 1773
        """
paul@286 1774
paul@286 1775
        page = self.page
paul@286 1776
        args = self.env.get_args()
paul@286 1777
paul@286 1778
        event_tzid = attr.get("TZID", tzid)
paul@286 1779
        dt = get_datetime(default, attr)
paul@286 1780
paul@286 1781
        # Show dates for up to one week around the current date.
paul@286 1782
paul@286 1783
        base = get_date(dt)
paul@286 1784
        items = []
paul@286 1785
        for i in range(-7, 8):
paul@286 1786
            d = base + timedelta(i)
paul@286 1787
            items.append((format_datetime(d), self.format_date(d, "full")))
paul@286 1788
paul@286 1789
        self._show_menu("%s-date" % name, format_datetime(base), items)
paul@286 1790
paul@286 1791
        # Show time details.
paul@286 1792
paul@300 1793
        dt_time = isinstance(dt, datetime) and dt or None
paul@300 1794
        hour = args.get("%s-hour" % name, "%02d" % (dt_time and dt_time.hour or 0))
paul@300 1795
        minute = args.get("%s-minute" % name, "%02d" % (dt_time and dt_time.minute or 0))
paul@300 1796
        second = args.get("%s-second" % name, "%02d" % (dt_time and dt_time.second or 0))
paul@300 1797
paul@300 1798
        page.span(class_="time enabled")
paul@300 1799
        page.input(name="%s-hour" % name, type="text", value=hour, maxlength=2, size=2)
paul@300 1800
        page.add(":")
paul@300 1801
        page.input(name="%s-minute" % name, type="text", value=minute, maxlength=2, size=2)
paul@300 1802
        page.add(":")
paul@300 1803
        page.input(name="%s-second" % name, type="text", value=second, maxlength=2, size=2)
paul@300 1804
        page.add(" ")
paul@300 1805
        self._show_menu("%s-tzid" % name, event_tzid,
paul@300 1806
            [(event_tzid, event_tzid)] + (
paul@300 1807
            event_tzid != tzid and [(tzid, tzid)] or []
paul@300 1808
            ))
paul@300 1809
        page.span.close()
paul@286 1810
paul@246 1811
    # Incoming HTTP request direction.
paul@246 1812
paul@69 1813
    def select_action(self):
paul@69 1814
paul@69 1815
        "Select the desired action and show the result."
paul@69 1816
paul@121 1817
        path_info = self.env.get_path_info().strip("/")
paul@121 1818
paul@69 1819
        if not path_info:
paul@114 1820
            self.show_calendar()
paul@121 1821
        elif self.show_object(path_info):
paul@70 1822
            pass
paul@70 1823
        else:
paul@70 1824
            self.no_page()
paul@69 1825
paul@82 1826
    def __call__(self):
paul@69 1827
paul@69 1828
        "Interpret a request and show an appropriate response."
paul@69 1829
paul@69 1830
        if not self.user:
paul@69 1831
            self.no_user()
paul@69 1832
        else:
paul@69 1833
            self.select_action()
paul@69 1834
paul@70 1835
        # Write the headers and actual content.
paul@70 1836
paul@69 1837
        print >>self.out, "Content-Type: text/html; charset=%s" % self.encoding
paul@69 1838
        print >>self.out
paul@69 1839
        self.out.write(unicode(self.page).encode(self.encoding))
paul@69 1840
paul@69 1841
if __name__ == "__main__":
paul@128 1842
    Manager()()
paul@69 1843
paul@69 1844
# vim: tabstop=4 expandtab shiftwidth=4