File: hook.py

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bzr-dbus 0.1~bzr35-4
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# bzr-dbus: dbus support for bzr/bzrlib.
# Copyright (C) 2007 Canonical Limited.
#   Author: Robert Collins.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
# 

"""System wide hooks to trigger dbus events from bzr activity."""


from bzrlib.branch import Branch
from bzrlib.smart.server import SmartTCPServer

import activity


def install_hooks():
    """Install the dbus hooks into bzrlib."""
    if 'post_change_branch_tip' in Branch.hooks:
        Branch.hooks.install_named_hook('post_change_branch_tip',
                                  on_post_change_branch_tip, None)
    else:
        Branch.hooks.install_named_hook('set_rh', on_set_rh, None)
    try:
        SmartTCPServer.hooks
    except AttributeError:
        return
    SmartTCPServer.hooks.install_named_hook('server_started', on_server_start, None)
    SmartTCPServer.hooks.install_named_hook('server_stopped', on_server_stop, None)


def on_set_rh(branch, rev_history):
    """Announce the new revision_history of branch to dbus."""
    activity.Activity().advertise_branch(branch)


def on_post_change_branch_tip(params):
    """Announce the new head revision of the branch to dbus."""
    activity.Activity().advertise_branch(params.branch)


def on_server_start(local_urls, public_url):
    """Add the servers local and public urls to the session Broadcaster."""
    for local_url in local_urls:
        activity.Activity().add_url_map(local_url, public_url)


def on_server_stop(local_urls, public_url):
    """The server has shutdown, so remove the servers local and public urls."""
    for local_url in local_urls:
        activity.Activity().remove_url_map(local_url, public_url)