autopolicy.py :  » Installer » Zero-Install » zeroinstall-injector-0.47 » zeroinstall » injector » Python Open Source

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Python Open Source » Installer » Zero Install 
Zero Install » zeroinstall injector 0.47 » zeroinstall » injector » autopolicy.py
"""
A simple non-interactive policy.

This module provides a simple policy that will select, download and run a suitable set of
implementations. It is not interactive. This is the policy used when you run B{0launch -c}, and
is also the policy used to run the injector's GUI.

@deprecated: The interesting functionality has moved into the L{policy.Policy} base-class.
"""

# Copyright (C) 2009, Thomas Leonard
# See the README file for details, or visit http://0install.net.

from zeroinstall import _
from logging import info

from zeroinstall.injector import policy,run
from zeroinstall.injector.handler import Handler

class AutoPolicy(policy.Policy):
  __slots__ = ['download_only']

  def __init__(self, interface_uri, download_only = False, dry_run = False, src = False, handler = None):
    """@param handler: (new in 0.30) handler to use, or None to create a L{Handler}"""
    handler = handler or Handler()
    if dry_run:
      info(_("Note: dry_run is deprecated. Pass it to the handler instead!"))
      handler.dry_run = True
    policy.Policy.__init__(self, interface_uri, handler, src = src)
    self.download_only = download_only

  def execute(self, prog_args, main = None, wrapper = None):
    """@deprecated: use L{solve_and_download_impls} and L{run.execute}"""
    downloaded = self.download_uncached_implementations()
    if downloaded:
      self.handler.wait_for_blocker(downloaded)
    if not self.download_only:
      run.execute(self, prog_args, dry_run = self.handler.dry_run, main = main, wrapper = wrapper)
    else:
      info(_("Downloads done (download-only mode)"))

  def download_and_execute(self, prog_args, refresh = False, main = None):
    """@deprecated: use L{solve_and_download_impls} instead"""
    downloaded = self.solve_and_download_impls(refresh)
    if downloaded:
      self.handler.wait_for_blocker(downloaded)
    self.execute(prog_args, main = main)
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