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75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
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#!/usr/bin/env python2
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#
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# larcon_base.py -- Basic backend framework for larcon applications
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#
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# (c) Copyright 2010 Michael Towers (larch42 at googlemail dot com)
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#-------------------------------------------------------------------
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# 2010.08.14
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import os, threading
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from liblarch_conf import liblarchdir
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from rootrun import init_rootrun
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from translation import i18n_liblarch, _
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class Backend:
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def __init__(self, appname, env, basedir=None):
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"""The env(ironment), i.e. the global dictionary, is needed for
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fetching uim files.
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If the basedir is not provided it can be derived from the appname.
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"""
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if basedir:
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self.basedir = basedir
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else:
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self.basedir = os.path.dirname(liblarchdir) + '/' + appname
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self.appenv = env
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def fss_fetch_layout(self, uim):
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fp = os.path.join(self.basedir, 'uim', uim)
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fh = open(fp)
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r = fh.read()
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fh.close()
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return eval(r, self.appenv)
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def fss_uim_fetch(self, uim):
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fp = os.path.join(liblarchdir, 'uim', uim)
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fh = open(fp)
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r = fh.read()
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fh.close()
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return eval(r)
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def setuisig(self, fn):
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self.ui_signal = fn
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def rootcall(self, cmd, fn_done):
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self.rcall = init_rootrun(self._pwget)
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self.rcall.run(cmd, fn_done)
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def _pwget(self, cb, prompt):
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self.pw_event = threading.Event()
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self.ui_signal('get_password', prompt)
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self.pw_event.wait()
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self.rcall.cb_done(cb, *self.pw_returned)
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def fss_sendpassword(self, ok, pw):
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# The result needs to be passed to the waiting _pwget method
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# (which is running in a different thread).
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self.pw_returned = (ok, pw)
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self.pw_event.set()
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return None
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