view sat/bridge/bridge_constructor/constructors/embedded/embedded_template.py @ 3732:0fac164ff2d8

tools (xml_tools): fix `widget_args` modification in `_dataFormField2XMLUIData`: in `textbox` widget, the first arg was modified with all values, lettings other ones unchanger, resulting in invalid number of arguments. This has been fixed by replacing all args with the new value.
author Goffi <goffi@goffi.org>
date Mon, 31 Jan 2022 18:35:52 +0100
parents 7550ae9cfbac
children 524856bd7b19
line wrap: on
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#!/usr/bin/env python3


# Libervia: an XMPP client
# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from sat.core.log import getLogger

log = getLogger(__name__)
from sat.core import exceptions


class _Bridge(object):
    def __init__(self):
        log.debug("Init embedded bridge...")
        self._methods_cbs = {}
        self._signals_cbs = {"core": {}, "plugin": {}}

    def bridgeConnect(self, callback, errback):
        callback()

    def register_method(self, name, callback):
        log.debug("registering embedded bridge method [{}]".format(name))
        if name in self._methods_cbs:
            raise exceptions.ConflictError("method {} is already regitered".format(name))
        self._methods_cbs[name] = callback

    def register_signal(self, functionName, handler, iface="core"):
        iface_dict = self._signals_cbs[iface]
        if functionName in iface_dict:
            raise exceptions.ConflictError(
                "signal {name} is already regitered for interface {iface}".format(
                    name=functionName, iface=iface
                )
            )
        iface_dict[functionName] = handler

    def call_method(self, name, out_sign, async_, args, kwargs):
        callback = kwargs.pop("callback", None)
        errback = kwargs.pop("errback", None)
        if async_:
            d = self._methods_cbs[name](*args, **kwargs)
            if callback is not None:
                d.addCallback(callback if out_sign else lambda __: callback())
            if errback is None:
                d.addErrback(lambda failure_: log.error(failure_))
            else:
                d.addErrback(errback)
            return d
        else:
            try:
                ret = self._methods_cbs[name](*args, **kwargs)
            except Exception as e:
                if errback is not None:
                    errback(e)
                else:
                    raise e
            else:
                if callback is None:
                    return ret
                else:
                    if out_sign:
                        callback(ret)
                    else:
                        callback()

    def send_signal(self, name, args, kwargs):
        try:
            cb = self._signals_cbs["plugin"][name]
        except KeyError:
            log.debug("ignoring signal {}: no callback registered".format(name))
        else:
            cb(*args, **kwargs)

    def addMethod(self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={}):
        # FIXME: doc parameter is kept only temporary, the time to remove it from calls
        log.debug("Adding method [{}] to embedded bridge".format(name))
        self.register_method(name, method)
        setattr(
            self.__class__,
            name,
            lambda self_, *args, **kwargs: self.call_method(
                name, out_sign, async_, args, kwargs
            ),
        )

    def addSignal(self, name, int_suffix, signature, doc={}):
        setattr(
            self.__class__,
            name,
            lambda self_, *args, **kwargs: self.send_signal(name, args, kwargs),
        )

    ## signals ##


##SIGNALS_PART##
## methods ##

##METHODS_PART##

# we want the same instance for both core and frontend
bridge = None


def Bridge():
    global bridge
    if bridge is None:
        bridge = _Bridge()
    return bridge