/usr/lib/python2.7/dist-packages/sardana/sardanabase.py is in python-sardana 1.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | #!/usr/bin/env python
##############################################################################
##
## This file is part of Sardana
##
## http://www.tango-controls.org/static/sardana/latest/doc/html/index.html
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Sardana is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Sardana 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Sardana. If not, see <http://www.gnu.org/licenses/>.
##
##############################################################################
"""This module is part of the Python Sardana library. It defines the base
classes for Sardana object"""
__all__ = ["SardanaBaseObject", "SardanaObjectID"]
__docformat__ = 'restructuredtext'
import weakref
from taurus.core.util import Logger
from sardanadefs import ElementType, Interface, InterfacesExpanded, InvalidId
from sardanaevent import EventGenerator, EventReceiver
class SardanaBaseObject(EventGenerator, EventReceiver, Logger):
"""The Sardana most abstract object. It contains only two members:
- _manager : a weak reference to the manager (pool or ms) where it
belongs
- _name : the name
- _full_name : the name (usually a tango device name, but can be
anything else.)"""
def __init__(self, **kwargs):
EventGenerator.__init__(self)
EventReceiver.__init__(self)
self._type = kwargs.pop('elem_type')
self._name = intern(kwargs.pop('name'))
self._full_name = intern(kwargs.pop('full_name'))
self._frontend = None
Logger.__init__(self, self._name)
self._manager = weakref.ref(kwargs.pop('manager'))
self._parent = weakref.ref(kwargs.pop('parent', self.manager))
def get_manager(self):
"""Return the :class:`sardana.Manager` which *owns* this sardana
object.
:return: the manager which *owns* this pool object.
:rtype: :class:`sardana.Manager`"""
return self._manager()
def get_name(self):
"""Returns this sardana object name
:return: this sardana object name
:rtype: str"""
return self._name
def get_full_name(self):
"""Returns this sardana object full name
:return: this sardana object full name
:rtype: str"""
return self._full_name
def get_type(self):
"""Returns this sardana object type.
:return: this sardana object type
:rtype: :obj:`~sardana.sardanadefs.ElementType`"""
return self._type
def get_parent(self):
"""Returns this pool object parent.
:return: this objects parent
:rtype: :class:`~sardana.sardanabase.SardanaBaseObject`"""
return self._parent()
def get_parent_name(self):
"""Returns this sardana object parent's name.
:return: this objects parent
:rtype: str"""
parent = self.get_parent()
if parent and hasattr(parent, 'name'):
return parent.name
def get_frontend(self):
"""Returns this sardana frontend object or None if no frontend is
registered
:return: this objects frontend
:rtype: :obj:`object`"""
f = self._frontend
if f is None:
return None
return f()
def fire_event(self, event_type, event_value, listeners=None, protected=True):
if protected:
try:
return EventGenerator.fire_event(self, event_type, event_value,
listeners=listeners)
except:
self.warning("Error firing event <%r, %r>", event_type, event_value)
self.debug("Details", exc_info=1)
else:
return EventGenerator.fire_event(self, event_type, event_value,
listeners=listeners)
def get_interfaces(self):
"""Returns the set of interfaces this object implements.
:return:
The set of interfaces this object implements.
:rtype:
class:`set` <:class:`sardana.sardanadefs.Interface`>"""
return InterfacesExpanded[self.get_interface()]
def get_interface(self):
"""Returns the interface this object implements.
:return:
The interface this object implements.
:rtype:
:class:`sardana.sardanadefs.Interface`"""
return Interface[ElementType[self.get_type()]]
def get_interface_names(self):
"""Returns a sequence of interface names this object implements.
:return:
The sequence of interfaces this object implements.
:rtype:
sequence<:obj:`str`>"""
return map(Interface.get, self.get_interfaces())
def serialize(self, *args, **kwargs):
kwargs['name'] = self.name
kwargs['full_name'] = self.full_name
kwargs['type'] = ElementType.whatis(self.get_type())
kwargs['manager'] = self.manager.name
kwargs['parent'] = self.get_parent_name()
kwargs['interfaces'] = self.get_interface_names()
return kwargs
def serialized(self, *args, **kwargs):
return self.manager.serialize_element(self, *args, **kwargs)
def str(self, *args, **kwargs):
return self.manager.str_element(self, *args, **kwargs)
def __str__(self):
return self._name
def __repr__(self):
return "%s(%s)" % (self.__class__.__name__, self._name)
manager = property(get_manager,
doc="reference to the :class:`sardana.Manager`")
name = property(get_name, doc="object name")
full_name = property(get_full_name, doc="object full name")
frontend = property(get_frontend, doc="the object frontend")
class SardanaObjectID(object):
"""To be used by sardana objects which have an ID associated to them."""
def __init__(self, id=InvalidId):
self._id = id
def get_id(self):
"""Returns this sardana object ID
:return: this sardana object ID
:rtype: int"""
return self._id
def serialize(self, *args, **kwargs):
kwargs['id'] = self.id
return kwargs
id = property(get_id, doc="object ID")
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