def makeNodeDataItem (node,viewer=None,viewopts={}):
"""creates a GridDataItem for a node""";
udi = meqds.node_udi(node);
nodeclass = meqds.NodeClass(node);
vo = viewopts.copy();
vo.update(defaultNodeViewopts);
(name,caption) = meqds.make_udi_node_caption(node,None);
# curry is used to create a call for refreshing its state
return Grid.DataItem(udi,name=name,caption=caption,desc=name,
datatype=nodeclass,
refresh=curry(meqds.request_node_state,node.nodeindex),
viewer=viewer,viewopts=vo);
def makeNodeDataItem (node,viewer=None,viewopts={}):
"""creates a GridDataItem for a node""";
udi = meqds.node_udi(node);
nodeclass = meqds.NodeClass(node);
vo = viewopts.copy();
vo.update(defaultNodeViewopts);
(name,caption) = meqds.make_udi_node_caption(node,None);
# curry is used to create a call for refreshing its state
return Grid.DataItem(udi,name=name,caption=caption,desc=name,
datatype=nodeclass,
refresh=curry(meqds.request_node_state,node.nodeindex),
viewer=viewer,viewopts=vo);
def makeDataItem(udi, data=None, viewer=None, publish=False, viewopts={}):
"""Creates a data item given a UDI"""
# parse udi
(cat, name, trailer) = meqds.parse_udi(udi)
if cat == 'node':
if not name:
raise ValueError, "invalid UDI: " + udi
# check name or node index
nn = name.split('#', 1)
if not nn[0]:
name = int(nn[1])
# use node index if no name given
node = meqds.nodelist[name]
# enable publishing but do not ask for a state update -- this will
# be done by the item later
if publish:
meqds.enable_node_publish(node, True, get_state=False)
if not trailer:
return makeNodeDataItem(node, viewer, viewopts)
else:
(name, caption) = meqds.make_udi_node_caption(node, trailer)
desc = "node %s#%d, state field %s" % (node.name, node.nodeindex,
trailer)
return Grid.DataItem(udi,
name=name,
caption=caption,
desc=desc,
data=data,
refresh=curry(meqds.request_node_state,
node.nodeindex),
viewer=viewer,
viewopts=viewopts)
elif cat == 'forest':
if not trailer:
return makeForestDataItem(data, viewer, viewopts)
else:
(name,
caption) = meqds.make_parsed_udi_caption(cat, name, trailer)
return Grid.DataItem(udi,
name=name,
caption=caption,
desc="Forest state field " + trailer,
data=data,
refresh=meqds.request_forest_state,
viewer=viewer,
viewopts=viewopts)
else:
raise ValueError, "can't display " + udi
def makeDataItem (udi,data=None,viewer=None,publish=False,viewopts={}):
"""Creates a data item given a UDI""";
# parse udi
(cat,name,trailer) = meqds.parse_udi(udi);
if cat == 'node':
if not name:
raise ValueError,"invalid UDI: "+udi;
# check name or node index
nn = name.split('#',1);
if not nn[0]:
name = int(nn[1]); # use node index if no name given
node = meqds.nodelist[name];
# enable publishing but do not ask for a state update -- this will
# be done by the item later
if publish:
meqds.enable_node_publish(node,True,get_state=False);
if not trailer:
return makeNodeDataItem(node,viewer,viewopts);
else:
(name,caption) = meqds.make_udi_node_caption(node,trailer);
desc = "node %s#%d, state field %s" % (node.name,node.nodeindex,trailer);
return Grid.DataItem(udi,
name=name,caption=caption,desc=desc,
data=data,
refresh=curry(meqds.request_node_state,node.nodeindex),
viewer=viewer,viewopts=viewopts);
elif cat == 'forest':
if not trailer:
return makeForestDataItem(data,viewer,viewopts);
else:
(name,caption) = meqds.make_parsed_udi_caption(cat,name,trailer);
return Grid.DataItem(udi,
name=name,caption=caption,desc="Forest state field "+trailer,
data=data,
refresh=meqds.request_forest_state,
viewer=viewer,viewopts=viewopts);
else:
raise ValueError,"can't display "+udi;