def test_GIVEN_stream_group_that_has_ev42_advanced_option_WHEN_filling_in_existing_field_widget_THEN_ev42_group_box_is_shown(
file, qtbot):
group = file.create_group("stream2")
group.attrs["NX_class"] = "NCstream"
vlen_str = h5py.special_dtype(vlen=str)
group.create_dataset("writer_module", dtype=vlen_str, data="ev42")
group.create_dataset("topic", dtype=vlen_str, data="topic1")
group.create_dataset("source", dtype=vlen_str, data="source1")
group.create_dataset(ADC_PULSE_DEBUG, dtype=bool, data=True)
wrapper = NexusWrapper()
wrapper.load_file(file, file)
instrument = Instrument(wrapper, {})
widget = FieldWidget(instrument=instrument)
qtbot.addWidget(widget)
update_existing_stream_field(group, widget)
# this would usually be done outside of the update_existing_stream_field
widget.name = get_name_of_node(group)
assert widget.streams_widget.ev42_advanced_group_box.isEnabled()
generated_group = widget.streams_widget.get_stream_group()
assert generated_group["writer_module"][()] == group["writer_module"][()]
assert generated_group["topic"][()] == group["topic"][()]
assert generated_group["source"][()] == group["source"][()]
assert generated_group[ADC_PULSE_DEBUG][()] == group[ADC_PULSE_DEBUG][()]
def test_GIVEN_stream_group_that_has_f142_advanced_option_WHEN_filling_in_existing_field_widget_THEN_f142_group_box_is_shown(
file, qtbot, nexus_wrapper):
group = file.create_group("stream1")
group.attrs["NX_class"] = "NCstream"
vlen_str = h5py.special_dtype(vlen=str)
group.create_dataset("writer_module", dtype=vlen_str, data="f142")
group.create_dataset("type", dtype=vlen_str, data="byte")
group.create_dataset("topic", dtype=vlen_str, data="topic1")
group.create_dataset("source", dtype=vlen_str, data="source1")
group.create_dataset(NEXUS_INDICES_INDEX_EVERY_MB, dtype=int, data=1)
wrapper = nexus_wrapper
wrapper.load_file(file, file)
instrument = Instrument(wrapper, {})
widget = FieldWidget(instrument=instrument)
qtbot.addWidget(widget)
update_existing_stream_field(group, widget)
# this would usually be done outside of the update_existing_stream_field
widget.name = get_name_of_node(group)
assert widget.streams_widget.f142_advanced_group_box.isEnabled()
generated_group = widget.streams_widget.get_stream_group()
assert generated_group["writer_module"][()] == group["writer_module"][()]
assert generated_group["topic"][()] == group["topic"][()]
assert generated_group["type"][()] == group["type"][()]
assert generated_group["source"][()] == group["source"][()]
assert (generated_group[NEXUS_INDICES_INDEX_EVERY_MB][(
)] == group[NEXUS_INDICES_INDEX_EVERY_MB][()])
def _get_transform(
self,
depends_on: str,
transforms: List[Transformation],
local_only: bool = False,
):
"""
Recursive function, appends each transform in depends_on chain to transforms list
:param depends_on: The next depends_on string to find the next transformation in the chain
:param transforms: The list to populate with transformations
:param local_only: If True then only add transformations which are stored within this component
"""
if depends_on is not None and depends_on != ".":
if (
transforms
and depends_on
== self.file.get_attribute_value(
transforms[-1].dataset, CommonAttrs.DEPENDS_ON
)
and depends_on
in [get_name_of_node(x) for x in transforms[-1].dataset.parent.values()]
):
# depends_on is recursive, ie one transformation in this group depends on another transformation in the group, and it is also relative
transform_dataset = self.file.nexus_file[
f"{transforms[-1].dataset.parent.name}/{depends_on}"
]
elif f"{self.group.name}/{depends_on}" in self.file.nexus_file:
transform_dataset = self.file.nexus_file[
f"{self.group.name}/{depends_on}"
]
else:
transform_dataset = self.file.nexus_file[depends_on]
if (
local_only
and transform_dataset.parent.parent.name != self.absolute_path
):
# We're done, the next transformation is not stored in this component
return
new_transform = create_transformation(self.file, transform_dataset)
new_transform.parent = transforms
transforms.append(new_transform)
if (
self.file.get_attribute_value(transform_dataset, CommonAttrs.DEPENDS_ON)
is not None
):
self._get_transform(
self.file.get_attribute_value(
transform_dataset, CommonAttrs.DEPENDS_ON
),
transforms,
local_only,
)
def _handle_link(entry: NexusObject, root: h5py.Group, root_dict: Dict):
"""
Create link specific fields in the JSON when a softlink is found.
:param entry: The entry (dataset or group) that is to be linked
:param root: the group containing the link object
:param root_dict: the output dictionary for the JSON writer
"""
root_dict["children"].append(
{
"type": "link",
"name": get_name_of_node(entry),
"target": root.get(name=entry.name, getlink=True).path,
}
)
def find_field_type(item: h5Node) -> Callable:
if (
isinstance(item, h5py.Dataset)
and get_name_of_node(item) not in INVALID_FIELD_NAMES
):
if np.isscalar(item[()]):
return update_existing_scalar_field
else:
return update_existing_array_field
elif isinstance(item, h5py.Group):
if isinstance(item.parent.get(item.name, getlink=True), h5py.SoftLink):
return update_existing_link_field
elif get_nx_class(item) == CommonAttrs.NC_STREAM:
return update_existing_stream_field
logging.debug(
f"Object {get_name_of_node(item)} not handled as field - could be used for other parts of UI instead"
)
def _handle_dataset(root: Union[h5py.Dataset, h5py.SoftLink]):
"""
Generate JSON dict for a h5py dataset.
:param root: h5py dataset to generate dict from.
:return: generated dictionary of dataset values and attrs.
"""
data, dataset_type, size = get_data_and_type(root)
root_dict = {
"type": "dataset",
"name": get_name_of_node(root),
"dataset": {"type": dataset_type},
"values": data,
}
if size != 1:
root_dict["dataset"]["size"] = size
return root_dict
def _handle_group(self, root: h5py.Group):
"""
Generate JSON dict for a h5py group.
:param root: h5py group to generate dict from.
:return: generated dict of group and children.
"""
root_dict = {"type": "group", "name": get_name_of_node(root), "children": []}
# Add the entries
if get_nx_class(root) == CommonAttrs.NC_STREAM:
self._handle_stream(root, root_dict)
return root_dict
for entry in root.values():
# Check if there are SoftLinks in the group
if isinstance(root.get(name=entry.name, getlink=True), h5py.SoftLink):
self._handle_link(entry, root, root_dict)
root_dict["children"].append(self._root_to_dict(entry))
return root_dict
def find_field_type(item):
if (
isinstance(item, h5py.Dataset)
and get_name_of_node(item) not in INVALID_FIELD_NAMES
):
if np.isscalar(item[()]):
return item, update_existing_scalar_field
else:
return item, update_existing_array_field
elif isinstance(item, h5py.Group):
if isinstance(item.parent.get(item.name, getlink=True), h5py.SoftLink):
return item, update_existing_link_field
elif (
CommonAttrs.NX_CLASS in item.attrs.keys()
and item.attrs[CommonAttrs.NX_CLASS] == CommonAttrs.NC_STREAM
):
return item, update_existing_stream_field
logging.debug(
f"Object {get_name_of_node(item)} not handled as field - could be used for other parts of UI instead"
)
return item, None
def edit_existing_component(
self,
component_name: str,
description: str,
nx_class: str,
pixel_data: PixelData,
):
"""
Edits an existing component.
:param component_name: The component name.
:param description: The component description.
:param nx_class: The component class.
:param pixel_data: The component PixelData. Can be None.
:return: The geometry object.
"""
# remove the previous object from the qt3d view
if not isinstance(self.component_to_edit.shape[0], NoShapeGeometry):
self.parent().sceneWidget.delete_component(self.component_to_edit.name)
# remove previous fields
for field_group in self.component_to_edit.group.values():
if get_name_of_node(field_group) not in INVALID_FIELD_NAMES:
del self.instrument.nexus.nexus_file[field_group.name]
self.component_to_edit.name = component_name
self.component_to_edit.nx_class = nx_class
self.component_to_edit.description = description
self.write_pixel_data_to_component(self.component_to_edit, nx_class, pixel_data)
add_fields_to_component(self.component_to_edit, self.fieldsListWidget)
self.generate_geometry_model(self.component_to_edit, pixel_data)
component_with_geometry = create_component(
self.instrument.nexus, self.component_to_edit.group
)
return component_with_geometry.shape
def name(self):
return nx.get_name_of_node(self.group)
def create_new_ui_field(self, field):
new_ui_field = self.add_field()
new_ui_field.name = get_name_of_node(field)
return new_ui_field
def name(self):
return nx.get_name_of_node(self.dataset)
