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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""This module provides a dialog widget to select a HDF5 dataset in a
tree.
.. autoclass:: DatasetDialog
:members: addFile, addGroup, getSelectedDataUrl, setMode
"""
from .GroupDialog import _Hdf5ItemSelectionDialog
import silx.io
from silx.io.url import DataUrl
__authors__ = ["P. Knobel"]
__license__ = "MIT"
__date__ = "05/09/2018"
class DatasetDialog(_Hdf5ItemSelectionDialog):
"""This :class:`QDialog` uses a :class:`silx.gui.hdf5.Hdf5TreeView` to
provide a HDF5 dataset selection dialog.
The information identifying the selected node is provided as a
:class:`silx.io.url.DataUrl`.
Example:
.. code-block:: python
dialog = DatasetDialog()
dialog.addFile(filepath1)
dialog.addFile(filepath2)
if dialog.exec_():
print("File path: %s" % dialog.getSelectedDataUrl().file_path())
print("HDF5 dataset path : %s " % dialog.getSelectedDataUrl().data_path())
else:
print("Operation cancelled :(")
"""
def __init__(self, parent=None):
_Hdf5ItemSelectionDialog.__init__(self, parent)
# customization for groups
self.setWindowTitle("HDF5 dataset selection")
self._header.setSections([self._model.NAME_COLUMN,
self._model.NODE_COLUMN,
self._model.LINK_COLUMN,
self._model.TYPE_COLUMN,
self._model.SHAPE_COLUMN])
self._selectDatasetStatusText = "Select a dataset or type a new dataset name"
def setMode(self, mode):
"""Set dialog mode DatasetDialog.SaveMode or DatasetDialog.LoadMode
:param mode: DatasetDialog.SaveMode or DatasetDialog.LoadMode
"""
_Hdf5ItemSelectionDialog.setMode(self, mode)
if mode == DatasetDialog.SaveMode:
self._selectDatasetStatusText = "Select a dataset or type a new dataset name"
elif mode == DatasetDialog.LoadMode:
self._selectDatasetStatusText = "Select a dataset"
def _onActivation(self, idx):
# double-click or enter press: filter for datasets
nodes = list(self._tree.selectedH5Nodes())
node = nodes[0]
if silx.io.is_dataset(node.h5py_object):
self.accept()
def _updateUrl(self):
# overloaded to filter for datasets
nodes = list(self._tree.selectedH5Nodes())
newDatasetName = self._lineEditNewItem.text()
isDatasetSelected = False
if nodes:
node = nodes[0]
if silx.io.is_dataset(node.h5py_object):
data_path = node.local_name
isDatasetSelected = True
elif silx.io.is_group(node.h5py_object):
data_path = node.local_name
if newDatasetName.lstrip("/"):
if not data_path.endswith("/"):
data_path += "/"
data_path += newDatasetName.lstrip("/")
isDatasetSelected = True
if isDatasetSelected:
self._selectedUrl = DataUrl(file_path=node.local_filename,
data_path=data_path)
self._okButton.setEnabled(True)
self._labelSelection.setText(
self._selectedUrl.path())
else:
self._selectedUrl = None
self._okButton.setEnabled(False)
self._labelSelection.setText(self._selectDatasetStatusText)
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