#!/usr/bin/env python
# ###########################################################################
#
# This file is part of Taurus
#
# http://taurus-scada.org
#
# Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
#
# Taurus 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.
#
# Taurus 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 Taurus. If not, see <http://www.gnu.org/licenses/>.
#
# ###########################################################################
from taurus.external.qt import Qt
from taurus.core.units import Quantity
import numpy
import taurus.core
from taurus.core.taurusbasetypes import (
DataFormat,
DataType,
TaurusEventType,
TaurusElementType,
)
from taurus.qt.qtgui.util import PintValidator
from taurus.qt.qtgui.display import TaurusLabel
from taurus.qt.qtgui.container import TaurusWidget
__docformat__ = "restructuredtext"
def _value2Quantity(value, units):
"""
Creates a Quantity from value and forces units if the vaule is unitless
:param value: a number or a string from which a quantity can be created
:type value: int, float or str
:param units: Units to use if the value is unitless
:type units: str or Pint units
:return:
:rtype: Quantity
"""
q = Quantity(value)
if q.unitless:
q = Quantity(q, units)
return q
class TaurusValuesIOTableModel(Qt.QAbstractTableModel):
typeCastingMap = {
"f": float,
"b": bool,
"u": int,
"i": int,
"S": str,
"U": str,
}
# Need to have an array
def __init__(self, size, parent=None):
Qt.QAbstractTableModel.__init__(self, parent)
self._parent = parent
self._rtabledata = []
self._wtabledata = []
self._rowCount = size[0]
self._columnCount = size[1]
self._modifiedDict = {}
self._attr = None
self.editedIndex = None
self._editable = False
self._writeMode = False
def isDirty(self):
"""returns True if there are user changes. False Otherwise"""
return bool(self._modifiedDict)
# To be implemented -----
def rowCount(self, index=Qt.QModelIndex()):
"""see :meth:`Qt.QAbstractTableModel.rowCount`"""
if self._rowCount == 0:
self._rowCount = 1
return self._rowCount
def columnCount(self, index=Qt.QModelIndex()):
"""see :meth:`Qt.QAbstractTableModel.columnCount`"""
if self._columnCount == 0:
self._columnCount = 1
return self._columnCount
def data(self, index, role=Qt.Qt.DisplayRole):
"""see :meth:`Qt.QAbstractTableModel.data`"""
if self._writeMode is False:
tabledata = self._rtabledata
else:
tabledata = self._wtabledata
if not index.isValid() or not (0 <= index.row() < len(tabledata)):
return None
elif role == Qt.Qt.DisplayRole:
value = None
rc = (index.row(), index.column())
if self._writeMode and rc in self._modifiedDict:
if self.getAttr().type in [DataType.Integer, DataType.Float]:
return str(self._modifiedDict[rc])
else:
return self._modifiedDict[rc]
else:
value = tabledata[rc]
if isinstance(value, Quantity):
value = value.magnitude
# cast the value to a standard python type
value = self.typeCastingMap[tabledata.dtype.kind](value)
return value
elif role == Qt.Qt.DecorationRole:
if (
index.row(),
index.column(),
) in self._modifiedDict and self._writeMode:
if self.getAttr().type in [DataType.Integer, DataType.Float]:
value = self._modifiedDict[(index.row(), index.column())]
if not self.inAlarmRange(value):
icon = Qt.QIcon.fromTheme("document-save")
else:
icon = Qt.QIcon.fromTheme("emblem-important")
else:
icon = Qt.QIcon.fromTheme("document-save")
return icon
elif role == Qt.Qt.EditRole:
value = None
if (
index.row(),
index.column(),
) in self._modifiedDict and self._writeMode:
value = self._modifiedDict[(index.row(), index.column())]
else:
value = tabledata[index.row(), index.column()]
if tabledata.dtype == bool:
value = bool(value)
return value
elif role == Qt.Qt.BackgroundRole:
if self._writeMode:
return Qt.QColor(22, 223, 21, 50)
else:
return Qt.QColor("white")
elif role == Qt.Qt.ForegroundRole:
if (
index.row(),
index.column(),
) in self._modifiedDict and self._writeMode:
if self.getAttr().type in [DataType.Integer, DataType.Float]:
value = self._modifiedDict[(index.row(), index.column())]
if not self.inAlarmRange(value):
return Qt.QColor("blue")
else:
return Qt.QColor("orange")
else:
return Qt.QColor("blue")
return Qt.QColor("black")
elif role == Qt.Qt.FontRole:
if (
index.row(),
index.column(),
) in self._modifiedDict and self._writeMode:
return Qt.QFont("Arial", 10, Qt.QFont.Bold)
elif role == Qt.Qt.ToolTipRole:
if (
index.row(),
index.column(),
) in self._modifiedDict and self._writeMode:
value = str(self._modifiedDict[(index.row(), index.column())])
msg = (
"Original value: %s.\nNew value that will be saved: %s"
% (str(tabledata[index.row(), index.column()]), value)
)
return msg
return None
def getAttr(self):
return self._attr
def setAttr(self, attr):
"""
Updated the internal table data from an attribute value
:param attr:
:type attr: DeviceAttribute
"""
self._attr = attr
rvalue = attr.rvalue
if attr.type not in [DataType.Float, DataType.Integer]:
rvalue = numpy.array(attr.rvalue)
# reshape the table
if attr.data_format == DataFormat._1D:
rows, columns = len(rvalue), 1
elif attr.data_format == DataFormat._2D:
rows, columns = numpy.shape(rvalue)
else:
raise TypeError(
'Unsupported data format "%s"' % repr(attr.data_format)
)
if (self._rowCount != rows) or (self._columnCount != columns):
self.beginResetModel()
self.endResetModel()
self._rowCount = rows
self._columnCount = columns
rvalue = rvalue.reshape(rows, columns)
if attr.type in [DataType.Integer, DataType.Float]:
units = self._parent.getCurrentUnits()
rvalue = rvalue.to(units)
self._rtabledata = rvalue
self._editable = False
self.dataChanged.emit(
self.createIndex(0, 0), self.createIndex(rows - 1, columns - 1)
)
def getStatus(self, index):
"""
Returns Status of the variable
:return:
:rtype: taurus.core.taurusbasetypes.AttrQuality
"""
return self._attr.quality
def getType(self):
"""
Returns the table data type.
:return:
:rtype: numpy.dtype
"""
return self._rtabledata.dtype
def addValue(self, index, value):
"""adds a value to the dictionary of modified cell values
:param index: table index
:type index: QModelIndex
:param value:
:type value: object
"""
rtable_value = self._rtabledata[index.row()][index.column()]
if self._attr.getType() in [DataType.Float, DataType.Integer]:
units = self._parent.getCurrentUnits()
value = _value2Quantity(value, units)
equals = numpy.allclose(rtable_value, value.to(units))
else:
equals = bool(rtable_value == value)
if not equals:
self._modifiedDict[(index.row(), index.column())] = value
else:
self.removeValue(index)
def removeValue(self, index):
"""
Removes index from dictionary
:param index: table index
:type index: QModelIndex
"""
if (index.row(), index.column()) in self._modifiedDict:
self._modifiedDict.pop((index.row(), index.column()))
def flags(self, index):
"""see :meth:`Qt.QAbstractTableModel`"""
if not index.isValid():
return Qt.Qt.ItemIsEnabled
if self._editable:
return Qt.Qt.ItemFlags(
Qt.Qt.ItemIsEnabled
| Qt.Qt.ItemIsEditable
| Qt.Qt.ItemIsSelectable
)
else:
return Qt.Qt.ItemFlags(
Qt.Qt.ItemIsEnabled | Qt.Qt.ItemIsSelectable
)
def getModifiedWriteData(self):
"""returns an array for the write data that includes the user
modifications
:return: The write values including user modifications.
:rtype: numpy.array
"""
table = self._wtabledata
kind = table.dtype.kind
if kind in "SU":
# we want to allow the strings to be larger than the original ones
table = table.tolist()
for (r, c), v in self._modifiedDict.items():
table[r][c] = v
table = numpy.array(table, dtype=str)
else:
for k, v in self._modifiedDict.items():
if kind in ["f", "i", "u"]:
units = self._parent.getCurrentUnits()
q = _value2Quantity(v, units)
table[k] = q
elif kind == "b":
if str(v) == "true":
table[k] = True
else:
table[k] = False
else:
raise TypeError('Unknown data type "%s"' % kind)
# reshape if needed
if self._attr.data_format == DataFormat._1D:
table = table.flatten()
return table
def clearChanges(self):
"""clears the dictionary of changed values"""
self._modifiedDict.clear()
self.dataChanged.emit(
self.createIndex(0, 0),
self.createIndex(self.rowCount() - 1, self.columnCount() - 1),
)
def inAlarmRange(self, value):
"""
Checkes if value is in alarm range.
:param value: Quantity value
:return: True if value in alarm range, False if valid
:rtype: bool
"""
try:
min_alarm, max_alarm = self._attr.alarms
if min_alarm >= value or value >= max_alarm:
return True
else:
return False
except Exception:
return True
def inRange(self, value):
"""
Checks if value is in range.
:param value: Quantity value
:return: True if value in range, False if valid
:rtype: bool
"""
try:
min_range, max_range = self._attr.range
if min_range <= value <= max_range:
return True
else:
return False
except Exception:
return True
def setWriteMode(self, isWrite):
"""Changes the write state
:param isWrite:
:type isWrite: bool
"""
self._writeMode = isWrite
if isWrite and not self.isDirty() and self._attr is not None:
# refresh the write data (unless it is dirty)
wvalue = self._attr.wvalue
# reshape the table
if self._attr.type == DataType.String:
wvalue = numpy.array(wvalue)
elif self._attr.type in [DataType.Integer, DataType.Float]:
units = self._parent.getCurrentUnits()
wvalue = wvalue.to(units)
if self._attr.data_format == DataFormat._1D:
rows, columns = numpy.shape(wvalue)[0], 1
if rows == 0:
# TODO: Ask to the user for a default shape
rows = 3
elif self._attr.data_format == DataFormat._2D:
try:
rows, columns = numpy.shape(wvalue)
except ValueError:
# TODO: Ask to the user for a default shape
rows = 3
columns = 3
wvalue = numpy.array((rows, columns))
else:
self.warning(
"unsupported data format %s" % str(wvalue.data_format)
)
wvalue = wvalue.reshape(rows, columns)
# In version 4.6 of Qt when whole table is updated it is
# recommended to use beginReset()
self._wtabledata = wvalue
self.dataChanged.emit(
self.createIndex(0, 0),
self.createIndex(self.rowCount() - 1, self.columnCount() - 1),
)
def getModifiedDict(self):
"""
Returns dictionary.
:return: dictionary containing modified indexes and values
:rtype: dictionary
"""
return self._modifiedDict
def getReadValue(self, index):
"""
Returns read value for a given index.
:param index: table model index
:type index: QModelIndex
:return: read table value for a given cell
:rtype: string/int/float/bool
"""
return self._rtabledata[index.row(), index.column()]
class TaurusValuesIOTable(Qt.QTableView):
def __init__(self, parent=None):
self._parent = parent
Qt.QTableView.__init__(self, parent)
self._showQuality = True
self._attr = None
self._value = None
self.setSelectionMode(Qt.QAbstractItemView.SingleSelection)
itemDelegate = TaurusValuesIOTableDelegate(self)
self.setItemDelegate(itemDelegate)
# -~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
# TaurusBaseWidget overwriting
# -~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
def setModel(self, shape):
"""
Creates an instance of QTableModel and sets a QT model.
:param shape: shape of the model table to be set
:type shape: tuple<int>
"""
qmodel = TaurusValuesIOTableModel(shape, parent=self)
Qt.QTableView.setModel(self, qmodel)
def cancelChanges(self):
"""
Cancels all table modifications.
"""
self.model().clearChanges()
def removeChange(self):
"""
If the cell was modified it restores the original write value.
"""
self.model().removeValue(self.selectedIndexes()[0])
def showHelp(self):
"""
Shows QMessageBox help window. It contains explanations of used icons.
"""
buttonBox = Qt.QMessageBox(self)
buttonBox.setLayout(Qt.QGridLayout(self))
icon = Qt.QIcon.fromTheme("document-save").pixmap(48, 48)
lbl = Qt.QLabel()
lbl.setPixmap(icon)
buttonBox.layout().addWidget(lbl, 0, 0)
lb = "- value is valid. It will be saved if changes are accepted"
buttonBox.layout().addWidget(Qt.QLabel(lb), 0, 1)
icon = Qt.QIcon.fromTheme("ddialog-warning").pixmap(48, 48)
lbl = Qt.QLabel()
lbl.setPixmap(icon)
buttonBox.layout().addWidget(lbl, 1, 0)
lb = "- value in alarm range. It will be saved if changes are accepted"
buttonBox.layout().addWidget(Qt.QLabel(lb), 1, 1)
buttonBox.exec_()
def getCurrentUnits(self):
try:
return str(self._parent._units.currentText())
except Exception:
return ""
class TaurusValuesIOTableDelegate(Qt.QStyledItemDelegate):
editorCreated = Qt.pyqtSignal()
def __init__(self, parent=None):
Qt.QStyledItemDelegate.__init__(self, parent)
self._parent = parent
self._initialText = ""
def createEditor(self, parent, option, index):
"""
Creates a custom editor for a table delagate.
see :meth:`Qt.QStyledItemDelegate.createEditor`
"""
if index.model().getType() == bool:
editor = Qt.QComboBox(parent)
else:
editor = TableInlineEdit(parent)
editor._updateValidator(index.model().getAttr())
self.editorCreated.emit()
return editor
def setEditorData(self, editor, index):
"""
see :meth:`Qt.QStyledItemDelegate.setEditorData`
"""
if index.model().editedIndex == (index.row(), index.column()):
return
index.model().editedIndex = (index.row(), index.column())
self._initialText = None
if index.model().getType() == bool:
editor.addItems(["true", "false"])
a = str(index.data()).lower()
self._initialText = a
editor.setCurrentIndex(editor.findText(a))
else:
data = index.model().data(index, Qt.Qt.EditRole)
self._initialText = data
editor.setText(str(self._initialText))
def setModelData(self, editor, model, index):
"""
see :meth:`Qt.QStyledItemDelegate.setModelData`
"""
# if editor text changed, then don't mark as updated.
isNumeric = False
if self._parent._attr.type in [DataType.Integer, DataType.Float]:
units = self._parent.getCurrentUnits()
q = _value2Quantity(editor.text(), units)
isNumeric = True
if not model.inRange(q):
return
if index.model().getType() == bool:
text = editor.currentText()
else:
if isNumeric:
text = q
else:
text = editor.text()
text = str(text)
if (text != self._initialText) & (text != ""):
model.addValue(index, text)
hh = self.parent().horizontalHeader()
if hh.length() > 0:
hh.setSectionResizeMode(hh.Fixed)
vh = self.parent().verticalHeader()
if vh.length() > 0:
vh.setSectionResizeMode(vh.Fixed)
index.model().editedIndex = None
class TableInlineEdit(Qt.QLineEdit):
"""TableInLineEdit is used to validate the content of the new value, also
to paint the text: blue - valid, orange - in alarm, grey - invalid.
"""
def __init__(self, parent=None):
super(TableInlineEdit, self).__init__(parent)
self.textEdited.connect(self.onTextEdited)
self.setValidator(None)
self._min_range = None
self._max_range = None
self._min_alarm = None
self._max_alarm = None
self._default_unit = None
def onTextEdited(self):
"""
Paints the text while typing.
Slot for the `Qt.QLineEdit.textEdited` signal
"""
# default case: the value is in normal range with no pending changes
color, weight = "gray", "normal"
try:
value = self.displayText()
q = _value2Quantity(value, self._default_unit)
except Exception:
q = 0.0
try:
if self._min_alarm < q < self._max_alarm:
color = "blue"
elif self._min_range <= q <= self._max_range:
# the value is valid but in alarm range...
color = "orange"
else:
# the value is invalid and can't be applied
color = "gray"
except Exception:
color = "gray"
weight = "bold"
self.setStyleSheet(
"TableInlineEdit {color: %s; font-weight: %s}" % (color, weight)
)
def _updateValidator(self, attr):
"""This method sets a validator depending on the data type
:param attr: TaurusAttribute
"""
data_type = attr.getType()
if data_type in [DataType.Integer, DataType.Float]:
self._min_range, self._max_range = attr.range
self._min_alarm, self._max_alarm = attr.alarms
self._default_unit = attr.wvalue.units
validator = PintValidator()
validator.setBottom(self._min_range)
validator.setTop(self._max_range)
validator.setUnits(self._default_unit)
self.setValidator(validator)
else:
self.setValidator(None)
def __decimalDigits(self, fmt):
"""returns the number of decimal digits from a format string
(or None if they are not defined)
"""
try:
if fmt[-1].lower() in ["f", "g"] and "." in fmt:
return int(fmt[:-1].split(".")[-1])
else:
return None
except Exception:
return None
[docs]class TaurusValuesTable(TaurusWidget):
"""
A table for displaying and/or editing 1D/2D Taurus attributes
"""
_showQuality = False
_writeMode = False
def __init__(self, parent=None, designMode=False, defaultWriteMode=None):
TaurusWidget.__init__(self, parent=parent, designMode=designMode)
self._tableView = TaurusValuesIOTable(self)
lyt = Qt.QGridLayout()
lyt.addWidget(self._tableView, 1, 0)
self._tableView.itemDelegate().editorCreated.connect(
self._onEditorCreated
)
if defaultWriteMode is None:
self.defaultWriteMode = "rw"
else:
self.defaultWriteMode = defaultWriteMode
self._label = TaurusLabel()
self._label.setBgRole("quality")
self._label.setFgRole("quality")
self._units = Qt.QComboBox()
self._applyBT = Qt.QPushButton("Apply")
self._cancelBT = Qt.QPushButton("Cancel")
self._applyBT.clicked.connect(self.okClicked)
self._cancelBT.clicked.connect(self.cancelClicked)
self._rwModeCB = Qt.QCheckBox()
self._rwModeCB.setText("Write mode")
self._rwModeCB.toggled.connect(self.setWriteMode)
lv = Qt.QHBoxLayout()
lv.addWidget(self._label)
lv.addWidget(self._units)
lyt.addLayout(lv, 2, 0)
lyt.addWidget(self._rwModeCB, 0, 0)
lv = Qt.QHBoxLayout()
lv.addWidget(self._applyBT)
lv.addWidget(self._cancelBT)
lyt.addLayout(lv, 3, 0)
self._writeMode = False
self.setLayout(lyt)
self._initActions()
def _initActions(self):
"""Initializes the actions for this widget (currently, the pause
action.)"""
self._pauseAction = Qt.QAction("&Pause", self)
self._pauseAction.setShortcuts(
[Qt.QKeySequence(Qt.Qt.Key_P), Qt.QKeySequence(Qt.Qt.Key_Pause)]
)
self._pauseAction.setCheckable(True)
self._pauseAction.setChecked(False)
self.addAction(self._pauseAction)
self._pauseAction.toggled.connect(self.setPaused)
self.chooseModelAction = Qt.QAction("Choose &Model", self)
self.chooseModelAction.setEnabled(self.isModifiableByUser())
self.addAction(self.chooseModelAction)
self.chooseModelAction.triggered.connect(self.chooseModel)
[docs] def getModelClass(self, **kwargs):
"""see :meth:`TaurusWidget.getModelClass`"""
return taurus.core.taurusattribute.TaurusAttribute
[docs] def setModel(self, model, **kwargs):
"""Reimplemented from :meth:`TaurusWidget.setModel`"""
TaurusWidget.setModel(self, model)
model_obj = self.getModelObj()
if model_obj.isWritable() and self.defaultWriteMode != "r":
self._writeMode = True
else:
self.defaultWriteMode = "r"
if model_obj is not None:
self._tableView._attr = model_obj
if model_obj.type in [DataType.Integer, DataType.Float]:
if self._writeMode:
try:
default_unit = str(model_obj.wvalue.units)
except AttributeError:
default_unit = ""
else:
default_unit = str(model_obj.rvalue.units)
# TODO: fill the combobox with the compatible units
self._units.addItem("%s" % default_unit)
self._units.setCurrentIndex(self._units.findText(default_unit))
self._units.setEnabled(False)
else:
self._units.setVisible(False)
raiseException = False
if model_obj.data_format == DataFormat._2D:
try:
dim_x, dim_y = numpy.shape(model_obj.rvalue)
except ValueError:
raiseException = True
elif model_obj.data_format == DataFormat._1D:
try:
dim_x, dim_y = len(model_obj.rvalue), 1
except ValueError:
raiseException = True
else:
raiseException = True
if raiseException:
raise Exception("rvalue is invalid")
self._tableView.setModel([dim_x, dim_y])
# fire a fake event for initialization
self.fireEvent(
self,
taurus.core.taurusbasetypes.TaurusEventType.Change,
model_obj.rvalue,
)
self.setWriteMode(self._writeMode)
self._label.setModel(model)
[docs] def handleEvent(self, evt_src, evt_type, evt_value):
"""see :meth:`TaurusWidget.handleEvent`"""
# fixme: in some situations, we may miss some config event because
# of the qmodel not being set. The whole handleEvent Method
# and setModel method should be re-thought
model = self._tableView.model()
if model is None:
return
if (
evt_type in (TaurusEventType.Change, TaurusEventType.Periodic)
and evt_value is not None
):
attr = self.getModelObj()
model.setAttr(attr)
model.setWriteMode(self._writeMode)
hh = self._tableView.horizontalHeader()
if hh.length() > 0:
hh.setSectionResizeMode(hh.Fixed)
vh = self._tableView.verticalHeader()
if vh.length() > 0:
vh.setSectionResizeMode(vh.Fixed)
if self.defaultWriteMode == "r":
isWritable = False
else:
isWritable = True
writable = isWritable and self._writeMode and attr.isWritable()
self.setWriteMode(writable)
elif evt_type == TaurusEventType.Config:
# force a read to set an attr
attr = self.getModelObj()
model.setAttr(attr)
[docs] def applyChanges(self):
"""
Writes table modifications to the device server.
"""
tab = self._tableView.model().getModifiedWriteData()
attr = self.getModelObj()
if attr.type == DataType.String:
# String arrays has to be converted to a list
tab = tab.tolist()
attr.write(tab)
self._tableView.model().clearChanges()
[docs] def okClicked(self):
"""This is a SLOT that is being triggered when ACCEPT button is
clicked.
.. note::
This SLOT is called, when user wants to apply table modifications.
When no cell was modified it will not be called. When
modifications have been done, they will be writen to w_value
of an attribute.
"""
if self._tableView.model().isDirty():
self.applyChanges()
self.resetWriteMode()
[docs] def cancelClicked(self):
"""This is a SLOT that is being triggered when CANCEL button is
clicked.
.. note:: This SLOT is called, when user does not want to apply table
modifications. When no cell was modified it will not be
called.
"""
if self._tableView.model().isDirty():
self.askCancel()
[docs] def askCancel(self):
"""
Shows a QMessageBox, asking if user wants to cancel all changes.
Triggered when user clicks Cancel button.
"""
result = Qt.QMessageBox.warning(
self,
"Your changes will be lost!",
"Do you want to cancel changes done to the whole table?",
Qt.QMessageBox.Ok | Qt.QMessageBox.Cancel,
)
if result == Qt.QMessageBox.Ok:
self._tableView.cancelChanges()
self.resetWriteMode()
def _onEditorCreated(self):
"""slot called when an editor has been created"""
self.setWriteMode(self._writeMode)
[docs] def getWriteMode(self):
"""whether the widget is showing the read or write values
:return:
:rtype: bool
"""
return self._writeMode
[docs] def setWriteMode(self, isWrite):
"""
Triggered when the read mode is changed to write mode.
:param isWrite:
:type isWrite: bool
"""
self._applyBT.setVisible(isWrite)
self._cancelBT.setVisible(isWrite)
self._rwModeCB.setChecked(isWrite)
if self.defaultWriteMode in ("rw", "wr"):
self._rwModeCB.setVisible(True)
else:
self._rwModeCB.setVisible(False)
table_view_model = self._tableView.model()
if table_view_model is not None:
table_view_model.setWriteMode(isWrite)
table_view_model._editable = isWrite
if isWrite == self._writeMode:
return
self._writeMode = isWrite
valueObj = self.getModelValueObj()
if isWrite and valueObj is not None:
w_value = valueObj.wvalue
value = valueObj.rvalue
if numpy.array(w_value).shape != numpy.array(value).shape:
ta = self.getModelObj()
v = ta.read()
# fixme: this is ugly! we should not be writing into the
# attribute without asking first...
ta.write(v.rvalue)
[docs] def resetWriteMode(self):
"""equivalent to self.setWriteMode(self.defaultWriteMode)"""
if self.defaultWriteMode == "r":
isWritable = False
else:
isWritable = True
self.setWriteMode(isWritable)
[docs] @classmethod
def getQtDesignerPluginInfo(cls):
"""Reimplemented from :meth:`TaurusWidget.getQtDesignerPluginInfo`"""
ret = TaurusWidget.getQtDesignerPluginInfo()
ret["module"] = "taurus.qt.qtgui.table"
ret["group"] = "Taurus Views"
ret["icon"] = "designer:table.png"
return ret
[docs] def chooseModel(self):
"""shows a model chooser"""
from taurus.qt.qtgui.panel import TaurusModelChooser
selectables = [TaurusElementType.Attribute]
models, ok = TaurusModelChooser.modelChooserDlg(
selectables=selectables, singleModel=True
)
if ok and len(models) == 1:
self.setModel(models[0])
[docs] def setModifiableByUser(self, modifiable):
"""Reimplemented from :meth:`TaurusWidget.setModifiableByUser`"""
self.chooseModelAction.setEnabled(modifiable)
TaurusWidget.setModifiableByUser(self, modifiable)
[docs] def isReadOnly(self):
"""Reimplemented from :meth:`TaurusWidget.isReadOnly`"""
return False
# -~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
# QT property definition
# -~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
model = Qt.pyqtProperty(
"QString", TaurusWidget.getModel, setModel, TaurusWidget.resetModel
)
writeMode = Qt.pyqtProperty(
"bool", getWriteMode, setWriteMode, resetWriteMode
)
def taurusTableMain():
"""A launcher for TaurusValuesTable."""
from taurus.qt.qtgui.application import TaurusApplication
from taurus.core.util import argparse
import sys
parser = argparse.get_taurus_parser()
parser.set_usage("%prog [options] [model]]")
parser.set_description(
"A table for viewing and editing 1D and 2D attribute values"
)
app = TaurusApplication(
cmd_line_parser=parser,
app_name="TaurusValuesTable",
app_version=taurus.Release.version,
)
args = app.get_command_line_args()
dialog = TaurusValuesTable()
dialog.setModifiableByUser(True)
dialog.setWindowTitle(app.applicationName())
# set a model list from the command line or launch the chooser
if len(args) == 1:
model = args[0]
dialog.setModel(model)
else:
dialog.chooseModel()
# model = 'sys/tg_test/1/boolean_spectrum'
# model = 'sys/tg_test/1/boolean_image'
# model = 'sys/tg_test/1/string_spectrum'
# model = 'sys/tg_test/1/float_image'
# model = 'sys/tg_test/1/double_image'
# model = 'sys/tg_test/1/double_image_ro'
# model = 'sys/tg_test/1/wave'
# dialog.setModel(model)
dialog.show()
sys.exit(app.exec_())
if __name__ == "__main__":
taurusTableMain()