def getWidgetFromParameter(self, param, row, col):
if isinstance(param, (ParameterRaster, ParameterVector, ParameterTable,
ParameterMultipleInput)):
item = BatchInputSelectionPanel(param, row, col, self)
elif isinstance(param, ParameterBoolean):
item = QtGui.QComboBox()
item.addItem('Yes')
item.addItem('No')
if param.default:
item.setCurrentIndex(0)
else:
item.setCurrentIndex(1)
elif isinstance(param, ParameterSelection):
item = QtGui.QComboBox()
item.addItems(param.options)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterExtent):
item = ExtentSelectionPanel(self, self.alg, param.default)
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterFile):
item = FileSelectionPanel(param.isFolder)
else:
item = QtGui.QLineEdit()
try:
item.setText(str(param.default))
except:
pass
return item
def getWidgetFromParameter(self, param, row, col):
if isinstance(param, (ParameterRaster, ParameterVector, ParameterTable,
ParameterMultipleInput)):
item = BatchInputSelectionPanel(param, row, col, self)
elif isinstance(param, ParameterBoolean):
item = QComboBox()
item.addItem(self.tr('Yes'))
item.addItem(self.tr('No'))
if param.default:
item.setCurrentIndex(0)
else:
item.setCurrentIndex(1)
elif isinstance(param, ParameterSelection):
item = QComboBox()
item.addItems(param.options)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterExtent):
item = ExtentSelectionPanel(self.parent, self.alg, param.default)
elif isinstance(param, ParameterPoint):
item = PointSelectionPanel(self.parent, param.default)
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterFile):
item = FileSelectionPanel(param.isFolder)
elif isinstance(param, ParameterGeometryPredicate):
item = GeometryPredicateSelectionPanel(param.enabledPredicates,
rows=1)
width = max(self.tblParameters.columnWidth(col),
item.sizeHint().width())
self.tblParameters.setColumnWidth(col, width)
else:
item = QLineEdit()
if param.default is not None:
try:
item.setText(unicode(param.default))
except:
pass
return item
def createWidget(self):
return FixedTablePanel(self.param)
def getWidgetFromParameter(self, param):
if isinstance(param, ParameterRaster):
item = QtGui.QComboBox()
layers = self.getAvailableValuesOfType(ParameterRaster, OutputRaster)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterVector):
item = QtGui.QComboBox()
layers = self.getAvailableValuesOfType(ParameterVector, OutputVector)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterTable):
item = QtGui.QComboBox()
item.setEditable(True)
layers = self.getAvailableValuesOfType(ParameterTable, OutputTable)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterBoolean):
item = QtGui.QComboBox()
item.addItem('Yes')
item.addItem('No')
bools = self.getAvailableValuesOfType(ParameterBoolean, None)
for b in bools:
item.addItem(self.resolveValueDescription(b), b)
elif isinstance(param, ParameterSelection):
item = QtGui.QComboBox()
item.addItems(param.options)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = self.getAvailableValuesOfType(ParameterVector, OutputVector)
else:
options = self.getAvailableValuesOfType(ParameterRaster, OutputRaster)
opts = []
for opt in options:
opts.append(self.resolveValueDescription(opt))
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterString):
strings = self.getAvailableValuesOfType(ParameterString, OutputString)
options = [(self.resolveValueDescription(s), s) for s in strings]
if param.multiline:
item = MultilineTextPanel(options)
item.setText(unicode(param.default))
else:
item = QtGui.QComboBox()
item.setEditable(True)
for desc, val in options:
item.addItem(desc, val)
item.setEditText(unicode(param.default))
elif isinstance(param, ParameterTableField):
item = QtGui.QComboBox()
item.setEditable(True)
fields = self.getAvailableValuesOfType(ParameterTableField, None)
for f in fields:
item.addItem(self.resolveValueDescription(f), f)
elif isinstance(param, ParameterNumber):
item = QtGui.QComboBox()
item.setEditable(True)
numbers = self.getAvailableValuesOfType(ParameterNumber, OutputNumber)
for n in numbers:
item.addItem(self.resolveValueDescription(n), n)
item.setEditText(str(param.default))
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterExtent):
item = QtGui.QComboBox()
item.setEditable(True)
extents = self.getAvailableValuesOfType(ParameterExtent, OutputExtent)
if self.canUseAutoExtent():
item.addItem(self.USE_MIN_COVERING_EXTENT, None)
for ex in extents:
item.addItem(self.resolveValueDescription(ex), ex)
if not self.canUseAutoExtent():
item.setEditText(str(param.default))
elif isinstance(param, ParameterFile):
item = QtGui.QComboBox()
item.setEditable(True)
files = self.getAvailableValuesOfType(ParameterFile, OutputFile)
for f in files:
item.addItem(self.resolveValueDescription(f), f)
else:
item = QtGui.QLineEdit()
try:
item.setText(str(param.default))
except:
pass
return item
def getWidgetFromParameter(self, param):
if isinstance(param, ParameterRaster):
item = QtGui.QComboBox()
layers = self.getRasterLayers()
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterVector):
item = QtGui.QComboBox()
layers = self.getVectorLayers()
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterTable):
item = QtGui.QComboBox()
item.setEditable(True)
layers = self.getTables()
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterBoolean):
item = QtGui.QComboBox()
item.addItem('Yes')
item.addItem('No')
bools = self.getBooleans()
for b in bools:
item.addItem(b.name(), b)
elif isinstance(param, ParameterSelection):
item = QtGui.QComboBox()
item.addItems(param.options)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = self.getVectorLayers()
else:
options = self.getRasterLayers()
opts = []
for opt in options:
opts.append(opt.name())
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterString):
strings = self.getStrings()
if param.multiline:
item = MultilineTextPanel(strings, self.model)
item.setText(str(param.default))
else:
item = QtGui.QComboBox()
item.setEditable(True)
for s in strings:
item.addItem(s.name(), s)
item.setEditText(str(param.default))
elif isinstance(param, ParameterTableField):
item = QtGui.QComboBox()
item.setEditable(True)
fields = self.getTableFields()
for f in fields:
item.addItem(f.name(), f)
elif isinstance(param, ParameterNumber):
item = QtGui.QComboBox()
item.setEditable(True)
numbers = self.getNumbers()
for n in numbers:
item.addItem(n.name(), n)
item.setEditText(str(param.default))
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterExtent):
item = QtGui.QComboBox()
item.setEditable(True)
extents = self.getExtents()
if self.canUseAutoExtent():
item.addItem(self.USE_MIN_COVERING_EXTENT, None)
for ex in extents:
item.addItem(ex.name(), ex)
if not self.canUseAutoExtent():
item.setEditText(str(param.default))
elif isinstance(param, ParameterFile):
item = QtGui.QComboBox()
item.setEditable(True)
files = self.getFiles()
for f in files:
item.addItem(f.name(), f)
else:
item = QtGui.QLineEdit()
try:
item.setText(str(param.default))
except:
pass
return item
def getWidgetFromParameter(self, param):
if isinstance(param, ParameterRaster):
item = QComboBox()
layers = self.getAvailableValuesOfType(ParameterRaster,
OutputRaster)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterVector):
item = QComboBox()
layers = self.getAvailableValuesOfType(ParameterVector,
OutputVector)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterTable):
item = QComboBox()
tables = self.getAvailableValuesOfType(ParameterTable, OutputTable)
layers = self.getAvailableValuesOfType(ParameterVector,
OutputVector)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for table in tables:
item.addItem(self.resolveValueDescription(table), table)
for layer in layers:
item.addItem(self.resolveValueDescription(layer), layer)
elif isinstance(param, ParameterBoolean):
item = QComboBox()
item.addItem('Yes')
item.addItem('No')
bools = self.getAvailableValuesOfType(ParameterBoolean, None)
for b in bools:
item.addItem(self.resolveValueDescription(b), b)
if param.default:
item.setCurrentIndex(0)
else:
item.setCurrentIndex(1)
elif isinstance(param, ParameterSelection):
item = QComboBox()
item.addItems(param.options)
item.setCurrentIndex(param.default or 1)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = self.getAvailableValuesOfType(
ParameterVector, OutputVector)
else:
options = self.getAvailableValuesOfType(
ParameterRaster, OutputRaster)
opts = []
for opt in options:
opts.append(self.resolveValueDescription(opt))
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterString):
strings = self.getAvailableValuesOfType(ParameterString,
OutputString)
options = [(self.resolveValueDescription(s), s) for s in strings]
if param.multiline:
item = MultilineTextPanel(options)
item.setText(unicode(param.default or ""))
else:
item = QComboBox()
item.setEditable(True)
for desc, val in options:
item.addItem(desc, val)
item.setEditText(unicode(param.default or ""))
elif isinstance(param, ParameterTableField):
item = QComboBox()
item.setEditable(True)
fields = self.getAvailableValuesOfType(ParameterTableField, None)
for f in fields:
item.addItem(self.resolveValueDescription(f), f)
elif isinstance(param, ParameterNumber):
item = QComboBox()
item.setEditable(True)
numbers = self.getAvailableValuesOfType(ParameterNumber,
OutputNumber)
for n in numbers:
item.addItem(self.resolveValueDescription(n), n)
item.setEditText(unicode(param.default))
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterExtent):
item = QComboBox()
item.setEditable(True)
extents = self.getAvailableValuesOfType(ParameterExtent,
OutputExtent)
if self.canUseAutoExtent():
item.addItem(self.USE_MIN_COVERING_EXTENT, None)
for ex in extents:
item.addItem(self.resolveValueDescription(ex), ex)
if not self.canUseAutoExtent():
item.setEditText(unicode(param.default))
elif isinstance(param, ParameterPoint):
item = QComboBox()
item.setEditable(True)
points = self.getAvailableValuesOfType(ParameterPoint)
for p in points:
item.addItem(self.resolveValueDescription(p), p)
item.setEditText(unicode(param.default))
elif isinstance(param, ParameterFile):
item = QComboBox()
item.setEditable(True)
files = self.getAvailableValuesOfType(ParameterFile, OutputFile)
for f in files:
item.addItem(self.resolveValueDescription(f), f)
elif isinstance(param, ParameterGeometryPredicate):
item = GeometryPredicateSelectionPanel(param.enabledPredicates)
else:
item = QLineEdit()
try:
item.setText(unicode(param.default))
except:
pass
return item
def getWidgetFromParameter(self, param):
# TODO Create Parameter widget class that holds the logic
# for creating a widget that belongs to the parameter.
if isinstance(param, ParameterRaster):
layers = dataobjects.getRasterLayers()
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((self.getExtendedLayerName(layer), layer))
item = InputLayerSelectorPanel(items, param)
elif isinstance(param, ParameterVector):
if self.somethingDependsOnThisParameter(
param) or self.alg.allowOnlyOpenedLayers:
item = QComboBox()
layers = dataobjects.getVectorLayers(param.shapetype)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.getExtendedLayerName(layer), layer)
item.currentIndexChanged.connect(self.updateDependentFields)
item.name = param.name
else:
layers = dataobjects.getVectorLayers(param.shapetype)
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((self.getExtendedLayerName(layer), layer))
# if already set, put first in list
for i, (name, layer) in enumerate(items):
if layer and layer.source() == param.value:
items.insert(0, items.pop(i))
item = InputLayerSelectorPanel(items, param)
elif isinstance(param, ParameterTable):
if self.somethingDependsOnThisParameter(param):
item = QComboBox()
layers = dataobjects.getTables()
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
item.currentIndexChanged.connect(self.updateDependentFields)
item.name = param.name
else:
layers = dataobjects.getTables()
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((layer.name(), layer))
# if already set, put first in list
for i, (name, layer) in enumerate(items):
if layer and layer.source() == param.value:
items.insert(0, items.pop(i))
item = InputLayerSelectorPanel(items, param)
elif isinstance(param, ParameterBoolean):
item = QCheckBox()
if param.default:
item.setChecked(True)
else:
item.setChecked(False)
elif isinstance(param, ParameterTableField):
item = QComboBox()
if param.parent in self.dependentItems:
items = self.dependentItems[param.parent]
else:
items = []
self.dependentItems[param.parent] = items
items.append(param.name)
parent = self.alg.getParameterFromName(param.parent)
if isinstance(parent, ParameterVector):
layers = dataobjects.getVectorLayers(parent.shapetype)
else:
layers = dataobjects.getTables()
if len(layers) > 0:
if param.optional:
item.addItem(self.tr("[not set]"))
item.addItems(self.getFields(layers[0], param.datatype))
elif isinstance(param, ParameterSelection):
item = QComboBox()
item.addItems(param.options)
item.setCurrentIndex(param.default)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterFile):
item = FileSelectionPanel(param.isFolder, param.ext)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_FILE:
item = MultipleFileInputPanel()
else:
if param.datatype == ParameterMultipleInput.TYPE_RASTER:
options = dataobjects.getRasterLayers(sorting=False)
elif param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = dataobjects.getVectorLayers(sorting=False)
else:
options = dataobjects.getVectorLayers([param.datatype],
sorting=False)
opts = []
for opt in options:
opts.append(self.getExtendedLayerName(opt))
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterNumber):
item = NumberInputPanel(param.default, param.min, param.max,
param.isInteger)
elif isinstance(param, ParameterExtent):
item = ExtentSelectionPanel(self.parent, self.alg, param.default)
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterString):
if param.multiline:
verticalLayout = QVBoxLayout()
verticalLayout.setSizeConstraint(QLayout.SetDefaultConstraint)
textEdit = QPlainTextEdit()
textEdit.setPlainText(param.default)
verticalLayout.addWidget(textEdit)
item = textEdit
else:
item = QLineEdit()
item.setText(str(param.default))
else:
item = QLineEdit()
item.setText(str(param.default))
return item
def getWidgetFromParameter(self, param):
if isinstance(param, ParameterRaster):
item = QtGui.QComboBox()
#item.setEditable(True)
layers = self.getRasterLayers()
if (param.optional):
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterVector):
item = QtGui.QComboBox()
#item.setEditable(True)
layers = self.getVectorLayers()
if (param.optional):
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterTable):
item = QtGui.QComboBox()
item.setEditable(True)
layers = self.getTables()
if (param.optional):
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
elif isinstance(param, ParameterBoolean):
item = QtGui.QComboBox()
item.addItem("Yes")
item.addItem("No")
bools = self.getBooleans()
for b in bools:
item.addItem(b.name(), b)
elif isinstance(param, ParameterSelection):
item = QtGui.QComboBox()
item.addItems(param.options)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = self.getVectorLayers()
else:
options = self.getRasterLayers()
opts = []
for opt in options:
opts.append(opt.name())
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterString):
strings = self.getStrings()
if param.multiline:
item = MultilineTextPanel(strings,self.model)
item.setText(str(param.default))
else:
item = QtGui.QComboBox()
item.setEditable(True)
for s in strings:
item.addItem(s.name(), s)
item.setEditText(str(param.default))
elif isinstance(param, ParameterTableField):
item = QtGui.QComboBox()
item.setEditable(True)
fields = self.getTableFields()
for f in fields:
item.addItem(f.name(), f)
elif isinstance(param, ParameterNumber):
item = QtGui.QComboBox()
item.setEditable(True)
numbers = self.getNumbers()
for n in numbers:
item.addItem(n.name(), n)
item.setEditText(str(param.default))
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterExtent):
item = QtGui.QComboBox()
item.setEditable(True)
extents = self.getExtents()
if self.canUseAutoExtent():
item.addItem(self.USE_MIN_COVERING_EXTENT, None)
for ex in extents:
item.addItem(ex.name(), ex)
if not self.canUseAutoExtent():
item.setEditText(str(param.default))
elif isinstance(param, ParameterFile):
item = QtGui.QComboBox()
item.setEditable(True)
files = self.getFiles()
for f in files:
item.addItem(f.name(), f)
else:
item = QtGui.QLineEdit()
try:
item.setText(str(param.default))
except:
pass
return item
def getWidgetFromParameter(self, param):
if isinstance(param, ParameterRaster):
layers = dataobjects.getRasterLayers()
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((self.getExtendedLayerName(layer), layer))
item = InputLayerSelectorPanel(items)
elif isinstance(param, ParameterVector):
if self.somethingDependsOnThisParameter(param) \
or self.alg.allowOnlyOpenedLayers:
item = QtGui.QComboBox()
layers = dataobjects.getVectorLayers(param.shapetype)
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(self.getExtendedLayerName(layer), layer)
item.currentIndexChanged.connect(self.updateDependentFields)
item.name = param.name
else:
layers = dataobjects.getVectorLayers(param.shapetype)
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((self.getExtendedLayerName(layer), layer))
item = InputLayerSelectorPanel(items)
elif isinstance(param, ParameterTable):
if self.somethingDependsOnThisParameter(param):
item = QtGui.QComboBox()
layers = dataobjects.getTables()
if param.optional:
item.addItem(self.NOT_SELECTED, None)
for layer in layers:
item.addItem(layer.name(), layer)
item.currentIndexChanged.connect(self.updateDependentFields)
item.name = param.name
else:
layers = dataobjects.getTables()
items = []
if param.optional:
items.append((self.NOT_SELECTED, None))
for layer in layers:
items.append((layer.name(), layer))
item = InputLayerSelectorPanel(items)
elif isinstance(param, ParameterBoolean):
item = QtGui.QComboBox()
item.addItem('Yes')
item.addItem('No')
if param.default:
item.setCurrentIndex(0)
else:
item.setCurrentIndex(1)
elif isinstance(param, ParameterTableField):
item = QtGui.QComboBox()
if param.parent in self.dependentItems:
items = self.dependentItems[param.parent]
else:
items = []
self.dependentItems[param.parent] = items
items.append(param.name)
parent = self.alg.getParameterFromName(param.parent)
if isinstance(parent, ParameterVector):
layers = dataobjects.getVectorLayers(parent.shapetype)
else:
layers = dataobjects.getTables()
if len(layers) > 0:
item.addItems(self.getFields(layers[0], param.datatype))
elif isinstance(param, ParameterSelection):
item = QtGui.QComboBox()
item.addItems(param.options)
item.setCurrentIndex(param.default)
elif isinstance(param, ParameterFixedTable):
item = FixedTablePanel(param)
elif isinstance(param, ParameterRange):
item = RangePanel(param)
elif isinstance(param, ParameterFile):
item = FileSelectionPanel(param.isFolder)
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_RASTER:
options = dataobjects.getRasterLayers()
elif param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = dataobjects.getVectorLayers()
else:
options = dataobjects.getVectorLayers([param.datatype])
opts = []
for opt in options:
opts.append(self.getExtendedLayerName(opt))
item = MultipleInputPanel(opts)
elif isinstance(param, ParameterNumber):
item = NumberInputPanel(param.default, param.min, param.max,
param.isInteger)
elif isinstance(param, ParameterExtent):
item = ExtentSelectionPanel(self.parent, self.alg, param.default)
elif isinstance(param, ParameterCrs):
item = CrsSelectionPanel(param.default)
elif isinstance(param, ParameterString):
if param.multiline:
verticalLayout = QtGui.QVBoxLayout()
verticalLayout.setSizeConstraint(
QtGui.QLayout.SetDefaultConstraint)
textEdit = QtGui.QPlainTextEdit()
textEdit.setPlainText(param.default)
verticalLayout.addWidget(textEdit)
item = textEdit
else:
item = QtGui.QLineEdit()
item.setText(str(param.default))
else:
item = QtGui.QLineEdit()
item.setText(str(param.default))
return item