def _set_widgets(self):
"""
Parse operation (function arguments) and create widgets according to
the function annotations. Fill with default or current argument values
and display the widgets.
"""
self._clear_widgets()
# Retreive operation (function detail), instantiate neccesary widgets
package, fun = self._op["module"].rsplit('.', 1)
module = import_module(package)
self._op["function"] = getattr(module, fun)
argspec = inspect.getfullargspec(self._op["function"])
# Create widgets
self._labels = []
self._widgets = []
self._none_checkbox_widgets = []
for par_name, annotation in sorted(argspec.annotations.items()):
label = QLabel(par_name)
font = qtgui.QFont()
font.setPointSize(10)
label.setFont(font)
# find associated widget and functions
mapping = {}
if "widget" in annotation:
mapping["widget"] = widget = getattr(qtgui, annotation["widget"])
mapping["display_func"] = annotation["display_func"]
mapping["display_conversion"] = annotation["display_conversion"]
mapping["get_func"] = annotation["get_func"]
elif "type" in annotation:
try:
mapping = dict(GenericOperationWidget.type_mapping[annotation["type"]])
except KeyError:
print("Can't find wiget for type: {type} for parameter " +
"{par_name}".format(type=annotation["type"], par_name=par_name))
continue
else:
continue
# instanciate widget and make display_function callable
widget = mapping["widget"]()
if not callable(mapping["display_func"]):
mapping["display_func"] = widget.__getattribute__(mapping["display_func"])
# save mapping and parameter name for later use
widget.mapping = mapping
widget.par_name = par_name
# create checkbox to allow not to set this parameter
checkbox = QCheckBox()
checkbox.setChecked(True)
checkbox.setToolTip("Set the \"%s\" parameter. If unchecked, the default value is used." % par_name)
checkbox.par_name = widget.par_name
# Set value of widget according to parameters of the operation
try:
if "display_conversion" in mapping:
display_value = mapping["display_conversion"](self._op["kwargs"][par_name])
else:
display_value = self._op["kwargs"][par_name]
mapping["display_func"](display_value)
except KeyError:
checkbox.setChecked(False)
self._labels.append(label)
self._widgets.append(widget)
self._none_checkbox_widgets.append(checkbox)
# Add widgets to layout
if not self._widgets:
self.widget_layout.addWidget(QLabel("No operation parameters"))
for i, widget in enumerate(self._widgets):
self.widget_layout.addWidget(self._labels[i])
self.widget_layout.addWidget(self._widgets[i])
self.widget_layout.addWidget(self._none_checkbox_widgets[i])
