def setupUi(self):
self.showAdvanced = False
self.wrappers = {}
self.algorithmItem = None
self.mainLayout = QVBoxLayout()
self.mainLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout = QVBoxLayout()
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setContentsMargins(0, 0, 0, 0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
widget_context = QgsProcessingParameterWidgetContext()
widget_context.setProject(QgsProject.instance())
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setActiveLayer(iface.activeLayer())
widget_context.setModel(self.model)
widget_context.setModelChildAlgorithmId(self.childId)
self.algorithmItem = QgsGui.instance().processingGuiRegistry().algorithmConfigurationWidget(self._alg)
if self.algorithmItem:
self.algorithmItem.setWidgetContext(widget_context)
self.algorithmItem.registerProcessingContextGenerator(self.context_generator)
if self.configuration:
self.algorithmItem.setConfiguration(self.configuration)
self.verticalLayout.addWidget(self.algorithmItem)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
wrapper = WidgetWrapperFactory.create_wrapper(param, self.dialog)
self.wrappers[param.name()] = wrapper
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(self.context_generator)
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
widget = wrapper
else:
widget = wrapper.widget
if widget is not None:
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
label = wrapper.createLabel()
else:
tooltip = param.description()
widget.setToolTip(tooltip)
label = wrapper.label
self.widget_labels[param.name()] = label
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for output in self._alg.destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
widget = QgsGui.processingGuiRegistry().createModelerParameterWidget(self.model,
self.childId,
output,
self.context)
widget.setDialog(self.dialog)
widget.setWidgetContext(widget_context)
widget.registerProcessingContextGenerator(self.context_generator)
self.wrappers[output.name()] = widget
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(self.tr('[Enter name if this is a final result]'))
label = widget.createLabel()
if label is not None:
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.scrollArea.setFrameStyle(QFrame.NoFrame)
self.verticalLayout2.addWidget(self.scrollArea)
w = QWidget()
w.setLayout(self.verticalLayout2)
self.mainLayout.addWidget(w)
self.setLayout(self.mainLayout)
def initWidgets(self):
super().initWidgets()
widget_context = QgsProcessingParameterWidgetContext()
widget_context.setProject(QgsProject.instance())
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setBrowserModel(iface.browserModel())
widget_context.setActiveLayer(iface.activeLayer())
widget_context.setMessageBar(self.parent().messageBar())
if isinstance(self.algorithm(), QgsProcessingModelAlgorithm):
widget_context.setModel(self.algorithm())
in_place_input_parameter_name = 'INPUT'
if hasattr(self.algorithm(), 'inputParameterName'):
in_place_input_parameter_name = self.algorithm(
).inputParameterName()
# Create widgets and put them in layouts
for param in self.algorithm().parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if param.isDestination():
continue
else:
if self.in_place and param.name() in (
in_place_input_parameter_name, 'OUTPUT'):
# don't show the input/output parameter widgets in in-place mode
# we still need to CREATE them, because other wrappers may need to interact
# with them (e.g. those parameters which need the input layer for field
# selections/crs properties/etc)
self.wrappers[
param.name()] = QgsProcessingHiddenWidgetWrapper(
param, QgsProcessingGui.Standard, self)
self.wrappers[param.name()].setLinkedVectorLayer(
self.active_layer)
continue
wrapper = WidgetWrapperFactory.create_wrapper(
param, self.parent())
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(
self.context_generator)
wrapper.registerProcessingParametersGenerator(self)
self.wrappers[param.name()] = wrapper
# For compatibility with 3.x API, we need to check whether the wrapper is
# the deprecated WidgetWrapper class. If not, it's the newer
# QgsAbstractProcessingParameterWidgetWrapper class
# TODO QGIS 4.0 - remove
is_python_wrapper = issubclass(wrapper.__class__,
WidgetWrapper)
stretch = 0
if not is_python_wrapper:
widget = wrapper.createWrappedWidget(
self.processing_context)
stretch = wrapper.stretch()
else:
widget = wrapper.widget
if widget is not None:
if is_python_wrapper:
widget.setToolTip(param.toolTip())
label = None
if not is_python_wrapper:
label = wrapper.createWrappedLabel()
else:
label = wrapper.label
if label is not None:
self.addParameterLabel(param, label)
elif is_python_wrapper:
desc = param.description()
if isinstance(param, QgsProcessingParameterExtent):
desc += self.tr(' (xmin, xmax, ymin, ymax)')
if param.flags(
) & QgsProcessingParameterDefinition.FlagOptional:
desc += self.tr(' [optional]')
widget.setText(desc)
self.addParameterWidget(param, widget, stretch)
for output in self.algorithm().destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if self.in_place and output.name() in (
in_place_input_parameter_name, 'OUTPUT'):
continue
wrapper = QgsGui.processingGuiRegistry(
).createParameterWidgetWrapper(output, QgsProcessingGui.Standard)
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(self.context_generator)
wrapper.registerProcessingParametersGenerator(self)
self.wrappers[output.name()] = wrapper
label = wrapper.createWrappedLabel()
if label is not None:
self.addOutputLabel(label)
widget = wrapper.createWrappedWidget(self.processing_context)
self.addOutputWidget(widget, wrapper.stretch())
# def skipOutputChanged(widget, checkbox, skipped):
# TODO
# enabled = not skipped
#
# # Do not try to open formats that are write-only.
# value = widget.value()
# if value and isinstance(value, QgsProcessingOutputLayerDefinition) and isinstance(output, (
# QgsProcessingParameterFeatureSink, QgsProcessingParameterVectorDestination)):
# filename = value.sink.staticValue()
# if filename not in ('memory:', ''):
# path, ext = os.path.splitext(filename)
# format = QgsVectorFileWriter.driverForExtension(ext)
# drv = gdal.GetDriverByName(format)
# if drv:
# if drv.GetMetadataItem(gdal.DCAP_OPEN) is None:
# enabled = False
#
# checkbox.setEnabled(enabled)
# checkbox.setChecked(enabled)
for wrapper in list(self.wrappers.values()):
wrapper.postInitialize(list(self.wrappers.values()))
