# -*- coding: utf-8 -*-
"""
***************************************************************************
ModelerParameterDefinitionDialog.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import math
from qgis.PyQt.QtCore import (Qt,
QByteArray,
QCoreApplication)
from qgis.PyQt.QtWidgets import (QDialog,
QVBoxLayout,
QLabel,
QLineEdit,
QComboBox,
QCheckBox,
QDialogButtonBox,
QMessageBox)
from qgis.gui import QgsExpressionLineEdit, QgsProjectionSelectionWidget
from qgis.core import (QgsApplication,
QgsSettings,
QgsProcessing,
QgsCoordinateReferenceSystem,
QgsProcessingParameterDefinition,
QgsProcessingParameterBoolean,
QgsProcessingParameterCrs,
QgsProcessingParameterMapLayer,
QgsProcessingParameterExtent,
QgsProcessingParameterPoint,
QgsProcessingParameterFile,
QgsProcessingParameterMatrix,
QgsProcessingParameterMultipleLayers,
QgsProcessingParameterNumber,
QgsProcessingParameterDistance,
QgsProcessingParameterRange,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterEnum,
QgsProcessingParameterString,
QgsProcessingParameterExpression,
QgsProcessingParameterVectorLayer,
QgsProcessingParameterField,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterBand,
QgsProcessingDestinationParameter,
QgsProcessingParameterFeatureSink,
QgsProcessingParameterFileDestination,
QgsProcessingParameterFolderDestination,
QgsProcessingParameterRasterDestination,
QgsProcessingParameterVectorDestination)
from processing.gui.DestinationSelectionPanel import DestinationSelectionPanel
from processing.gui.enummodelerwidget import EnumModelerWidget
from processing.gui.matrixmodelerwidget import MatrixModelerWidget
from processing.core import parameters
from processing.modeler.exceptions import UndefinedParameterException
class ModelerParameterDefinitionDialog(QDialog):
def __init__(self, alg, paramType=None, param=None):
self.alg = alg
self.paramType = paramType
self.param = param
QDialog.__init__(self)
self.setModal(True)
self.setupUi()
settings = QgsSettings()
self.restoreGeometry(settings.value("/Processing/modelParametersDefinitionDialogGeometry", QByteArray()))
def closeEvent(self, event):
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDefinitionDialogGeometry", self.saveGeometry())
super(ModelerParameterDefinitionDialog, self).closeEvent(event)
def setupUi(self):
self.setWindowTitle(self.tr('Parameter Definition'))
self.setMinimumWidth(300)
self.verticalLayout = QVBoxLayout(self)
self.verticalLayout.setMargin(20)
self.label = QLabel(self.tr('Parameter name'))
self.verticalLayout.addWidget(self.label)
self.nameTextBox = QLineEdit()
self.verticalLayout.addWidget(self.nameTextBox)
if isinstance(self.param, QgsProcessingParameterDefinition):
self.nameTextBox.setText(self.param.description())
if self.paramType == parameters.PARAMETER_BOOLEAN or \
isinstance(self.param, QgsProcessingParameterBoolean):
self.state = QCheckBox()
self.state.setText(self.tr('Checked'))
self.state.setChecked(False)
if self.param is not None:
self.state.setChecked(bool(self.param.defaultValue()))
self.verticalLayout.addWidget(self.state)
elif self.paramType == parameters.PARAMETER_TABLE_FIELD or \
isinstance(self.param, QgsProcessingParameterField):
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
idx = 0
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
# add the datatype selector
self.verticalLayout.addWidget(QLabel(self.tr('Allowed data type')))
self.datatypeCombo = QComboBox()
self.datatypeCombo.addItem(self.tr('Any'), -1)
self.datatypeCombo.addItem(self.tr('Number'), 0)
self.datatypeCombo.addItem(self.tr('String'), 1)
self.datatypeCombo.addItem(self.tr('Date/time'), 2)
self.verticalLayout.addWidget(self.datatypeCombo)
if self.param is not None and self.param.dataType() is not None:
# QComboBoxes indexes start at 0,
# self.param.datatype start with -1 that is why I need to do +1
datatypeIndex = self.param.dataType() + 1
self.datatypeCombo.setCurrentIndex(datatypeIndex)
self.multipleCheck = QCheckBox()
self.multipleCheck.setText(self.tr('Accept multiple fields'))
self.multipleCheck.setChecked(False)
if self.param is not None:
self.multipleCheck.setChecked(self.param.allowMultiple())
self.verticalLayout.addWidget(self.multipleCheck)
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setToolTip(
self.tr('Default field name, or ; separated list of field names for multiple field parameters'))
if self.param is not None:
default = self.param.defaultValue()
if default is not None:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif self.paramType == parameters.PARAMETER_BAND or \
isinstance(self.param, QgsProcessingParameterBand):
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
idx = 0
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterRasterLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType in (
parameters.PARAMETER_VECTOR, parameters.PARAMETER_TABLE) or
isinstance(self.param, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer))):
self.verticalLayout.addWidget(QLabel(self.tr('Geometry type')))
self.shapetypeCombo = QComboBox()
self.shapetypeCombo.addItem(self.tr('Geometry Not Required'), QgsProcessing.TypeVector)
self.shapetypeCombo.addItem(self.tr('Point'), QgsProcessing.TypeVectorPoint)
self.shapetypeCombo.addItem(self.tr('Line'), QgsProcessing.TypeVectorLine)
self.shapetypeCombo.addItem(self.tr('Polygon'), QgsProcessing.TypeVectorPolygon)
self.shapetypeCombo.addItem(self.tr('Any Geometry Type'), QgsProcessing.TypeVectorAnyGeometry)
if self.param is not None:
self.shapetypeCombo.setCurrentIndex(self.shapetypeCombo.findData(self.param.dataTypes()[0]))
self.verticalLayout.addWidget(self.shapetypeCombo)
elif (self.paramType == parameters.PARAMETER_MULTIPLE or
isinstance(self.param, QgsProcessingParameterMultipleLayers)):
self.verticalLayout.addWidget(QLabel(self.tr('Data type')))
self.datatypeCombo = QComboBox()
self.datatypeCombo.addItem(self.tr('Any Map Layer'), QgsProcessing.TypeMapLayer)
self.datatypeCombo.addItem(self.tr('Vector (No Geometry Required)'), QgsProcessing.TypeVector)
self.datatypeCombo.addItem(self.tr('Vector (Point)'), QgsProcessing.TypeVectorPoint)
self.datatypeCombo.addItem(self.tr('Vector (Line)'), QgsProcessing.TypeVectorLine)
self.datatypeCombo.addItem(self.tr('Vector (Polygon)'), QgsProcessing.TypeVectorPolygon)
self.datatypeCombo.addItem(self.tr('Vector (Any Geometry Type)'), QgsProcessing.TypeVectorAnyGeometry)
self.datatypeCombo.addItem(self.tr('Raster'), QgsProcessing.TypeRaster)
self.datatypeCombo.addItem(self.tr('File'), QgsProcessing.TypeFile)
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.datatypeCombo.findData(self.param.layerType()))
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == parameters.PARAMETER_NUMBER or self.paramType == parameters.PARAMETER_DISTANCE or
isinstance(self.param, (QgsProcessingParameterNumber, QgsProcessingParameterDistance))):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.minimum()))
self.maxTextBox.setText(str(self.param.maximum()))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.defaultValue()
if self.param.dataType() == QgsProcessingParameterNumber.Integer:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_EXPRESSION or
isinstance(self.param, QgsProcessingParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == parameters.PARAMETER_STRING or
isinstance(self.param, QgsProcessingParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_FILE or
isinstance(self.param, QgsProcessingParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(
1 if self.param.behavior() == QgsProcessingParameterFile.Folder else 0)
self.verticalLayout.addWidget(self.fileFolderCombo)
elif (self.paramType == parameters.PARAMETER_POINT or
isinstance(self.param, QgsProcessingParameterPoint)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_CRS or
isinstance(self.param, QgsProcessingParameterCrs)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.selector = QgsProjectionSelectionWidget()
if self.param is not None:
self.selector.setCrs(QgsCoordinateReferenceSystem(self.param.defaultValue()))
else:
self.selector.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
self.verticalLayout.addWidget(self.selector)
elif self.paramType == parameters.PARAMETER_ENUM or \
isinstance(self.param, QgsProcessingParameterEnum):
self.widget = EnumModelerWidget(self)
if self.param is not None:
self.widget.setAllowMultiple(bool(self.param.allowMultiple()))
self.widget.setOptions(self.param.options())
self.widget.setDefault(self.param.defaultValue())
self.verticalLayout.addWidget(self.widget)
elif self.paramType == parameters.PARAMETER_MATRIX or \
isinstance(self.param, QgsProcessingParameterMatrix):
self.widget = MatrixModelerWidget(self)
if self.param is not None:
self.widget.setValue(self.param.headers(), self.param.defaultValue())
self.widget.setFixedRows(self.param.hasFixedNumberRows())
self.verticalLayout.addWidget(self.widget)
elif isinstance(self.param, QgsProcessingDestinationParameter):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultWidget = DestinationSelectionPanel(self.param, self.alg, default_selection=True)
self.verticalLayout.addWidget(self.defaultWidget)
self.verticalLayout.addSpacing(20)
self.requiredCheck = QCheckBox()
self.requiredCheck.setText(self.tr('Mandatory'))
self.requiredCheck.setChecked(True)
if self.param is not None:
self.requiredCheck.setChecked(not self.param.flags() & QgsProcessingParameterDefinition.FlagOptional)
self.verticalLayout.addWidget(self.requiredCheck)
# If child algorithm output is mandatory, disable checkbox
if isinstance(self.param, QgsProcessingDestinationParameter):
provider_name, child_name, output_name = self.param.name().split(':')
child = self.alg.childAlgorithms()['{}:{}'.format(provider_name, child_name)]
model_output = child.modelOutput(output_name)
param_def = child.algorithm().parameterDefinition(model_output.childOutputName())
if not (param_def.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.requiredCheck.setEnabled(False)
self.requiredCheck.setChecked(True)
self.buttonBox = QDialogButtonBox(self)
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel |
QDialogButtonBox.Ok)
self.buttonBox.setObjectName('buttonBox')
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.reject)
self.verticalLayout.addStretch()
self.verticalLayout.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout)
def accept(self):
description = self.nameTextBox.text()
if description.strip() == '':
QMessageBox.warning(self, self.tr('Unable to define parameter'),
self.tr('Invalid parameter name'))
return
if self.param is None:
validChars = \
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
safeName = ''.join(c for c in description if c in validChars)
name = safeName.lower()
i = 2
while self.alg.parameterDefinition(name):
name = safeName.lower() + str(i)
i += 1
else:
name = self.param.name()
if (self.paramType == parameters.PARAMETER_BOOLEAN or
isinstance(self.param, QgsProcessingParameterBoolean)):
self.param = QgsProcessingParameterBoolean(name, description, self.state.isChecked())
elif (self.paramType == parameters.PARAMETER_TABLE_FIELD or
isinstance(self.param, QgsProcessingParameterField)):
if self.parentCombo.currentIndex() < 0:
QMessageBox.warning(self, self.tr('Unable to define parameter'),
self.tr('Wrong or missing parameter values'))
return
parent = self.parentCombo.currentData()
datatype = self.datatypeCombo.currentData()
default = self.defaultTextBox.text()
if not default:
default = None
self.param = QgsProcessingParameterField(name, description, defaultValue=default,
parentLayerParameterName=parent, type=datatype,
allowMultiple=self.multipleCheck.isChecked())
elif (self.paramType == parameters.PARAMETER_BAND or
isinstance(self.param, QgsProcessingParameterBand)):
if self.parentCombo.currentIndex() < 0:
QMessageBox.warning(self, self.tr('Unable to define parameter'),
self.tr('Wrong or missing parameter values'))
return
parent = self.parentCombo.currentData()
self.param = QgsProcessingParameterBand(name, description, None, parent)
elif (self.paramType == parameters.PARAMETER_MAP_LAYER or
isinstance(self.param, QgsProcessingParameterMapLayer)):
self.param = QgsProcessingParameterMapLayer(
name, description)
elif (self.paramType == parameters.PARAMETER_RASTER or
isinstance(self.param, QgsProcessingParameterRasterLayer)):
self.param = QgsProcessingParameterRasterLayer(
name, description)
elif (self.paramType == parameters.PARAMETER_TABLE or
isinstance(self.param, QgsProcessingParameterVectorLayer)):
self.param = QgsProcessingParameterVectorLayer(
name, description,
[self.shapetypeCombo.currentData()])
elif (self.paramType == parameters.PARAMETER_VECTOR or
isinstance(self.param, QgsProcessingParameterFeatureSource)):
self.param = QgsProcessingParameterFeatureSource(
name, description,
[self.shapetypeCombo.currentData()])
elif (self.paramType == parameters.PARAMETER_MULTIPLE or
isinstance(self.param, QgsProcessingParameterMultipleLayers)):
self.param = QgsProcessingParameterMultipleLayers(
name, description,
self.datatypeCombo.currentData())
elif (self.paramType == parameters.PARAMETER_NUMBER or
isinstance(self.param, (QgsProcessingParameterNumber, QgsProcessingParameterDistance))):
try:
self.param = QgsProcessingParameterNumber(name, description, QgsProcessingParameterNumber.Double,
self.defaultTextBox.text())
vmin = self.minTextBox.text().strip()
if not vmin == '':
self.param.setMinimum(float(vmin))
vmax = self.maxTextBox.text().strip()
if not vmax == '':
self.param.setMaximum(float(vmax))
except:
QMessageBox.warning(self, self.tr('Unable to define parameter'),
self.tr('Wrong or missing parameter values'))
return
elif (self.paramType == parameters.PARAMETER_EXPRESSION or
isinstance(self.param, QgsProcessingParameterExpression)):
parent = self.parentCombo.currentData()
self.param = QgsProcessingParameterExpression(name, description,
str(self.defaultEdit.expression()),
parent)
elif (self.paramType == parameters.PARAMETER_STRING or
isinstance(self.param, QgsProcessingParameterString)):
self.param = QgsProcessingParameterString(name, description,
str(self.defaultTextBox.text()))
elif (self.paramType == parameters.PARAMETER_EXTENT or
isinstance(self.param, QgsProcessingParameterExtent)):
self.param = QgsProcessingParameterExtent(name, description)
elif (self.paramType == parameters.PARAMETER_FILE or
isinstance(self.param, QgsProcessingParameterFile)):
isFolder = self.fileFolderCombo.currentIndex() == 1
self.param = QgsProcessingParameterFile(name, description,
QgsProcessingParameterFile.Folder if isFolder else QgsProcessingParameterFile.File)
elif (self.paramType == parameters.PARAMETER_POINT or
isinstance(self.param, QgsProcessingParameterPoint)):
self.param = QgsProcessingParameterPoint(name, description,
str(self.defaultTextBox.text()))
elif (self.paramType == parameters.PARAMETER_CRS or
isinstance(self.param, QgsProcessingParameterCrs)):
self.param = QgsProcessingParameterCrs(name, description, self.selector.crs().authid())
elif (self.paramType == parameters.PARAMETER_ENUM or
isinstance(self.param, QgsProcessingParameterEnum)):
self.param = QgsProcessingParameterEnum(name, description, self.widget.options(), self.widget.allowMultiple(), self.widget.defaultOptions())
elif (self.paramType == parameters.PARAMETER_MATRIX or
isinstance(self.param, QgsProcessingParameterMatrix)):
self.param = QgsProcessingParameterMatrix(name, description, hasFixedNumberRows=self.widget.fixedRows(), headers=self.widget.headers(), defaultValue=self.widget.value())
# Destination parameter
elif (isinstance(self.param, QgsProcessingParameterFeatureSink)):
self.param = QgsProcessingParameterFeatureSink(
name=name,
description=self.param.description(),
type=self.param.dataType(),
defaultValue=self.defaultWidget.getValue())
elif (isinstance(self.param, QgsProcessingParameterFileDestination)):
self.param = QgsProcessingParameterFileDestination(
name=name,
description=self.param.description(),
fileFilter=self.param.fileFilter(),
defaultValue=self.defaultWidget.getValue())
elif (isinstance(self.param, QgsProcessingParameterFolderDestination)):
self.param = QgsProcessingParameterFolderDestination(
name=name,
description=self.param.description(),
defaultValue=self.defaultWidget.getValue())
elif (isinstance(self.param, QgsProcessingParameterRasterDestination)):
self.param = QgsProcessingParameterRasterDestination(
name=name,
description=self.param.description(),
defaultValue=self.defaultWidget.getValue())
elif (isinstance(self.param, QgsProcessingParameterVectorDestination)):
self.param = QgsProcessingParameterVectorDestination(
name=name,
description=self.param.description(),
type=self.param.dataType(),
defaultValue=self.defaultWidget.getValue())
else:
if self.paramType:
typeId = self.paramType
else:
typeId = self.param.type()
paramTypeDef = QgsApplication.instance().processingRegistry().parameterType(typeId)
if not paramTypeDef:
msg = self.tr('The parameter `{}` is not registered, are you missing a required plugin?'.format(typeId))
raise UndefinedParameterException(msg)
self.param = paramTypeDef.create(name)
self.param.setDescription(description)
self.param.setMetadata(paramTypeDef.metadata())
if not self.requiredCheck.isChecked():
self.param.setFlags(self.param.flags() | QgsProcessingParameterDefinition.FlagOptional)
else:
self.param.setFlags(self.param.flags() & ~QgsProcessingParameterDefinition.FlagOptional)
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDefinitionDialogGeometry", self.saveGeometry())
QDialog.accept(self)
def reject(self):
self.param = None
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDefinitionDialogGeometry", self.saveGeometry())
QDialog.reject(self)