mirror of
https://github.com/qgis/QGIS.git
synced 2025-11-04 00:04:25 -05:00
146 lines
5.2 KiB
Python
146 lines
5.2 KiB
Python
"""
|
|
***************************************************************************
|
|
ExecuteSQLWidget.py
|
|
---------------------
|
|
Date : November 2017
|
|
Copyright : (C) 2017 by Paul Blottiere
|
|
Email : blottiere dot paul 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__ = 'Paul Blottiere'
|
|
__date__ = 'November 2018'
|
|
__copyright__ = '(C) 2018, Paul Blottiere'
|
|
|
|
import os
|
|
|
|
from qgis.PyQt import uic
|
|
|
|
from qgis.core import (
|
|
Qgis,
|
|
QgsExpressionContextScope,
|
|
QgsProcessingParameterString,
|
|
QgsProcessingParameterNumber,
|
|
QgsExpression,
|
|
QgsProcessingModelChildParameterSource
|
|
)
|
|
|
|
from qgis.gui import QgsFieldExpressionWidget
|
|
|
|
from processing.gui.wrappers import (WidgetWrapper,
|
|
dialogTypes,
|
|
DIALOG_MODELER)
|
|
|
|
pluginPath = os.path.dirname(__file__)
|
|
WIDGET, BASE = uic.loadUiType(os.path.join(pluginPath, 'ExecuteSQLWidgetBase.ui'))
|
|
|
|
|
|
class ExecuteSQLWidget(BASE, WIDGET):
|
|
|
|
def __init__(self, dialog):
|
|
super().__init__(None)
|
|
self.setupUi(self)
|
|
self.dialog = dialog
|
|
self.dialogType = dialogTypes[dialog.__class__.__name__]
|
|
|
|
self.mExpressionWidget = QgsFieldExpressionWidget()
|
|
|
|
# add model parameters in context scope if called from modeler
|
|
if self.dialogType == DIALOG_MODELER:
|
|
strings = dialog.getAvailableValuesOfType(
|
|
[QgsProcessingParameterString, QgsProcessingParameterNumber], [])
|
|
model_params = [dialog.resolveValueDescription(s) for s in strings]
|
|
|
|
scope = QgsExpressionContextScope()
|
|
for param in model_params:
|
|
var = QgsExpressionContextScope.StaticVariable(param)
|
|
scope.addVariable(var)
|
|
|
|
self.mExpressionWidget.appendScope(scope)
|
|
|
|
self.mHLayout.insertWidget(0, self.mExpressionWidget)
|
|
|
|
self.mInsert.clicked.connect(self.insert)
|
|
|
|
def insert(self):
|
|
if self.mExpressionWidget.currentText():
|
|
exp = f'[%{self.mExpressionWidget.currentText()}%]'
|
|
self.mText.insertPlainText(exp)
|
|
|
|
def setValue(self, value):
|
|
text = value
|
|
|
|
if self.dialogType == DIALOG_MODELER:
|
|
if isinstance(value, list):
|
|
for v in value:
|
|
if isinstance(v, QgsProcessingModelChildParameterSource) \
|
|
and v.source() == Qgis.ProcessingModelChildParameterSource.ExpressionText:
|
|
text = v.expressionText()
|
|
|
|
# replace parameter's name by expression (diverging after model save)
|
|
names = QgsExpression.referencedVariables(text)
|
|
|
|
strings = self.dialog.getAvailableValuesOfType(
|
|
[QgsProcessingParameterString, QgsProcessingParameterNumber], [])
|
|
model_params = [(self.dialog.resolveValueDescription(s), s) for s in strings]
|
|
|
|
for k, v in model_params:
|
|
if v.parameterName() in names:
|
|
text = text.replace(f'[% @{v.parameterName()} %]', f'[% @{k} %]')
|
|
|
|
self.mText.setPlainText(text)
|
|
|
|
def value(self):
|
|
value = self.mText.toPlainText()
|
|
|
|
if self.dialogType == DIALOG_MODELER:
|
|
expression_values = self._expressionValues(value)
|
|
if len(expression_values) > 1:
|
|
value = expression_values
|
|
|
|
return value
|
|
|
|
def _expressionValues(self, text):
|
|
strings = self.dialog.getAvailableValuesOfType(
|
|
[QgsProcessingParameterString, QgsProcessingParameterNumber], [])
|
|
model_params = [(self.dialog.resolveValueDescription(s), s) for s in strings]
|
|
|
|
variables = QgsExpression.referencedVariables(text)
|
|
|
|
# replace description by parameter's name (diverging after model save)
|
|
descriptions = QgsExpression.referencedVariables(text)
|
|
|
|
for k, v in model_params:
|
|
if k in descriptions:
|
|
text = text.replace(f'[% @{k} %]', f'[% @{v.parameterName()} %]')
|
|
|
|
src = QgsProcessingModelChildParameterSource.fromExpressionText(text)
|
|
|
|
# add parameters currently used by the expression
|
|
expression_values = [src]
|
|
|
|
for k, v in model_params:
|
|
if k in variables:
|
|
expression_values.append(v)
|
|
|
|
return expression_values
|
|
|
|
|
|
class ExecuteSQLWidgetWrapper(WidgetWrapper):
|
|
|
|
def createWidget(self):
|
|
return ExecuteSQLWidget(self.dialog)
|
|
|
|
def setValue(self, value):
|
|
self.widget.setValue(value)
|
|
|
|
def value(self):
|
|
return self.widget.value()
|