mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-31 00:06:02 -04:00
137 lines
5.5 KiB
Python
137 lines
5.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ModelerAlgorithmProvider.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 os
|
|
|
|
from qgis.PyQt.QtXml import QDomDocument
|
|
|
|
from qgis.core import (Qgis,
|
|
QgsApplication,
|
|
QgsProcessingProvider,
|
|
QgsMessageLog,
|
|
QgsProcessingModelAlgorithm,
|
|
QgsProcessingUtils,
|
|
QgsXmlUtils)
|
|
|
|
from processing.core.ProcessingConfig import ProcessingConfig, Setting
|
|
|
|
from processing.gui.ProviderActions import (ProviderActions,
|
|
ProviderContextMenuActions)
|
|
|
|
from processing.modeler.AddModelFromFileAction import AddModelFromFileAction
|
|
from processing.modeler.CreateNewModelAction import CreateNewModelAction
|
|
from processing.modeler.DeleteModelAction import DeleteModelAction
|
|
from processing.modeler.EditModelAction import EditModelAction
|
|
from processing.modeler.OpenModelFromFileAction import OpenModelFromFileAction
|
|
from processing.modeler.exceptions import WrongModelException
|
|
from processing.modeler.ModelerUtils import ModelerUtils
|
|
|
|
pluginPath = os.path.split(os.path.dirname(__file__))[0]
|
|
|
|
|
|
class ModelerAlgorithmProvider(QgsProcessingProvider):
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.actions = [CreateNewModelAction(), OpenModelFromFileAction(), AddModelFromFileAction()]
|
|
self.contextMenuActions = [EditModelAction(), DeleteModelAction()]
|
|
self.algs = []
|
|
self.isLoading = False
|
|
|
|
# must reload models if providers list is changed - previously unavailable algorithms
|
|
# which models depend on may now be available
|
|
QgsApplication.processingRegistry().providerAdded.connect(self.onProviderAdded)
|
|
|
|
def onProviderAdded(self, provider_id):
|
|
self.refreshAlgorithms()
|
|
|
|
def load(self):
|
|
ProcessingConfig.settingIcons[self.name()] = self.icon()
|
|
ProcessingConfig.addSetting(Setting(self.name(),
|
|
ModelerUtils.MODELS_FOLDER, self.tr('Models folder', 'ModelerAlgorithmProvider'),
|
|
ModelerUtils.defaultModelsFolder(), valuetype=Setting.MULTIPLE_FOLDERS))
|
|
ProviderActions.registerProviderActions(self, self.actions)
|
|
ProviderContextMenuActions.registerProviderContextMenuActions(self.contextMenuActions)
|
|
ProcessingConfig.readSettings()
|
|
self.refreshAlgorithms()
|
|
return True
|
|
|
|
def unload(self):
|
|
ProviderActions.deregisterProviderActions(self)
|
|
ProviderContextMenuActions.deregisterProviderContextMenuActions(self.contextMenuActions)
|
|
|
|
def modelsFolder(self):
|
|
return ModelerUtils.modelsFolders()[0]
|
|
|
|
def name(self):
|
|
return self.tr('Models', 'ModelerAlgorithmProvider')
|
|
|
|
def id(self):
|
|
return 'model'
|
|
|
|
def icon(self):
|
|
return QgsApplication.getThemeIcon("/processingModel.svg")
|
|
|
|
def svgIconPath(self):
|
|
return QgsApplication.iconPath("processingModel.svg")
|
|
|
|
def supportsNonFileBasedOutput(self):
|
|
return True
|
|
|
|
def loadAlgorithms(self):
|
|
if self.isLoading:
|
|
return
|
|
self.isLoading = True
|
|
self.algs = []
|
|
folders = ModelerUtils.modelsFolders()
|
|
for f in folders:
|
|
self.loadFromFolder(f)
|
|
for a in self.algs:
|
|
self.addAlgorithm(a)
|
|
self.isLoading = False
|
|
|
|
def loadFromFolder(self, folder):
|
|
if not os.path.exists(folder):
|
|
return
|
|
for path, subdirs, files in os.walk(folder):
|
|
for descriptionFile in files:
|
|
if descriptionFile.endswith('model3'):
|
|
try:
|
|
fullpath = os.path.join(path, descriptionFile)
|
|
|
|
alg = QgsProcessingModelAlgorithm()
|
|
if alg.fromFile(fullpath):
|
|
if alg.name():
|
|
alg.setSourceFilePath(fullpath)
|
|
self.algs.append(alg)
|
|
else:
|
|
QgsMessageLog.logMessage(self.tr('Could not load model {0}', 'ModelerAlgorithmProvider').format(descriptionFile),
|
|
self.tr('Processing'), Qgis.Critical)
|
|
except WrongModelException as e:
|
|
QgsMessageLog.logMessage(self.tr('Could not load model {0}\n{1}', 'ModelerAlgorithmProvider').format(descriptionFile, str(e)),
|
|
self.tr('Processing'), Qgis.Critical)
|