def loadAlgorithms(self):
if self.is_loading:
return
self.is_loading = True
for definition in self.model_definitions.values():
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(definition):
self.addAlgorithm(algorithm)
else:
QgsMessageLog.logMessage(
self.tr('Could not load model from project', 'ProjectProvider'),
self.tr('Processing'), Qgis.Critical)
self.is_loading = False
def loadAlgorithms(self):
if self.is_loading:
return
self.is_loading = True
for definition in self.model_definitions:
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(definition):
self.addAlgorithm(algorithm)
else:
QgsMessageLog.logMessage(
self.tr('Could not load model from project', 'ProjectProvider'),
self.tr('Processing'), Qgis.Critical)
self.is_loading = False
def read_project(self, doc):
"""
Reads the project model definitions from the project DOM document
:param doc: DOM document
"""
self.model_definitions = {}
project_models_nodes = doc.elementsByTagName('projectModels')
if project_models_nodes:
project_models_node = project_models_nodes.at(0)
model_nodes = project_models_node.childNodes()
for n in range(model_nodes.count()):
model_element = model_nodes.at(n).toElement()
definition = QgsXmlUtils.readVariant(model_element)
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(definition):
self.model_definitions[algorithm.name()] = definition
self.refreshAlgorithms()
def read_project(self, doc):
"""
Reads the project model definitions from the project DOM document
:param doc: DOM document
"""
self.model_definitions = {}
project_models_nodes = doc.elementsByTagName('projectModels')
if project_models_nodes:
project_models_node = project_models_nodes.at(0)
model_nodes = project_models_node.childNodes()
for n in range(model_nodes.count()):
model_element = model_nodes.at(n).toElement()
definition = QgsXmlUtils.readVariant(model_element)
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(definition):
self.model_definitions[algorithm.name()] = definition
self.refreshAlgorithms()
def remove_model(self, model):
"""
Removes a model from the project
:type model: QgsProcessingModelAlgorithm
:param model: model to remove
"""
if model is None:
return
filtered_model_definitions = []
for m in self.model_definitions:
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(m) and algorithm.name() == model.name():
# found matching model definition, skip it
continue
filtered_model_definitions.append(m)
self.model_definitions = filtered_model_definitions
self.refreshAlgorithms()
def remove_model(self, model):
"""
Removes a model from the project
:type model: QgsProcessingModelAlgorithm
:param model: model to remove
"""
if model is None:
return
filtered_model_definitions = []
for m in self.model_definitions:
algorithm = QgsProcessingModelAlgorithm()
if algorithm.loadVariant(m) and algorithm.name() == model.name():
# found matching model definition, skip it
continue
filtered_model_definitions.append(m)
self.model_definitions = filtered_model_definitions
self.refreshAlgorithms()
