def testFilterByLayer(self):
""" test filtering by layer"""
QgsProject.instance().clear()
m = QgsMapLayerComboBox()
l1 = QgsVectorLayer(
"Point?crs=EPSG:3111&field=fldtxt:string&field=fldint:integer",
'layer 1', "memory")
QgsProject.instance().addMapLayer(l1)
l2 = QgsVectorLayer(
"Polygon?crs=EPSG:3111&field=fldtxt:string&field=fldint:integer",
'lAyEr 2', "memory")
QgsProject.instance().addMapLayer(l2)
l3 = QgsVectorLayer("None?field=fldtxt:string&field=fldint:integer",
'another', "memory")
QgsProject.instance().addMapLayer(l3)
l4 = QgsVectorLayer(
"LineString?crs=EPSG:3111&field=fldtxt:string&field=fldint:integer",
'final layer', "memory")
QgsProject.instance().addMapLayer(l4)
self.assertEqual(m.count(), 4)
self.assertEqual(m.itemText(0), 'another')
self.assertEqual(m.itemText(1), 'final layer')
self.assertEqual(m.itemText(2), 'layer 1')
self.assertEqual(m.itemText(3), 'lAyEr 2')
m.setExceptedLayerList([l1, l3])
self.assertEqual(m.count(), 2)
self.assertEqual(m.itemText(0), 'final layer')
self.assertEqual(m.itemText(1), 'lAyEr 2')
m.setExceptedLayerList([l2, l4])
self.assertEqual(m.count(), 2)
self.assertEqual(m.itemText(0), 'another')
self.assertEqual(m.itemText(1), 'layer 1')
def testMeshLayer(self):
m = QgsMapLayerComboBox()
l1 = create_mesh_layer("l1")
QgsProject.instance().addMapLayer(l1)
l2 = create_layer('l2')
QgsProject.instance().addMapLayer(l2)
m.setFilters(QgsMapLayerProxyModel.MeshLayer)
self.assertEqual(m.filters(), QgsMapLayerProxyModel.MeshLayer)
self.assertEqual(m.count(), 1)
self.assertEqual(m.itemText(0), 'l1')
class FieldMappingDialog(QDialog, FORM_CLASS):
"""Dialog implementation class for the InaSAFE field mapping tool."""
def __init__(self, parent=None, iface=None, setting=None):
"""Constructor."""
QDialog.__init__(self, parent)
self.setupUi(self)
self.setWindowTitle(self.tr('InaSAFE Field Mapping Tool'))
icon = resources_path('img', 'icons', 'show-mapping-tool.svg')
self.setWindowIcon(QIcon(icon))
self.parent = parent
self.iface = iface
if setting is None:
setting = QSettings()
self.setting = setting
self.keyword_io = KeywordIO()
self.layer = None
self.metadata = {}
self.layer_input_layout = QHBoxLayout()
self.layer_label = QLabel(tr('Layer'))
self.layer_combo_box = QgsMapLayerComboBox()
# Filter only for Polygon and Point
self.layer_combo_box.setFilters(
QgsMapLayerProxyModel.PolygonLayer |
QgsMapLayerProxyModel.PointLayer)
# Filter out a layer that don't have layer groups
excepted_layers = []
for i in range(self.layer_combo_box.count()):
layer = self.layer_combo_box.layer(i)
try:
keywords = self.keyword_io.read_keywords(layer)
except (KeywordNotFoundError, NoKeywordsFoundError):
excepted_layers.append(layer)
continue
layer_purpose = keywords.get('layer_purpose')
if not layer_purpose:
excepted_layers.append(layer)
continue
if layer_purpose == layer_purpose_exposure['key']:
layer_subcategory = keywords.get('exposure')
elif layer_purpose == layer_purpose_hazard['key']:
layer_subcategory = keywords.get('hazard')
else:
layer_subcategory = None
field_groups = get_field_groups(layer_purpose, layer_subcategory)
if len(field_groups) == 0:
excepted_layers.append(layer)
continue
self.layer_combo_box.setExceptedLayerList(excepted_layers)
# Select the active layer.
if self.iface.activeLayer():
found = self.layer_combo_box.findText(
self.iface.activeLayer().name())
if found > -1:
self.layer_combo_box.setLayer(self.iface.activeLayer())
self.field_mapping_widget = None
self.main_stacked_widget.setCurrentIndex(1)
# Input
self.layer_input_layout.addWidget(self.layer_label)
self.layer_input_layout.addWidget(self.layer_combo_box)
self.header_label = QLabel()
self.header_label.setWordWrap(True)
self.main_layout.addWidget(self.header_label)
self.main_layout.addLayout(self.layer_input_layout)
# Signal
self.layer_combo_box.layerChanged.connect(self.set_layer)
if self.layer_combo_box.currentLayer():
self.set_layer(self.layer_combo_box.currentLayer())
# Set up things for context help
self.help_button = self.button_box.button(QDialogButtonBox.Help)
# Allow toggling the help button
self.help_button.setCheckable(True)
self.help_button.toggled.connect(self.help_toggled)
# Set up things for ok button
self.ok_button = self.button_box.button(QDialogButtonBox.Ok)
self.ok_button.clicked.connect(self.accept)
# Set up things for cancel button
self.cancel_button = self.button_box.button(QDialogButtonBox.Cancel)
self.cancel_button.clicked.connect(self.reject)
def set_layer(self, layer=None, keywords=None):
"""Set layer and update UI accordingly.
:param layer: A QgsVectorLayer.
:type layer: QgsVectorLayer
:param keywords: Keywords for the layer.
:type keywords: dict, None
"""
if self.field_mapping_widget is not None:
self.field_mapping_widget.setParent(None)
self.field_mapping_widget.close()
self.field_mapping_widget.deleteLater()
self.main_layout.removeWidget(self.field_mapping_widget)
if layer:
self.layer = layer
else:
self.layer = self.layer_combo_box.currentLayer()
if not self.layer:
return
if keywords is not None:
self.metadata = keywords
else:
# Always read from metadata file.
try:
self.metadata = self.keyword_io.read_keywords(self.layer)
except (
NoKeywordsFoundError,
KeywordNotFoundError,
MetadataReadError) as e:
raise e
if 'inasafe_default_values' not in self.metadata:
self.metadata['inasafe_default_values'] = {}
if 'inasafe_fields' not in self.metadata:
self.metadata['inasafe_fields'] = {}
self.field_mapping_widget = FieldMappingWidget(
parent=self, iface=self.iface)
self.field_mapping_widget.set_layer(self.layer, self.metadata)
self.field_mapping_widget.show()
self.main_layout.addWidget(self.field_mapping_widget)
# Set header label
group_names = [
self.field_mapping_widget.tabText(i) for i in range(
self.field_mapping_widget.count())]
if len(group_names) == 0:
header_text = tr(
'There is no field group for this layer. Please select '
'another layer.')
self.header_label.setText(header_text)
return
elif len(group_names) == 1:
pretty_group_name = group_names[0]
elif len(group_names) == 2:
pretty_group_name = group_names[0] + tr(' and ') + group_names[1]
else:
pretty_group_name = ', '.join(group_names[:-1])
pretty_group_name += tr(', and {0}').format(group_names[-1])
header_text = tr(
'Please fill the information for every tab to determine the '
'attribute for {0} group.').format(pretty_group_name)
self.header_label.setText(header_text)
@pyqtSlot()
@pyqtSignature('bool') # prevents actions being handled twice
def help_toggled(self, flag):
"""Show or hide the help tab in the stacked widget.
.. versionadded: 3.2.1
:param flag: Flag indicating whether help should be shown or hidden.
:type flag: bool
"""
if flag:
self.help_button.setText(self.tr('Hide Help'))
self.show_help()
else:
self.help_button.setText(self.tr('Show Help'))
self.hide_help()
def hide_help(self):
"""Hide the usage info from the user.
.. versionadded: 3.2.1
"""
self.main_stacked_widget.setCurrentIndex(1)
def show_help(self):
"""Show usage info to the user."""
# Read the header and footer html snippets
self.main_stacked_widget.setCurrentIndex(0)
header = html_header()
footer = html_footer()
string = header
message = field_mapping_help()
string += message.to_html()
string += footer
self.help_web_view.setHtml(string)
def save_metadata(self):
"""Save metadata based on the field mapping state."""
metadata = self.field_mapping_widget.get_field_mapping()
for key, value in metadata['fields'].items():
# Delete the key if it's set to None
if key in self.metadata['inasafe_default_values']:
self.metadata['inasafe_default_values'].pop(key)
if value is None or value == []:
if key in self.metadata['inasafe_fields']:
self.metadata['inasafe_fields'].pop(key)
else:
self.metadata['inasafe_fields'][key] = value
for key, value in metadata['values'].items():
# Delete the key if it's set to None
if key in self.metadata['inasafe_fields']:
self.metadata['inasafe_fields'].pop(key)
if value is None:
if key in self.metadata['inasafe_default_values']:
self.metadata['inasafe_default_values'].pop(key)
else:
self.metadata['inasafe_default_values'][key] = value
# Save metadata
try:
self.keyword_io.write_keywords(
layer=self.layer, keywords=self.metadata)
except InaSAFEError, e:
error_message = get_error_message(e)
# noinspection PyCallByClass,PyTypeChecker,PyArgumentList
QMessageBox.warning(
self, self.tr('InaSAFE'),
((self.tr(
'An error was encountered when saving the following '
'keywords:\n %s') % error_message.to_html())))
# Update setting fir recent value
if self.metadata.get('inasafe_default_values'):
for key, value in \
self.metadata['inasafe_default_values'].items():
set_inasafe_default_value_qsetting(
self.setting, key, RECENT, value)
def testAdditionalLayers(self):
QgsProject.instance().clear()
l1 = create_layer('l1')
l2 = create_layer('l2')
QgsProject.instance().addMapLayers([l1, l2])
m = QgsMapLayerComboBox()
self.assertEqual(m.count(), 2)
l3 = create_layer('l3')
l4 = create_layer('l4')
m.setAdditionalLayers([l3, l4])
self.assertEqual(m.count(), 4)
m.setAdditionalItems(['a', 'b'])
self.assertEqual(m.count(), 6)
self.assertEqual(m.itemText(0), 'l1')
self.assertEqual(m.itemText(1), 'l2')
self.assertEqual(m.itemText(2), 'l3')
self.assertEqual(m.itemText(3), 'l4')
self.assertEqual(m.itemText(4), 'a')
self.assertEqual(m.itemText(5), 'b')
m.setAllowEmptyLayer(True)
self.assertEqual(m.count(), 7)
self.assertFalse(m.itemText(0))
self.assertEqual(m.itemText(1), 'l1')
self.assertEqual(m.itemText(2), 'l2')
self.assertEqual(m.itemText(3), 'l3')
self.assertEqual(m.itemText(4), 'l4')
self.assertEqual(m.itemText(5), 'a')
self.assertEqual(m.itemText(6), 'b')
l3.deleteLater()
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
self.assertEqual(m.count(), 6)
self.assertFalse(m.itemText(0))
self.assertEqual(m.itemText(1), 'l1')
self.assertEqual(m.itemText(2), 'l2')
self.assertEqual(m.itemText(3), 'l4')
self.assertEqual(m.itemText(4), 'a')
self.assertEqual(m.itemText(5), 'b')
l5 = create_layer('l5')
l6 = create_layer('l6')
m.setAdditionalLayers([l5, l6, l4])
self.assertEqual(m.count(), 8)
self.assertFalse(m.itemText(0))
self.assertEqual(m.itemText(1), 'l1')
self.assertEqual(m.itemText(2), 'l2')
self.assertEqual(m.itemText(3), 'l4')
self.assertEqual(m.itemText(4), 'l5')
self.assertEqual(m.itemText(5), 'l6')
self.assertEqual(m.itemText(6), 'a')
self.assertEqual(m.itemText(7), 'b')
m.setAdditionalLayers([l5, l4])
self.assertEqual(m.count(), 7)
self.assertFalse(m.itemText(0))
self.assertEqual(m.itemText(1), 'l1')
self.assertEqual(m.itemText(2), 'l2')
self.assertEqual(m.itemText(3), 'l4')
self.assertEqual(m.itemText(4), 'l5')
self.assertEqual(m.itemText(5), 'a')
self.assertEqual(m.itemText(6), 'b')
QgsProject.instance().removeMapLayers([l1.id(), l2.id()])
self.assertEqual(m.count(), 5)
self.assertFalse(m.itemText(0))
self.assertEqual(m.itemText(1), 'l4')
self.assertEqual(m.itemText(2), 'l5')
self.assertEqual(m.itemText(3), 'a')
self.assertEqual(m.itemText(4), 'b')
class FieldMappingDialog(QDialog, FORM_CLASS):
"""Dialog implementation class for the InaSAFE field mapping tool."""
def __init__(self, parent=None, iface=None, setting=None):
"""Constructor."""
QDialog.__init__(self, parent)
self.setupUi(self)
self.setWindowTitle(self.tr('InaSAFE Field Mapping Tool'))
icon = resources_path('img', 'icons', 'show-mapping-tool.svg')
self.setWindowIcon(QIcon(icon))
self.parent = parent
self.iface = iface
if setting is None:
setting = QSettings()
self.setting = setting
self.keyword_io = KeywordIO()
self.layer = None
self.metadata = {}
self.layer_input_layout = QHBoxLayout()
self.layer_label = QLabel(tr('Layer'))
self.layer_combo_box = QgsMapLayerComboBox()
# Filter only for Polygon and Point
self.layer_combo_box.setFilters(
QgsMapLayerProxyModel.PolygonLayer
| QgsMapLayerProxyModel.PointLayer)
# Filter out a layer that don't have layer groups
excepted_layers = []
for i in range(self.layer_combo_box.count()):
layer = self.layer_combo_box.layer(i)
try:
keywords = self.keyword_io.read_keywords(layer)
except (KeywordNotFoundError, NoKeywordsFoundError):
excepted_layers.append(layer)
continue
layer_purpose = keywords.get('layer_purpose')
if not layer_purpose:
excepted_layers.append(layer)
continue
if layer_purpose == layer_purpose_exposure['key']:
layer_subcategory = keywords.get('exposure')
elif layer_purpose == layer_purpose_hazard['key']:
layer_subcategory = keywords.get('hazard')
else:
layer_subcategory = None
field_groups = get_field_groups(layer_purpose, layer_subcategory)
if len(field_groups) == 0:
excepted_layers.append(layer)
continue
self.layer_combo_box.setExceptedLayerList(excepted_layers)
# Select the active layer.
if self.iface.activeLayer():
found = self.layer_combo_box.findText(
self.iface.activeLayer().name())
if found > -1:
self.layer_combo_box.setLayer(self.iface.activeLayer())
self.field_mapping_widget = None
self.main_stacked_widget.setCurrentIndex(1)
# Input
self.layer_input_layout.addWidget(self.layer_label)
self.layer_input_layout.addWidget(self.layer_combo_box)
self.header_label = QLabel()
self.header_label.setWordWrap(True)
self.main_layout.addWidget(self.header_label)
self.main_layout.addLayout(self.layer_input_layout)
# Signal
self.layer_combo_box.layerChanged.connect(self.set_layer)
if self.layer_combo_box.currentLayer():
self.set_layer(self.layer_combo_box.currentLayer())
# Set up things for context help
self.help_button = self.button_box.button(QDialogButtonBox.Help)
# Allow toggling the help button
self.help_button.setCheckable(True)
self.help_button.toggled.connect(self.help_toggled)
# Set up things for ok button
self.ok_button = self.button_box.button(QDialogButtonBox.Ok)
self.ok_button.clicked.connect(self.accept)
# Set up things for cancel button
self.cancel_button = self.button_box.button(QDialogButtonBox.Cancel)
self.cancel_button.clicked.connect(self.reject)
def set_layer(self, layer=None, keywords=None):
"""Set layer and update UI accordingly.
:param layer: A QgsVectorLayer.
:type layer: QgsVectorLayer
:param keywords: Keywords for the layer.
:type keywords: dict, None
"""
if self.field_mapping_widget is not None:
self.field_mapping_widget.setParent(None)
self.field_mapping_widget.close()
self.field_mapping_widget.deleteLater()
self.main_layout.removeWidget(self.field_mapping_widget)
self.field_mapping_widget = None
if layer:
self.layer = layer
else:
self.layer = self.layer_combo_box.currentLayer()
if not self.layer:
return
if keywords is not None:
self.metadata = keywords
else:
# Always read from metadata file.
try:
self.metadata = self.keyword_io.read_keywords(self.layer)
except (
NoKeywordsFoundError,
KeywordNotFoundError,
MetadataReadError) as e:
raise e
if 'inasafe_default_values' not in self.metadata:
self.metadata['inasafe_default_values'] = {}
if 'inasafe_fields' not in self.metadata:
self.metadata['inasafe_fields'] = {}
self.field_mapping_widget = FieldMappingWidget(
parent=self, iface=self.iface)
self.field_mapping_widget.set_layer(self.layer, self.metadata)
self.field_mapping_widget.show()
self.main_layout.addWidget(self.field_mapping_widget)
# Set header label
group_names = [
self.field_mapping_widget.tabText(i) for i in range(
self.field_mapping_widget.count())]
if len(group_names) == 0:
header_text = tr(
'There is no field group for this layer. Please select '
'another layer.')
self.header_label.setText(header_text)
return
elif len(group_names) == 1:
pretty_group_name = group_names[0]
elif len(group_names) == 2:
pretty_group_name = group_names[0] + tr(' and ') + group_names[1]
else:
pretty_group_name = ', '.join(group_names[:-1])
pretty_group_name += tr(', and {0}').format(group_names[-1])
header_text = tr(
'Please fill the information for every tab to determine the '
'attribute for {0} group.').format(pretty_group_name)
self.header_label.setText(header_text)
@pyqtSlot(bool) # prevents actions being handled twice
def help_toggled(self, flag):
"""Show or hide the help tab in the stacked widget.
.. versionadded: 3.2.1
:param flag: Flag indicating whether help should be shown or hidden.
:type flag: bool
"""
if flag:
self.help_button.setText(self.tr('Hide Help'))
self.show_help()
else:
self.help_button.setText(self.tr('Show Help'))
self.hide_help()
def hide_help(self):
"""Hide the usage info from the user.
.. versionadded: 3.2.1
"""
self.main_stacked_widget.setCurrentIndex(1)
def show_help(self):
"""Show usage info to the user."""
# Read the header and footer html snippets
self.main_stacked_widget.setCurrentIndex(0)
header = html_header()
footer = html_footer()
string = header
message = field_mapping_help()
string += message.to_html()
string += footer
self.help_web_view.setHtml(string)
def save_metadata(self):
"""Save metadata based on the field mapping state."""
metadata = self.field_mapping_widget.get_field_mapping()
for key, value in list(metadata['fields'].items()):
# Delete the key if it's set to None
if key in self.metadata['inasafe_default_values']:
self.metadata['inasafe_default_values'].pop(key)
if value is None or value == []:
if key in self.metadata['inasafe_fields']:
self.metadata['inasafe_fields'].pop(key)
else:
self.metadata['inasafe_fields'][key] = value
for key, value in list(metadata['values'].items()):
# Delete the key if it's set to None
if key in self.metadata['inasafe_fields']:
self.metadata['inasafe_fields'].pop(key)
if value is None:
if key in self.metadata['inasafe_default_values']:
self.metadata['inasafe_default_values'].pop(key)
else:
self.metadata['inasafe_default_values'][key] = value
# Save metadata
try:
self.keyword_io.write_keywords(
layer=self.layer, keywords=self.metadata)
except InaSAFEError as e:
error_message = get_error_message(e)
# noinspection PyCallByClass,PyTypeChecker,PyArgumentList
QMessageBox.warning(
self, self.tr('InaSAFE'),
((self.tr(
'An error was encountered when saving the following '
'keywords:\n %s') % error_message.to_html())))
# Update setting fir recent value
if self.metadata.get('inasafe_default_values'):
for key, value in \
list(self.metadata['inasafe_default_values'].items()):
set_inasafe_default_value_qsetting(
self.setting, key, RECENT, value)
def accept(self):
"""Method invoked when OK button is clicked."""
try:
self.save_metadata()
except InvalidValidationException as e:
display_warning_message_box(
self, tr('Invalid Field Mapping'), str(e))
return
super(FieldMappingDialog, self).accept()
class NewProjectDialog(Dialog):
'''
dialog to select a layer and a name as inputs for creating a new project
'''
def setupUi(self):
'''
set up the user interface
'''
self.setMinimumWidth(500)
self.setWindowTitle('Neues Projekt erstellen')
project_manager = ProjectManager()
self.project_names = [p.name for p in project_manager.projects]
layout = QVBoxLayout(self)
label = QLabel('Name des Projekts')
self.name_edit = QLineEdit()
self.name_edit.textChanged.connect(self.validate)
layout.addWidget(label)
layout.addWidget(self.name_edit)
self.path = os.path.join(project_manager.settings.TEMPLATE_PATH,
'projektflaechen')
hlayout = QHBoxLayout(self)
label = QLabel('Import der (Teil-)Flächen des Plangebiets')
self.layer_combo = QgsMapLayerComboBox()
self.layer_combo.setFilters(QgsMapLayerProxyModel.VectorLayer)
self.source = None
self.layer_combo.layerChanged.connect(self.set_layer)
self.layer_combo.layerChanged.connect(self.validate)
browse_button = QPushButton('...')
browse_button.clicked.connect(self.browse_path)
browse_button.setMaximumWidth(30)
hlayout.addWidget(self.layer_combo)
hlayout.addWidget(browse_button)
layout.addWidget(label)
layout.addLayout(hlayout)
self.status_label = QLabel()
layout.addWidget(self.status_label)
spacer = QSpacerItem(
20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
layout.addItem(spacer)
buttons = QDialogButtonBox(
QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
Qt.Horizontal, self)
self.ok_button = buttons.button(QDialogButtonBox.Ok)
self.ok_button.setEnabled(False)
buttons.accepted.connect(self.accept)
buttons.rejected.connect(self.reject)
layout.addWidget(buttons)
if len(self.layer_combo) > 0:
self.set_layer(self.layer_combo.currentLayer())
self.layer_combo.setCurrentIndex(0)
def set_layer(self, layer: QgsVectorLayer = None):
'''
set layer as user selection
Parameters
----------
layer : QgsVectorLayer
the selected layer
'''
if not layer:
path = self.layer_combo.currentText()
layer = QgsVectorLayer(path, 'testlayer_shp', 'ogr')
self.source = layer
self.validate()
def browse_path(self):
'''
open dialog for user input of path to a shapefile and add it to the
layer-combo
'''
path, sf = QFileDialog.getOpenFileName(
self, 'Datei wählen', filter="Shapefile(*.shp)",
directory=self.path)
if path:
self.path = os.path.split(path)[0]
self.layer_combo.setAdditionalItems([str(path)])
self.layer_combo.setCurrentIndex(self.layer_combo.count()-1)
self.set_layer()
def show(self) -> Tuple[bool, str, QgsVectorLayer]:
'''
show dialog and return selections made by user
'''
confirmed = self.exec_()
if confirmed:
return confirmed, self.name_edit.text(), self.source
return False, None, None
def validate(self):
'''
validate current input of name and layer, set the status label according
to validation result
'''
name = str(self.name_edit.text())
status_text = ''
regexp = re.compile('[\\\/\:*?\"\'<>|]')
error = False
if name and regexp.search(name):
status_text = ('Der Projektname darf keines der folgenden Zeichen '
'enthalten: \/:*?"\'<>|')
error = True
elif name in self.project_names:
status_text = (
f'Ein Projekt mit dem Namen {name} existiert bereits!\n'
'Projektnamen müssen einzigartig sein.')
error = True
if self.source:
if not self.source.isValid():
status_text = 'Der Layer ist ungültig.'
error = True
elif not self.source.geometryType() == QgsWkbTypes.PolygonGeometry:
status_text = 'Der Layer hat keine Polygongeometrie.'
error = True
self.status_label.setText(status_text)
if not error and (name and self.source):
self.ok_button.setEnabled(True)
else:
self.ok_button.setEnabled(False)
