class CBSmapperDialogTest(unittest.TestCase):
"""Test dialog works."""
def setUp(self):
"""Runs before each test."""
self.dialog = CBSmapperDialog(None)
def tearDown(self):
"""Runs after each test."""
self.dialog = None
def test_dialog_ok(self):
"""Test we can click OK."""
button = self.dialog.button_box.button(QDialogButtonBox.Ok)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Accepted)
def test_dialog_cancel(self):
"""Test we can click cancel."""
button = self.dialog.button_box.button(QDialogButtonBox.Cancel)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Rejected)
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'CBSmapper_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = CBSmapperDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&CBS Mapper')
self.toolbar = self.iface.addToolBar(u'CBSmapper')
self.toolbar.setObjectName(u'CBSmapper')
#clearing the export line
self.dlg.export_line.clear()
#Connecting several push buttons with functions
self.dlg.pushButton_addWFS_gemeenten.clicked.connect(self.add_WFS_gemeenten)
self.dlg.pushButton_addWFS_buurten.clicked.connect(self.add_WFS_buurten)
self.dlg.pushButton_refresh.clicked.connect(self.refresh_layers)
self.dlg.pushButton_showSelect.clicked.connect(self.selectfeatures)
self.dlg.pushButton_browseGjsonSelect.clicked.connect(self.select_output_file_gjson)
self.dlg.pushButton_exportGjsonSelect.clicked.connect(self.write_gjson)
class CBSmapper:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'CBSmapper_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = CBSmapperDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&CBS Mapper')
self.toolbar = self.iface.addToolBar(u'CBSmapper')
self.toolbar.setObjectName(u'CBSmapper')
#clearing the export line
self.dlg.export_line.clear()
#Connecting several push buttons with functions
self.dlg.pushButton_addWFS_gemeenten.clicked.connect(self.add_WFS_gemeenten)
self.dlg.pushButton_addWFS_buurten.clicked.connect(self.add_WFS_buurten)
self.dlg.pushButton_refresh.clicked.connect(self.refresh_layers)
self.dlg.pushButton_showSelect.clicked.connect(self.selectfeatures)
self.dlg.pushButton_browseGjsonSelect.clicked.connect(self.select_output_file_gjson)
self.dlg.pushButton_exportGjsonSelect.clicked.connect(self.write_gjson)
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('CBSmapper', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/plugins/CBSmapper/icon.png'
self.add_action(
icon_path,
text=self.tr(u'The Mapper'),
callback=self.run,
parent=self.iface.mainWindow())
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&CBS Mapper'),
action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def add_WFS_gemeenten(self):
"""Add gemeenten WFS layer to QGIS map canvas."""
# Load the wfs
url = "http://geodata.nationaalgeoregister.nl/wijkenbuurten2014/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=wijkenenbuurten2014:gemeenten2014&SRSNAME=EPSG:28992"
self.iface.addVectorLayer(url, "gemeenten2014", "WFS")
self.refresh_layers()
def add_WFS_buurten(self):
"""Add buurten WFS layer to QGIS map canvas."""
# Load the wfs
#url = "https://geodata.nationaalgeoregister.nl/wijkenbuurten2014/wfs?version=1.0.0&request=getcapabilitieswijkenbuurten2014:cbs_buurten_2014"
url = "https://geodata.nationaalgeoregister.nl/wijkenbuurten2014/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=wijkenbuurten2014:cbs_buurten_2014&SRSNAME=EPSG:28992&BBOX=0,300000,300000,600000"
self.iface.addVectorLayer(url, "buurten2014", "WFS")
self.refresh_layers()
def refresh_layers(self):
"""Refresh layers and field names so that they are recognized in the plugin"""
# select layer
layer = self.iface.activeLayer()
# Get layers that are loaded in QGIS.
layers = self.iface.legendInterface().layers()
# create a list with layer names
layer_list = []
for layer in layers:
layer_list.append(layer.name())
# Clear the old layer names in the combobox
self.dlg.comboBox_addLayer.clear()
# Add the new layer names to the combobox
self.dlg.comboBox_addLayer.addItems(layer_list)
# Get the active layer in QGIS
activelayer = self.iface.activeLayer()
# Get the fieldnames of the layer
fields = activelayer.pendingFields()
field_names = []
field_names = [field.name() for field in fields]
# Clear the old fieldnames in the combobox
self.dlg.comboBox_selectAtt.clear()
# Add the new field names to the combobox
self.dlg.comboBox_selectAtt.addItems(field_names)
def selectquery(self, query):
"""Selecting the query."""
layer = self.iface.activeLayer()
query_str = str(query)
#Create a Expression
expr = QgsExpression(query_str)
selected = layer.getFeatures(QgsFeatureRequest(expr))
#Build a list of feature Ids from the result
ids = []
for i in selected:
ids.append(i.id())
#Select features with the ids
layer.setSelectedFeatures( ids )
def selectfeatures(self):
"""Selecting the features."""
# get fieldname
attribute = self.dlg.comboBox_selectAtt
fieldname = str(attribute.currentText())
# get query
query_line = self.dlg.query_line
query = str(query_line.toPlainText())
combined_query = "%s %s" % (fieldname, query)
#print combined_query
self.selectquery(combined_query)
def select_output_file_gjson(self):
"""Selects the output GeoJSON file from QGIS GUI."""
filename = QFileDialog.getSaveFileName(self.dlg, "Select output file ","", '*.gjson')
self.dlg.export_line.setText(filename)
def write_gjson(self):
"""Writes the output GeoJSON file from QGIS GUI."""
# getting the selected layer
layer = self.iface.activeLayer()
# getting the path from the path line
JSONpath = self.dlg.export_line.text()
# write layer selection to geojson with location of choice (export line)
QgsVectorFileWriter.writeAsVectorFormat(layer, JSONpath, "utf-8", None, "GeoJSON", onlySelected=True)
def run(self):
"""Run method that shows the dialog"""
self.dlg.show()
def setUp(self):
"""Runs before each test."""
self.dialog = CBSmapperDialog(None)
