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", "AttributeSplit_{}.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 = AttributeSplitDialog(iface)
# Declare instance attributes
self.actions = []
self.menu = self.tr(u"&Attribute Split")
self.toolbar = self.iface.addToolBar(u"AttributeSplit")
self.toolbar.setObjectName(u"AttributeSplit")
class AttributeSplit:
"""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", "AttributeSplit_{}.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 = AttributeSplitDialog(iface)
# Declare instance attributes
self.actions = []
self.menu = self.tr(u"&Attribute Split")
self.toolbar = self.iface.addToolBar(u"AttributeSplit")
self.toolbar.setObjectName(u"AttributeSplit")
# 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("AttributeSplit", 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/AttributeSplit/icon.png"
self.add_action(icon_path, text=self.tr(u"Attribute split"), 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"&Attribute Split"), action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def run(self):
""" Do the job
"""
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result and len(self.dlg.LayerCombo.currentText()) and len(self.dlg.ColumnCombo.currentText()):
vlayer = util.getMapLayerByName(self.dlg.LayerCombo.currentText())
vprovider = vlayer.dataProvider()
field = self.dlg.ColumnCombo.currentText()
fields = vprovider.fields()
id = fields.indexFromName(field)
# unique values of selected field
uniquevalues = vprovider.uniqueValues(id)
if len(uniquevalues) > 25:
if (
QMessageBox.warning(
None,
QApplication.translate("@default", "Warning"),
str(len(uniquevalues)) + " " + QApplication.translate("@default", " unique values! Continue?"),
QMessageBox.Ok | QMessageBox.Cancel,
QMessageBox.Cancel,
)
== QMessageBox.Cancel
):
return
base = os.path.join(self.dlg.DirectoryEdit.text(), self.dlg.BaseEdit.text())
for uniquevalue in uniquevalues:
# create new shape file for each unique value
writer = QgsVectorFileWriter(
base + str(uniquevalue), vprovider.encoding(), fields, vprovider.geometryType(), vprovider.crs()
)
# set up filter expression
exptext = field + " = '" + str(uniquevalue) + "'"
exp = QgsExpression(exptext)
request = QgsFeatureRequest(exp)
# pyqtRemoveInputHook()
# pdb.set_trace()
for feature in vlayer.getFeatures(request):
writer.addFeature(feature)
# flush and close
del writer
