"""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