def polygonLayersToCombo(self):
"""Populate the combo with all polygon layers loaded in QGIS."""
myRegistry = QgsMapLayerRegistry.instance()
myLayers = myRegistry.mapLayers().values()
myFoundFlag = False
for myLayer in myLayers:
myName = myLayer.name()
mySource = str(myLayer.id())
#check if layer is a vector polygon layer
if isPolygonLayer(myLayer) or isPointLayer(myLayer):
myFoundFlag = True
addComboItemInOrder(self.cboPolygonLayers, myName, mySource)
if myFoundFlag:
self.cboPolygonLayers.setCurrentIndex(0)
def polygonLayersToCombo(self):
"""Populate the combo with all polygon layers loaded in QGIS."""
myRegistry = QgsMapLayerRegistry.instance()
myLayers = myRegistry.mapLayers().values()
myFoundFlag = False
for myLayer in myLayers:
myName = myLayer.name()
mySource = str(myLayer.id())
#check if layer is a vector polygon layer
if isPolygonLayer(myLayer) or isPointLayer(myLayer):
myFoundFlag = True
addComboItemInOrder(self.cboPolygonLayers, myName, mySource)
if myFoundFlag:
self.cboPolygonLayers.setCurrentIndex(0)
def on_cboPolygonLayers_currentIndexChanged(self, theIndex=None):
"""Automatic slot executed when the layer is changed to update fields.
Args:
theIndex: int - passed by the signal that triggers this slot.
Returns:
None.
Raises:
no exceptions explicitly raised."""
myLayerId = self.cboPolygonLayers.itemData(theIndex, QtCore.Qt.UserRole).toString()
myLayer = QgsMapLayerRegistry.instance().mapLayer(myLayerId)
myFields = myLayer.dataProvider().fieldNameMap().keys()
self.cboFields.clear()
for myField in myFields:
addComboItemInOrder(self.cboFields, myField, myField)
def on_cboPolygonLayers_currentIndexChanged(self, theIndex=None):
"""Automatic slot executed when the layer is changed to update fields.
Args:
theIndex: int - passed by the signal that triggers this slot.
Returns:
None.
Raises:
no exceptions explicitly raised."""
myLayerId = self.cboPolygonLayers.itemData(
theIndex, QtCore.Qt.UserRole).toString()
myLayer = QgsMapLayerRegistry.instance().mapLayer(myLayerId)
myFields = myLayer.dataProvider().fieldNameMap().keys()
self.cboFields.clear()
for myField in myFields:
addComboItemInOrder(self.cboFields, myField, myField)