[processing] always use only selected features in 'save selected features'

Author: volaya

python/plugins/processing/algs/qgis/SaveSelectedFeatures.py

@@ -28,7 +28,7 @@
 from processing.core.GeoAlgorithm import GeoAlgorithm
 from processing.core.parameters import ParameterVector
 from processing.core.outputs import OutputVector
-from processing.tools import dataobjects, vector
+from processing.tools import dataobjects
 
 
 class SaveSelectedFeatures(GeoAlgorithm):
@@ -55,8 +55,8 @@ def processAlgorithm(self, feedback):
         writer = output.getVectorWriter(vectorLayer.fields(),
                                         vectorLayer.wkbType(), vectorLayer.crs())
 
-        features = vector.features(vectorLayer)
-        total = 100.0 / len(features)
+        features = vectorLayer.selectedFeaturesIterator()
+        total = 100.0 / int(vectorLayer.selectedFeatureCount())
         for current, feat in enumerate(features):
             writer.addFeature(feat)
             feedback.setProgress(int(current * total))