[processing] Remove more UseSelectionIfPresent use

Author: nyalldawson

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

@@ -81,7 +81,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, valuefieldname)
+        values = vector.values(layer, valuefieldname)
 
         x_var = [i[namefieldname] for i in layer.getFeatures()]
 

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

@@ -90,7 +90,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, valuefieldname)
+        values = vector.values(layer, valuefieldname)
 
         x_var = [i[namefieldname] for i in layer.getFeatures()]
 

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

@@ -79,7 +79,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, namefieldname, valuefieldname)
+        values = vector.values(layer, namefieldname, valuefieldname)
 
         d = {}
         for i in range(len(values[namefieldname])):

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

@@ -78,7 +78,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, valuefieldname)
+        values = vector.values(layer, valuefieldname)
 
         data = [go.Area(r=values[valuefieldname],
                         t=np.degrees(np.arange(0.0, 2 * np.pi, 2 * np.pi / len(values[valuefieldname]))))]

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

@@ -79,7 +79,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, fieldname)
+        values = vector.values(layer, fieldname)
 
         data = [go.Histogram(x=values[fieldname],
                              nbinsx=bins)]

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

@@ -82,7 +82,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, xfieldname, yfieldname)
+        values = vector.values(layer, xfieldname, yfieldname)
         data = [go.Scatter(x=values[xfieldname],
                            y=values[yfieldname],
                            mode='markers')]

python/plugins/processing/algs/qgis/VectorLayerScatterplot3D.py

@@ -89,7 +89,7 @@ def processAlgorithm(self, parameters, context, feedback):
 
         output = self.getOutputValue(self.OUTPUT)
 
-        values = vector.values(layer, context, xfieldname, yfieldname, zfieldname)
+        values = vector.values(layer, xfieldname, yfieldname, zfieldname)
 
         data = [go.Scatter3d(
                 x=values[xfieldname],

python/plugins/processing/tests/ToolsTest.py

@@ -53,43 +53,32 @@ def tearDownClass(cls):
             shutil.rmtree(path)
 
     def testValues(self):
-        context = QgsProcessingContext()
-
-        # disable check for geometry validity
-        context.setFlags(QgsProcessingContext.Flags(0))
-
         test_data = points()
         test_layer = QgsVectorLayer(test_data, 'test', 'ogr')
 
         # field by index
-        res = vector.values(test_layer, context, 1)
+        res = vector.values(test_layer, 1)
         self.assertEqual(res[1], [1, 2, 3, 4, 5, 6, 7, 8, 9])
 
         # field by name
-        res = vector.values(test_layer, context, 'id')
+        res = vector.values(test_layer, 'id')
         self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8, 9])
 
         # two fields
-        res = vector.values(test_layer, context, 1, 2)
+        res = vector.values(test_layer, 1, 2)
         self.assertEqual(res[1], [1, 2, 3, 4, 5, 6, 7, 8, 9])
         self.assertEqual(res[2], [2, 1, 0, 2, 1, 0, 0, 0, 0])
 
         # two fields by name
-        res = vector.values(test_layer, context, 'id', 'id2')
+        res = vector.values(test_layer, 'id', 'id2')
         self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8, 9])
         self.assertEqual(res['id2'], [2, 1, 0, 2, 1, 0, 0, 0, 0])
 
         # two fields by name and index
-        res = vector.values(test_layer, context, 'id', 2)
+        res = vector.values(test_layer, 'id', 2)
         self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8, 9])
         self.assertEqual(res[2], [2, 1, 0, 2, 1, 0, 0, 0, 0])
 
-        # test with selected features
-        context.setFlags(QgsProcessingContext.UseSelectionIfPresent)
-        test_layer.selectByIds([2, 4, 6])
-        res = vector.values(test_layer, context, 1)
-        self.assertEqual(set(res[1]), set([5, 7, 3]))
-
     def testOgrLayerNameExtraction(self):
         outdir = tempfile.mkdtemp()
         self.cleanup_paths.append(outdir)

python/plugins/processing/tools/dataobjects.py

@@ -74,10 +74,6 @@ def createContext():
     context = QgsProcessingContext()
     context.setProject(QgsProject.instance())
 
-    use_selection = ProcessingConfig.getSetting(ProcessingConfig.USE_SELECTED)
-    if use_selection:
-        context.setFlags(QgsProcessingContext.UseSelectionIfPresent)
-
     invalid_features_method = ProcessingConfig.getSetting(ProcessingConfig.FILTER_INVALID_GEOMETRIES)
     if invalid_features_method is None:
         invalid_features_method = QgsFeatureRequest.GeometryAbortOnInvalid

python/plugins/processing/tools/vector.py

@@ -78,8 +78,8 @@ def resolveFieldIndex(layer, attr):
         return index
 
 
-def values(layer, context, *attributes):
-    """Returns the values in the attributes table of a vector layer,
+def values(source, *attributes):
+    """Returns the values in the attributes table of a feature source,
     for the passed fields.
 
     Field can be passed as field names or as zero-based field indices.
@@ -88,7 +88,6 @@ def values(layer, context, *attributes):
 
     It assummes fields are numeric or contain values that can be parsed
     to a number.
-    :param context:
     """
     ret = {}
     indices = []
@@ -101,7 +100,7 @@ def values(layer, context, *attributes):
     # use an optimised feature request
     request = QgsFeatureRequest().setSubsetOfAttributes(indices).setFlags(QgsFeatureRequest.NoGeometry)
 
-    for feature in QgsProcessingUtils.getFeatures(layer, context, request):
+    for feature in source.getFeatures(request):
         for i in indices:
 
             # convert attribute value to number