[processing] Add ui option useCheckBoxes in ByLocation algorithms

arnaud-morvan · nyalldawson · commit b08119bc965b · 2017-09-16T09:58:35.000+10:00
diff --git a/python/plugins/processing/algs/qgis/SpatialJoin.py b/python/plugins/processing/algs/qgis/SpatialJoin.py
@@ -96,10 +96,17 @@ def initAlgorithm(self, config=None):
         self.addParameter(QgsProcessingParameterFeatureSource(self.JOIN,
                                                               self.tr('Join layer'),
                                                               [QgsProcessing.TypeVectorAnyGeometry]))
-        self.addParameter(QgsProcessingParameterEnum(self.PREDICATE,
-                                                     self.tr('Geometric predicate'),
-                                                     options=[p[1] for p in self.predicates],
-                                                     allowMultiple=True, defaultValue=[0]))
+
+        predicate = QgsProcessingParameterEnum(self.PREDICATE,
+                                               self.tr('Geometric predicate'),
+                                               options=[p[1] for p in self.predicates],
+                                               allowMultiple=True, defaultValue=[0])
+        predicate.setMetadata({
+            'widget_wrapper': {
+                'class': 'processing.gui.wrappers.SelectionWidgetWrapper',
+                'useCheckBoxes': True,
+                'columns': 2}})
+        self.addParameter(predicate)
         self.addParameter(QgsProcessingParameterField(self.JOIN_FIELDS,
                                                       self.tr('Fields to add (leave empty to use all fields)'),
                                                       parentLayerParameterName=self.JOIN,
