Cleanup model algorithm parameter definition dialog

python/plugins/processing/modeler/ModelerDialog.py

@@ -588,17 +588,17 @@ def _addAlgorithm(self, alg, pos=None):
             pass
         if not dlg:
             dlg = ModelerParametersDialog(alg, self.model)
-        dlg.exec_()
-        if dlg.alg is not None:
+        if dlg.exec_():
+            alg = dlg.createAlgorithm()
             if pos is None:
-                dlg.alg.setPosition(self.getPositionForAlgorithmItem())
+                alg.setPosition(self.getPositionForAlgorithmItem())
             else:
-                dlg.alg.setPosition(pos)
+                alg.setPosition(pos)
             from processing.modeler.ModelerGraphicItem import ModelerGraphicItem
-            for i, out in enumerate(dlg.alg.modelOutputs()):
-                dlg.alg.modelOutput(out).setPosition(dlg.alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, (i + 1.5) *
+            for i, out in enumerate(alg.modelOutputs()):
+                alg.modelOutput(out).setPosition(alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, (i + 1.5) *
                                                                                   ModelerGraphicItem.BOX_HEIGHT))
-            self.model.addChildAlgorithm(dlg.alg)
+            self.model.addChildAlgorithm(alg)
             self.repaintModel()
             self.hasChanged = True
 

python/plugins/processing/modeler/ModelerGraphicItem.py

@@ -210,10 +210,10 @@ def editElement(self):
                 pass
             if not dlg:
                 dlg = ModelerParametersDialog(self.element.algorithm(), self.model, self.element.childId())
-            dlg.exec_()
-            if dlg.alg is not None:
-                dlg.alg.setChildId(self.element.childId())
-                self.updateAlgorithm(dlg.alg)
+            if dlg.exec_():
+                alg = dlg.createAlgorithm()
+                alg.setChildId(self.element.childId())
+                self.updateAlgorithm(alg)
                 self.scene.dialog.repaintModel()
 
     def updateAlgorithm(self, alg):

python/plugins/processing/modeler/ModelerParametersDialog.py

@@ -70,8 +70,6 @@ def __init__(self, alg, model, algName=None):
         self.setModal(True)
         # The algorithm to define in this dialog. It is an instance of GeoAlgorithm
         self._alg = alg
-        # The resulting algorithm after the user clicks on OK. it is an instance of the container Algorithm class
-        self.alg = None
         # The model this algorithm is going to be added to
         self.model = model
         # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
@@ -348,21 +346,20 @@ def createAlgorithm(self):
             dep_ids.append(availableDependencies[selected].childId())  # spellok
         alg.setDependencies(dep_ids)
 
-        try:
-            self._alg.processBeforeAddingToModeler(alg, self.model)
-        except:
-            pass
+        #try:
+        #    self._alg.processBeforeAddingToModeler(alg, self.model)
+        #except:
+        #    pass
 
         return alg
 
     def okPressed(self):
-        self.alg = self.createAlgorithm()
-        if self.alg is not None:
-            self.close()
+        alg = self.createAlgorithm()
+        if alg is not None:
+            self.accept()
 
     def cancelPressed(self):
-        self.alg = None
-        self.close()
+        self.reject()
 
     def openHelp(self):
         algHelp = self._alg.help()