processing: fix translation context for AlgorithmDialogBase

Author: jef-n

python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py

@@ -99,11 +99,11 @@ def parametersHaveChanged(self):
             self.parent.setParamValues()
             for output in self.alg.outputs:
                 if output.value is None:
-                    output.value = "[temporary file]"
+                    output.value = self.tr("[temporary file]")
             commands = self.alg.getConsoleCommands()
             commands = [c for c in commands if c not in ['cmd.exe', '/C ']]
             self.text.setPlainText(" ".join(commands))
         except AlgorithmDialogBase.InvalidParameterValue as e:
-            self.text.setPlainText("Invalid value for parameter '%s'" % e.parameter.description)
+            self.text.setPlainText(self.tr("Invalid value for parameter '%s'") % e.parameter.description)
         except:
             self.text.setPlainText("")

python/plugins/processing/gui/AlgorithmDialogBase.py

@@ -45,11 +45,6 @@
 
 class AlgorithmDialogBase(BASE, WIDGET):
 
-    class InvalidParameterValue(Exception):
-
-        def __init__(self, param, widget):
-            (self.parameter, self.widget) = (param, widget)
-
     def __init__(self, alg):
         super(AlgorithmDialogBase, self).__init__(iface.mainWindow())
         self.setupUi(self)
@@ -175,3 +170,8 @@ def accept(self):
 
     def finish(self):
         pass
+
+    class InvalidParameterValue(Exception):
+
+        def __init__(self, param, widget):
+            (self.parameter, self.widget) = (param, widget)