[processing] fix extent selection in batch mode (fix #11878)

Author: alexbruy

python/plugins/processing/gui/BatchPanel.py

@@ -198,9 +198,9 @@ def fillParameterValues(self, column):
             widgetValue = widget.getValue()
             for row in range(1, self.tblParameters.rowCount()):
                 if widgetValue is not None:
-                    self.tblParameters.cellWidget(row, column).text.setText(widgetValue)
+                    self.tblParameters.cellWidget(row, column).setExtentFromString(widgetValue)
                 else:
-                    self.tblParameters.cellWidget(row, column).text.setText('')
+                    self.tblParameters.cellWidget(row, column).setExtentFromString('')
         elif isinstance(widget, CrsSelectionPanel):
             widgetValue = widget.getValue()
             for row in range(1, self.tblParameters.rowCount()):

python/plugins/processing/gui/ExtentSelectionPanel.py

@@ -177,3 +177,6 @@ def getValue(self):
             return unicode(self.leText.text())
         else:
             return self.getMinCoveringExtent()
+
+    def setExtentFromString(self, s):
+        self.leText.setText(s)

python/plugins/processing/gui/ProcessingToolbox.py

@@ -178,6 +178,7 @@ def executeAlgorithmAsBatchProcess(self):
             alg = Processing.getAlgorithm(item.alg.commandLineName())
             alg = alg.getCopy()
             dlg = BatchAlgorithmDialog(alg)
+            dlg.show()
             dlg.exec_()
 
     def executeAlgorithm(self):