python/plugins/sextante/gui/BatchProcessingDialog.py

@@ -149,7 +149,7 @@ def accept(self):
                     continue
                 widget = self.table.cellWidget(row, col)
                 if not self.setParameterValueFromWidget(param, widget, alg):
-                    QMessageBox.critical(self.dialog, "Unable to execute batch process", "Wrong or missing parameter values")
+                    QMessageBox.critical(self, "Unable to execute batch process", "Wrong or missing parameter values")
                     self.algs = None
                     return
                 col+=1

python/plugins/sextante/saga/SagaAlgorithm.py

@@ -47,9 +47,7 @@
 from sextante.parameters.ParameterNumber import ParameterNumber
 from sextante.parameters.ParameterSelection import ParameterSelection
 from sextante.core.LayerExporter import LayerExporter
-import subprocess
 from sextante.parameters.ParameterExtent import ParameterExtent
-from PyQt4 import QtGui
 from sextante.parameters.ParameterFixedTable import ParameterFixedTable
 from sextante.core.SextanteLog import SextanteLog
 
@@ -367,6 +365,17 @@ def exportRasterLayer(self, layer):
 
     def checkBeforeOpeningParametersDialog(self):
         return SagaUtils.checkSagaIsInstalled()
+
+
+    def checkParameterValuesBeforeExecuting(self):
+        '''We check that there are no multiband layers, which are not supported by SAGA'''
+        for param in self.parameters:
+            if isinstance(param, ParameterRaster):                
+                value = param.value
+                layer = QGisLayers.getObjectFromUri(value)
+                if layer is not None and layer.bandCount() > 1:
+                        return ("Input layer " + str(layer.name()) + " has more than one band.\n"
+                                + "Multiband layers are not supported by SAGA")
 
 
     def helpFile(self):

python/plugins/sextante/saga/SplitRGBBands.py

@@ -53,7 +53,12 @@ def defineCharacteristics(self):
     def processAlgorithm(self, progress):
         #TODO:check correct num of bands
         input = self.getParameterValue(SplitRGBBands.INPUT)
-        temp = SextanteUtils.getTempFilename();
+        temp = SextanteUtils.getTempFilename(None).replace('.','');
+        basename = os.path.basename(temp)
+        validChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+        safeBasename = ''.join(c for c in basename if c in validChars)
+        temp = os.path.join(os.path.dirname(temp), safeBasename)
+
         r = self.getOutputValue(SplitRGBBands.R)
         g = self.getOutputValue(SplitRGBBands.G)
         b = self.getOutputValue(SplitRGBBands.B)