--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/LocationDistancePanel.java	Thu Jun 09 10:57:42 2011 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/LocationDistancePanel.java	Thu Jun 09 14:06:10 2011 +0000
@@ -1,10 +1,12 @@
 package de.intevation.flys.client.client.ui;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.LinkedHashMap;
 import java.util.List;
 
 import com.google.gwt.core.client.GWT;
+import com.google.gwt.i18n.client.NumberFormat;
 import com.google.gwt.user.client.rpc.AsyncCallback;
 
 import com.smartgwt.client.widgets.Canvas;
@@ -538,6 +540,97 @@
     }
 
 
+    @Override
+    public List<String> validate() {
+        if (isLocationMode()) {
+            return validateLocations();
+        }
+        else {
+            return validateRange();
+        }
+    }
+
+
+    protected List<String> validateLocations() {
+        List<String> errors = new ArrayList<String>();
+        NumberFormat nf     = NumberFormat.getDecimalFormat();
+
+        try {
+            saveLocationValues(locationPanel);
+        }
+        catch (Exception e) {
+            errors.add(MESSAGES.wrongFormat());
+        }
+
+        double[] values = getLocationValues();
+        double[] good   = new double[values.length];
+        int      idx    = 0;
+
+        for (double value: values) {
+            if (value < min || value > max) {
+                String tmp = MESSAGES.error_validate_range();
+                tmp = tmp.replace("$1", nf.format(value));
+                tmp = tmp.replace("$2", nf.format(min));
+                tmp = tmp.replace("$3", nf.format(max));
+                errors.add(tmp);
+            }
+            else {
+                good[idx++] = value;
+            }
+        }
+
+        double[] justGood = new double[idx];
+        for (int i = 0; i < justGood.length; i++) {
+            justGood[i] = good[i];
+        }
+
+        if (!errors.isEmpty()) {
+            locationPanel.setValues(justGood);
+        }
+
+        return errors;
+    }
+
+
+    protected List<String> validateRange() {
+        List<String> errors = new ArrayList<String>();
+        NumberFormat nf     = NumberFormat.getDecimalFormat();
+
+        try {
+            saveDistanceValues(distancePanel);
+        }
+        catch (Exception e) {
+            errors.add(MESSAGES.wrongFormat());
+        }
+
+        double from = getFrom();
+        double to   = getTo();
+        double step = getStep();
+
+        if (from < min || from > max) {
+            String tmp = MESSAGES.error_validate_lower_range();
+            tmp = tmp.replace("$1", nf.format(from));
+            tmp = tmp.replace("$2", nf.format(min));
+            errors.add(tmp);
+            from = min;
+        }
+
+        if (to < min || to > max) {
+            String tmp = MESSAGES.error_validate_upper_range();
+            tmp = tmp.replace("$1", nf.format(to));
+            tmp = tmp.replace("$2", nf.format(max));
+            errors.add(tmp);
+            to = max;
+        }
+
+        if (!errors.isEmpty()) {
+            distancePanel.setValues(from, to, step);
+        }
+
+        return errors;
+    }
+
+
     /**
      * This method returns the selected data.
      *