--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/DoubleArrayPanel.java	Wed Mar 16 15:52:13 2011 +0000
@@ -0,0 +1,159 @@
+package de.intevation.flys.client.client.ui;
+
+import java.util.Map;
+
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.i18n.client.NumberFormat;
+
+import com.smartgwt.client.types.TitleOrientation;
+import com.smartgwt.client.widgets.form.DynamicForm;
+import com.smartgwt.client.widgets.form.fields.FormItem;
+import com.smartgwt.client.widgets.form.fields.StaticTextItem;
+import com.smartgwt.client.widgets.form.fields.TextItem;
+import com.smartgwt.client.widgets.form.fields.events.BlurHandler;
+
+import de.intevation.flys.client.client.FLYSMessages;
+
+public class DoubleArrayPanel
+extends      DynamicForm
+{
+    /** The message class that provides i18n strings.*/
+    protected FLYSMessages MESSAGES = GWT.create(FLYSMessages.class);
+
+
+    /** The constant input field name.*/
+    public static final String FIELD_NAME = "doublearray";
+
+
+    /**
+     * Creates a new form with a single input field that displays an array of
+     * double values.
+     *
+     * @param name The name of the TextItem.
+     * @param title The title of the TextItem.
+     * @param values The double values that should be displayed initially.
+     * @param handler The BlurHandler that is used to valide the input.
+     */
+    public DoubleArrayPanel(
+        String title,
+        double[] values,
+        BlurHandler handler)
+    {
+        TextItem ti        = new TextItem(FIELD_NAME);
+        StaticTextItem sti = new StaticTextItem("staticarray");
+
+        ti.setShowTitle(false);
+        sti.setShowTitle(false);
+        sti.setValue(title);
+
+        ti.addBlurHandler(handler);
+
+        setFields(ti, sti);
+        setTitleOrientation(TitleOrientation.RIGHT);
+        setNumCols(2);
+
+        if (values == null) {
+            return;
+        }
+
+        NumberFormat f = NumberFormat.getDecimalFormat();
+
+        StringBuilder text = new StringBuilder();
+        boolean firstItem  = true;
+
+        for (double val: values) {
+            if (!firstItem) {
+                text.append(" ");
+            }
+
+            text.append(f.format(val));
+
+            firstItem = false;
+        }
+
+        ti.setValue(text.toString());
+    }
+
+
+    /**
+     * This method validates the entered text in the location input field. If
+     * there are values that doesn't represent a valid location, an error is
+     * displayed.
+     *
+     * @param item The FormItem.
+     */
+    protected boolean validateForm(FormItem item) {
+        boolean  valid = true;
+        String   value = (String) item.getValue();
+
+        if (value == null) {
+            return valid;
+        }
+
+        String[] parts = value.split(" ");
+
+        if (parts == null) {
+            return valid;
+        }
+
+        NumberFormat f = NumberFormat.getDecimalFormat();
+        Map errors     = getErrors();
+
+        try {
+            for (String part: parts) {
+                double location = f.parse(part);
+            }
+
+            errors.remove(item.getFieldName());
+        }
+        catch (NumberFormatException nfe) {
+            errors.put(item.getFieldName(), MESSAGES.wrongFormat());
+
+            valid = false;
+        }
+
+        setErrors(errors, true);
+
+        return valid;
+    }
+
+
+    /**
+     * This method returns the double array that has been entered in
+     * <i>item</i>.
+     *
+     * @param item The item that contains the desired values.
+     *
+     * @return the values as double array.
+     */
+    public double[] getInputValues(FormItem item) {
+        String value = (String) item.getValue();
+
+        if (value == null) {
+            return null;
+        }
+
+        String[] parts  = value.split(" ");
+
+        if (parts == null) {
+            return null;
+        }
+
+        double[] values = new double[parts.length];
+
+        NumberFormat f = NumberFormat.getDecimalFormat();
+
+        int i = 0;
+        for (String part: parts) {
+            try {
+                values[i++] = f.parse(part);
+            }
+            catch (NumberFormatException nfe) {
+                // do nothing
+            }
+        }
+
+        return values;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :