Parameterize Property and Field with the value type.

The interfaces Property and Field and most of their implementations are
now parameterized with the type of their value. The method getValue()
returns the Property type but setValue() takes Object as its parameter.
No implicit conversions between value type and strings are performed in
most locations (fields).

Among others, AbstractTextField, DateField and RichTextArea not have
specific value types and do not accept arbitrary values.

Most locations requiring migration will be visible as compilation
errors, with the exception of some cases where a non-parameterized
Property or Field (or one parametrized with Object) is used.

Not yet done:
- Label
- converters
- setValue() parameterization (causes much more migration effort)

1 files changed, 6 insertions, 6 deletions

diff --git a/src/com/vaadin/ui/DateField.java b/src/com/vaadin/ui/DateField.java
index b6e3d1e8cb..040a2a4dd4 100644
--- a/src/com/vaadin/ui/DateField.java
+++ b/src/com/vaadin/ui/DateField.java
@@ -48,7 +48,7 @@ import com.vaadin.terminal.gwt.client.ui.VPopupCalendar;
  */
 @SuppressWarnings("serial")
 @ClientWidget(VPopupCalendar.class)
-public class DateField extends AbstractField implements
+public class DateField extends AbstractField<Date> implements
         FieldEvents.BlurNotifier, FieldEvents.FocusNotifier {
 
     /* Private members */
@@ -228,7 +228,7 @@ public class DateField extends AbstractField implements
 
         // Gets the calendar
         final Calendar calendar = getCalendar();
-        final Date currentDate = (Date) getValue();
+        final Date currentDate = getValue();
 
         for (int r = resolution; r <= largestModifiable; r++) {
             switch (r) {
@@ -298,10 +298,10 @@ public class DateField extends AbstractField implements
                         || variables.containsKey("min")
                         || variables.containsKey("sec")
                         || variables.containsKey("msec") || variables
-                        .containsKey("dateString"))) {
+                            .containsKey("dateString"))) {
 
             // Old and new dates
-            final Date oldDate = (Date) getValue();
+            final Date oldDate = getValue();
             Date newDate = null;
 
             // this enables analyzing invalid input on the server
@@ -469,7 +469,7 @@ public class DateField extends AbstractField implements
      * the default documentation from implemented interface.
      */
     @Override
-    public Class<?> getType() {
+    public Class<Date> getType() {
         return Date.class;
     }
 
@@ -642,7 +642,7 @@ public class DateField extends AbstractField implements
         final Calendar newCal = (Calendar) calendar.clone();
 
         // Assigns the current time tom calendar.
-        final Date currentDate = (Date) getValue();
+        final Date currentDate = getValue();
         if (currentDate != null) {
             newCal.setTime(currentDate);
         }