Merge "Add prependLabel() method in ActionContext"

Documentation/js-api.txt

@@ -385,6 +385,10 @@ functions to make working with DOM based widgets less painful.
   and the string `label`. Used to wrap a checkbox with its label,
   `label(checkbox(), 'Click Me')`.
 
+* `prependLabel(label, c)`: a new `<label>` element wrapping element `c`
+  and the string `label`. Used to wrap an input field with its label,
+  `prependLabel('Greeting message', textfield())`.
+
 * `textarea(options)`: new `<textarea>` element. The options
   object may optionally include `rows` and `cols`. The textarea
   comes with an onkeypress handler installed to play nicely with

gerrit-gwtui/src/main/java/com/google/gerrit/client/api/ActionContext.java

@@ -62,6 +62,12 @@ public class ActionContext extends JavaScriptObject {
         e.appendChild(doc.createTextNode(label));
         return e;
       },
+      prependLabel: function(label,c) {
+        var e = doc.createElement('label');
+        e.appendChild(doc.createTextNode(label));
+        e.appendChild(c);
+        return e;
+      },
       span: function() {
         var e = doc.createElement('span');
         for (var i = 0; i < arguments.length; i++)