multiEdit: Allow disabling fields per-row

If _hideFields array is passed with row item data, then field IDs
specified will be disabled, if they are custom button actions.

ui/css/cloudstack3.css

@@ -6799,6 +6799,15 @@ div.panel.ui-dialog div.list-view div.fixed-header {
   text-shadow: 0px 1px #FFFFFF;
 }
 
+.multi-edit .disabled .button.custom-action {
+  /*+opacity:50%;*/
+  filter: alpha(opacity=50);
+  -ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=50);
+  -moz-opacity: 0.5;
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
 .multi-edit .button.custom-action:hover {
   background: #808080 url(../images/bg-gradients.png);
   color: #FFFFFF;

ui/scripts/ui/widgets/multiEdit.js

@@ -176,6 +176,8 @@
             $button.html(data && data[fieldName] && data[fieldName]['_buttonLabel'] ?
                          _l(data[fieldName]['_buttonLabel']) : _l(field.custom.buttonLabel));
             $button.click(function() {
+              if ($td.hasClass('disabled')) return false;
+              
               var $button = $(this);
               var context = $.extend(true, {},
                                      options.context ?
@@ -196,6 +198,8 @@
                   }
                 }
               });
+
+              return true;
             });
             $button.appendTo($td);
           }
@@ -210,6 +214,11 @@
         var targetWidth = $multi.find('th.' + fieldName).width() + 5;
         $td.width(targetWidth);
 
+        if (data._hideFields &&
+            $.inArray(fieldName, data._hideFields) > -1) {
+          $td.addClass('disabled');
+        }
+
         return true;
       });