java将ActionCell添加到GWT数据网格

Question

我正在尝试将actioncell添加到GWT数据网格，但在这样做时遇到了问题。我查看了GWT showcase，发现了一个将actioncell添加到celltable的示例，如下所示

// ActionCell.
    addColumn(new ActionCell<ContactInfo>(
        "Click Me", new ActionCell.Delegate<ContactInfo>() {
          public void execute(ContactInfo contact) {
            Window.alert("You clicked " + contact.getFullName());
          }
        }), "Action", new GetValue<ContactInfo>() {
      public ContactInfo getValue(ContactInfo contact) {
        return contact;
      }
    }, null);

这是我的尝试，但我不知道这在句法上应该是什么样子，它是如何工作的

Column<OpInventory, ActionCell<OpInventory>> checkColumn = new Column<OpInventory,
//I get an error on instantiating the Delegate
ActionCell<OpInventory>>(new ActionCell("x", new ActionCell.Delegate<OpInventory>())) {
            //this is wrong here
        @Override
        public ActionCell getValue(OpInventory object) {
            // TODO Auto-generated method stub
            return null;
        }

        };
    table.addColumn(checkColumn, SafeHtmlUtils.fromSafeConstant("<br/>"));
    table.setColumnWidth(checkColumn, 40, Unit.PX);

Answer 1

找出语法，在这里发布给其他人

@SuppressWarnings({ "unchecked", "rawtypes" })
        Column<OpInventory, ActionCell> actionCellColumn = new Column<OpInventory, ActionCell>(new ActionCell("See Lots", new ActionCell.Delegate<OpInventory>() {

            @Override
            public void execute(OpInventory object) {
                // TODO Auto-generated method stub

            }
        })){

            @Override
            public ActionCell getValue(OpInventory object) {
                // TODO Auto-generated method stub
                return null;
            }

        };
        table.addColumn(actionCellColumn, "See Lot Numbers");
        table.setColumnWidth(actionCellColumn, 40, Unit.PX);