GWT：如何获取cellTable的复选框的值 [英] GWT:how to get the value of a checkbox of a cellTable

问题描述

我有这种情况下，我想删除这个celltable中的复选框是检查这个删除按钮clik上的对象，

任何想法如何获得这些对象的复选框在这个cellTable中检查，当我点击delte按钮时。

谢谢

解决方案

如果你的要求与删除单行，那么你可以使用SingleSelectionModel否则MulitiSelectionModel celltable中。我已经用单选模型编写了一些代码，它可能会提供一些想法。即

  selectionModel = new SingleSelectionModel< T>（）; 
 cellTable.setSelectionModel（selectionModel）//设置到你的cellTable中：
  

当你选择复选框，然后行将自动选择，对象将设置为选择模型。

  CheckboxCell checkboxCell = new CheckboxCell（true，false） ; 
 Column< T，Boolean> boolColumn = new Column< T，Boolean>（
 checkboxCell）{
 @Override 
 public Boolean getValue（T object）{
 return selectionModel.isSelected（object）; 
} 
}; 
  

点击删除按钮，使用选中的对象，它会为您提供一个删除对象。
selectionModel.getSelectedObject（）;

I have this situation , i want to delete the objects in this celltable whose checkbox is Check on the clik of this "Delete" Button ,

Any idea how to get those objects whose checkbox is checked in this cellTable, when i click the delte button ..

Thanks

解决方案

If your requirement with delete single row, then You can use SingleSelectionModel otherwise MulitiSelectionModel in celltable. I have written some code with single selection model,It may give some idea. i.e.

selectionModel = new SingleSelectionModel<T>();
cellTable.setSelectionModel(selectionModel) //Set into your cellTable:

When you select a checkbox, then row will auto selected and object will set in to selection model.

  CheckboxCell checkboxCell=new CheckboxCell(true, false); 
            Column<T, Boolean> boolColumn=new Column<T, Boolean>(
                        checkboxCell) {
            @Override
            public Boolean getValue(T object) {                            
             return selectionModel.isSelected(object); 
        }
        };

On delete button click,use selected object,It will provide you a object for delete. selectionModel.getSelectedObject();

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