GWT 单元树,选择太多选项!
我正在使用 gwt 单元树,我只想在整个树中选择一个节点,但正在选择许多节点。
我也在尝试这个
S1= new SelectionModel();......
S1.setSelected(S1.getSelected(),false); but using this technique nothing is being selected.
,但遇到以下问题:
有人可以帮忙吗?
I am using a gwt cell tree and I want only one node to be selected in the whole tree but many nodes are being selected.
I am also trying this
S1= new SelectionModel();......
S1.setSelected(S1.getSelected(),false); but using this technique nothing is being selected.
I am having the following problem:
Can someone help??
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也许 SingleSelectionModel 可以帮助你;
请参阅 Google 示例 2
到 SingleSelectionModel 用法。
Maybe SingleSelectionModel helps you;
See Google Example 2
to SingleSelectionModel usage.
代码对我来说看起来很奇怪,因为您首先使用
S1.getSelected()
命令获取选定的对象,然后有点重新选择相同的对象,所以毫无疑问什么也没有发生。相反,S1.getSelected()
传递您要选择的对象。Code looks weird to me, because you firstly get selected object with
S1.getSelected()
command and then kinda re-select same object, so no wonder that nothing happens. InsteadS1.getSelected()
pass object that you want to select.您需要为选择模型提供一个密钥提供程序,如下所示,
这将唯一标识树中的节点。
You need to provide a key provider to the selection model like this
This will uniquely identify the nodes in the tree.