Set whether to allow select multiple nodes.
Default: true
true mean: you can select multiple nodes.
false mean: you can only select one node.
1. Press Ctrl-key or Cmd-key, you can select multiple nodes.
2、This attribute don't affect the feature of cancel select node. ( please see setting.view.autoCancelSelected )
var setting = {
view: {
selectedMulti: false
}
};
......