我想使用空格键热键来展开/折叠节点。它非常适合输入,它不适用于空间(只需选择/取消选择节点)。这是我的代码:
final Action actionEnter = new ShortcutAction("Select node",
ShortcutAction.KeyCode.ENTER, null);
final Action actionSpace = new ShortcutAction("Select node1",
ShortcutAction.KeyCode.SPACEBAR, null);
treePanel.addActionHandler(new Action.Handler() {
@Override
public void handleAction(Action action, Object sender, Object target) {
if (action==actionEnter || action==actionSpace){
Object curId = tree.getValue();
expandCollapse(curId);
}
}
@Override
public Action[] getActions(Object target, Object sender) {
return new Action[] { actionEnter, actionSpace };
}
});
太空热键有什么问题?
答案 0 :(得分:0)
向树中添加KeyListener
,然后您就可以处理所有事件。