java - Vaadin 中的 ENTER 快捷方式和 TextArea

Question

TextField f = new TextField();
Button b = new Button("Save");
b.setClickShortcut(KeyCode.ENTER); // For quick saving from text field itself

TextArea longText = new TextArea(); // "Enter" is garbled here

使快捷方式仅在来自文本字段中有效吗？

Answer 1

使用 focus 和 blur listeners 移除和添加快捷键：

    f.addFocusListener(new FocusListener() {
        @Override
        public void focus(FocusEvent event) {
            b.setClickShortcut(KeyCode.ENTER);
        }
    });
    f.addBlurListener(new BlurListener() {
        @Override
        public void blur(BlurEvent event) {
            b.removeClickShortcut();
        }
    });

Answer 2

较新版本的 Vaadin 需要以下代码，因为 addListener() 现在已弃用。

    f.addFocusListener(new FocusListener() {

        private static final long serialVersionUID = -6733373447805994139L;

        @Override
        public void focus(FocusEvent event) {
            b.setClickShortcut(KeyCode.ENTER);
        }
    });

    f.addBlurListener(new BlurListener() {

        private static final long serialVersionUID = -3673311830300629513L;

        @Override
        public void blur(BlurEvent event) {
            b.removeClickShortcut();
        }
    });

Answer 3

谈到 Vaadin 14，我一直在寻找答案，对我来说，这很好用

  Button search = new Button("Search");
  search.addClickShortcut(Key.ENTER);