JavaFX TextArea中的Tab键导航 [英] Tab key navigation in JavaFX TextArea

问题描述

如何在TextArea中按Tab键导航到下一个控件？

How do I make hitting the Tab Key in TextArea navigates to the next control ?

我可以为cath de key按下事件添加一个监听器，但我该怎么做make te TextArea控件失去焦点（不知道要聚焦的链中的下一个字段）？

I could add a listener to cath de key pressed event, but how do I make te TextArea control to lose it focus (without knowing the next field in the chain to be focused) ?

@FXML protected void handleTabKeyTextArea(KeyEvent event) {
    if (event.getCode() == KeyCode.TAB) {
        ...
    }
}

推荐答案

如果按TAB键，此代码遍历焦点，如果按CONTROL + TAB

This code traverse focus if pressing TAB and insert tab if pressing CONTROL+TAB

textArea.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
        @Override
        public void handle(KeyEvent event) {
            if (event.getCode() == KeyCode.TAB) {
                SkinBase skin = (SkinBase) textArea.getSkin();
                if (skin.getBehavior() instanceof TextAreaBehavior) {
                    TextAreaBehavior behavior = (TextAreaBehavior) skin.getBehavior();
                    if (event.isControlDown()) {
                        behavior.callAction("InsertTab");
                    } else {
                        behavior.callAction("TraverseNext");
                    }
                    event.consume();
                }

            }
        }
    });

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