Vaadin 如何通过 AbstractField.FocusShortcut 中的 shorthand 符号使用快捷方式将 &Address 转换为 Alt+A？
How Vaadin translates &Address to Alt+A using shortcut by a shorthand notation in AbstractField.FocusShortcut?
正在阅读 Vaadin 之书的这一页：
https://vaadin.com/book/vaadin7/-/page/advanced.shortcuts.html
You can also specify the shortcut by a shorthand notation, where the
shortcut key is indicated with an ampersand (&).
// A field with Alt+A bound to it, using shorthand notation
TextField address = new TextField("Address (Alt+A)");
address.addShortcutListener(
new AbstractField.FocusShortcut(address, "&Address"));
This is especially useful for internationalization, so that you can
determine the shortcut key from the localized string.
如果我将此 address 文本字段对象添加到我的布局中，然后我按 Alt+A，该字段将获得焦点。
但是 Vaadin 怎么知道“&Address”是 ALT+A？？？它是在内部解析字符串还是将其与某些内容进行比较？
键盘快捷键的“&Address”shorthand notation 是什么？还有其他 shorthand 符号吗？
来自ShortcutAction javadocs:
Insert one or more modifier characters before the character to use as
keycode. E.g "&Save" will make a shortcut responding to ALT-S, "E^xit"
will respond to CTRL-X. Multiple modifiers can be used, e.g "&^Delete"
will respond to CTRL-ALT-D (the order of the modifier characters is
not important).
The modifier characters will be removed from the caption. The modifier
character is be escaped by itself: two consecutive characters are
turned into the original character w/o the special meaning. E.g
"Save&&&close" will respond to ALT-C, and the caption will say
"Save&close".
共有三个修饰字符：^ (ctrl)、& (alt) 和 _ (shift)。在内部，Vaadin 使用正则表达式解析 shorthand 标题，匹配修饰符字符并构建键盘快捷键。可以看看代码here.
正在阅读 Vaadin 之书的这一页：
https://vaadin.com/book/vaadin7/-/page/advanced.shortcuts.html
You can also specify the shortcut by a shorthand notation, where the shortcut key is indicated with an ampersand (&).
// A field with Alt+A bound to it, using shorthand notation
TextField address = new TextField("Address (Alt+A)");
address.addShortcutListener(
new AbstractField.FocusShortcut(address, "&Address"));
This is especially useful for internationalization, so that you can determine the shortcut key from the localized string.
如果我将此 address 文本字段对象添加到我的布局中，然后我按 Alt+A，该字段将获得焦点。
但是 Vaadin 怎么知道“&Address”是 ALT+A？？？它是在内部解析字符串还是将其与某些内容进行比较？
键盘快捷键的“&Address”shorthand notation 是什么？还有其他 shorthand 符号吗？
来自ShortcutAction javadocs:
Insert one or more modifier characters before the character to use as keycode. E.g "&Save" will make a shortcut responding to ALT-S, "E^xit" will respond to CTRL-X. Multiple modifiers can be used, e.g "&^Delete" will respond to CTRL-ALT-D (the order of the modifier characters is not important).
The modifier characters will be removed from the caption. The modifier character is be escaped by itself: two consecutive characters are turned into the original character w/o the special meaning. E.g "Save&&&close" will respond to ALT-C, and the caption will say "Save&close".
共有三个修饰字符：^ (ctrl)、& (alt) 和 _ (shift)。在内部，Vaadin 使用正则表达式解析 shorthand 标题，匹配修饰符字符并构建键盘快捷键。可以看看代码here.