Help search in page

It is possible to show an auto-complete Search box at the top of the articles in the help GUI. This will allow to search for articles or even for terms in the whole wiki.

However you can also search for a term in any page by typing Ctrl+F as you could do in any Web browser.

Usage

Just type CTRL+F in the article page, and a small window allowing to search in a page will appear:

This window contains:

• One text field for the search term
• One button to search forward a term
• One button to search backward a term
• One button to close the window

Limitations

Beginning with Java 9, the search function in page will not be available by default because it tries to make accessible a private internal field of the WebEngine.

To make it available, you must add several --add-opens:

      --add-opens javafx.web/javafx.scene.web=ALL-UNNAMED --add-opens javafx.web/com.sun.webkit=ALL-UNNAMED

For information, you can use the --add-opens runtime option to allow your code to access non-public members. This can be referred to as deep reflection. Libraries that do this deep reflection are able to access all members, private and public. To grant this type of access to your code, you use the --add-opens option.

Here is the syntax:

--add-opens module/package=target-module(,target-module)*

This allows the given module to open the specified package. The compiler will not produce any errors or warnings when this is used^[1]

See also https://openjdk.org/jeps/261 for momre information