How to fix help window gibberish text on mac

[caoliangnus]

For Mac users, please refer to this PR

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[damithc]

Nice 👍
Confirmed works on all three OS: Windows, Linux, OS-X?

[caoliangnus]

I am not sure about Linux system. For Windows, it has no such problem. For OS-X, I can confirm that it works.

[damithc]

I am not sure about Linux system. For Windows, it has no such problem. For OS-X, I can confirm that it works.

I meant, does it work on Windows after the fix? Fixing it for one platform can break it on another.

[caoliangnus]

Yes, it works.

[caoliangnus]

I realised that Google Map unable to load the page. Please see below for the solution.

Solution:
Change:
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko";

to:
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 5.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1";

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After:

[ZY-Ang]

Thanks for the reuse offer. Works on Ubuntu 16.04 LTS

[damithc]

Thanks for the reuse offer. Works on Ubuntu 16.04 LTS

Nice.

@caoliangnus I encourage you to submit this fix as a PR to se-edu/addressbook-level4 , after the exams of course.

@Zhiyuan-Amos FYI

[ZY-Ang]

@damithc @Zhiyuan-Amos I'm assuming @caoliangnus used this source https://stackoverflow.com/questions/41952734/javafx-webview-font-issue-on-mac for the fix.

Note that it might be hacky and probably using the other method in the comments, i.e. engine.setUserAgent(engine.getUserAgent().replace("Macintosh‌​; ", "")); might be better

As he said, setting the user agent to trick the system into thinking it is windows may not be such a good idea. Apparently Oracle knows about it and is a fix in Java 9: http://bugs.java.com/bugdatabase/view_bug.do?bug_id=JDK-8088205

However for the simplicity's sake, @caoliangnus's implementation should suffice