RFR: 8244735: Error on iOS passing keys with unicode values greater than 255

[Johan Vos]

On Mon, 11 May 2020 12:50:48 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

> With this PR, we pass directly the 16-bit unsigned short for a character (unicode value) to the Java layer, avoiding
> the cast with the C++ 8-bit char, that fails for non-ascii characters like euro (€) or quote (").
> We also avoid the mapping between iOS keys and JavaFX `KeyCode`, except for `ENTER` and `BACK_SPACE`, as the mapping
> for some keys was wrong, like for "%", with ascii value 0x25, that was mapped to KeyCode.LEFT.
> Finally, the iOS keyboard is set to `UIKeyboardTypeASCIICapable`, to prevent the display of the emoji keyboard, that
> can't be currently processed.

This indeed fixes JDK-8244735.
It only touches ios-specific files, hence there is no impact on other platforms.

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Marked as reviewed by jvos (Reviewer).

PR: https://git.openjdk.java.net/jfx/pull/217