Package limn.i18n

Class LanguageWitness

java.lang.Object
limn.i18n.LanguageWitness
public final class LanguageWitness extends Object
Whether the language moved since a derived string was last built: the two facts a memo of formatted text has to compare, I18n.epoch() and I18n.locale(), held as one.

A spinner's displayed value, a video view's clock, a colour picker's spoken description: each is a string built from a value and the language, and each is rebuilt only when one of the two moved, because building it inside a describe hook would allocate on every damaged frame. Three widgets kept the epoch and the locale as two fields and two comparisons apiece; this is the pair once, with the refresh folded into the question.

  • Constructor Details

    • LanguageWitness

      public LanguageWitness()

  • Method Details

    • moved

      public boolean moved()
      Whether the language moved since the last call, and if it did, remembers where it is now. Asked first, before the memo's own keys, so that the answer is taken even when another key forces the rebuild anyway; otherwise the next frame would report a move that had already been built for.
      Returns:
      whether the epoch or the locale differs from the last call; always true on the first

    • locale

      public @Nullable Locale locale()
      Returns:
      the locale the last built string was made under, or null before the first