I used Intellij IDEA to automatically refactor code to achive 3 goals.
1) get rid of anonymouse classes, and replace the with lamba to get more readeable and clean code (like in TableWaitingDialog).
2) make effectively final variables actually final to avoid inadvertent changes on it in further releases and keep objects as immutable, as possible.
3) Get rid of unused imports (most of the changes) in whole project classes.
RotatedResizedImageCache and MultiRotatedResizedImageCache contain the caching
machinery.
A cache of rotated and resized images is added to ImageCache, and is used by
the resizing functions there.
All the resizing and rotation functions in ImageHelper are redirected to the
ones in ImageCache.
This is slightly inefficient because it will cache some calls that are never
repeated, but it prevents developers from mistakenly using uncached functions
when calls are repeated, seriously impacting performance.
Also resizing functions that only take a width or an height have been removed,
and their calls fixed to provide the other dimension. It's still possible to
specify -1 as width or height to ignore constraints in that dimension, though.
Greatly speeds up UI performance.
