Remove unnecessary onRefreshKeyboard call.
When using the sliding spacebar language switch on ICS, both
LatinIME.toggleLanguage() and
InputMethodService.onCurrentInputMethodSubtypeChanged() invoke
LatinIME.onRefreshKeyboard(). This change eliminates the first one if
it isn't necessary.
This change also cleans up the followings.
* reuse theme Context when the keyboard theme hasn't been changed.
* clear the Keyboard cache when theme has been switched.
* eliminates unnecessary Context reference from LatinKeyboard and
SlidingLocaleDrawable.
* recycle Bitmap and reuse Canvas in KeyboardView.
Bug: 4725930
Change-Id: I87366e9304879d94d12b7345adea768d86d43519
6 files changed