[CB19] Some refactoring

        final int keyX = event.mX;

        final int keyY = event.mY;

        final int newIndex = size();

        mCombinerChain.processEvent(mEvents, event);

        mEvents.add(event);

        refreshTypedWordCache();

        processEvent(event);

        mCursorPositionWithinWord = mCodePointSize;

        if (newIndex < MAX_WORD_LENGTH) {

            mPrimaryKeyCodes[newIndex] = primaryCode >= Constants.CODE_SPACE

        mAutoCorrection = null;

    }

    private void processEvent(final Event event) {

        mCombinerChain.processEvent(mEvents, event);

        mEvents.add(event);

        refreshTypedWordCache();

    }

    /**

     * Delete the last composing unit as a result of hitting backspace.

     */

    public void deleteLast(final Event event) {

        mCombinerChain.processEvent(mEvents, event);

        mEvents.add(event);

        refreshTypedWordCache();

        processEvent(event);

        // We may have deleted the last one.

        if (0 == size()) {

            mIsFirstCharCapitalized = false;