Merge "Continue using window's sysui flags if task thumbnail unavailable" into ub-launcher3-qt-dev

    private void updateSysUiFlags(float windowProgress) {

        if (mRecentsView != null) {

            TaskView centermostTask = mRecentsView.getTaskViewAt(mRecentsView

                    .getPageNearestToCenterOfScreen());

            int centermostTaskFlags = centermostTask == null ? 0

                    : centermostTask.getThumbnail().getSysUiStatusNavFlags();

            boolean useHomeScreenFlags = windowProgress > 1 - UPDATE_SYSUI_FLAGS_THRESHOLD;

            // We will handle the sysui flags based on the centermost task view.

            mRecentsAnimationWrapper.setWindowThresholdCrossed(true);

            int sysuiFlags = windowProgress > 1 - UPDATE_SYSUI_FLAGS_THRESHOLD

                    ? 0

                    : mRecentsView.getTaskViewAt(mRecentsView.getPageNearestToCenterOfScreen())

                            .getThumbnail().getSysUiStatusNavFlags();

            mRecentsAnimationWrapper.setWindowThresholdCrossed(centermostTaskFlags != 0

                    || useHomeScreenFlags);

            int sysuiFlags = useHomeScreenFlags ? 0 : centermostTaskFlags;

            mActivity.getSystemUiController().updateUiState(UI_STATE_OVERVIEW, sysuiFlags);

        }

    }