/**
* Actions a Pull Event
*
* @return true if the Event has been handled, false if there has been no change
*/
private boolean pullEvent() {
final int newHeight;
final int oldHeight = getScrollY();
switch (mCurrentMode) {
case PULL_UP_TO_REFRESH:
newHeight = Math.round(Math.max(mInitialMotionY - mLastMotionY, 0) / FRICTION);
break;
case PULL_DOWN_TO_REFRESH:
default:
newHeight = Math.round(Math.min(mInitialMotionY - mLastMotionY, 0) / FRICTION);
break;
}
setHeaderScroll(newHeight);
if (newHeight != 0) {
float scale = Math.abs(newHeight) / (float) mHeaderHeight;
switch (mCurrentMode) {
case PULL_UP_TO_REFRESH:
mFooterLayout.onPullY(scale);
break;
case PULL_DOWN_TO_REFRESH:
mHeaderLayout.onPullY(scale);
break;
}
if (mState == PULL_TO_REFRESH && mHeaderHeight < Math.abs(newHeight)) {
mState = RELEASE_TO_REFRESH;
onReleaseToRefresh();
return true;
} else if (mState == RELEASE_TO_REFRESH && mHeaderHeight >= Math.abs(newHeight)) {
mState = PULL_TO_REFRESH;
onPullToRefresh();
return true;
}
}
return oldHeight != newHeight;
}
