protected void setRefreshingInternal(boolean doScroll) {
mState = REFRESHING;
if (mMode.canPullDown()) {
mHeaderLayout.refreshing();
}
if (mMode.canPullUp()) {
mFooterLayout.refreshing();
}
if (doScroll) {
if (mShowViewWhileRefreshing) {
smoothScrollTo(mCurrentMode == Mode.PULL_DOWN_TO_REFRESH ? -mHeaderHeight : mHeaderHeight);
} else {
smoothScrollTo(0);
}
}
}
/**
* Called when the UI has been to be updated to be in the {@link
* com.handmark.pulltorefresh.library.PullToRefreshBase.State#RESET} state.
*/
protected void onReset() {
mIsBeingDragged = false;
mLayoutVisibilityChangesEnabled = true;
// Always reset both layouts, just in case...
mHeaderLayout.reset();
mFooterLayout.reset();
smoothScrollTo(0);
}
protected void resetHeader() {
mState = PULL_TO_REFRESH;
mIsBeingDragged = false;
if (mMode.canPullDown()) {
mHeaderLayout.reset();
}
if (mMode.canPullUp()) {
mFooterLayout.reset();
}
smoothScrollTo(0);
}
private final void smoothScrollToAndBack(int y) {
smoothScrollTo(
y,
SMOOTH_SCROLL_DURATION_MS,
0,
new OnSmoothScrollFinishedListener() {
@Override
public void onSmoothScrollFinished() {
smoothScrollTo(0, SMOOTH_SCROLL_DURATION_MS, DEMO_SCROLL_INTERVAL, null);
}
});
}
/**
* Called when the UI has been to be updated to be in the {@link
* com.handmark.pulltorefresh.library.PullToRefreshBase.State#REFRESHING} or {@link
* com.handmark.pulltorefresh.library.PullToRefreshBase.State#MANUAL_REFRESHING} state.
*
* @param doScroll - Whether the UI should scroll for this event.
*/
protected void onRefreshing(final boolean doScroll) {
if (mMode.showHeaderLoadingLayout()) {
mHeaderLayout.refreshing();
}
if (mMode.showFooterLoadingLayout()) {
mFooterLayout.refreshing();
}
if (doScroll) {
if (mShowViewWhileRefreshing) {
// Call Refresh Listener when the Scroll has finished
OnSmoothScrollFinishedListener listener =
new OnSmoothScrollFinishedListener() {
@Override
public void onSmoothScrollFinished() {
callRefreshListener();
}
};
switch (mCurrentMode) {
case MANUAL_REFRESH_ONLY:
case PULL_FROM_END:
smoothScrollTo(getFooterSize(), listener);
break;
default:
case PULL_FROM_START:
smoothScrollTo(-getHeaderSize(), listener);
break;
}
} else {
smoothScrollTo(0);
}
} else {
// We're not scrolling, so just call Refresh Listener now
callRefreshListener();
}
}
/**
* Smooth Scroll to Y position using the default duration of {@value #SMOOTH_SCROLL_DURATION_MS}
* ms.
*
* @param y - Y position to scroll to
*/
protected final void smoothScrollTo(int y) {
smoothScrollTo(y, SMOOTH_SCROLL_DURATION_MS);
}
@Override
public final boolean onTouchEvent(MotionEvent event) {
if (!isPullToRefreshEnabled()) {
return false;
}
// If we're refreshing, and the flag is set. Eat the event
if (mDisableScrollingWhileRefreshing && isRefreshing()) {
return true;
}
if (event.getAction() == MotionEvent.ACTION_DOWN && event.getEdgeFlags() != 0) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_MOVE:
{
if (mIsBeingDragged) {
mLastMotionY = event.getY();
pullEvent();
return true;
}
break;
}
case MotionEvent.ACTION_DOWN:
{
if (isReadyForPull()) {
mLastMotionY = mInitialMotionY = event.getY();
return true;
}
break;
}
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
{
if (mIsBeingDragged) {
mIsBeingDragged = false;
if (mState == RELEASE_TO_REFRESH) {
if (null != mOnRefreshListener) {
setRefreshingInternal(true);
mOnRefreshListener.onRefresh(this);
return true;
} else if (null != mOnRefreshListener2) {
setRefreshingInternal(true);
if (mCurrentMode == Mode.PULL_DOWN_TO_REFRESH) {
mOnRefreshListener2.onPullDownToRefresh(this);
} else if (mCurrentMode == Mode.PULL_UP_TO_REFRESH) {
mOnRefreshListener2.onPullUpToRefresh(this);
}
return true;
} else {
// If we don't have a listener, just reset
resetHeader();
return true;
}
}
smoothScrollTo(0);
return true;
}
break;
}
}
return false;
}
/**
* Smooth Scroll to position using the default duration of {@value #SMOOTH_SCROLL_DURATION_MS} ms.
*
* @param scrollValue - Position to scroll to
*/
protected final void smoothScrollTo(int scrollValue) {
smoothScrollTo(scrollValue, getPullToRefreshScrollDuration());
}
@Override
public final boolean onTouchEvent(MotionEvent event) {
if (!isPullToRefreshEnabled()) {
return false;
}
// If we're refreshing, and the flag is set. Eat the event
if (!mScrollingWhileRefreshingEnabled && isRefreshing()) {
return true;
}
if (event.getAction() == MotionEvent.ACTION_DOWN && event.getEdgeFlags() != 0) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_MOVE:
{
if (mIsBeingDragged) {
mLastMotionY = event.getY();
mLastMotionX = event.getX();
pullEvent();
return true;
}
break;
}
case MotionEvent.ACTION_DOWN:
{
if (isReadyForPull()) {
mLastMotionY = mInitialMotionY = event.getY();
mLastMotionX = mInitialMotionX = event.getX();
return true;
}
break;
}
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
{
if (mIsBeingDragged) {
mIsBeingDragged = false;
if (mState == State.RELEASE_TO_REFRESH
&& (null != mOnRefreshListener || null != mOnRefreshListener2)) {
setState(State.REFRESHING, true);
return true;
}
// If we're already refreshing, just scroll back to the top
if (isRefreshing()) {
smoothScrollTo(0);
return true;
}
// If we haven't returned by here, then we're not in a state
// to pull, so just reset
setState(State.RESET);
return true;
}
break;
}
}
return false;
}
/**
* Smooth Scroll to position using the specific duration
*
* @param scrollValue - Position to scroll to
* @param duration - Duration of animation in milliseconds
*/
private final void smoothScrollTo(int scrollValue, long duration) {
smoothScrollTo(scrollValue, duration, 0, null);
}
/**
* Smooth Scroll to position using the default duration of {@value #SMOOTH_SCROLL_DURATION_MS} ms.
*
* @param scrollValue - Position to scroll to
* @param listener - Listener for scroll
*/
protected final void smoothScrollTo(int scrollValue, OnSmoothScrollFinishedListener listener) {
smoothScrollTo(scrollValue, getPullToRefreshScrollDuration(), 0, listener);
}