/**
* Create a {@code LoadingLayout} instance matched by <b>{@code clazz} token</b>
*
* @param layoutCode Loading layout code, which must be defined in pulltorefresh.xml
* @param context
* @param mode
* @return {@code LoadingLayout} instance if the class matched by {@code layoutCode} exists, or
* {@code RotateLoadingLayout} instance if not
*/
public static LoadingLayout createLoadingLayout(
Class<? extends LoadingLayout> clazz,
Context context,
Mode mode,
Orientation orientation,
TypedArray attrs) {
LoadingLayout layout = null;
// Prevent NullPointerException
if (clazz == null) {
Log.i(
LOG_TAG,
"The Class token of the Loading Layout is missing. Default Loading Layout will be used.");
clazz = DefaultLoadingLayoutFactory.createLoadingLayoutClazz("");
}
layout = tryNewInstance(clazz, context, mode, orientation, attrs);
// If trying to create new instance has failed,
if (layout == null) {
layout =
DefaultLoadingLayoutFactory.createLoadingLayout(clazz, context, mode, orientation, attrs);
}
layout.setVisibility(View.INVISIBLE);
return layout;
}
@Override
protected void handleStyledAttributes(TypedArray a) {
super.handleStyledAttributes(a);
mListViewExtrasEnabled = a.getBoolean(R.styleable.PullToRefresh_ptrListViewExtrasEnabled, true);
if (mListViewExtrasEnabled) {
final FrameLayout.LayoutParams lp =
new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_HORIZONTAL);
// Create Loading Views ready for use later
FrameLayout frame = new FrameLayout(getContext());
mHeaderLoadingView = createLoadingLayout(getContext(), Mode.PULL_FROM_START, a);
mHeaderLoadingView.setVisibility(View.GONE);
frame.addView(mHeaderLoadingView, lp);
mRefreshableView.addHeaderView(frame, null, false);
mLvFooterLoadingFrame = new FrameLayout(getContext());
mFooterLoadingView = createLoadingLayout(getContext(), Mode.PULL_FROM_END, a);
mFooterLoadingView.setVisibility(View.GONE);
mLvFooterLoadingFrame.addView(mFooterLoadingView, lp);
/**
* If the value for Scrolling While Refreshing hasn't been explicitly set via XML, enable
* Scrolling While Refreshing.
*/
if (!a.hasValue(R.styleable.PullToRefresh_ptrScrollingWhileRefreshingEnabled)) {
setScrollingWhileRefreshingEnabled(true);
}
}
}
protected LoadingLayout createLoadingLayout(Context context, Mode mode, TypedArray attrs) {
LoadingLayout layout =
mLoadingAnimationStyle.createLoadingLayout(
context, mode, getPullToRefreshScrollDirection(), attrs);
layout.setVisibility(View.INVISIBLE);
return layout;
}
/**
* Updates the View State when the mode has been set. This does not do any checking that the mode
* is different to current state so always updates.
*/
protected void updateUIForMode() {
// We need to use the correct LayoutParam values, based on scroll
// direction
final LayoutParams lp = getLoadingLayoutLayoutParams();
// Remove Header, and then add Header Loading View again if needed
if (this == mHeaderLayout.getParent()) {
removeView(mHeaderLayout);
}
if (mMode.showHeaderLoadingLayout()) {
addViewInternal(mHeaderLayout, 0, lp);
}
// Remove Footer, and then add Footer Loading View again if needed
if (this == mFooterLayout.getParent()) {
removeView(mFooterLayout);
}
if (mMode.showFooterLoadingLayout()) {
addViewInternal(mFooterLayout, lp);
}
// Hide Loading Views
refreshLoadingViewsSize();
// If we're not using Mode.BOTH, set mCurrentMode to mMode, otherwise
// set it to pull down
mCurrentMode = (mMode != Mode.BOTH) ? mMode : Mode.PULL_FROM_START;
}
/**
* Updates the View State when the mode has been set. This does not do any checking that the mode
* is different to current state so always updates.
*/
protected void updateUIForMode() {
// Remove Header, and then add Header Loading View again if needed
if (this == mHeaderLayout.getParent()) {
removeView(mHeaderLayout);
}
if (mMode.canPullDown()) {
LinearLayout.LayoutParams llp =
new LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
llp.setMargins(mMargin, 0, mMargin, 0);
addViewInternal(mHeaderLayout, 0, llp);
}
// Remove Footer, and then add Footer Loading View again if needed
if (this == mFooterLayout.getParent()) {
removeView(mFooterLayout);
}
if (mMode.canPullUp()) {
LinearLayout.LayoutParams llp =
new LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
llp.setMargins(mMargin, 0, mMargin, 0);
addViewInternal(mFooterLayout, 0, llp);
}
// Hide Loading Views
refreshLoadingViewsHeight();
// If we're not using Mode.BOTH, set mCurrentMode to mMode, otherwise
// set it to pull down
mCurrentMode = (mMode != Mode.BOTH) ? mMode : Mode.PULL_DOWN_TO_REFRESH;
}
/** Re-measure the Loading Views height, and adjust internal padding as necessary */
private void refreshLoadingViewsHeight() {
if (mMode.canPullDown()) {
measureView(mHeaderLayout);
mHeaderHeight = mHeaderLayout.getMeasuredHeight();
} else if (mMode.canPullUp()) {
measureView(mFooterLayout);
mHeaderHeight = mFooterLayout.getMeasuredHeight();
} else {
mHeaderHeight = 0;
}
// Hide Loading Views
switch (mMode) {
case DISABLED:
setPadding(0, 0, 0, 0);
case BOTH:
setPadding(0, -mHeaderHeight, 0, -mHeaderHeight);
break;
case PULL_UP_TO_REFRESH:
setPadding(0, 0, 0, -mHeaderHeight);
break;
case PULL_DOWN_TO_REFRESH:
default:
setPadding(0, -mHeaderHeight, 0, 0);
break;
}
}
/**
* Set Text to show when the Widget is being pulled, and will refresh when released
*
* @param releaseLabel - String to display
* @param mode - Controls which Header/Footer Views will be updated. <code>Mode.BOTH</code> will
* update all available, other values will update the relevant View.
*/
public void setReleaseLabel(String releaseLabel, Mode mode) {
if (null != mHeaderLayout && mode.canPullDown()) {
mHeaderLayout.setReleaseLabel(releaseLabel);
}
if (null != mFooterLayout && mode.canPullUp()) {
mFooterLayout.setReleaseLabel(releaseLabel);
}
}
@Override
public void setRefreshingLabel(String refreshingLabel, Mode mode) {
if (null != mHeaderLayout && mode.canPullDown()) {
mHeaderLayout.setRefreshingLabel(refreshingLabel);
}
if (null != mFooterLayout && mode.canPullUp()) {
mFooterLayout.setRefreshingLabel(refreshingLabel);
}
}
public void setPullLabel(String pullLabel) {
super.setPullLabel(pullLabel);
if (null != mHeaderLoadingView) {
mHeaderLoadingView.setPullLabel(pullLabel);
}
if (null != mFooterLoadingView) {
mFooterLoadingView.setPullLabel(pullLabel);
}
}
public void setRefreshingLabel(String refreshingLabel) {
super.setRefreshingLabel(refreshingLabel);
if (null != mHeaderLoadingView) {
mHeaderLoadingView.setRefreshingLabel(refreshingLabel);
}
if (null != mFooterLoadingView) {
mFooterLoadingView.setRefreshingLabel(refreshingLabel);
}
}
/** Called when the UI needs to be updated to the 'Release to Refresh' state */
protected void onReleaseToRefresh() {
switch (mCurrentMode) {
case PULL_UP_TO_REFRESH:
mFooterLayout.releaseToRefresh();
break;
case PULL_DOWN_TO_REFRESH:
mHeaderLayout.releaseToRefresh();
break;
}
}
/**
* 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);
}
/**
* Set the drawable used in the loading layout.
*
* @param drawable - Drawable to display
* @param mode - Controls which Header/Footer Views will be updated. <code>Mode.BOTH</code> will
* update all available, other values will update the relevant View.
*/
public void setLoadingDrawable(Drawable drawable, Mode mode) {
if (null != mHeaderLayout && mode.canPullDown()) {
mHeaderLayout.setLoadingDrawable(drawable);
}
if (null != mFooterLayout && mode.canPullUp()) {
mFooterLayout.setLoadingDrawable(drawable);
}
// The Loading Height may have changed, so refresh
refreshLoadingViewsHeight();
}
@Override
protected void onReset() {
/** If the extras are not enabled, just call up to super and return. */
if (!mListViewExtrasEnabled) {
super.onReset();
return;
}
final LoadingLayout originalLoadingLayout, listViewLoadingLayout;
final int scrollToHeight, selection;
final boolean scrollLvToEdge;
switch (getCurrentMode()) {
case MANUAL_REFRESH_ONLY:
case PULL_FROM_END:
originalLoadingLayout = getFooterLayout();
listViewLoadingLayout = mFooterLoadingView;
selection = mRefreshableView.getCount() - 1;
scrollToHeight = getFooterSize();
scrollLvToEdge = Math.abs(mRefreshableView.getLastVisiblePosition() - selection) <= 1;
break;
case PULL_FROM_START:
default:
originalLoadingLayout = getHeaderLayout();
listViewLoadingLayout = mHeaderLoadingView;
scrollToHeight = -getHeaderSize();
selection = 0;
scrollLvToEdge = Math.abs(mRefreshableView.getFirstVisiblePosition() - selection) <= 1;
break;
}
// If the ListView header loading layout is showing, then we need to
// flip so that the original one is showing instead
if (listViewLoadingLayout.getVisibility() == View.VISIBLE) {
// Set our Original View to Visible
originalLoadingLayout.showInvisibleViews();
// Hide the ListView Header/Footer
listViewLoadingLayout.setVisibility(View.GONE);
/**
* Scroll so the View is at the same Y as the ListView header/footer, but only scroll if:
* we've pulled to refresh, it's positioned correctly
*/
if (scrollLvToEdge && getState() != State.MANUAL_REFRESHING) {
mRefreshableView.setSelection(selection);
setHeaderScroll(scrollToHeight);
}
}
// Finally, call up to super
super.onReset();
}
@Override
protected void setRefreshingInternal(boolean doScroll) {
// If we're empty, then the header/footer views won't show so we use the
// normal method
ListAdapter adapter = mRefreshableView.getAdapter();
if (null == adapter || adapter.isEmpty()) {
super.setRefreshingInternal(doScroll);
return;
}
super.setRefreshingInternal(false);
final LoadingLayout originalLoadingLayout, listViewLoadingLayout;
final int selection, scrollToY;
switch (getCurrentMode()) {
case MODE_PULL_UP_TO_REFRESH:
originalLoadingLayout = getFooterLayout();
listViewLoadingLayout = mFooterLoadingView;
selection = mRefreshableView.getCount() - 1;
scrollToY = getScrollY() - getHeaderHeight();
break;
case MODE_PULL_DOWN_TO_REFRESH:
default:
originalLoadingLayout = getHeaderLayout();
listViewLoadingLayout = mHeaderLoadingView;
selection = 0;
scrollToY = getScrollY() + getHeaderHeight();
break;
}
if (doScroll) {
// We scroll slightly so that the ListView's header/footer is at the
// same Y position as our normal header/footer
setHeaderScroll(scrollToY);
}
// Hide our original Loading View
originalLoadingLayout.setVisibility(View.INVISIBLE);
// Show the ListView Loading View and set it to refresh
listViewLoadingLayout.setVisibility(View.VISIBLE);
listViewLoadingLayout.refreshing();
if (doScroll) {
// Make sure the ListView is scrolled to show the loading
// header/footer
mRefreshableView.setSelection(selection);
// Smooth scroll as normal
smoothScrollTo(0);
}
}
/**
* Set the Last Updated Text. This displayed under the main label when Pulling
*
* @param label - Label to set
*/
public void setLastUpdatedLabel(CharSequence label) {
if (null != mHeaderLayout) {
mHeaderLayout.setSubHeaderText(label);
}
if (null != mFooterLayout) {
mFooterLayout.setSubHeaderText(label);
}
// Refresh Height as it may have changed
refreshLoadingViewsHeight();
}
protected void resetHeader() {
mState = PULL_TO_REFRESH;
mIsBeingDragged = false;
if (mMode.canPullDown()) {
mHeaderLayout.reset();
}
if (mMode.canPullUp()) {
mFooterLayout.reset();
}
smoothScrollTo(0);
}
/**
* Called when the UI has been to be updated to be in the {@link
* com.handmark.pulltorefresh.library.PullToRefreshBase.State#RELEASE_TO_REFRESH} state.
*/
protected void onReleaseToRefresh() {
switch (mCurrentMode) {
case PULL_FROM_END:
mFooterLayout.releaseToRefresh();
break;
case PULL_FROM_START:
mHeaderLayout.releaseToRefresh();
break;
default:
// NO-OP
break;
}
}
/**
* Actions a Pull Event
*
* @return true if the Event has been handled, false if there has been no change
*/
private void pullEvent() {
final int newScrollValue;
final int itemDimension;
final float initialMotionValue, lastMotionValue;
switch (getPullToRefreshScrollDirection()) {
case HORIZONTAL:
initialMotionValue = mInitialMotionX;
lastMotionValue = mLastMotionX;
break;
case VERTICAL:
default:
initialMotionValue = mInitialMotionY;
lastMotionValue = mLastMotionY;
break;
}
switch (mCurrentMode) {
case PULL_FROM_END:
newScrollValue = Math.round(Math.max(initialMotionValue - lastMotionValue, 0) / FRICTION);
itemDimension = getFooterSize();
break;
case PULL_FROM_START:
default:
newScrollValue = Math.round(Math.min(initialMotionValue - lastMotionValue, 0) / FRICTION);
itemDimension = getHeaderSize();
break;
}
setHeaderScroll(newScrollValue);
if (newScrollValue != 0 && !isRefreshing()) {
float scale = Math.abs(newScrollValue) / (float) itemDimension;
switch (mCurrentMode) {
case PULL_FROM_END:
mFooterLayout.onPull(scale);
break;
case PULL_FROM_START:
default:
mHeaderLayout.onPull(scale);
break;
}
if (mState != State.PULL_TO_REFRESH && itemDimension >= Math.abs(newScrollValue)) {
setState(State.PULL_TO_REFRESH);
} else if (mState == State.PULL_TO_REFRESH && itemDimension < Math.abs(newScrollValue)) {
setState(State.RELEASE_TO_REFRESH);
}
}
}
/** Re-measure the Loading Views height, and adjust internal padding as necessary */
protected final void refreshLoadingViewsSize() {
final int maximumPullScroll = (int) (getMaximumPullScroll() * 1.2f);
int pLeft = getPaddingLeft();
int pTop = getPaddingTop();
int pRight = getPaddingRight();
int pBottom = getPaddingBottom();
switch (getPullToRefreshScrollDirection()) {
case HORIZONTAL:
if (mMode.showHeaderLoadingLayout()) {
mHeaderLayout.setWidth(maximumPullScroll);
pLeft = -maximumPullScroll;
} else {
pLeft = 0;
}
if (mMode.showFooterLoadingLayout()) {
mFooterLayout.setWidth(maximumPullScroll);
pRight = -maximumPullScroll;
} else {
pRight = 0;
}
break;
case VERTICAL:
if (mMode.showHeaderLoadingLayout()) {
mHeaderLayout.setHeight(maximumPullScroll);
pTop = -maximumPullScroll;
} else {
pTop = 0;
}
if (mMode.showFooterLoadingLayout()) {
mFooterLayout.setHeight(maximumPullScroll);
pBottom = -maximumPullScroll;
} else {
pBottom = 0;
}
break;
}
if (DEBUG) {
Log.d(
LOG_TAG,
String.format(
"Setting Padding. L: %d, T: %d, R: %d, B: %d", pLeft, pTop, pRight, pBottom));
}
setPadding(pLeft, pTop, pRight, pBottom);
}
@Override
protected void resetHeader() {
// If we're empty, then the header/footer views won't show so we use the
// normal method
ListAdapter adapter = mRefreshableView.getAdapter();
if (null == adapter || adapter.isEmpty()) {
super.resetHeader();
return;
}
LoadingLayout originalLoadingLayout;
LoadingLayout listViewLoadingLayout;
int scrollToHeight = getHeaderHeight();
final boolean doScroll;
switch (getCurrentMode()) {
case MODE_PULL_UP_TO_REFRESH:
originalLoadingLayout = getFooterLayout();
listViewLoadingLayout = mFooterLoadingView;
doScroll = isReadyForPullUp();
break;
case MODE_PULL_DOWN_TO_REFRESH:
default:
originalLoadingLayout = getHeaderLayout();
listViewLoadingLayout = mHeaderLoadingView;
scrollToHeight *= -1;
doScroll = isReadyForPullDown();
break;
}
// Set our Original View to Visible
originalLoadingLayout.setVisibility(View.VISIBLE);
// Scroll so our View is at the same Y as the ListView header/footer,
// but only scroll if the ListView is at the top/bottom
if (doScroll) {
setHeaderScroll(scrollToHeight);
}
// Hide the ListView Header/Footer
listViewLoadingLayout.setVisibility(View.GONE);
super.resetHeader();
}
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);
}
}
}
/**
* 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;
}
/**
* Helper method which just calls scrollTo() in the correct scrolling direction.
*
* @param value - New Scroll value
*/
protected final void setHeaderScroll(int value) {
if (DEBUG) {
Log.d(LOG_TAG, "setHeaderScroll: " + value);
}
// Clamp value to with pull scroll range
final int maximumPullScroll = getMaximumPullScroll();
value = Math.min(maximumPullScroll, Math.max(-maximumPullScroll, value));
if (mLayoutVisibilityChangesEnabled) {
if (value < 0) {
mHeaderLayout.setVisibility(View.VISIBLE);
} else if (value > 0) {
mFooterLayout.setVisibility(View.VISIBLE);
} else {
mHeaderLayout.setVisibility(View.INVISIBLE);
mFooterLayout.setVisibility(View.INVISIBLE);
}
}
if (USE_HW_LAYERS) {
/**
* Use a Hardware Layer on the Refreshable View if we've scrolled at all. We don't use them on
* the Header/Footer Views as they change often, which would negate any HW layer performance
* boost.
*/
ViewCompat.setLayerType(
mRefreshableViewWrapper, value != 0 ? 2 /*
* View.
* LAYER_TYPE_HARDWARE
*/ : 0 /* View.LAYER_TYPE_NONE */);
}
switch (getPullToRefreshScrollDirection()) {
case VERTICAL:
scrollTo(0, value);
break;
case HORIZONTAL:
scrollTo(value, 0);
break;
}
}
@Override
protected final ListView createRefreshableView(Context context, AttributeSet attrs) {
ListView lv = new InternalListView(context, attrs);
final int mode = getMode();
// Loading View Strings
String pullLabel = context.getString(R.string.pull_to_refresh_pull_label);
String refreshingLabel = context.getString(R.string.pull_to_refresh_refreshing_label);
String releaseLabel = context.getString(R.string.pull_to_refresh_release_label);
// Add Loading Views
if (mode == MODE_PULL_DOWN_TO_REFRESH || mode == MODE_BOTH) {
FrameLayout frame = new FrameLayout(context);
mHeaderLoadingView =
new LoadingLayout(
context, MODE_PULL_DOWN_TO_REFRESH, releaseLabel, pullLabel, refreshingLabel);
frame.addView(
mHeaderLoadingView,
FrameLayout.LayoutParams.FILL_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT);
mHeaderLoadingView.setVisibility(View.GONE);
lv.addHeaderView(frame, null, false);
}
if (mode == MODE_PULL_UP_TO_REFRESH || mode == MODE_BOTH) {
mLvFooterLoadingFrame = new FrameLayout(context);
mFooterLoadingView =
new LoadingLayout(
context, MODE_PULL_UP_TO_REFRESH, releaseLabel, pullLabel, refreshingLabel);
mLvFooterLoadingFrame.addView(
mFooterLoadingView,
FrameLayout.LayoutParams.FILL_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT);
mFooterLoadingView.setVisibility(View.GONE);
}
// Set it to this so it can be used in ListActivity/ListFragment
lv.setId(android.R.id.list);
return lv;
}
protected void handleStyledAttributes(TypedArray typedarray)
{
super.handleStyledAttributes(typedarray);
p = typedarray.getBoolean(14, true);
if (p)
{
android.widget.FrameLayout.LayoutParams layoutparams = new android.widget.FrameLayout.LayoutParams(-1, -2, 1);
FrameLayout framelayout = new FrameLayout(getContext());
m = createLoadingLayout(getContext(), PullToRefreshBase.Mode.PULL_FROM_START, typedarray);
m.setVisibility(8);
framelayout.addView(m, layoutparams);
((ListView)l).addHeaderView(framelayout, null, false);
o = new FrameLayout(getContext());
n = createLoadingLayout(getContext(), PullToRefreshBase.Mode.PULL_FROM_END, typedarray);
n.setVisibility(8);
o.addView(n, layoutparams);
if (!typedarray.hasValue(13))
{
setScrollingWhileRefreshingEnabled(true);
}
}
}
/**
* 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();
}
}
protected final int getFooterSize() {
return mFooterLayout.getContentSize();
}
protected final int getHeaderSize() {
return mHeaderLayout.getContentSize();
}
@Override
protected void onRefreshing(final boolean doScroll) {
/**
* If we're not showing the Refreshing view, or the list is empty, the the header/footer views
* won't show so we use the normal method.
*/
ListAdapter adapter = mRefreshableView.getAdapter();
if (!mListViewExtrasEnabled
|| !getShowViewWhileRefreshing()
|| null == adapter
|| adapter.isEmpty()) {
super.onRefreshing(doScroll);
return;
}
super.onRefreshing(false);
final LoadingLayout origLoadingView, listViewLoadingView, oppositeListViewLoadingView;
final int selection, scrollToY;
switch (getCurrentMode()) {
case MANUAL_REFRESH_ONLY:
case PULL_FROM_END:
origLoadingView = getFooterLayout();
listViewLoadingView = mFooterLoadingView;
oppositeListViewLoadingView = mHeaderLoadingView;
selection = mRefreshableView.getCount() - 1;
scrollToY = getScrollY() - getFooterSize();
break;
case PULL_FROM_START:
default:
origLoadingView = getHeaderLayout();
listViewLoadingView = mHeaderLoadingView;
oppositeListViewLoadingView = mFooterLoadingView;
selection = 0;
scrollToY = getScrollY() + getHeaderSize();
break;
}
// Hide our original Loading View
origLoadingView.reset();
origLoadingView.hideAllViews();
// Make sure the opposite end is hidden too
oppositeListViewLoadingView.setVisibility(View.GONE);
// Show the ListView Loading View and set it to refresh.
listViewLoadingView.setVisibility(View.VISIBLE);
listViewLoadingView.refreshing();
if (doScroll) {
// We need to disable the automatic visibility changes for now
disableLoadingLayoutVisibilityChanges();
// We scroll slightly so that the ListView's header/footer is at the
// same Y position as our normal header/footer
setHeaderScroll(scrollToY);
// Make sure the ListView is scrolled to show the loading
// header/footer
mRefreshableView.setSelection(selection);
// Smooth scroll as normal
smoothScrollTo(0);
}
}
