/** 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);
}
/**
* 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;
}
@Override
public final boolean demo() {
if (mMode.showHeaderLoadingLayout() && isReadyForPullStart()) {
smoothScrollToAndBack(-getHeaderSize() * 2);
return true;
} else if (mMode.showFooterLoadingLayout() && isReadyForPullEnd()) {
smoothScrollToAndBack(getFooterSize() * 2);
return true;
}
return false;
}
/**
* Used internally for {@link #getLoadingLayoutProxy(boolean, boolean)}. Allows derivative classes
* to include any extra LoadingLayouts.
*/
protected LoadingLayoutProxy createLoadingLayoutProxy(
final boolean includeStart, final boolean includeEnd) {
LoadingLayoutProxy proxy = new LoadingLayoutProxy();
if (includeStart && mMode.showHeaderLoadingLayout()) {
proxy.addLayout(mHeaderLayout);
}
if (includeEnd && mMode.showFooterLoadingLayout()) {
proxy.addLayout(mFooterLayout);
}
return proxy;
}
private void addIndicatorViews() {
Mode mode = getMode();
FrameLayout refreshableViewWrapper = getRefreshableViewWrapper();
if (mode.showHeaderLoadingLayout() && null == mIndicatorIvTop) {
// If the mode can pull down, and we don't have one set already
mIndicatorIvTop = new IndicatorLayout(getContext(), Mode.PULL_FROM_START);
FrameLayout.LayoutParams params =
new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.rightMargin =
getResources().getDimensionPixelSize(com.android.common.R.dimen.indicator_right_padding);
params.gravity = Gravity.TOP | Gravity.RIGHT;
refreshableViewWrapper.addView(mIndicatorIvTop, params);
} else if (!mode.showHeaderLoadingLayout() && null != mIndicatorIvTop) {
// If we can't pull down, but have a View then remove it
refreshableViewWrapper.removeView(mIndicatorIvTop);
mIndicatorIvTop = null;
}
if (mode.showFooterLoadingLayout() && null == mIndicatorIvBottom) {
// If the mode can pull down, and we don't have one set already
mIndicatorIvBottom = new IndicatorLayout(getContext(), Mode.PULL_FROM_END);
FrameLayout.LayoutParams params =
new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.rightMargin =
getResources().getDimensionPixelSize(com.android.common.R.dimen.indicator_right_padding);
params.gravity = Gravity.BOTTOM | Gravity.RIGHT;
refreshableViewWrapper.addView(mIndicatorIvBottom, params);
} else if (!mode.showFooterLoadingLayout() && null != mIndicatorIvBottom) {
// If we can't pull down, but have a View then remove it
refreshableViewWrapper.removeView(mIndicatorIvBottom);
mIndicatorIvBottom = null;
}
}
@Override
protected LoadingLayoutProxy createLoadingLayoutProxy(
final boolean includeStart, final boolean includeEnd) {
LoadingLayoutProxy proxy = super.createLoadingLayoutProxy(includeStart, includeEnd);
if (mListViewExtrasEnabled) {
final Mode mode = getMode();
if (includeStart && mode.showHeaderLoadingLayout()) {
proxy.addLayout(mHeaderLoadingView);
}
if (includeEnd && mode.showFooterLoadingLayout()) {
proxy.addLayout(mFooterLoadingView);
}
}
return proxy;
}
/**
* 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();
}
}
/**
* @deprecated You should now call this method on the result of {@link
* #getLoadingLayoutProxy(boolean, boolean)}.
*/
public void setReleaseLabel(CharSequence releaseLabel, Mode mode) {
getLoadingLayoutProxy(mode.showHeaderLoadingLayout(), mode.showFooterLoadingLayout())
.setReleaseLabel(releaseLabel);
}
/**
* @deprecated You should now call this method on the result of {@link
* #getLoadingLayoutProxy(boolean, boolean)}.
*/
public void setPullLabel(CharSequence pullLabel, Mode mode) {
getLoadingLayoutProxy(mode.showHeaderLoadingLayout(), mode.showFooterLoadingLayout())
.setPullLabel(pullLabel);
}
/**
* @deprecated You should now call this method on the result of {@link
* #getLoadingLayoutProxy(boolean, boolean)}.
*/
public void setLoadingDrawable(Drawable drawable, Mode mode) {
getLoadingLayoutProxy(mode.showHeaderLoadingLayout(), mode.showFooterLoadingLayout())
.setLoadingDrawable(drawable);
}
@Override
public final boolean onInterceptTouchEvent(MotionEvent event) {
if (!isPullToRefreshEnabled()) {
return false;
}
final int action = event.getAction();
if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
mIsBeingDragged = false;
return false;
}
if (action != MotionEvent.ACTION_DOWN && mIsBeingDragged) {
return true;
}
switch (action) {
case MotionEvent.ACTION_MOVE:
{
// If we're refreshing, and the flag is set. Eat all MOVE events
if (!mScrollingWhileRefreshingEnabled && isRefreshing()) {
return true;
}
if (isReadyForPull()) {
final float y = event.getY(), x = event.getX();
final float diff, oppositeDiff, absDiff;
// We need to use the correct values, based on scroll
// direction
switch (getPullToRefreshScrollDirection()) {
case HORIZONTAL:
diff = x - mLastMotionX;
oppositeDiff = y - mLastMotionY;
break;
case VERTICAL:
default:
diff = y - mLastMotionY;
oppositeDiff = x - mLastMotionX;
break;
}
absDiff = Math.abs(diff);
if (absDiff > mTouchSlop && (!mFilterTouchEvents || absDiff > Math.abs(oppositeDiff))) {
if (mMode.showHeaderLoadingLayout() && diff >= 1f && isReadyForPullStart()) {
mLastMotionY = y;
mLastMotionX = x;
mIsBeingDragged = true;
if (mMode == Mode.BOTH) {
mCurrentMode = Mode.PULL_FROM_START;
}
} else if (mMode.showFooterLoadingLayout() && diff <= -1f && isReadyForPullEnd()) {
mLastMotionY = y;
mLastMotionX = x;
mIsBeingDragged = true;
if (mMode == Mode.BOTH) {
mCurrentMode = Mode.PULL_FROM_END;
}
}
}
}
break;
}
case MotionEvent.ACTION_DOWN:
{
if (isReadyForPull()) {
mLastMotionY = mInitialMotionY = event.getY();
mLastMotionX = mInitialMotionX = event.getX();
mIsBeingDragged = false;
}
break;
}
}
return mIsBeingDragged;
}