@Override
public void onBeforeScroll(int dx, int dy) {
if (mStickyMap == null) {
return;
}
HashMap<String, WXComponent> stickyMap = mStickyMap.get(getRef());
if (stickyMap == null) {
return;
}
Iterator<Map.Entry<String, WXComponent>> iterator = stickyMap.entrySet().iterator();
Map.Entry<String, WXComponent> entry;
WXComponent stickyComponent;
while (iterator.hasNext()) {
entry = iterator.next();
stickyComponent = entry.getValue();
if (stickyComponent != null
&& stickyComponent.getDomObject() != null
&& stickyComponent instanceof WXCell) {
if (stickyComponent.getHostView() == null) {
return;
}
int[] location = new int[2];
stickyComponent.getHostView().getLocationOnScreen(location);
int[] parentLocation = new int[2];
stickyComponent.getParentScroller().getView().getLocationOnScreen(parentLocation);
int top = location[1] - parentLocation[1];
boolean showSticky = ((WXCell) stickyComponent).lastLocationY > 0 && top <= 0 && dy > 0;
boolean removeSticky = ((WXCell) stickyComponent).lastLocationY <= 0 && top > 0 && dy < 0;
if (showSticky) {
bounceRecyclerView.notifyStickyShow((WXCell) stickyComponent);
} else if (removeSticky) {
bounceRecyclerView.notifyStickyRemove((WXCell) stickyComponent);
}
((WXCell) stickyComponent).lastLocationY = top;
}
}
}
/**
* Check last Sticky after scrollTo
*
* @param position scroll to position
*/
public void checkLastSticky(final int position) {
bounceRecyclerView.clearSticky();
for (int i = 0; i <= position; i++) {
WXComponent component = getChild(i);
if (component.isSticky() && component instanceof WXCell) {
if (component.getHostView() == null) {
return;
}
bounceRecyclerView.notifyStickyShow((WXCell) component);
}
}
}
@Override
public void notifyAppearStateChange(
int firstVisible, int lastVisible, int directionX, int directionY) {
// notify appear state
Iterator<AppearanceHelper> it = mAppearComponents.values().iterator();
String direction = directionY > 0 ? "up" : "down";
if (getOrientation() == Constants.Orientation.HORIZONTAL) {
direction = directionX > 0 ? "left" : "right";
}
while (it.hasNext()) {
AppearanceHelper item = it.next();
WXComponent component = item.getAwareChild();
if (!item.isWatch()) {
continue;
}
boolean outOfVisibleRange =
item.getCellPositionINScollable() < firstVisible
|| item.getCellPositionINScollable() > lastVisible;
View view = component.getHostView();
if (view == null) {
continue;
}
boolean visible = (!outOfVisibleRange) && item.isViewVisible();
int result = item.setAppearStatus(visible);
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("appear", "item " + item.getCellPositionINScollable() + " result " + result);
}
if (result == AppearanceHelper.RESULT_NO_CHANGE) {
continue;
}
component.notifyAppearStateChange(
result == AppearanceHelper.RESULT_APPEAR
? Constants.Event.APPEAR
: Constants.Event.DISAPPEAR,
direction);
}
}
/** @param loading should be {@link WXRefreshView} */
public void setFooterView(WXComponent loading) {
setLoadmoreEnable(true);
if (swipeLayout != null) {
if (swipeLayout.getFooterView() != null) {
swipeLayout.setLoadingHeight((int) loading.getDomObject().getLayoutHeight());
String colorStr =
(String) loading.getDomObject().getStyles().get(Constants.Name.BACKGROUND_COLOR);
String bgColor = WXUtils.getString(colorStr, null);
if (bgColor != null) {
if (!TextUtils.isEmpty(bgColor)) {
int colorInt = WXResourceUtils.getColor(bgColor);
if (!(colorInt == Color.TRANSPARENT)) {
swipeLayout.setLoadingBgColor(colorInt);
}
}
}
swipeLayout.getFooterView().setRefreshView(loading.getHostView());
}
}
}