Examples with CardLoadSupport com.tmall.wireless.tangram3.support.async.CardLoadSupport used on opensource projects

Example 1 with CardLoadSupport

use of com.tmall.wireless.tangram3.support.async.CardLoadSupport in project Tangram-Android by alibaba.

the class TangramEngine method loadFirstPageCard.

/**
 * Loading data for card whose's position in within 0 to {{@link #mPreLoadNumber}}.
 */
public void loadFirstPageCard() {
    if (!mEnableLoadFirstPageCard) {
        return;
    }
    final CardLoadSupport loadSupport = getService(CardLoadSupport.class);
    if (loadSupport == null) {
        return;
    }
    boolean loadedMore = false;
    List<Card> cards = mGroupBasicAdapter.getGroups();
    for (int i = 0; i < Math.min(mPreLoadNumber, cards.size()); i++) {
        Card card = cards.get(i);
        if (!TextUtils.isEmpty(card.load) && !card.loaded) {
            // page load
            if (card.loadMore && !loadedMore) {
                // only load one load more card
                loadSupport.loadMore(card);
                loadSupport.reactiveDoLoadMore(card);
                loadedMore = true;
            } else {
                loadSupport.doLoad(card);
                loadSupport.reactiveDoLoad(card);
            }
            card.loaded = true;
        }
    }
}

Example 2 with CardLoadSupport

use of com.tmall.wireless.tangram3.support.async.CardLoadSupport in project Tangram-Android by alibaba.

the class TangramEngine method loadMoreCard.

public void loadMoreCard() {
    CardLoadSupport loadSupport = getService(CardLoadSupport.class);
    if (loadSupport == null) {
        return;
    }
    List<Card> groups = findGroups(new Predicate<Card>() {

        @Override
        public boolean isMatch(Card data) {
            return data.loadMore && data.hasMore && !data.loading && !TextUtils.isEmpty(data.load);
        }
    });
    if (groups.size() != 0) {
        loadSupport.loadMore(groups.get(groups.size() - 1));
        loadSupport.reactiveDoLoadMore(groups.get(groups.size() - 1));
    }
}

Example 3 with CardLoadSupport

use of com.tmall.wireless.tangram3.support.async.CardLoadSupport in project Tangram-Android by alibaba.

the class TangramEngine method onScrolled.

/**
 * Call this method in RecyclerView's scroll listener. Would trigger the preload of card's data.
 */
public void onScrolled() {
    // due to a bug in 21: https://code.google.com/p/android/issues/detail?id=162753, which cause getDecoratedStart() throws NullPointException
    // officially reported it has been fixed in v22
    final int lastPosition = getLayoutManager().findLastVisibleItemPosition();
    final int firstPosition = getLayoutManager().findFirstVisibleItemPosition();
    int lastCardIndex = -1;
    int firstCardIndex = -1;
    int position = lastPosition;
    // find the last visible item in card
    for (int i = lastPosition; i >= firstPosition; i--) {
        lastCardIndex = mGroupBasicAdapter.findCardIdxFor(i);
        if (lastCardIndex >= 0) {
            position = i;
            break;
        }
    }
    for (int i = firstCardIndex; i <= lastPosition; i++) {
        firstCardIndex = mGroupBasicAdapter.findCardIdxFor(i);
        if (firstCardIndex >= 0) {
            break;
        }
    }
    if (lastCardIndex < 0 || firstCardIndex < 0)
        return;
    final CardLoadSupport loadSupport = getService(CardLoadSupport.class);
    if (loadSupport == null)
        return;
    List<Card> cards = mGroupBasicAdapter.getGroups();
    // check the loadmore state of current card first  range is inclusive-exclusive
    Card current = cards.get(lastCardIndex);
    Pair<Range<Integer>, Card> pair = mGroupBasicAdapter.getCardRange(lastCardIndex);
    if (pair != null && position >= pair.first.getUpper() - mPreLoadNumber) {
        // async load
        if (!TextUtils.isEmpty(current.load) && current.loaded) {
            // page load
            if (current.loadMore) {
                loadSupport.loadMore(current);
                loadSupport.reactiveDoLoadMore(current);
            }
            return;
        }
    }
    boolean loadedMore = false;
    for (int i = firstCardIndex; i < Math.min(lastCardIndex + mPreLoadNumber, cards.size()); i++) {
        Card c = cards.get(i);
        // async load
        if (!TextUtils.isEmpty(c.load) && !c.loaded) {
            // page load
            if (c.loadMore && !loadedMore) {
                // only load one load more card
                loadSupport.loadMore(c);
                loadSupport.reactiveDoLoadMore(c);
                loadedMore = true;
            } else {
                loadSupport.doLoad(c);
                loadSupport.reactiveDoLoad(c);
            }
            c.loaded = true;
        }
    }
    if (mEnableAutoLoadMore && mGroupBasicAdapter.getItemCount() - position < mPreLoadNumber) {
        loadMoreCard();
    }
}