Function getFilteredItems

nodeImage.js:2704–2746

获取经过分类筛选 + 置顶排序后的图片列表

()

            /** 获取经过分类筛选 + 置顶排序后的图片列表 */
            function getFilteredItems() {
                var items = galleryAllItems;
                var imgCatMap = niGetImgCatMap();
                var pinnedIds = niGetPinnedIds();

                // 按分类筛选
                if (currentCatFilter === 'pinned') {
                    items = items.filter(function (it) {
                        var pid = pickId(it);
                        var u = pickUrl(it);
                        var id = pid || extractIdFromCdnUrl(u);
                        return id && pinnedIds.indexOf(id) >= 0;
                    });
                } else if (currentCatFilter && currentCatFilter !== 'all') {
                    items = items.filter(function (it) {
                        var pid = pickId(it);
                        var u = pickUrl(it);
                        var id = pid || extractIdFromCdnUrl(u);
                        return id && imgCatMap[id] === currentCatFilter;
                    });
                }

                // 置顶排前：置顶图片排在前面，非置顶保持原序
                items = items.slice().sort(function (a, b) {
                    var pidA = pickId(a);
                    var uA = pickUrl(a);
                    var idA = pidA || extractIdFromCdnUrl(uA);
                    var pidB = pickId(b);
                    var uB = pickUrl(b);
                    var idB = pidB || extractIdFromCdnUrl(uB);
                    var pinA = idA && pinnedIds.indexOf(idA) >= 0 ? 0 : 1;
                    var pinB = idB && pinnedIds.indexOf(idB) >= 0 ? 0 : 1;
                    if (pinA !== pinB) return pinA - pinB;
                    // 同为置顶的按置顶顺序
                    if (pinA === 0) {
                        var idxA = pinnedIds.indexOf(idA);
                        var idxB = pinnedIds.indexOf(idB);
                        return idxA - idxB;
                    }
                    return 0;
                });
                return items;
            }

            var filtered = getFilteredItems();
            var total = filtered.length;