142 lines
4.9 KiB
Objective-C
142 lines
4.9 KiB
Objective-C
//
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// Created by pengfei.zhou on 2019/11/28.
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//
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#import "DoricCollectionNode.h"
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#import "DoricCollectionItemNode.h"
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#import "DoricExtensions.h"
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#import <JavaScriptCore/JavaScriptCore.h>
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@interface DoricCollectionViewCell : UICollectionViewCell
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@property(nonatomic, strong) DoricCollectionItemNode *viewNode;
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@end
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@implementation DoricCollectionViewCell
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@end
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@interface DoricCollectionView : UICollectionView
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@end
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@implementation DoricCollectionView
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- (CGSize)sizeThatFits:(CGSize)size {
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if (self.subviews.count > 0) {
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CGFloat width = size.width;
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CGFloat height = size.height;
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for (UIView *child in self.subviews) {
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CGSize childSize = [child measureSize:size];
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width = MAX(childSize.width, width);
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height = MAX(childSize.height, height);
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}
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return CGSizeMake(width, height);
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}
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return size;
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}
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- (void)layoutSelf:(CGSize)targetSize {
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[super layoutSelf:targetSize];
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[self reloadData];
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}
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@end
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@interface DoricCollectionNode () <UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>
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@property(nonatomic, strong) NSMutableDictionary <NSNumber *, NSString *> *itemViewIds;
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@property(nonatomic, assign) NSUInteger itemCount;
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@property(nonatomic, assign) NSUInteger batchCount;
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@end
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@implementation DoricCollectionNode
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- (instancetype)initWithContext:(DoricContext *)doricContext {
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if (self = [super initWithContext:doricContext]) {
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_itemViewIds = [NSMutableDictionary new];
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_batchCount = 15;
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}
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return self;
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}
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- (UICollectionView *)build {
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UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
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[flowLayout setScrollDirection:UICollectionViewScrollDirectionHorizontal];
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return [[[DoricCollectionView alloc] initWithFrame:CGRectZero
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collectionViewLayout:flowLayout]
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also:^(UICollectionView *it) {
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it.backgroundColor = [UIColor whiteColor];
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it.pagingEnabled = YES;
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it.delegate = self;
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it.dataSource = self;
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[it registerClass:[DoricCollectionViewCell class] forCellWithReuseIdentifier:@"doricCell"];
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}];
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}
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- (void)blendView:(UICollectionView *)view forPropName:(NSString *)name propValue:(id)prop {
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if ([@"itemCount" isEqualToString:name]) {
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self.itemCount = [prop unsignedIntegerValue];
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[self.view reloadData];
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} else if ([@"renderPage" isEqualToString:name]) {
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[self.itemViewIds removeAllObjects];
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[self clearSubModel];
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[self.view reloadData];
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} else if ([@"batchCount" isEqualToString:name]) {
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self.batchCount = [prop unsignedIntegerValue];
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} else {
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[super blendView:view forPropName:name propValue:prop];
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}
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}
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- (NSDictionary *)itemModelAt:(NSUInteger)position {
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NSString *viewId = self.itemViewIds[@(position)];
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if (viewId && viewId.length > 0) {
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return [self subModelOf:viewId];
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} else {
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DoricAsyncResult *result = [self callJSResponse:@"renderBunchedItems", @(position), @(self.batchCount), nil];
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JSValue *models = [result waitUntilResult];
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NSArray *array = [models toArray];
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[array enumerateObjectsUsingBlock:^(NSDictionary *obj, NSUInteger idx, BOOL *stop) {
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NSString *thisViewId = obj[@"id"];
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[self setSubModel:obj in:thisViewId];
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NSUInteger pos = position + idx;
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self.itemViewIds[@(pos)] = thisViewId;
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}];
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return array[0];
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}
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}
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- (DoricViewNode *)subNodeWithViewId:(NSString *)viewId {
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__block DoricViewNode *ret = nil;
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[self.doricContext.driver ensureSyncInMainQueue:^{
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for (UICollectionViewCell *collectionViewCell in self.view.visibleCells) {
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if ([collectionViewCell isKindOfClass:[DoricCollectionViewCell class]]) {
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DoricCollectionItemNode *node = ((DoricCollectionViewCell *) collectionViewCell).viewNode;
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if ([viewId isEqualToString:node.viewId]) {
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ret = node;
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break;
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}
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}
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}
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}];
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return ret;
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}
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- (void)blendSubNode:(NSDictionary *)subModel {
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NSString *viewId = subModel[@"id"];
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DoricViewNode *viewNode = [self subNodeWithViewId:viewId];
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if (viewNode) {
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[viewNode blend:subModel[@"props"]];
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} else {
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NSMutableDictionary *model = [[self subModelOf:viewId] mutableCopy];
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[self recursiveMixin:subModel to:model];
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[self setSubModel:model in:viewId];
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}
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[self.itemViewIds enumerateKeysAndObjectsUsingBlock:^(NSNumber *_Nonnull key, NSString *_Nonnull obj, BOOL *_Nonnull stop) {
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if ([viewId isEqualToString:obj]) {
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*stop = YES;
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NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[key integerValue] inSection:0];
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[UIView performWithoutAnimation:^{
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[self.view reloadItemsAtIndexPaths:@[indexPath]];
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}];
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}
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}];
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}
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@end |