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pengfei.zhou
234
doric-iOS/Pod/Classes/Shader/DoricSliderNode.m
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234
doric-iOS/Pod/Classes/Shader/DoricSliderNode.m
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/*
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* Copyright [2019] [Doric.Pub]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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// DoricSliderNode.m
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// Doric
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//
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// Created by pengfei.zhou on 2019/11/19.
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//
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#import <JavaScriptCore/JavaScriptCore.h>
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#import "DoricSliderNode.h"
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#import "Doric.h"
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#import "DoricSlideItemNode.h"
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@interface DoricSliderViewCell : UICollectionViewCell
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@property(nonatomic, strong) DoricSlideItemNode *doricSlideItemNode;
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@end
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@implementation DoricSliderViewCell
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@end
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@interface DoricSliderNode () <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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@property(nonatomic, copy) NSString *onPageSelectedFuncId;
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@property(nonatomic, assign) NSUInteger lastPosition;
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@property(nonatomic, copy) NSString *renderPageFuncId;
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@end
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@interface DoricSliderView : UICollectionView
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@end
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@implementation DoricSliderView
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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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@implementation DoricSliderNode
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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 [[[DoricSliderView 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:[DoricSliderViewCell 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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if ([self.renderPageFuncId isEqualToString:prop]) {
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} else {
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[self.itemViewIds removeAllObjects];
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[self clearSubModel];
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[self.view reloadData];
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self.renderPageFuncId = prop;
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}
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} else if ([@"batchCount" isEqualToString:name]) {
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self.batchCount = [prop unsignedIntegerValue];
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} else if ([@"onPageSlided" isEqualToString:name]) {
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self.onPageSelectedFuncId = prop;
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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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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
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return self.itemCount;
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}
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- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
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return CGSizeMake(self.view.width, self.view.height);
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}
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
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return 0;
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}
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
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return 0;
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}
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- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
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NSUInteger position = (NSUInteger) indexPath.row;
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NSDictionary *model = [self itemModelAt:position];
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NSDictionary *props = model[@"props"];
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DoricSliderViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"doricCell" forIndexPath:indexPath];
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if (!cell.doricSlideItemNode) {
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DoricSlideItemNode *slideItemNode = [[DoricSlideItemNode alloc] initWithContext:self.doricContext];
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[slideItemNode initWithSuperNode:self];
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cell.doricSlideItemNode = slideItemNode;
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[cell.contentView addSubview:slideItemNode.view];
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}
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DoricSlideItemNode *node = cell.doricSlideItemNode;
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node.viewId = model[@"id"];
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[node blend:props];
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CGSize size = [node.view measureSize:CGSizeMake(collectionView.width, collectionView.height)];
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[node.view layoutSelf:size];
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return cell;
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}
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- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath {
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return NO;
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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:[DoricSliderViewCell class]]) {
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DoricSlideItemNode *node = ((DoricSliderViewCell *) collectionViewCell).doricSlideItemNode;
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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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- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
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NSUInteger pageIndex = (NSUInteger) (scrollView.contentOffset.x / scrollView.width);
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scrollView.contentOffset = CGPointMake(pageIndex * scrollView.width, scrollView.contentOffset.y);
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if (self.onPageSelectedFuncId && self.onPageSelectedFuncId.length > 0) {
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if (pageIndex != self.lastPosition) {
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[self callJSResponse:self.onPageSelectedFuncId, @(pageIndex), nil];
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}
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}
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self.lastPosition = pageIndex;
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}
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- (void)slidePage:(NSDictionary *)params withPromise:(DoricPromise *)promise {
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NSUInteger pageIndex = [params[@"page"] unsignedIntegerValue];
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BOOL smooth = [params[@"smooth"] boolValue];
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[self.view setContentOffset:CGPointMake(pageIndex * self.view.width, self.view.contentOffset.y) animated:smooth];
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[promise resolve:nil];
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self.lastPosition = pageIndex;
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if (self.onPageSelectedFuncId && self.onPageSelectedFuncId.length > 0) {
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[self callJSResponse:self.onPageSelectedFuncId, @(pageIndex), nil];
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}
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}
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- (NSNumber *)getSlidedPage {
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NSUInteger pageIndex = (NSUInteger) (self.view.contentOffset.x / self.view.width);
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return @(pageIndex);
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}
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@end
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