542 lines
20 KiB
Objective-C
542 lines
20 KiB
Objective-C
/*
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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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#import "DoricSliderLayout.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 propItemCount;
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@property(nonatomic, assign) NSUInteger batchCount;
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@property(nonatomic, assign) NSUInteger slidePosition;
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@property(nonatomic, copy) NSString *onPageSelectedFuncId;
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@property(nonatomic, assign) BOOL loop;
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@property(nonatomic, assign) BOOL propLoop;
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@property(nonatomic, assign) NSUInteger lastPosition;
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@property(nonatomic, copy) NSString *renderPageFuncId;
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@property(nonatomic, copy) NSString *propRenderPageFuncId;
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@property(nonatomic, assign) BOOL needResetScroll;
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@property(nonatomic, strong) NSString *slideStyle;
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@property(nonatomic, assign) CGFloat minScale;
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@property(nonatomic, assign) CGFloat maxScale;
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@property(nonatomic, assign) CGFloat galleryMinScale;
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@property(nonatomic, assign) CGFloat galleryMinAlpha;
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@property(nonatomic, assign) CGFloat galleryItemWidth;
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@property(nonatomic, assign) BOOL scheduledLayout;
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@property (nonatomic, assign) NSInteger currentPage;
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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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CGSize result = [super sizeThatFits:size];
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if (self.doricLayout.heightSpec == DoricLayoutFit && self.contentSize.height > 0) {
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return CGSizeMake(result.width, self.contentSize.height);
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}
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return result;
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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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_minScale = .618f;
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_maxScale = 1.f;
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}
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return self;
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}
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- (UICollectionView *)build {
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DoricSliderLayout *flowLayout = [[DoricSliderLayout 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.showsHorizontalScrollIndicator = NO;
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it.showsVerticalScrollIndicator = NO;
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[it registerClass:[DoricSliderViewCell class] forCellWithReuseIdentifier:@"doricCell"];
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if (@available(iOS 11, *)) {
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it.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
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}
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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 ([@"scrollable" isEqualToString:name]) {
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self.view.scrollEnabled = [prop boolValue];
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} else if ([@"itemCount" isEqualToString:name]) {
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self.propItemCount = [prop unsignedIntegerValue];
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} else if ([@"renderPage" isEqualToString:name]) {
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self.propRenderPageFuncId = prop;
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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 if ([@"loop" isEqualToString:name]) {
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self.propLoop = [prop boolValue];
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} else if ([@"bounces" isEqualToString:name]) {
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self.view.bounces = [prop boolValue];
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} else if ([@"scrollsToTop" isEqualToString:name]) {
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self.view.scrollsToTop = [prop boolValue];
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} else if ([@"slideStyle" isEqualToString:name]) {
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if ([prop isKindOfClass:NSDictionary.class]) {
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self.slideStyle = prop[@"type"];
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if ([self.slideStyle isEqualToString:@"zoomOut"]) {
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self.maxScale = [prop[@"maxScale"] floatValue];
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self.minScale = [prop[@"minScale"] floatValue];
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} else if([self.slideStyle isEqualToString:@"gallery"]) {
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self.galleryMinScale = [prop[@"minScale"] floatValue];
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self.galleryMinAlpha = [prop[@"minAlpha"] floatValue];
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self.galleryItemWidth = [prop[@"itemWidth"] floatValue];
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self.view.pagingEnabled = NO;
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DoricSliderLayout *layout = (DoricSliderLayout*)self.view.collectionViewLayout;
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layout.galleryItemWidth = self.galleryItemWidth;
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layout.galleryMinScale = self.galleryMinScale;
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layout.galleryMinAlpha = self.galleryMinAlpha;
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layout.enableGallery = YES;
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}
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} else if ([prop isKindOfClass:NSString.class]) {
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self.slideStyle = prop;
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}
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} else if ([@"slidePosition" isEqualToString:name]) {
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self.slidePosition = [prop unsignedIntegerValue];
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if (self.view.width > 0 && ((NSUInteger) self.view.contentOffset.x / self.view.width) == self.slidePosition) {
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} else {
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self.needResetScroll = YES;
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}
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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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- (void)afterBlended:(NSDictionary *)props {
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bool needToScroll = (self.propLoop && !self.loop)
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|| (![self.renderPageFuncId isEqualToString:self.propRenderPageFuncId])
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|| (self.itemCount == 0 && self.propItemCount > 0)
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|| self.needResetScroll;
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// handle item count
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if (self.itemCount != self.propItemCount) {
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self.itemCount = self.propItemCount;
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[self.view reloadData];
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}
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// handle render page
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if ([self.renderPageFuncId isEqualToString:self.propRenderPageFuncId]) {
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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 = self.propRenderPageFuncId;
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}
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// handle loop
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self.loop = self.propLoop;
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__weak typeof(self) _self = self;
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if (needToScroll) {
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dispatch_async(dispatch_get_main_queue(), ^{
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__strong typeof(_self) self = _self;
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[self.view reloadData];
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NSUInteger position = (self.loop ? 1 : 0) + self.slidePosition;
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float itemWidth;
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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itemWidth = self.galleryItemWidth;
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} else {
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itemWidth = self.view.width;
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}
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if (itemWidth == 0) {
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self.needResetScroll = true;
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} else {
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self.needResetScroll = false;
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[self.view setContentOffset:CGPointMake(position * itemWidth, self.view.contentOffset.y) animated:false];
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}
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});
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}
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}
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
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if (self.loop && self.itemCount > 0) {
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return self.itemCount + 2;
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} else {
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return self.itemCount;
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}
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}
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- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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UICollectionViewFlowLayout *layout = (UICollectionViewFlowLayout *)self.view.collectionViewLayout;
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int margin = (self.view.width - self.galleryItemWidth) / 2;
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layout.sectionInset = UIEdgeInsetsMake(0, margin, 0, margin);
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return CGSizeMake(self.galleryItemWidth, self.view.height);
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}
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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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@try {
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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 *) [DoricViewNode create:self.doricContext withType:@"SlideItem"];
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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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} else {
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[cell.doricSlideItemNode reset];
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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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CGFloat maxWidth;
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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maxWidth = self.galleryItemWidth;
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} else {
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maxWidth = collectionView.width;
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}
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if (collectionView.doricLayout.widthSpec == DoricLayoutFit) {
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maxWidth = [[UIScreen mainScreen] bounds].size.width;
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}
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CGFloat maxHeight = collectionView.height;
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if (collectionView.doricLayout.heightSpec == DoricLayoutFit) {
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maxHeight = [[UIScreen mainScreen] bounds].size.height;
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}
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[node.view.doricLayout apply:CGSizeMake(maxWidth, maxHeight)];
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[node requestLayout];
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BOOL needLayout = NO;
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if (collectionView.doricLayout.widthSpec == DoricLayoutFit && collectionView.width < node.view.width) {
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self.view.width = node.view.width;
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needLayout = YES;
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}
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if (collectionView.doricLayout.heightSpec == DoricLayoutFit && collectionView.height < node.view.height) {
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collectionView.height = node.view.height;
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needLayout = YES;
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}
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if (needLayout) {
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[self scheduleLayout];
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}
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return cell;
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} @catch (NSException *exception) {
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[self.doricContext.driver.registry onException:exception inContext:self.doricContext];
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return nil;
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}
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}
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- (void)scheduleLayout {
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if (self.scheduledLayout) {
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return;
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}
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self.scheduledLayout = YES;
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dispatch_async(dispatch_get_main_queue(), ^{
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self.scheduledLayout = NO;
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DoricSuperNode *node = self.superNode;
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while (node.superNode != nil) {
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if ([node.view isKindOfClass:UITableView.class]) {
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UITableView *tableView = (UITableView *) node.view;
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[tableView reloadData];
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return;
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}
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node = node.superNode;
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}
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[node requestLayout];
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[self.view reloadData];
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});
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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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NSUInteger index;
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if (self.loop) {
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if (position == 0) {
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index = self.itemCount - 1;
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} else if (position == self.itemCount + 1) {
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index = 0;
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} else {
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index = position - 1;
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}
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} else {
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index = position;
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}
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NSString *viewId = self.itemViewIds[@(index)];
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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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NSInteger batchCount = self.batchCount;
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NSInteger start = position;
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while (start > 0 && self.itemViewIds[@(start - 1)] == nil) {
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start--;
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batchCount++;
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}
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DoricAsyncResult *result = [self pureCallJSResponse:@"renderBunchedItems", @(start), @(batchCount), nil];
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NSArray *array = [result waitUntilResult:^(JSValue *models) {
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return [models toArray];
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}];
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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 = start + idx;
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self.itemViewIds[@(pos)] = thisViewId;
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}];
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viewId = self.itemViewIds[@(position)];
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return viewId && viewId.length > 0 ? [self subModelOf:viewId] : nil;
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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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BOOL skipReload = NO;
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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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if (viewNode) {
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CGSize originSize = viewNode.view.frame.size;
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[viewNode blend:subModel[@"props"]];
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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[viewNode.view.doricLayout apply:CGSizeMake(self.galleryItemWidth, self.view.height)];
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} else {
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[viewNode.view.doricLayout apply:CGSizeMake(self.view.width, self.view.height)];
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}
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[viewNode requestLayout];
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if (CGSizeEqualToSize(originSize, viewNode.view.frame.size)) {
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skipReload = YES;
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}
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}
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if (skipReload) {
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return;
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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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//paging by cell | paging with one cell at a time
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- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
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{
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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CGFloat cellWidth = self.galleryItemWidth;
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self.currentPage = (scrollView.contentOffset.x - cellWidth / 2) / (cellWidth) + 1;
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}
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}
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- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
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{
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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CGFloat cellWidth = self.galleryItemWidth;
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NSInteger page = (scrollView.contentOffset.x - cellWidth / 2) / (cellWidth) + 1;
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if (velocity.x > 0) page++;
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if (velocity.x < 0) page--;
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page = MAX(page, 0);
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NSInteger prePage = self.currentPage - 1;
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if(prePage > 0 && page < prePage){
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page = prePage;
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} else if (page > self.currentPage + 1){
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page = self.currentPage + 1;
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}
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self.currentPage = page;
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CGFloat newOffset = page * (cellWidth);
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targetContentOffset->x = newOffset;
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}
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}
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
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if ([self.slideStyle isEqualToString:@"zoomOut"]) {
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CGFloat centerX = scrollView.width / 2.f;
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[self.view.visibleCells forEach:^(__kindof UICollectionViewCell *obj) {
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CGFloat vCenterX = obj.centerX - scrollView.contentOffset.x;
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CGFloat percent = ABS(vCenterX - centerX) / centerX;
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CGFloat scale = self.maxScale - (self.maxScale - self.minScale) * percent;
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obj.transform = CGAffineTransformScale(CGAffineTransformIdentity, scale, scale);
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obj.layer.anchorPoint = CGPointMake(0.5f, 0.5f);
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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;
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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pageIndex = (NSUInteger) (scrollView.contentOffset.x / self.galleryItemWidth);
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scrollView.contentOffset = CGPointMake(pageIndex * self.galleryItemWidth, scrollView.contentOffset.y);
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} else {
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pageIndex = (NSUInteger) (scrollView.contentOffset.x / scrollView.width);
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scrollView.contentOffset = CGPointMake(pageIndex * scrollView.width, scrollView.contentOffset.y);
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}
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if (self.loop) {
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float itemWidth;
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if ([self.slideStyle isEqualToString:@"gallery"]) {
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itemWidth = self.galleryItemWidth;
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} else {
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itemWidth = self.view.width;
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}
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if (pageIndex == 0) {
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[self.view setContentOffset:CGPointMake(self.itemCount * itemWidth, self.view.contentOffset.y) animated:false];
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pageIndex = self.itemCount - 1;
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} else if (pageIndex == self.itemCount + 1) {
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[self.view setContentOffset:CGPointMake(1 * itemWidth, self.view.contentOffset.y) animated:false];
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pageIndex = 0;
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} else {
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pageIndex = pageIndex - 1;
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}
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}
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if (self.onPageSelectedFuncId && self.onPageSelectedFuncId.length > 0) {
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if (pageIndex != self.lastPosition) {
|
|
[self callJSResponse:self.onPageSelectedFuncId, @(pageIndex), nil];
|
|
}
|
|
}
|
|
self.lastPosition = pageIndex;
|
|
}
|
|
|
|
- (void)slidePage:(NSDictionary *)params withPromise:(DoricPromise *)promise {
|
|
NSUInteger pageIndex = [params[@"page"] unsignedIntegerValue];
|
|
BOOL smooth = [params[@"smooth"] boolValue];
|
|
|
|
float itemWidth;
|
|
if ([self.slideStyle isEqualToString:@"gallery"]) {
|
|
itemWidth = self.galleryItemWidth;
|
|
} else {
|
|
itemWidth = self.view.width;
|
|
}
|
|
|
|
if (self.loop) {
|
|
[self.view setContentOffset:CGPointMake((pageIndex + 1) * itemWidth, self.view.contentOffset.y) animated:smooth];
|
|
} else {
|
|
[self.view setContentOffset:CGPointMake(pageIndex * itemWidth, self.view.contentOffset.y) animated:smooth];
|
|
}
|
|
|
|
[promise resolve:nil];
|
|
self.lastPosition = pageIndex;
|
|
if (self.onPageSelectedFuncId && self.onPageSelectedFuncId.length > 0) {
|
|
[self callJSResponse:self.onPageSelectedFuncId, @(pageIndex), nil];
|
|
}
|
|
}
|
|
|
|
- (NSNumber *)getSlidedPage {
|
|
NSUInteger pageIndex;
|
|
if ([self.slideStyle isEqualToString:@"gallery"]) {
|
|
pageIndex = (NSUInteger) (self.view.contentOffset.x / self.galleryItemWidth);
|
|
} else {
|
|
pageIndex = (NSUInteger) (self.view.contentOffset.x / self.view.width);
|
|
}
|
|
|
|
if (self.loop) {
|
|
return @(pageIndex - 1);
|
|
} else {
|
|
return @(pageIndex);
|
|
}
|
|
}
|
|
|
|
- (void)reset {
|
|
[super reset];
|
|
self.view.scrollEnabled = YES;
|
|
self.onPageSelectedFuncId = nil;
|
|
self.propRenderPageFuncId = nil;
|
|
self.renderPageFuncId = nil;
|
|
self.slideStyle = nil;
|
|
self.minScale = .618f;
|
|
self.maxScale = 1.f;
|
|
self.slidePosition = 0;
|
|
}
|
|
|
|
- (void)subNodeContentChanged:(DoricViewNode *)subNode {
|
|
[subNode.view.doricLayout apply];
|
|
[super subNodeContentChanged:subNode];
|
|
}
|
|
|
|
- (void)reload {
|
|
[self.itemViewIds removeAllObjects];
|
|
[self clearSubModel];
|
|
dispatch_async(dispatch_get_main_queue(), ^{
|
|
[self.view reloadData];
|
|
});
|
|
}
|
|
@end
|