+[ios] add WXRecyclerDragController
Project: http://git-wip-us.apache.org/repos/asf/incubator-weex/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-weex/commit/82416393 Tree: http://git-wip-us.apache.org/repos/asf/incubator-weex/tree/82416393 Diff: http://git-wip-us.apache.org/repos/asf/incubator-weex/diff/82416393 Branch: refs/heads/0.16-dev Commit: 824163937ecf0b882345bb179ca731e06d7a0411 Parents: ddc99cc Author: ximu <ximu...@alibaba-inc.com> Authored: Tue Aug 1 10:58:44 2017 +0800 Committer: ximu <ximu...@alibaba-inc.com> Committed: Tue Aug 1 10:58:44 2017 +0800 ---------------------------------------------------------------------- .../Recycler/WXRecyclerDragController.h | 41 ++++ .../Recycler/WXRecyclerDragController.m | 200 +++++++++++++++++++ 2 files changed, 241 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/82416393/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.h ---------------------------------------------------------------------- diff --git a/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.h b/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.h new file mode 100644 index 0000000..a5f70b7 --- /dev/null +++ b/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.h @@ -0,0 +1,41 @@ +// +// WXRecyclerDragController.h +// Pods +// +// Created by ximu on 2017/7/31. +// +// + +#import <Foundation/Foundation.h> +#import "WXSectionDataController.h" +#import "WXComponent.h" + +@class WXRecyclerDragController; + +typedef enum : NSUInteger { + WXRecyclerDragTriggerNormal, + WXRecyclerDragTriggerPan +} WXRecyclerDragTriggerType; + + +@protocol WXRecyclerDragControllerDelegate <NSObject> +- (void)dragFireEvent:(NSString *)eventName params:(NSDictionary *)params; +- (void)updateDataSource; + +@end + +@interface WXRecyclerDragController : NSObject +@property (nonatomic,weak) id<WXRecyclerDragControllerDelegate> delegate; +@property (nonatomic,weak) UICollectionView *collectionView; +@property (nonatomic, strong) UILongPressGestureRecognizer *currentLongPress; +@property (nonatomic, strong) NSIndexPath *startIndexPath; +@property (nonatomic, strong) NSIndexPath *dragingIndexPath; +@property (nonatomic, strong) NSIndexPath *targetIndexPath; +@property (nonatomic, strong) NSMutableArray *excludedAry; +@property (nonatomic, strong) UICollectionViewCell *dragingCell; +@property (nonatomic, assign) BOOL isDragable; +@property (nonatomic, assign) BOOL isDragAnchor; +@property (nonatomic, assign) WXRecyclerDragTriggerType dragTriggerType; + +- (void)goThroughAnchor:(WXComponent *)wxComponent indexPath:(NSIndexPath *)indexPath; +@end http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/82416393/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.m ---------------------------------------------------------------------- diff --git a/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.m b/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.m new file mode 100644 index 0000000..b3939c0 --- /dev/null +++ b/ios/sdk/WeexSDK/Sources/Component/Recycler/WXRecyclerDragController.m @@ -0,0 +1,200 @@ +// +// WXRecyclerDragController.m +// Pods +// +// Created by ximu on 2017/7/31. +// +// + +#import "WXRecyclerDragController.h" + + +@implementation WXRecyclerDragController + +- (instancetype)init{ + self = [super init]; + if (self) { + _excludedAry = [[NSMutableArray alloc] init]; + _isDragAnchor = NO; + + } + return self; +} + +- (void)setCollectionView:(UICollectionView *)collectionView{ + _collectionView = collectionView; + _currentLongPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressMethod:)]; + _currentLongPress.minimumPressDuration = 0.3f; + [_collectionView addGestureRecognizer:_currentLongPress]; +} + +- (void)setDragingCell:(UICollectionViewCell *)dragingCell{ + _dragingCell = dragingCell; + _dragingCell.hidden = true; + [_collectionView addSubview:_dragingCell]; +} + + +- (void)goThroughAnchor:(WXComponent *)wxComponent indexPath:(NSIndexPath *)indexPath{ + if (wxComponent.attributes && [wxComponent.attributes[@"dragExcluded"] boolValue]){ + [_excludedAry addObject:indexPath]; + NSSet *set = [NSSet setWithArray:_excludedAry]; + [_excludedAry removeAllObjects]; + [_excludedAry addObjectsFromArray:[set allObjects]]; + } + + //éåè·åéç¹ + NSMutableArray *subviewComponents = [[NSMutableArray alloc] init]; + [subviewComponents addObjectsFromArray:wxComponent.subcomponents]; + WXComponent *anchorComponent; + for (int i = 0 ; i < subviewComponents.count ; i++){ + WXComponent *compoent = subviewComponents[i]; + if (compoent.attributes[@"dragAnchor"]) { + anchorComponent = compoent; + _isDragAnchor = YES; + break; + } + + if (compoent.subcomponents && compoent.subcomponents.count && compoent.subcomponents.count > 0) { + [subviewComponents addObjectsFromArray:compoent.subcomponents]; + } + } + + if (anchorComponent) { + //å»é¤å ¨å±UILongPressGestureRecognizeræå¿ + if (_currentLongPress) { + [self.collectionView removeGestureRecognizer:_currentLongPress]; + _currentLongPress = nil; + } + + //æ·»å éç¹çæå¿ + if (_dragTriggerType == WXRecyclerDragTriggerPan) { + UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(longPressMethod:)]; + [anchorComponent.view addGestureRecognizer:panGestureRecognizer]; + + }else{ + UILongPressGestureRecognizer *longPressGestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressMethod:)]; + [anchorComponent.view addGestureRecognizer:longPressGestureRecognizer]; + } + } +} + +#pragma mark - dragMethod +- (void)longPressMethod:(UILongPressGestureRecognizer*)gesture +{ + if (_isDragable) { + switch (gesture.state) { + case UIGestureRecognizerStateBegan: + [self dragBegin:gesture]; + break; + case UIGestureRecognizerStateChanged: + [self dragChanged:gesture]; + break; + case UIGestureRecognizerStateEnded: + [self dragEnd:gesture]; + break; + default: + break; + } + } +} + +- (void)dragBegin:(UILongPressGestureRecognizer *)gesture{ + + CGPoint point = [gesture locationInView:_collectionView]; + + _startIndexPath = [self getDragingIndexPathWithPoint:point]; + if (!_startIndexPath) { + return; + } + + if ([self.delegate respondsToSelector:@selector(fireEvent:params:)]) { + [self.delegate dragFireEvent:@"dragstart" params:@{@"fromIndex":[NSString stringWithFormat:@"%ld",(long)_startIndexPath.row]}]; + } + + _dragingIndexPath = [self getDragingIndexPathWithPoint:point]; + if (!_dragingIndexPath) { + return; + } + + [_collectionView bringSubviewToFront:_dragingCell]; + _dragingCell.frame = [_collectionView cellForItemAtIndexPath:_dragingIndexPath].frame; + _dragingCell.hidden = false; + [UIView animateWithDuration:0.3 animations:^{ + [_dragingCell setTransform:CGAffineTransformMakeScale(1.2, 1.2)]; + }]; +} + +- (void)dragChanged:(UILongPressGestureRecognizer *)gesture{ + + if (!_startIndexPath) { + return; + } + CGPoint point = [gesture locationInView:_collectionView]; + _dragingCell.center = point; + _targetIndexPath = [self getTargetIndexPathWithPoint:point]; + + if (_targetIndexPath && _dragingIndexPath && (_targetIndexPath.section == _startIndexPath.section)){ + [_collectionView moveItemAtIndexPath:_dragingIndexPath toIndexPath:_targetIndexPath]; + _dragingIndexPath = _targetIndexPath; + } +} + +- (void)dragEnd:(UILongPressGestureRecognizer *)gesture{ + + if (!_startIndexPath || !_dragingIndexPath) { + return; + } + if ([self.delegate respondsToSelector:@selector(fireEvent:params:)]) { + [self.delegate dragFireEvent:@"dragend" params:@{@"toIndex":[NSString stringWithFormat:@"%ld",(long)_dragingIndexPath.row],@"fromIndex":[NSString stringWithFormat:@"%ld",(long)_startIndexPath.row]}]; + } + + CGRect endFrame = [_collectionView cellForItemAtIndexPath:_dragingIndexPath].frame; + + __weak typeof(self) weakSelf = self; + [UIView animateWithDuration:0.3 animations:^{ + [weakSelf.dragingCell setTransform:CGAffineTransformMakeScale(1.0, 1.0)]; + weakSelf.dragingCell.frame = endFrame; + } completion:^(BOOL finished) { + weakSelf.dragingCell.hidden = YES; + if ([weakSelf.delegate respondsToSelector:@selector(updateDataSource)]) { + [weakSelf.delegate updateDataSource]; + } + + }]; +} + +- (NSIndexPath *)getDragingIndexPathWithPoint:(CGPoint)point{ + NSIndexPath *dragingIndexPath = nil; + for (NSIndexPath *indexPath in [_collectionView indexPathsForVisibleItems]){ + if (CGRectContainsPoint([_collectionView cellForItemAtIndexPath:indexPath].frame,point)) { + dragingIndexPath = indexPath; + break; + } + } + + BOOL isExcluded = NO; + if (dragingIndexPath) { + for (NSIndexPath *indexPath in _excludedAry) { + if (indexPath.row == dragingIndexPath.row) { + isExcluded = YES; + } + } + } + return isExcluded?nil:dragingIndexPath; +} + +- (NSIndexPath *)getTargetIndexPathWithPoint:(CGPoint)point{ + NSIndexPath *targetIndexPath = nil; + for (NSIndexPath *indexPath in _collectionView.indexPathsForVisibleItems) { + if (CGRectContainsPoint([_collectionView cellForItemAtIndexPath:indexPath].frame, point)) { + targetIndexPath = indexPath; + } + } + return targetIndexPath; +} + +- (void)dealloc{ + +} +@end
