react-native/React/Views/RCTScrollViewManager.m
Martín Bigio 66d3f3c616 [rn] Keep native ListView child frames in sync on JS wrapper
Summary: At the moment the `ListView.js` `_childFrames` variable is only updated on scroll. As a consequence, `onChangeVisibleRows` won't get triggered for the initial render, nor any future render not trigered by scroll events. To fix this we need to make sure native and JS have the child frames in sync.
2015-07-07 07:40:56 -08:00

118 lines
3.7 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTScrollViewManager.h"
#import "RCTBridge.h"
#import "RCTScrollView.h"
#import "RCTSparseArray.h"
#import "RCTUIManager.h"
@interface RCTScrollView (Private)
- (NSArray *)calculateChildFramesData;
@end
@implementation RCTConvert (UIScrollView)
RCT_ENUM_CONVERTER(UIScrollViewKeyboardDismissMode, (@{
@"none": @(UIScrollViewKeyboardDismissModeNone),
@"on-drag": @(UIScrollViewKeyboardDismissModeOnDrag),
@"interactive": @(UIScrollViewKeyboardDismissModeInteractive),
// Backwards compatibility
@"onDrag": @(UIScrollViewKeyboardDismissModeOnDrag),
}), UIScrollViewKeyboardDismissModeNone, integerValue)
@end
@implementation RCTScrollViewManager
RCT_EXPORT_MODULE()
- (UIView *)view
{
return [[RCTScrollView alloc] initWithEventDispatcher:self.bridge.eventDispatcher];
}
RCT_EXPORT_VIEW_PROPERTY(alwaysBounceHorizontal, BOOL)
RCT_EXPORT_VIEW_PROPERTY(alwaysBounceVertical, BOOL)
RCT_EXPORT_VIEW_PROPERTY(bounces, BOOL)
RCT_EXPORT_VIEW_PROPERTY(bouncesZoom, BOOL)
RCT_EXPORT_VIEW_PROPERTY(canCancelContentTouches, BOOL)
RCT_EXPORT_VIEW_PROPERTY(centerContent, BOOL)
RCT_EXPORT_VIEW_PROPERTY(automaticallyAdjustContentInsets, BOOL)
RCT_EXPORT_VIEW_PROPERTY(decelerationRate, CGFloat)
RCT_EXPORT_VIEW_PROPERTY(directionalLockEnabled, BOOL)
RCT_EXPORT_VIEW_PROPERTY(keyboardDismissMode, UIScrollViewKeyboardDismissMode)
RCT_EXPORT_VIEW_PROPERTY(maximumZoomScale, CGFloat)
RCT_EXPORT_VIEW_PROPERTY(minimumZoomScale, CGFloat)
RCT_EXPORT_VIEW_PROPERTY(pagingEnabled, BOOL)
RCT_EXPORT_VIEW_PROPERTY(scrollEnabled, BOOL)
RCT_EXPORT_VIEW_PROPERTY(scrollsToTop, BOOL)
RCT_EXPORT_VIEW_PROPERTY(showsHorizontalScrollIndicator, BOOL)
RCT_EXPORT_VIEW_PROPERTY(showsVerticalScrollIndicator, BOOL)
RCT_EXPORT_VIEW_PROPERTY(stickyHeaderIndices, NSIndexSet)
RCT_EXPORT_VIEW_PROPERTY(scrollEventThrottle, NSTimeInterval)
RCT_EXPORT_VIEW_PROPERTY(zoomScale, CGFloat)
RCT_EXPORT_VIEW_PROPERTY(contentInset, UIEdgeInsets)
RCT_EXPORT_VIEW_PROPERTY(scrollIndicatorInsets, UIEdgeInsets)
RCT_REMAP_VIEW_PROPERTY(contentOffset, scrollView.contentOffset, CGPoint)
RCT_DEPRECATED_VIEW_PROPERTY(throttleScrollCallbackMS, scrollEventThrottle)
- (NSDictionary *)constantsToExport
{
return @{
// TODO: unused - remove these?
@"DecelerationRate": @{
@"normal": @(UIScrollViewDecelerationRateNormal),
@"fast": @(UIScrollViewDecelerationRateFast),
},
};
}
RCT_EXPORT_METHOD(getContentSize:(NSNumber *)reactTag
callback:(RCTResponseSenderBlock)callback)
{
[self.bridge.uiManager addUIBlock:^(__unused RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
UIView *view = viewRegistry[reactTag];
if (!view) {
RCTLogError(@"Cannot find view with tag #%@", reactTag);
return;
}
CGSize size = ((RCTScrollView *)view).scrollView.contentSize;
callback(@[@{
@"width" : @(size.width),
@"height" : @(size.height)
}]);
}];
}
RCT_EXPORT_METHOD(calculateChildFrames:(NSNumber *)reactTag
callback:(RCTResponseSenderBlock)callback)
{
[self.bridge.uiManager addUIBlock:^(__unused RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
UIView *view = viewRegistry[reactTag];
if (!view) {
RCTLogError(@"Cannot find view with tag #%@", reactTag);
return;
}
NSArray *childFrames = [((RCTScrollView *)view) calculateChildFramesData];
if (childFrames) {
callback(@[childFrames]);
}
}];
}
@end