mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
f379b1e583
Summary: This replaces the internal core implementation of `setState` with the new `updateStateWithAutorepeat` which is now the only option. In short, `updateStateWithAutorepeat` works as `setState` with the following features: * The state update might be performed several times until it succeeds. * The callback is being called on every retry with actual previous data provided (can be different on every call). * In case of a static value is provided (simple case, not lambda, the only case on Android for now), the same *new*/provided value will be used for all state updates. In this case, the state update cannot fail. * If a callback is provided, the update operation can be canceled via returning `nullptr` from the callback. This diff removes all mentions of the previous state update approach from the core; some other leftovers will be removed separatly. Changelog: [Internal] Fabric-specific internal change. Reviewed By: sammy-SC Differential Revision: D25695600 fbshipit-source-id: 14b3d4bad7ee69e024a9b0b9fc018f7d58bf060c
112 lines
2.9 KiB
Plaintext
112 lines
2.9 KiB
Plaintext
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "RCTSafeAreaViewComponentView.h"
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#import <React/RCTUtils.h>
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#import <react/renderer/components/safeareaview/SafeAreaViewComponentDescriptor.h>
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#import <react/renderer/components/safeareaview/SafeAreaViewState.h>
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#import "RCTConversions.h"
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#import "RCTFabricComponentsPlugins.h"
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using namespace facebook::react;
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@implementation RCTSafeAreaViewComponentView {
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SafeAreaViewShadowNode::ConcreteState::Shared _state;
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}
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- (instancetype)initWithFrame:(CGRect)frame
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{
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if (self = [super initWithFrame:frame]) {
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static auto const defaultProps = std::make_shared<SafeAreaViewProps const>();
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_props = defaultProps;
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self.clipsToBounds = YES;
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}
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return self;
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}
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- (UIEdgeInsets)_safeAreaInsets
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{
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if (@available(iOS 11.0, *)) {
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return self.safeAreaInsets;
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}
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return UIEdgeInsetsZero;
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}
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- (void)safeAreaInsetsDidChange
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{
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[super safeAreaInsetsDidChange];
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[self _updateStateIfNecessary];
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}
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- (void)_updateStateIfNecessary
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{
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if (!_state) {
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return;
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}
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UIEdgeInsets insets = [self _safeAreaInsets];
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insets.left = RCTRoundPixelValue(insets.left);
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insets.top = RCTRoundPixelValue(insets.top);
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insets.right = RCTRoundPixelValue(insets.right);
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insets.bottom = RCTRoundPixelValue(insets.bottom);
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auto newPadding = RCTEdgeInsetsFromUIEdgeInsets(insets);
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auto threshold = 1.0 / RCTScreenScale() + 0.01; // Size of a pixel plus some small threshold.
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_state->updateState(
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[=](SafeAreaViewShadowNode::ConcreteState::Data const &oldData)
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-> SafeAreaViewShadowNode::ConcreteState::SharedData {
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auto oldPadding = oldData.padding;
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auto deltaPadding = newPadding - oldPadding;
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if (std::abs(deltaPadding.left) < threshold && std::abs(deltaPadding.top) < threshold &&
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std::abs(deltaPadding.right) < threshold && std::abs(deltaPadding.bottom) < threshold) {
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return nullptr;
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}
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auto newData = oldData;
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newData.padding = newPadding;
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return std::make_shared<SafeAreaViewShadowNode::ConcreteState::Data const>(newData);
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});
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}
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#pragma mark - RCTComponentViewProtocol
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+ (ComponentDescriptorProvider)componentDescriptorProvider
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{
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return concreteComponentDescriptorProvider<SafeAreaViewComponentDescriptor>();
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}
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- (void)updateState:(facebook::react::State::Shared const &)state
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oldState:(facebook::react::State::Shared const &)oldState
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{
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_state = std::static_pointer_cast<SafeAreaViewShadowNode::ConcreteState const>(state);
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}
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- (void)finalizeUpdates:(RNComponentViewUpdateMask)updateMask
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{
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[super finalizeUpdates:updateMask];
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[self _updateStateIfNecessary];
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}
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- (void)prepareForRecycle
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{
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[super prepareForRecycle];
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_state.reset();
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}
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@end
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Class<RCTComponentViewProtocol> RCTSafeAreaViewCls(void)
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{
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return RCTSafeAreaViewComponentView.class;
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}
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