mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
3d166a0a4c
Summary: It is the correct way to deal with the measure function. I believe it can fix the crash we see with TextInput state update. The crash is probably caused by invalid value of `shadowNodeRawPtr` in `YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector`. It's hard to reconstruct the full chain of events but I think it's related: Yoga's dirty flag influences cloning, so the improper setting of this flag can misalign "natural" ShadowNode cloning (influenced by changes in the tree) and YGNode-initiated cloning (triggered by layout process). Changelog: [Internal] Fabric-specific internal change. Reviewed By: sammy-SC Differential Revision: D25937710 fbshipit-source-id: a4e7c9dd8f5e6598fc662f4c6ee8061fd795e20d
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*
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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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#pragma once
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#include <react/renderer/attributedstring/AttributedString.h>
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#include <react/renderer/components/iostextinput/TextInputEventEmitter.h>
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#include <react/renderer/components/iostextinput/TextInputProps.h>
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#include <react/renderer/components/iostextinput/TextInputState.h>
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#include <react/renderer/components/text/BaseTextShadowNode.h>
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#include <react/renderer/components/view/ConcreteViewShadowNode.h>
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#include <react/renderer/textlayoutmanager/TextLayoutManager.h>
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#include <react/utils/ContextContainer.h>
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namespace facebook {
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namespace react {
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extern const char TextInputComponentName[];
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/*
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* `ShadowNode` for <TextInput> component.
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*/
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class TextInputShadowNode : public ConcreteViewShadowNode<
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TextInputComponentName,
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TextInputProps,
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TextInputEventEmitter,
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TextInputState>,
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public BaseTextShadowNode {
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public:
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using ConcreteViewShadowNode::ConcreteViewShadowNode;
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static ShadowNodeTraits BaseTraits() {
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auto traits = ConcreteViewShadowNode::BaseTraits();
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traits.set(ShadowNodeTraits::Trait::TextKind);
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traits.set(ShadowNodeTraits::Trait::LeafYogaNode);
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traits.set(ShadowNodeTraits::Trait::MeasurableYogaNode);
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return traits;
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}
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/*
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* Associates a shared `TextLayoutManager` with the node.
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* `TextInputShadowNode` uses the manager to measure text content
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* and construct `TextInputState` objects.
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*/
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void setTextLayoutManager(TextLayoutManager::Shared const &textLayoutManager);
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#pragma mark - LayoutableShadowNode
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Size measureContent(
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LayoutContext const &layoutContext,
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LayoutConstraints const &layoutConstraints) const override;
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void layout(LayoutContext layoutContext) override;
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private:
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/*
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* Creates a `State` object if needed.
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*/
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void updateStateIfNeeded(LayoutContext const &layoutContext);
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/*
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* Returns a `AttributedString` which represents text content of the node.
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*/
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AttributedString getAttributedString(
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LayoutContext const &layoutContext) const;
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/*
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* Returns an `AttributedStringBox` which represents text content that should
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* be used for measuring purposes. It might contain actual text value,
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* placeholder value or some character that represents the size of the font.
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*/
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AttributedStringBox attributedStringBoxToMeasure(
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LayoutContext const &layoutContext) const;
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TextLayoutManager::Shared textLayoutManager_;
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};
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} // namespace react
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} // namespace facebook
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