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https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Denis Koroskin
3d6464d0e1
Summary: RootFlatShadowNode always mounts to a (top-level) View but was never marked as one that mounts to a View. This diff fixes it. Nothing in the code relied on it being marked as mounting to a View, so it worked fine. A follow up path that implements UIImplementation.measure() for nodes that don't mount to a View goes up until it finds first mounting node, and it was crashing with NPE because it tried to access RootFlatShadowNode's parent (and there isn't one). Reviewed By: sriramramani Differential Revision: D2800818
48 lines
1.4 KiB
Java
48 lines
1.4 KiB
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.facebook.react.flat;
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/**
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* Root node of the shadow node hierarchy. Currently, the only node that can actually map to a View.
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*/
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/* package */ final class FlatRootShadowNode extends FlatShadowNode {
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/* package */ FlatRootShadowNode() {
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forceMountToView();
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signalBackingViewIsCreated();
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}
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private boolean mIsUpdated;
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/**
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* Returns true when this CSSNode tree needs to be re-laid out. If true, FlatUIImplementation
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* will request LayoutEngine to perform a layout pass to update node boundaries. This is used
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* to avoid unnecessary node updates.
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*/
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/* package */ boolean needsLayout() {
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return isDirty();
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}
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/**
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* Returns true if there are updates to the node tree other than layout (such as a change in
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* background color) that would require StateBuilder to re-collect drawing state.
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*/
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/* package */ boolean isUpdated() {
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return mIsUpdated;
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}
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/**
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* Marks the node tree as requiring or not requiring a StateBuilder pass to collect drawing state.
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*/
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/* package */ void markUpdated(boolean isUpdated) {
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mIsUpdated = isUpdated;
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}
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}
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