a2b6ddb7b1
Summary:
Includes React Native and its dependencies Fresco, Metro, and Yoga. Excludes samples/examples/docs.
find: ^(?:( *)|( *(?:[\*~#]|::))( )? *)?Copyright (?:\(c\) )?(\d{4})\b.+Facebook[\s\S]+?BSD[\s\S]+?(?:this source tree|the same directory)\.$
replace: $1$2$3Copyright (c) $4-present, Facebook, Inc.\n$2\n$1$2$3This source code is licensed under the MIT license found in the\n$1$2$3LICENSE file in the root directory of this source tree.
Reviewed By: TheSavior, yungsters
Differential Revision: D7007050
fbshipit-source-id: 37dd6bf0ffec0923bfc99c260bb330683f35553e
79 lines
2.1 KiB
C#
79 lines
2.1 KiB
C#
/**
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* Copyright (c) 2014-present, Facebook, Inc.
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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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using System;
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using System.Runtime.InteropServices;
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namespace Facebook.Yoga
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{
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internal class YGNodeHandle : SafeHandle
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{
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private GCHandle _managedNodeHandle;
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private YGNodeHandle() : base(IntPtr.Zero, true)
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{
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}
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public override bool IsInvalid
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{
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get
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{
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return this.handle == IntPtr.Zero;
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}
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}
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protected override bool ReleaseHandle()
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{
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ReleaseManaged();
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if (!IsInvalid)
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{
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Native.YGNodeFree(this.handle);
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GC.KeepAlive(this);
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}
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return true;
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}
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public void SetContext(YogaNode node)
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{
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if (!_managedNodeHandle.IsAllocated)
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{
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#if UNITY_5_4_OR_NEWER
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// Weak causes 'GCHandle value belongs to a different domain' error
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_managedNodeHandle = GCHandle.Alloc(node);
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#else
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_managedNodeHandle = GCHandle.Alloc(node, GCHandleType.Weak);
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#endif
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var managedNodePtr = GCHandle.ToIntPtr(_managedNodeHandle);
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Native.YGNodeSetContext(this.handle, managedNodePtr);
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}
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}
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public void ReleaseManaged()
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{
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if (_managedNodeHandle.IsAllocated)
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{
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_managedNodeHandle.Free();
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}
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}
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public static YogaNode GetManaged(IntPtr unmanagedNodePtr)
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{
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if (unmanagedNodePtr != IntPtr.Zero)
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{
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var managedNodePtr = Native.YGNodeGetContext(unmanagedNodePtr);
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var node = GCHandle.FromIntPtr(managedNodePtr).Target as YogaNode;
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if (node == null)
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{
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throw new InvalidOperationException("YogaNode is already deallocated");
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}
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return node;
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}
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return null;
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}
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}
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}
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