119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <vector>
|
|
|
|
#include <fabric/core/ShadowNode.h>
|
|
#include <fabric/debug/DebugStringConvertible.h>
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
class TreeMutationInstruction;
|
|
|
|
using TreeMutationInstructionList = std::vector<TreeMutationInstruction>;
|
|
|
|
/*
|
|
* Describes single native views tree mutation instruction which may contain
|
|
* pointers to an old shadow node, a new shadow node, a parent shadow node and
|
|
* final index of inserted or updated node.
|
|
* The relationship between native view instances and shadow node instances is
|
|
* defined by `tag` value.
|
|
* Use static methods to instantiate mutation instructions of different types.
|
|
*/
|
|
class TreeMutationInstruction:
|
|
public DebugStringConvertible {
|
|
public:
|
|
|
|
#pragma mark - Designated Initializers
|
|
|
|
/*
|
|
* Creates and returns an *Creation* instruction.
|
|
*/
|
|
static const TreeMutationInstruction Create(
|
|
SharedShadowNode node
|
|
);
|
|
|
|
/*
|
|
* Creates and returns an *Deletion* instruction.
|
|
*/
|
|
static const TreeMutationInstruction Delete(
|
|
SharedShadowNode node
|
|
);
|
|
|
|
/*
|
|
* Creates and returns an *Insertion* instruction.
|
|
*/
|
|
static const TreeMutationInstruction Insert(
|
|
SharedShadowNode parentNode,
|
|
SharedShadowNode childNode,
|
|
int index
|
|
);
|
|
|
|
/*
|
|
* Creates and returns a *Removal* instruction.
|
|
*/
|
|
static const TreeMutationInstruction Remove(
|
|
SharedShadowNode parentNode,
|
|
SharedShadowNode childNode,
|
|
int index
|
|
);
|
|
|
|
/*
|
|
* Creates and returns an *Replacement* instruction.
|
|
*/
|
|
static const TreeMutationInstruction Replace(
|
|
SharedShadowNode parentNode,
|
|
SharedShadowNode oldChildNode,
|
|
SharedShadowNode newChildNode,
|
|
int index
|
|
);
|
|
|
|
#pragma mark - Type
|
|
|
|
enum Type {
|
|
Creation,
|
|
Deletion,
|
|
Insertion,
|
|
Removal,
|
|
Replacement
|
|
};
|
|
|
|
#pragma mark - Getters
|
|
|
|
Type getType() const;
|
|
SharedShadowNode getParentNode() const;
|
|
SharedShadowNode getOldChildNode() const;
|
|
SharedShadowNode getNewChildNode() const;
|
|
int getIndex() const;
|
|
|
|
#pragma mark - DebugStringConvertible
|
|
|
|
std::string getDebugName() const override;
|
|
SharedDebugStringConvertibleList getDebugProps() const override;
|
|
|
|
private:
|
|
TreeMutationInstruction(
|
|
Type type,
|
|
SharedShadowNode parentNode,
|
|
SharedShadowNode oldChildNode,
|
|
SharedShadowNode newChildNode,
|
|
int index
|
|
);
|
|
|
|
Type type_ {Creation};
|
|
SharedShadowNode parentNode_ {nullptr};
|
|
SharedShadowNode oldChildNode_ {nullptr};
|
|
SharedShadowNode newChildNode_ {nullptr};
|
|
int index_ {-1};
|
|
};
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|