mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
David Vacca
3093010ea5
Summary: This diff moves fabric C++ code from ReactCommon/fabric to ReactCommon/react/renderer As part of this diff I also refactored components, codegen and callsites on CatalystApp, FB4A and venice Script: P137350694 changelog: [internal] internal refactor Reviewed By: fkgozali Differential Revision: D22852139 fbshipit-source-id: f85310ba858b6afd81abfd9cbe6d70b28eca7415
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#include "EventTarget.h"
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
using Tag = EventTarget::Tag;
|
|
|
|
EventTarget::EventTarget(
|
|
jsi::Runtime &runtime,
|
|
const jsi::Value &instanceHandle,
|
|
Tag tag)
|
|
: weakInstanceHandle_(
|
|
jsi::WeakObject(runtime, instanceHandle.asObject(runtime))),
|
|
strongInstanceHandle_(jsi::Value::null()),
|
|
tag_(tag) {}
|
|
|
|
void EventTarget::setEnabled(bool enabled) const {
|
|
enabled_ = enabled;
|
|
}
|
|
|
|
void EventTarget::retain(jsi::Runtime &runtime) const {
|
|
if (!enabled_) {
|
|
return;
|
|
}
|
|
|
|
strongInstanceHandle_ = weakInstanceHandle_.lock(runtime);
|
|
|
|
// Having a `null` or `undefined` object here indicates that
|
|
// `weakInstanceHandle_` was already deallocated. This should *not* happen by
|
|
// design, and if it happens it's a severe problem. This basically means that
|
|
// particular implementation of JSI was able to detect this inconsistency and
|
|
// dealt with it, but some JSI implementation may not support this feature and
|
|
// that case will lead to a crash in those environments.
|
|
assert(!strongInstanceHandle_.isNull());
|
|
assert(!strongInstanceHandle_.isUndefined());
|
|
}
|
|
|
|
void EventTarget::release(jsi::Runtime &runtime) const {
|
|
// The method does not use `jsi::Runtime` reference.
|
|
// It takes it only to ensure thread-safety (if the caller has the reference,
|
|
// we are on a proper thread).
|
|
strongInstanceHandle_ = jsi::Value::null();
|
|
}
|
|
|
|
jsi::Value EventTarget::getInstanceHandle(jsi::Runtime &runtime) const {
|
|
if (strongInstanceHandle_.isNull()) {
|
|
// The `instanceHandle` is not retained.
|
|
return jsi::Value::null();
|
|
}
|
|
|
|
return jsi::Value(runtime, strongInstanceHandle_);
|
|
}
|
|
|
|
Tag EventTarget::getTag() const {
|
|
return tag_;
|
|
}
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|