64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
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/*
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* Copyright (c) Meta Platforms, Inc. and 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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#include "RunLoopObserver.h"
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#include <react/debug/react_native_assert.h>
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namespace facebook {
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namespace react {
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RunLoopObserver::RunLoopObserver(
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Activity activities,
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WeakOwner const &owner) noexcept
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: activities_(activities), owner_(owner) {}
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void RunLoopObserver::setDelegate(Delegate const *delegate) const noexcept {
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// We need these constraints to ensure basic thread-safety.
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react_native_assert(delegate && "A delegate must not be `nullptr`.");
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react_native_assert(
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!delegate_ && "`RunLoopObserver::setDelegate` must be called once.");
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delegate_ = delegate;
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}
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void RunLoopObserver::enable() const noexcept {
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if (enabled_) {
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return;
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}
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enabled_ = true;
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startObserving();
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}
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void RunLoopObserver::disable() const noexcept {
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if (!enabled_) {
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return;
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}
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enabled_ = false;
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stopObserving();
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}
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void RunLoopObserver::activityDidChange(Activity activity) const noexcept {
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if (!enabled_) {
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return;
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}
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react_native_assert(
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!owner_.expired() &&
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"`owner_` is null. The caller must `lock` the owner and check it for being not null.");
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delegate_->activityDidChange(delegate_, activity);
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}
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RunLoopObserver::WeakOwner RunLoopObserver::getOwner() const noexcept {
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return owner_;
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}
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} // namespace react
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} // namespace facebook
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