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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsRefreshObservers.h"
#include "PresShell.h"
namespace mozilla {
OneShotPostRefreshObserver::OneShotPostRefreshObserver(PresShell* aPresShell,
Action&& aAction)
: mPresShell(aPresShell), mAction(std::move(aAction)) {}
OneShotPostRefreshObserver::OneShotPostRefreshObserver(PresShell* aPresShell)
: mPresShell(aPresShell) {}
OneShotPostRefreshObserver::~OneShotPostRefreshObserver() = default;
void OneShotPostRefreshObserver::DidRefresh() {
if (!mPresShell) {
MOZ_ASSERT_UNREACHABLE(
"Post-refresh observer fired again after failed attempt at "
"unregistering it");
return;
}
RefPtr<OneShotPostRefreshObserver> kungfuDeathGrip = this;
mAction(mPresShell, this);
nsPresContext* presContext = mPresShell->GetPresContext();
if (!presContext) {
MOZ_ASSERT_UNREACHABLE(
"Unable to unregister post-refresh observer! Leaking it instead of "
"leaving garbage registered");
// Graceful handling, just in case...
mPresShell = nullptr;
mAction = Action();
return;
}
presContext->UnregisterOneShotPostRefreshObserver(this);
}
} // namespace mozilla
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