forked from mirrors/gecko-dev
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsRefreshDriver.h"
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#include "BrowserChild.h"
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#include "CoalescedInputData.h"
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#include "mozilla/PresShell.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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void CoalescedInputFlusher::StartObserver() {
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nsRefreshDriver* refreshDriver = GetRefreshDriver();
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if (mRefreshDriver && mRefreshDriver == refreshDriver) {
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// Nothing to do if we already added an observer and it's same refresh
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// driver.
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return;
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}
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RemoveObserver();
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if (refreshDriver) {
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mRefreshDriver = refreshDriver;
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mRefreshDriver->AddRefreshObserver(this, FlushType::Event,
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"Coalesced input move flusher");
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}
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}
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CoalescedInputFlusher::CoalescedInputFlusher(BrowserChild* aBrowserChild)
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: mBrowserChild(aBrowserChild) {}
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void CoalescedInputFlusher::RemoveObserver() {
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if (mRefreshDriver) {
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mRefreshDriver->RemoveRefreshObserver(this, FlushType::Event);
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mRefreshDriver = nullptr;
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}
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}
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CoalescedInputFlusher::~CoalescedInputFlusher() = default;
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nsRefreshDriver* CoalescedInputFlusher::GetRefreshDriver() {
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if (PresShell* presShell = mBrowserChild->GetTopLevelPresShell()) {
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return presShell->GetRefreshDriver();
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}
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return nullptr;
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}
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