tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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CoalescedInputData.cpp (1535B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "CoalescedInputData.h"
      8 
      9 #include "BrowserChild.h"
     10 #include "mozilla/PresShell.h"
     11 #include "nsRefreshDriver.h"
     12 
     13 using namespace mozilla;
     14 using namespace mozilla::dom;
     15 
     16 void CoalescedInputFlusher::StartObserver() {
     17  nsRefreshDriver* refreshDriver = GetRefreshDriver();
     18  if (mRefreshDriver && mRefreshDriver == refreshDriver) {
     19    // Nothing to do if we already added an observer and it's same refresh
     20    // driver.
     21    return;
     22  }
     23  RemoveObserver();
     24  if (refreshDriver) {
     25    mRefreshDriver = refreshDriver;
     26    mRefreshDriver->AddRefreshObserver(this, FlushType::Event,
     27                                       "Coalesced input move flusher");
     28  }
     29 }
     30 
     31 CoalescedInputFlusher::CoalescedInputFlusher(BrowserChild* aBrowserChild)
     32    : mBrowserChild(aBrowserChild) {}
     33 
     34 void CoalescedInputFlusher::RemoveObserver() {
     35  if (mRefreshDriver) {
     36    mRefreshDriver->RemoveRefreshObserver(this, FlushType::Event);
     37    mRefreshDriver = nullptr;
     38  }
     39 }
     40 
     41 CoalescedInputFlusher::~CoalescedInputFlusher() = default;
     42 
     43 nsRefreshDriver* CoalescedInputFlusher::GetRefreshDriver() {
     44  if (PresShell* presShell = mBrowserChild->GetTopLevelPresShell()) {
     45    return presShell->GetRefreshDriver();
     46  }
     47  return nullptr;
     48 }