зеркало из https://github.com/mozilla/gecko-dev.git
94 строки
2.9 KiB
C++
94 строки
2.9 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "TelemetryScrollProbe.h"
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#include "nsIDOMDocument.h" // for nsIDOMDocument
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#include "nsIDOMEvent.h" // for nsIDOMEvent
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#include "nsIURI.h" // for nsIURI
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#include "TabChild.h" // for TabChildGlobal, TabChildBase
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#include "mozilla/Telemetry.h" // for mozilla::Telemetry
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namespace mozilla {
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namespace dom {
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/* static */ void
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TelemetryScrollProbe::Create(TabChildGlobal* aWebFrame)
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{
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nsWeakPtr webNav = do_GetWeakReference(aWebFrame->mTabChild->WebNavigation());
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RefPtr<TelemetryScrollProbe> probe = new TelemetryScrollProbe(webNav);
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aWebFrame->AddEventListener(NS_LITERAL_STRING("pagehide"), probe, true, false, 0);
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}
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already_AddRefed<nsIWebNavigation>
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TelemetryScrollProbe::GetWebNavigation() const
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{
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nsCOMPtr<nsIWebNavigation> webNav = do_QueryReferent(mWebNav);
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return webNav.forget();
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}
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already_AddRefed<nsIDocument>
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TelemetryScrollProbe::GetDocument() const
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{
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nsCOMPtr<nsIDocument> result;
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if (nsCOMPtr<nsIWebNavigation> webNav = GetWebNavigation()) {
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nsCOMPtr<nsIDOMDocument> domDoc;
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webNav->GetDocument(getter_AddRefs(domDoc));
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result = do_QueryInterface(domDoc);
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}
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return result.forget();
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}
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already_AddRefed<nsIPresShell>
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TelemetryScrollProbe::GetPresShell() const
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{
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nsCOMPtr<nsIPresShell> result;
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if (nsCOMPtr<nsIDocument> doc = GetDocument()) {
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result = doc->GetShell();
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}
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return result.forget();
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}
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bool
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TelemetryScrollProbe::ShouldIgnore(nsIDOMEvent* aEvent) const
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{
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nsCOMPtr<nsIDOMEventTarget> target;
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aEvent->GetTarget(getter_AddRefs(target));
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nsCOMPtr<nsIDocument> targetDocument = do_QueryInterface(target);
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RefPtr<nsIDocument> document = GetDocument();
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return !document || targetDocument != document || nsContentUtils::IsSystemPrincipal(document->NodePrincipal());
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}
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NS_IMPL_ISUPPORTS(TelemetryScrollProbe, nsIDOMEventListener)
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NS_IMETHODIMP
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TelemetryScrollProbe::HandleEvent(nsIDOMEvent* aEvent)
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{
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RefPtr<nsIPresShell> presShell = GetPresShell();
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if (!presShell || ShouldIgnore(aEvent)) {
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return NS_OK;
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}
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RefPtr<nsPresContext> presContext = presShell->GetPresContext();
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nscoord maxAppUnits = presContext->TelemetryScrollMaxY();
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nscoord totalAppUnits = presContext->TelemetryScrollTotalY();
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float maxCSSPixels = nsPresContext::AppUnitsToFloatCSSPixels(maxAppUnits);
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float totalCSSPixels = nsPresContext::AppUnitsToFloatCSSPixels(totalAppUnits);
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mozilla::Telemetry::Accumulate(mozilla::Telemetry::TOTAL_SCROLL_Y, totalCSSPixels);
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mozilla::Telemetry::Accumulate(mozilla::Telemetry::PAGE_MAX_SCROLL_Y, maxCSSPixels);
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return NS_OK;
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}
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} // namespace dom
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} // namespace mozilla
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