forked from mirrors/gecko-dev
5bc0854d2b
Differential Revision: https://phabricator.services.mozilla.com/D45168 --HG-- extra : moz-landing-system : lando
130 lines
3.7 KiB
C++
130 lines
3.7 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 "mozilla/dom/UserActivation.h"
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#include "mozilla/TextEvents.h"
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namespace mozilla {
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namespace dom {
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namespace {
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// The current depth of user and keyboard inputs. sUserInputEventDepth
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// is the number of any user input events, page load events and mouse over
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// events. sUserKeyboardEventDepth is the number of keyboard input events.
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// Incremented whenever we start handling a user input, decremented when we
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// have finished handling a user input. This depth is *not* reset in case
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// of nested event loops.
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static int32_t sUserInputEventDepth = 0;
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static int32_t sUserKeyboardEventDepth = 0;
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// Time at which we began handling user input. Reset to the epoch
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// once we have finished handling user input.
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static TimeStamp sHandlingInputStart;
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// Time at which we began handling the latest user input. Not reset
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// at the end of the input.
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static TimeStamp sLatestUserInputStart;
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} // namespace
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/* static */
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bool UserActivation::IsHandlingUserInput() { return sUserInputEventDepth > 0; }
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/* static */
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bool UserActivation::IsHandlingKeyboardInput() {
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return sUserKeyboardEventDepth > 0;
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}
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/* static */
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bool UserActivation::IsUserInteractionEvent(const WidgetEvent* aEvent) {
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if (!aEvent->IsTrusted()) {
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return false;
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}
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switch (aEvent->mMessage) {
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// eKeyboardEventClass
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case eKeyPress:
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case eKeyDown:
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case eKeyUp:
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// Not all keyboard events are treated as user input, so that popups
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// can't be opened, fullscreen mode can't be started, etc at
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// unexpected time.
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return aEvent->AsKeyboardEvent()->CanTreatAsUserInput();
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// eBasicEventClass
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case eFormChange:
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// eMouseEventClass
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case eMouseClick:
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case eMouseDown:
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case eMouseUp:
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// ePointerEventClass
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case ePointerDown:
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case ePointerUp:
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// eTouchEventClass
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case eTouchStart:
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case eTouchEnd:
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return true;
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default:
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return false;
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}
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}
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/* static */
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void UserActivation::StartHandlingUserInput(EventMessage aMessage) {
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++sUserInputEventDepth;
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if (sUserInputEventDepth == 1) {
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sLatestUserInputStart = sHandlingInputStart = TimeStamp::Now();
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}
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if (WidgetEvent::IsKeyEventMessage(aMessage)) {
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++sUserKeyboardEventDepth;
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}
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}
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/* static */
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void UserActivation::StopHandlingUserInput(EventMessage aMessage) {
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--sUserInputEventDepth;
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if (sUserInputEventDepth == 0) {
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sHandlingInputStart = TimeStamp();
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}
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if (WidgetEvent::IsKeyEventMessage(aMessage)) {
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--sUserKeyboardEventDepth;
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}
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}
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/* static */
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TimeStamp UserActivation::GetHandlingInputStart() {
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return sHandlingInputStart;
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}
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/* static */
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TimeStamp UserActivation::LatestUserInputStart() {
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return sLatestUserInputStart;
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}
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//-----------------------------------------------------------------------------
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// mozilla::dom::AutoHandlingUserInputStatePusher
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//-----------------------------------------------------------------------------
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AutoHandlingUserInputStatePusher::AutoHandlingUserInputStatePusher(
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bool aIsHandlingUserInput, WidgetEvent* aEvent)
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: mMessage(aEvent ? aEvent->mMessage : eVoidEvent),
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mIsHandlingUserInput(aIsHandlingUserInput) {
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if (!aIsHandlingUserInput) {
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return;
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}
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UserActivation::StartHandlingUserInput(mMessage);
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}
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AutoHandlingUserInputStatePusher::~AutoHandlingUserInputStatePusher() {
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if (!mIsHandlingUserInput) {
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return;
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}
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UserActivation::StopHandlingUserInput(mMessage);
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}
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} // namespace dom
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} // namespace mozilla
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