90 lines
2.8 KiB
C++
90 lines
2.8 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 "CloseWatcherManager.h"
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#include "CloseWatcher.h"
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION(CloseWatcherManager, mGroups)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(CloseWatcherManager)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(CloseWatcherManager)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CloseWatcherManager)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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// https://html.spec.whatwg.org/multipage/interaction.html#notify-the-close-watcher-manager-about-user-activation
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void CloseWatcherManager::NotifyUserInteraction() {
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if (mNextUserInteractionAllowsNewGroup) {
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mAllowedNumberOfGroups += 1;
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mNextUserInteractionAllowsNewGroup = false;
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}
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}
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bool CloseWatcherManager::CanGrow() const {
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return mGroups.Length() < mAllowedNumberOfGroups;
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}
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// https://html.spec.whatwg.org/multipage/interaction.html#process-close-watchers
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MOZ_CAN_RUN_SCRIPT bool CloseWatcherManager::ProcessCloseRequest() {
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bool processedACloseWatcher = false;
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if (mGroups.IsEmpty()) {
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return processedACloseWatcher;
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}
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auto i = mGroups.Length() - 1;
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auto group = mGroups.ElementAt(i).Clone();
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for (RefPtr<CloseWatcher> watcher : group.BackwardRange()) {
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processedACloseWatcher = true;
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// TODO:(keithamus): https://github.com/whatwg/html/issues/10240 ?
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if (!watcher->RequestToClose(true)) {
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break;
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}
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}
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if (mAllowedNumberOfGroups > 1) {
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mAllowedNumberOfGroups -= 1;
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}
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return processedACloseWatcher;
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}
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// https://html.spec.whatwg.org/multipage/interaction.html#establish-a-close-watcher
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// step 4-6
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void CloseWatcherManager::Add(CloseWatcher& aWatcher) {
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if (CanGrow()) {
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mGroups.AppendElement()->AppendElement(&aWatcher);
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} else {
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MOZ_ASSERT(!mGroups.IsEmpty(),
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"CloseWatcherManager groups must be at least 1");
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auto i = mGroups.Length() - 1;
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MOZ_ASSERT(!mGroups.ElementAt(i).Contains(&aWatcher));
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mGroups.ElementAt(i).AppendElement(&aWatcher);
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}
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mNextUserInteractionAllowsNewGroup = true;
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}
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// https://html.spec.whatwg.org/multipage/interaction.html#close-watcher-destroy
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void CloseWatcherManager::Remove(CloseWatcher& aWatcher) {
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CloseWatcherArray::ForwardIterator iter(mGroups);
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while (iter.HasMore()) {
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auto& group = iter.GetNext();
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group.RemoveElement(&aWatcher);
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if (group.IsEmpty()) {
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iter.Remove();
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}
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}
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mGroups.Compact();
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}
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bool CloseWatcherManager::Contains(const CloseWatcher& aWatcher) const {
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for (const auto& group : mGroups.BackwardRange()) {
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if (group.Contains(&aWatcher)) {
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return true;
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}
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}
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return false;
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}
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} // namespace mozilla::dom
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