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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CloseWatcherManager.h"
#include "CloseWatcher.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION(CloseWatcherManager, mGroups)
NS_IMPL_CYCLE_COLLECTING_ADDREF(CloseWatcherManager)
NS_IMPL_CYCLE_COLLECTING_RELEASE(CloseWatcherManager)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CloseWatcherManager)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
// https://html.spec.whatwg.org/multipage/interaction.html#notify-the-close-watcher-manager-about-user-activation
void CloseWatcherManager::NotifyUserInteraction() {
if (mNextUserInteractionAllowsNewGroup) {
mAllowedNumberOfGroups += 1;
mNextUserInteractionAllowsNewGroup = false;
}
}
bool CloseWatcherManager::CanGrow() const {
return mGroups.Length() < mAllowedNumberOfGroups;
}
// https://html.spec.whatwg.org/multipage/interaction.html#process-close-watchers
MOZ_CAN_RUN_SCRIPT bool CloseWatcherManager::ProcessCloseRequest() {
bool processedACloseWatcher = false;
if (mGroups.IsEmpty()) {
return processedACloseWatcher;
}
auto i = mGroups.Length() - 1;
auto group = mGroups.ElementAt(i).Clone();
for (RefPtr<CloseWatcher> watcher : group.BackwardRange()) {
processedACloseWatcher = true;
// TODO:(keithamus): https://github.com/whatwg/html/issues/10240 ?
if (!watcher->RequestToClose(true)) {
break;
}
}
if (mAllowedNumberOfGroups > 1) {
mAllowedNumberOfGroups -= 1;
}
return processedACloseWatcher;
}
// https://html.spec.whatwg.org/multipage/interaction.html#establish-a-close-watcher
// step 4-6
void CloseWatcherManager::Add(CloseWatcher& aWatcher) {
if (CanGrow()) {
mGroups.AppendElement()->AppendElement(&aWatcher);
} else {
MOZ_ASSERT(!mGroups.IsEmpty(),
"CloseWatcherManager groups must be at least 1");
auto i = mGroups.Length() - 1;
MOZ_ASSERT(!mGroups.ElementAt(i).Contains(&aWatcher));
mGroups.ElementAt(i).AppendElement(&aWatcher);
}
mNextUserInteractionAllowsNewGroup = true;
}
// https://html.spec.whatwg.org/multipage/interaction.html#close-watcher-destroy
void CloseWatcherManager::Remove(CloseWatcher& aWatcher) {
CloseWatcherArray::ForwardIterator iter(mGroups);
while (iter.HasMore()) {
auto& group = iter.GetNext();
group.RemoveElement(&aWatcher);
if (group.IsEmpty()) {
iter.Remove();
}
}
mGroups.Compact();
}
bool CloseWatcherManager::Contains(const CloseWatcher& aWatcher) const {
for (const auto& group : mGroups.BackwardRange()) {
if (group.Contains(&aWatcher)) {
return true;
}
}
return false;
}
} // namespace mozilla::dom
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