108 lines
3.3 KiB
C++
108 lines
3.3 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/PermissionStatus.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/Permission.h"
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#include "mozilla/Services.h"
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#include "nsIPermissionManager.h"
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#include "PermissionUtils.h"
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#include "PermissionStatusSink.h"
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#include "nsGlobalWindowInner.h"
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namespace mozilla::dom {
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PermissionStatus::PermissionStatus(nsIGlobalObject* aGlobal,
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PermissionName aName)
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: DOMEventTargetHelper(aGlobal),
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mName(aName),
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mState(PermissionState::Denied) {
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KeepAliveIfHasListenersFor(nsGkAtoms::onchange);
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}
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// https://w3c.github.io/permissions/#onchange-attribute and
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// https://w3c.github.io/permissions/#query-method
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RefPtr<PermissionStatus::SimplePromise> PermissionStatus::Init() {
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mSink = CreateSink();
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MOZ_ASSERT(mSink);
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return mSink->Init()->Then(
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GetCurrentSerialEventTarget(), __func__,
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[self = RefPtr(this)](const PermissionStatusSink::PermissionStatePromise::
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ResolveOrRejectValue& aResult) {
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if (aResult.IsResolve()) {
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self->mState = self->ComputeStateFromAction(aResult.ResolveValue());
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return SimplePromise::CreateAndResolve(NS_OK, __func__);
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}
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return SimplePromise::CreateAndReject(aResult.RejectValue(), __func__);
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});
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}
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PermissionStatus::~PermissionStatus() {
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if (mSink) {
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mSink->Disentangle();
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mSink = nullptr;
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}
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}
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JSObject* PermissionStatus::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return PermissionStatus_Binding::Wrap(aCx, this, aGivenProto);
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}
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nsLiteralCString PermissionStatus::GetPermissionType() const {
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return PermissionNameToType(mName);
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}
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// https://w3c.github.io/permissions/#dfn-permissionstatus-update-steps
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void PermissionStatus::PermissionChanged(uint32_t aAction) {
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PermissionState newState = ComputeStateFromAction(aAction);
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if (mState == newState) {
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return;
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}
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mState = newState;
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// Step 4: Queue a task on the permissions task source to fire an
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// event named change at status.
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RefPtr<AsyncEventDispatcher> eventDispatcher =
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new AsyncEventDispatcher(this, u"change"_ns, CanBubble::eNo);
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eventDispatcher->PostDOMEvent();
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}
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void PermissionStatus::DisconnectFromOwner() {
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IgnoreKeepAliveIfHasListenersFor(nsGkAtoms::onchange);
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if (mSink) {
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mSink->Disentangle();
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mSink = nullptr;
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}
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DOMEventTargetHelper::DisconnectFromOwner();
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}
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void PermissionStatus::GetType(nsACString& aName) const {
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aName.Assign(GetPermissionType());
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}
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already_AddRefed<PermissionStatusSink> PermissionStatus::CreateSink() {
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RefPtr<PermissionStatusSink> sink =
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new PermissionStatusSink(this, mName, GetPermissionType());
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return sink.forget();
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}
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PermissionState PermissionStatus::ComputeStateFromAction(uint32_t aAction) {
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nsCOMPtr<nsIGlobalObject> global = GetOwnerGlobal();
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if (NS_WARN_IF(!global)) {
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return PermissionState::Denied;
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}
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return ActionToPermissionState(aAction, mName, global);
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}
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} // namespace mozilla::dom
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