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https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
This commit is contained in:
Roy Tam
commit
dcd9973243
150858 changed files with 23884658 additions and 0 deletions
409
dom/events/DOMEventTargetHelper.cpp
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409
dom/events/DOMEventTargetHelper.cpp
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/* -*- 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 "nsContentUtils.h"
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#include "nsIDocument.h"
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#include "mozilla/Sprintf.h"
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#include "nsGlobalWindow.h"
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#include "ScriptSettings.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventListenerManager.h"
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#include "mozilla/Likely.h"
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namespace mozilla {
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using namespace dom;
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NS_IMPL_CYCLE_COLLECTION_CLASS(DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(DOMEventTargetHelper)
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if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
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char name[512];
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nsAutoString uri;
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if (tmp->mOwnerWindow && tmp->mOwnerWindow->GetExtantDoc()) {
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Unused << tmp->mOwnerWindow->GetExtantDoc()->GetDocumentURI(uri);
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}
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nsXPCOMCycleCollectionParticipant* participant = nullptr;
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CallQueryInterface(tmp, &participant);
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SprintfLiteral(name, "%s %s",
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participant->ClassName(),
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NS_ConvertUTF16toUTF8(uri).get());
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cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name);
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} else {
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NS_IMPL_CYCLE_COLLECTION_DESCRIBE(DOMEventTargetHelper, tmp->mRefCnt.get())
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListenerManager)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mListenerManager)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(DOMEventTargetHelper)
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if (tmp->IsBlack() || tmp->IsCertainlyAliveForCC()) {
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if (tmp->mListenerManager) {
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tmp->mListenerManager->MarkForCC();
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}
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if (!tmp->IsBlack() && tmp->PreservingWrapper()) {
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// This marks the wrapper black.
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tmp->GetWrapper();
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}
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return true;
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}
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(DOMEventTargetHelper)
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return tmp->IsBlackAndDoesNotNeedTracing(tmp);
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(DOMEventTargetHelper)
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return tmp->IsBlack();
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMEventTargetHelper)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY(nsIDOMEventTarget)
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NS_INTERFACE_MAP_ENTRY(dom::EventTarget)
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NS_INTERFACE_MAP_ENTRY(DOMEventTargetHelper)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_LAST_RELEASE(DOMEventTargetHelper,
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LastRelease())
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NS_IMPL_DOMTARGET_DEFAULTS(DOMEventTargetHelper)
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DOMEventTargetHelper::~DOMEventTargetHelper()
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{
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if (nsPIDOMWindowInner* owner = GetOwner()) {
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nsGlobalWindow::Cast(owner)->RemoveEventTargetObject(this);
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}
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if (mListenerManager) {
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mListenerManager->Disconnect();
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}
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ReleaseWrapper(this);
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}
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void
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DOMEventTargetHelper::BindToOwner(nsPIDOMWindowInner* aOwner)
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{
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nsCOMPtr<nsIGlobalObject> glob = do_QueryInterface(aOwner);
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BindToOwner(glob);
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}
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void
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DOMEventTargetHelper::BindToOwner(nsIGlobalObject* aOwner)
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{
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nsCOMPtr<nsIGlobalObject> parentObject = do_QueryReferent(mParentObject);
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if (parentObject) {
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if (mOwnerWindow) {
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nsGlobalWindow::Cast(mOwnerWindow)->RemoveEventTargetObject(this);
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mOwnerWindow = nullptr;
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}
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mParentObject = nullptr;
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mHasOrHasHadOwnerWindow = false;
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}
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if (aOwner) {
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mParentObject = do_GetWeakReference(aOwner);
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MOZ_ASSERT(mParentObject, "All nsIGlobalObjects must support nsISupportsWeakReference");
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// Let's cache the result of this QI for fast access and off main thread usage
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mOwnerWindow = nsCOMPtr<nsPIDOMWindowInner>(do_QueryInterface(aOwner)).get();
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if (mOwnerWindow) {
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mHasOrHasHadOwnerWindow = true;
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nsGlobalWindow::Cast(mOwnerWindow)->AddEventTargetObject(this);
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}
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}
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}
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void
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DOMEventTargetHelper::BindToOwner(DOMEventTargetHelper* aOther)
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{
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if (mOwnerWindow) {
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nsGlobalWindow::Cast(mOwnerWindow)->RemoveEventTargetObject(this);
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mOwnerWindow = nullptr;
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mParentObject = nullptr;
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mHasOrHasHadOwnerWindow = false;
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}
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if (aOther) {
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mHasOrHasHadOwnerWindow = aOther->HasOrHasHadOwner();
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if (aOther->GetParentObject()) {
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mParentObject = do_GetWeakReference(aOther->GetParentObject());
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MOZ_ASSERT(mParentObject, "All nsIGlobalObjects must support nsISupportsWeakReference");
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// Let's cache the result of this QI for fast access and off main thread usage
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mOwnerWindow = nsCOMPtr<nsPIDOMWindowInner>(do_QueryInterface(aOther->GetParentObject())).get();
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if (mOwnerWindow) {
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mHasOrHasHadOwnerWindow = true;
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nsGlobalWindow::Cast(mOwnerWindow)->AddEventTargetObject(this);
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}
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}
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}
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}
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void
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DOMEventTargetHelper::DisconnectFromOwner()
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{
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mOwnerWindow = nullptr;
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mParentObject = nullptr;
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// Event listeners can't be handled anymore, so we can release them here.
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if (mListenerManager) {
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mListenerManager->Disconnect();
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mListenerManager = nullptr;
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}
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}
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nsPIDOMWindowInner*
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DOMEventTargetHelper::GetWindowIfCurrent() const
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{
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if (NS_FAILED(CheckInnerWindowCorrectness())) {
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return nullptr;
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}
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return GetOwner();
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}
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nsIDocument*
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DOMEventTargetHelper::GetDocumentIfCurrent() const
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{
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nsPIDOMWindowInner* win = GetWindowIfCurrent();
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if (!win) {
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return nullptr;
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}
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return win->GetDoc();
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}
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NS_IMETHODIMP
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DOMEventTargetHelper::RemoveEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture)
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{
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EventListenerManager* elm = GetExistingListenerManager();
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if (elm) {
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elm->RemoveEventListener(aType, aListener, aUseCapture);
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}
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return NS_OK;
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}
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NS_IMPL_REMOVE_SYSTEM_EVENT_LISTENER(DOMEventTargetHelper)
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NS_IMETHODIMP
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DOMEventTargetHelper::AddEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture,
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bool aWantsUntrusted,
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uint8_t aOptionalArgc)
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{
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NS_ASSERTION(!aWantsUntrusted || aOptionalArgc > 1,
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"Won't check if this is chrome, you want to set "
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"aWantsUntrusted to false or make the aWantsUntrusted "
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"explicit by making aOptionalArgc non-zero.");
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if (aOptionalArgc < 2) {
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nsresult rv = WantsUntrusted(&aWantsUntrusted);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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EventListenerManager* elm = GetOrCreateListenerManager();
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NS_ENSURE_STATE(elm);
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elm->AddEventListener(aType, aListener, aUseCapture, aWantsUntrusted);
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return NS_OK;
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}
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void
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DOMEventTargetHelper::AddEventListener(const nsAString& aType,
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EventListener* aListener,
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const AddEventListenerOptionsOrBoolean& aOptions,
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const Nullable<bool>& aWantsUntrusted,
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ErrorResult& aRv)
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{
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bool wantsUntrusted;
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if (aWantsUntrusted.IsNull()) {
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nsresult rv = WantsUntrusted(&wantsUntrusted);
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if (NS_FAILED(rv)) {
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aRv.Throw(rv);
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return;
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}
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} else {
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wantsUntrusted = aWantsUntrusted.Value();
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}
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EventListenerManager* elm = GetOrCreateListenerManager();
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if (!elm) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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elm->AddEventListener(aType, aListener, aOptions, wantsUntrusted);
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}
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NS_IMETHODIMP
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DOMEventTargetHelper::AddSystemEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture,
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bool aWantsUntrusted,
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uint8_t aOptionalArgc)
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{
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NS_ASSERTION(!aWantsUntrusted || aOptionalArgc > 1,
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"Won't check if this is chrome, you want to set "
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"aWantsUntrusted to false or make the aWantsUntrusted "
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"explicit by making aOptionalArgc non-zero.");
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if (aOptionalArgc < 2) {
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nsresult rv = WantsUntrusted(&aWantsUntrusted);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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return NS_AddSystemEventListener(this, aType, aListener, aUseCapture,
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aWantsUntrusted);
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}
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NS_IMETHODIMP
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DOMEventTargetHelper::DispatchEvent(nsIDOMEvent* aEvent, bool* aRetVal)
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{
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nsEventStatus status = nsEventStatus_eIgnore;
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nsresult rv =
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EventDispatcher::DispatchDOMEvent(this, nullptr, aEvent, nullptr, &status);
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*aRetVal = (status != nsEventStatus_eConsumeNoDefault);
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return rv;
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}
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nsresult
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DOMEventTargetHelper::DispatchTrustedEvent(const nsAString& aEventName)
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{
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RefPtr<Event> event = NS_NewDOMEvent(this, nullptr, nullptr);
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event->InitEvent(aEventName, false, false);
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return DispatchTrustedEvent(event);
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}
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nsresult
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DOMEventTargetHelper::DispatchTrustedEvent(nsIDOMEvent* event)
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{
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event->SetTrusted(true);
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bool dummy;
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return DispatchEvent(event, &dummy);
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}
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nsresult
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DOMEventTargetHelper::SetEventHandler(nsIAtom* aType,
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JSContext* aCx,
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const JS::Value& aValue)
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{
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RefPtr<EventHandlerNonNull> handler;
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JS::Rooted<JSObject*> callable(aCx);
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if (aValue.isObject() && JS::IsCallable(callable = &aValue.toObject())) {
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handler = new EventHandlerNonNull(aCx, callable, dom::GetIncumbentGlobal());
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}
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SetEventHandler(aType, EmptyString(), handler);
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return NS_OK;
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}
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void
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DOMEventTargetHelper::GetEventHandler(nsIAtom* aType,
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JSContext* aCx,
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JS::Value* aValue)
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{
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EventHandlerNonNull* handler = GetEventHandler(aType, EmptyString());
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if (handler) {
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*aValue = JS::ObjectValue(*handler->Callable());
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} else {
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*aValue = JS::NullValue();
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}
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}
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nsresult
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DOMEventTargetHelper::PreHandleEvent(EventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = true;
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aVisitor.mParentTarget = nullptr;
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return NS_OK;
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}
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nsresult
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DOMEventTargetHelper::PostHandleEvent(EventChainPostVisitor& aVisitor)
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{
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return NS_OK;
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}
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nsresult
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DOMEventTargetHelper::DispatchDOMEvent(WidgetEvent* aEvent,
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nsIDOMEvent* aDOMEvent,
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nsPresContext* aPresContext,
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nsEventStatus* aEventStatus)
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{
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return EventDispatcher::DispatchDOMEvent(this, aEvent, aDOMEvent,
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aPresContext, aEventStatus);
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}
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EventListenerManager*
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DOMEventTargetHelper::GetOrCreateListenerManager()
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{
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if (!mListenerManager) {
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mListenerManager = new EventListenerManager(this);
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}
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return mListenerManager;
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}
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EventListenerManager*
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DOMEventTargetHelper::GetExistingListenerManager() const
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{
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return mListenerManager;
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}
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nsIScriptContext*
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DOMEventTargetHelper::GetContextForEventHandlers(nsresult* aRv)
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{
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*aRv = CheckInnerWindowCorrectness();
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if (NS_FAILED(*aRv)) {
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return nullptr;
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}
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nsPIDOMWindowInner* owner = GetOwner();
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return owner ? nsGlobalWindow::Cast(owner)->GetContextInternal()
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: nullptr;
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}
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nsresult
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DOMEventTargetHelper::WantsUntrusted(bool* aRetVal)
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{
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nsresult rv = CheckInnerWindowCorrectness();
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDocument> doc = GetDocumentIfCurrent();
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// We can let listeners on workers to always handle all the events.
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*aRetVal = (doc && !nsContentUtils::IsChromeDoc(doc)) || !NS_IsMainThread();
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return rv;
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}
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void
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DOMEventTargetHelper::EventListenerAdded(nsIAtom* aType)
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{
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ErrorResult rv;
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EventListenerWasAdded(Substring(nsDependentAtomString(aType), 2), rv);
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}
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void
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DOMEventTargetHelper::EventListenerRemoved(nsIAtom* aType)
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{
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ErrorResult rv;
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EventListenerWasRemoved(Substring(nsDependentAtomString(aType), 2), rv);
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}
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} // namespace mozilla
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||||
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