зеркало из https://github.com/mozilla/gecko-dev.git
424 строки
11 KiB
C++
424 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsXULPrototypeDocument.h"
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#include "XULDocument.h"
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#include "nsAString.h"
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#include "nsIObjectInputStream.h"
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#include "nsIObjectOutputStream.h"
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#include "nsIPrincipal.h"
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#include "nsJSPrincipals.h"
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#include "nsIScriptObjectPrincipal.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIServiceManager.h"
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#include "nsIArray.h"
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#include "nsIURI.h"
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#include "jsapi.h"
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#include "jsfriendapi.h"
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#include "nsString.h"
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#include "nsIConsoleService.h"
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#include "nsIScriptError.h"
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#include "nsDOMCID.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentUtils.h"
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#include "nsCCUncollectableMarker.h"
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#include "xpcpublic.h"
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#include "mozilla/dom/BindingUtils.h"
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using mozilla::dom::DestroyProtoAndIfaceCache;
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using mozilla::dom::XULDocument;
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uint32_t nsXULPrototypeDocument::gRefCnt;
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//----------------------------------------------------------------------
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//
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// ctors, dtors, n' stuff
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//
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nsXULPrototypeDocument::nsXULPrototypeDocument()
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: mRoot(nullptr), mLoaded(false), mCCGeneration(0), mGCNumber(0) {
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++gRefCnt;
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}
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nsresult nsXULPrototypeDocument::Init() {
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mNodeInfoManager = new nsNodeInfoManager();
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return mNodeInfoManager->Init(nullptr);
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}
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nsXULPrototypeDocument::~nsXULPrototypeDocument() {
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if (mRoot) mRoot->ReleaseSubtree();
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsXULPrototypeDocument)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXULPrototypeDocument)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mPrototypeWaiters)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXULPrototypeDocument)
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if (nsCCUncollectableMarker::InGeneration(cb, tmp->mCCGeneration)) {
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return NS_SUCCESS_INTERRUPTED_TRAVERSE;
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRoot)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNodeInfoManager)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULPrototypeDocument)
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NS_INTERFACE_MAP_ENTRY(nsISerializable)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULPrototypeDocument)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULPrototypeDocument)
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NS_IMETHODIMP
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NS_NewXULPrototypeDocument(nsXULPrototypeDocument** aResult) {
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*aResult = nullptr;
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RefPtr<nsXULPrototypeDocument> doc = new nsXULPrototypeDocument();
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nsresult rv = doc->Init();
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if (NS_FAILED(rv)) {
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return rv;
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}
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doc.forget(aResult);
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return rv;
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}
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//----------------------------------------------------------------------
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//
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// nsISerializable methods
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//
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NS_IMETHODIMP
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nsXULPrototypeDocument::Read(nsIObjectInputStream* aStream) {
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nsCOMPtr<nsISupports> supports;
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nsresult rv = aStream->ReadObject(true, getter_AddRefs(supports));
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if (NS_FAILED(rv)) {
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return rv;
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}
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mURI = do_QueryInterface(supports);
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// nsIPrincipal mNodeInfoManager->mPrincipal
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rv = aStream->ReadObject(true, getter_AddRefs(supports));
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIPrincipal> principal = do_QueryInterface(supports);
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// Better safe than sorry....
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mNodeInfoManager->SetDocumentPrincipal(principal);
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mRoot = new nsXULPrototypeElement();
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// mozilla::dom::NodeInfo table
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nsTArray<RefPtr<mozilla::dom::NodeInfo>> nodeInfos;
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uint32_t count, i;
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rv = aStream->Read32(&count);
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsAutoString namespaceURI, prefixStr, localName;
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bool prefixIsNull;
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RefPtr<nsAtom> prefix;
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for (i = 0; i < count; ++i) {
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rv = aStream->ReadString(namespaceURI);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = aStream->ReadBoolean(&prefixIsNull);
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (prefixIsNull) {
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prefix = nullptr;
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} else {
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rv = aStream->ReadString(prefixStr);
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if (NS_FAILED(rv)) {
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return rv;
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}
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prefix = NS_Atomize(prefixStr);
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}
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rv = aStream->ReadString(localName);
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if (NS_FAILED(rv)) {
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return rv;
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}
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RefPtr<mozilla::dom::NodeInfo> nodeInfo;
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// Using UINT16_MAX here as we don't know which nodeinfos will be
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// used for attributes and which for elements. And that doesn't really
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// matter.
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rv = mNodeInfoManager->GetNodeInfo(localName, prefix, namespaceURI,
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UINT16_MAX, getter_AddRefs(nodeInfo));
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if (NS_FAILED(rv)) {
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return rv;
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}
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nodeInfos.AppendElement(nodeInfo);
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}
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// Document contents
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uint32_t type;
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while (NS_SUCCEEDED(rv)) {
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rv = aStream->Read32(&type);
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if (NS_FAILED(rv)) {
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return rv;
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break;
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}
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if ((nsXULPrototypeNode::Type)type == nsXULPrototypeNode::eType_PI) {
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RefPtr<nsXULPrototypePI> pi = new nsXULPrototypePI();
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rv = pi->Deserialize(aStream, this, mURI, &nodeInfos);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = AddProcessingInstruction(pi);
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if (NS_FAILED(rv)) {
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return rv;
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}
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} else if ((nsXULPrototypeNode::Type)type ==
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nsXULPrototypeNode::eType_Element) {
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rv = mRoot->Deserialize(aStream, this, mURI, &nodeInfos);
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if (NS_FAILED(rv)) {
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return rv;
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}
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break;
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} else {
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MOZ_ASSERT_UNREACHABLE("Unexpected prototype node type");
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return NS_ERROR_FAILURE;
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}
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}
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return NotifyLoadDone();
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}
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static nsresult GetNodeInfos(nsXULPrototypeElement* aPrototype,
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nsTArray<RefPtr<mozilla::dom::NodeInfo>>& aArray) {
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if (aArray.IndexOf(aPrototype->mNodeInfo) == aArray.NoIndex) {
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aArray.AppendElement(aPrototype->mNodeInfo);
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}
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// Search attributes
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uint32_t i;
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for (i = 0; i < aPrototype->mNumAttributes; ++i) {
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RefPtr<mozilla::dom::NodeInfo> ni;
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nsAttrName* name = &aPrototype->mAttributes[i].mName;
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if (name->IsAtom()) {
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ni = aPrototype->mNodeInfo->NodeInfoManager()->GetNodeInfo(
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name->Atom(), nullptr, kNameSpaceID_None, nsINode::ATTRIBUTE_NODE);
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} else {
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ni = name->NodeInfo();
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}
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if (aArray.IndexOf(ni) == aArray.NoIndex) {
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aArray.AppendElement(ni);
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}
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}
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// Search children
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for (i = 0; i < aPrototype->mChildren.Length(); ++i) {
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nsXULPrototypeNode* child = aPrototype->mChildren[i];
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if (child->mType == nsXULPrototypeNode::eType_Element) {
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nsresult rv =
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GetNodeInfos(static_cast<nsXULPrototypeElement*>(child), aArray);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULPrototypeDocument::Write(nsIObjectOutputStream* aStream) {
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nsresult rv;
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rv = aStream->WriteCompoundObject(mURI, NS_GET_IID(nsIURI), true);
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// nsIPrincipal mNodeInfoManager->mPrincipal
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nsresult tmp =
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aStream->WriteObject(mNodeInfoManager->DocumentPrincipal(), true);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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#ifdef DEBUG
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// XXX Worrisome if we're caching things without system principal.
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if (!nsContentUtils::IsSystemPrincipal(
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mNodeInfoManager->DocumentPrincipal())) {
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NS_WARNING("Serializing document without system principal");
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}
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#endif
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// mozilla::dom::NodeInfo table
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nsTArray<RefPtr<mozilla::dom::NodeInfo>> nodeInfos;
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if (mRoot) {
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tmp = GetNodeInfos(mRoot, nodeInfos);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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}
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uint32_t nodeInfoCount = nodeInfos.Length();
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tmp = aStream->Write32(nodeInfoCount);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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uint32_t i;
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for (i = 0; i < nodeInfoCount; ++i) {
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mozilla::dom::NodeInfo* nodeInfo = nodeInfos[i];
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NS_ENSURE_TRUE(nodeInfo, NS_ERROR_FAILURE);
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nsAutoString namespaceURI;
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nodeInfo->GetNamespaceURI(namespaceURI);
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tmp = aStream->WriteWStringZ(namespaceURI.get());
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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nsAutoString prefix;
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nodeInfo->GetPrefix(prefix);
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bool nullPrefix = DOMStringIsNull(prefix);
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tmp = aStream->WriteBoolean(nullPrefix);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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if (!nullPrefix) {
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tmp = aStream->WriteWStringZ(prefix.get());
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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}
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nsAutoString localName;
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nodeInfo->GetName(localName);
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tmp = aStream->WriteWStringZ(localName.get());
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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}
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// Now serialize the document contents
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uint32_t count = mProcessingInstructions.Length();
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for (i = 0; i < count; ++i) {
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nsXULPrototypePI* pi = mProcessingInstructions[i];
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tmp = pi->Serialize(aStream, this, &nodeInfos);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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}
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if (mRoot) {
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tmp = mRoot->Serialize(aStream, this, &nodeInfos);
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if (NS_FAILED(tmp)) {
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rv = tmp;
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}
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}
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return rv;
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}
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//----------------------------------------------------------------------
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//
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nsresult nsXULPrototypeDocument::InitPrincipal(nsIURI* aURI,
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nsIPrincipal* aPrincipal) {
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NS_ENSURE_ARG_POINTER(aURI);
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mURI = aURI;
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mNodeInfoManager->SetDocumentPrincipal(aPrincipal);
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return NS_OK;
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}
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nsIURI* nsXULPrototypeDocument::GetURI() {
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NS_ASSERTION(mURI, "null URI");
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return mURI;
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}
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nsXULPrototypeElement* nsXULPrototypeDocument::GetRootElement() {
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return mRoot;
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}
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void nsXULPrototypeDocument::SetRootElement(nsXULPrototypeElement* aElement) {
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mRoot = aElement;
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}
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nsresult nsXULPrototypeDocument::AddProcessingInstruction(
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nsXULPrototypePI* aPI) {
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MOZ_ASSERT(aPI, "null ptr");
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if (!mProcessingInstructions.AppendElement(aPI)) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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const nsTArray<RefPtr<nsXULPrototypePI>>&
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nsXULPrototypeDocument::GetProcessingInstructions() const {
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return mProcessingInstructions;
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}
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nsIPrincipal* nsXULPrototypeDocument::DocumentPrincipal() {
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MOZ_ASSERT(mNodeInfoManager, "missing nodeInfoManager");
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return mNodeInfoManager->DocumentPrincipal();
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}
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void nsXULPrototypeDocument::SetDocumentPrincipal(nsIPrincipal* aPrincipal) {
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mNodeInfoManager->SetDocumentPrincipal(aPrincipal);
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}
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void nsXULPrototypeDocument::MarkInCCGeneration(uint32_t aCCGeneration) {
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mCCGeneration = aCCGeneration;
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}
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nsNodeInfoManager* nsXULPrototypeDocument::GetNodeInfoManager() {
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return mNodeInfoManager;
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}
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nsresult nsXULPrototypeDocument::AwaitLoadDone(Callback&& aCallback,
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bool* aResult) {
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nsresult rv = NS_OK;
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*aResult = mLoaded;
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if (!mLoaded) {
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rv = mPrototypeWaiters.AppendElement(std::move(aCallback))
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? NS_OK
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: NS_ERROR_OUT_OF_MEMORY; // addrefs
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}
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return rv;
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}
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nsresult nsXULPrototypeDocument::NotifyLoadDone() {
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// Call back to each XUL document that raced to start the same
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// prototype document load, lost the race, but hit the XUL
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// prototype cache because the winner filled the cache with
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// the not-yet-loaded prototype object.
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mLoaded = true;
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for (uint32_t i = mPrototypeWaiters.Length(); i > 0;) {
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--i;
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mPrototypeWaiters[i]();
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}
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mPrototypeWaiters.Clear();
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return NS_OK;
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}
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void nsXULPrototypeDocument::TraceProtos(JSTracer* aTrc) {
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// Only trace the protos once per GC if we are marking.
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if (aTrc->isMarkingTracer()) {
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uint32_t currentGCNumber = aTrc->gcNumberForMarking();
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if (mGCNumber == currentGCNumber) {
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return;
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}
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mGCNumber = currentGCNumber;
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}
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if (mRoot) {
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mRoot->TraceAllScripts(aTrc);
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}
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}
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