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gecko-dev/dom/xul/nsXULPrototypeDocument.cpp

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