gecko-dev/parser/html/nsHtml5DocumentBuilder.cpp
Olli Pettay cc8c87cbc0 Bug 1134648, handle dynamic changes to rel=dns-prefetch, r=bz
--HG--
extra : rebase_source : 817f331da1cfadb0833a14a3a18c5d4769752b79
2015-12-01 19:22:20 +02:00

139 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* 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 "nsHtml5DocumentBuilder.h"
#include "nsIStyleSheetLinkingElement.h"
#include "nsStyleLinkElement.h"
#include "nsScriptLoader.h"
#include "nsIHTMLDocument.h"
NS_IMPL_CYCLE_COLLECTION_INHERITED(nsHtml5DocumentBuilder, nsContentSink,
mOwnedElements)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsHtml5DocumentBuilder)
NS_INTERFACE_MAP_END_INHERITING(nsContentSink)
NS_IMPL_ADDREF_INHERITED(nsHtml5DocumentBuilder, nsContentSink)
NS_IMPL_RELEASE_INHERITED(nsHtml5DocumentBuilder, nsContentSink)
nsHtml5DocumentBuilder::nsHtml5DocumentBuilder(bool aRunsToCompletion)
{
mRunsToCompletion = aRunsToCompletion;
}
nsresult
nsHtml5DocumentBuilder::Init(nsIDocument* aDoc,
nsIURI* aURI,
nsISupports* aContainer,
nsIChannel* aChannel)
{
return nsContentSink::Init(aDoc, aURI, aContainer, aChannel);
}
nsHtml5DocumentBuilder::~nsHtml5DocumentBuilder()
{
}
nsresult
nsHtml5DocumentBuilder::MarkAsBroken(nsresult aReason)
{
mBroken = aReason;
return aReason;
}
void
nsHtml5DocumentBuilder::SetDocumentCharsetAndSource(nsACString& aCharset, int32_t aCharsetSource)
{
if (mDocument) {
mDocument->SetDocumentCharacterSetSource(aCharsetSource);
mDocument->SetDocumentCharacterSet(aCharset);
}
}
void
nsHtml5DocumentBuilder::UpdateStyleSheet(nsIContent* aElement)
{
// Break out of the doc update created by Flush() to zap a runnable
// waiting to call UpdateStyleSheet without the right observer
EndDocUpdate();
if (MOZ_UNLIKELY(!mParser)) {
// EndDocUpdate ran stuff that called nsIParser::Terminate()
return;
}
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(aElement));
NS_ASSERTION(ssle, "Node didn't QI to style.");
ssle->SetEnableUpdates(true);
bool willNotify;
bool isAlternate;
nsresult rv = ssle->UpdateStyleSheet(mRunsToCompletion ? nullptr : this,
&willNotify,
&isAlternate);
if (NS_SUCCEEDED(rv) && willNotify && !isAlternate && !mRunsToCompletion) {
++mPendingSheetCount;
mScriptLoader->AddExecuteBlocker();
}
if (aElement->IsHTMLElement(nsGkAtoms::link)) {
// look for <link rel="next" href="url">
nsAutoString relVal;
aElement->GetAttr(kNameSpaceID_None, nsGkAtoms::rel, relVal);
if (!relVal.IsEmpty()) {
uint32_t linkTypes =
nsStyleLinkElement::ParseLinkTypes(relVal, aElement->NodePrincipal());
bool hasPrefetch = linkTypes & nsStyleLinkElement::ePREFETCH;
if (hasPrefetch || (linkTypes & nsStyleLinkElement::eNEXT)) {
nsAutoString hrefVal;
aElement->GetAttr(kNameSpaceID_None, nsGkAtoms::href, hrefVal);
if (!hrefVal.IsEmpty()) {
PrefetchHref(hrefVal, aElement, hasPrefetch);
}
}
}
}
// Re-open update
BeginDocUpdate();
}
void
nsHtml5DocumentBuilder::SetDocumentMode(nsHtml5DocumentMode m)
{
nsCompatibility mode = eCompatibility_NavQuirks;
switch (m) {
case STANDARDS_MODE:
mode = eCompatibility_FullStandards;
break;
case ALMOST_STANDARDS_MODE:
mode = eCompatibility_AlmostStandards;
break;
case QUIRKS_MODE:
mode = eCompatibility_NavQuirks;
break;
}
nsCOMPtr<nsIHTMLDocument> htmlDocument = do_QueryInterface(mDocument);
NS_ASSERTION(htmlDocument, "Document didn't QI into HTML document.");
htmlDocument->SetCompatibilityMode(mode);
}
// nsContentSink overrides
void
nsHtml5DocumentBuilder::UpdateChildCounts()
{
// No-op
}
nsresult
nsHtml5DocumentBuilder::FlushTags()
{
return NS_OK;
}