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-rw-r--r--layout/build/nsContentDLF.cpp327
1 files changed, 327 insertions, 0 deletions
diff --git a/layout/build/nsContentDLF.cpp b/layout/build/nsContentDLF.cpp
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+++ b/layout/build/nsContentDLF.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsContentDLF.h"
+
+#include "mozilla/Encoding.h"
+
+#include "nsCOMPtr.h"
+#include "nsDocShell.h"
+#include "nsGenericHTMLElement.h"
+#include "nsGkAtoms.h"
+#include "nsIContentViewer.h"
+#include "nsIDocumentLoaderFactory.h"
+#include "mozilla/dom/Document.h"
+#include "nsNodeInfoManager.h"
+#include "nsString.h"
+#include "nsContentCID.h"
+#include "nsNetUtil.h"
+#include "nsCRT.h"
+#include "nsIViewSourceChannel.h"
+#include "nsContentUtils.h"
+#include "imgLoader.h"
+#include "nsCharsetSource.h"
+#include "nsMimeTypes.h"
+#include "DecoderTraits.h"
+
+// Factory code for creating variations on html documents
+
+#undef NOISY_REGISTRY
+
+using mozilla::dom::Document;
+
+already_AddRefed<nsIContentViewer> NS_NewContentViewer();
+
+static const char* const gHTMLTypes[] = {TEXT_HTML, VIEWSOURCE_CONTENT_TYPE,
+ APPLICATION_XHTML_XML,
+ APPLICATION_WAPXHTML_XML, 0};
+
+static const char* const gXMLTypes[] = {TEXT_XML,
+ APPLICATION_XML,
+ APPLICATION_MATHML_XML,
+ APPLICATION_RDF_XML,
+ TEXT_RDF,
+ 0};
+
+static const char* const gSVGTypes[] = {IMAGE_SVG_XML, 0};
+
+static bool IsTypeInList(const nsACString& aType, const char* const aList[]) {
+ int32_t typeIndex;
+ for (typeIndex = 0; aList[typeIndex]; ++typeIndex) {
+ if (aType.Equals(aList[typeIndex])) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+nsresult NS_NewContentDocumentLoaderFactory(
+ nsIDocumentLoaderFactory** aResult) {
+ MOZ_ASSERT(aResult, "null OUT ptr");
+ if (!aResult) {
+ return NS_ERROR_NULL_POINTER;
+ }
+ RefPtr<nsContentDLF> it = new nsContentDLF();
+ it.forget(aResult);
+ return NS_OK;
+}
+
+nsContentDLF::nsContentDLF() = default;
+
+nsContentDLF::~nsContentDLF() = default;
+
+NS_IMPL_ISUPPORTS(nsContentDLF, nsIDocumentLoaderFactory)
+
+NS_IMETHODIMP
+nsContentDLF::CreateInstance(const char* aCommand, nsIChannel* aChannel,
+ nsILoadGroup* aLoadGroup,
+ const nsACString& aContentType,
+ nsIDocShell* aContainer, nsISupports* aExtraInfo,
+ nsIStreamListener** aDocListener,
+ nsIContentViewer** aDocViewer) {
+ // Make a copy of aContentType, because we're possibly going to change it.
+ nsAutoCString contentType(aContentType);
+
+ // Are we viewing source?
+ nsCOMPtr<nsIViewSourceChannel> viewSourceChannel =
+ do_QueryInterface(aChannel);
+ if (viewSourceChannel) {
+ aCommand = "view-source";
+
+ // The parser freaks out when it sees the content-type that a
+ // view-source channel normally returns. Get the actual content
+ // type of the data. If it's known, use it; otherwise use
+ // text/plain.
+ nsAutoCString type;
+ mozilla::Unused << viewSourceChannel->GetOriginalContentType(type);
+ bool knownType = (!type.EqualsLiteral(VIEWSOURCE_CONTENT_TYPE) &&
+ IsTypeInList(type, gHTMLTypes)) ||
+ nsContentUtils::IsPlainTextType(type) ||
+ IsTypeInList(type, gXMLTypes) ||
+ IsTypeInList(type, gSVGTypes) ||
+ IsTypeInList(type, gXMLTypes);
+
+ if (knownType) {
+ viewSourceChannel->SetContentType(type);
+ } else if (IsImageContentType(type)) {
+ // If it's an image, we want to display it the same way we normally would.
+ contentType = type;
+ } else {
+ viewSourceChannel->SetContentType(nsLiteralCString(TEXT_PLAIN));
+ }
+ } else if (aContentType.EqualsLiteral(VIEWSOURCE_CONTENT_TYPE)) {
+ aChannel->SetContentType(nsLiteralCString(TEXT_PLAIN));
+ contentType = TEXT_PLAIN;
+ }
+
+ nsresult rv;
+ bool imageDocument = false;
+ // Try html or plaintext; both use the same document CID
+ if (IsTypeInList(contentType, gHTMLTypes) ||
+ nsContentUtils::IsPlainTextType(contentType)) {
+ rv = CreateDocument(
+ aCommand, aChannel, aLoadGroup, aContainer,
+ []() -> already_AddRefed<Document> {
+ RefPtr<Document> doc;
+ nsresult rv = NS_NewHTMLDocument(getter_AddRefs(doc));
+ NS_ENSURE_SUCCESS(rv, nullptr);
+ return doc.forget();
+ },
+ aDocListener, aDocViewer);
+ } // Try XML
+ else if (IsTypeInList(contentType, gXMLTypes)) {
+ rv = CreateDocument(
+ aCommand, aChannel, aLoadGroup, aContainer,
+ []() -> already_AddRefed<Document> {
+ RefPtr<Document> doc;
+ nsresult rv = NS_NewXMLDocument(getter_AddRefs(doc));
+ NS_ENSURE_SUCCESS(rv, nullptr);
+ return doc.forget();
+ },
+ aDocListener, aDocViewer);
+ } // Try SVG
+ else if (IsTypeInList(contentType, gSVGTypes)) {
+ rv = CreateDocument(
+ aCommand, aChannel, aLoadGroup, aContainer,
+ []() -> already_AddRefed<Document> {
+ RefPtr<Document> doc;
+ nsresult rv = NS_NewSVGDocument(getter_AddRefs(doc));
+ NS_ENSURE_SUCCESS(rv, nullptr);
+ return doc.forget();
+ },
+ aDocListener, aDocViewer);
+ } else if (mozilla::DecoderTraits::ShouldHandleMediaType(
+ contentType.get(),
+ /* DecoderDoctorDiagnostics* */ nullptr)) {
+ rv = CreateDocument(
+ aCommand, aChannel, aLoadGroup, aContainer,
+ []() -> already_AddRefed<Document> {
+ RefPtr<Document> doc;
+ nsresult rv = NS_NewVideoDocument(getter_AddRefs(doc));
+ NS_ENSURE_SUCCESS(rv, nullptr);
+ return doc.forget();
+ },
+ aDocListener, aDocViewer);
+ } // Try image types
+ else if (IsImageContentType(contentType)) {
+ imageDocument = true;
+ rv = CreateDocument(
+ aCommand, aChannel, aLoadGroup, aContainer,
+ []() -> already_AddRefed<Document> {
+ RefPtr<Document> doc;
+ nsresult rv = NS_NewImageDocument(getter_AddRefs(doc));
+ NS_ENSURE_SUCCESS(rv, nullptr);
+ return doc.forget();
+ },
+ aDocListener, aDocViewer);
+ } else {
+ // If we get here, then we weren't able to create anything. Sorry!
+ return NS_ERROR_FAILURE;
+ }
+
+ if (NS_SUCCEEDED(rv) && !imageDocument) {
+ Document* doc = (*aDocViewer)->GetDocument();
+ MOZ_ASSERT(doc);
+ doc->MakeBrowsingContextNonSynthetic();
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsContentDLF::CreateInstanceForDocument(nsISupports* aContainer,
+ Document* aDocument,
+ const char* aCommand,
+ nsIContentViewer** aContentViewer) {
+ MOZ_ASSERT(aDocument);
+
+ nsCOMPtr<nsIContentViewer> contentViewer = NS_NewContentViewer();
+
+ // Bind the document to the Content Viewer
+ contentViewer->LoadStart(aDocument);
+ contentViewer.forget(aContentViewer);
+ return NS_OK;
+}
+
+/* static */
+already_AddRefed<Document> nsContentDLF::CreateBlankDocument(
+ nsILoadGroup* aLoadGroup, nsIPrincipal* aPrincipal,
+ nsIPrincipal* aPartitionedPrincipal, nsDocShell* aContainer) {
+ // create a new blank HTML document
+ RefPtr<Document> blankDoc;
+ mozilla::Unused << NS_NewHTMLDocument(getter_AddRefs(blankDoc));
+
+ if (!blankDoc) {
+ return nullptr;
+ }
+
+ // initialize
+ nsCOMPtr<nsIURI> uri;
+ NS_NewURI(getter_AddRefs(uri), "about:blank"_ns);
+ if (!uri) {
+ return nullptr;
+ }
+ blankDoc->ResetToURI(uri, aLoadGroup, aPrincipal, aPartitionedPrincipal);
+ blankDoc->SetContainer(aContainer);
+
+ // add some simple content structure
+ nsNodeInfoManager* nim = blankDoc->NodeInfoManager();
+
+ RefPtr<mozilla::dom::NodeInfo> htmlNodeInfo;
+
+ // generate an html html element
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::html, 0, kNameSpaceID_XHTML,
+ nsINode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> htmlElement =
+ NS_NewHTMLHtmlElement(htmlNodeInfo.forget());
+
+ // generate an html head element
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::head, 0, kNameSpaceID_XHTML,
+ nsINode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> headElement =
+ NS_NewHTMLHeadElement(htmlNodeInfo.forget());
+
+ // generate an html body elemment
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::body, 0, kNameSpaceID_XHTML,
+ nsINode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> bodyElement =
+ NS_NewHTMLBodyElement(htmlNodeInfo.forget());
+
+ // blat in the structure
+ NS_ASSERTION(blankDoc->GetChildCount() == 0, "Shouldn't have children");
+ if (!htmlElement || !headElement || !bodyElement) {
+ return nullptr;
+ }
+
+ mozilla::IgnoredErrorResult rv;
+ blankDoc->AppendChildTo(htmlElement, false, rv);
+ if (rv.Failed()) {
+ return nullptr;
+ }
+
+ htmlElement->AppendChildTo(headElement, false, rv);
+ if (rv.Failed()) {
+ return nullptr;
+ }
+
+ // XXXbz Why not notifying here?
+ htmlElement->AppendChildTo(bodyElement, false, rv);
+ if (rv.Failed()) {
+ return nullptr;
+ }
+
+ // add a nice bow
+ blankDoc->SetDocumentCharacterSetSource(kCharsetFromDocTypeDefault);
+ blankDoc->SetDocumentCharacterSet(UTF_8_ENCODING);
+ return blankDoc.forget();
+}
+
+nsresult nsContentDLF::CreateDocument(
+ const char* aCommand, nsIChannel* aChannel, nsILoadGroup* aLoadGroup,
+ nsIDocShell* aContainer, nsContentDLF::DocumentCreator aDocumentCreator,
+ nsIStreamListener** aDocListener, nsIContentViewer** aContentViewer) {
+ MOZ_ASSERT(aDocumentCreator);
+
+ nsresult rv = NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIURI> aURL;
+ rv = aChannel->GetURI(getter_AddRefs(aURL));
+ if (NS_FAILED(rv)) return rv;
+
+#ifdef NOISY_CREATE_DOC
+ if (nullptr != aURL) {
+ nsAutoString tmp;
+ aURL->ToString(tmp);
+ fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
+ printf(": creating document\n");
+ }
+#endif
+
+ // Create the document
+ RefPtr<Document> doc = aDocumentCreator();
+ NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+ // Create the content viewer XXX: could reuse content viewer here!
+ nsCOMPtr<nsIContentViewer> contentViewer = NS_NewContentViewer();
+
+ doc->SetContainer(static_cast<nsDocShell*>(aContainer));
+
+ // Initialize the document to begin loading the data. An
+ // nsIStreamListener connected to the parser is returned in
+ // aDocListener.
+ rv = doc->StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer,
+ aDocListener, true);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Bind the document to the Content Viewer
+ contentViewer->LoadStart(doc);
+ contentViewer.forget(aContentViewer);
+ return NS_OK;
+}
+
+bool nsContentDLF::IsImageContentType(const nsACString& aContentType) {
+ return imgLoader::SupportImageWithMimeType(aContentType);
+}