The Tor Browser: content/html/document/src/MediaDocument.cpp@6474c204b198 (annotated)

content/html/document/src/MediaDocument.cpp@6474c204b198 (annotated)

content/html/document/src/MediaDocument.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- 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 "MediaDocument.h"
 #include "nsGkAtoms.h"
 #include "nsRect.h"
 #include "nsPresContext.h"
 #include "nsIPresShell.h"
 #include "nsIScrollable.h"
 #include "nsViewManager.h"
 #include "nsITextToSubURI.h"
 #include "nsIURL.h"
 #include "nsIContentViewer.h"
 #include "nsIMarkupDocumentViewer.h"
 #include "nsIDocShell.h"
 #include "nsCharsetSource.h" // kCharsetFrom* macro definition
 #include "nsNodeInfoManager.h"
 #include "nsContentUtils.h"
 #include "nsDocElementCreatedNotificationRunner.h"
 #include "mozilla/Services.h"
 #include "nsServiceManagerUtils.h"
 #include "nsIPrincipal.h"
 namespace mozilla {
 namespace dom {
 MediaDocumentStreamListener::MediaDocumentStreamListener(MediaDocument *aDocument)
 {
   mDocument = aDocument;
 }
 MediaDocumentStreamListener::~MediaDocumentStreamListener()
 {
 }
 NS_IMPL_ISUPPORTS(MediaDocumentStreamListener,
                   nsIRequestObserver,
                   nsIStreamListener)
 void
 MediaDocumentStreamListener::SetStreamListener(nsIStreamListener *aListener)
 {
   mNextStream = aListener;
 }
 NS_IMETHODIMP
 MediaDocumentStreamListener::OnStartRequest(nsIRequest* request, nsISupports *ctxt)
 {
   NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
   mDocument->StartLayout();
   if (mNextStream) {
     return mNextStream->OnStartRequest(request, ctxt);
   }
   return NS_BINDING_ABORTED;
 }
 NS_IMETHODIMP
 MediaDocumentStreamListener::OnStopRequest(nsIRequest* request,
                                            nsISupports *ctxt,
                                            nsresult status)
 {
   nsresult rv = NS_OK;
   if (mNextStream) {
     rv = mNextStream->OnStopRequest(request, ctxt, status);
   }
   // No more need for our document so clear our reference and prevent leaks
   mDocument = nullptr;
   return rv;
 }
 NS_IMETHODIMP
 MediaDocumentStreamListener::OnDataAvailable(nsIRequest* request,
                                              nsISupports *ctxt,
                                              nsIInputStream *inStr,
                                              uint64_t sourceOffset,
                                              uint32_t count)
 {
   if (mNextStream) {
     return mNextStream->OnDataAvailable(request, ctxt, inStr, sourceOffset, count);
   }
   return NS_OK;
 }
 // default format names for MediaDocument.
 const char* const MediaDocument::sFormatNames[4] =
 {
   "MediaTitleWithNoInfo",    // eWithNoInfo
   "MediaTitleWithFile",      // eWithFile
   "",                        // eWithDim
   ""                         // eWithDimAndFile
 };
 MediaDocument::MediaDocument()
     : nsHTMLDocument(),
       mDocumentElementInserted(false)
 {
 }
 MediaDocument::~MediaDocument()
 {
 }
 nsresult
 MediaDocument::Init()
 {
   nsresult rv = nsHTMLDocument::Init();
   NS_ENSURE_SUCCESS(rv, rv);
   // Create a bundle for the localization
   nsCOMPtr<nsIStringBundleService> stringService =
     mozilla::services::GetStringBundleService();
   if (stringService) {
     stringService->CreateBundle(NSMEDIADOCUMENT_PROPERTIES_URI,
                                 getter_AddRefs(mStringBundle));
   }
   mIsSyntheticDocument = true;
   return NS_OK;
 }
 nsresult
 MediaDocument::StartDocumentLoad(const char*         aCommand,
                                  nsIChannel*         aChannel,
                                  nsILoadGroup*       aLoadGroup,
                                  nsISupports*        aContainer,
                                  nsIStreamListener** aDocListener,
                                  bool                aReset,
                                  nsIContentSink*     aSink)
 {
   nsresult rv = nsDocument::StartDocumentLoad(aCommand, aChannel, aLoadGroup,
                                               aContainer, aDocListener, aReset,
                                               aSink);
   if (NS_FAILED(rv)) {
     return rv;
   }
   // We try to set the charset of the current document to that of the
   // 'genuine' (as opposed to an intervening 'chrome') parent document
   // that may be in a different window/tab. Even if we fail here,
   // we just return NS_OK because another attempt is made in
   // |UpdateTitleAndCharset| and the worst thing possible is a mangled
   // filename in the titlebar and the file picker.
   // Note that we
   // exclude UTF-8 as 'invalid' because UTF-8 is likely to be the charset
   // of a chrome document that has nothing to do with the actual content
   // whose charset we want to know. Even if "the actual content" is indeed
   // in UTF-8, we don't lose anything because the default empty value is
   // considered synonymous with UTF-8.
   nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aContainer));
   // not being able to set the charset is not critical.
   NS_ENSURE_TRUE(docShell, NS_OK);
   nsAutoCString charset;
   int32_t source;
   nsCOMPtr<nsIPrincipal> principal;
   // opening in a new tab
   docShell->GetParentCharset(charset, &source, getter_AddRefs(principal));
   if (!charset.IsEmpty() &&
       !charset.Equals("UTF-8") &&
       NodePrincipal()->Equals(principal)) {
     SetDocumentCharacterSetSource(source);
     SetDocumentCharacterSet(charset);
   }
   return NS_OK;
 }
 void
 MediaDocument::BecomeInteractive()
 {
   // In principle, if we knew the readyState code to work, we could infer
   // restoration from GetReadyStateEnum() == nsIDocument::READYSTATE_COMPLETE.
   bool restoring = false;
   nsPIDOMWindow* window = GetWindow();
   if (window) {
     nsIDocShell* docShell = window->GetDocShell();
     if (docShell) {
       docShell->GetRestoringDocument(&restoring);
     }
   }
   if (!restoring) {
     MOZ_ASSERT(GetReadyStateEnum() == nsIDocument::READYSTATE_LOADING,
                "Bad readyState");
     SetReadyStateInternal(nsIDocument::READYSTATE_INTERACTIVE);
   }
 }
 nsresult
 MediaDocument::CreateSyntheticDocument()
 {
   // Synthesize an empty html document
   nsresult rv;
   nsCOMPtr<nsINodeInfo> nodeInfo;
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::html, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   nsRefPtr<nsGenericHTMLElement> root = NS_NewHTMLHtmlElement(nodeInfo.forget());
   NS_ENSURE_TRUE(root, NS_ERROR_OUT_OF_MEMORY);
   NS_ASSERTION(GetChildCount() == 0, "Shouldn't have any kids");
   rv = AppendChildTo(root, false);
   NS_ENSURE_SUCCESS(rv, rv);
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::head, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   // Create a <head> so our title has somewhere to live
   nsRefPtr<nsGenericHTMLElement> head = NS_NewHTMLHeadElement(nodeInfo.forget());
   NS_ENSURE_TRUE(head, NS_ERROR_OUT_OF_MEMORY);
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::meta, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   nsRefPtr<nsGenericHTMLElement> metaContent = NS_NewHTMLMetaElement(nodeInfo.forget());
   NS_ENSURE_TRUE(metaContent, NS_ERROR_OUT_OF_MEMORY);
   metaContent->SetAttr(kNameSpaceID_None, nsGkAtoms::name,
                        NS_LITERAL_STRING("viewport"),
                        true);
   metaContent->SetAttr(kNameSpaceID_None, nsGkAtoms::content,
                        NS_LITERAL_STRING("width=device-width; height=device-height;"),
                        true);
   head->AppendChildTo(metaContent, false);
   root->AppendChildTo(head, false);
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::body, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   nsRefPtr<nsGenericHTMLElement> body = NS_NewHTMLBodyElement(nodeInfo.forget());
   NS_ENSURE_TRUE(body, NS_ERROR_OUT_OF_MEMORY);
   root->AppendChildTo(body, false);
   return NS_OK;
 }
 nsresult
 MediaDocument::StartLayout()
 {
   mMayStartLayout = true;
   nsCOMPtr<nsIPresShell> shell = GetShell();
   // Don't mess with the presshell if someone has already handled
   // its initial reflow.
   if (shell && !shell->DidInitialize()) {
     nsRect visibleArea = shell->GetPresContext()->GetVisibleArea();
     nsresult rv = shell->Initialize(visibleArea.width, visibleArea.height);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   return NS_OK;
 }
 void
 MediaDocument::GetFileName(nsAString& aResult)
 {
   aResult.Truncate();
   nsCOMPtr<nsIURL> url = do_QueryInterface(mDocumentURI);
   if (!url)
     return;
   nsAutoCString fileName;
   url->GetFileName(fileName);
   if (fileName.IsEmpty())
     return;
   nsAutoCString docCharset;
   // Now that the charset is set in |StartDocumentLoad| to the charset of
   // the document viewer instead of a bogus value ("ISO-8859-1" set in
   // |nsDocument|'s ctor), the priority is given to the current charset.
   // This is necessary to deal with a media document being opened in a new
   // window or a new tab, in which case |originCharset| of |nsIURI| is not
   // reliable.
   if (mCharacterSetSource != kCharsetUninitialized) {
     docCharset = mCharacterSet;
   } else {
     // resort to |originCharset|
     url->GetOriginCharset(docCharset);
     SetDocumentCharacterSet(docCharset);
   }
   nsresult rv;
   nsCOMPtr<nsITextToSubURI> textToSubURI =
     do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
   if (NS_SUCCEEDED(rv)) {
     // UnEscapeURIForUI always succeeds
     textToSubURI->UnEscapeURIForUI(docCharset, fileName, aResult);
   } else {
     CopyUTF8toUTF16(fileName, aResult);
   }
 }
 nsresult
 MediaDocument::LinkStylesheet(const nsAString& aStylesheet)
 {
   nsCOMPtr<nsINodeInfo> nodeInfo;
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::link, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   nsRefPtr<nsGenericHTMLElement> link = NS_NewHTMLLinkElement(nodeInfo.forget());
   NS_ENSURE_TRUE(link, NS_ERROR_OUT_OF_MEMORY);
   link->SetAttr(kNameSpaceID_None, nsGkAtoms::rel,
                 NS_LITERAL_STRING("stylesheet"), true);
   link->SetAttr(kNameSpaceID_None, nsGkAtoms::href, aStylesheet, true);
   Element* head = GetHeadElement();
   return head->AppendChildTo(link, false);
 }
 void
 MediaDocument::UpdateTitleAndCharset(const nsACString& aTypeStr,
                                      const char* const* aFormatNames,
                                      int32_t aWidth, int32_t aHeight,
                                      const nsAString& aStatus)
 {
   nsXPIDLString fileStr;
   GetFileName(fileStr);
   NS_ConvertASCIItoUTF16 typeStr(aTypeStr);
   nsXPIDLString title;
   if (mStringBundle) {
     // if we got a valid size (not all media have a size)
     if (aWidth != 0 && aHeight != 0) {
       nsAutoString widthStr;
       nsAutoString heightStr;
       widthStr.AppendInt(aWidth);
       heightStr.AppendInt(aHeight);
       // If we got a filename, display it
       if (!fileStr.IsEmpty()) {
         const char16_t *formatStrings[4]  = {fileStr.get(), typeStr.get(),
           widthStr.get(), heightStr.get()};
         NS_ConvertASCIItoUTF16 fmtName(aFormatNames[eWithDimAndFile]);
         mStringBundle->FormatStringFromName(fmtName.get(), formatStrings, 4,
                                             getter_Copies(title));
       }
       else {
         const char16_t *formatStrings[3]  = {typeStr.get(), widthStr.get(),
           heightStr.get()};
         NS_ConvertASCIItoUTF16 fmtName(aFormatNames[eWithDim]);
         mStringBundle->FormatStringFromName(fmtName.get(), formatStrings, 3,
                                             getter_Copies(title));
       }
     }
     else {
     // If we got a filename, display it
       if (!fileStr.IsEmpty()) {
         const char16_t *formatStrings[2] = {fileStr.get(), typeStr.get()};
         NS_ConvertASCIItoUTF16 fmtName(aFormatNames[eWithFile]);
         mStringBundle->FormatStringFromName(fmtName.get(), formatStrings, 2,
                                             getter_Copies(title));
       }
       else {
         const char16_t *formatStrings[1] = {typeStr.get()};
         NS_ConvertASCIItoUTF16 fmtName(aFormatNames[eWithNoInfo]);
         mStringBundle->FormatStringFromName(fmtName.get(), formatStrings, 1,
                                             getter_Copies(title));
       }
     }
   }
   // set it on the document
   if (aStatus.IsEmpty()) {
     SetTitle(title);
   }
   else {
     nsXPIDLString titleWithStatus;
     const nsPromiseFlatString& status = PromiseFlatString(aStatus);
     const char16_t *formatStrings[2] = {title.get(), status.get()};
     NS_NAMED_LITERAL_STRING(fmtName, "TitleWithStatus");
     mStringBundle->FormatStringFromName(fmtName.get(), formatStrings, 2,
                                         getter_Copies(titleWithStatus));
     SetTitle(titleWithStatus);
   }
 }
 void
 MediaDocument::SetScriptGlobalObject(nsIScriptGlobalObject* aGlobalObject)
 {
     nsHTMLDocument::SetScriptGlobalObject(aGlobalObject);
     if (!mDocumentElementInserted && aGlobalObject) {
         mDocumentElementInserted = true;
         nsContentUtils::AddScriptRunner(
             new nsDocElementCreatedNotificationRunner(this));
     }
 }
 } // namespace dom
 } // namespace mozilla

The Tor Browser / annotate

content/html/document/src/MediaDocument.cpp@6474c204b198 (annotated)

content/html/document/src/MediaDocument.cpp