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Adding the architecture for an external transformation engine to hook into Raptor's layout process. One way this architecture can be used is for doing XSL transforms using a 3rd party component that implements the XSL processor. More details will be posted in mozilla.layout.
Currently enabled on windows only. Set MOZ_XSL to 1 in your environment and build mozilla/layout.
This commit is contained in:
nisheeth%netscape.com
parent
be5a7e94a2
commit
dbca200533
@ -27,7 +27,7 @@
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#include "nsIScriptObjectOwner.h"
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#include "nsIURL.h"
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#ifdef NECKO
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#include "nsIURL.h"
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#include "nsIURI.h"
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#include "nsNeckoUtil.h"
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#else
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#include "nsIURLGroup.h"
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@ -58,6 +58,14 @@
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#include "prtime.h"
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#include "prlog.h"
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#include "prmem.h"
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#ifdef XSL
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#include "nsXSLContentSink.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMElement.h"
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#include <windows.h>
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#include "nsISupports.h"
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#include "nsParserCIID.h"
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#endif
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// XXX misnamed header file, but oh well
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#include "nsHTMLTokens.h"
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@ -71,7 +79,6 @@ static char kCSSType[] = "text/css";
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static char kXSLType[] = "text/xsl";
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#endif
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static NS_DEFINE_IID(kIXMLContentSinkIID, NS_IXMLCONTENT_SINK_IID);
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static NS_DEFINE_IID(kIXMLContentIID, NS_IXMLCONTENT_IID);
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static NS_DEFINE_IID(kIHTMLContentContainerIID, NS_IHTMLCONTENTCONTAINER_IID);
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@ -80,6 +87,13 @@ static NS_DEFINE_IID(kIDOMCommentIID, NS_IDOMCOMMENT_IID);
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static NS_DEFINE_IID(kIScrollableViewIID, NS_ISCROLLABLEVIEW_IID);
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static NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
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static NS_DEFINE_IID(kIDOMCDATASectionIID, NS_IDOMCDATASECTION_IID);
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#ifdef XSL
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static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
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static NS_DEFINE_IID(kIDOMElementIID, NS_IDOMELEMENT_IID);
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static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
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static NS_DEFINE_IID(kIObserverIID, NS_IOBSERVER_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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#endif
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static void SetTextStringOnTextNode(const nsString& aTextString, nsIContent* aTextNode);
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@ -141,10 +155,8 @@ nsXMLContentSink::nsXMLContentSink()
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mInScript = PR_FALSE;
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mStyleSheetCount = 0;
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mCSSLoader = nsnull;
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#ifdef XSL
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mXSLState.sheetExists = PR_FALSE;
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mXSLState.sink = nsnull;
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mXSLTransformMediator = nsnull;
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#endif
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}
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@ -179,6 +191,9 @@ nsXMLContentSink::~nsXMLContentSink()
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PR_FREEIF(mText);
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}
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NS_IF_RELEASE(mCSSLoader);
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#ifdef XSL
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NS_IF_RELEASE(mXSLTransformMediator);
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#endif
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}
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nsresult
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@ -219,8 +234,41 @@ nsXMLContentSink::Init(nsIDocument* aDoc,
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return NS_OK;
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}
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#ifndef XSL
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// nsISupports
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NS_IMPL_ISUPPORTS(nsXMLContentSink, kIXMLContentSinkIID)
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#else
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NS_IMPL_THREADSAFE_ADDREF(nsXMLContentSink)
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NS_IMPL_THREADSAFE_RELEASE(nsXMLContentSink)
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nsresult
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nsXMLContentSink::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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nsresult rv = NS_NOINTERFACE;
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kIXMLContentSinkIID)) {
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*aInstancePtr = (void*)(nsIXMLContentSink*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kIObserverIID)) {
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*aInstancePtr = (void*)(nsIObserver*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kISupportsIID)) {
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*aInstancePtr = (void*)(nsISupports*)(nsIXMLContentSink*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return rv;
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}
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#endif
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// nsIContentSink
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NS_IMETHODIMP
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@ -277,26 +325,96 @@ nsXMLContentSink::DidBuildModel(PRInt32 aQualityLevel)
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PopContent();
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#endif
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StartLayout();
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#ifndef XSL
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StartLayoutProcess();
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#else
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nsresult rv;
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if (mXSLTransformMediator) {
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rv = SetupTransformMediator();
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}
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#if 0
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// XXX For now, we don't do incremental loading. We wait
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// till the end to flow the entire document.
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if (nsnull != mDocElement) {
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mDocument->ContentAppended(mDocElement, 0);
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if (!mXSLTransformMediator || NS_FAILED(rv)) {
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mDocument->SetRootContent(mDocElement);
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StartLayoutProcess();
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}
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#endif
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// Drop our reference to the parser to get rid of a circular
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// reference.
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NS_IF_RELEASE(mParser);
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return NS_OK;
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}
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void
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nsXMLContentSink::StartLayoutProcess()
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{
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StartLayout();
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// XXX Should scroll to ref when that makes sense
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// ScrollToRef();
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mDocument->EndLoad();
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// Drop our reference to the parser to get rid of a circular
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// reference.
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NS_IF_RELEASE(mParser);
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return NS_OK;
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}
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#ifdef XSL
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// The observe method is called on completion of the transform. The nsISupports argument is an
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// nsIDOMElement interface to the root node of the output content model.
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NS_IMETHODIMP
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nsXMLContentSink::Observe(nsISupports *aSubject, const PRUnichar *aTopic, const PRUnichar *someData)
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{
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nsIContent* content;
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nsresult rv = NS_OK;
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// Set the output content model on the document
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rv = aSubject->QueryInterface(kIContentIID, (void **) &content);
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if (NS_SUCCEEDED(rv)) {
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mDocument->SetRootContent(content);
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NS_RELEASE(content);
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}
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else
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mDocument->SetRootContent(mDocElement);
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// Start the layout process
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StartLayoutProcess();
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// Reset the observer on the transform mediator
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mXSLTransformMediator->SetTransformObserver(nsnull);
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return rv;
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}
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// Provide the transform mediator with the source document's content
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// model and the output document, and register the XML content sink
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// as the transform observer. The transform mediator will call
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// the nsIObserver::Observe() method on the transform observer once
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// the transform is completed. The nsISupports pointer to the Observe
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// method will be an nsIDOMElement pointer to the root node of the output
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// content model.
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nsresult
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nsXMLContentSink::SetupTransformMediator()
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{
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nsIDOMElement* source;
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nsIDOMDocument* currentDoc;
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nsresult rv = NS_OK;
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rv = mDocElement->QueryInterface(kIDOMElementIID, (void **) &source);
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if (NS_SUCCEEDED(rv)) {
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mXSLTransformMediator->SetSourceContentModel(source);
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rv = mDocument->QueryInterface(kIDOMDocumentIID, (void **) ¤tDoc);
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if (NS_SUCCEEDED(rv)) {
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mXSLTransformMediator->SetCurrentDocument(currentDoc);
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mXSLTransformMediator->SetTransformObserver(this);
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NS_RELEASE(currentDoc);
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}
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NS_RELEASE(source);
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}
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return rv;
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}
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#endif
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NS_IMETHODIMP
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nsXMLContentSink::WillInterrupt(void)
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{
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@ -641,7 +759,13 @@ nsXMLContentSink::OpenContainer(const nsIParserNode& aNode)
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if (nsnull == mDocElement) {
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mDocElement = content;
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NS_ADDREF(mDocElement);
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// For XSL, we need to wait till after the transform
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// to set the root content object. Hence, the following
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// ifndef.
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#ifndef XSL
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mDocument->SetRootContent(mDocElement);
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#endif
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}
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else {
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nsIContent *parent = GetCurrentContent();
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@ -994,86 +1118,6 @@ GetQuotedAttributeValue(nsString& aSource,
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return result;
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}
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#ifdef XSL
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nsresult
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nsXMLContentSink::CreateStyleSheetURL(nsIURI** aUrl,
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const nsAutoString& aHref)
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{
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nsAutoString absURL;
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nsIURI* docURL = mDocument->GetDocumentURL();
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nsILoadGroup* LoadGroup;
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nsresult result = NS_OK;
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result = docURL->GetLoadGroup(&LoadGroup);
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if ((NS_SUCCEEDED(result)) && LoadGroup) {
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result = LoadGroup->CreateURL(aUrl, docURL, aHref, nsnull);
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NS_RELEASE(LoadGroup);
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}
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else {
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#ifndef NECKO
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result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURL(aUrl, absURL);
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}
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#else
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result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURL(aUrl, absURL);
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}
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#endif // NECKO
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}
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NS_RELEASE(docURL);
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return result;
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}
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// Create an XML parser and an XSL content sink and start parsing
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// the XSL stylesheet located at the given URL.
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nsresult
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nsXMLContentSink::LoadXSLStyleSheet(const nsIURI* aUrl)
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{
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nsresult rv = NS_OK;
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static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
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static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
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// Create the XML parser
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rv = nsComponentManager::CreateInstance(kCParserCID,
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nsnull,
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kCParserIID,
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(void **)&parser);
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if (NS_SUCCEEDED(rv)) {
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nsIXSLContentSink* sink;
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// Create the XSL content sink
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rv = NS_NewXSLContentSink(&sink, mDocument, aUrl, mWebShell);
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if (NS_OK == rv) {
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// Set up XSL state in the XML content sink
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mXSLState.sheetExists = PR_TRUE;
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mXSLState.sink = sink;
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// Hook up the content sink to the parser's output and ask the parser
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// to start parsing the URL specified by aURL.
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nsIDTD* theDTD=0;
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NS_NewWellFormed_DTD(&theDTD);
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parser->RegisterDTD(theDTD);
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parser->SetContentSink(sink);
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nsAutoString utf8("UTF-8");
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mDocument->SetDocumentCharacterSet(utf8);
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parser->SetDocumentCharset(utf8, kCharsetFromDocTypeDefault);
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parser->Parse(aUrl);
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// XXX Don't we have to NS_RELEASE() theDTD?
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NS_RELEASE(sink);
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}
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}
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return rv;
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}
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#endif
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static void
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ParseProcessingInstruction(const nsString& aText,
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nsString& aTarget,
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@ -1105,14 +1149,140 @@ static void SplitMimeType(const nsString& aValue, nsString& aType, nsString& aPa
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}
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}
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#ifdef XSL
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nsXMLContentSink::CreateStyleSheetURL(nsIURI** aUrl,
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const nsAutoString& aHref)
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{
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nsAutoString absURL;
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nsIURI* docURL = mDocument->GetDocumentURL();
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nsILoadGroup* LoadGroup;
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nsresult result = NS_OK;
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result = docURL->GetLoadGroup(&LoadGroup);
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if ((NS_SUCCEEDED(result)) && LoadGroup) {
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result = LoadGroup->CreateURL(aUrl, docURL, aHref, nsnull);
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NS_RELEASE(LoadGroup);
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}
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else {
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#ifndef NECKO
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result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURL(aUrl, absURL);
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}
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#else
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result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURL(aUrl, absURL);
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}
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#endif // NECKO
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}
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NS_RELEASE(docURL);
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return result;
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}
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// Create an XML parser and an XSL content sink and start parsing
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// the XSL stylesheet located at the given URL.
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nsresult
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nsXMLContentSink::LoadXSLStyleSheet(nsIURI* aUrl, const nsString& aType)
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{
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nsresult rv = NS_OK;
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nsIParser* parser;
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static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
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static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
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// Create the XML parser
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rv = nsComponentManager::CreateInstance(kCParserCID,
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nsnull,
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kCParserIID,
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(void **)&parser);
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if (NS_SUCCEEDED(rv)) {
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// Create a transform mediator
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rv = NS_NewTransformMediator(&mXSLTransformMediator, aType);
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if (NS_SUCCEEDED(rv)) {
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// Enable the transform mediator. It will start the transform
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// as soon as it has enough state to do so. The state needed is
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// the source content model, the style content model, the current
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// document, and an observer. The XML and XSL content sinks provide
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// this state by calling the various setters on nsITransformMediator.
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mXSLTransformMediator->SetEnabled(PR_TRUE);
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// The XML document owns the transform mediator. Give the mediator to
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// the XML document.
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nsIXMLDocument* xmlDoc;
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rv = mDocument->QueryInterface(kIXMLDocumentIID, (void **) &xmlDoc);
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if (NS_SUCCEEDED(rv)) {
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xmlDoc->SetTransformMediator(mXSLTransformMediator);
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// Create the XSL content sink
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nsIXMLContentSink* sink;
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rv = NS_NewXSLContentSink(&sink, mXSLTransformMediator, mDocument, aUrl, mWebShell);
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if (NS_SUCCEEDED(rv)) {
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// Hook up the content sink to the parser's output and ask the parser
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// to start parsing the URL specified by aURL.
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parser->SetContentSink(sink);
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nsAutoString utf8("UTF-8");
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mDocument->SetDocumentCharacterSet(utf8);
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parser->SetDocumentCharset(utf8, kCharsetFromDocTypeDefault);
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parser->Parse(aUrl);
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// XXX Don't we have to NS_RELEASE() theDTD?
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NS_RELEASE(sink);
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}
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NS_RELEASE(xmlDoc);
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}
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NS_RELEASE(mXSLTransformMediator);
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}
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NS_RELEASE(parser);
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}
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return rv;
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}
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#ifndef XSL
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nsresult
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nsXMLContentSink::ProcessStyleLink(nsIContent* aElement,
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const nsString& aHref, PRBool aAlternate,
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const nsString& aTitle, const nsString& aType,
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const nsString& aMedia)
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{
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nsresult rv = NS_OK;
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if (aType.EqualsIgnoreCase(kXSLType))
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rv = ProcessXSLStyleLink(aElement, aHref, aAlternate, aTitle, aType, aMedia);
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else
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rv = ProcessCSSStyleLink(aElement, aHref, aAlternate, aTitle, aType, aMedia);
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return rv;
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}
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nsresult
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nsXMLContentSink::ProcessXSLStyleLink(nsIContent* aElement,
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const nsString& aHref, PRBool aAlternate,
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const nsString& aTitle, const nsString& aType,
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const nsString& aMedia)
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{
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nsresult rv = NS_OK;
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nsIURI* url;
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rv = CreateStyleSheetURL(&url, aHref);
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if (NS_SUCCEEDED(rv)) {
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rv = LoadXSLStyleSheet(url, aType);
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NS_RELEASE(url);
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}
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return rv;
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}
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#endif
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nsresult
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nsXMLContentSink::ProcessCSSStyleLink(nsIContent* aElement,
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const nsString& aHref, PRBool aAlternate,
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const nsString& aTitle, const nsString& aType,
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const nsString& aMedia)
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{
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nsresult result = NS_OK;
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@ -1172,7 +1342,6 @@ nsXMLContentSink::ProcessStyleLink(nsIContent* aElement,
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return result;
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}
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NS_IMETHODIMP
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nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
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{
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@ -1220,103 +1389,18 @@ nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
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if (NS_OK != result) {
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return result;
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}
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#ifndef XSL
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result = ProcessCSSStyleLink(node, href, alternate.Equals("yes"),
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title, type, media);
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||||
#else
|
||||
result = ProcessStyleLink(node, href, alternate.Equals("yes"),
|
||||
title, type, media);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
#else
|
||||
/* The version of AddProcessingInstruction down below is being hacked on for XSL...
|
||||
Please make changes to the version above this comment.
|
||||
I'll merge the changes when I un-ifdef stuff.
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
|
||||
{
|
||||
nsIURI* url = nsnull;
|
||||
FlushText();
|
||||
|
||||
// XXX For now, we don't add the PI to the content model.
|
||||
// We just check for a style sheet PI
|
||||
nsAutoString text, type, href, title, media;
|
||||
PRInt32 offset;
|
||||
nsresult result = NS_OK;
|
||||
|
||||
text = aNode.GetText();
|
||||
|
||||
offset = text.Find(kStyleSheetPI);
|
||||
// If it's a stylesheet PI...
|
||||
if (0 == offset) {
|
||||
result = GetQuotedAttributeValue(text, "href", href);
|
||||
// If there was an error or there's no href, we can't do
|
||||
// anything with this PI
|
||||
if ((NS_OK != result) || (0 == href.Length())) {
|
||||
return result;
|
||||
}
|
||||
|
||||
result = GetQuotedAttributeValue(text, "type", type);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
result = GetQuotedAttributeValue(text, "title", title);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
title.CompressWhitespace();
|
||||
result = GetQuotedAttributeValue(text, "media", media);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
|
||||
// XXX At some point, we need to have a registry based mechanism
|
||||
// for dealing with loading stylesheets attached to XML documents
|
||||
if (type.Equals(kCSSType) || type.Equals(kXSLType)) {
|
||||
result = CreateStylesheetURL(&url, href);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
if (type.Equals(kCSSType)) {
|
||||
nsAsyncStyleProcessingDataXML* d = new nsAsyncStyleProcessingDataXML;
|
||||
if (nsnull == d) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
d->mTitle.SetString(title);
|
||||
d->mMedia.SetString(media);
|
||||
d->mIsActive = PR_TRUE;
|
||||
d->mURL = url;
|
||||
NS_ADDREF(url);
|
||||
// XXX Need to create PI node
|
||||
d->mElement = nsnull;
|
||||
d->mSink = this;
|
||||
NS_ADDREF(this);
|
||||
|
||||
nsIUnicharStreamLoader* loader;
|
||||
result = NS_NewUnicharStreamLoader(&loader,
|
||||
url,
|
||||
(nsStreamCompleteFunc)nsDoneLoadingStyle,
|
||||
(void *)d);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_ERROR_HTMLPARSER_BLOCK;
|
||||
}
|
||||
}
|
||||
else if (type.Equals(kXSLType)) {
|
||||
result = LoadXSLStyleSheet(url);
|
||||
}
|
||||
|
||||
if (type.Equals(kCSSType) || type.Equals(kXSLType)) {
|
||||
NS_RELEASE(url);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
*/
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
NS_IMETHODIMP
|
||||
|
||||
@ -27,7 +27,7 @@
|
||||
#include "nsIScriptObjectOwner.h"
|
||||
#include "nsIURL.h"
|
||||
#ifdef NECKO
|
||||
#include "nsIURL.h"
|
||||
#include "nsIURI.h"
|
||||
#include "nsNeckoUtil.h"
|
||||
#else
|
||||
#include "nsIURLGroup.h"
|
||||
@ -58,6 +58,14 @@
|
||||
#include "prtime.h"
|
||||
#include "prlog.h"
|
||||
#include "prmem.h"
|
||||
#ifdef XSL
|
||||
#include "nsXSLContentSink.h"
|
||||
#include "nsIDOMDocument.h"
|
||||
#include "nsIDOMElement.h"
|
||||
#include <windows.h>
|
||||
#include "nsISupports.h"
|
||||
#include "nsParserCIID.h"
|
||||
#endif
|
||||
|
||||
// XXX misnamed header file, but oh well
|
||||
#include "nsHTMLTokens.h"
|
||||
@ -71,7 +79,6 @@ static char kCSSType[] = "text/css";
|
||||
static char kXSLType[] = "text/xsl";
|
||||
#endif
|
||||
|
||||
|
||||
static NS_DEFINE_IID(kIXMLContentSinkIID, NS_IXMLCONTENT_SINK_IID);
|
||||
static NS_DEFINE_IID(kIXMLContentIID, NS_IXMLCONTENT_IID);
|
||||
static NS_DEFINE_IID(kIHTMLContentContainerIID, NS_IHTMLCONTENTCONTAINER_IID);
|
||||
@ -80,6 +87,13 @@ static NS_DEFINE_IID(kIDOMCommentIID, NS_IDOMCOMMENT_IID);
|
||||
static NS_DEFINE_IID(kIScrollableViewIID, NS_ISCROLLABLEVIEW_IID);
|
||||
static NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
|
||||
static NS_DEFINE_IID(kIDOMCDATASectionIID, NS_IDOMCDATASECTION_IID);
|
||||
#ifdef XSL
|
||||
static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
|
||||
static NS_DEFINE_IID(kIDOMElementIID, NS_IDOMELEMENT_IID);
|
||||
static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
|
||||
static NS_DEFINE_IID(kIObserverIID, NS_IOBSERVER_IID);
|
||||
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
|
||||
#endif
|
||||
|
||||
static void SetTextStringOnTextNode(const nsString& aTextString, nsIContent* aTextNode);
|
||||
|
||||
@ -141,10 +155,8 @@ nsXMLContentSink::nsXMLContentSink()
|
||||
mInScript = PR_FALSE;
|
||||
mStyleSheetCount = 0;
|
||||
mCSSLoader = nsnull;
|
||||
|
||||
#ifdef XSL
|
||||
mXSLState.sheetExists = PR_FALSE;
|
||||
mXSLState.sink = nsnull;
|
||||
mXSLTransformMediator = nsnull;
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -179,6 +191,9 @@ nsXMLContentSink::~nsXMLContentSink()
|
||||
PR_FREEIF(mText);
|
||||
}
|
||||
NS_IF_RELEASE(mCSSLoader);
|
||||
#ifdef XSL
|
||||
NS_IF_RELEASE(mXSLTransformMediator);
|
||||
#endif
|
||||
}
|
||||
|
||||
nsresult
|
||||
@ -219,8 +234,41 @@ nsXMLContentSink::Init(nsIDocument* aDoc,
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
#ifndef XSL
|
||||
// nsISupports
|
||||
NS_IMPL_ISUPPORTS(nsXMLContentSink, kIXMLContentSinkIID)
|
||||
#else
|
||||
|
||||
NS_IMPL_THREADSAFE_ADDREF(nsXMLContentSink)
|
||||
NS_IMPL_THREADSAFE_RELEASE(nsXMLContentSink)
|
||||
|
||||
nsresult
|
||||
nsXMLContentSink::QueryInterface(REFNSIID aIID, void** aInstancePtr)
|
||||
{
|
||||
nsresult rv = NS_NOINTERFACE;
|
||||
|
||||
if (NULL == aInstancePtr) {
|
||||
return NS_ERROR_NULL_POINTER;
|
||||
}
|
||||
if (aIID.Equals(kIXMLContentSinkIID)) {
|
||||
*aInstancePtr = (void*)(nsIXMLContentSink*)this;
|
||||
NS_ADDREF_THIS();
|
||||
return NS_OK;
|
||||
}
|
||||
if (aIID.Equals(kIObserverIID)) {
|
||||
*aInstancePtr = (void*)(nsIObserver*)this;
|
||||
NS_ADDREF_THIS();
|
||||
return NS_OK;
|
||||
}
|
||||
if (aIID.Equals(kISupportsIID)) {
|
||||
*aInstancePtr = (void*)(nsISupports*)(nsIXMLContentSink*)this;
|
||||
NS_ADDREF_THIS();
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
// nsIContentSink
|
||||
NS_IMETHODIMP
|
||||
@ -277,26 +325,96 @@ nsXMLContentSink::DidBuildModel(PRInt32 aQualityLevel)
|
||||
PopContent();
|
||||
#endif
|
||||
|
||||
StartLayout();
|
||||
#ifndef XSL
|
||||
StartLayoutProcess();
|
||||
#else
|
||||
nsresult rv;
|
||||
if (mXSLTransformMediator) {
|
||||
rv = SetupTransformMediator();
|
||||
}
|
||||
|
||||
#if 0
|
||||
// XXX For now, we don't do incremental loading. We wait
|
||||
// till the end to flow the entire document.
|
||||
if (nsnull != mDocElement) {
|
||||
mDocument->ContentAppended(mDocElement, 0);
|
||||
if (!mXSLTransformMediator || NS_FAILED(rv)) {
|
||||
mDocument->SetRootContent(mDocElement);
|
||||
StartLayoutProcess();
|
||||
}
|
||||
#endif
|
||||
|
||||
// Drop our reference to the parser to get rid of a circular
|
||||
// reference.
|
||||
NS_IF_RELEASE(mParser);
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
void
|
||||
nsXMLContentSink::StartLayoutProcess()
|
||||
{
|
||||
StartLayout();
|
||||
|
||||
// XXX Should scroll to ref when that makes sense
|
||||
// ScrollToRef();
|
||||
|
||||
mDocument->EndLoad();
|
||||
// Drop our reference to the parser to get rid of a circular
|
||||
// reference.
|
||||
NS_IF_RELEASE(mParser);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
#ifdef XSL
|
||||
// The observe method is called on completion of the transform. The nsISupports argument is an
|
||||
// nsIDOMElement interface to the root node of the output content model.
|
||||
NS_IMETHODIMP
|
||||
nsXMLContentSink::Observe(nsISupports *aSubject, const PRUnichar *aTopic, const PRUnichar *someData)
|
||||
{
|
||||
nsIContent* content;
|
||||
nsresult rv = NS_OK;
|
||||
|
||||
// Set the output content model on the document
|
||||
rv = aSubject->QueryInterface(kIContentIID, (void **) &content);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
mDocument->SetRootContent(content);
|
||||
NS_RELEASE(content);
|
||||
}
|
||||
else
|
||||
mDocument->SetRootContent(mDocElement);
|
||||
|
||||
// Start the layout process
|
||||
StartLayoutProcess();
|
||||
|
||||
// Reset the observer on the transform mediator
|
||||
mXSLTransformMediator->SetTransformObserver(nsnull);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
// Provide the transform mediator with the source document's content
|
||||
// model and the output document, and register the XML content sink
|
||||
// as the transform observer. The transform mediator will call
|
||||
// the nsIObserver::Observe() method on the transform observer once
|
||||
// the transform is completed. The nsISupports pointer to the Observe
|
||||
// method will be an nsIDOMElement pointer to the root node of the output
|
||||
// content model.
|
||||
nsresult
|
||||
nsXMLContentSink::SetupTransformMediator()
|
||||
{
|
||||
nsIDOMElement* source;
|
||||
nsIDOMDocument* currentDoc;
|
||||
nsresult rv = NS_OK;
|
||||
|
||||
rv = mDocElement->QueryInterface(kIDOMElementIID, (void **) &source);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
mXSLTransformMediator->SetSourceContentModel(source);
|
||||
rv = mDocument->QueryInterface(kIDOMDocumentIID, (void **) ¤tDoc);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
mXSLTransformMediator->SetCurrentDocument(currentDoc);
|
||||
mXSLTransformMediator->SetTransformObserver(this);
|
||||
NS_RELEASE(currentDoc);
|
||||
}
|
||||
NS_RELEASE(source);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsXMLContentSink::WillInterrupt(void)
|
||||
{
|
||||
@ -641,7 +759,13 @@ nsXMLContentSink::OpenContainer(const nsIParserNode& aNode)
|
||||
if (nsnull == mDocElement) {
|
||||
mDocElement = content;
|
||||
NS_ADDREF(mDocElement);
|
||||
|
||||
// For XSL, we need to wait till after the transform
|
||||
// to set the root content object. Hence, the following
|
||||
// ifndef.
|
||||
#ifndef XSL
|
||||
mDocument->SetRootContent(mDocElement);
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
nsIContent *parent = GetCurrentContent();
|
||||
@ -994,86 +1118,6 @@ GetQuotedAttributeValue(nsString& aSource,
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
#ifdef XSL
|
||||
nsresult
|
||||
nsXMLContentSink::CreateStyleSheetURL(nsIURI** aUrl,
|
||||
const nsAutoString& aHref)
|
||||
{
|
||||
nsAutoString absURL;
|
||||
nsIURI* docURL = mDocument->GetDocumentURL();
|
||||
nsILoadGroup* LoadGroup;
|
||||
nsresult result = NS_OK;
|
||||
|
||||
result = docURL->GetLoadGroup(&LoadGroup);
|
||||
|
||||
if ((NS_SUCCEEDED(result)) && LoadGroup) {
|
||||
result = LoadGroup->CreateURL(aUrl, docURL, aHref, nsnull);
|
||||
NS_RELEASE(LoadGroup);
|
||||
}
|
||||
else {
|
||||
#ifndef NECKO
|
||||
result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_NewURL(aUrl, absURL);
|
||||
}
|
||||
#else
|
||||
result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_NewURL(aUrl, absURL);
|
||||
}
|
||||
#endif // NECKO
|
||||
}
|
||||
NS_RELEASE(docURL);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
// Create an XML parser and an XSL content sink and start parsing
|
||||
// the XSL stylesheet located at the given URL.
|
||||
nsresult
|
||||
nsXMLContentSink::LoadXSLStyleSheet(const nsIURI* aUrl)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
|
||||
static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
|
||||
static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
|
||||
|
||||
// Create the XML parser
|
||||
rv = nsComponentManager::CreateInstance(kCParserCID,
|
||||
nsnull,
|
||||
kCParserIID,
|
||||
(void **)&parser);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
nsIXSLContentSink* sink;
|
||||
|
||||
// Create the XSL content sink
|
||||
rv = NS_NewXSLContentSink(&sink, mDocument, aUrl, mWebShell);
|
||||
if (NS_OK == rv) {
|
||||
// Set up XSL state in the XML content sink
|
||||
mXSLState.sheetExists = PR_TRUE;
|
||||
mXSLState.sink = sink;
|
||||
|
||||
// Hook up the content sink to the parser's output and ask the parser
|
||||
// to start parsing the URL specified by aURL.
|
||||
nsIDTD* theDTD=0;
|
||||
NS_NewWellFormed_DTD(&theDTD);
|
||||
parser->RegisterDTD(theDTD);
|
||||
parser->SetContentSink(sink);
|
||||
|
||||
nsAutoString utf8("UTF-8");
|
||||
mDocument->SetDocumentCharacterSet(utf8);
|
||||
parser->SetDocumentCharset(utf8, kCharsetFromDocTypeDefault);
|
||||
parser->Parse(aUrl);
|
||||
|
||||
// XXX Don't we have to NS_RELEASE() theDTD?
|
||||
NS_RELEASE(sink);
|
||||
}
|
||||
}
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
static void
|
||||
ParseProcessingInstruction(const nsString& aText,
|
||||
nsString& aTarget,
|
||||
@ -1105,14 +1149,140 @@ static void SplitMimeType(const nsString& aValue, nsString& aType, nsString& aPa
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef XSL
|
||||
nsXMLContentSink::CreateStyleSheetURL(nsIURI** aUrl,
|
||||
const nsAutoString& aHref)
|
||||
{
|
||||
nsAutoString absURL;
|
||||
nsIURI* docURL = mDocument->GetDocumentURL();
|
||||
nsILoadGroup* LoadGroup;
|
||||
nsresult result = NS_OK;
|
||||
|
||||
result = docURL->GetLoadGroup(&LoadGroup);
|
||||
|
||||
if ((NS_SUCCEEDED(result)) && LoadGroup) {
|
||||
result = LoadGroup->CreateURL(aUrl, docURL, aHref, nsnull);
|
||||
NS_RELEASE(LoadGroup);
|
||||
}
|
||||
else {
|
||||
#ifndef NECKO
|
||||
result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_NewURL(aUrl, absURL);
|
||||
}
|
||||
#else
|
||||
result = NS_MakeAbsoluteURL(docURL, nsnull, aHref, absURL);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_NewURL(aUrl, absURL);
|
||||
}
|
||||
#endif // NECKO
|
||||
}
|
||||
NS_RELEASE(docURL);
|
||||
return result;
|
||||
}
|
||||
|
||||
// Create an XML parser and an XSL content sink and start parsing
|
||||
// the XSL stylesheet located at the given URL.
|
||||
nsresult
|
||||
nsXMLContentSink::LoadXSLStyleSheet(nsIURI* aUrl, const nsString& aType)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
nsIParser* parser;
|
||||
|
||||
static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
|
||||
static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
|
||||
|
||||
// Create the XML parser
|
||||
rv = nsComponentManager::CreateInstance(kCParserCID,
|
||||
nsnull,
|
||||
kCParserIID,
|
||||
(void **)&parser);
|
||||
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
// Create a transform mediator
|
||||
rv = NS_NewTransformMediator(&mXSLTransformMediator, aType);
|
||||
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
// Enable the transform mediator. It will start the transform
|
||||
// as soon as it has enough state to do so. The state needed is
|
||||
// the source content model, the style content model, the current
|
||||
// document, and an observer. The XML and XSL content sinks provide
|
||||
// this state by calling the various setters on nsITransformMediator.
|
||||
mXSLTransformMediator->SetEnabled(PR_TRUE);
|
||||
|
||||
// The XML document owns the transform mediator. Give the mediator to
|
||||
// the XML document.
|
||||
nsIXMLDocument* xmlDoc;
|
||||
rv = mDocument->QueryInterface(kIXMLDocumentIID, (void **) &xmlDoc);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
xmlDoc->SetTransformMediator(mXSLTransformMediator);
|
||||
|
||||
// Create the XSL content sink
|
||||
nsIXMLContentSink* sink;
|
||||
rv = NS_NewXSLContentSink(&sink, mXSLTransformMediator, mDocument, aUrl, mWebShell);
|
||||
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
// Hook up the content sink to the parser's output and ask the parser
|
||||
// to start parsing the URL specified by aURL.
|
||||
parser->SetContentSink(sink);
|
||||
|
||||
nsAutoString utf8("UTF-8");
|
||||
mDocument->SetDocumentCharacterSet(utf8);
|
||||
parser->SetDocumentCharset(utf8, kCharsetFromDocTypeDefault);
|
||||
parser->Parse(aUrl);
|
||||
|
||||
// XXX Don't we have to NS_RELEASE() theDTD?
|
||||
NS_RELEASE(sink);
|
||||
}
|
||||
NS_RELEASE(xmlDoc);
|
||||
}
|
||||
NS_RELEASE(mXSLTransformMediator);
|
||||
}
|
||||
NS_RELEASE(parser);
|
||||
}
|
||||
return rv;
|
||||
}
|
||||
|
||||
#ifndef XSL
|
||||
nsresult
|
||||
nsXMLContentSink::ProcessStyleLink(nsIContent* aElement,
|
||||
const nsString& aHref, PRBool aAlternate,
|
||||
const nsString& aTitle, const nsString& aType,
|
||||
const nsString& aMedia)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
|
||||
if (aType.EqualsIgnoreCase(kXSLType))
|
||||
rv = ProcessXSLStyleLink(aElement, aHref, aAlternate, aTitle, aType, aMedia);
|
||||
else
|
||||
rv = ProcessCSSStyleLink(aElement, aHref, aAlternate, aTitle, aType, aMedia);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsXMLContentSink::ProcessXSLStyleLink(nsIContent* aElement,
|
||||
const nsString& aHref, PRBool aAlternate,
|
||||
const nsString& aTitle, const nsString& aType,
|
||||
const nsString& aMedia)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
nsIURI* url;
|
||||
|
||||
rv = CreateStyleSheetURL(&url, aHref);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
rv = LoadXSLStyleSheet(url, aType);
|
||||
NS_RELEASE(url);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
nsresult
|
||||
nsXMLContentSink::ProcessCSSStyleLink(nsIContent* aElement,
|
||||
const nsString& aHref, PRBool aAlternate,
|
||||
const nsString& aTitle, const nsString& aType,
|
||||
const nsString& aMedia)
|
||||
{
|
||||
nsresult result = NS_OK;
|
||||
|
||||
@ -1172,7 +1342,6 @@ nsXMLContentSink::ProcessStyleLink(nsIContent* aElement,
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
|
||||
{
|
||||
@ -1220,103 +1389,18 @@ nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
|
||||
#ifndef XSL
|
||||
result = ProcessCSSStyleLink(node, href, alternate.Equals("yes"),
|
||||
title, type, media);
|
||||
#else
|
||||
result = ProcessStyleLink(node, href, alternate.Equals("yes"),
|
||||
title, type, media);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
#else
|
||||
/* The version of AddProcessingInstruction down below is being hacked on for XSL...
|
||||
Please make changes to the version above this comment.
|
||||
I'll merge the changes when I un-ifdef stuff.
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsXMLContentSink::AddProcessingInstruction(const nsIParserNode& aNode)
|
||||
{
|
||||
nsIURI* url = nsnull;
|
||||
FlushText();
|
||||
|
||||
// XXX For now, we don't add the PI to the content model.
|
||||
// We just check for a style sheet PI
|
||||
nsAutoString text, type, href, title, media;
|
||||
PRInt32 offset;
|
||||
nsresult result = NS_OK;
|
||||
|
||||
text = aNode.GetText();
|
||||
|
||||
offset = text.Find(kStyleSheetPI);
|
||||
// If it's a stylesheet PI...
|
||||
if (0 == offset) {
|
||||
result = GetQuotedAttributeValue(text, "href", href);
|
||||
// If there was an error or there's no href, we can't do
|
||||
// anything with this PI
|
||||
if ((NS_OK != result) || (0 == href.Length())) {
|
||||
return result;
|
||||
}
|
||||
|
||||
result = GetQuotedAttributeValue(text, "type", type);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
result = GetQuotedAttributeValue(text, "title", title);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
title.CompressWhitespace();
|
||||
result = GetQuotedAttributeValue(text, "media", media);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
|
||||
// XXX At some point, we need to have a registry based mechanism
|
||||
// for dealing with loading stylesheets attached to XML documents
|
||||
if (type.Equals(kCSSType) || type.Equals(kXSLType)) {
|
||||
result = CreateStylesheetURL(&url, href);
|
||||
if (NS_OK != result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
if (type.Equals(kCSSType)) {
|
||||
nsAsyncStyleProcessingDataXML* d = new nsAsyncStyleProcessingDataXML;
|
||||
if (nsnull == d) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
d->mTitle.SetString(title);
|
||||
d->mMedia.SetString(media);
|
||||
d->mIsActive = PR_TRUE;
|
||||
d->mURL = url;
|
||||
NS_ADDREF(url);
|
||||
// XXX Need to create PI node
|
||||
d->mElement = nsnull;
|
||||
d->mSink = this;
|
||||
NS_ADDREF(this);
|
||||
|
||||
nsIUnicharStreamLoader* loader;
|
||||
result = NS_NewUnicharStreamLoader(&loader,
|
||||
url,
|
||||
(nsStreamCompleteFunc)nsDoneLoadingStyle,
|
||||
(void *)d);
|
||||
if (NS_SUCCEEDED(result)) {
|
||||
result = NS_ERROR_HTMLPARSER_BLOCK;
|
||||
}
|
||||
}
|
||||
else if (type.Equals(kXSLType)) {
|
||||
result = LoadXSLStyleSheet(url);
|
||||
}
|
||||
|
||||
if (type.Equals(kCSSType) || type.Equals(kXSLType)) {
|
||||
NS_RELEASE(url);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
*/
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
NS_IMETHODIMP
|
||||
|
||||
Loading…
Reference in New Issue
Block a user