mirror of
https://github.com/mozilla/gecko-dev.git
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533 lines
16 KiB
C++
533 lines
16 KiB
C++
/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCOMPtr.h"
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#include "nsContentModule.h"
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#include "nsIComponentManager.h"
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#include "nsIDocumentLoader.h"
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#include "nsIDocumentLoaderFactory.h"
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#include "nsIDocument.h"
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#include "nsIDocumentViewer.h"
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#include "nsIURL.h"
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#include "nsICSSStyleSheet.h"
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#include "nsString.h"
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#include "nsContentCID.h"
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#include "prprf.h"
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#include "nsNetUtil.h"
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#include "nsICSSLoader.h"
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#include "nsRDFCID.h"
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#include "nsIRDFResource.h"
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#include "nsIXULContentSink.h"
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#include "nsIDocStreamLoaderFactory.h"
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#define VIEW_SOURCE_HTML
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// URL for the "user agent" style sheet
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#define UA_CSS_URL "resource:/res/ua.css"
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// Factory code for creating variations on html documents
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#undef NOISY_REGISTRY
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static NS_DEFINE_IID(kHTMLDocumentCID, NS_HTMLDOCUMENT_CID);
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static NS_DEFINE_IID(kXMLDocumentCID, NS_XMLDOCUMENT_CID);
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static NS_DEFINE_IID(kImageDocumentCID, NS_IMAGEDOCUMENT_CID);
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static NS_DEFINE_IID(kXULDocumentCID, NS_XULDOCUMENT_CID);
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extern nsresult NS_NewDocumentViewer(nsIDocumentViewer** aResult);
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static char* gHTMLTypes[] = {
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"text/html",
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"text/plain",
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"text/rtf",
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"text/css",
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0
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};
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static char* gXMLTypes[] = {
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"text/xml",
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"application/xml",
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"application/xhtml+xml",
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0
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};
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static char* gRDFTypes[] = {
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"text/rdf",
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"application/vnd.mozilla.xul+xml",
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"mozilla.application/cached-xul",
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0
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};
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static char* gImageTypes[] = {
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"image/gif",
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"image/jpeg",
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"image/png",
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"image/x-png",
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"image/x-art",
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"image/x-jg",
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0
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};
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class nsContentDLF : public nsIDocumentLoaderFactory,
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public nsIDocStreamLoaderFactory
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{
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public:
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nsContentDLF();
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virtual ~nsContentDLF();
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NS_DECL_ISUPPORTS
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// for nsIDocumentLoaderFactory
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NS_IMETHOD CreateInstance(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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const char* aContentType,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer);
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NS_IMETHOD CreateInstanceForDocument(nsISupports* aContainer,
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nsIDocument* aDocument,
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const char *aCommand,
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nsIContentViewer** aDocViewerResult);
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// for nsIDocStreamLoaderFactory
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NS_METHOD CreateInstance(nsIInputStream& aInputStream,
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const char* aContentType,
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const char* aCommand,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIContentViewer** aDocViewer);
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nsresult InitUAStyleSheet();
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nsresult CreateDocument(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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nsISupports* aContainer,
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const nsCID& aDocumentCID,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer);
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nsresult CreateRDFDocument(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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const char* aContentType,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer);
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nsresult CreateXULDocumentFromStream(nsIInputStream& aXULStream,
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const char* aCommand,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIContentViewer** aDocViewer);
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nsresult CreateRDFDocument(nsISupports*,
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nsCOMPtr<nsIDocument>*,
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nsCOMPtr<nsIDocumentViewer>*);
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static nsICSSStyleSheet* GetUAStyleSheet() {
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return nsContentModule::gUAStyleSheet;
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}
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};
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nsresult
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NS_NewContentDocumentLoaderFactory(nsIDocumentLoaderFactory** aResult)
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{
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NS_PRECONDITION(aResult, "null OUT ptr");
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if (!aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsContentDLF* it = new nsContentDLF();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(NS_GET_IID(nsIDocumentLoaderFactory), (void**)aResult);
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}
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nsContentDLF::nsContentDLF()
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{
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NS_INIT_REFCNT();
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}
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nsContentDLF::~nsContentDLF()
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{
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}
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NS_IMPL_ADDREF(nsContentDLF)
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NS_IMPL_RELEASE(nsContentDLF)
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NS_IMETHODIMP
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nsContentDLF::QueryInterface(REFNSIID aIID, void** aInstancePtrResult)
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{
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if (NULL == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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if (aIID.Equals(NS_GET_IID(nsIDocumentLoaderFactory))) {
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nsIDocumentLoaderFactory *tmp = this;
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*aInstancePtrResult = (void*) tmp;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(NS_GET_IID(nsIDocStreamLoaderFactory))) {
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nsIDocStreamLoaderFactory *tmp = this;
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*aInstancePtrResult = (void*) tmp;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(kISupportsIID)) {
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nsIDocumentLoaderFactory *tmp = this;
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nsISupports *tmp2 = tmp;
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*aInstancePtrResult = (void*) tmp2;
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AddRef();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP
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nsContentDLF::CreateInstance(const char *aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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const char* aContentType,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer)
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{
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nsresult rv = NS_OK;
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if (!GetUAStyleSheet()) {
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// Load the UA style sheet
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nsCOMPtr<nsIURI> uaURL;
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rv = NS_NewURI(getter_AddRefs(uaURL), UA_CSS_URL);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsICSSLoader> cssLoader;
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rv = NS_NewCSSLoader(getter_AddRefs(cssLoader));
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if (cssLoader) {
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PRBool complete;
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rv = cssLoader->LoadAgentSheet(uaURL, nsContentModule::gUAStyleSheet, complete,
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nsnull);
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}
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}
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("*** open of %s failed: error=%x\n", UA_CSS_URL, rv);
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#endif
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return rv;
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}
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}
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if(0==PL_strcmp(aCommand,"view-source")) {
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#ifdef VIEW_SOURCE_HTML
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aContentType=gHTMLTypes[0];
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#else
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if(0==PL_strcmp(aContentType,gHTMLTypes[1])) {
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aContentType=gHTMLTypes[0];
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}
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else if(0==PL_strcmp(aContentType,gHTMLTypes[2])) {
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aContentType=gHTMLTypes[0];
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}
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else
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aContentType=gXMLTypes[0];
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#endif
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}
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// Try html
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int typeIndex=0;
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while(gHTMLTypes[typeIndex]) {
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if (0== PL_strcmp(gHTMLTypes[typeIndex++], aContentType)) {
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return CreateDocument(aCommand,
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aChannel, aLoadGroup,
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aContainer, kHTMLDocumentCID,
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aDocListener, aDocViewer);
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}
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}
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// Try XML
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typeIndex = 0;
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while(gXMLTypes[typeIndex]) {
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if (0== PL_strcmp(gXMLTypes[typeIndex++], aContentType)) {
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return CreateDocument(aCommand,
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aChannel, aLoadGroup,
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aContainer, kXMLDocumentCID,
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aDocListener, aDocViewer);
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}
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}
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// Try RDF
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typeIndex = 0;
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while (gRDFTypes[typeIndex]) {
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if (0 == PL_strcmp(gRDFTypes[typeIndex++], aContentType)) {
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return CreateRDFDocument(aCommand,
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aChannel, aLoadGroup,
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aContentType, aContainer,
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aExtraInfo, aDocListener, aDocViewer);
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}
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}
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// Try image types
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typeIndex = 0;
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while(gImageTypes[typeIndex]) {
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if (0== PL_strcmp(gImageTypes[typeIndex++], aContentType)) {
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return CreateDocument(aCommand,
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aChannel, aLoadGroup,
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aContainer, kImageDocumentCID,
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aDocListener, aDocViewer);
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}
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}
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// If we get here, then we weren't able to create anything. Sorry!
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsContentDLF::CreateInstanceForDocument(nsISupports* aContainer,
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nsIDocument* aDocument,
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const char *aCommand,
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nsIContentViewer** aDocViewerResult)
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{
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nsresult rv = NS_ERROR_FAILURE;
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do {
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nsCOMPtr<nsIDocumentViewer> docv;
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// Create the document viewer
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rv = NS_NewDocumentViewer(getter_AddRefs(docv));
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if (NS_FAILED(rv))
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break;
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docv->SetUAStyleSheet(nsContentDLF::GetUAStyleSheet());
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// Bind the document to the Content Viewer
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rv = docv->BindToDocument(aDocument, aCommand);
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*aDocViewerResult = docv;
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NS_IF_ADDREF(*aDocViewerResult);
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} while (PR_FALSE);
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return rv;
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}
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nsresult
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nsContentDLF::CreateDocument(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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nsISupports* aContainer,
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const nsCID& aDocumentCID,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer)
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{
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsIURI> aURL;
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rv = aChannel->GetURI(getter_AddRefs(aURL));
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if (NS_FAILED(rv)) return rv;
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#ifdef NOISY_CREATE_DOC
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if (nsnull != aURL) {
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nsAutoString tmp;
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aURL->ToString(tmp);
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fputs(tmp, stdout);
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printf(": creating document\n");
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}
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#endif
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nsCOMPtr<nsIDocument> doc;
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nsCOMPtr<nsIDocumentViewer> docv;
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do {
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// Create the document
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rv = nsComponentManager::CreateInstance(aDocumentCID, nsnull,
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NS_GET_IID(nsIDocument),
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getter_AddRefs(doc));
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if (NS_FAILED(rv))
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break;
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// Create the document viewer XXX: could reuse document viewer here!
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rv = NS_NewDocumentViewer(getter_AddRefs(docv));
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if (NS_FAILED(rv))
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break;
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docv->SetUAStyleSheet(nsContentDLF::GetUAStyleSheet());
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// Initialize the document to begin loading the data. An
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// nsIStreamListener connected to the parser is returned in
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// aDocListener.
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rv = doc->StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer, aDocListener, PR_TRUE);
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if (NS_FAILED(rv))
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break;
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// Bind the document to the Content Viewer
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rv = docv->BindToDocument(doc, aCommand);
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*aDocViewer = docv;
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NS_IF_ADDREF(*aDocViewer);
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} while (PR_FALSE);
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return rv;
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}
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NS_IMETHODIMP
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nsContentDLF::CreateInstance(nsIInputStream& aInputStream,
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const char* aContentType,
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const char* aCommand,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIContentViewer** aDocViewer)
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{
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nsresult status = NS_ERROR_FAILURE;
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// Try RDF
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int typeIndex = 0;
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while (gRDFTypes[typeIndex]) {
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if (0 == PL_strcmp(gRDFTypes[typeIndex++], aContentType)) {
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return CreateXULDocumentFromStream(aInputStream,
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aCommand,
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aContainer,
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aExtraInfo,
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aDocViewer);
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}
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}
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return status;
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}
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// ...common work for |CreateRDFDocument| and |CreateXULDocumentFromStream|
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nsresult
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nsContentDLF::CreateRDFDocument(nsISupports* aExtraInfo,
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nsCOMPtr<nsIDocument>* doc,
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nsCOMPtr<nsIDocumentViewer>* docv)
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{
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nsresult rv = NS_ERROR_FAILURE;
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// Create the XUL document
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rv = nsComponentManager::CreateInstance(kXULDocumentCID, nsnull,
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NS_GET_IID(nsIDocument),
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getter_AddRefs(*doc));
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if (NS_FAILED(rv)) return rv;
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// Create the image content viewer...
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rv = NS_NewDocumentViewer(getter_AddRefs(*docv));
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if (NS_FAILED(rv)) return rv;
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// Load the UA style sheet if we haven't already done that
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(*docv)->SetUAStyleSheet(nsContentDLF::GetUAStyleSheet());
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return NS_OK;
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}
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// ...note, this RDF document _may_ be XUL :-)
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nsresult
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nsContentDLF::CreateRDFDocument(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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const char* aContentType,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIStreamListener** aDocListener,
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nsIContentViewer** aDocViewer)
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{
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nsCOMPtr<nsIDocument> doc;
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nsCOMPtr<nsIDocumentViewer> docv;
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nsresult rv = CreateRDFDocument(aExtraInfo, address_of(doc), address_of(docv));
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIURI> aURL;
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rv = aChannel->GetURI(getter_AddRefs(aURL));
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if (NS_FAILED(rv)) return rv;
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/*
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* Initialize the document to begin loading the data...
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*
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* An nsIStreamListener connected to the parser is returned in
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* aDocListener.
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*/
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rv = doc->StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer, aDocListener, PR_TRUE);
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if (NS_SUCCEEDED(rv)) {
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/*
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* Bind the document to the Content Viewer...
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*/
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rv = docv->BindToDocument(doc, aCommand);
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*aDocViewer = docv;
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NS_IF_ADDREF(*aDocViewer);
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}
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return rv;
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}
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nsresult
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nsContentDLF::CreateXULDocumentFromStream(nsIInputStream& aXULStream,
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const char* aCommand,
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nsISupports* aContainer,
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nsISupports* aExtraInfo,
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nsIContentViewer** aDocViewer)
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{
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nsresult status = NS_OK;
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#if 0 // XXX dead code; remove
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do
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{
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nsCOMPtr<nsIDocument> doc;
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nsCOMPtr<nsIDocumentViewer> docv;
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if ( NS_FAILED(status = CreateRDFDocument(aExtraInfo, address_of(doc), address_of(docv))) )
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break;
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if ( NS_FAILED(status = docv->BindToDocument(doc, aCommand)) )
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break;
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*aDocViewer = docv;
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NS_IF_ADDREF(*aDocViewer);
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nsCOMPtr<nsIStreamLoadableDocument> loader = do_QueryInterface(doc, &status);
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if ( NS_FAILED(status) )
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break;
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status = loader->LoadFromStream(aXULStream, aContainer, aCommand);
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}
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while (0);
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#endif
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return status;
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}
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nsresult
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nsContentModule::RegisterDocumentFactories(nsIComponentManager* aCompMgr,
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nsIFile* aPath)
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{
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// We do not register view or view-source document factories because
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// that is for layout. Now load-as-data might be a different story...
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return NS_OK;
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}
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static NS_DEFINE_IID(kDocumentFactoryImplCID, NS_CONTENT_DOCUMENT_LOADER_FACTORY_CID);
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void
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nsContentModule::UnregisterDocumentFactories(nsIComponentManager* aCompMgr,
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nsIFile* aPath)
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{
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aCompMgr->UnregisterComponentSpec(kDocumentFactoryImplCID, aPath);
|
|
}
|