зеркало из https://github.com/mozilla/gecko-dev.git
553 строки
17 KiB
C++
553 строки
17 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 "nsContentDLF.h"
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#include "nsIComponentManager.h"
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#include "nsICategoryManager.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/css",
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"text/javascript",
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"application/x-javascript",
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"text/html; x-view-type=view-source",
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"text/plain; x-view-type=view-source",
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"text/css; x-view-type=view-source",
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"text/javascript; x-view-type=view-source",
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"application/x-javascript; x-view-type=view-source",
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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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"text/xml; x-view-type=view-source",
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"application/xml; x-view-type=view-source",
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"application/xhtml+xml; x-view-type=view-source",
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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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"application/vnd.mozilla.xul+xml; x-view-type=view-source",
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"mozilla.application/cached-xul; x-view-type=view-source",
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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/jpg",
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"image/pjpeg",
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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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nsICSSStyleSheet* nsContentDLF::gUAStyleSheet;
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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_ISUPPORTS2(nsContentDLF,
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nsIDocumentLoaderFactory,
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nsIDocStreamLoaderFactory);
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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 (!gUAStyleSheet) {
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// Load the UA style sheet
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewURI(getter_AddRefs(uri), UA_CSS_URL);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsICSSLoader> cssLoader;
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NS_NewCSSLoader(getter_AddRefs(cssLoader));
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if (cssLoader) {
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PRBool complete;
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rv = cssLoader->LoadAgentSheet(uri, gUAStyleSheet, complete, 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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// Check aContentType to see if it's a view-source type
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//
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// If it's a "view-source:", aContentType will be of the form
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//
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// <orig_type>; x-view-type=view-source
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//
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// where <orig_type> can be text/html, text/xml etc.
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//
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nsCAutoString strContentType; strContentType.Append(aContentType);
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PRInt32 idx = strContentType.Find("; x-view-type=view-source", PR_TRUE, 0, -1);
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if(idx != -1)
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{ // Found "; x-view-type=view-source" param in content type.
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// Set aCommand to view-source
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aCommand = "view-source";
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// Null terminate at the ";" in "text/html; x-view-type=view-source"
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// The idea is to end up with the original content type i.e. without
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// the x-view-type param was added to it.
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strContentType.SetCharAt('\0', idx);
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aContentType = strContentType.get(); //This will point to the "original" mime type
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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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NS_ENSURE_ARG(aChannel);
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// It's a view-source. Reset channel's content type to the original
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// type so as not to choke the parser when it asks the channel
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// for the content type during the parse phase
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aChannel->SetContentType(aContentType);
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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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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(NS_STATIC_CAST(nsIStyleSheet*, gUAStyleSheet));
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// Bind the document to the Content Viewer
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nsIContentViewer* cv = NS_STATIC_CAST(nsIContentViewer*, docv.get());
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rv = cv->LoadStart(aDocument);
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NS_ADDREF(*aDocViewerResult = cv);
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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(gUAStyleSheet);
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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->LoadStart(doc);
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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(gUAStyleSheet);
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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->LoadStart(doc);
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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->LoadStart(doc)) )
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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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static NS_DEFINE_IID(kDocumentFactoryImplCID, NS_CONTENT_DOCUMENT_LOADER_FACTORY_CID);
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static nsresult
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RegisterTypes(nsIComponentManager* aCompMgr,
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nsICategoryManager* aCatMgr,
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const char* aCommand,
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nsIFile* aPath,
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const char *aLocation,
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const char *aType,
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char** aTypes)
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{
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nsresult rv = NS_OK;
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while (*aTypes) {
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char contractid[500];
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char* contentType = *aTypes++;
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PR_snprintf(contractid, sizeof(contractid),
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NS_DOCUMENT_LOADER_FACTORY_CONTRACTID_PREFIX "%s;1?type=%s",
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aCommand, contentType);
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#ifdef NOISY_REGISTRY
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printf("Register %s => %s\n", contractid, aPath);
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#endif
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rv = aCompMgr->RegisterComponentWithType(kDocumentFactoryImplCID, "Layout",
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contractid, aPath, aLocation,
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PR_TRUE, PR_TRUE, aType);
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if (NS_FAILED(rv)) break;
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// add the MIME types layotu can handle to the handlers category.
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// this allows users of layout's viewers (the docshell for example)
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// to query the types of viewers layout can create.
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nsXPIDLCString previous;
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rv = aCatMgr->AddCategoryEntry("Gecko-Content-Viewers", contentType,
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contractid,
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PR_TRUE, PR_TRUE, getter_Copies(previous));
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if (NS_FAILED(rv)) break;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsContentDLF::RegisterDocumentFactories(nsIComponentManager* aCompMgr,
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nsIFile* aPath,
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const char *aLocation,
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const char *aType,
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const nsModuleComponentInfo* aInfo)
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{
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nsresult rv;
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nsCOMPtr<nsICategoryManager> catmgr(do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv));
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if (NS_FAILED(rv)) return rv;
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do {
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|
rv = RegisterTypes(aCompMgr, catmgr, "view", aPath, aLocation, aType, gHTMLTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view-source", aPath, aLocation, aType, gHTMLTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view", aPath, aLocation, aType, gXMLTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view-source", aPath, aLocation, aType, gXMLTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view", aPath, aLocation, aType, gImageTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view", aPath, aLocation, aType, gRDFTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
rv = RegisterTypes(aCompMgr, catmgr, "view-source", aPath, aLocation, aType, gRDFTypes);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
} while (PR_FALSE);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsContentDLF::UnregisterDocumentFactories(nsIComponentManager* aCompMgr,
|
|
nsIFile* aPath,
|
|
const char* aRegistryLocation,
|
|
const nsModuleComponentInfo* aInfo)
|
|
{
|
|
// XXXwaterson seems like this leaves the registry pretty dirty.
|
|
return aCompMgr->UnregisterComponentSpec(kDocumentFactoryImplCID, aPath);
|
|
}
|