pjs/layout/build/nsLayoutFactory.cpp

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Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nslayout.h"
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#include "nsLayoutModule.h"
#include "nsIFactory.h"
#include "nsISupports.h"
#include "nsLayoutCID.h"
#include "nsIDocument.h"
#include "nsIHTMLContent.h"
#include "nsITextContent.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIDOMSelection.h"
#include "nsIFrameUtil.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLParts.h"
#include "nsDOMCID.h"
#include "nsIServiceManager.h"
#include "nsICSSParser.h"
#include "nsIHTMLStyleSheet.h"
#include "nsIHTMLCSSStyleSheet.h"
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#include "nsICSSLoader.h"
#include "nsIDOMRange.h"
#include "nsIContentIterator.h"
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#include "nsINameSpaceManager.h"
#include "nsIScriptNameSetRegistry.h"
#include "nsIScriptNameSpaceManager.h"
#include "nsIScriptExternalNameSet.h"
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#include "nsIEventListenerManager.h"
#include "nsILayoutDebugger.h"
#include "nsIHTMLElementFactory.h"
#include "nsIXMLElementFactory.h"
#include "nsIDocumentEncoder.h"
#include "nsCOMPtr.h"
#include "nsIFrameSelection.h"
class nsIDocumentLoaderFactory;
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_IID(kHTMLDocumentCID, NS_HTMLDOCUMENT_CID);
static NS_DEFINE_IID(kXMLDocumentCID, NS_XMLDOCUMENT_CID);
static NS_DEFINE_CID(kXMLElementFactoryCID, NS_XML_ELEMENT_FACTORY_CID);
static NS_DEFINE_IID(kImageDocumentCID, NS_IMAGEDOCUMENT_CID);
static NS_DEFINE_IID(kCSSParserCID, NS_CSSPARSER_CID);
static NS_DEFINE_CID(kHTMLStyleSheetCID, NS_HTMLSTYLESHEET_CID);
static NS_DEFINE_CID(kHTMLCSSStyleSheetCID, NS_HTML_CSS_STYLESHEET_CID);
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static NS_DEFINE_CID(kCSSLoaderCID, NS_CSS_LOADER_CID);
static NS_DEFINE_IID(kHTMLImageElementCID, NS_HTMLIMAGEELEMENT_CID);
static NS_DEFINE_IID(kHTMLOptionElementCID, NS_HTMLOPTIONELEMENT_CID);
static NS_DEFINE_CID(kSelectionCID, NS_SELECTION_CID);
static NS_DEFINE_IID(kFrameSelectionCID, NS_FRAMESELECTION_CID);
static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
static NS_DEFINE_IID(kContentIteratorCID, NS_CONTENTITERATOR_CID);
static NS_DEFINE_IID(kSubtreeIteratorCID, NS_SUBTREEITERATOR_CID);
static NS_DEFINE_CID(kPresShellCID, NS_PRESSHELL_CID);
static NS_DEFINE_CID(kTextNodeCID, NS_TEXTNODE_CID);
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static NS_DEFINE_CID(kNameSpaceManagerCID, NS_NAMESPACEMANAGER_CID);
static NS_DEFINE_CID(kFrameUtilCID, NS_FRAME_UTIL_CID);
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static NS_DEFINE_CID(kEventListenerManagerCID, NS_EVENTLISTENERMANAGER_CID);
static NS_DEFINE_CID(kPrintPreviewContextCID, NS_PRINT_PREVIEW_CONTEXT_CID);
static NS_DEFINE_CID(kLayoutDocumentLoaderFactoryCID, NS_LAYOUT_DOCUMENT_LOADER_FACTORY_CID);
static NS_DEFINE_CID(kLayoutDebuggerCID, NS_LAYOUT_DEBUGGER_CID);
static NS_DEFINE_CID(kHTMLElementFactoryCID, NS_HTML_ELEMENT_FACTORY_CID);
static NS_DEFINE_CID(kTextEncoderCID, NS_TEXT_ENCODER_CID);
extern nsresult NS_NewRangeList(nsIFrameSelection** aResult);
extern nsresult NS_NewRange(nsIDOMRange** aResult);
extern nsresult NS_NewContentIterator(nsIContentIterator** aResult);
extern nsresult NS_NewContentSubtreeIterator(nsIContentIterator** aResult);
extern nsresult NS_NewFrameUtil(nsIFrameUtil** aResult);
extern nsresult NS_NewLayoutDocumentLoaderFactory(nsIDocumentLoaderFactory** aResult);
extern nsresult NS_NewLayoutDebugger(nsILayoutDebugger** aResult);
extern nsresult NS_NewHTMLElementFactory(nsIHTMLElementFactory** aResult);
extern nsresult NS_NewHTMLEncoder(nsIDocumentEncoder** aResult);
extern nsresult NS_NewTextEncoder(nsIDocumentEncoder** aResult);
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//----------------------------------------------------------------------
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
nsLayoutFactory::nsLayoutFactory(const nsCID &aClass)
{
mRefCnt = 0;
mClassID = aClass;
#if 0
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char* cs = aClass.ToString();
printf("+++ Creating layout factory for %s\n", cs);
nsCRT::free(cs);
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#endif
}
nsLayoutFactory::~nsLayoutFactory()
{
#if 0
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char* cs = mClassID.ToString();
printf("+++ Destroying layout factory for %s\n", cs);
nsCRT::free(cs);
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#endif
}
nsresult
nsLayoutFactory::QueryInterface(const nsIID &aIID, void **aResult)
{
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
// Always NULL result, in case of failure
*aResult = NULL;
if (aIID.Equals(kISupportsIID)) {
*aResult = (void *)(nsISupports*)this;
} else if (aIID.Equals(kIFactoryIID)) {
*aResult = (void *)(nsIFactory*)this;
}
if (*aResult == NULL) {
return NS_NOINTERFACE;
}
AddRef(); // Increase reference count for caller
return NS_OK;
}
nsrefcnt
nsLayoutFactory::AddRef()
{
return ++mRefCnt;
}
nsrefcnt
nsLayoutFactory::Release()
{
if (--mRefCnt == 0) {
delete this;
return 0; // Don't access mRefCnt after deleting!
}
return mRefCnt;
}
#ifdef DEBUG
#define LOG_NEW_FAILURE(_msg,_ec) \
printf("nsLayoutFactory::CreateInstance failed for %s: error=%d(0x%x)\n", \
_msg, _ec, _ec)
#else
#define LOG_NEW_FAILURE(_msg,_ec)
#endif
nsresult
nsLayoutFactory::CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult)
{
nsresult res;
PRBool refCounted = PR_TRUE; // XXX What is it with this? It is always PR_TRUE???
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
*aResult = NULL;
nsISupports *inst = nsnull;
// XXX ClassID check happens here
if (mClassID.Equals(kHTMLDocumentCID)) {
res = NS_NewHTMLDocument((nsIDocument **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLDocument", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kXMLDocumentCID)) {
res = NS_NewXMLDocument((nsIDocument **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewXMLDocument", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kImageDocumentCID)) {
res = NS_NewImageDocument((nsIDocument **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewImageDocument", res);
return res;
}
refCounted = PR_TRUE;
}
#if 1
// XXX replace these with nsIHTMLElementFactory calls
else if (mClassID.Equals(kHTMLImageElementCID)) {
res = NS_NewHTMLImageElement((nsIHTMLContent**)&inst, nsHTMLAtoms::img);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLImageElement", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kHTMLOptionElementCID)) {
res = NS_NewHTMLOptionElement((nsIHTMLContent**)&inst, nsHTMLAtoms::option);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLOptionElement", res);
return res;
}
refCounted = PR_TRUE;
}
// XXX why the heck is this exported???? bad bad bad bad
else if (mClassID.Equals(kPresShellCID)) {
res = NS_NewPresShell((nsIPresShell**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewPresShell", res);
return res;
}
refCounted = PR_TRUE;
}
#endif
else if (mClassID.Equals(kFrameSelectionCID)) {
res = NS_NewRangeList((nsIFrameSelection**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewRangeList", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kRangeCID)) {
res = NS_NewRange((nsIDOMRange **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewRange", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kContentIteratorCID)) {
res = NS_NewContentIterator((nsIContentIterator **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewContentIterator", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kSubtreeIteratorCID)) {
res = NS_NewContentSubtreeIterator((nsIContentIterator **)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewContentSubtreeIterator", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kCSSParserCID)) {
res = NS_NewCSSParser((nsICSSParser**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewCSSParser", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kHTMLStyleSheetCID)) {
res = NS_NewHTMLStyleSheet((nsIHTMLStyleSheet**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLStyleSheet", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kHTMLCSSStyleSheetCID)) {
res = NS_NewHTMLCSSStyleSheet((nsIHTMLCSSStyleSheet**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLCSSStyleSheet", res);
return res;
}
refCounted = PR_TRUE;
}
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else if (mClassID.Equals(kCSSLoaderCID)) {
res = NS_NewCSSLoader((nsICSSLoader**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewCSSLoader", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kTextNodeCID)) {
res = NS_NewTextNode((nsIContent**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewTextNode", res);
return res;
}
refCounted = PR_TRUE;
}
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else if (mClassID.Equals(kNameSpaceManagerCID)) {
res = NS_NewNameSpaceManager((nsINameSpaceManager**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewNameSpaceManager", res);
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return res;
}
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refCounted = PR_TRUE;
}
else if (mClassID.Equals(kFrameUtilCID)) {
res = NS_NewFrameUtil((nsIFrameUtil**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewFrameUtil", res);
return res;
}
refCounted = PR_TRUE;
}
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else if (mClassID.Equals(kEventListenerManagerCID)) {
res = NS_NewEventListenerManager((nsIEventListenerManager**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewEventListenerManager", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kPrintPreviewContextCID)) {
res = NS_NewPrintPreviewContext((nsIPresContext**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewPrintPreviewContext", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kLayoutDocumentLoaderFactoryCID)) {
res = NS_NewLayoutDocumentLoaderFactory((nsIDocumentLoaderFactory**)&inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewLayoutDocumentLoaderFactory", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kLayoutDebuggerCID)) {
res = NS_NewLayoutDebugger((nsILayoutDebugger**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewLayoutDebugger", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kHTMLElementFactoryCID)) {
res = NS_NewHTMLElementFactory((nsIHTMLElementFactory**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewHTMLElementFactory", res);
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return res;
}
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refCounted = PR_TRUE;
}
else if (mClassID.Equals(kXMLElementFactoryCID)) {
res = NS_NewXMLElementFactory((nsIXMLElementFactory**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewXMLElementFactory", res);
return res;
}
refCounted = PR_TRUE;
}
else if (mClassID.Equals(kTextEncoderCID)) {
res = NS_NewTextEncoder((nsIDocumentEncoder**) &inst);
if (NS_FAILED(res)) {
LOG_NEW_FAILURE("NS_NewTextEncoder", res);
return res;
}
refCounted = PR_TRUE;
}
else {
return NS_NOINTERFACE;
}
if (inst == NULL) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (!refCounted) {
NS_ADDREF(inst);
}
res = inst->QueryInterface(aIID, aResult);
NS_RELEASE(inst);
if (res != NS_OK) {
// We didn't get the right interface, so clean up
LOG_NEW_FAILURE("final QueryInterface", res);
}
return res;
}
nsresult nsLayoutFactory::LockFactory(PRBool aLock)
{
// Not implemented in simplest case.
return NS_OK;
}