gecko-dev/content/build/nsContentModule.cpp

431 lines
13 KiB
C++

/* -*- 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 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nspr.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsContentModule.h"
#include "nsContentCID.h"
#include "nsContentUtils.h"
#include "nsIComponentManager.h"
#include "nsNetUtil.h"
#include "nsICSSStyleSheet.h"
#include "nsICSSLoader.h"
#include "nsHTMLAtoms.h"
#include "nsCSSKeywords.h" // to addref/release table
#include "nsCSSProps.h" // to addref/release table
#include "nsCSSAtoms.h" // to addref/release table
#include "nsColorNames.h" // to addref/release table
#include "nsLayoutAtoms.h"
#include "nsDOMCID.h"
#include "nsINameSpaceManager.h"
#include "nsICategoryManager.h"
#include "nsIScriptNameSpaceManager.h"
#include "nsIObserver.h"
#include "nsINodeInfo.h"
#include "nsIElementFactory.h"
#include "nsIDocumentEncoder.h"
#include "nsIContentSerializer.h"
#include "nsIHTMLToTextSink.h"
// XXX
#include "nsIServiceManager.h"
#include "nsRange.h"
#include "nsGenericElement.h"
#include "nsContentHTTPStartup.h"
#include "nsContentPolicyUtils.h"
#define PRODUCT_NAME "Gecko"
#define NS_HTMLIMGELEMENT_CONTRACTID \
"@mozilla.org/content/element/html;1?name=img"
#define NS_HTMLOPTIONELEMENT_CONTRACTID \
"@mozilla.org/content/element/html;1?name=option"
#ifdef MOZ_XUL
#include "nsXULAtoms.h"
#include "nsXULContentUtils.h"
#endif
static nsContentModule *gModule = NULL;
extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
nsIFile* location,
nsIModule** return_cobj)
{
nsresult rv = NS_OK;
NS_ASSERTION(return_cobj, "Null argument");
NS_ASSERTION(gModule == NULL, "nsContentModule: Module already created.");
// Create an initialize the Content module instance
nsContentModule *m = new nsContentModule();
if (!m) {
return NS_ERROR_OUT_OF_MEMORY;
}
// Increase refcnt and store away nsIModule interface to m in return_cobj
rv = m->QueryInterface(NS_GET_IID(nsIModule), (void**)return_cobj);
if (NS_FAILED(rv)) {
delete m;
m = nsnull;
}
gModule = m; // WARNING: Weak Reference
return rv;
}
//----------------------------------------------------------------------
nsICSSStyleSheet* nsContentModule::gUAStyleSheet = nsnull;
nsContentModule::nsContentModule()
: mInitialized(PR_FALSE)
{
NS_INIT_ISUPPORTS();
nsCOMPtr<nsIObserverService> observerService =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (observerService) {
nsAutoString topic;
topic.AssignWithConversion(NS_XPCOM_SHUTDOWN_OBSERVER_ID);
observerService->AddObserver(this, topic.GetUnicode());
}
}
nsContentModule::~nsContentModule()
{
Shutdown();
}
NS_IMPL_ISUPPORTS2(nsContentModule, nsIModule, nsIObserver)
// Perform our one-time intialization for this module
nsresult
nsContentModule::Initialize()
{
nsresult rv = NS_OK;
if (mInitialized) {
return NS_OK;
}
mInitialized = PR_TRUE;
// Register all of our atoms once
nsCSSAtoms::AddRefAtoms();
nsCSSKeywords::AddRefTable();
nsCSSProps::AddRefTable();
nsColorNames::AddRefTable();
nsHTMLAtoms::AddRefAtoms();
nsLayoutAtoms::AddRefAtoms();
#ifdef MOZ_XUL
nsXULAtoms::AddRefAtoms();
nsXULContentUtils::Init();
#endif
nsContentUtils::Init();
return rv;
}
// Shutdown this module, releasing all of the module resources
void
nsContentModule::Shutdown()
{
if (!mInitialized) {
return;
}
nsRange::Shutdown();
nsGenericElement::Shutdown();
// Release all of our atoms
nsColorNames::ReleaseTable();
nsCSSProps::ReleaseTable();
nsCSSKeywords::ReleaseTable();
nsCSSAtoms::ReleaseAtoms();
nsHTMLAtoms::ReleaseAtoms();
nsLayoutAtoms::ReleaseAtoms();
#ifdef MOZ_XUL
nsXULContentUtils::Finish();
nsXULAtoms::ReleaseAtoms();
#endif
NS_IF_RELEASE(gUAStyleSheet);
nsContentUtils::Shutdown();
}
NS_IMETHODIMP
nsContentModule::Observe(nsISupports *aSubject, const PRUnichar *aTopic,
const PRUnichar *someData)
{
nsAutoString topic;
topic.AssignWithConversion(NS_XPCOM_SHUTDOWN_OBSERVER_ID);
if (topic.EqualsWithConversion(aTopic)) {
nsContentUtils::Shutdown();
}
return NS_OK;
}
NS_IMETHODIMP
nsContentModule::GetClassObject(nsIComponentManager *aCompMgr,
const nsCID& aClass,
const nsIID& aIID,
void** r_classObj)
{
nsresult rv;
if (!mInitialized) {
rv = Initialize();
if (NS_FAILED(rv)) {
return rv;
}
}
nsCOMPtr<nsIFactory> f = new nsContentFactory(aClass);
if (!f) {
return NS_ERROR_OUT_OF_MEMORY;
}
return f->QueryInterface(aIID, r_classObj);
}
//----------------------------------------
struct Components {
const char* mDescription;
nsID mCID;
const char* mContractID;
};
// The HTML namespace.
// The list of components we register
static Components gComponents[] = {
{ "Namespace manager", NS_NAMESPACEMANAGER_CID, nsnull, },
{ "Event listener manager", NS_EVENTLISTENERMANAGER_CID, nsnull, },
{ "Event state manager", NS_EVENTSTATEMANAGER_CID, nsnull, },
{ "Document Viewer", NS_DOCUMENT_VIEWER_CID, nsnull, },
{ "HTML Style Sheet", NS_HTMLSTYLESHEET_CID, nsnull, },
{ "Style Set", NS_STYLESET_CID, nsnull, },
{ "Frame Selection", NS_FRAMESELECTION_CID, nsnull, },
{ "CSS Style Sheet", NS_CSS_STYLESHEET_CID, nsnull, },
{ "HTML document", NS_HTMLDOCUMENT_CID, nsnull, },
{ "HTML-CSS style sheet", NS_HTML_CSS_STYLESHEET_CID, nsnull, },
{ "DOM implementation", NS_DOM_IMPLEMENTATION_CID, nsnull, },
{ "XML document", NS_XMLDOCUMENT_CID, nsnull, },
{ "Image document", NS_IMAGEDOCUMENT_CID, nsnull, },
{ "CSS parser", NS_CSSPARSER_CID, nsnull, },
{ "CSS loader", NS_CSS_LOADER_CID, nsnull, },
{ "HTML element factory", NS_HTML_ELEMENT_FACTORY_CID, NS_HTML_ELEMENT_FACTORY_CONTRACTID, },
{ "Text element", NS_TEXTNODE_CID, nsnull, },
{ "Anonymous Content", NS_ANONYMOUSCONTENT_CID, nsnull, },
{ "Attribute Content", NS_ATTRIBUTECONTENT_CID, nsnull, },
{ "HTML Attributes", NS_HTMLATTRIBUTES_CID, nsnull, },
{ "XML element factory", NS_XML_ELEMENT_FACTORY_CID, NS_XML_ELEMENT_FACTORY_CONTRACTID, },
{ "Selection", NS_SELECTION_CID, nsnull, },
{ "Dom selection", NS_DOMSELECTION_CID, nsnull, },
{ "Frame selection", NS_FRAMESELECTION_CID, nsnull, },
{ "Range", NS_RANGE_CID, nsnull, },
{ "Range Utils", NS_RANGEUTILS_CID, nsnull, },
{ "Content iterator", NS_CONTENTITERATOR_CID, nsnull, },
{ "Generated Content iterator", NS_GENERATEDCONTENTITERATOR_CID, nsnull, },
{ "Generated Subtree iterator", NS_GENERATEDSUBTREEITERATOR_CID, nsnull, },
{ "Subtree iterator", NS_SUBTREEITERATOR_CID, nsnull, },
// Needed to support "new Option;" and "new Image;" in JavaScript
{ "HTML img element", NS_HTMLIMAGEELEMENT_CID,
NS_HTMLIMGELEMENT_CONTRACTID, },
{ "HTML option element", NS_HTMLOPTIONELEMENT_CID,
NS_HTMLOPTIONELEMENT_CONTRACTID, },
{ "XML document encoder", NS_TEXT_ENCODER_CID,
NS_DOC_ENCODER_CONTRACTID_BASE "text/xml", },
{ "XML document encoder", NS_TEXT_ENCODER_CID,
NS_DOC_ENCODER_CONTRACTID_BASE "application/xml", },
{ "XML document encoder", NS_TEXT_ENCODER_CID,
NS_DOC_ENCODER_CONTRACTID_BASE "application/xhtml+xml", },
{ "HTML document encoder", NS_TEXT_ENCODER_CID,
NS_DOC_ENCODER_CONTRACTID_BASE "text/html", },
{ "Plaintext document encoder", NS_TEXT_ENCODER_CID,
NS_DOC_ENCODER_CONTRACTID_BASE "text/plain", },
{ "HTML copy encoder", NS_HTMLCOPY_TEXT_ENCODER_CID,
NS_HTMLCOPY_ENCODER_CONTRACTID, },
{ "XML content serializer", NS_XMLCONTENTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "text/xml", },
{ "XML content serializer", NS_XMLCONTENTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "application/xml", },
{ "XML content serializer", NS_XMLCONTENTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "application/xhtml+xml", },
{ "HTML content serializer", NS_HTMLCONTENTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "text/html", },
{ "XUL content serializer", NS_XMLCONTENTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "application/vnd.mozilla.xul+xml", },
{ "plaintext content serializer", NS_PLAINTEXTSERIALIZER_CID,
NS_CONTENTSERIALIZER_CONTRACTID_PREFIX "text/plain", },
{ "plaintext sink", NS_PLAINTEXTSERIALIZER_CID,
NS_PLAINTEXTSINK_CONTRACTID, },
{ "XBL Service", NS_XBLSERVICE_CID, "@mozilla.org/xbl;1" },
{ "XBL Binding Manager", NS_BINDINGMANAGER_CID, "@mozilla.org/xbl/binding-manager;1" },
{ "Content policy service", NS_CONTENTPOLICY_CID, NS_CONTENTPOLICY_CONTRACTID },
{ "NodeInfoManager", NS_NODEINFOMANAGER_CID, NS_NODEINFOMANAGER_CONTRACTID },
{ "DOM CSS Computed Style Declaration", NS_COMPUTEDDOMSTYLE_CID,
"@mozilla.org/DOM/Level2/CSS/computedStyleDeclaration;1" },
#ifdef MOZ_XUL
{ "XUL Sort Service", NS_XULSORTSERVICE_CID,
"@mozilla.org/xul/xul-sort-service;1", },
{ "XUL Template Builder", NS_XULTEMPLATEBUILDER_CID,
"@mozilla.org/xul/xul-template-builder;1", },
{ "XUL Outliner Builder", NS_XULOUTLINERBUILDER_CID,
"@mozilla.org/xul/xul-outliner-builder;1", },
{ "XUL Content Sink", NS_XULCONTENTSINK_CID,
"@mozilla.org/xul/xul-content-sink;1", },
{ "XUL Document", NS_XULDOCUMENT_CID,
"@mozilla.org/xul/xul-document;1", },
{ "XUL PopupListener", NS_XULPOPUPLISTENER_CID,
"@mozilla.org/xul/xul-popup-listener;1", },
{ "XUL Controllers", NS_XULCONTROLLERS_CID,
"@mozilla.org/xul/xul-controllers;1", },
{ "XUL Prototype Cache", NS_XULPROTOTYPECACHE_CID,
"@mozilla.org/xul/xul-prototype-cache;1", },
{ "XUL Element Factory", NS_XULELEMENTFACTORY_CID,
NS_ELEMENT_FACTORY_CONTRACTID_PREFIX "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", },
#endif
{ "Controller Command Manager", NS_CONTROLLERCOMMANDMANAGER_CID,
"@mozilla.org/content/controller-command-manager;1", },
{ "Content HTTP Startup Listener", NS_CONTENTHTTPSTARTUP_CID,
NS_CONTENTHTTPSTARTUP_CONTRACTID, },
};
#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
NS_IMETHODIMP
nsContentModule::RegisterSelf(nsIComponentManager *aCompMgr,
nsIFile* aPath,
const char* registryLocation,
const char* componentType)
{
nsresult rv = NS_OK;
#ifdef DEBUG
printf("*** Registering content components\n");
#endif
Components* cp = gComponents;
Components* end = cp + NUM_COMPONENTS;
while (cp < end) {
rv = aCompMgr->RegisterComponentSpec(cp->mCID, cp->mDescription,
cp->mContractID, aPath, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) {
#ifdef DEBUG
printf("nsContentModule: unable to register %s component => %x\n",
cp->mDescription, rv);
#endif
break;
}
cp++;
}
// not fatal if these fail
nsContentHTTPStartup::RegisterHTTPStartup();
rv = RegisterDocumentFactories(aCompMgr, aPath);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsICategoryManager> catman =
do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsXPIDLCString previous;
rv = catman->AddCategoryEntry(JAVASCRIPT_GLOBAL_CONSTRUCTOR_CATEGORY,
"Image", NS_HTMLIMGELEMENT_CONTRACTID,
PR_TRUE, PR_TRUE, getter_Copies(previous));
NS_ENSURE_SUCCESS(rv, rv);
rv = catman->AddCategoryEntry(JAVASCRIPT_GLOBAL_CONSTRUCTOR_CATEGORY,
"Option", NS_HTMLOPTIONELEMENT_CONTRACTID,
PR_TRUE, PR_TRUE, getter_Copies(previous));
return rv;
}
NS_IMETHODIMP
nsContentModule::UnregisterSelf(nsIComponentManager* aCompMgr,
nsIFile* aPath,
const char* registryLocation)
{
#ifdef DEBUG
printf("*** Unregistering content components\n");
#endif
Components* cp = gComponents;
Components* end = cp + NUM_COMPONENTS;
while (cp < end) {
nsresult rv = aCompMgr->UnregisterComponentSpec(cp->mCID, aPath);
if (NS_FAILED(rv)) {
#ifdef DEBUG
printf("nsContentModule: unable to unregister %s component => %x\n",
cp->mDescription, rv);
#endif
}
cp++;
}
nsContentHTTPStartup::UnregisterHTTPStartup();
UnregisterDocumentFactories(aCompMgr, aPath);
return NS_OK;
}
NS_IMETHODIMP
nsContentModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
{
if (!okToUnload) {
return NS_ERROR_INVALID_POINTER;
}
*okToUnload = PR_FALSE;
return NS_ERROR_FAILURE;
}