mirror of
https://github.com/mozilla/gecko-dev.git
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412 lines
11 KiB
C++
412 lines
11 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 "nsLayoutModule.h"
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#include "nsLayoutCID.h"
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#include "nsIComponentManager.h"
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#include "nsNetUtil.h"
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#include "nsICSSStyleSheet.h"
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#include "nsICSSLoader.h"
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#include "nsHTMLAtoms.h"
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#include "nsCSSKeywords.h" // to addref/release table
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#include "nsCSSProps.h" // to addref/release table
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#include "nsCSSAtoms.h" // to addref/release table
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#include "nsColorNames.h" // to addref/release table
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#ifdef INCLUDE_XUL
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#include "nsXULAtoms.h"
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#endif
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//MathML Mod - RBS
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#ifdef MOZ_MATHML
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#include "nsMathMLAtoms.h"
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#include "nsMathMLOperators.h"
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#endif
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#include "nsLayoutAtoms.h"
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#include "nsDOMCID.h"
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#include "nsIScriptContext.h"
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#include "nsINameSpaceManager.h"
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#include "nsIScriptNameSetRegistry.h"
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#include "nsIScriptNameSpaceManager.h"
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#include "nsIScriptExternalNameSet.h"
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#include "nsIDocumentEncoder.h"
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// XXX
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#include "nsIServiceManager.h"
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#include "nsTextTransformer.h"
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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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static nsLayoutModule *gModule = NULL;
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
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nsIFileSpec* location,
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nsIModule** return_cobj)
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{
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nsresult rv = NS_OK;
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NS_ASSERTION(return_cobj, "Null argument");
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NS_ASSERTION(gModule == NULL, "nsLayoutModule: Module already created.");
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// Create an initialize the layout module instance
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nsLayoutModule *m = new nsLayoutModule();
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if (!m) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Increase refcnt and store away nsIModule interface to m in return_cobj
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rv = m->QueryInterface(nsIModule::GetIID(), (void**)return_cobj);
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if (NS_FAILED(rv)) {
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delete m;
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m = nsnull;
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}
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gModule = m; // WARNING: Weak Reference
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return rv;
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}
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//----------------------------------------------------------------------
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static NS_DEFINE_IID(kIScriptNameSetRegistryIID, NS_ISCRIPTNAMESETREGISTRY_IID);
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static NS_DEFINE_IID(kCScriptNameSetRegistryCID, NS_SCRIPT_NAMESET_REGISTRY_CID);
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static NS_DEFINE_IID(kIScriptNameSpaceManagerIID, NS_ISCRIPTNAMESPACEMANAGER_IID);
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static NS_DEFINE_IID(kIScriptExternalNameSetIID, NS_ISCRIPTEXTERNALNAMESET_IID);
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class LayoutScriptNameSet : public nsIScriptExternalNameSet {
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public:
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LayoutScriptNameSet();
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virtual ~LayoutScriptNameSet();
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NS_DECL_ISUPPORTS
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NS_IMETHOD InitializeClasses(nsIScriptContext* aScriptContext);
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NS_IMETHOD AddNameSet(nsIScriptContext* aScriptContext);
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};
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LayoutScriptNameSet::LayoutScriptNameSet()
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{
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NS_INIT_REFCNT();
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}
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LayoutScriptNameSet::~LayoutScriptNameSet()
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{
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}
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NS_IMPL_ISUPPORTS(LayoutScriptNameSet, kIScriptExternalNameSetIID);
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NS_IMETHODIMP
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LayoutScriptNameSet::InitializeClasses(nsIScriptContext* aScriptContext)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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LayoutScriptNameSet::AddNameSet(nsIScriptContext* aScriptContext)
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{
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nsresult result = NS_OK;
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nsIScriptNameSpaceManager* manager;
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static NS_DEFINE_IID(kHTMLImageElementCID, NS_HTMLIMAGEELEMENT_CID);
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static NS_DEFINE_IID(kHTMLOptionElementCID, NS_HTMLOPTIONELEMENT_CID);
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result = aScriptContext->GetNameSpaceManager(&manager);
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if (NS_OK == result) {
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result = manager->RegisterGlobalName("HTMLImageElement",
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kHTMLImageElementCID,
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PR_TRUE);
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if (NS_FAILED(result)) {
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NS_RELEASE(manager);
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return result;
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}
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result = manager->RegisterGlobalName("HTMLOptionElement",
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kHTMLOptionElementCID,
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PR_TRUE);
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if (NS_FAILED(result)) {
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NS_RELEASE(manager);
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return result;
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}
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NS_RELEASE(manager);
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}
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return result;
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}
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//----------------------------------------------------------------------
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static NS_DEFINE_IID(kIModuleIID, NS_IMODULE_IID);
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nsICSSStyleSheet* nsLayoutModule::gUAStyleSheet;
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nsIScriptNameSetRegistry* nsLayoutModule::gRegistry;
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nsLayoutModule::nsLayoutModule()
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: mInitialized(PR_FALSE)
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{
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NS_INIT_ISUPPORTS();
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}
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nsLayoutModule::~nsLayoutModule()
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{
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Shutdown();
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}
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NS_IMPL_ISUPPORTS(nsLayoutModule, kIModuleIID)
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// Perform our one-time intialization for this module
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nsresult
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nsLayoutModule::Initialize()
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{
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if (mInitialized) {
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return NS_OK;
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}
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mInitialized = PR_TRUE;
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// Register all of our atoms once
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nsCSSAtoms::AddRefAtoms();
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nsCSSKeywords::AddRefTable();
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nsCSSProps::AddRefTable();
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nsColorNames::AddRefTable();
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nsHTMLAtoms::AddRefAtoms();
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nsLayoutAtoms::AddRefAtoms();
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#ifdef INCLUDE_XUL
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nsXULAtoms::AddRefAtoms();
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#endif
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//MathML Mod - RBS
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#ifdef MOZ_MATHML
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nsMathMLOperators::AddRefTable();
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nsMathMLAtoms::AddRefAtoms();
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#endif
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// Load the UA style sheet
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nsCOMPtr<nsIURI> uaURL;
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nsresult 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, 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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// XXX Initialize the script name set thingy-ma-jigger
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if (!gRegistry) {
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rv = nsServiceManager::GetService(kCScriptNameSetRegistryCID,
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kIScriptNameSetRegistryIID,
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(nsISupports**) &gRegistry);
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if (NS_SUCCEEDED(rv)) {
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LayoutScriptNameSet* nameSet = new LayoutScriptNameSet();
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gRegistry->AddExternalNameSet(nameSet);
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}
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}
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rv = nsTextTransformer::Initialize();
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if (NS_FAILED(rv)) {
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return rv;
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}
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return rv;
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}
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// Shutdown this module, releasing all of the module resources
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void
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nsLayoutModule::Shutdown()
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{
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// Release all of our atoms
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nsColorNames::ReleaseTable();
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nsCSSProps::ReleaseTable();
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nsCSSKeywords::ReleaseTable();
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nsCSSAtoms::ReleaseAtoms();
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nsHTMLAtoms::ReleaseAtoms();
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nsLayoutAtoms::ReleaseAtoms();
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#ifdef INCLUDE_XUL
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nsXULAtoms::ReleaseAtoms();
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#endif
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//MathML Mod - RBS
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#ifdef MOZ_MATHML
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nsMathMLOperators::ReleaseTable();
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nsMathMLAtoms::ReleaseAtoms();
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#endif
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nsTextTransformer::Shutdown();
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NS_IF_RELEASE(gRegistry);
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NS_IF_RELEASE(gUAStyleSheet);
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}
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NS_IMETHODIMP
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nsLayoutModule::GetClassObject(nsIComponentManager *aCompMgr,
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const nsCID& aClass,
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const nsIID& aIID,
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void** r_classObj)
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{
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nsresult rv;
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if (!mInitialized) {
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rv = Initialize();
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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nsIFactory* f = new nsLayoutFactory(aClass);
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if (!f) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = f->QueryInterface(aIID, r_classObj);
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if (NS_FAILED(rv)) {
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delete f;
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}
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return rv;
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}
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//----------------------------------------
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struct Components {
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const char* mDescription;
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nsID mCID;
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const char* mProgID;
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};
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// The list of components we register
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static Components gComponents[] = {
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{ "Namespace manager", NS_NAMESPACEMANAGER_CID, nsnull, },
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{ "Event listener manager", NS_EVENTLISTENERMANAGER_CID, nsnull, },
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{ "Frame utility", NS_FRAME_UTIL_CID, nsnull, },
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{ "Print preview context", NS_PRINT_PREVIEW_CONTEXT_CID, nsnull, },
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{ "Layout debugger", NS_LAYOUT_DEBUGGER_CID, nsnull, },
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{ "HTML document", NS_HTMLDOCUMENT_CID, nsnull, },
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{ "HTML style sheet", NS_HTMLSTYLESHEET_CID, nsnull, },
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{ "HTML-CSS style sheet", NS_HTML_CSS_STYLESHEET_CID, nsnull, },
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{ "XML document", NS_XMLDOCUMENT_CID, nsnull, },
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{ "Image document", NS_IMAGEDOCUMENT_CID, nsnull, },
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{ "CSS parser", NS_CSSPARSER_CID, nsnull, },
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{ "CSS loader", NS_CSS_LOADER_CID, nsnull, },
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{ "HTML element factory", NS_HTML_ELEMENT_FACTORY_CID, nsnull, },
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{ "Text element", NS_TEXTNODE_CID, nsnull, },
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{ "XML element factory", NS_XML_ELEMENT_FACTORY_CID, nsnull, },
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{ "Selection", NS_SELECTION_CID, nsnull, },
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{ "Frame selection", NS_FRAMESELECTION_CID, nsnull, },
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{ "Range", NS_RANGE_CID, nsnull, },
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{ "Content iterator", NS_CONTENTITERATOR_CID, nsnull, },
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{ "Subtree iterator", NS_SUBTREEITERATOR_CID, nsnull, },
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// XXX ick
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{ "HTML image element", NS_HTMLIMAGEELEMENT_CID, nsnull, },
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{ "HTML option element", NS_HTMLOPTIONELEMENT_CID, nsnull, },
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{ "Presentation shell", NS_PRESSHELL_CID, nsnull, },
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// XXX end ick
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{ "HTML document encoder", NS_TEXT_ENCODER_CID,
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NS_DOC_ENCODER_PROGID_BASE "text/html", },
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{ "Plaintext document encoder", NS_TEXT_ENCODER_CID,
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NS_DOC_ENCODER_PROGID_BASE "text/plain", },
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{ "XIF document encoder", NS_TEXT_ENCODER_CID,
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NS_DOC_ENCODER_PROGID_BASE "text/xif", },
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};
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#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
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NS_IMETHODIMP
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nsLayoutModule::RegisterSelf(nsIComponentManager *aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation,
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const char* componentType)
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{
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nsresult rv = NS_OK;
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#ifdef DEBUG
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printf("*** Registering layout components\n");
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#endif
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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rv = aCompMgr->RegisterComponentSpec(cp->mCID, cp->mDescription,
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cp->mProgID, aPath, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsLayoutModule: unable to register %s component => %x\n",
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cp->mDescription, rv);
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#endif
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break;
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}
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cp++;
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}
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rv = RegisterDocumentFactories(aCompMgr, aPath);
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return rv;
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}
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NS_IMETHODIMP
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nsLayoutModule::UnregisterSelf(nsIComponentManager* aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation)
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{
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#ifdef DEBUG
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printf("*** Unregistering layout components\n");
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#endif
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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nsresult rv = aCompMgr->UnregisterComponentSpec(cp->mCID, aPath);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsLayoutModule: unable to unregister %s component => %x\n",
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cp->mDescription, rv);
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#endif
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}
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cp++;
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}
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UnregisterDocumentFactories(aCompMgr, aPath);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsLayoutModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
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{
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if (!okToUnload) {
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return NS_ERROR_INVALID_POINTER;
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}
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*okToUnload = PR_FALSE;
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return NS_ERROR_FAILURE;
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}
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