зеркало из https://github.com/mozilla/gecko-dev.git
Updated to use nsIModule
This commit is contained in:
tonyr%fbdesigns.com
Родитель
df4935b698
Коммит
cde80c93b8
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@ -15,200 +15,267 @@
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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A sample of XPConnect. This file contains the XPCOM factory the
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creates for SampleImpl objects.
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*/
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#include "nsCOMPtr.h"
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#include "nscore.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsXPComFactory.h"
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#include "nsIModule.h"
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#include "nsIGenericFactory.h"
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#include "nsIImportService.h"
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#include "ImportDebug.h"
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
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static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
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static NS_DEFINE_CID(kImportServiceCID, NS_IMPORTSERVICE_CID);
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extern nsresult NS_NewImportService(nsIImportService** aImportService);
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class ImportFactoryImpl : public nsIFactory
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// Module implementation for the import service library
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class nsImportServiceModule : public nsIModule
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{
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public:
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ImportFactoryImpl(const nsCID &aClass, const char* className, const char* progID);
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nsImportServiceModule();
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virtual ~nsImportServiceModule();
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// nsISupports methods
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NS_DECL_ISUPPORTS
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// nsIFactory methods
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NS_IMETHOD CreateInstance(nsISupports *aOuter,
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const nsIID &aIID,
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void **aResult);
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NS_IMETHOD LockFactory(PRBool aLock);
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NS_DECL_NSIMODULE
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protected:
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virtual ~ImportFactoryImpl();
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nsresult Initialize();
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protected:
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nsCID mClassID;
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const char* mClassName;
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const char* mProgID;
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void Shutdown();
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PRBool mInitialized;
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nsCOMPtr<nsIGenericFactory> mFactory;
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};
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////////////////////////////////////////////////////////////////////////
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//----------------------------------------------------------------------
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ImportFactoryImpl::ImportFactoryImpl(const nsCID &aClass,
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const char* className,
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const char* progID)
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: mClassID(aClass), mClassName(className), mProgID(progID)
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{
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NS_INIT_REFCNT();
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// Functions used to create new instances of a given object by the
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// generic factory.
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#define MAKE_CTOR(_name) \
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static NS_IMETHODIMP \
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CreateNew##_name(nsISupports* aOuter, REFNSIID aIID, void **aResult) \
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{ \
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if (!aResult) { \
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return NS_ERROR_INVALID_POINTER; \
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} \
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if (aOuter) { \
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*aResult = nsnull; \
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return NS_ERROR_NO_AGGREGATION; \
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} \
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nsI##_name* inst; \
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nsresult rv = NS_New##_name(&inst); \
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if (NS_FAILED(rv)) { \
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*aResult = nsnull; \
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return rv; \
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} \
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rv = inst->QueryInterface(aIID, aResult); \
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if (NS_FAILED(rv)) { \
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*aResult = nsnull; \
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} \
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NS_RELEASE(inst); /* get rid of extra refcnt */ \
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return rv; \
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}
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ImportFactoryImpl::~ImportFactoryImpl()
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MAKE_CTOR(ImportService)
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//----------------------------------------------------------------------
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static NS_DEFINE_IID(kIModuleIID, NS_IMODULE_IID);
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nsImportServiceModule::nsImportServiceModule()
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: mInitialized(PR_FALSE)
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{
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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NS_INIT_ISUPPORTS();
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}
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NS_IMETHODIMP
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ImportFactoryImpl::QueryInterface(const nsIID &aIID, void **aResult)
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nsImportServiceModule::~nsImportServiceModule()
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{
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if (! aResult)
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return NS_ERROR_NULL_POINTER;
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Shutdown();
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}
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// Always NULL result, in case of failure
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*aResult = nsnull;
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NS_IMPL_ISUPPORTS(nsImportServiceModule, kIModuleIID)
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if (aIID.Equals(kISupportsIID)) {
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*aResult = NS_STATIC_CAST(nsISupports*, this);
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AddRef();
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return NS_OK;
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} else if (aIID.Equals(kIFactoryIID)) {
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*aResult = NS_STATIC_CAST(nsIFactory*, this);
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AddRef();
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// Perform our one-time intialization for this module
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nsresult
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nsImportServiceModule::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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return NS_NOINTERFACE;
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mInitialized = PR_TRUE;
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return NS_OK;
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}
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NS_IMPL_ADDREF(ImportFactoryImpl);
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NS_IMPL_RELEASE(ImportFactoryImpl);
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NS_IMETHODIMP
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ImportFactoryImpl::CreateInstance(nsISupports *aOuter,
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const nsIID &aIID,
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void **aResult)
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// Shutdown this module, releasing all of the module resources
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void
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nsImportServiceModule::Shutdown()
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{
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if (! aResult)
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return NS_ERROR_NULL_POINTER;
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if (aOuter)
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return NS_ERROR_NO_AGGREGATION;
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*aResult = nsnull;
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// Release the factory object
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mFactory = nsnull;
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}
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// Create a factory object for creating instances of aClass.
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NS_IMETHODIMP
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nsImportServiceModule::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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nsISupports *inst = nsnull;
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if (mClassID.Equals( kImportServiceCID)) {
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if (NS_FAILED(rv = NS_NewImportService((nsIImportService**) &inst)))
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return rv;
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// Defensive programming: Initialize *r_classObj in case of error below
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if (!r_classObj) {
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return NS_ERROR_INVALID_POINTER;
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}
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*r_classObj = NULL;
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// Do one-time-only initialization if necessary
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if (!mInitialized) {
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rv = Initialize();
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if (NS_FAILED(rv)) {
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// Initialization failed! yikes!
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return rv;
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}
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}
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// Choose the appropriate factory, based on the desired instance
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// class type (aClass).
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nsCOMPtr<nsIGenericFactory> fact;
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if (aClass.Equals(kImportServiceCID)) {
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if (!mFactory) {
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// Create and save away the factory object for creating
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// new instances of Sample. This way if we are called
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// again for the factory, we won't need to create a new
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// one.
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rv = NS_NewGenericFactory(getter_AddRefs(mFactory),
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CreateNewImportService);
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}
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fact = mFactory;
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}
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else {
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return NS_ERROR_NO_INTERFACE;
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rv = NS_ERROR_FACTORY_NOT_REGISTERED;
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#ifdef DEBUG
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char* cs = aClass.ToString();
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printf("+++ nsImportServiceModule: unable to create factory for %s\n", cs);
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nsCRT::free(cs);
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#endif
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}
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if (! inst)
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return NS_ERROR_OUT_OF_MEMORY;
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if (NS_FAILED(rv = inst->QueryInterface(aIID, aResult))) {
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// We didn't get the right interface.
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NS_ERROR("didn't support the interface you wanted");
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if (fact) {
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rv = fact->QueryInterface(aIID, r_classObj);
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}
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NS_IF_RELEASE(inst);
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return rv;
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}
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nsresult ImportFactoryImpl::LockFactory(PRBool aLock)
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//----------------------------------------
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struct Components {
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const char* mDescription;
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const 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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{ "Import Service Component", &kImportServiceCID,
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"component://mozilla/import/import-service", },
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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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nsImportServiceModule::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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// Not implemented in simplest case.
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nsresult rv = NS_OK;
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#ifdef DEBUG
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printf("*** Registering ImportService 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,
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PR_TRUE);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsImportServiceModule: 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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return rv;
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}
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NS_IMETHODIMP
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nsImportServiceModule::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 ImportService 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("nsImportServiceModule: 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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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////
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// return the proper factory to the caller
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extern "C" PR_IMPLEMENT(nsresult)
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NSGetFactory(nsISupports* aServMgr,
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const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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nsIFactory **aFactory)
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NS_IMETHODIMP
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nsImportServiceModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
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{
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if (! aFactory)
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return NS_ERROR_NULL_POINTER;
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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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ImportFactoryImpl* factory = new ImportFactoryImpl(aClass, aClassName, aProgID);
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if (factory == nsnull)
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//----------------------------------------------------------------------
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static nsImportServiceModule *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, "nsImportServiceModule: Module already created.");
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// Create an initialize the layout module instance
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nsImportServiceModule *m = new nsImportServiceModule();
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if (!m) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(factory);
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*aFactory = factory;
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return NS_OK;
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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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extern "C" PR_IMPLEMENT(nsresult)
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NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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NS_WITH_SERVICE1(nsIComponentManager, compMgr, servMgr, kComponentManagerCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->RegisterComponent(kImportServiceCID,
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"Import Service",
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"component://netscape/import/import-service",
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aPath, PR_TRUE, PR_TRUE);
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IMPORT_LOG0( "*** Import Service registered.\n");
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return NS_OK;
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}
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extern "C" PR_IMPLEMENT(nsresult)
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NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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servMgr->UnregisterService( "component://netscape/import/import-service");
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NS_WITH_SERVICE1(nsIComponentManager, compMgr, servMgr, kComponentManagerCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->UnregisterComponent(kImportServiceCID, aPath);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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