mirror of
https://github.com/mozilla/gecko-dev.git
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234 lines
8.3 KiB
C++
234 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications 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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#ifndef nsComponentManager_h__
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#define nsComponentManager_h__
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#include "nsIComponentLoader.h"
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#include "nsNativeComponentLoader.h"
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#include "nsIComponentManager.h"
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#include "nsIFactory.h"
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#include "nsRegistry.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsHashtable.h"
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#include "prtime.h"
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#include "prmon.h"
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#include "nsCOMPtr.h"
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#include "nsWeakReference.h"
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#include "nsXPIDLString.h"
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#include "nsIFile.h"
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class nsFactoryEntry;
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class nsDll;
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class nsIServiceManager;
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// Registry Factory creation function defined in nsRegistry.cpp
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// We hook into this function locally to create and register the registry
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// Since noone outside xpcom needs to know about this and nsRegistry.cpp
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// does not have a local include file, we are putting this definition
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// here rather than in nsIRegistry.h
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extern "C" NS_EXPORT nsresult NS_RegistryGetFactory(nsIFactory** aFactory);
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extern const char XPCOM_LIB_PREFIX[];
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////////////////////////////////////////////////////////////////////////////////
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class nsComponentManagerImpl
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: public nsIComponentManager, public nsSupportsWeakReference,
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public nsIInterfaceRequestor {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSICOMPONENTMANAGER
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NS_DECL_NSIINTERFACEREQUESTOR
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// nsComponentManagerImpl methods:
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nsComponentManagerImpl();
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virtual ~nsComponentManagerImpl();
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static nsComponentManagerImpl* gComponentManager;
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nsresult Init(void);
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nsresult PlatformPrePopulateRegistry();
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nsresult Shutdown(void);
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friend class nsFactoryEntry;
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protected:
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nsresult RegistryNameForLib(const char *aLibName, char **aRegistryName);
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nsresult RegisterComponentCommon(const nsCID &aClass,
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const char *aClassName,
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const char *aContractID,
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const char *aRegistryName,
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PRBool aReplace, PRBool aPersist,
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const char *aType);
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nsresult AddComponentToRegistry(const nsCID &aCID, const char *aClassName,
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const char *aContractID,
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const char *aRegistryName,
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const char *aType);
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nsresult GetLoaderForType(const char *aType,
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nsIComponentLoader **aLoader);
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nsresult LoadFactory(nsFactoryEntry *aEntry, nsIFactory **aFactory);
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nsFactoryEntry *GetFactoryEntry(const nsCID &aClass, PRBool checkRegistry);
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nsresult SyncComponentsInDir(PRInt32 when, nsIFile *dirSpec);
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nsresult SelfRegisterDll(nsDll *dll);
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nsresult SelfUnregisterDll(nsDll *dll);
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nsresult HashContractID(const char *acontractID, const nsCID &aClass);
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nsresult UnloadLibraries(nsIServiceManager *servmgr, PRInt32 when);
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// The following functions are the only ones that operate on the persistent
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// registry
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nsresult PlatformInit(void);
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nsresult PlatformVersionCheck(nsRegistryKey *aXPCOMRootKey);
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nsresult PlatformRegister(const char *cidString, const char *className, const char *contractID, nsDll *dll);
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nsresult PlatformUnregister(const char *cidString, const char *aLibrary);
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nsresult PlatformFind(const nsCID &aCID, nsFactoryEntry* *result);
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nsresult PlatformContractIDToCLSID(const char *aContractID, nsCID *aClass);
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nsresult PlatformCLSIDToContractID(const nsCID *aClass, char* *aClassName, char* *aContractID);
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private:
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nsresult AutoRegisterImpl(PRInt32 when, nsIFile *inDirSpec);
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protected:
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nsObjectHashtable* mFactories;
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nsObjectHashtable* mContractIDs;
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nsSupportsHashtable* mLoaders;
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PRMonitor* mMon;
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nsRegistry* mRegistry;
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nsRegistryKey mXPCOMKey;
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nsRegistryKey mClassesKey;
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nsRegistryKey mCLSIDKey;
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PRBool mPrePopulationDone;
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nsRegistryKey mLoadersKey;
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nsNativeComponentLoader *mNativeComponentLoader;
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nsIComponentLoader *mStaticComponentLoader;
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nsCOMPtr<nsIFile> mComponentsDir;
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PRInt32 mComponentsOffset;
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// Shutdown
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#define NS_SHUTDOWN_NEVERHAPPENED 0
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#define NS_SHUTDOWN_INPROGRESS 1
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#define NS_SHUTDOWN_COMPLETE 2
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PRUint32 mShuttingDown;
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};
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#define NS_MAX_FILENAME_LEN 1024
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#define NS_ERROR_IS_DIR NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_XPCOM, 24)
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#ifdef XP_UNIX
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/* The default registry on the unix system is $HOME/.mozilla/registry per
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* vr_findGlobalRegName(). vr_findRegFile() will create the registry file
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* if it doesn't exist. But it wont create directories.
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*
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* Hence we need to create the directory if it doesn't exist already.
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*
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* Why create it here as opposed to the app ?
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* ------------------------------------------
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* The app cannot create the directory in main() as most of the registry
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* and initialization happens due to use of static variables.
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* And we dont want to be dependent on the order in which
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* these static stuff happen.
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*
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* Permission for the $HOME/.mozilla will be Read,Write,Execute
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* for user only. Nothing to group and others.
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*/
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#define NS_MOZILLA_DIR_NAME ".mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_UNIX */
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#ifdef XP_BEOS
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#define NS_MOZILLA_DIR_NAME "mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_BEOS */
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/**
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* When using the registry we put a version number in it.
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* If the version number that is in the registry doesn't match
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* the following, we ignore the registry. This lets news versions
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* of the software deal with old formats of registry and not
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*
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* alpha0.20 : First time we did versioning
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* alpha0.30 : Changing autoreg to begin registration from ./components on unix
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* alpha0.40 : repository -> component manager
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* alpha0.50 : using nsIRegistry
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* alpha0.60 : xpcom 2.0 landing
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* alpha0.70 : using nsIFileSpec. PRTime -> PRUint32
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* alpha0.90 : using nsIComponentLoader, abs:/rel:/lib:, shaver-cleanup
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* alpha0.92 : restructured registry keys
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* alpha0.93 : changed component names to native strings instead of UTF8
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*/
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#define NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING "alpha0.93"
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Class: nsFactoryEntry()
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*
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* There are two types of FactoryEntries.
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*
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* 1. {CID, dll} mapping.
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* Factory is a consequence of the dll. These can be either session
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* specific or persistent based on whether we write this
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* to the registry or not.
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*
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* 2. {CID, factory} mapping
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* These are strictly session specific and in memory only.
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*/
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class nsFactoryEntry {
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public:
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nsFactoryEntry(const nsCID &aClass, const char *location,
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const char *aType, nsIComponentLoader *aLoader);
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nsFactoryEntry(const nsCID &aClass, nsIFactory *aFactory);
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~nsFactoryEntry();
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nsresult GetFactory(nsIFactory **aFactory,
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nsComponentManagerImpl * mgr) {
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if (factory) {
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*aFactory = factory.get();
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NS_ADDREF(*aFactory);
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return NS_OK;
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}
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nsresult rv;
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if (!loader.get()) {
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rv = mgr->GetLoaderForType(type, getter_AddRefs(loader));
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if(NS_FAILED(rv))
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return rv;
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}
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rv = loader->GetFactory(cid, location, type, aFactory);
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if (NS_SUCCEEDED(rv))
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factory = do_QueryInterface(*aFactory);
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return rv;
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}
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nsCID cid;
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nsCString location;
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nsCOMPtr<nsIFactory> factory;
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nsCString type;
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nsCOMPtr<nsIComponentLoader> loader;
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};
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsComponentManager_h__
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