gecko-dev/extensions/xmlterm/base/mozXMLTermFactory.cpp
svn%xmlterm.org 6d93a02c1b xmlterm changes only.
Changed true to PR_TRUE and false to PR_FALSE to compile on native Solaris
compilers. Patch provided by Ashutosh.Kulkarni@eng.sun.com
2000-04-21 14:01:43 +00:00

299 lines
7.9 KiB
C++

/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "MPL"); you may not use this file
* except in compliance with the MPL. You may obtain a copy of
* the MPL at http://www.mozilla.org/MPL/
*
* Software distributed under the MPL is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the MPL for the specific language governing
* rights and limitations under the MPL.
*
* The Original Code is XMLterm.
*
* The Initial Developer of the Original Code is Ramalingam Saravanan.
* Portions created by Ramalingam Saravanan <svn@xmlterm.org> are
* Copyright (C) 1999 Ramalingam Saravanan. All Rights Reserved.
*
* Contributor(s):
*/
// mozXMLTermFactory.cpp: XPCOM factory for mozIXMLTermShell, mozILineTerm
#include "nsCOMPtr.h"
#include "nscore.h"
#include "nspr.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsXPComFactory.h"
#include "mozXMLT.h"
#include "mozLineTerm.h"
#include "mozIXMLTermShell.h"
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kXMLTermShellCID, MOZXMLTERMSHELL_CID);
static NS_DEFINE_CID(kLineTermCID, MOZLINETERM_CID);
class XMLTermFactory : public nsIFactory
{
public:
XMLTermFactory(const nsCID &aClass, const char* className, const char* progID);
// nsISupports methods
NS_DECL_ISUPPORTS
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
protected:
virtual ~XMLTermFactory();
protected:
nsCID mClassID;
const char* mClassName;
const char* mProgID;
};
/////////////////////////////////////////////////////////////////////////
// mozXMLTermFactory implementation
/////////////////////////////////////////////////////////////////////////
// Globals, useful to check if safe to unload module
static PRInt32 gLockCnt = 0;
static PRInt32 gInstanceCnt = 0;
XMLTermFactory::XMLTermFactory(const nsCID &aClass,
const char* className,
const char* progID):
mClassID(aClass),
mClassName(className),
mProgID(progID)
{
// Zero reference counter
NS_INIT_REFCNT();
PR_AtomicIncrement(&gInstanceCnt);
}
XMLTermFactory::~XMLTermFactory()
{
NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
PR_AtomicDecrement(&gInstanceCnt);
}
NS_IMETHODIMP
XMLTermFactory::QueryInterface(const nsIID &aIID, void **aResult)
{
if (!aResult)
return NS_ERROR_NULL_POINTER;
// Always NULL result, in case of failure
*aResult = nsnull;
if (aIID.Equals(kISupportsIID)) {
*aResult = NS_STATIC_CAST(nsISupports*, this);
} else if (aIID.Equals(kIFactoryIID)) {
*aResult = NS_STATIC_CAST(nsIFactory*, this);
} else {
return NS_ERROR_NO_INTERFACE;
}
NS_ADDREF_THIS();
return NS_OK;
}
NS_IMPL_ADDREF(XMLTermFactory);
NS_IMPL_RELEASE(XMLTermFactory);
NS_IMETHODIMP
XMLTermFactory::CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult)
{
if (!aResult)
return NS_ERROR_NULL_POINTER;
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
*aResult = nsnull;
nsresult rv;
nsISupports *inst = nsnull;
if (mClassID.Equals(kXMLTermShellCID)) {
if (NS_FAILED(rv = NS_NewXMLTermShell((mozIXMLTermShell**) &inst)))
return rv;
} else if (mClassID.Equals(kLineTermCID)) {
if (NS_FAILED(rv = NS_NewLineTerm((mozILineTerm**) &inst)))
return rv;
} else {
return NS_ERROR_NO_INTERFACE;
}
if (! inst)
return NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv = inst->QueryInterface(aIID, aResult))) {
// We didn't get the right interface.
NS_ERROR("didn't support the interface you wanted");
}
NS_IF_RELEASE(inst);
return rv;
}
NS_IMETHODIMP
XMLTermFactory::LockFactory(PRBool aLock)
{
if (aLock) {
PR_AtomicIncrement(&gLockCnt);
} else {
PR_AtomicDecrement(&gLockCnt);
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////
// Exported functions for loading, registering, unregistering, and unloading
////////////////////////////////////////////////////////////////////////////
// Return approptiate factory to the caller
extern "C" NS_EXPORT nsresult
NSGetFactory(nsISupports* aServMgr,
const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFactory **aFactory)
{
static PRBool ltermInitialized = PR_FALSE;
static PRBool xmltermInitialized = PR_FALSE;
if (!ltermInitialized) {
// Initialize all LINETERM operations
// (This initialization needs to be done at factory creation time;
// trying to do it earlier, i.e., at registration time,
// does not work ... something to do with loading of static global
// variables.)
int messageLevel = 8;
char* debugStr = (char*) PR_GetEnv("LTERM_DEBUG");
if (debugStr && (strlen(debugStr) == 1)) {
messageLevel = 98;
debugStr = nsnull;
}
int result = lterm_init(0);
if (result == 0) {
tlog_set_level(LTERM_TLOG_MODULE, messageLevel, debugStr);
}
ltermInitialized = PR_TRUE;
char* logStr = (char*) PR_GetEnv("LTERM_LOG");
if (logStr && (strlen(logStr) > 0)) {
// Enable LineTerm logging
mozLineTerm::mLoggingEnabled = PR_TRUE;
}
}
if (aClass.Equals(kXMLTermShellCID) && !xmltermInitialized) {
// Set initial debugging message level for XMLterm
int messageLevel = 8;
char* debugStr = (char*) PR_GetEnv("XMLT_DEBUG");
if (debugStr && (strlen(debugStr) == 1)) {
messageLevel = 98;
debugStr = nsnull;
}
tlog_set_level(XMLT_TLOG_MODULE, messageLevel, debugStr);
xmltermInitialized = PR_TRUE;
}
if (!aFactory)
return NS_ERROR_NULL_POINTER;
*aFactory = nsnull;
XMLTermFactory* factory = new XMLTermFactory(aClass, aClassName,
aProgID);
if (factory == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(factory);
*aFactory = factory;
return NS_OK;
}
extern "C" NS_EXPORT nsresult
NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
{
nsresult result;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &result));
if (NS_FAILED(result)) return result;
NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &result);
if (NS_FAILED(result)) return result;
printf("Registering lineterm interface\n");
result = compMgr->RegisterComponent(kLineTermCID,
"LineTerm Component",
"component://mozilla/xmlterm/lineterm",
aPath, PR_TRUE, PR_TRUE);
if (NS_FAILED(result)) return result;
printf("Registering xmlterm shell interface\n");
result = compMgr->RegisterComponent(kXMLTermShellCID,
"XMLTerm Shell Component",
"component://mozilla/xmlterm/xmltermshell",
aPath, PR_TRUE, PR_TRUE);
if (NS_FAILED(result)) return result;
return NS_OK;
}
extern "C" NS_EXPORT nsresult
NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
{
nsresult result;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &result));
if (NS_FAILED(result)) return result;
NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &result);
if (NS_FAILED(result)) return result;
result = compMgr->UnregisterComponent(kLineTermCID, aPath);
if (NS_FAILED(result)) return result;
result = compMgr->UnregisterComponent(kXMLTermShellCID, aPath);
if (NS_FAILED(result)) return result;
return NS_OK;
}