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Converting to generic factory. Fixed vcard factory holding

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servicemanager. r=rhp@netscape.com
This commit is contained in:
dp%netscape.com 1999-12-07 22:44:49 +00:00
parent d3989be886
commit 2836fa3605
1 changed files with 24 additions and 185 deletions
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209
mailnews/mime/cthandlers/vcard/nsVCardFactory.cpp
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@ -20,197 +20,36 @@
* Contributor(s):
*/
#include "nsIFactory.h"
#include "nsISupports.h"
#include "msgCore.h"
#include "nsCOMPtr.h"
#include "pratom.h"
#include "nsIGenericFactory.h"
/* Include all of the interfaces our factory can generate components for */
#include "nsIMimeContentTypeHandler.h"
#include "nsMimeContentTypeHandler.h"
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kMimeContentTypeHandlerCID, NS_VCARD_CONTENT_TYPE_HANDLER_CID);
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
// Define the contructor function for the CID
//
////////////////////////////////////////////////////////////
static PRInt32 g_InstanceCount = 0;
static PRInt32 g_LockCount = 0;
// What this does is defines a function nsMimeContentTypeHandlerConstructor
// which we will specific in the nsModuleComponentInfo table. This function will
// be used by the generic factory to create an instance.
//
// NOTE: This creates an instance by using the default constructor
//
NS_GENERIC_FACTORY_CONSTRUCTOR(nsMimeContentTypeHandler)
class nsVCardFactory : public nsIFactory
{
public:
// nsISupports methods
NS_DECL_ISUPPORTS
nsVCardFactory(const nsCID &aClass,
const char* aClassName,
const char* aProgID,
nsISupports*);
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter, const nsIID &aIID, void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
protected:
virtual ~nsVCardFactory();
nsCID mClassID;
char* mClassName;
char* mProgID;
nsIServiceManager* mServiceManager;
};
nsVCardFactory::nsVCardFactory(const nsCID &aClass,
const char* aClassName,
const char* aProgID,
nsISupports *compMgrSupports)
: mClassID(aClass),
mClassName(nsCRT::strdup(aClassName)),
mProgID(nsCRT::strdup(aProgID))
////////////////////////////////////////////////////////////////////////
// Define a table of CIDs implemented by this module along with other
// information like the function to create an instance, progid, and
// class name.
//
static nsModuleComponentInfo components[] =
{
NS_INIT_REFCNT();
{ "MIME VCard Handler", NS_VCARD_CONTENT_TYPE_HANDLER_CID, "mimecth:text/x-vcard",
nsMimeContentTypeHandlerConstructor, }
};
// store a copy of the
compMgrSupports->QueryInterface(nsIServiceManager::GetIID(),
(void **)&mServiceManager);
}
////////////////////////////////////////////////////////////////////////
// Implement the NSGetModule() exported function for your module
// and the entire implementation of the module object.
//
NS_IMPL_NSGETMODULE("nsVCardModule", components)
nsVCardFactory::~nsVCardFactory()
{
NS_IF_RELEASE(mServiceManager);
PL_strfree(mClassName);
PL_strfree(mProgID);
}
nsresult
nsVCardFactory::QueryInterface(const nsIID &aIID, void **aResult)
{
if (aResult == NULL)
return NS_ERROR_NULL_POINTER;
// Always NULL result, in case of failure
*aResult = NULL;
// we support two interfaces....nsISupports and nsFactory.....
if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID()))
*aResult = (void *)(nsISupports*)this;
else if (aIID.Equals(nsIFactory::GetIID()))
*aResult = (void *)(nsIFactory*)this;
if (*aResult == NULL)
return NS_NOINTERFACE;
AddRef(); // Increase reference count for caller
return NS_OK;
}
NS_IMPL_ADDREF(nsVCardFactory)
NS_IMPL_RELEASE(nsVCardFactory)
nsresult
nsVCardFactory::CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult)
{
nsresult res = NS_OK;
if (aResult == NULL)
return NS_ERROR_NULL_POINTER;
*aResult = NULL;
nsCOMPtr <nsIMimeContentTypeHandler> inst;
// ClassID check happens here
// Whenever you add a new class that supports an interface, plug it in here!!!
// do they want a mime emitter interface ?
if (mClassID.Equals(kMimeContentTypeHandlerCID))
{
res = NS_NewMimeContentTypeHandler(getter_AddRefs(inst));
if (NS_FAILED(res)) // was there a problem creating the object ?
return res;
}
// End of checking the interface ID code....
if (inst)
{
// so we now have the class that supports the desired interface...we need to turn around and
// query for our desired interface.....
res = inst->QueryInterface(aIID, aResult);
}
else
res = NS_ERROR_OUT_OF_MEMORY;
return res;
}
nsresult
nsVCardFactory::LockFactory(PRBool aLock)
{
if (aLock)
PR_AtomicIncrement(&g_LockCount);
else
PR_AtomicDecrement(&g_LockCount);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// return the proper factory to the caller.
extern "C" NS_EXPORT nsresult NSGetFactory(nsISupports* aServMgr,
const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFactory **aFactory)
{
if (nsnull == aFactory)
return NS_ERROR_NULL_POINTER;
*aFactory = new nsVCardFactory(aClass, aClassName, aProgID, aServMgr);
if (aFactory)
return (*aFactory)->QueryInterface(nsIFactory::GetIID(),
(void**)aFactory);
else
return NS_ERROR_OUT_OF_MEMORY;
}
extern "C" NS_EXPORT PRBool NSCanUnload(nsISupports* aServMgr)
{
return PRBool(g_InstanceCount == 0 && g_LockCount == 0);
}
////////////////////////////////////////////////////////////////////////////////
extern "C" NS_EXPORT nsresult
NSRegisterSelf(nsISupports* aServMgr, const char* path)
{
nsresult rv = NS_OK;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, aServMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kMimeContentTypeHandlerCID,
"MIME VCard Handler",
"mimecth:text/x-vcard",
path, PR_TRUE, PR_TRUE);
return rv;
}
extern "C" NS_EXPORT nsresult
NSUnregisterSelf(nsISupports* aServMgr, const char* path)
{
nsresult rv = NS_OK;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, aServMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kMimeContentTypeHandlerCID, path);
return rv;
}
////////////////////////////////////////////////////////////////////////////////