gecko-dev/modules/staticmod/nsMetaModule.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Christopher Seawood <cls@seawood.org>
* Doug Turner <dougt@netscape.com>
* Chris Waterson <waterson@netscape.com>
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIGenericFactory.h"
#include "nsXPCOM.h"
#include "nsIModule.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsMemory.h"
#include "nsAutoPtr.h"
#include "module_list.h"
#define NSGETMODULE(_name) _name##_NSGetModule
#define MODULE(_name) \
NSGETMODULE_ENTRY_POINT(_name) (nsIComponentManager*, nsIFile*, nsIModule**);
MODULES
#undef MODULE
#define MODULE(_name) NSGETMODULE(_name),
static const nsGetModuleProc kGetModules[] = {
MODULES
};
#undef MODULE
class MetaModule : public nsIModule
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIMODULE
MetaModule() { }
nsresult Init(nsIComponentManager*, nsIFile*);
private:
~MetaModule() { }
nsCOMArray<nsIModule> mModules;
};
NS_IMPL_THREADSAFE_ISUPPORTS1(MetaModule, nsIModule)
nsresult
MetaModule::Init(nsIComponentManager* aCompMgr, nsIFile* aLocation)
{
if (!mModules.SetCapacity(NS_ARRAY_LENGTH(kGetModules)))
return NS_ERROR_OUT_OF_MEMORY;
// eat all errors
nsGetModuleProc const *end = kGetModules + NS_ARRAY_LENGTH(kGetModules);
nsCOMPtr<nsIModule> module;
for (nsGetModuleProc const *cur = kGetModules; cur < end; ++cur) {
nsresult rv = (*cur)(aCompMgr, aLocation, getter_AddRefs(module));
if (NS_SUCCEEDED(rv))
mModules.AppendObject(module);
}
return NS_OK;
}
NS_IMETHODIMP
MetaModule::GetClassObject(nsIComponentManager* aCompMgr, REFNSCID aCID,
REFNSIID aIID, void **aResult)
{
for (PRInt32 i = mModules.Count() - 1; i >= 0; --i) {
nsresult rv = mModules[i]->GetClassObject(aCompMgr, aCID,
aIID, aResult);
if (NS_SUCCEEDED(rv))
return rv;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
MetaModule::RegisterSelf(nsIComponentManager* aCompMgr, nsIFile* aLocation,
const char *aStr, const char *aType)
{
for (PRInt32 i = mModules.Count() - 1; i >= 0; --i) {
mModules[i]->RegisterSelf(aCompMgr, aLocation, aStr, aType);
}
return NS_OK;
}
NS_IMETHODIMP
MetaModule::UnregisterSelf(nsIComponentManager* aCompMgr, nsIFile* aLocation,
const char *aStr)
{
for (PRInt32 i = mModules.Count() - 1; i >= 0; --i) {
mModules[i]->UnregisterSelf(aCompMgr, aLocation, aStr);
}
return NS_OK;
}
NS_IMETHODIMP
MetaModule::CanUnload(nsIComponentManager* aCompMgr, PRBool *aResult)
{
for (PRInt32 i = mModules.Count() - 1; i >= 0; --i) {
nsresult rv = mModules[i]->CanUnload(aCompMgr, aResult);
if (NS_FAILED(rv))
return rv;
// Any submodule may veto unloading
if (!*aResult)
return NS_OK;
}
return NS_OK;
}
extern "C" NS_EXPORT nsresult
NSGetModule(nsIComponentManager *servMgr,
nsIFile *location,
nsIModule **result)
{
nsRefPtr<MetaModule> mmodule = new MetaModule();
nsresult rv = mmodule->Init(servMgr, location);
if (NS_FAILED(rv))
return rv;
NS_ADDREF(*result = mmodule);
return NS_OK;
}