mirror of
https://github.com/mozilla/gecko-dev.git
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321 lines
8.3 KiB
C++
321 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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 Mozilla 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/MPL/
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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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* Contributor(s):
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*
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* Rusty Lynch <rusty.lynch@intel.com>
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*/
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/*
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* Implements the SANE plugin factory class.
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*/
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsIServiceManager.h"
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#include "nsSanePlugin_CID.h"
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#include "nsSanePlugin.h"
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#include "nsSanePluginFactory.h"
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#include "plstr.h"
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#define PLUGIN_NAME "SANE Plugin"
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#define PLUGIN_DESCRIPTION "SANE Plugin is a generic scanner interface"
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#define PLUGIN_MIME_DESCRIPTION "application/X-sane-plugin::Scanner/Camera"
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#define PLUGIN_MIME_TYPE "application/X-sane-plugin"
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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_IID( kIPluginIID, NS_IPLUGIN_IID );
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static NS_DEFINE_CID( kComponentManagerCID, NS_COMPONENTMANAGER_CID );
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static NS_DEFINE_CID( knsSanePluginControlCID, NS_SANE_PLUGIN_CONTROL_CID );
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static NS_DEFINE_CID( knsSanePluginInst, NS_SANE_PLUGIN_CID );
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////////////////////////////////////////////////////////////////////////
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nsSanePluginFactoryImpl::nsSanePluginFactoryImpl( const nsCID &aClass,
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const char* className,
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const char* contractID )
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: mClassID(aClass), mClassName(className), mContractID(contractID)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::nsSanePluginFactoryImpl()\n");
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#endif
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NS_INIT_REFCNT();
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}
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nsSanePluginFactoryImpl::~nsSanePluginFactoryImpl()
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::~nsSanePluginFactoryImpl()\n");
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#endif
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printf("mRefCnt = %i\n", mRefCnt);
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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}
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NS_IMETHODIMP
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nsSanePluginFactoryImpl::QueryInterface(const nsIID &aIID,
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void **aInstancePtr)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::QueryInterface()\n");
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#endif
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if (!aInstancePtr)
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return NS_ERROR_NULL_POINTER;
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if (aIID.Equals(kISupportsIID)) {
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*aInstancePtr = NS_STATIC_CAST(nsISupports*,this);
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} else if (aIID.Equals(kIFactoryIID)) {
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*aInstancePtr = NS_STATIC_CAST(nsISupports*,
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NS_STATIC_CAST(nsIFactory*,this));
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} else if (aIID.Equals(kIPluginIID)) {
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*aInstancePtr = NS_STATIC_CAST(nsISupports*,
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NS_STATIC_CAST(nsIPlugin*,this));
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} else {
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*aInstancePtr = nsnull;
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return NS_ERROR_NO_INTERFACE;
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}
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NS_ADDREF(NS_REINTERPRET_CAST(nsISupports*,*aInstancePtr));
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return NS_OK;
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}
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// Standard implementation of AddRef and Release
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NS_IMPL_ADDREF( nsSanePluginFactoryImpl );
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NS_IMPL_RELEASE( nsSanePluginFactoryImpl );
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NS_IMETHODIMP
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nsSanePluginFactoryImpl::CreateInstance( nsISupports *aOuter,
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const nsIID &aIID,
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void **aResult)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::CreateInstance()\n");
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#endif
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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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nsSanePluginInstance * inst = new nsSanePluginInstance();
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if (!inst)
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return NS_ERROR_OUT_OF_MEMORY;
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inst->AddRef();
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*aResult = inst;
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return NS_OK;
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}
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nsresult
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nsSanePluginFactoryImpl::LockFactory(PRBool aLock)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::LockFactory()\n");
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#endif
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// Needs to be implemented
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return NS_OK;
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}
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NS_METHOD
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nsSanePluginFactoryImpl::Initialize()
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::Initialize()\n");
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#endif
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return NS_OK;
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}
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NS_METHOD
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nsSanePluginFactoryImpl::Shutdown( void )
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::Shutdown()\n");
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#endif
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return NS_OK;
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}
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NS_METHOD
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nsSanePluginFactoryImpl::GetMIMEDescription(const char* *result)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::GetMIMEDescription()\n");
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#endif
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// caller is responsible for releasing
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*result = PL_strdup( PLUGIN_MIME_DESCRIPTION );
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return NS_OK;
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}
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NS_METHOD
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nsSanePluginFactoryImpl::GetValue( nsPluginVariable variable, void *value )
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::GetValue()\n");
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#endif
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nsresult err = NS_OK;
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if ( variable == nsPluginVariable_NameString ) {
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*( ( char ** )value ) = strdup( PLUGIN_NAME );
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} else if ( variable == nsPluginVariable_DescriptionString ) {
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*( ( char ** )value ) = strdup( PLUGIN_DESCRIPTION );
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} else {
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err = NS_ERROR_FAILURE;
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}
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return err;
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}
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NS_IMETHODIMP
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nsSanePluginFactoryImpl::CreatePluginInstance( nsISupports *aOuter,
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REFNSIID aIID,
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const char* aPluginMIMEType,
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void **aResult)
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{
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#ifdef DEBUG
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printf("nsSanePluginFactoryImpl::CreatePluginInstance()\n");
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#endif
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// Need to find out what this is used for. The npsimple
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// plugin looks like it just does a CreateInstance and
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// ignores the mime type.
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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////////////////////////////////////////////////////////////////////////
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/**
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* The XPCOM runtime will call this to get a new factory object for the
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* CID/contractID it passes in. XPCOM is responsible for caching the resulting
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* factory.
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*
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* return the proper factory to the caller
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*/
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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 *aContractID,
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nsIFactory **aFactory)
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{
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if (! aFactory)
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return NS_ERROR_NULL_POINTER;
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nsSanePluginFactoryImpl* factory = new nsSanePluginFactoryImpl(aClass,
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aClassName,
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aContractID);
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if ( factory == nsnull )
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(factory);
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*aFactory = factory;
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return NS_OK;
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}
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char *buf;
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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 ) )
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return rv;
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NS_WITH_SERVICE( nsIComponentManager, compMgr, kComponentManagerCID, &rv );
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if ( NS_FAILED( rv ) )
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return rv;
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// Register the plugin control portion.
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rv = compMgr->RegisterComponent(knsSanePluginControlCID,
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"SANE Plugin Control",
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"@mozilla.org/plugins/sane-control;1",
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aPath, PR_TRUE, PR_TRUE );
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// Register the plugin portion.
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nsString contractID;
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contractID.AssignWithConversion( NS_INLINE_PLUGIN_CONTRACTID_PREFIX );
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contractID.AppendWithConversion(PLUGIN_MIME_TYPE);
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buf = ( char * )calloc( 2000, sizeof( char ) );
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contractID.ToCString( buf, 1999 );
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rv = compMgr->RegisterComponent( knsSanePluginInst,
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"SANE Plugin Component",
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buf,
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aPath, PR_TRUE, PR_TRUE);
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free( buf );
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if ( NS_FAILED( rv ) )
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return rv;
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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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NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->UnregisterComponent(knsSanePluginControlCID, 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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