/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

* 

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, 

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:  Class implement extended wrapper for ECom framework

*

*/

#include "xqpluginloader.h"

#include "xqpluginloaderprivate.h"

#include <qfileinfo.h>

#include "qdebug.h"

// -----------------------------------------------------------------------------

// XQPluginLoader()

// -----------------------------------------------------------------------------

//

XQPluginLoader::XQPluginLoader(QObject* parent) 

: 

QObject(parent),

d(0),

did_load( false )

{

}

// -----------------------------------------------------------------------------

// XQPluginLoader(int, QObject*)

// -----------------------------------------------------------------------------

//

XQPluginLoader::XQPluginLoader(int requestedUid, QObject* parent) 

: 

QObject(parent),

d(XQPluginLoaderPrivate::findOrCreate(requestedUid)), 

did_load( false )

{

}

// -----------------------------------------------------------------------------

// ~XQPluginLoader2()

// -----------------------------------------------------------------------------

//

XQPluginLoader::~XQPluginLoader()

{

    if(d) {

        d->release();

    }

}

// -----------------------------------------------------------------------------

// listImplementations(const QString &interfaceName, QList<XQPluginInfo> &impls)

// -----------------------------------------------------------------------------

//

bool XQPluginLoader::listImplementations(

        const QString &interfaceName, 

        QList< XQPluginInfo > &impls)

{

    RImplInfoPtrArray infoArr;

    TRAPD( errCode, XQPluginLoaderPrivate::listImplementationsL( infoArr, interfaceName, impls ) );

    infoArr.ResetAndDestroy();

    return ( KErrNone == errCode );

}

// -----------------------------------------------------------------------------

// uid()

// -----------------------------------------------------------------------------

//

int XQPluginLoader::uid()const

{

    return ( d ? d->uid : KNullUid.iUid );

}

// -----------------------------------------------------------------------------

// instance()

// -----------------------------------------------------------------------------

//

QObject* XQPluginLoader::instance()

{

    if (!load())

        return 0;

#ifndef Q_OS_SYMBIAN

    if (d->instance)

        return d->instance();

	else

		return 0;

#else

    return d->instance();

#endif

}

// -----------------------------------------------------------------------------

// isLoaded()

// -----------------------------------------------------------------------------

//

bool XQPluginLoader::isLoaded() const

{

    return d && d->pHnd

#ifndef Q_OS_SYMBIAN

        && d->instance;

#else

        ;

#endif    

}

// -----------------------------------------------------------------------------

// load()

// -----------------------------------------------------------------------------

//

bool XQPluginLoader::load()

{

    if (!d)

        return false;

    if (did_load)

        return d->pHnd;

    did_load = true;

    return d->loadPlugin();

}

// -----------------------------------------------------------------------------

// unload()

// -----------------------------------------------------------------------------

//

bool XQPluginLoader::unload()

{

    if (did_load) {

        did_load = false;

        return d->unload();

    }

    if (d)  // Ouch

        d->errorString = tr("The plugin was not loaded.");

    return false;

}

// -----------------------------------------------------------------------------

// setUid ( int )

// -----------------------------------------------------------------------------

//

void XQPluginLoader::setUid ( int uid )

{

    if (d) {

        d->release();

        d = 0;

        did_load = false;

    }

    d = XQPluginLoaderPrivate::findOrCreate( uid );

}

// -----------------------------------------------------------------------------

// errorString ()

// -----------------------------------------------------------------------------

//

QString XQPluginLoader::errorString () const

{

    return (!d || d->errorString.isEmpty()) ? tr("Unknown error") : d->errorString;

}