/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include "nmuiheaders.h"

static const QString NmSettingsPluginFolderPath("/resource/qt/plugins/nmail/uiext");

/*!

    \class NmUiExtensionManager

    \brief Handles ui extension plugins

 */

/*!

  Creates list of folder paths where plug-ins can be loaded from.

  \return folder path list.

*/

QStringList NmUiExtensionManager::pluginFolders()

{

    NM_FUNCTION;

    QStringList pluginDirectories;

    QFileInfoList driveList = QDir::drives();

    foreach(const QFileInfo &driveInfo, driveList) {

        QString pluginDirectory =

            driveInfo.absolutePath() + NmSettingsPluginFolderPath;

        NMLOG(QString("fileInfo.absoluteFilePath() : %1").arg(pluginDirectory)); 

        if (QFileInfo(pluginDirectory).exists()) {

            pluginDirectories.append(pluginDirectory);

        }

    }

    return pluginDirectories;

}

NmUiExtensionManager::NmUiExtensionManager()

{

    NM_FUNCTION;

    // load the protocol extension plugins

    loadExtensionPlugins();

}

/*!

    Destructor

 */

NmUiExtensionManager::~NmUiExtensionManager()

{

    NM_FUNCTION;

    // delete plugins from array

    qDeleteAll(mExtensions.begin(), mExtensions.end());

    mExtensions.clear();

    qDeleteAll(mPluginLoaders.begin(), mPluginLoaders.end());

    mPluginLoaders.clear();

}

/*!

    Calls all extensions

 */

void NmUiExtensionManager::getActions(

    const NmActionRequest &menuRequest,

    QList<NmAction*> &actionList)

{

    NM_FUNCTION;

    for (int i = 0; i < mExtensions.count(); i++) {

    	NmUiExtensionInterface *interface = mExtensions[i];

        interface->getActions(menuRequest, actionList);

    }

}

/*!

    Loads plug-ins which implements NmUiExtensionInterface and are registered

    to <code>/resource/qt/plugins/nmail/uiext</code> folder.

 */

void NmUiExtensionManager::loadExtensionPlugins()

{

    NM_FUNCTION;

    QStringList directories(pluginFolders());

    foreach (const QString &directoryPath, directories) {

        QDir directory(directoryPath);

        QFileInfoList fileList(directory.entryInfoList());

        foreach (const QFileInfo &fileInfo, fileList) {

            NM_COMMENT(QString("Plugin absolute FilePath : %1").arg(fileInfo.absoluteFilePath()));  

            QScopedPointer<QPluginLoader> loader(

                new QPluginLoader(fileInfo.absoluteFilePath()));

            mPluginLoaders.append(loader.data());

            loader.take();

        }

    }

    NmUiExtensionInterface *interface(NULL);    

    foreach (QPluginLoader *loader, mPluginLoaders) {      

        NM_COMMENT(QString("Plugin fileName() : %1").arg(loader->fileName()));

        QString fileName = loader->fileName();        

        QObject *pluginInstance = loader->instance();

        interface = qobject_cast<NmUiExtensionInterface*>(pluginInstance);

        if (interface) {

            mExtensions.append(interface);

        }

    }

}