emailuis/nmsettingui/src/nmmailboxsettingsmanager.cpp
author hgs
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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <QPluginLoader>
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#include <QDir>
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#include <QScopedPointer>
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#include <HbView>
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#include <QVariant>
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#include <nmdatamanager.h>
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#include <nmicons.h>
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#include <nmcommon.h>
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#include "nmmailboxsettingsmanager.h"
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#include "nmsettingsplugininterface.h"
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/*!
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    \class NmMailboxSettingsManager
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    \brief Provides access to mailbox settings through the setting plug-ins.
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*/
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// ======== HELPER FUNCTIONS ========
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/*!
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  Creates list of folder paths where plug-ins can be loaded from.
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  \return folder path list.
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*/
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QStringList pluginFolders()
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{
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    NM_FUNCTION;
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    const QString nmSettingsPluginFolderPath("resource/qt/plugins/nmail/settings");
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    QStringList pluginDirectories;
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    QFileInfoList driveList = QDir::drives();
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    foreach(const QFileInfo &driveInfo, driveList) {
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        QString pluginDirectory =
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            driveInfo.absolutePath() + nmSettingsPluginFolderPath;
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        if (QFileInfo(pluginDirectory).exists()) {
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            pluginDirectories.append(pluginDirectory);
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        }
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    }
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    return pluginDirectories;
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}
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// ======== MEMBER FUNCTIONS ========
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/*!
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    Contructor of NmMailboxSettingsManager.
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*/
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NmMailboxSettingsManager::NmMailboxSettingsManager()
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: mDataManager(NULL)
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    NM_FUNCTION;
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    QScopedPointer<NmDataManager> dataManager(new NmDataManager());
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    loadPlugins();
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    mDataManager = dataManager.take();
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}
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/*!
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    Destructor of NmMailboxSettingsManager.
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*/
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NmMailboxSettingsManager::~NmMailboxSettingsManager()
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{
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    NM_FUNCTION;
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    unloadPlugins();
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    qDeleteAll(mPluginLoaders);
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    mPluginLoaders.clear();
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    NmIcons::freeIcons();
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    delete mDataManager;
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}
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/*!
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    Populates the given list with available mailboxes.
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    \param mailboxList List to be popuplated with mailbox entries.
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*/
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void NmMailboxSettingsManager::listMailboxes(QList<NmMailbox *> &mailboxList)
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{
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    NM_FUNCTION;
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    mDataManager->listMailboxes(mailboxList);
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}
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/*!
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    Returns a branded icon for the given mailbox id.
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    \param mailboxId Id of the mailbox.
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    \return Icon for the mailbox.
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*/
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HbIcon &NmMailboxSettingsManager::mailboxIcon(const NmId &mailboxId) const
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{
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    NM_FUNCTION;
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    Q_UNUSED(mailboxId);
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    // TODO: use some branding feature when it is available.
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    return NmIcons::getIcon(NmIcons::NmIconDefaultMailbox);
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}
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/*!
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    Populates the given data form model with setting items from the correct
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    plug-in.
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    \param model Model to be populated with the setting items.
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    \param form The form where the setting items are placed.
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    \param mailboxId Id of the mailbox which's settings are to be populated to
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                     the model.
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*/
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void NmMailboxSettingsManager::populateModel(HbDataFormModel &model,
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    HbDataForm &form, const NmId &mailboxId) const
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{
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    NM_FUNCTION;
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    NmSettingsPluginInterface *plugin = NULL;
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    foreach (QPluginLoader *loader, mPluginLoaders) {
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        QObject *pluginInstance = loader->instance();
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        plugin = qobject_cast<NmSettingsPluginInterface *>(pluginInstance);
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        if (plugin && plugin->populateModel(model, form, mailboxId)) {
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            // We need to disconnect possible previous connections, because we only have
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            // one instance of every plugin. This way we can be sure that signal is send to
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            // correct object.
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            pluginInstance->disconnect(SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));
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            pluginInstance->disconnect(SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));
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            pluginInstance->disconnect(SIGNAL(goOnline(const NmId &)));
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            pluginInstance->disconnect(SIGNAL(goOffline(const NmId &)));
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            pluginInstance->disconnect(this, SIGNAL(aboutToClose()), pluginInstance, SLOT(aboutToClose()));
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            connect(pluginInstance, SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)),
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                this, SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));
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            connect(pluginInstance, SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)),
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                this, SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));
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20
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            connect(pluginInstance, SIGNAL(goOnline(const NmId &)),
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                this, SIGNAL(goOnline(const NmId &)));
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            connect(pluginInstance, SIGNAL(goOffline(const NmId &)),
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                this, SIGNAL(goOffline(const NmId &)));
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            connect(this, SIGNAL(aboutToClose()),
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            	pluginInstance, SLOT(aboutToClose()));
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            break;
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        }
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    }
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}
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/*!
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    Loads plug-ins which implements NmSettingsPluginInterface and are registered
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    to <code>/resource/qt/plugins/nmail/settings</code> folder.
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*/
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void NmMailboxSettingsManager::loadPlugins()
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{
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    NM_FUNCTION;
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    QStringList directories(pluginFolders());
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    foreach (const QString &directoryPath, directories) {
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        QDir directory(directoryPath);
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        QFileInfoList fileList(directory.entryInfoList());
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        foreach (const QFileInfo &fileInfo, fileList) {
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            QScopedPointer<QPluginLoader> loader(
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                new QPluginLoader(fileInfo.absoluteFilePath()));
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            mPluginLoaders.append(loader.data());
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            loader.take();
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        }
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    }
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}
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/*!
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    Unloads plug-ins to ensure that the root component is deleted.
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*/
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void NmMailboxSettingsManager::unloadPlugins()
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{
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    NM_FUNCTION;
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    foreach (QPluginLoader *loader, mPluginLoaders) {
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        loader->unload();
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    }
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}
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// End of file.