/*

 * 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: Drafts List View for displaying drafts messages.

 *

 */

#include "draftslistview.h"

// SYSTEM INCLUDES

#include <HbMenu>

#include <HbAction>

#include <HbToolBar>

#include <HbToolBarExtension>

#include <HbListView>

#include <HbListViewItem>

#include <HbListWidget>

#include <HbListWidgetItem>

#include <HbStyleLoader>

#include <HbGroupBox>

#include <HbFrameBackground>

#include <HbMessageBox>

#include <HbMainWindow>

#include <QAbstractItemModel>

#include <QSortFilterProxyModel>

#include <QGraphicsLinearLayout>

// USER INCLUDES

#include "conversationsengine.h"

#include "conversationsenginedefines.h"

#include "convergedmessage.h"

#include "convergedmessageid.h"

// LOCAL CONSTANTS

const QString POPUP_LIST_FRAME("qtg_fr_popup_list_normal");

const QString NEW_MESSAGE_ICON("qtg_mono_create_message");

// LOCALIZATION CONSTANTS

// Long Tap

#define LOC_COMMON_OPEN           hbTrId("txt_common_menu_open")

#define LOC_COMMON_DELETE         hbTrId("txt_common_menu_delete")

// View heading

#define LOC_DLV_HEADING           hbTrId("txt_messaging_title_drafts")

// Menu items

#define LOC_MENU_DELETE_ALL       hbTrId("txt_messaging_opt_delete_all")

// Toolbar & toolbar exension

#define LOC_TB_EXTN_DRAFTS        hbTrId("txt_messaging_button_drafts")

#define LOC_TB_EXTN_CONVERSATIONS hbTrId("txt_messaging_button_conversations")

// Confirmation note

#define LOC_DELETE_MESSAGE        hbTrId("txt_messaging_dialog_delete_message")

#define LOC_DELETE_ALL_DRAFTS     hbTrId("txt_messaging_dialog_delete_all_drafts")

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

// DraftsListView::DraftsListView

// @see header

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

DraftsListView::DraftsListView(QGraphicsItem *parent) :

    MsgBaseView(parent),

    mListView(0), 

    mViewExtnList(0),

    mToolBar(0)

{

    // Delayed loading.

    connect(this->mainWindow(), SIGNAL(viewReady()), this, SLOT(doDelayedLoading()));

}

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

// DraftsListView::~DraftsListView

// @see header

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

DraftsListView::~DraftsListView()

{

}

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

// DraftsListView::setupMenu

// @see header

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

void DraftsListView::setupMenu()

{

    QAbstractItemModel *model = mListView->model();

    // Menu items are added/removed based on the item count.

    connect(model, SIGNAL(rowsInserted(QModelIndex, int, int)), this,

        SLOT(handleModelChanged()), Qt::UniqueConnection);

    connect(model, SIGNAL(rowsRemoved(QModelIndex, int, int)), this,

        SLOT(handleModelChanged()), Qt::UniqueConnection);

}

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

// DraftsListView::setupToolbar

// @see header

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

void DraftsListView::setupToolbar()

{

    if (!mToolBar) {

        mToolBar = this->toolBar();

        mToolBar->setOrientation(Qt::Horizontal);

        // Create & setup ToolBar Extension

        HbToolBarExtension *viewExtn = new HbToolBarExtension();

        HbAction *viewAction = mToolBar->addExtension(viewExtn);

        viewAction->setIcon(HbIcon(SORT_ICON));

        mViewExtnList = new HbListWidget();

        mViewExtnList->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Fixed);

        mViewExtnList->addItem(LOC_TB_EXTN_DRAFTS);

        mViewExtnList->addItem(LOC_TB_EXTN_CONVERSATIONS);

        HbListViewItem *prototype = mViewExtnList->listItemPrototype();

        HbFrameBackground frame(POPUP_LIST_FRAME, HbFrameDrawer::NinePieces);

        prototype->setDefaultFrame(frame);

        connect(mViewExtnList, SIGNAL(activated(HbListWidgetItem*)), this,

            SLOT(handleViewExtnActivated(HbListWidgetItem*)));

        connect(mViewExtnList, SIGNAL(released(HbListWidgetItem*)), viewExtn, SLOT(close()));

        viewExtn->setContentWidget(mViewExtnList);

        // Create & setup 2nd ToolBar button.

        mToolBar->addAction(HbIcon(NEW_MESSAGE_ICON), "", this, SLOT(createNewMessage()));

    }

}

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

// DraftsListView::setupListView

// @see header

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

void DraftsListView::setupListView()

{

    if (!mListView) {

        // Create parent layout.

        QGraphicsLinearLayout *mainLayout = new QGraphicsLinearLayout(Qt::Vertical);

        mainLayout->setContentsMargins(0, 0, 0, 0);

        mainLayout->setSpacing(0);

        // Create view heading.

        HbGroupBox *viewHeading = new HbGroupBox();

        viewHeading->setHeading(LOC_DLV_HEADING);

        // Create List View.

        mListView = new HbListView(this);

        mListView->setItemRecycling(true);

        mListView->setUniformItemSizes(true);

        mListView->setClampingStyle(HbScrollArea::BounceBackClamping);

        // Register the custorm css path.

        HbStyleLoader::registerFilePath(":/dlv");

        //    mListView->setLayoutName("custom");

        // Set list item properties.

        HbListViewItem *prototype = mListView->listItemPrototype();

        prototype->setGraphicsSize(HbListViewItem::SmallIcon);

        prototype->setStretchingStyle(HbListViewItem::StretchLandscape);

        prototype->setSecondaryTextRowCount(1, 1);

        // Create and set model

        QSortFilterProxyModel *proxyModel = new QSortFilterProxyModel(this);

        proxyModel->setDynamicSortFilter(true);

        proxyModel->setSourceModel(ConversationsEngine::instance()->getDraftsModel());

        proxyModel->setSortRole(TimeStamp);

        proxyModel->sort(0, Qt::DescendingOrder);

        mListView->setModel(proxyModel);

        // Short & Long Taps

        connect(mListView, SIGNAL(activated(QModelIndex)), this,

            SLOT(openDraftMessage(QModelIndex)));

        connect(mListView, SIGNAL(longPressed(HbAbstractViewItem*,QPointF)), this,

            SLOT(handleLongPressed(HbAbstractViewItem*,QPointF)));

        // Add all widgets to main layout.

        mainLayout->addItem(viewHeading);

        mainLayout->addItem(mListView);

        this->setLayout(mainLayout);

    }

}

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

// DraftsListView::doDelayedLoading

// @see header

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

void DraftsListView::doDelayedLoading()

{

    setupToolbar();

    setupListView();

    setupMenu();

    disconnect(this->mainWindow(), SIGNAL(viewReady()), this, SLOT(doDelayedLoading()));

}

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

// DraftsListView::openDraftMessage

// @see header

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

void DraftsListView::openDraftMessage()

{

    openDraftMessage(mListView->currentIndex());

}

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

// DraftsListView::deleteDraftMessage

// @see header

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

void DraftsListView::deleteDraftMessage()

{

    QModelIndex index = mListView->currentIndex();

    if (!index.isValid()) {

        return;

    }

    HbMessageBox::question(LOC_DELETE_MESSAGE,

                           this,SLOT(onDialogDeleteMsg(HbAction*)),

                           HbMessageBox::Delete | HbMessageBox::Cancel);

}

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

// DraftsListView::deleteAllDraftMessage

// @see header

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

void DraftsListView::deleteAllDraftMessage()

{

    HbMessageBox::question(LOC_DELETE_ALL_DRAFTS,

                           this,SLOT(onDialogDeleteAllMessages(HbAction*)),

                           HbMessageBox::Delete | HbMessageBox::Cancel);

}

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

// DraftsListView::createNewMessage

// @see header

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

void DraftsListView::createNewMessage()

{

    QVariantList param;

    param << MsgBaseView::UNIEDITOR; // target view

    param << MsgBaseView::DLV; // source view

    emit switchView(param);

}

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

// DraftsListView::openDraftMessage

// @see header

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

void DraftsListView::openDraftMessage(const QModelIndex &index)

{

    QVariant msgId = index.data(ConvergedMsgId);

    QVariant msgType = index.data(MessageType);

    ConvergedMessageId convergedMsgId = ConvergedMessageId(msgId.toInt());

    ConvergedMessage message;

    message.setMessageType((ConvergedMessage::MessageType) msgType.toInt());

    message.setMessageId(convergedMsgId);

    // Launch uni-editor view

    QByteArray dataArray;

    QDataStream messageStream(&dataArray, QIODevice::WriteOnly | QIODevice::Append);

    message.serialize(messageStream);

    QVariantList params;

    params << MsgBaseView::UNIEDITOR; // target view

    params << MsgBaseView::DLV; // source view

    params << dataArray;

    emit switchView(params);

}

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

// DraftsListView::handleLongPressed

// @see header

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

void DraftsListView::handleLongPressed(HbAbstractViewItem *item, const QPointF &coords)

{

    if (this->isVisible()) {

        // Set the current index as tapped items index.

        mListView->setCurrentIndex(item->modelIndex(), QItemSelectionModel::Select);

        HbMenu *contextMenu = new HbMenu();

        contextMenu->setAttribute(Qt::WA_DeleteOnClose);

        // Open

        HbAction* openAction = contextMenu->addAction(LOC_COMMON_OPEN);

        connect(openAction, SIGNAL(triggered()), this, SLOT(openDraftMessage()));

        // Delete

        HbAction *deletAction = contextMenu->addAction(LOC_COMMON_DELETE);

        connect(deletAction, SIGNAL(triggered()), this, SLOT(deleteDraftMessage()));

        contextMenu->setPreferredPos(coords);

        contextMenu->show();

    }

}

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

// DraftsListView::handleViewExtnActivated

// @see header

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

void DraftsListView::handleViewExtnActivated(HbListWidgetItem *item)

{

    int row = mViewExtnList->row(item);

    if (CONVERSATIONS_EXTN == row) {

        QVariantList param;

        param << MsgBaseView::CLV; // target view

        param << MsgBaseView::DLV; // source view

        emit switchView(param);

    }

}

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

// DraftsListView::handleModelChanged

// @see header

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

void DraftsListView::handleModelChanged()

{

    // If there are no items in list view, delete the menu item.

    HbMenu *mainMenu = this->menu();

    if (!mListView->model()->rowCount()) {

        mainMenu->clearActions();

    }

    else {

        if (this->menu()->isEmpty()) {

            mainMenu->addAction(LOC_MENU_DELETE_ALL, this, SLOT(deleteAllDraftMessage()));

        }

    }

}

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

// DraftsListView::onDialogDeleteMsg

// @see header

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

void DraftsListView::onDialogDeleteMsg(HbAction* action)

{

    HbMessageBox *dlg = qobject_cast<HbMessageBox*> (sender());

    if (action == dlg->actions().at(0)) {

        QModelIndex index = mListView->currentIndex();

        if (index.isValid()) {

            int msgId = index.data(ConvergedMsgId).toInt();

            QList<int> msgIdList;

            msgIdList.append(msgId);

            ConversationsEngine::instance()->deleteMessages(msgIdList);

        }

    }

}

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

// DraftsListView::onDialogDeleteMsg

// @see header

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

void DraftsListView::onDialogDeleteAllMessages(HbAction* action)

{

    HbMessageBox *dlg = qobject_cast<HbMessageBox*> (sender());

    if (action == dlg->actions().at(0)) {

        ConversationsEngine::instance()->deleteAllDraftMessages();

    }

}

// EOF