/*
* 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 "iconsview.h"

#include <QGraphicsLinearLayout>
#include <QGraphicsGridLayout>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QSignalMapper>

#include <hblistwidget.h>
#include <hblabel.h>
#include <hbpushbutton.h>
#include <hbinstance.h>
#include <hbapplication.h>
#include <hbactivitymanager.h>
#include <hbmainwindow.h>

#include <QDebug>

#define hbApp qobject_cast<HbApplication*>(qApp)

IconsView::IconsView(QGraphicsItem *parent) : HbView(parent)
{
    setTitle("Activities -Hb Model");

    mModel = new QStandardItemModel(this);
    for (int i=1; i<=8; ++i) {
        addItemToModel(i);
    }

    mList = new HbListView(this);
    mList->setModel(mModel);

    QGraphicsGridLayout *buttonsLayout = new QGraphicsGridLayout();
    HbPushButton *addItemButton = new HbPushButton("Add item");
    connect(addItemButton, SIGNAL(clicked()), this, SLOT(addItem()));
    buttonsLayout->addItem(addItemButton, 0, 0);

    HbPushButton *removeItemButtom = new HbPushButton("Remove item");
    connect(removeItemButtom, SIGNAL(clicked()), this, SLOT(removeItem()));
    buttonsLayout->addItem(removeItemButtom, 0, 1);

    HbPushButton *saveActivityAButton = new HbPushButton("Save State A");
    buttonsLayout->addItem(saveActivityAButton, 1, 0);
    HbPushButton *saveActivityBButton = new HbPushButton("Save State B");
    buttonsLayout->addItem(saveActivityBButton, 1, 1);

    buttonsLayout->setRowFixedHeight(0, 50);
    buttonsLayout->setRowFixedHeight(1, 50);

    QSignalMapper *saveActivityMapper = new QSignalMapper(this);
    saveActivityMapper->setMapping(saveActivityAButton, "State A");
    saveActivityMapper->setMapping(saveActivityBButton, "State B");
    connect(saveActivityAButton, SIGNAL(clicked()), saveActivityMapper, SLOT(map()));
    connect(saveActivityBButton, SIGNAL(clicked()), saveActivityMapper, SLOT(map()));
    connect(saveActivityMapper, SIGNAL(mapped(QString)), this, SLOT(saveActivity(QString)));

    mItemCountLabel = new HbLabel();
    mItemCountLabel->setAlignment(Qt::AlignCenter);
    mItemCountLabel->setMaximumHeight(30);
    updateCountLabel();

    QGraphicsLinearLayout *mainLayout = new QGraphicsLinearLayout(Qt::Vertical, this);
    mainLayout->addItem(mItemCountLabel);
    mainLayout->addItem(mList);
    mainLayout->addItem(buttonsLayout);

    connect(hbApp->activityManager(), SIGNAL(activityRequested(QString)), this, SLOT(loadActivity(QString)));
    bool ok = hbApp->activityManager()->waitActivity();
    if (!ok) {
        //qFatal("Subscribe failed");
    }

    setLayout(mainLayout);
}

IconsView::~IconsView()
{
}

void IconsView::addItemToModel(int number)
{
    QStandardItem *item = new QStandardItem(QIcon(QString(":data\\img%1").arg(number)), QString("Image %1").arg(number));
    mModel->appendRow(item);
}

void IconsView::addItem()
{
    addItemToModel(qrand() % 8 + 1);
    updateCountLabel();
}

void IconsView::removeItem()
{
    if (mModel->rowCount() > 0) {
        mModel->removeRow(mModel->rowCount() - 1, QModelIndex());
    }
    updateCountLabel();
}

void IconsView::updateCountLabel()
{
    mItemCountLabel->setPlainText(QString("List contains %1 items").arg(mModel->rowCount()));
}

QVariant IconsView::generateActivityData()
{
    QByteArray serializedModel;
    {
        QDataStream stream(&serializedModel, QIODevice::WriteOnly | QIODevice::Append);
        for (int row = 0; row < mModel->rowCount(); ++row) {
            stream << *mModel->item(row);
        }
    }
    return serializedModel;
}

void IconsView::saveActivity(const QString &name)
{
    HbMainWindow *mainWindow = hbInstance->allMainWindows().value(0);
    QVariantHash metadata;
    metadata.insert("screenshot", QPixmap::grabWidget(mainWindow, mainWindow->rect()));
    bool ok = hbApp->activityManager()->removeActivity(name);
    if (!ok) {
        //qFatal("Remove failed" );
    }
    ok = hbApp->activityManager()->addActivity(name, generateActivityData(), metadata);
    if (!ok) {
        qFatal("Add failed");
    }
}

void IconsView::loadActivity(const QString &name)
{
    bool ok = hbApp->activityManager()->waitActivity();
    if (!ok) {
        //qFatal("Resubscribe failed");
    }
    QVariant data = hbApp->activityManager()->activityData(name);
    loadActivity(data);
}

void IconsView::loadActivity(const QVariant &data)
{
    mModel->clear();
    QByteArray serializedModel = data.toByteArray();
    {
        QDataStream stream(&serializedModel, QIODevice::ReadOnly);
        while (!stream.atEnd()) {
            QStandardItem *item = new QStandardItem();
            stream >> *item;
            mModel->appendRow(item);
        }
    }
    updateCountLabel();
}