/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbWidgets module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

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

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include <QAbstractItemModel>

#include "hbdataformmodelitem_p.h"

#include "hbdataformmodelitem.h"

#include "hbdataformmodel.h"

#include "hbdataformmodel_p.h"

class QAbstractItemModel;

HbDataFormModelItemPrivate::HbDataFormModelItemPrivate():

    mParentItem(0),

    mModel(0),

    mFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled)

{

    q_ptr = 0;

}

HbDataFormModelItemPrivate::~HbDataFormModelItemPrivate()

{

}

QString HbDataFormModelItemPrivate::dirtyProperty()

{

    return mDirtyProperty;

}

/*!

    @beta

    @hbwidgets

    \class HbDataFormModelItem hbdataformmodelitem.cpp

    \brief The HbDataFormModelItem class is for applications to add their data.

    Data is stored in this class and it is added to model.

    HbDataFormModelItem class can be used to store data in hierarchical manner

    For Example if below is the model hierarchy for profiles application

    - general

        - ringtone_general

            - unknowncaller_ringtone_general,

    Then sample code to create above model and data it to dataForm  would be,

    \code

    HbDataForm* form = new HbDataForm();

    form->setHeading(QString("Profiles"));

    form->setDescription(QString("With profiles you can define themes used in different profiles"));

    HbDataFormModel *model = new HbDataFormModel();  

    HbDataFormModelItem *general = model->appendDataFormPage(QString("General"));

    HbDataFormModelItem *ringToneGeneral =

        model->appendDataFormGroup(QString("Ring Tones"), general);

    HbDataFormModelItem *unknownCallerGeneral =

        model->appendDataFormGroupPage(QString("Unknown Caller"), ringToneGeneral);

    form->setModel(model);

    \endcode

*/

/*!

    \enum HbDataFormModelItem::Roles

    This enum defines the Roles supported by dataForm.Any data from application 

    can be added through these Roles.

 */

/*!

    \var HbDataFormModelItem::KeyRole

    KeyRole: This Role is used for the key string for the data item. This will be used 

    for storing and loading the data from central repository.

 */

/*!

    \var HbDataFormModelItem::LabelRole

    LabelRole: This Role is used for data label of the DataFormViewItem

 */

/*!

    \var HbDataFormModelItem::ItemTypeRole

    ItemTypeRole: This Role is used for data itemType of the HbDataFormModelItem

 */

/*!

    \var HbDataFormModelItem::PropertyRole

    PropertyRole: This Role is used for data properties of the contentwidget in data item.

 */

/*!

    \var HbDataFormModelItem::DescriptionRole

    DescriptionRole: This Role will add a description text in model item visualization. This role

    is valid only for GroupItem and data items ( > GroupPageItem ).

 */

/*!

    \var HbDataFormModelItem::DescriptionRole

    DescriptionRole: This Role will add a description text in model item visualization. This role

    is valid only for GroupItem and data items ( > GroupPageItem ).

 */

/*!

    \enum HbDataFormModelItem::DataItemType

    This enum defines itemtypes supported in dataform.

    Enum also defines itemtype for custom types.

 */

/*!

    \var HbDataFormModelItem::FormPageItem

    FormPageItem: Item Type is FormPageItem. FormPage is usually the top level item supported in 

    HbDataForm.

 */

/*!

    \var HbDataFormModelItem::GroupItem

    GroupItem is used for grouping diffrent group pages or grouping data items under one group

    heading.

 */

/*!

    \var HbDataFormModelItem::GroupPageItem

    GroupPageItem: This itemType specifies the page for different groups.

    For Ex: In Profiles application, RingTones is group and under RingTones 

    "KnownCallers","UnKnownCallers" and "Friends" can be different grouppages.

    GroupPageItem can be added only inside GroupItem.

 */

/*!

    \var HbDataFormModelItem::SliderItem

    SliderItem:  This itemType is for slider type of data item

 */

/*!

    \var HbDataFormModelItem::VolumeSliderItem

    VolumeSliderItem:  This itemType is for volume slider type of data item

 */

/*!

    \var HbDataFormModelItem::CheckBoxItem

    CheckBoxItem:  This itemType is for check box type of data item

 */

/*!

    \var HbDataFormModelItem::TextItem

    TextItem:  This itemType is for text type of data item

               The TextItem by default has maximum 4 rows. 

               Application can configure thisvalue using HbLineEdit Property maxRows. 

               This Property Value has to be set using SetContentWidgetData API.                

 */

/*!

    \var HbDataFormModelItem::ToggleValueItem

    ToggleValueItem:  This itemType is for toggle type of data item

    For data the toggle values the button properties( text and additionalText ) can

    be used. User can connect to dataChanged signal from HbDataFormModel to get 

    notification when toggle data item value is changed. The "text" property of

    HbPushButton holds the current value of toggle data item. Below is the sample code:

    \code

    {

        HbDataForm *form = new HbDataForm();

        model = new HbDataFormModel();

        item = model->appendDataFormItem(HbDataFormModelItem::ToggleValueItem, QString("my toggle"));

        item->setContentWidgetData(QString("text"), QString("yes"));

        item->setContentWidgetData(QString("additionalText"), QString("no"));

        connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), 

            this, SLOT(toggleChange(QModelIndex, QModelIndex)));

        HbDataFormModelItem *toggle2 = model->appendDataFormItem(

            HbDataFormModelItem::ToggleValueItem, QString("my toggle 2"));

        toggle2->setContentWidgetData(QString("text"), QString("1"));

        toggle2->setContentWidgetData(QString("additionalText"), QString("2"));

        form->setModel(model);

        mainLayout->addItem(form);

    }

    void MessageBoxView::toggleChange(QModelIndex startIn, QModelIndex endIn)

    {

        HbDataFormModelItem *itm = model->itemFromIndex(startIn);

        if(itm->type() == HbDataFormModelItem::ToggleValueItem) {

            if(itm->data(HbDataFormModelItem::LabelRole).toString() == QString("my toggle")) {

                QVariant data = itm->contentWidgetData(QString("text"));

                qDebug()<<"text"<<data.toString();

                data = itm->contentWidgetData(QString("additionalText"));

                qDebug()<<"additionalText"<<data.toString();

            }

        }

    }

    \endcode

 */

/*!

    \var HbDataFormModelItem::RadioButtonListItem

    RadioButtonListItem:  This itemType is for radio button list type of data item

 */

/*!

    \var HbDataFormModelItem::MultiselectionItem

    MultiselectionItem:  This itemType is for multi selection type of data item.

    MultiSelectionItem launches a pop-up list dialog.

 */

/*!

    \var HbDataFormModelItem::ComboBoxItem

    ComboBoxItem:  This itemType is for combo box type of data item

 */

/*!

    \var HbDataFormModelItem::CustomItemBase

    CustomItemBase:  This itemType is for CustomItemType of data item.

    Applications can use this as base value for customItems.

 */

/*!

    Constructs a new HbDataFormModelItem data class  with the given \a type , given \a label of the item

    and given \a parent.

    Value of \a type should be from

    enum DataItemType

    {

        FormPageItem,

        GroupItem,

        GroupPageItem,

        SliderItem,

        VolumeSliderItem,

        CheckBoxItem,

        TextItem,

        ToggleValueItem,

        RadioButtonListItem,

        MultiselectionItem,

        ComboBoxItem,

        CustomItemBase = FormPageItem + 100

    };

*/

HbDataFormModelItem::HbDataFormModelItem(

    HbDataFormModelItem::DataItemType type,const QString &label,

    const HbDataFormModelItem* parent):

    d_ptr(new HbDataFormModelItemPrivate())

{

    Q_D(HbDataFormModelItem);

    d->q_ptr = this ;

    d->mParentItem = const_cast<HbDataFormModelItem*>(parent);

    setData(ItemTypeRole, type);

    setData(LabelRole, label);

}

/*!

    Constructs a new HbDataFormModelItem class  with the given \a parent.

*/

HbDataFormModelItem::HbDataFormModelItem(const HbDataFormModelItem* parent):

    d_ptr(new HbDataFormModelItemPrivate())

{

    Q_D(HbDataFormModelItem);

    d->q_ptr = this ;

    d->mParentItem = const_cast<HbDataFormModelItem*>(parent);

}

/*!

    Destructor

*/

HbDataFormModelItem::~HbDataFormModelItem()

{

    Q_D(HbDataFormModelItem);

    int childcount = childCount();

    for (int index = 0; index < childcount; index++) {

        HbDataFormModelItem* item = childAt(0);

        d->mChildItems.removeAt(0);

        delete item;

    }

    d->mProperties.clear();

    d->mItemData.clear();

    delete d_ptr;

}

/*!

    @beta

    Adds the given \a child to the children list of current item.

    \sa insertChild, insertChildren

*/

void HbDataFormModelItem::appendChild(HbDataFormModelItem *child)

{

    Q_D(HbDataFormModelItem);    

    if(child){

        child->setParent(this);

        if(d->mModel) {

            child->setModel(d->mModel);

            HbDataFormModel* model = static_cast<HbDataFormModel*>(d->mModel);

            model->d_func()->rowsAboutToBeInserted(this, d->mChildItems.count(), d->mChildItems.count());

            d->mChildItems.append(child);

            model->d_func()->rowsInserted();

        }

        else {

            d->mChildItems.append(child);

        }

    }

}

/*!

    @beta

    Adds the given \a child to the children list of current item at the given \a index.

    \sa insertChildren, appendChild

*/

void HbDataFormModelItem::insertChild(int index, HbDataFormModelItem *child)

{

    Q_D(HbDataFormModelItem);

    if(child) {

        child->setParent(this);

        if(d->mModel) {

            child->setModel(model());

            HbDataFormModel* model = static_cast<HbDataFormModel*>(d->mModel);

            model->d_func()->rowsAboutToBeInserted(this, index, index);

            d->mChildItems.insert(index,child);

            model->d_func()->rowsInserted();

        } else {

            d->mChildItems.insert(index,child);

        }

    }

}

/*!

    @beta

    Inserts the given list of \a items starting from the given \a row.

    \sa insertChild, appendChild

*/

void HbDataFormModelItem::insertChildren(int row , int count ,

        QList<HbDataFormModelItem*> items)

{

    Q_D(HbDataFormModelItem);

    HbDataFormModel* model = static_cast<HbDataFormModel*>(d->mModel);

    model->d_func()->rowsAboutToBeInserted(this, row, row + count - 1);

    for(int index = 0; index < count; index++) {

        d->mChildItems.insert(row + index, items.at(index));

    }

    model->d_func()->rowsInserted();

}

/*!

    @beta

    Removes the child item at the given \a index. The item at \a index is

    deleted.

    \sa removeChildren

*/

void HbDataFormModelItem::removeChild(int index)

{

    Q_D(HbDataFormModelItem);

    HbDataFormModel* model = static_cast<HbDataFormModel*>(d->mModel);

    model->d_func()->rowsAboutToBeRemoved(this, index, index);

    HbDataFormModelItem *item = d->mChildItems.takeAt(index);

    if ( item ) {

        delete item;

        item = 0;

    }

    model->d_func()->rowsRemoved();

}

/*!

    @beta

    Removes the given no of \a count of childitems from the given \a startindex. The

    items are deleted.

    \sa removeChild

*/

void HbDataFormModelItem::removeChildren(int startIndex, int count)

{

     Q_D(HbDataFormModelItem);

     HbDataFormModel* model = static_cast<HbDataFormModel*>(d->mModel);

     model->d_func()->rowsAboutToBeRemoved(this, startIndex, startIndex + count -1); 

     for(int index = 0; index < count ;index++) {

         removeChild(startIndex);

     }

     model->d_func()->rowsRemoved();

}

/*!

    @beta

    Returns the child item at the given \a index. 

    Returns 0 if \a index passed in greater than count or less than 0.

    \sa indexOf

*/

HbDataFormModelItem* HbDataFormModelItem::childAt(int index) const

{

    Q_D( const HbDataFormModelItem);

    if(d->mChildItems.count() > index && index > -1) {

        return d->mChildItems.at(index);

    }

    return 0;

}

/*!

    @beta

    Returns index of the given \a child.

    \sa childAt

*/

int HbDataFormModelItem::indexOf(const HbDataFormModelItem* child) const 

{

    Q_D(const HbDataFormModelItem);

    return d->mChildItems.indexOf(const_cast<HbDataFormModelItem*>(child));

}

/*!

    @beta

    Returns the number of child items.

*/

int HbDataFormModelItem::childCount() const

{

    Q_D(const HbDataFormModelItem);

    return d->mChildItems.count();

}

/*!

    @beta

    Returns the data for the given \a role. Returns empty string if DescriptionRole is queried for

    items other then GroupItem and data item.

*/

QVariant HbDataFormModelItem::data(int role ) const

{

    Q_D(const HbDataFormModelItem);

    if(role == KeyRole) {

        return d->mKey;

    } else if (role == LabelRole) {

        return d->mLabel;

    } else if (role == ItemTypeRole) {

        return d->mItemType;

    } else if (role == Qt::DecorationRole) {

        return d->mIcon;

    } else if (role == PropertyRole) {

        return d->mProperties;

    } else if (role == DescriptionRole) {

        //Description role is valid only for GroupItem and data items

        if (( d->mItemType == HbDataFormModelItem::GroupItem ) 

            || ( d->mItemType > HbDataFormModelItem::GroupPageItem )) {

            return d->mDescription;

        } else {

            return QString();

        }

    } else {

         return d->mItemData.value(role);

    }

}

/*!

    @beta

    Sets the given \a value of variant to the given \a role.

*/

 void HbDataFormModelItem::setData(int role ,const QVariant &value)

{

    Q_D(HbDataFormModelItem);

    if(role == KeyRole) {

        d->mKey = value.toString();

    } else if (role == LabelRole) {

        d->mLabel = value.toString();

        d->mDirtyProperty = "LabelRole";

    } else if (role == ItemTypeRole) {

        d->mItemType = (DataItemType)value.toInt();   

        d->mDirtyProperty = "ItemTypeRole";

    } else if (role == Qt::DecorationRole) {

        d->mIcon = value.toString();

        d->mDirtyProperty = "DecorationRole";

    } else if(role == PropertyRole){

        d->mProperties = value.toHash();

        d->mDirtyProperty = "PropertyRole";

    } else if( role == DescriptionRole ) {

        //Description role is valid only for GroupItem and data items

        if (( d->mItemType == HbDataFormModelItem::GroupItem ) 

            || ( d->mItemType > HbDataFormModelItem::GroupPageItem )) {

            d->mDescription = value.toString();

            d->mDirtyProperty = "DescriptionRole";

        }

    } else {