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

**

** 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 "hbgroupboxcontentwidget_p.h"

#include <hbstyleoption_p.h>

#include <hbscrollarea.h>

#include <QGraphicsSceneMouseEvent>

#include <hbwidgetfeedback.h>

#ifdef HB_GESTURE_FW

#include <hbtapgesture.h>

#include <hbtapandholdgesture.h>

#include <QGesture>

#endif 

/*

    internal

    constructs HbGroupBoxContentWidget

    HbGroupBoxContentWidget is internal to HbGroupBox, and is applicable to RichLabel and

    CollapsingContainer type.

    HbGroupBoxContentWidget holds the body content.

*/

HbGroupBoxContentWidget::HbGroupBoxContentWidget(QGraphicsItem *parent ) :

    HbWidget(parent),

    mContent(0),

    mBackgroundItem(0),

    groupBoxType( GroupBoxTypeUnknown ),

    contentPressed(false)

{

    groupBox = qgraphicsitem_cast<HbGroupBox*>( parent );

    createPrimitives();

    createConnection();   

#ifdef HB_GESTURE_FW

    grabGesture(Qt::TapGesture);

#endif 

}

/*

    internal

    Destructs HbGroupBoxContentWidget

*/

HbGroupBoxContentWidget::~HbGroupBoxContentWidget()

{

}

/*

    create primitives

*/

void HbGroupBoxContentWidget::createPrimitives()

{

    if( groupBoxType == GroupBoxRichLabel ){

        if ( !mBackgroundItem ) {

            mBackgroundItem = style()->createPrimitive( HbStyle::P_GroupBoxContent_background , this );

        }

    }else if ( mBackgroundItem ) {

            delete mBackgroundItem;

            mBackgroundItem = 0;

    }

}

/*!

    updates the primitives

 */

void HbGroupBoxContentWidget::updatePrimitives()

{

   HbStyleOption option;

   initStyleOption( &option );

    if ( mBackgroundItem ) {

        style()->updatePrimitive( mBackgroundItem , HbStyle::P_GroupBoxContent_background , &option );

    }

}

/*

    internal

    creates signal connection for contentWidget

*/

void HbGroupBoxContentWidget::createConnection()

{

    // to avoid duplicate signals getting emitted from groupBox contentWidget

    disconnect( this , SIGNAL ( clicked() ) , groupBox , SIGNAL ( clicked() ));

    disconnect ( this , SIGNAL( longPress( QPointF ) ) , groupBox , SIGNAL( longPress( QPointF ) ));

    connect ( this , SIGNAL ( clicked() ) , groupBox , SIGNAL ( clicked() ));

    connect ( this , SIGNAL( longPress( QPointF ) ) , groupBox , SIGNAL( longPress( QPointF ) ));

}

/*!

    internal

    Sets the groupbox content widgets type.

    Creates primitves if needed based on type set

*/

void HbGroupBoxContentWidget::setType(GroupBoxType type)

{

    if( groupBoxType != type ){

        groupBoxType = type;

        // set dynamic properties for type

        if(groupBoxType == GroupBoxCollapsingContainer)

            setProperty("groupBoxType",3);

        else if(groupBoxType == GroupBoxRichLabel)

            setProperty("groupBoxType",2);

        if(groupBoxType != GroupBoxSimpleLabel){

           createPrimitives();

           //createConnection();

        }

    }

}

/*!

    internal

    Sets HbGroupBoxContentWidget content

*/

void HbGroupBoxContentWidget::setContentWidget( HbWidget *widget )

{

    // delete old content set

    if ( mContent ) {

        delete mContent; 

        mContent = 0;

    }

     // if NULL widget is passed don't do anything

    if ( !widget   ) {

        return;

    }

    mContent = widget;

    style()->setItemName( mContent , "content" );

    mContent->setParentItem( this);

    if(groupBoxType == GroupBoxRichLabel){

        contentPressed = false;

    }

}

/*!

    Returns the pointer for \a primitive passed.

    Will return NULL if \a primitive passed is invalid

*/

QGraphicsItem* HbGroupBoxContentWidget::primitive(HbStyle::Primitive primitive) const

{

    switch (primitive) {

        case HbStyle::P_GroupBoxContent_background:

            return mBackgroundItem;

        default:

            return 0;

    }

}

/*!

    \reimp

 */

void HbGroupBoxContentWidget::initStyleOption( HbStyleOption *option )const

{

    HbWidget::initStyleOption (option);

    if (contentPressed ) {

        option->state = QStyle::State_On;

    } else {

        option->state = QStyle::State_Off;

    }

}

/*!

    \reimp

 */

QVariant HbGroupBoxContentWidget::itemChange( GraphicsItemChange change, const QVariant &value )

{

    switch( change )

    {

        case ItemChildAddedChange:

        case ItemChildRemovedChange:

            repolish();

             break;

        case ItemSceneHasChanged:		

            updatePrimitives();

            break;

        default:

            break;

    }

    return HbWidget::itemChange( change, value );

}

/*!

    \reimp

 */

void HbGroupBoxContentWidget::mousePressEvent( QGraphicsSceneMouseEvent *event )

{

#ifdef HB_GESTURE_FW

    Q_UNUSED(event)

#else 

    HbWidget::mousePressEvent(event);

    HbWidgetFeedback::triggered(this, Hb::InstantPressed);

    contentPressed=!contentPressed;

    updatePrimitives();

    event->accept(); 

#endif 

}

/*!

    \reimp

 */

void HbGroupBoxContentWidget::mouseReleaseEvent( QGraphicsSceneMouseEvent *event )

{

#ifdef HB_GESTURE_FW

    Q_UNUSED(event)

#else 

    HbWidget::mouseReleaseEvent(event);

    HbWidgetFeedback::triggered(this, Hb::InstantReleased);

    contentPressed=!contentPressed;    

    updatePrimitives();

    emit clicked();

#endif 

}

/*!

    \reimp

 */

void HbGroupBoxContentWidget::polish( HbStyleParameters& params )

{

    if(groupBoxType == GroupBoxCollapsingContainer){

        // set dynamic property for contentwidget, if it is scrollable content

        // if content is scrollable, then groupBox leaves out margin spacing b/w heading

        // and content area, otherwise zero margin spacing will be taken

        HbScrollArea* scrollContent = qobject_cast<HbScrollArea*>( mContent );		

        if(scrollContent)

           setProperty("scrollableContent",true);

        else

           setProperty("scrollableContent",false);

        }

    HbWidget::polish(params);

}

#ifdef HB_GESTURE_FW

void HbGroupBoxContentWidget::gestureEvent(QGestureEvent *event)

{

    if(HbTapGesture *tap = qobject_cast<HbTapGesture *>(event->gesture(Qt::TapGesture))) {

        switch(tap->state()) {

        case Qt::GestureStarted:  //

            contentPressed=true;

            updatePrimitives();

            break;

        case Qt::GestureCanceled: // Reset state

            contentPressed=false;

            updatePrimitives();

            break;

        case Qt::GestureUpdated:

            if(tap->tapStyleHint() == HbTapGesture::TapAndHold) {

                emit longPress(event->mapToGraphicsScene(tap->position()));

            }

            break;

        case Qt::GestureFinished: // emit clicked

            contentPressed=false;

            updatePrimitives();

            if(tap->tapStyleHint() == HbTapGesture::Tap) {

                emit clicked();

            }

            break;

        default:

            break;

        }

    } 

}

#endif