/*

* Copyright (c) 2010 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: Attachment list item widget

*

*/

#include "nmailuiwidgetsheaders.h"

static const QString FILE_PATH_WIDGETML = ":nmattachmentlistitem.widgetml";

static const QString FILE_PATH_CSS = ":nmattachmentlistitem.css";

static const QString LIST_ITEM_BG_FRAME_NORMAL ("qtg_fr_list_normal");

static const QString LIST_ITEM_BG_FRAME_PRESSED("qtg_fr_list_pressed");

static const int PROGRESSBAR_MIN = 0; 

static const int PROGRESSBAR_MAX = 100;

static const int PROGRESSBAR_HIDE_COUNTDOWN = 500;

/*!

 @nmailuiwidgets

 \class NmAttachmentListItem

 \brief The NmAttachmentListItem widget provides for showing a single attachment with file size and

        download progress in the attachment list.

 */

/*!

    Constructs a new NmAttachmentListItem with \a parent.

 */

NmAttachmentListItem::NmAttachmentListItem(QGraphicsItem *parent)

    : HbWidget( parent ),

      mFileNameText(NULL),

      mFileSizeText(NULL),

      mProgressBar(NULL),

      mBackGround(NULL)

{

    NM_FUNCTION;

    init( );

    // Informs GestureFramework that NmAttachmentListItem widget is interested 

    // Tap gesture and TapAndHold gesture.

    grabGesture(Qt::TapGesture);

    HbEffect::add("mailAttachmentWidget", "listviewitem_press", "pressed");

    HbEffect::add("mailAttachmentWidget", "listviewitem_release", "released");

}

/*!

    Setter for items text color override. This fucntion can be used

    if theme background is not used and text needs to be shown in diferent color.

 */

void NmAttachmentListItem::setTextColor(const QColor color)

{

    NM_FUNCTION;

    mTextColor=color;

    if (mTextColor.isValid() && mFileNameText){

        mFileNameText->setTextColor(mTextColor);

    }    

}

/*!

    Destructor.

 */

NmAttachmentListItem::~NmAttachmentListItem( )

{

    NM_FUNCTION;

    HbStyleLoader::unregisterFilePath(FILE_PATH_WIDGETML);

    HbStyleLoader::unregisterFilePath(FILE_PATH_CSS);

}

/*!

    Set the text to be displayed in the file name item.

 */

void NmAttachmentListItem::setFileNameText(const QString &fileName)

{

    NM_FUNCTION;

    if (mFileNameText){

        if (mTextColor.isValid()){

            mFileNameText->setTextColor(mTextColor);

        }

        mFileNameText->setTextWrapping(Hb::TextNoWrap);

        mFileNameText->setText(fileName);    

    }

}

/*!

    Set the text to be displayed in the file size item

 */

void NmAttachmentListItem::setFileSizeText(const QString &fileSize)

{

    NM_FUNCTION;

    if (mFileSizeText){

        if (mTextColor.isValid()){

            mFileSizeText->setTextColor(mTextColor);

        }

        mFileSizeText->setTextWrapping(Hb::TextNoWrap);

        mFileSizeText->setText(fileSize);

    }

}

/*!

    Set the download progress bar value (0-100)%, if value is 0 progress bar is hidden

 */

void NmAttachmentListItem::setProgressBarValue(const int value)

{

    NM_FUNCTION;

    //first check if value is 0 or below -> hide progressbar

    if ( 0 >= value ){

        removeProgressBar();

        return;

    }

    if ( !mProgressBar ){

        mProgressBar = new HbProgressBar(this); 

        mProgressBar->setObjectName("attachmentlistitem_progress");

        mProgressBar->setRange(PROGRESSBAR_MIN,PROGRESSBAR_MAX);

        HbStyle::setItemName( mProgressBar, "progressbar" );

        repolish();

    }

    mProgressBar->setProgressValue(value);

    //start hiding count down

    if(PROGRESSBAR_MAX <= value){

        hideProgressBar();

    }

}

/*!

    Get the download progress bar value

*/

int NmAttachmentListItem::progressBarValue() const

{

    NM_FUNCTION;

    int ret = 0;

    if ( mProgressBar ){

        ret = mProgressBar->progressValue();

    }

    return ret;

}

/*!

    Hides progress bar, used if download is cancelled before 100 precent is reached

*/

void NmAttachmentListItem::hideProgressBar()

{

    NM_FUNCTION;

    QTimer::singleShot(PROGRESSBAR_HIDE_COUNTDOWN,this, SLOT(removeProgressBar()));

}

/*!

    Initialize

*/

void NmAttachmentListItem::init( )

{

    NM_FUNCTION;

    constructUi();

    //set default values

    setFlag(QGraphicsItem::ItemIsFocusable);

    setFlag(QGraphicsItem::ItemIsSelectable);

}

/*!

    Constructs the UI, sets style itemnames etc.

*/

void NmAttachmentListItem::constructUi()

{

    NM_FUNCTION;

    //background

    QScopedPointer<HbFrameItem> backGround(new HbFrameItem(this));

    backGround->frameDrawer().setFrameGraphicsName(LIST_ITEM_BG_FRAME_NORMAL);

    backGround->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

    setBackgroundItem(backGround.data());

    // ownership was transferred to base class

    mBackGround = backGround.take();

    //construct default ui.    

    HbStyleLoader::registerFilePath(FILE_PATH_WIDGETML);

    HbStyleLoader::registerFilePath(FILE_PATH_CSS);

    QScopedPointer<HbTextItem> fileNameText(new HbTextItem(this));

    fileNameText->setObjectName("nmattachmentlistitem_filenametext");

    HbStyle::setItemName( fileNameText.data(), "filename" );  

    fileNameText->setElideMode(Qt::ElideRight);

    QScopedPointer<HbTextItem> fileSizeText(new HbTextItem(this));

    fileSizeText->setObjectName("nmattachmentlistitem_filenamesize");

    HbStyle::setItemName( fileSizeText.data(), "filesize" );

    fileSizeText->setElideMode(Qt::ElideNone);

    // ownership transferred to this object

    mFileSizeText = fileSizeText.take(); 

    mFileNameText = fileNameText.take();

}

/*!

    Hides the download progress bar

 */

void NmAttachmentListItem::removeProgressBar()

{

    NM_FUNCTION;

	if ( mProgressBar ){

	    HbStyle::setItemName( mProgressBar, "" );

	    mProgressBar->deleteLater();

	    mProgressBar = 0;

	    repolish();

	}

}

/*!

    This function handles gestures

 */

void NmAttachmentListItem::gestureEvent(QGestureEvent *event)

{

    NM_FUNCTION;

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

        switch(tap->tapStyleHint()) {

        case HbTapGesture::Tap: 

            {

                Qt::GestureState state = tap->state();

                HbInstantFeedback::play(HbFeedback::Basic);

                setPressed(true);

                if (state == Qt::GestureFinished) {

                    emit itemActivated();

                    setPressed(false);

                }

                else if (state == Qt::GestureCanceled) {

                    setPressed(false);

                }

             }

             break;

         case HbTapGesture::TapAndHold:

             {

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

                 setPressed(false);

             }    

             break;

        }

    }

    else {

           HbWidget::gestureEvent(event);

    }

}

/*!

    Sets the effect of the item when tapping it

*/

void NmAttachmentListItem::setPressed(bool pressed)

{

    if (pressed) {

        setProperty("state", "pressed");

        mBackGround->frameDrawer().setFrameGraphicsName(LIST_ITEM_BG_FRAME_PRESSED);

        HbEffect::cancel(mBackGround, "released");

        HbEffect::start(mBackGround, "mailAttachmentWidget", "pressed");

    }

    else {

        setProperty("state", "normal");

        mBackGround->frameDrawer().setFrameGraphicsName(LIST_ITEM_BG_FRAME_NORMAL);

        HbEffect::cancel(mBackGround, "pressed");

        HbEffect::start(mBackGround, "mailAttachmentWidget", "released");

    }    

}