/*

 * 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: 

 *

 */

#include <qgraphicslinearlayout.h>

#include <QtGui>

#include <hbdocumentloader.h>

#include <hblabel.h>

#include <hbpushbutton.h>

#include <hbcolorscheme.h>

#include <hbevent.h>

#include <hbframedrawer.h>

#include <hbframeitem.h>

#include <hbtapgesture.h>

#include <hbinstantfeedback.h>

#include "nmicons.h"

#include "nmhswidgettitlerow.h"

#include "nmhswidgetconsts.h"

#include "emailtrace.h"

NmHsWidgetTitleRow::NmHsWidgetTitleRow(QGraphicsItem *parent, Qt::WindowFlags flags) :

    HbWidget(parent, flags), 

    mContainer(0),

    mMailboxIcon(0), 

    mMailboxInfo(0), 

    mUnreadCountLabel(0),

    mCollapseExpIconLabel(0), 

    mAccountName(),

    mUnreadCount(0),

    mBackgroundLayoutItem(0)

{

    NM_FUNCTION;

    grabGesture(Qt::TapGesture);

}

/*!

 Destructor

 */

NmHsWidgetTitleRow::~NmHsWidgetTitleRow()

{

    NM_FUNCTION; 

}

/*!

 \fn QPainterPath NmHsWidgetTitleRow::shape()

 Called by home screen fw to check widget boundaries, needed to draw

 outside widget boundingRect.

 /return QPainterPath path describing actual boundaries of widget 

  including child items

 */

QPainterPath NmHsWidgetTitleRow::shape() const

{

    NM_FUNCTION;

    QPainterPath path;

    path.setFillRule(Qt::WindingFill);

    if (mContainer){

        path.addRect(mContainer->geometry());

    }

    if (mMailboxIcon){

        path.addRect(mMailboxIcon->geometry());

    }    

    return path.simplified();

}

/*!

 \fn qreal NmHsWidgetTitleRow::containerHeight()

 /return qreal defining title row container height in pixels

 */

qreal NmHsWidgetTitleRow::containerHeight()

{

    if (mContainer){

        return mContainer->preferredHeight();

    }

    return 0;

}

/*

 Setup email row ui

  Must be called after constructor.

   /return true if loading succeeded, otherwise false. False indicates that object is unusable.

 */

bool NmHsWidgetTitleRow::setupUI(HbDocumentLoader &loader)

    {

    NM_FUNCTION;

    if(!loadDocML(loader) || !setupGraphics()){

        return false;

    }

    return true;

    }

/*!

 Loads layout data and child items from docml file. Must be called after constructor.

 /return true if loading succeeded, otherwise false. False indicates that object is unusable

 */

bool NmHsWidgetTitleRow::loadDocML(HbDocumentLoader &loader)

{

    NM_FUNCTION;

    QT_TRY{

        // find container widget

        mContainer = static_cast<HbWidget*> (loader.findWidget(KNmHsWidgetTitleRowContainer));

        if (!mContainer) {

            NM_ERROR(1,"NmHsWidgetTitleRow::loadDocML Fail @ container");

            return false;

        }

        //child items possible to update

        mMailboxIcon = static_cast<HbLabel*> (loader.findWidget(KNmHsWidgetTitleRowMailboxIcon));

        mMailboxInfo = static_cast<HbLabel*> (loader.findWidget(KNmHsWidgetTitleRowMailboxNameLabel));

        mUnreadCountLabel = static_cast<HbLabel*> (loader.findWidget(

            KNmHsWidgetTitleRowUnreadCountLabel));

        mCollapseExpIconLabel = static_cast<HbPushButton*> (loader.findWidget(

            KNmHsWidgetTitleRowCollapseExpandIconLabel));

        if (!mMailboxIcon || !mMailboxInfo || !mUnreadCountLabel || !mCollapseExpIconLabel) {

            NM_ERROR(1,"NmHsWidgetTitleRow::loadDocML Fail @ icons & labels");

            return false;

        }

		//Expand collapse button

        connect(mCollapseExpIconLabel, SIGNAL(clicked()), this, SIGNAL(expandCollapseButtonPressed()));

        return true;

    }

    QT_CATCH(...){

        return false;

    }

}

/*

 Setup graphics that cannot be loaded from docml.

  /return true if loading succeeded, otherwise false. False indicates that object is unusable.

 */

bool NmHsWidgetTitleRow::setupGraphics()

{

    NM_FUNCTION;

    HbFrameDrawer* backgroundFrameDrawer = 0;

    QT_TRY{

        //pressed background

        backgroundFrameDrawer = new HbFrameDrawer("qtg_fr_hsitems_pressed", HbFrameDrawer::NinePieces);

        mBackgroundLayoutItem = new HbFrameItem( backgroundFrameDrawer );

        mContainer->setBackgroundItem( mBackgroundLayoutItem );

		mBackgroundLayoutItem->hide();

        //set fonts color

		setHighlighedFontsColor(false);

		//to get gestures

		setGeometry(mContainer->childrenBoundingRect());

        return true;

    }

    QT_CATCH(...){

        if(!mBackgroundLayoutItem && backgroundFrameDrawer){

            delete backgroundFrameDrawer;

            backgroundFrameDrawer = NULL;

        }

        return false;

    }

}

/*!

 Slot for updating account name, calls updateData to update ui.

 */

void NmHsWidgetTitleRow::updateAccountName(const QString& accountName)

{

    NM_FUNCTION;

    mAccountName = accountName;

    updateData();

}

/*!

 Set account icon name

 */

void NmHsWidgetTitleRow::setAccountIcon(const QString& accountIconName)

{

    NM_FUNCTION;

    mMailboxIcon->setIcon(accountIconName);

}

/*!

 Slot for updating unread count, calls updateData to update ui.

 */

void NmHsWidgetTitleRow::updateUnreadCount(const int& unreadCount)

{

    NM_FUNCTION;

    mUnreadCount = unreadCount;

    updateData();

}

/*!

 Slot for updating expand collapse icon

 */

void NmHsWidgetTitleRow::setExpandCollapseIcon(const bool& expand)

{

    NM_FUNCTION;

    if(expand){

        HbIcon icon("qtg_mono_arrow_up");

        mCollapseExpIconLabel->setIcon(icon);

    }

    else{

        HbIcon icon("qtg_mono_arrow_down");

        mCollapseExpIconLabel->setIcon(icon);

    }

}

/*!

 Update the data displayed in the UI

 */

void NmHsWidgetTitleRow::updateData()

{

    NM_FUNCTION;

    mMailboxInfo->setPlainText(mAccountName);

    //If unread count is -1, hide the unread count label completely.

    //This indicates that there are no mails at all (or the initial sync is not done)

    if (mUnreadCount >= 0) {

        mUnreadCountLabel->setPlainText(unreadCount);

        QFontMetrics fm(mUnreadCountLabel->font());

        qreal textWidth = fm.width(unreadCount);

        mUnreadCountLabel->setMaximumWidth(textWidth);

    }

    else {

        mUnreadCountLabel->setMaximumWidth(0);

    }

}

/*!

    sets fonts color.

    /param bool pressed indicates if row is pressed down or not

*/

void NmHsWidgetTitleRow::setHighlighedFontsColor( bool pressed )

    {

    NM_FUNCTION;

    QColor newFontColor;

    if(pressed){

        newFontColor = HbColorScheme::color("qtc_hs_list_item_pressed");

    }

    else{

        newFontColor = HbColorScheme::color("qtc_hs_list_item_title_normal");

    }

    mMailboxInfo->setTextColor(newFontColor);

    mUnreadCountLabel->setTextColor(newFontColor);

    }

/*!

    change background pressed state

    /param bool show if true then shown, false hide

*/

void NmHsWidgetTitleRow::showHighlight( bool show )

    {

    NM_FUNCTION;;

    if(show){

        mBackgroundLayoutItem->show();

    }

    else{

        mBackgroundLayoutItem->hide();

    }

    }

/*

 * NmHsWidgetTitleRow::gestureEvent(QGestureEvent *event)

 */

void NmHsWidgetTitleRow::gestureEvent(QGestureEvent *event)

{

    NM_FUNCTION;

    if(!event){

        return;

    }    

    HbTapGesture *gesture = qobject_cast<HbTapGesture *>(event->gesture(Qt::TapGesture));

    if(!gesture){

        return;

    }

    //to avoid opening email account mistakenly  when tabbing expand/collapse button

    //we dont handle events that are on the top, down or right side of the button

    QPointF posFromScene = mapFromScene(event->mapToGraphicsScene(gesture->position()));

    bool inArea = false;

    if(this->layoutDirection() == Qt::LeftToRight &&  

       posFromScene.x() < mUnreadCountLabel->geometry().right()) {

        inArea = true;

    }

    else if(this->layoutDirection() == Qt::RightToLeft && 

            posFromScene.x() > mUnreadCountLabel->geometry().right()) {

        inArea = true;

    }

    if (inArea) {    

        switch (gesture->state()) {

            case Qt::GestureStarted:

                setHighlighedFontsColor(true);

                showHighlight(true);

            break;

            case Qt::GestureCanceled:

                setHighlighedFontsColor(false);

                showHighlight(false);

            break;

            case Qt::GestureFinished:

                setHighlighedFontsColor(false);

                showHighlight(false);

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

                    HbInstantFeedback::play(HbFeedback::BasicItem);

                    emit mailboxLaunchTriggered();

                }

            break;

        default: 

            break;

        }

    }

}

/*

 * NmHsWidgetTitleRow::event()

 */

bool NmHsWidgetTitleRow::event( QEvent *event )

{

    NM_FUNCTION;

    QEvent::Type eventType = event->type();

    if( eventType == HbEvent::ThemeChanged ){

        setHighlighedFontsColor(false);

        return true;

    }

    return HbWidget::event(event);

}