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

**

** 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 HbInput 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 <QGraphicsWidget>

#include <QPointer>

#include <QIcon>

#include <QGraphicsSceneMouseEvent>

#include <QGraphicsLinearLayout>

#include <hbinputregioncollector_p.h>

#include "hbdeviceprofile.h"

#include "hbdialog.h"

#include "hblabel.h"

#include "hbstyleoptionlabel_p.h"

#include "hbinputexactwordpopup.h"

#include "hbiconitem.h"

#include "hbinputsettingproxy.h"

#include "hbframeitem.h"

#include "hbframedrawer.h"

#include "hbdialog_p.h"

const qreal HbExactWordPopupHeight = 50.0;

class HbExactWordPopupPrivate : public HbDialogPrivate

{

    Q_DECLARE_PUBLIC(HbExactWordPopup)

public:

    HbExactWordPopupPrivate();

    ~HbExactWordPopupPrivate();

    void initBackground();

public:

    HbLabel *mText;

    HbFrameItem *mPopupBackground;

};

HbExactWordPopupPrivate::HbExactWordPopupPrivate()

 : mText(0), mPopupBackground(0)

{

}

HbExactWordPopupPrivate::~HbExactWordPopupPrivate()

{

}

void HbExactWordPopupPrivate::initBackground()

{

    Q_Q(HbExactWordPopup);

    mPopupBackground = static_cast<HbFrameItem*>(q->primitive(HbStyle::P_Popup_background));

    if (!mPopupBackground) {

        mPopupBackground = static_cast<HbFrameItem*>(q->style()->createPrimitive((HbStyle::Primitive)(HbStyle::P_Popup_background), q));

    }

    if (mPopupBackground->frameDrawer().isNull()) {

        HbFrameDrawer *fd = new HbFrameDrawer("qtg_fr_popup_secondary", HbFrameDrawer::NinePieces);

        mPopupBackground->setFrameDrawer(fd);

    }

}

HbExactWordPopup* HbExactWordPopup::instance(HbExactWordPopupIndicator indicatorArrow)

{

    static QPointer<HbExactWordPopup> exactWordPopup;

    if (!exactWordPopup) {

        // HbExactWordPopup is owned by the scene

        exactWordPopup = new HbExactWordPopup( 0, indicatorArrow );

    }

    return exactWordPopup;

}

/*!

    Constructor.

    \param parent An optional parameter.

*/

HbExactWordPopup::HbExactWordPopup(QGraphicsWidget *parent, HbExactWordPopupIndicator indicatorArrow)

 : HbDialog(*new HbExactWordPopupPrivate(), parent)

{

    Q_D(HbExactWordPopup);

    HbInputRegionCollector::instance()->attach(this);

    d->mText = new HbLabel();

    d->mText->setAlignment(Qt::AlignCenter);

    d->mText->setFontSpec(HbFontSpec(HbFontSpec::Primary));

    d->mText->setContentsMargins(0, 0, 0, 0);

    setContentWidget(d->mText);

    d->initBackground();

    setTimeout(HbPopup::NoTimeout);

    setBackgroundFaded(false);

    setDismissPolicy(HbPopup::TapInside);

    setFocusPolicy(Qt::ClickFocus);

    setModal(false);

    setContentsMargins(0, 0, 0, 0);

    // Make sure the exact word popup never steals focus.

    setFlag(QGraphicsItem::ItemIsPanel, true);

    setActive(false);

    setIndicatorArrow(indicatorArrow);

}

/*!

    Returns the text of the tooltip. The default value is "Exact Word popup text".

    \sa setText()

*/

QString HbExactWordPopup::text()

{

    Q_D(HbExactWordPopup);

    return d->mText->plainText();

}

/*!

    Sets the text of the label within the progress note.

    \sa text()

*/

void HbExactWordPopup::setText(const QString &newText)

{

    Q_D(HbExactWordPopup);

    d->mText->setPlainText(newText);

}

/*!

    Displays exact word popup at a given point

    \sa hideText()

*/

void HbExactWordPopup::showText(QPointF pos)

{

    Q_D(HbExactWordPopup);

    QFontMetrics fontMetrics(HbFontSpec(HbFontSpec::Primary).font());

    qreal width = fontMetrics.width(text());

    d->mText->setMinimumWidth(width);

    d->mText->setMaximumWidth(width);

    pos.setY(pos.y() - HbExactWordPopupHeight);

    setPos(pos);

    show();

}

/*!

    Hides exact word popup

    \sa hideText()

*/

void HbExactWordPopup::hideText()

{

    close();

}

void HbExactWordPopup::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    if (contains(mapFromScene(event->scenePos()))) {

        // commit word only if mouse release event happens inside popup area

        emit exactWordSelected();

        // this call closes the popup, and this is called only when mouse relase event happens

        // inside popup area

        HbDialog::mouseReleaseEvent(event);

    }

    // if mouse release event happens outside popup area, don't commit or close the popup

}

void HbExactWordPopup::updatePrimitives()

{

    Q_D(HbExactWordPopup);

    d->mPopupBackground->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

    d->mPopupBackground->frameDrawer().setFrameGraphicsName("qtg_fr_popup_secondary");

    d->mPopupBackground->setGeometry(boundingRect());

}

// this method is called whenever there is a switch of keypad usage from h/w to virtual

// h/w keypad needs an indicator, whereas virtual does not, hence set the image appropriately.

void HbExactWordPopup::setIndicatorArrow(HbExactWordPopupIndicator indicatorArrow)

{

    Q_D(HbExactWordPopup);

    if (indicatorArrow == HbNoIndicatorArrow) {

        d->mText->setIcon(HbIcon());

    } else {

        d->mText->setIcon(HbIcon("qtg_graf_inpu_swipe"));

   }

}