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

**

** 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 <hbprogressdialog.h>

#include <hbprogressdialog_p.h>

#include <hbstyleoptionprogressdialog_p.h>

#include <hbnamespace_p.h>

#include <hbaction.h>

#include <hbpopup.h>

#include <hbtextitem.h>

#include <QGraphicsItem>

/*

    \internal

    HbProgressDialogContentWidget class

    HbProgressDialogContentWidget is internal to HbProgressDialog and is the content widget to progressDialog

    HbProgressDialogContentWidget holds the text, icon and progressbar.

*/

class HbProgressDialogContentWidget : public HbWidget

{

    Q_OBJECT

    public:

    QGraphicsItem *mIconItem;

    HbProgressBar *mProgressBar;

    QGraphicsItem *mTextItem;

    HbProgressDialogPrivate *d;

    enum { Type = HbPrivate::ItemType_ProgressDialogContentWidget };

    int type() const { return Type; }

    HbProgressDialogContentWidget(HbProgressDialogPrivate *priv,QGraphicsItem* parent =0 ):HbWidget(parent),

        mIconItem(0),mProgressBar(0),mTextItem(0),d(priv)

    {

        setProperty("text",QVariant(true));

        setProperty("icon",QVariant(false));

    }

    void repolishContent()

    {

        repolish();

    }

};

/*!

    \internal

    HbProgressDialogPrivate class constructor

*/

HbProgressDialogPrivate::HbProgressDialogPrivate() :mTimer(0),mIcon(0),mContentWidget(0),

                                                    mMinDuration(0),mDelayTime(0),mTextString(QString()),

                                                    mAlign(Qt::AlignTop|Qt::AlignLeft)

{

}

/*!

    \internal

    HbProgressDialogPrivate class destructor

*/

HbProgressDialogPrivate::~HbProgressDialogPrivate()

{  

}

/*!

    \internal

    Initializes HbProgressDialogPrivate class 

*/

void HbProgressDialogPrivate::init(HbProgressDialog::ProgressDialogType type)

{

    Q_Q(HbProgressDialog);

    mContentWidget = new HbProgressDialogContentWidget(this);

    q->setContentWidget(mContentWidget);

    mNoteType = type ;

    createPrimitives();

    if(mNoteType == HbProgressDialog::WaitDialog){

        mContentWidget->mProgressBar->setRange(0,0);

    }

    else{

        mContentWidget->mProgressBar->setRange(0,100);

    }

    HbAction *action = new HbAction(q->tr("Cancel"), q);

    QObject::connect(action, SIGNAL(triggered()), q, SLOT(_q_userCancel()));

    q->addAction(action);

    mMinDuration = 1500;

    mDelayTime = 1000;

    mTimer = new QTimeLine(mDelayTime, q);

    mTimer->setFrameRange(0, 100);  

    QObject::connect(mTimer, SIGNAL(finished()), q, SLOT(_q_finished()));

    q->setTimeout(HbPopup::NoTimeout);

    q->setDismissPolicy(HbPopup::NoDismiss);

    q->hide();

}

/*

    \internal

    createPrimitives.

 */

void HbProgressDialogPrivate::createPrimitives()

{

    Q_Q(HbProgressDialog);

    if( !mContentWidget->mProgressBar ){

            mContentWidget->mProgressBar = new HbProgressBar(mContentWidget);

            HbStyle::setItemName(mContentWidget->mProgressBar, "pbar");

    }

    if ( !mContentWidget->mTextItem ) {

        mContentWidget->mTextItem = q->style()->createPrimitive(HbStyle::P_ProgressDialog_text,mContentWidget);

        HbStyle::setItemName(mContentWidget->mTextItem, "text");

    }

    if ( !mIcon.isNull() ) {

        if ( !mContentWidget->mIconItem ) {

            mContentWidget->mIconItem = q->style()->createPrimitive(HbStyle::P_ProgressDialog_icon, mContentWidget); 

            HbStyle::setItemName(mContentWidget->mIconItem, "icon");

        }

    } else {

        if( mContentWidget->mIconItem ){

            delete mContentWidget->mIconItem;

        }

        mContentWidget->mIconItem = 0;

    }

}

/*!

    \internal

    Private slot for, when user clicks on cancel button. This stops the timer and 

    dismisses the dialog.

*/

void HbProgressDialogPrivate::_q_userCancel()

{

    Q_Q(HbProgressDialog);

    flags &= ~HbProgressDialogPrivate::Closetimer;

    mTimer->stop();

    q->cancel();

}

/*!

    \internal

    Private slot which stops the timer and 

    dismisses the dialog

*/

void HbProgressDialogPrivate::_q_finished()

{

    Q_Q(HbProgressDialog);

    if(flags.testFlag(HbProgressDialogPrivate::Showtimer)){

        mTimer->stop();

        q->HbDialog::show();

        mTimer->setDuration(mMinDuration);

        mTimer->setCurrentTime(0);

        mTimer->start();

        flags &= ~HbProgressDialogPrivate::Showtimer;

        flags |= HbProgressDialogPrivate::Closetimer;

    }

    else if(flags.testFlag(HbProgressDialogPrivate::Closetimer)){

        flags &= ~HbProgressDialogPrivate::Closetimer;

        if(flags.testFlag(HbProgressDialogPrivate::Closepending)){

            q->close();

        }

    }

}

/*!

    \internal

    Private slot, for when progress value changes. When maximum value, stop the timer and close the dialog.

*/

void HbProgressDialogPrivate::_q_progressValueChanged(int value)

{

    Q_Q(HbProgressDialog);

    if(value >= mContentWidget->mProgressBar->maximum() && q->autoClose()){

        if(flags.testFlag(HbProgressDialogPrivate::Closetimer)){

            flags |= HbProgressDialogPrivate::Closepending;

            flags &= ~HbProgressDialogPrivate::Showtimer;

        }

        else if(!flags.testFlag(HbProgressDialogPrivate::Showtimer)){

            q->close();

        }

        else{

            flags &= ~HbProgressDialogPrivate::Showtimer;

        }

    }

}

/*!

    @beta

    @hbwidgets

    \class HbProgressDialog

    \brief HbProgressDialog provides feedback on the progress of a slow operation.

    \image html hbprogressdialog.png  A progress dialog.

    ProgressDialog widget displays that a process is active and also the completion level of the process to the user.

    A progress dialog is used to give the user an indication of how long an operation is going to take, and 

    to demonstrate that the application has not frozen. It can also give the user an opportunity to abort the operation.

    Progress dialog provides several types of notifications. The supported  types are:

    \code

    enum ProgressDialogType { ProgressDialog, WaitDialog };

    \endcode

    Progress dialog has the following mandatory elements:

    \li Progress bar (Determinate type) 

    \li Description

    \li Cancel button (for canceling the process) 

    Optionally, progress dialog may also includes:

    \li  Icon

    \li  Heading

    \li  Close button (same as ‘Cancel’ button during active process, closes the dialog after successful process)

    Progress dialog is modal and requires user intervention to dismiss it. 

    \sa HbDialog

    The first example is a dialog  displayed when the application is connecting

    to network. As the delay is unknown the waiting progressbar will be shown indefinitely. 

    The dialog disappears if the user clicks Cancel button or

    after the connection is established in which case the application closes the progress dialog.

    Here is an example of using the infinite progress dialog(wait dialog):

    \code

    HbProgressDialog *pDialog = new HbProgressDialog(HbProgressDialog::WaitDialog);

    pDialog->show();

    \endcode

    The progress note is closed explicitly when the user clicks Cancel button or the application 

    calls cancel().

    Another use case is an application downloading a file. 

    \code

    HbProgressDialog *pDialog = new HbProgressDialog(HbProgressDialog::ProgressDialog);

    pDialog->setMinimum(0);

    pDialog->setMaximum(1000);

    pDialog->show();

    for (int i=0;i<1000;i+=100) 

    {

      pDialog->setProgressValue(i);

      pDialog->setText(QString("Downloaded %1/1000 KB").arg(i));

    }

    \endcode

*/

/*!

    \fn void HbProgressDialog::cancelled()

    This signal is emitted when the user clicks the cancel action.

 */

/*!

    \enum HbProgressDialog::ProgressDialogType

    This enum defines available progress dialog type values.

 */

/*!

    \var HbProgressDialog::ProgressDialog

    This enum describes the type value as ProgressDialog.

 */

/*!

    \var HbProgressDialog::WaitDialog

    TThis enum describes the type value as WaitDialog.

 */

/*!

    @beta

    Constructs a new HbProgressDialog with \a type and \a parent.

    \param type ProgressDialogType.

    \param parent  progress dialog's parent.

    Default settings:

    \li The text is empty.

    \li The icon is null.

    \li The cancel button text is (translated) "Cancel".

*/

HbProgressDialog::HbProgressDialog(ProgressDialogType type, QGraphicsItem *parent) :

    HbDialog(*new HbProgressDialogPrivate, parent)

{

    Q_D(HbProgressDialog);

    d->init(type);

    setAutoClose(true);

}

/*!

    @beta

    Constructs a new HbProgressDialog with \a parent.

    Default settings:

    \li The text is empty.

    \li The icon is null.

    \li The cancel button text is (translated) "Cancel".

    \li minimum is 0;

    \li maximum is 100

    The parent argument is dialog's parent widget.

*/

HbProgressDialog::HbProgressDialog(QGraphicsItem *parent) :

    HbDialog(*new HbProgressDialogPrivate, parent)

{

    Q_D(HbProgressDialog);

    d->init(ProgressDialog);

    setAutoClose(true);

}

/*!

    Destructs the progressDialog.

*/

HbProgressDialog::~HbProgressDialog()

{

}

/*!

    @beta

    Returns the maximum value of the progressbar within the progressdialog.

    The default value is \c 100.

    \sa setMaximum()

*/

int HbProgressDialog::maximum() const

{

    Q_D(const HbProgressDialog);

    return d->mContentWidget->mProgressBar->maximum();

}

/*!

    @beta

    Sets the maximum value of the progressbar within the progressdialog.

    \sa maximum()

*/

void HbProgressDialog::setMaximum(int max)

{

    Q_D(HbProgressDialog);

    d->mContentWidget->mProgressBar->setMaximum(max);

}

/*!

    @beta

    Returns the minimum value of the progressbar within the progressdialog.

    The default value is \c 0.