/*

* 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>

#include <QScopedPointer>

#include <HbPushButton>

#include <HbSelectionDialog>

#include <HbLabel>

#include <HbExtendedLocale>

#include <HbAction>

#include "nmipssettingsmultiselectionitem.h"

// CONSTANTS

const QChar NmIpsSettingsMultiSelectionItemSpace(' ');

/*!

    \class NmIpsSettingsMultiSelectionItem

    \brief The class implements a custom HbDataFormViewItem for showing multi selection dialog.

*/

// ======== MEMBER FUNCTIONS ========

/*!

    Constructor of NmIpsSettingsMultiSelectionItem.

*/

NmIpsSettingsMultiSelectionItem::NmIpsSettingsMultiSelectionItem(

    QGraphicsItem *parent, Qt::WindowFlags wFlags)

 : HbWidget(parent, wFlags),

   mButton(0),

   mSelectionDialog(0)

{

    // Create widget layout.

    QScopedPointer<QGraphicsLinearLayout> layout(new QGraphicsLinearLayout(Qt::Vertical, this));

    this->setLayout(layout.data());

    // Create button.

    mButton = new HbPushButton();

    layout->addItem(mButton);

    connect(mButton, SIGNAL(clicked()), this, SLOT(launchSelectionDialog()));

    (void)layout.take();

}

/*!

    Destructor of NmIpsSettingsMultiSelectionItem.

*/

NmIpsSettingsMultiSelectionItem::~NmIpsSettingsMultiSelectionItem()

{

    delete mSelectionDialog;

}

/*!

    Returns shown text.

    \return Shown text.

*/

QString NmIpsSettingsMultiSelectionItem::text() const

{

    return mButton->text();

}

/*!

    Sets shown text.

    \param text Shown text.

*/

void NmIpsSettingsMultiSelectionItem::setText(QString text)

{

    mButton->setText(text);

}

/*!

    Returns items which are shown in dialog.

    \return items which are shown in dialog.

*/

QStringList NmIpsSettingsMultiSelectionItem::stringItems() const

{

    return mItems;

}

/*!

    Sets items which are shown in dialog.

    \param items Items which are shown in dialog.

*/

void NmIpsSettingsMultiSelectionItem::setStringItems(QStringList items)

{

    mItems = items;

    generateButtonText();

}

/*!

    Returns selected items.

    \return selected items.

*/

QList<QVariant> NmIpsSettingsMultiSelectionItem::selectedItems()const

{

    return mSelectedItems;

}

/*!

    Sets selected items.

    \param selectedItems Indexes of items which will be seleceted when dialog is shown.

*/

void NmIpsSettingsMultiSelectionItem::setSelectedItems(QList<QVariant> selectedItems)

{

    // Store selected items and generate button text.

    mSelectedItems = selectedItems;

    generateButtonText();

}

/*!

    Returns heading text.

    \return heading text.

*/

QString NmIpsSettingsMultiSelectionItem::heading() const

{

    return mHeading;

}

/*!

    Sets heading text.

    \param heading Shown heading text in dialog.

*/

void NmIpsSettingsMultiSelectionItem::setHeading(QString heading)

{

    mHeading = heading;

}

/*!

    Launches the Selection dialog.

*/

void NmIpsSettingsMultiSelectionItem::launchSelectionDialog()

{

    if (mSelectionDialog) {

        delete mSelectionDialog;

        mSelectionDialog = 0;

    }

    // Create the dialog.

    mSelectionDialog = new HbSelectionDialog();

    mSelectionDialog->setSelectionMode(HbAbstractItemView::MultiSelection);

    mSelectionDialog->setStringItems(mItems, mItems.count() + 1);

    mSelectionDialog->setSelectedItems(mSelectedItems);

    // Set the heading for the dialog.

    HbLabel *headingLabel = new HbLabel(mHeading, mSelectionDialog);

    mSelectionDialog->setHeadingWidget(headingLabel);

    mSelectionDialog->open(this, SLOT(selectionDialogClosed(HbAction *)));

}

/*!

    Handles the action from selection dialog.

    \param action Dialog closing action.

*/

void NmIpsSettingsMultiSelectionItem::selectionDialogClosed(HbAction *action)

{

    // TODO: Needs to be properly fixed when ever orbit supports

    // e.g. <code>void finished(int result)</code> type of signaling.

    // This is kind of hack but we do not want to compare button text to some string to

    // be certain which button was pressed (NOTE: Buttons are created and placed

    // by HbSelectionDialog).

    if (action == mSelectionDialog->actions().at(0)) {

        // Get selected items.

        mSelectedItems = mSelectionDialog->selectedItems();

        // Generate button text from selected items.

        generateButtonText();

        QMap<QString, QVariant> properties;

        properties.insert("selectedItems", mSelectedItems);

        emit propertyChanged(properties);

        // Emit the signal.

        emit editingFinished();

    }

}

/*!

    Generates shown text from selected items.

*/

void NmIpsSettingsMultiSelectionItem::generateButtonText()

{

    // Generate button text only if both properties are valid.

    const int itemCount(mItems.count());

    if (mItems.count() >= mSelectedItems.count()) {

        // Construct separator for button text.

        QChar groupSeparator(HbExtendedLocale::system().groupSeparator());

        QString separator(groupSeparator);

        if (!groupSeparator.isSpace()) {

            separator.append(NmIpsSettingsMultiSelectionItemSpace);

        }

        QString buttonText;

        QListIterator<QVariant> itemIterator(mSelectedItems);

        while (itemIterator.hasNext()) {

            QVariant item(itemIterator.next());

            bool conversionOk(false);

            const int selectedIndex(item.toInt(&conversionOk));

            if (conversionOk && (selectedIndex >= 0) && (selectedIndex < itemCount)) {

                // Generate button text.

                buttonText.append(mItems.at(selectedIndex));

                // Add separator if not last item.

                if (itemIterator.hasNext()) {

                    buttonText.append(separator);

                }

            }

        }

        // If empty text is set to the button, next time when some "real" text is set to the button

        // the text is drawn from left to the center of button. Text is drawn multiple times to

        // wrong place while it travelling from left side to the center of button.

        // To prevent this feature, one space is set to button instead of real empty string.

        if (buttonText.isEmpty()) {

            buttonText = " ";

        }

        mButton->setText(buttonText);

    }

}