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

**

** 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 "hbinputmethodselectionlist.h"

#include <QGraphicsLinearLayout>

#include <hbmainwindow.h>

#include <hblistwidget.h>

#include <hblistwidgetitem.h>

#include <hbabstractviewitem.h>

#include <hbinputmethod.h>

#include <hbinputsettingproxy.h>

#include <hbinputregioncollector_p.h>

#include "hbdialog_p.h"

/// @cond

class HbInputMethodSelectionListPrivate : public HbDialogPrivate

{

    Q_DECLARE_PUBLIC(HbInputMethodSelectionList)

public:

    HbInputMethodSelectionListPrivate();

    void createSelectionList();

public:

    HbListWidget *mList;

    QList<int> mMethodIndices;

};

HbInputMethodSelectionListPrivate::HbInputMethodSelectionListPrivate()

 : mList(0)

{

}

void HbInputMethodSelectionListPrivate::createSelectionList()

{

    Q_Q(HbInputMethodSelectionList);

    mList = new HbListWidget();

    mList->setSelectionMode(HbAbstractItemView::SingleSelection);

    mList->setItemRecycling(false);

    HbInputSettingProxy *proxy = HbInputSettingProxy::instance();

    QList<HbInputMethodDescriptor> methodList = HbInputMethod::listCustomInputMethods(q->mainWindow()->orientation(), proxy->globalInputLanguage());

    methodList.insert(0, HbInputMethod::defaultInputMethod(q->mainWindow()->orientation()));

    int selectedIndex = -1;

    int index = -1;

    for (int i = 0; i < methodList.count(); ++i) {

        // If descriptor contains multiple display names, it supports multiple input methods

        // which should be added one by one to the list

        QStringList displayNames = methodList.at(i).displayNames();

        if (!displayNames.isEmpty()) {

            QList<HbIcon> icons = methodList.at(i).icons();

            for (int j = 0; j < displayNames.count(); ++j) {

                HbListWidgetItem* item = new HbListWidgetItem();

                QString displayName = displayNames.at(j);

                item->setText(displayName);

                if (j < icons.count()) {

                    item->setIcon(icons.at(j));

                } else {

                    item->setIcon(methodList.at(i).icon());

                }

                mList->addItem(item);

                mMethodIndices.append(i);

                ++index;

                if (descriptor.pluginNameAndPath() == methodList.at(i).pluginNameAndPath() &&

                    QString::fromUtf8(customData) == displayName) {

                  selectedIndex = index;

               }

            }

        } else {

            // Descriptor contains information about one input method

            HbListWidgetItem* item = new HbListWidgetItem();

            QString displayName = methodList.at(i).displayName();

            item->setText(displayName);

            item->setIcon(methodList.at(i).icon());

            mList->addItem(item);

            mMethodIndices.append(i);

            ++index;

            if (descriptor.pluginNameAndPath() == methodList.at(i).pluginNameAndPath() &&

                descriptor.displayName() == displayName ) {

                selectedIndex = index;

            }

        }

    }

    // Default input method doesn't have valid plugin name, so set the index directly

    if (descriptor.isDefault() || descriptor.pluginNameAndPath().isEmpty()) {

        selectedIndex = 0;

    }

    HbAbstractViewItem *viewItem = mList->viewItem(selectedIndex);

    if (viewItem) {

        mList->setCurrentIndex(viewItem->modelIndex(), QItemSelectionModel::Select);

    }

}

/// @endcond

/*!

Constructs input method selection list

*/

HbInputMethodSelectionList::HbInputMethodSelectionList(QGraphicsWidget* parent)

 : HbDialog(*new HbInputMethodSelectionListPrivate(), parent)

{

    Q_D(HbInputMethodSelectionList);

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

    HbStyle style;

    qreal listWidth(300);

    style.parameter(QString("expr(var(hb-param-screen-short-edge)-(2*var(hb-param-margin-gene-screen)))"), listWidth);

    qreal margin(5);

    style.parameter(QString("hb-param-margin-gene-popup"), margin);

    QGraphicsLinearLayout *layout = new QGraphicsLinearLayout();

    layout->setContentsMargins(margin, margin, margin, margin);

    // set default values for popup

    setTimeout(HbDialog::NoTimeout);

    setBackgroundFaded(false);

    setDismissPolicy(TapOutside);

    setPreferredWidth(listWidth);

    setModal(true);

    // Make sure input method selection list never steals focus.

    setFlag(QGraphicsItem::ItemIsPanel, true);

    setActive(false);

    d->createSelectionList();

    layout->addItem(d->mList);

    QGraphicsWidget *content = new QGraphicsWidget(this);

    content->setLayout(layout);

    setContentWidget(content);

    connect(d->mList, SIGNAL(activated(HbListWidgetItem*)), this, SLOT(activateSelectedMethod(HbListWidgetItem*)));

    connect(d->mList, SIGNAL(longPressed(HbListWidgetItem*, const QPointF&)), this, SLOT(activateSelectedMethod(HbListWidgetItem*)));

}

/*!

Destructs the object.

*/

HbInputMethodSelectionList::~HbInputMethodSelectionList()

{

}

/*!

Called when input method is selected from the list. Signal inputMethodSelected

is emitted with selected input method as parameter.

*/

void HbInputMethodSelectionList::activateSelectedMethod(HbListWidgetItem *item)

{

    Q_D(HbInputMethodSelectionList);

    int index = d->mMethodIndices.at(d->mList->row(item));

    QByteArray customData;

    HbInputMethodDescriptor selectedMethod;

    if (index == 0) {

        selectedMethod = HbInputMethod::defaultInputMethod(mainWindow()->orientation());

        if (!selectedMethod.displayNames().isEmpty()) {

            customData = selectedMethod.displayNames().at(d->mList->row(item)).toUtf8();

        }

    } else {

        HbInputSettingProxy *proxy = HbInputSettingProxy::instance();

        QList<HbInputMethodDescriptor> customList = HbInputMethod::listCustomInputMethods(mainWindow()->orientation(), proxy->globalInputLanguage());

        selectedMethod = customList.at(index - 1);

        int firstItemIndex = d->mMethodIndices.indexOf(index);

        if (!selectedMethod.displayNames().isEmpty()) {

            customData = selectedMethod.displayNames().at(d->mList->row(item) - firstItemIndex).toUtf8();

        }

    }

    close();

    emit inputMethodSelected(selectedMethod, customData);

}

// End of file