/*

* Copyright (c) 2009 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 <hbdialog.h>

#include <hbscrollbar.h>

#include <hbindexfeedback.h>

#include <hbaction.h>

#include <hblabel.h>

#include <hbaction.h>

#include <hbmainwindow.h>

#include <hblistviewitem.h>

#include <hblistview.h>

#include <hbsearchpanel.h>

#include <hbstaticvkbhost.h>

#include <QGraphicsLinearLayout>

#include <qcontactid.h>

#include <cntlistmodel.h>

#include "cntfetchcontactsview.h"

/*!

Given a contact manager, CntFetchContacts is responsible for 

retrieving a set of contacts, if any were chosen by the user. 

*/

CntFetchContacts::CntFetchContacts(QContactManager *aManager) :

QObject(),

mPopup(NULL),

mCntModel(NULL),

mListView(NULL),

mEmptyListLabel(NULL),

mSelectionMode(HbAbstractItemView::MultiSelection),

mManager(aManager),

mWasCanceled(false),

mLabel(NULL),

mVirtualKeyboard(NULL),

mPrimaryAction(NULL),

mSecondaryAction(NULL),

mIndexFeedback(NULL)

{

    mSearchPanel = new HbSearchPanel();

    mSearchPanel->setVisible(false);

    mSearchPanel->setCancelEnabled(false);

    connect(mSearchPanel, SIGNAL(criteriaChanged(QString)), this, SLOT(setFilter(QString)));

    mLayout = new QGraphicsLinearLayout(Qt::Vertical);

    mContainerWidget = new HbWidget();

}

CntFetchContacts::~CntFetchContacts()

{

    delete mCntModel;

    mCntModel = NULL;

    delete mVirtualKeyboard;

    mVirtualKeyboard = NULL;

    delete mIndexFeedback;

    mIndexFeedback = NULL;

}

/*!

Query to see if the user decided to press Cancel after selecting 

group members. Must be called to see if results are valid.

*/

bool CntFetchContacts::wasCanceled() const

{

    return mWasCanceled;

}

void CntFetchContacts::setDetails(QString aTitle, QString aButtonText)

{

    mButtonText = aButtonText;

    if (!mLabel) {

        mLabel = new HbLabel(aTitle);

    }

}

/*!

Brings up a list of contacts, awaiting user response. This function is asynchronous.

When a response is given, a clicked signal will be sent.

*/

void CntFetchContacts::displayContacts(DisplayType aType, HbAbstractItemView::SelectionMode aMode, QSet<QContactLocalId> aContacts)

{

    switch (aType) {

    case view:

    {

        // TODO Currently only services will need a view 

        break;

    }

    case popup:

    {

        doInitialize(aMode,aContacts);

        markMembersInView();

        connectSignal();

        showPopup();

        mLayout->addItem(mSearchPanel);

        mContainerWidget->setLayout(mLayout);

        mContainerWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);

        break;

    }

    default:

        break;

    }

}

QSet<QContactLocalId> CntFetchContacts::getSelectedContacts() const

{

   return mCurrentlySelected;

}

void CntFetchContacts::setFilter(const QString &filterString)

{

    QStringList searchList = filterString.split(QRegExp("\\s+"), QString::SkipEmptyParts);

    QContactDetailFilter detailfilter;

    detailfilter.setDetailDefinitionName(QContactDisplayLabel::DefinitionName, QContactDisplayLabel::FieldLabel);

    detailfilter.setMatchFlags(QContactFilter::MatchStartsWith);

    detailfilter.setValue(searchList);

    markMembersInView();

    if (mCntModel->rowCount() == 0) {

        mLayout->removeItem(mListView);

        if (mEmptyListLabel) {

            qreal searchHeight = mSearchPanel->size().height();

            HbLabel* heading = static_cast<HbLabel*>(mPopup->headingWidget());

            qreal heightToSet =  mPopup->size().height() - mVirtualKeyboard->keyboardArea().height() - searchHeight - heading->size().height();

            mEmptyListLabel->setMaximumHeight(heightToSet);

            mEmptyListLabel->setVisible(true);

            mLayout->insertItem(0, mEmptyListLabel);

        }

        mListView->setVisible(false);

        mSearchPanel->setVisible(true);

    }

    else {

        if (mEmptyListLabel) {

            mEmptyListLabel->setVisible(false);

        }

        mLayout->removeItem(mEmptyListLabel);

        mLayout->insertItem(0, mListView);

        mListView->setVisible(true);

    }

}

void CntFetchContacts::handleKeypadOpen()

{

    qreal searchHeight = mSearchPanel->size().height();

    HbLabel* heading = static_cast<HbLabel*>(mPopup->headingWidget());

    qreal heightToSet =  mPopup->size().height() - mVirtualKeyboard->keyboardArea().height() - searchHeight - heading->size().height();

    if (mEmptyListLabel) {

        mEmptyListLabel->setMaximumHeight( heightToSet - mEmptyListLabel->size().height() );

    }

    mListView->setMaximumHeight(heightToSet);

}

void CntFetchContacts::handleKeypadClose()

{

    mListView->setMaximumHeight(mPopup->size().height());

    if (mEmptyListLabel) {

        mEmptyListLabel->setMaximumHeight(mPopup->size().height());

    }

}

void CntFetchContacts::handleUserResponse(HbAction* action)

{

    HbDialog *popup = static_cast<HbDialog*>(sender());

    bool userCanceled = (action == mSecondaryAction); 

    if (popup && userCanceled) {

        mCurrentlySelected.clear();

        mWasCanceled = true;

    }

    else {

        mWasCanceled = false;

    }

    emit clicked();

}

void CntFetchContacts::memberSelectionChanged(const QModelIndex &index)

{

    if (!index.isValid()) return;

    if (mSelectionMode == HbAbstractItemView::SingleSelection) {

        mCurrentlySelected.clear();

    }

    QContactLocalId contactId = mCntModel->contact(index).localId();

    bool isSelected = mListView->selectionModel()->isSelected(index);

    if (isSelected != mCurrentlySelected.contains(contactId)) {

        if (isSelected) {

            mCurrentlySelected.insert(contactId);

        }

        else {

            mCurrentlySelected.remove(contactId);

        }

    }

    // Check for the case where there is a cancel button only. If so, 

    // after selecting any contact, should dismiss the dialog immediately.

    if (mButtonText.isEmpty() && mSelectionMode == HbAbstractItemView::SingleSelection) {

        mPopup->close();

    }

}

void CntFetchContacts::doInitialize(HbAbstractItemView::SelectionMode aMode,

                                                QSet<QContactLocalId> aContacts)

{

    mSelectionMode = aMode;

    mCurrentlySelected = aContacts;

    mSearchPanel->setVisible(true);

    if (!mPopup) {

        mPopup = new HbDialog;

    }

    if (!mListView) {

        mListView = new HbListView(mPopup);

        mListView->setModel(mCntModel);

        mListView->setSelectionMode(mSelectionMode);

        mListView->setFrictionEnabled(true);

        mListView->setScrollingStyle(HbScrollArea::PanWithFollowOn);

        mListView->verticalScrollBar()->setInteractive(true);

        HbListViewItem *prototype = mListView->listItemPrototype();

        prototype->setGraphicsSize(HbListViewItem::Thumbnail);

        prototype->setStretchingStyle(HbListViewItem::StretchLandscape);

        mIndexFeedback = new HbIndexFeedback(mPopup);

        mIndexFeedback->setIndexFeedbackPolicy(HbIndexFeedback::IndexFeedbackSingleCharacter);

        mIndexFeedback->setItemView(mListView);

        // Note that the layout takes ownership of the item(s) it contains.

        if (!mCntModel->rowCount()) {

            mListView->setVisible(false);

            if (!mEmptyListLabel) {

                mEmptyListLabel = new HbTextItem(hbTrId("txt_phob_info_no_matching_contacts"));

                mEmptyListLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);

                mEmptyListLabel->setFontSpec(HbFontSpec(HbFontSpec::Primary));

                mEmptyListLabel->setAlignment(Qt::AlignCenter);

                mLayout->insertItem(0, mEmptyListLabel);

            }

        }

        else {

            mLayout->addItem(mListView);

        }

        mCntModel->showMyCard(false);

    }

}

void CntFetchContacts::connectSignal()

{

    connect(mListView, SIGNAL(activated(const QModelIndex&)),

            this, SLOT(memberSelectionChanged(const QModelIndex&)));

}

void CntFetchContacts::showPopup()

{

    mPopup->setTimeout(HbPopup::NoTimeout);

    mPopup->setDismissPolicy(HbPopup::NoDismiss);

    mPopup->setModal(true);

    mPopup->setContentWidget(mContainerWidget);

    if (!mVirtualKeyboard) {

        mVirtualKeyboard = new HbStaticVkbHost(mPopup);

        connect(mVirtualKeyboard, SIGNAL(keypadOpened()), this, SLOT(handleKeypadOpen()));

        connect(mVirtualKeyboard, SIGNAL(keypadClosed()), this, SLOT(handleKeypadClose()));

    }

    if (!mLabel) {

        mLabel = new HbLabel(hbTrId("txt_phob_title_contacts"));

    }

    mPopup->setHeadingWidget(mLabel);

    if (!mButtonText.isEmpty() && !mPrimaryAction) {

        mPrimaryAction = new HbAction(hbTrId(mButtonText.toAscii()));

        mPopup->addAction(mPrimaryAction);

    }

    if (!mSecondaryAction) {

        mSecondaryAction = new HbAction(hbTrId("txt_common_button_cancel"));

        mPopup->addAction(mSecondaryAction);

    }

    mPopup->open(this, SLOT(handleUserResponse(HbAction*)));

}

void CntFetchContacts::markMembersInView()

{

    // show "no matching contacts" label

    if (mCntModel->rowCount() == 0) {

        if (!mEmptyListLabel) {

            mEmptyListLabel = new HbTextItem(hbTrId("txt_phob_info_no_matching_contacts"));

            mEmptyListLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);

            mEmptyListLabel->setFontSpec(HbFontSpec(HbFontSpec::Primary));

            mEmptyListLabel->setAlignment(Qt::AlignCenter);

            mLayout->insertItem(1, mEmptyListLabel);

        }

    }

    else {

        mLayout->removeItem(mEmptyListLabel);

        delete mEmptyListLabel;

        mEmptyListLabel = 0;

    }

    // Mark group members in the listview

    foreach (QContactLocalId id, mCurrentlySelected) {

        QContact contact = mManager->contact(id);

        QModelIndex contactIndex = mCntModel->indexOfContact(contact);

        mListView->selectionModel()->select(contactIndex, QItemSelectionModel::Select);

    }

}

// End of file