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#include <QtGui>

#include "addresswidget.h"

#include "adddialog.h"

//! [0]

AddressWidget::AddressWidget(QWidget *parent)

    : QTabWidget(parent)

{

    table = new TableModel(this);

    newAddressTab = new NewAddressTab(this);

    connect(newAddressTab, SIGNAL(sendDetails(QString,QString)),

        this, SLOT(addEntry(QString,QString))); 

    addTab(newAddressTab, "Address Book");    

    setupTabs();

}

//! [0]

//! [2]

void AddressWidget::addEntry()

{    

    AddDialog aDialog;

    if (aDialog.exec()) {

        QString name = aDialog.nameText->text();

        QString address = aDialog.addressText->toPlainText();

        addEntry(name, address);

    }

}

//! [2]

//! [3]

void AddressWidget::addEntry(QString name, QString address)

{    

    QList< QPair<QString, QString> >list = table->getList();

    QPair<QString, QString> pair(name, address);

    if (!list.contains(pair)) {

        table->insertRows(0, 1, QModelIndex());

        QModelIndex index = table->index(0, 0, QModelIndex());

        table->setData(index, name, Qt::EditRole);

        index = table->index(0, 1, QModelIndex());

        table->setData(index, address, Qt::EditRole);

        removeTab(indexOf(newAddressTab));

    } else {

        QMessageBox::information(this, tr("Duplicate Name"),

            tr("The name \"%1\" already exists.").arg(name));

    }

}

//! [3]

//! [4a]

void AddressWidget::editEntry()

{

    QTableView *temp = static_cast<QTableView*>(currentWidget());

    QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());

    QItemSelectionModel *selectionModel = temp->selectionModel();

    QModelIndexList indexes = selectionModel->selectedRows();

    QModelIndex index, i;        

    QString name;

    QString address;

    int row = -1;

    foreach (index, indexes) {

        row = proxy->mapToSource(index).row();

        i = table->index(row, 0, QModelIndex());

        QVariant varName = table->data(i, Qt::DisplayRole);

        name = varName.toString();

        i = table->index(row, 1, QModelIndex());

        QVariant varAddr = table->data(i, Qt::DisplayRole);

        address = varAddr.toString();

    }

//! [4a]

//! [4b]    

    AddDialog aDialog;

    aDialog.setWindowTitle(tr("Edit a Contact"));

    aDialog.nameText->setReadOnly(true);

    aDialog.nameText->setText(name);

    aDialog.addressText->setText(address);

    if (aDialog.exec()) {

        QString newAddress = aDialog.addressText->toPlainText();

        if (newAddress != address) {

            i = table->index(row, 1, QModelIndex());

            table->setData(i, newAddress, Qt::EditRole);

        }

    }

}

//! [4b]

//! [5]

void AddressWidget::removeEntry()

{

    QTableView *temp = static_cast<QTableView*>(currentWidget());

    QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());

    QItemSelectionModel *selectionModel = temp->selectionModel();

    QModelIndexList indexes = selectionModel->selectedRows();

    QModelIndex index;

    foreach (index, indexes) {

        int row = proxy->mapToSource(index).row();

        table->removeRows(row, 1, QModelIndex());

    }

    if (table->rowCount(QModelIndex()) == 0) {

        insertTab(0, newAddressTab, "Address Book");

    }

}

//! [5]

//! [1]

void AddressWidget::setupTabs()

{

    QStringList groups;

    groups << "ABC" << "DEF" << "GHI" << "JKL" << "MNO" << "PQR" << "STU" << "VW" << "XYZ";

    for (int i = 0; i < groups.size(); ++i) {

        QString str = groups.at(i);

        proxyModel = new QSortFilterProxyModel(this);

        proxyModel->setSourceModel(table);

        proxyModel->setDynamicSortFilter(true);

        QTableView *tableView = new QTableView;

        tableView->setModel(proxyModel);

        tableView->setSortingEnabled(true);

        tableView->setSelectionBehavior(QAbstractItemView::SelectRows);

        tableView->horizontalHeader()->setStretchLastSection(true);

        tableView->verticalHeader()->hide();

        tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);

        tableView->setSelectionMode(QAbstractItemView::SingleSelection);

        QString newStr = QString("^[%1].*").arg(str);

        proxyModel->setFilterRegExp(QRegExp(newStr, Qt::CaseInsensitive));

        proxyModel->setFilterKeyColumn(0);

        proxyModel->sort(0, Qt::AscendingOrder);

        connect(tableView->selectionModel(),

            SIGNAL(selectionChanged(QItemSelection,QItemSelection)),

            this, SIGNAL(selectionChanged(QItemSelection)));

        addTab(tableView, str);

    }

}

//! [1]

//! [7]

void AddressWidget::readFromFile(QString fileName)

{

    QFile file(fileName);

    if (!file.open(QIODevice::ReadOnly)) {

        QMessageBox::information(this, tr("Unable to open file"),

            file.errorString());

        return;

    }

    QList< QPair<QString, QString> > pairs = table->getList();    

    QDataStream in(&file);

    in >> pairs;

    if (pairs.isEmpty()) {

        QMessageBox::information(this, tr("No contacts in file"),

            tr("The file you are attempting to open contains no contacts."));  

    } else {

        for (int i=0; i<pairs.size(); ++i) {

            QPair<QString, QString> p = pairs.at(i);

            addEntry(p.first, p.second);

        }

    }

}

//! [7]

//! [6]

void AddressWidget::writeToFile(QString fileName)

{

    QFile file(fileName);

    if (!file.open(QIODevice::WriteOnly)) {

        QMessageBox::information(this, tr("Unable to open file"), file.errorString());

        return;

    }

    QDataStream out(&file);

    out << pairs;

}

//! [6]