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# addressview.cpp Example File
activeqt/qutlook/addressview.cpp

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        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
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    **   information about Qt Commercial License Agreements.
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        #include <QtGui>

        #include "addressview.h"
        #include "msoutl.h"

        class AddressBookModel : public QAbstractListModel
        {
        public:
            AddressBookModel(AddressView *parent);
            ~AddressBookModel();

            int rowCount(const QModelIndex &parent = QModelIndex()) const;
            int columnCount(const QModelIndex &parent) const;
            QVariant headerData(int section, Qt::Orientation orientation, int role) const;
            QVariant data(const QModelIndex &index, int role) const;

            void changeItem(const QModelIndex &index, const QString &firstName, const QString &lastName, const QString &address, const QString &email);
            void addItem(const QString &firstName, const QString &lastName, const QString &address, const QString &email);
            void update();

        private:
            Outlook::Application outlook;
            Outlook::Items * contactItems;

            mutable QHash<QModelIndex, QStringList> cache;
        };

        AddressBookModel::AddressBookModel(AddressView *parent)
        : QAbstractListModel(parent)
        {
            if (!outlook.isNull()) {
                Outlook::NameSpace session(outlook.Session());
                session.Logon();
                Outlook::MAPIFolder *folder = session.GetDefaultFolder(Outlook::olFolderContacts);
                contactItems = new Outlook::Items(folder->Items());
                connect(contactItems, SIGNAL(ItemAdd(IDispatch*)), parent, SLOT(updateOutlook()));
                connect(contactItems, SIGNAL(ItemChange(IDispatch*)), parent, SLOT(updateOutlook()));
                connect(contactItems, SIGNAL(ItemRemove()), parent, SLOT(updateOutlook()));

                delete folder;
            }
        }

        AddressBookModel::~AddressBookModel()
        {
            delete contactItems;

            if (!outlook.isNull())
                Outlook::NameSpace(outlook.Session()).Logoff();
        }

        int AddressBookModel::rowCount(const QModelIndex &) const
        {
            return contactItems ? contactItems->Count() : 0;
        }

        int AddressBookModel::columnCount(const QModelIndex &parent) const
        {
            return 4;
        }

        QVariant AddressBookModel::headerData(int section, Qt::Orientation orientation, int role) const
        {
            if (role != Qt::DisplayRole)
                return QVariant();

            switch (section) {
            case 0:
                return tr("First Name");
            case 1:
                return tr("Last Name");
            case 2:
                return tr("Address");
            case 3:
                return tr("Email");
            default:
                break;
            }

            return QVariant();
        }

        QVariant AddressBookModel::data(const QModelIndex &index, int role) const
        {
            if (!index.isValid() || role != Qt::DisplayRole)
                return QVariant();

            QStringList data;
            if (cache.contains(index)) {
                data = cache.value(index);
            } else {
                Outlook::ContactItem contact(contactItems->Item(index.row() + 1));
                data << contact.FirstName() << contact.LastName() << contact.HomeAddress() << contact.Email1Address();
                cache.insert(index, data);
            }

            if (index.column() < data.count())
                return data.at(index.column());

            return QVariant();
        }

        void AddressBookModel::changeItem(const QModelIndex &index, const QString &firstName, const QString &lastName, const QString &address, const QString &email)
        {
            Outlook::ContactItem item(contactItems->Item(index.row() + 1));

            item.SetFirstName(firstName);
            item.SetLastName(lastName);
            item.SetHomeAddress(address);
            item.SetEmail1Address(email);

            item.Save();

            cache.take(index);
        }

        void AddressBookModel::addItem(const QString &firstName, const QString &lastName, const QString &address, const QString &email)
        {
            Outlook::ContactItem item(outlook.CreateItem(Outlook::olContactItem));
            if (!item.isNull()) {
                item.SetFirstName(firstName);
                item.SetLastName(lastName);
                item.SetHomeAddress(address);
                item.SetEmail1Address(email);

                item.Save();
            }
        }

        void AddressBookModel::update()
        {
            cache.clear();

            emit reset();
        }

        AddressView::AddressView(QWidget *parent)
        : QWidget(parent)
        {
            QGridLayout *mainGrid = new QGridLayout(this);

            QLabel *liFirstName = new QLabel("First &Name", this);
            liFirstName->resize(liFirstName->sizeHint());
            mainGrid->addWidget(liFirstName, 0, 0);

            QLabel *liLastName = new QLabel("&Last Name", this);
            liLastName->resize(liLastName->sizeHint());
            mainGrid->addWidget(liLastName, 0, 1);

            QLabel *liAddress = new QLabel("Add&ress", this);
            liAddress->resize(liAddress->sizeHint());
            mainGrid->addWidget(liAddress, 0, 2);

            QLabel *liEMail = new QLabel("&E-Mail", this);
            liEMail->resize(liEMail->sizeHint());
            mainGrid->addWidget(liEMail, 0, 3);

            add = new QPushButton("A&dd", this);
            add->resize(add->sizeHint());
            mainGrid->addWidget(add, 0, 4);
            connect(add, SIGNAL(clicked()), this, SLOT(addEntry()));

            iFirstName = new QLineEdit(this);
            iFirstName->resize(iFirstName->sizeHint());
            mainGrid->addWidget(iFirstName, 1, 0);
            liFirstName->setBuddy(iFirstName);

            iLastName = new QLineEdit(this);
            iLastName->resize(iLastName->sizeHint());
            mainGrid->addWidget(iLastName, 1, 1);
            liLastName->setBuddy(iLastName);

            iAddress = new QLineEdit(this);
            iAddress->resize(iAddress->sizeHint());
            mainGrid->addWidget(iAddress, 1, 2);
            liAddress->setBuddy(iAddress);

            iEMail = new QLineEdit(this);
            iEMail->resize(iEMail->sizeHint());
            mainGrid->addWidget(iEMail, 1, 3);
            liEMail->setBuddy(iEMail);

            change = new QPushButton("&Change", this);
            change->resize(change->sizeHint());
            mainGrid->addWidget(change, 1, 4);
            connect(change, SIGNAL(clicked()), this, SLOT(changeEntry()));

            treeView = new QTreeView(this);
            treeView->setSelectionMode(QTreeView::SingleSelection);
            treeView->setRootIsDecorated(false);

            model = new AddressBookModel(this);
            treeView->setModel(model);

            connect(treeView->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex)), this, SLOT(itemSelected(QModelIndex)));

            mainGrid->addWidget(treeView, 2, 0, 1, 5);
        }

        void AddressView::updateOutlook()
        {
            model->update();
        }

        void AddressView::addEntry()
        {
            if (!iFirstName->text().isEmpty() || !iLastName->text().isEmpty() ||
                 !iAddress->text().isEmpty() || !iEMail->text().isEmpty()) {
                model->addItem(iFirstName->text(), iFirstName->text(), iAddress->text(), iEMail->text());
            }

            iFirstName->setText("");
            iLastName->setText("");
            iAddress->setText("");
            iEMail->setText("");
        }

        void AddressView::changeEntry()
        {
            QModelIndex current = treeView->currentIndex();

            if (current.isValid())
                model->changeItem(current, iFirstName->text(), iLastName->text(), iAddress->text(), iEMail->text());
        }

        void AddressView::itemSelected(const QModelIndex &index)
        {
            if (!index.isValid())
                return;

            QAbstractItemModel *model = treeView->model();
            iFirstName->setText(model->data(model->index(index.row(), 0)).toString());
            iLastName->setText(model->data(model->index(index.row(), 1)).toString());
            iAddress->setText(model->data(model->index(index.row(), 2)).toString());
            iEMail->setText(model->data(model->index(index.row(), 3)).toString());
        }