groupdetailsdialog.cpp Example File
samplephonebook/groupdetailsdialog.cpp

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    #include "groupdetailsdialog.h"

    #include <QtGui>
    #include "qcontact.h"
    #include "qcontactmanager.h"

    #include "qcontactrelationship.h"
    #include "qcontacttype.h"
    #include "qcontactdetailfilter.h"

    GroupDetailsDialog::GroupDetailsDialog(QWidget *parent, QContactManager *contactManager, const QContact &contact)
            : QDialog(parent), cm(contactManager)
    {
        Q_ASSERT(contactManager);
        setWindowTitle(tr("Group Details"));

        QFormLayout *layout = new QFormLayout;

    qDebug() << "constructed group details dialog for contact:" << contact.displayLabel();
    qDebug() << "   id =" << contact.id().managerUri() << ":" << contact.id().localId();

        localContact = contact;
        contactNameEdit = new QLineEdit(this);
        contactNameEdit->setReadOnly(true);
        contactNameEdit->setText(contact.displayLabel());
        listWidget = new QListWidget(this);
        okButton = new QPushButton(tr("&Ok"), this);
        cancelButton = new QPushButton(tr("&Cancel"), this);

        layout->addRow(tr("Contact Name"), contactNameEdit);
        layout->addRow(listWidget);

        QHBoxLayout *buttonLayout = new QHBoxLayout;
        buttonLayout->addWidget(okButton);
        buttonLayout->addWidget(cancelButton);
        layout->addRow(buttonLayout);

        setLayout(layout);

        repopulateGroupList();

        connect(okButton, SIGNAL(clicked()),
                this, SLOT(okButtonClicked()));
        connect(cancelButton, SIGNAL(clicked()),
                this, SLOT(cancelButtonClicked()));
        connect(listWidget, SIGNAL(itemChanged(QListWidgetItem *)),
                this, SLOT(groupItemChanged(QListWidgetItem *)));
    }

    void GroupDetailsDialog::repopulateGroupList()
    {
        listWidget->clear();

        QContactDetailFilter groupFilter;
        groupFilter.setDetailDefinitionName(QContactType::DefinitionName, QContactType::FieldType);
        groupFilter.setValue(QString(QLatin1String(QContactType::TypeGroup)));
        QList<QContactLocalId> grpList = cm->contacts(groupFilter);
        for (int index=0; index < grpList.count(); index++){
            QContact grp = cm->contact(grpList[index]);
            QListWidgetItem *item = new QListWidgetItem(grp.displayLabel(), listWidget);
            item->setFlags(item->flags() | Qt::ItemIsUserCheckable);
            bool foundInGroup = false;

            QContactId groupId;
            groupId.setManagerUri(cm->managerUri());
            groupId.setLocalId(grpList[index]);
            QList<QContactRelationship> thisGroupsRels = cm->relationships(QContactRelationship::HasMember, groupId, QContactRelationshipFilter::First);
            foreach (const QContactRelationship& currRel, thisGroupsRels) {
                if (currRel.second() == localContact.id()) {
                    foundInGroup = true;
                    break;
                }
            }
            if (foundInGroup)
                item->setCheckState(Qt::Checked);
            else
                item->setCheckState(Qt::Unchecked);
            // store the group ID as Qt::UserRole + 1
            item->setData(Qt::UserRole + 1, grpList[index]);
        }

    }

    QList<QContactLocalId> GroupDetailsDialog::groups()
    {
        QContactId localContactUri = localContact.id();
        QList<QContactRelationship> relationships = cm->relationships(QContactRelationship::HasMember, localContactUri);
        QList<QContactLocalId> ret;
        foreach (const QContactRelationship& currRel, relationships) {
            if (currRel.second() == localContactUri) {
                ret.append(currRel.first().localId());
            }
        }
        return ret;
    }

    void GroupDetailsDialog::groupItemChanged(QListWidgetItem * item)
    {
        QContactLocalId id = item->data(Qt::UserRole + 1).toUInt(); // id of the group.
        QContactId localContactUri = localContact.id();
        QContactId groupId;
        groupId.setManagerUri(cm->managerUri());
        groupId.setLocalId(id);
        QList<QContactRelationship> relationships = cm->relationships(QContactRelationship::HasMember, localContactUri, QContactRelationshipFilter::Second);
        QList<QContactLocalId> currentGroups;
        foreach (const QContactRelationship& currRel, relationships) {
            currentGroups.append(currRel.first().localId());
        }

    qDebug() << "groups that localcontact is part of:";
    foreach (const QContactLocalId& dbgid, currentGroups) qDebug() << dbgid;
        if (item->checkState() == Qt::Checked) {
    qDebug() << "item is now checked!";
    qDebug() << "already =" << currentGroups.contains(id);
            if (!currentGroups.contains(id)) {
    qDebug() << "groupId =" << id;
    qDebug() << "localContactId =" << localContactUri.managerUri() << ":" << localContactUri.localId();
                // add it to the group.
                QContactRelationship newRelationship;
                newRelationship.setFirst(groupId);
                newRelationship.setRelationshipType(QContactRelationship::HasMember);
                newRelationship.setSecond(localContactUri);
                bool success = cm->saveRelationship(&newRelationship);
    qDebug() << "succeed adding?" << success;
            }
        } else {
    qDebug() << "item is now unchecked!";
    qDebug() << "already =" << currentGroups.contains(id);
            if (currentGroups.contains(id)) {
                // remove any membership in that group
                QContactRelationship currRel;
                currRel.setFirst(groupId);
                currRel.setRelationshipType(QContactRelationship::HasMember);
                currRel.setSecond(localContactUri);
                bool success = cm->removeRelationship(currRel);
    qDebug() << "succeed removing?" << success;
            }
        }
    }

    void GroupDetailsDialog::show()
    {
        repopulateGroupList();
    }

    void GroupDetailsDialog::okButtonClicked()
    {
        accept();
    }

    void GroupDetailsDialog::cancelButtonClicked()
    {
        reject();
    }