groupeditdialog.cpp Example File
samplephonebook/groupeditdialog.cpp

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    #include "groupeditdialog.h"

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

    GroupEditDialog::GroupEditDialog(QWidget *parent, QContactManager *contactManager)
            : QDialog(parent), cm(contactManager)
    {
        Q_ASSERT(contactManager);
        setWindowTitle(tr("Groups Edit"));

        QFormLayout *layout = new QFormLayout;

        groupNameEdit = new QLineEdit(this);
        listWidget = new QListWidget(this);
        addButton = new QPushButton(tr("Add"), this);
        saveButton = new QPushButton(tr("Save"), this);
        deleteButton = new QPushButton(tr("Delete"), this);
        doneButton = new QPushButton(tr("Done"), this);

        layout->addRow(tr("Group Name"), groupNameEdit);
        layout->addRow(listWidget);

        QHBoxLayout *row1Layout = new QHBoxLayout;
        row1Layout->addWidget(addButton);
        row1Layout->addWidget(saveButton);
        row1Layout->addWidget(deleteButton);
        layout->addRow(row1Layout);

        QHBoxLayout *row2Layout = new QHBoxLayout;
        row2Layout->addStretch(1);
        row2Layout->addWidget(doneButton);
        layout->addRow(row2Layout);

        setLayout(layout);

        repopulateGroupList();

        connect(addButton, SIGNAL(clicked()),
                this, SLOT(addButtonClicked()));
        connect(deleteButton, SIGNAL(clicked()),
                this, SLOT(deleteButtonClicked()));
        connect(saveButton, SIGNAL(clicked()),
                this, SLOT(saveButtonClicked()));
        connect(doneButton, SIGNAL(clicked()),
                this, SLOT(doneButtonClicked()));
        connect(listWidget, SIGNAL(itemActivated(QListWidgetItem *)),
                this, SLOT(groupItemActivated(QListWidgetItem *)));
        connect(listWidget, SIGNAL(currentItemChanged (QListWidgetItem *, QListWidgetItem *)),
                this, SLOT(groupItemChanged (QListWidgetItem *, QListWidgetItem *)));
    }

    void GroupEditDialog::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);
            // store the group ID as Qt::UserRole + 1
            item->setData(Qt::UserRole + 1, grpList[index]);
        }

    }

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

    void GroupEditDialog::addButtonClicked()
    {
        if (!groupNameEdit->text().isEmpty()){
            QContact grp;
            grp.setType(QContactType::TypeGroup);
            bool result;
            QContactName groupName;
            groupName.setCustomLabel(groupNameEdit->text());
            grp.saveDetail(&groupName);
            result = cm->saveContact(&grp);

            if (!result){
                QMessageBox::information(this, tr("Group Add"),
                    tr("Failed to add Group '%1'.").arg(grp.displayLabel()));
            }else{
                repopulateGroupList();
                // select the added group name
                for (int index = 0; index < listWidget->count();index++){
                    if (listWidget->item(index)->data(Qt::UserRole + 1).toUInt() == grp.id().localId()){
                        listWidget->setCurrentItem(listWidget->item(index));
                        break;
                    }
                }
            }

        }else{
            QMessageBox::information(this, tr("Empty Field"),
                    tr("Please enter a name."));
            groupNameEdit->setFocus();
        }
    }

    void GroupEditDialog::saveButtonClicked()
    {
        if (listWidget->currentItem()){
            QContactLocalId grpID = listWidget->currentItem()->data(Qt::UserRole + 1).toUInt();
            QContact grp = cm->contact(grpID);
            bool result = false;
            if (!grp.isEmpty()){
                QContactName groupName;
                groupName.setCustomLabel(groupNameEdit->text());
                grp.saveDetail(&groupName);
                result = cm->saveContact(&grp);
            }
            if (!result){
                QMessageBox::information(this, tr("Save Group"),
                        tr("Failed to save Group '%1'.").arg(listWidget->currentItem()->text()));
            }else{
                repopulateGroupList();
                // select the group name again
                for (int index = 0; index < listWidget->count();index++){
                    if (listWidget->item(index)->data(Qt::UserRole + 1).toUInt() == grp.id().localId()){
                        listWidget->setCurrentItem(listWidget->item(index));
                        break;
                    }
                }
            }
        }
    }

    void GroupEditDialog::deleteButtonClicked()
    {
        if (listWidget->currentItem()){
            int lastCurrentRow = listWidget->currentRow();
            QContactLocalId grpID = listWidget->currentItem()->data(Qt::UserRole + 1).toUInt();
            if (!cm->removeContact(grpID)){
                QMessageBox::information(this, tr("Remove Group"),
                    tr("Failed to removed Group '%1'.").arg(listWidget->currentItem()->text()));
            }else{
                repopulateGroupList();
                if (lastCurrentRow < listWidget->count()){
                    listWidget->setCurrentRow(lastCurrentRow);
                }else {
                    if (listWidget->count())
                        listWidget->setCurrentRow(listWidget->count() - 1);
                }
            }
        }
    }

    void GroupEditDialog::doneButtonClicked()
    {
        accept();
    }

    void GroupEditDialog::groupItemActivated(QListWidgetItem * item)
    {
        if (item)
            groupNameEdit->setText(listWidget->currentItem()->text());
        else
            groupNameEdit->clear();
    }

    void GroupEditDialog::groupItemChanged ( QListWidgetItem * current, QListWidgetItem * /*previous*/ )
    {
        groupItemActivated(current);
    }