Qt + QML + ListView + Refresh ListView

[kesrut]

Hello,

I'm writing tiny app. Which has QML ListView and after I adding new element (on different page) want see changes on ListView.

I have QAbstractListModel named ServerListModel with method which inserts new value:

void ServerListModel::insertValue(int k, Host &host)
 {
     beginInsertRows(QModelIndex(), k, k);
     servers.append(host);
     endInsertRows();
     emit dataChanged();
     reset();
 }

Insert method is called from QML which calls remove method (of QAbstractListModel subclass). getModel() methods passes model to QML ListView.

void ServerModel::insert(QString title, QString hostname, QString username, QString password, qint32 port )
{
    Host host = Host(title, hostname, username, port) ;
    servers.append(host);
    int val = servers.size() -1 ;
    model->insertValue(val, host);
    save() ;
}

QObject * ServerModel::getModel()
{
    return qobject_cast<QObject*>(model) ;
}

In main.cpp I have qmlRegisterType:

qmlRegisterType<ServerModel>("lt.ServerModel", 1, 0, "ServerModel");

The problem is that ListView not changing. After executing beginInsertRows or beginDeleteRows I see what rowCount (of QAbstractListModel) is triggered. But getModel() method not. So any suggestions how to fix this problem ?

[vladestCh]

try to emit layoutCanged() signal

[kesrut]

How to correctly add signal ?

Added to my QAbstractListModel subclass ServerListModel this code:

Q_SIGNALS:
    void countChanged(int count);
    void rowsInserted() ;
    void dataChanged() ;
    void layoutChanged();

And just emitting them... emit layoutChanged();

I'm did some debugging:

After I insert new element with Insert method to servers structure (data structure which holds values) it changes (row count makes bigger). I added to QML onStatusChanged callback:

onStatusChanged:
    {
        list.model = server.getModel()
    }

getModel() gets called, but row count not changing.

QObject * ServerModel::getModel()
{
    qDebug("getModel()");
    int i=0;
    int count = model->rowCount() ;
    qDebug("Model count: " + QString::number(count).toAscii());
    return qobject_cast<QObject*>(model) ;
}

Any new suggestions? So simple think and I stuck. Thanks.

[kesrut]

I found the problem. I changed:

qmlRegisterType<ServerModel>("lt.ServerModel", 1, 0, "ServerModel");

to

ServerListModel *model = new ServerListModel() ;
QDeclarativeContext *ctxt = viewer.rootContext();
ctxt->setContextProperty("server", model);

And it started to work.