CheckBox in TableView, Get the checked status

[levinie]

OK, I'm a new guy to Qt & qml, and qml really cool.
Now i want add checkbox in special items of the table.
But how can i get the property checked?

Here is my Code:

@
Rectangle{
Component {
id: checkbox_rwd
Item {
id: item_ok
property string chck: "N"
CheckBox {
id: checkbox_ok
MouseArea {
id: mousearea_ok
anchors.fill: parent
onClicked: {
if (checkbox_ok.checked){
checkbox_ok.checked = false;
}
else{
checkbox_ok.checked = true;
}
}
}
}
}
}

    ListModel {
        id: model_node
        //            ListElement{ ip: "255.255.255.255" ; path: "/root/filetest"; w: ""; r: ""; rw: ""; wd: ""; }
        //            ListElement{ ip: "255.255.255.255" ; path: "/root/filetest"; w: ""; r: ""; rw: ""; wd: ""; }
    }

    TableView {
        id: table_node
        x: 29
        y: 93
        width: 500
        height: 150
        TableViewColumn{ role: "select"; title:""; width: 15; delegate: checkbox_rwd; }
        TableViewColumn{ role: "ip"  ; title: "IP" ; width: 120;  }
        TableViewColumn{ role: "path" ; title: "path" ; width: 150;  }
        TableViewColumn{ role: "w"  ; title: "write" ; width: 30; delegate: checkbox_rwd }
        TableViewColumn{ role: "r"  ; title: "read" ; width: 30; delegate: checkbox_rwd }
        TableViewColumn{ role: "rw"  ; title: "rw" ; width: 40; delegate: checkbox_rwd }
        TableViewColumn{ role: "wd"  ; title: "rd" ; width: 40; delegate: checkbox_rwd }
        TableViewColumn{ role: "enabled"  ; title: "enabled" ; width: 40; delegate: checkbox_rwd }
        model: model_node
    }

}

function add_node(){
    //get input
    var ip = textinput_ip.text;
    var path = textinput_path.text;
    //add
    if (ip && path){
        var new_item = {"ip":ip, "path":path, "w": "N", "r": "N", "rw": "N", "wd": "N", "enabled":"N" }; //N means NO
        model_node.append(new_item);
    }
}

function get_checked(){
    var row_count = model_node.count;
    var info = {};
    for (var i=0; i<row_count; i++){
        var tmp_dict = {};
        var item = model_node.get(i)
        var ip = item.ip;
        var path = item.path;
        tmp_dict.ip = ip;
        tmp_dict.dir = dir;
        info[i] = tmp_dict;
    }
    info = JSON.stringify(info);
    return info;
}

@

OK, I get the ip and path with ListModel.get(index), not w, r, rw, wd (these items contain checkbox, i need the checked value).
how can i get these checked status?