progressbar with value inside function

filipdns

Hello,

I have this code in qml form:

        function rownumberupdate()
        {
            
            for(var i = listViewcount; i > 0; i--)
            {   
                JS.dbimmat(inConversationWith4)
                var j = i-1
                var progress_bar_value = j

                var date_etape_readed1 = listView.model.get(j).date_etape
                var date_etape_readed2 = listView.model.get(i).date_etape
                var hour = parseFloat(listView.model.get(j).temps_bloc_etape)
                var cycle = parseInt(listView.model.get(j).cycle_etape)
                
                if(date_etape_readed1>date_etape_readed2)
                {
                    JS.dbtimeUpdate(
                                parseFloat(listView.model.get(i).heurecellule)+hour,
                                parseInt(listView.model.get(i).cyclecellule)+cycle,
                                parseFloat(listView.model.get(i).heure_SN_moteur_1)+hour,
                                parseFloat(listView.model.get(i).heure_SO_moteur_1)+hour,
                                parseFloat(listView.model.get(i).heure_SH_moteur_1)+hour,
                                parseInt(listView.model.get(i).cycle_SN_moteur_1)+cycle,
                                parseInt(listView.model.get(i).cycle_SO_moteur_1)+cycle,
                                parseInt(listView.model.get(i).cycle_SH_moteur_1)+cycle,
                                parseFloat(listView.model.get(i).heure_SN_moteur_2)+hour,
                                parseFloat(listView.model.get(i).heure_SO_moteur_2)+hour,
                                parseFloat(listView.model.get(i).heure_SH_moteur_2)+hour,
                                parseInt(listView.model.get(i).cycle_SN_moteur_2)+cycle,
                                parseInt(listView.model.get(i).cycle_SO_moteur_2)+cycle,
                                parseInt(listView.model.get(i).cycle_SH_moteur_2)+cycle,
                                parseFloat(listView.model.get(i).heure_SO_helice_1)+hour,
                                parseInt(listView.model.get(i).cycle_SO_helice_1)+cycle,
                                parseFloat(listView.model.get(i).heure_SO_helice_2)+hour,
                                parseInt(listView.model.get(i).cycle_SO_helice_2)+cycle,
                                listView.model.get(j).id
                                )
                    listView.model.clear()
                    JS.dbimmat(inConversationWith4)
                    
                    
                }
                else
                {
                    JS.dbtimeUpdate(
                                parseFloat(listView.model.get(i).heurecellule),
                                parseInt(listView.model.get(i).cyclecellule),
                                parseFloat(listView.model.get(i).heure_SN_moteur_1),
                                parseFloat(listView.model.get(i).heure_SO_moteur_1),
                                parseFloat(listView.model.get(i).heure_SH_moteur_1),
                                parseInt(listView.model.get(i).cycle_SN_moteur_1),
                                parseInt(listView.model.get(i).cycle_SO_moteur_1),
                                parseInt(listView.model.get(i).cycle_SH_moteur_1),
                                parseFloat(listView.model.get(i).heure_SN_moteur_2),
                                parseFloat(listView.model.get(i).heure_SO_moteur_2),
                                parseFloat(listView.model.get(i).heure_SH_moteur_2),
                                parseInt(listView.model.get(i).cycle_SN_moteur_2),
                                parseInt(listView.model.get(i).cycle_SO_moteur_2),
                                parseInt(listView.model.get(i).cycle_SH_moteur_2),
                                parseFloat(listView.model.get(i).heure_SO_helice_1),
                                parseInt(listView.model.get(i).cycle_SO_helice_1),
                                parseFloat(listView.model.get(i).heure_SO_helice_2),
                                parseInt(listView.model.get(i).cycle_SO_helice_2),
                                listView.model.get(i).id
                                )
                    listView.model.clear()
                    JS.dbimmat(inConversationWith4)
                }
                
            }
            
        }

and I try to have progressBar following "j" value

Rectangle{
              ProgressBar{
                                     minimumValue : 0
                                    maximumValue : listViewcount
                                    value : progress_bar_value
                    }
}

but the bar doesn't move... I suppose the problem is because the value is changing inside function, but how make it working?...

ibia

Hello @filipdns. A simple manner of achieving what you want to do is to declare the progress_bar_value outside the function. Declare it as a property, so the property binding will be established automatically.

Or you can also give a changing variable as parameter of the function :

ProgressBar {
    property int aVariable: 0
    value: myFunction(aVariable)
    
    function myFunction(aVariable) {
        var j
        // ...
        return j
    }
}

Now, the progress bar value will update for each changing of aVariable.

filipdns

Hello, I try that but I got the same result than the code below, the progressbar doesn't move until the loop is completed:

Rectangle{
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.verticalCenter: parent.verticalCenter
        ProgressBar{
            id:progressbar
            maximumValue: listViewcount
            minimumValue: 0
            value: 0

        }
    }

    Rectangle {
        id: input
        anchors.top: buttonlist.bottom
        height: Screen.height / 2


        function tableupdate()
        {

            for( var i = listViewcount; i > 0; i--)
            {
                JS.dbimmat(inConversationWith4)
                var j = i-1
                progressbar.value = i
                var date_etape_readed1 = listView.model.get(j).date_etape
                var date_etape_readed2 = listView.model.get(i).date_etape
                var hour = parseFloat(listView.model.get(j).temps_bloc_etape)
                var cycle = parseInt(listView.model.get(j).cycle_etape)
                if(date_etape_readed1>date_etape_readed2)
                {

                    JS.dbtimeUpdate(
                                parseFloat(listView.model.get(i).heurecellule)+hour,
                                parseInt(listView.model.get(i).cyclecellule)+cycle,
                                parseFloat(listView.model.get(i).heure_SN_moteur_1)+hour,
                                parseFloat(listView.model.get(i).heure_SO_moteur_1)+hour,
                                parseFloat(listView.model.get(i).heure_SH_moteur_1)+hour,
                                parseInt(listView.model.get(i).cycle_SN_moteur_1)+cycle,
                                parseInt(listView.model.get(i).cycle_SO_moteur_1)+cycle,
                                parseInt(listView.model.get(i).cycle_SH_moteur_1)+cycle,
                                parseFloat(listView.model.get(i).heure_SN_moteur_2)+hour,
                                parseFloat(listView.model.get(i).heure_SO_moteur_2)+hour,
                                parseFloat(listView.model.get(i).heure_SH_moteur_2)+hour,
                                parseInt(listView.model.get(i).cycle_SN_moteur_2)+cycle,
                                parseInt(listView.model.get(i).cycle_SO_moteur_2)+cycle,
                                parseInt(listView.model.get(i).cycle_SH_moteur_2)+cycle,
                                parseFloat(listView.model.get(i).heure_SO_helice_1)+hour,
                                parseInt(listView.model.get(i).cycle_SO_helice_1)+cycle,
                                parseFloat(listView.model.get(i).heure_SO_helice_2)+hour,
                                parseInt(listView.model.get(i).cycle_SO_helice_2)+cycle,
                                listView.model.get(j).id
                                )

                    listView.model.clear()
                    JS.dbimmat(inConversationWith4)

                }
                else
                {
                    JS.dbtimeUpdate(
                                parseFloat(listView.model.get(i).heurecellule),
                                parseInt(listView.model.get(i).cyclecellule),
                                parseFloat(listView.model.get(i).heure_SN_moteur_1),
                                parseFloat(listView.model.get(i).heure_SO_moteur_1),
                                parseFloat(listView.model.get(i).heure_SH_moteur_1),
                                parseInt(listView.model.get(i).cycle_SN_moteur_1),
                                parseInt(listView.model.get(i).cycle_SO_moteur_1),
                                parseInt(listView.model.get(i).cycle_SH_moteur_1),
                                parseFloat(listView.model.get(i).heure_SN_moteur_2),
                                parseFloat(listView.model.get(i).heure_SO_moteur_2),
                                parseFloat(listView.model.get(i).heure_SH_moteur_2),
                                parseInt(listView.model.get(i).cycle_SN_moteur_2),
                                parseInt(listView.model.get(i).cycle_SO_moteur_2),
                                parseInt(listView.model.get(i).cycle_SH_moteur_2),
                                parseFloat(listView.model.get(i).heure_SO_helice_1),
                                parseInt(listView.model.get(i).cycle_SO_helice_1),
                                parseFloat(listView.model.get(i).heure_SO_helice_2),
                                parseInt(listView.model.get(i).cycle_SO_helice_2),
                                listView.model.get(i).id
                                )
                    listView.model.clear()
                    JS.dbimmat(inConversationWith4)
                }
            }
        }