[Solved] set (access,highlight) ListView currentItem/currentIndex from C++

simonbolek

hi:)
I would like to highlight the currentItem of the ListView from C++ code according to C++ events, in particular a USB controller input (never mind). I have read many forum posts but did not find a suitable solution. Could you help me?

My list is simple for the start:
@
ListView {
focus: true
id: categories
anchors.fill: parent
model: myModel
delegate:
Row {
id: foo
width: foo.ListView.view.width; height: 60
Text {
id: t
text: model.display //I set the model in c++ with setContextProperty
color: foo.ListView.isCurrentItem ? "white" : "black"
font { family: "Helvetica"; pixelSize: 16; bold: true }
anchors {
left: parent.left; leftMargin: 15
verticalCenter: parent.verticalCenter
}
MouseArea{
anchors.fill: parent
}
}

        MouseArea {
            anchors.fill: foo
            onClicked: {
                foo.ListView.view.currentIndex = index
                myModel.doSth(t.text)  //works
            }
        }
    }

    highlight: Rectangle { color: "green" }
    highlightMoveSpeed: 500
}

@

cheers
simon:)

DenisKormalev

You can use Connections QML item to connect to signals from C++ object (that you can set via setContextProperty as you've set model object).

minimoog77

Somethink like:

@Connections {
target: myModel
onChangeCurrentIndex: { ... }
}@

Of course, your model in C++ should have changeCurrentIndex signal.

simonbolek

...I should actually be banned and cast out for such question for not beeing able to look in help accordingly, shouldn't I? ...I still hope i won't be and I am happy that there are people like you patiently answering such questions...

Of course:
@
Connections {
target: myModel
onChangeCurrentIndex: {
console.log("yo")
categories.currentIndex = idx
}
}
@

in c++ h/cpp
@
signals:
void changeCurrentIndex(int idx);

...

emit changeCurrentIndex(1);
@

this does the job.

thakns+cheers
simon:)