Editing ListView's contentY inside it's delegate-CodePudding

I am trying to change the contentY of customerList inside the checkB.onClicked function. However I get the "ReferenceError: customerList is not defined" error on the customerList.contentY=oldY; line and that line only.

customerList is found in every other line inside that function and they work fine. However, I cannot edit the contentY.

The reason why I am trying to edit the contentY is that when I do customerList.model.select(); the customerList gets updated and gets positioned at the start but I do not want that. How can I fix this?

            ListView{
                    id:customerList
                    Layout.preferredHeight: 452
                    Layout.preferredWidth: parent.width
                    Layout.fillHeight: true
                    clip: true
                    spacing:0

                    model: myListModel
                    delegate: CustomerListDelegate{
                        id:listDelegate
                        checkB.checked: model.checked==="true" ? true : false
                        isCheckAvailable: true
                        width: customerList.width
                        height: 64
                        customerProfileImageSource: imageSource
                        customerName: name
                        customerDate: date
                        customerTotalPd: totalPd
                        customerPanto: panto
                        customerVertex: vertex
                        customerLensType: lensType
                        itemIndex: index

                        checkB.onClicked: {
                            var oldY=customerList.contentY;
                            if(checkB.checked==true)
                                myListModel.checkCustomer(index);
                            else
                                myListModel.uncheckCustomer(index);
                            customerList.model.select();
                            customerList.contentY=oldY;
                        }

                    }
                }

CodePudding user response：

there may be an issue with accessing the listview by it's id within it's delegate. try to instead use ListView.view.model/contentY instead of customerList.model/contentY

Read about: Attached properties

CodePudding user response：

Have you tried it without the customerList.model.select(); line? Not sure, what the select() should do here. ListModel does not have a select() method.

I have tried it without this line in a basic ListView and the setting of the contentY value works.