Additional columns and customs delegate for TableView based on QAbstractTableModel.

[jefdebusser]

I'm using 5.15.2 and Quick Control 2 but I'm willing to use anything really, provided that it looks and performs OK.

I have a class derived from QAbstractTableModel describing the status of a processing job.
The data has a few fixed columns (e.g. id, name, begin, end, ...) and an arbitrary number of user defined columns.
I want:

• to show the status of the job using an icon: the name of this column is known beforehand
• • display a number of text columns, the number is dependent on the model, and the names are not known beforehand
• to add an additional column containing a button to trigger an action

Using QtQuick.Controls 2.15 I can create a TableView and HorizontalHeaderView and display the table without hard coding the column names.

Does anybody

    TableView {
        id: tableView
        anchors.top: parent.top
        anchors.topMargin: horizontalHeader.height + rowSpacing
        anchors.left: parent.left
        model: liveJobOverview                                                                      // this is my model based on QAbstractTableModel, it doesn't contain any other role than DisplayRole
        rightMargin: 100
        bottomMargin: 100
        columnSpacing: 4
        rowSpacing: 4
        syncDirection: Qt.Vertical | Qt.Horizontal
        implicitWidth: parent.width + columnSpacing
        implicitHeight: parent.height + rowSpacing
        clip: true

        delegate: Rectangle {
            implicitWidth: 150
            implicitHeight: 50
            Text {
                anchors.fill: parent
                text: model.display
                horizontalAlignment: Text.AlignHCenter
                verticalAlignment: Text.AlignVCenter
            }
        }
    }

    HorizontalHeaderView {
        id: horizontalHeader
        objectName: "horizontalHeader"
        height: contentHeight
        width: syncView.width
        anchors.top: parent.top
        anchors.left: tableView.left
        syncView: tableView
        clip: true
    }

I have troubles connecting different delegates to different columns because they all use the display role and for example the delegate chooser relies on the role to select the delegate. I also can't figure out how to use the current index/row/column to select a delegate based on that. Similarly I'm not able to add a column to the table which isn't part of the model.

Does anybody have a working example of a TableView showing all columns of a C++ model and an additional one that isn't in the model? Using different delegates for different columns?

All have would be more than welcome.

[fcarney]

https://doc.qt.io/qt-5/qml-qt-labs-qmlmodels-tablemodel.html#using-delegatechooser-with-tablemodel