CODEWITHSUNDEEP
listviewqmlexpandlistitemblackberry-cascades
brigadir
brigadir

Reputation: 6942

BB10 Cascades: expand/collapse items in ListView

I'm looking for code sample to collapse/expand ListItem in QML.

Currently I have an idea to do it through toggling visible flag for each child of triggered item. But I can't imagine how to iterate the children. Here is piece of code:

        ListView {
            dataModel: XmlDataModel {...}
            onTriggered: {
                var dataType = dataModel.itemType(indexPath)
                if (dataType == "header")
                {
                    var childrenCount = dataModel.childCount(indexPath);
                    for (int i = 0; i < childrenCount; i++)
                    {
                        // what to write here to get each child ListItem?
                    }
                }
            }
        }

Thanks in advance.

PS: There is a sample for my task where we inherit from bb::cascades::DataModel and override childCount. But I would like to not deal with C++ classes.

Upvotes: 2

Views: 689

Answers (1)

Konrad Lindenbach
Konrad Lindenbach

Reputation: 4961

Perhaps you could consider setting a visible property in the dataModel and binding the visibility of the children to it.

ListView {
    dataModel: XmlDataModel {...}
...
    listItemComponents: [
        ListItemComponent {
            visible: ListItemData.visible
...
        }
    ]
}

Then to loop through the children and make them all invisible you could just loop through the dataModel.

Upvotes: 1

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